The Goldman Sachs Group, Inc. (GS) 10-K 26 Feb 18 2017 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2017	Feb. 09, 2018	Jun. 30, 2017
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Trading Symbol	GS
Entity Registrant Name	GOLDMAN SACHS GROUP INC
Entity Central Index Key	886,982
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		379,887,039
Entity Public Float			$ 84.9

Consolidated Statements of Earn

Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues
Investment banking	$ 7,371	$ 6,273	$ 7,027
Investment management	5,803	5,407	5,868
Commissions and fees	3,051	3,208	3,320
Market making	7,660	9,933	9,523
Other principal transactions	5,256	3,200	5,018
Total non-interest revenues	29,141	28,021	30,756
Interest income	13,113	9,691	8,452
Interest expense	10,181	7,104	5,388
Net interest income	2,932	2,587	3,064
Net revenues, including net interest income	32,073	30,608	33,820
Operating expenses
Compensation and benefits	11,853	11,647	12,678
Brokerage, clearing, exchange and distribution fees	2,540	2,555	2,576
Market development	588	457	557
Communications and technology	897	809	806
Depreciation and amortization	1,152	998	991
Occupancy	733	788	772
Professional fees	965	882	963
Other expenses	2,213	2,168	5,699
Total non-compensation expenses	9,088	8,657	12,364
Total operating expenses	20,941	20,304	25,042
Pre-tax earnings	11,132	10,304	8,778
Provision for taxes	6,846	2,906	2,695
Net earnings	4,286	7,398	6,083
Preferred stock dividends	601	311	515
Net earnings applicable to common shareholders	$ 3,685	$ 7,087	$ 5,568
Earnings per common share
Basic	$ 9.12	$ 16.53	$ 12.35
Diluted	$ 9.01	$ 16.29	$ 12.14
Average common shares
Basic	401.6	427.4	448.9
Diluted	409.1	435.1	458.6

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statement of Comprehensive Income [Abstract]
Net earnings	$ 4,286	$ 7,398	$ 6,083
Other comprehensive income/(loss) adjustments, net of tax:
Currency translation	22	(60)	(114)
Debt valuation adjustment	(807)	(544)
Pension and postretirement liabilities	130	(199)	139
Available-for-sale securities	(9)
Other comprehensive income/(loss)	(664)	(803)	25
Comprehensive income	$ 3,622	$ 6,595	$ 6,108

Consolidated Statements of Fina

Consolidated Statements of Financial Condition - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Assets
Cash and cash equivalents	$ 110,051	$ 121,711
Collateralized agreements:
Securities purchased under agreements to resell (includes $120,420 and $116,077 at fair value)	120,822	116,925
Securities borrowed (includes $78,189 and $82,398 at fair value)	190,848	184,600
Receivables:
Brokers, dealers and clearing organizations	24,676	18,044
Customers and counterparties (includes $3,526 and $3,266 at fair value)	60,112	47,780
Loans receivable	65,933	49,672
Financial instruments owned (at fair value and includes $50,335 and $51,278 pledged as collateral)	315,988	295,952
Other assets	28,346	25,481
Total assets	916,776	860,165
Liabilities and shareholders' equity
Deposits (includes $22,902 and $13,782 at fair value)	138,604	124,098
Collateralized financings:
Securities sold under agreements to repurchase (at fair value)	84,718	71,816
Securities loaned (includes $5,357 and $2,647 at fair value)	14,793	7,524
Other secured financings (includes $24,345 and $21,073 at fair value)	24,788	21,523
Payables:
Brokers, dealers and clearing organizations	6,672	4,386
Customers and counterparties	171,497	184,069
Financial instruments sold, but not yet purchased (at fair value)	111,930	117,143
Unsecured short-term borrowings (includes $16,904 and $14,792 at fair value)	46,922	39,265
Unsecured long-term borrowings (includes $38,638 and $29,410 at fair value)	217,687	189,086
Other liabilities and accrued expenses (includes $268 and $621 at fair value)	16,922	14,362
Total liabilities	834,533	773,272
Commitments, contingencies and guarantees
Shareholders' equity
Preferred stock; aggregate liquidation preference of $11,853 and $11,203	11,853	11,203
Common stock; 884,592,863 and 873,608,100 shares issued, and 374,808,805 and 392,632,230 shares outstanding	9	9
Share-based awards	2,777	3,914
Nonvoting common stock; no shares issued and outstanding	0	0
Additional paid-in capital	53,357	52,638
Retained earnings	91,519	89,039
Accumulated other comprehensive loss	(1,880)	(1,216)
Stock held in treasury, at cost; 509,784,060 and 480,975,872 shares	(75,392)	(68,694)
Total shareholders' equity	82,243	86,893
Total liabilities and shareholders' equity	$ 916,776	$ 860,165

Consolidated Statements of Fin5

Consolidated Statements of Financial Condition (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Securities purchased under agreements to resell and federal funds sold at fair value	$ 120,420	$ 116,077
Securities borrowed at fair value	78,189	82,398
Receivables from customers and counterparties at fair value	3,526	3,266
Financial instruments owned, at fair value pledged as collateral	50,335	51,278
Deposits at fair value	22,902	13,782
Securities loaned at fair value	5,357	2,647
Other secured financings at fair value	24,345	21,073
Unsecured short-term borrowings, including the current portion of unsecured long-term borrowings, at fair value	16,904	14,792
Unsecured long-term borrowings at fair value	38,638	29,410
Other liabilities and accrued expenses at fair value	268	621
Preferred stock, liquidation preference	$ 11,853	$ 11,203
Common stock, shares issued	884,592,863	873,608,100
Common stock, shares outstanding	374,808,805	392,632,230
Treasury stock, shares	509,784,060	480,975,872

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Millions	Total	Preferred Stock [Member]	Common Stock [Member]	Share-Based Awards [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Stock Held in Treasury, at Cost [Member]
Beginning balance at Dec. 31, 2014		$ 9,200	$ 9	$ 3,766	$ 50,049	$ 78,984	$ (743)	$ (58,468)
Issuance and amortization of share-based awards				2,308
Net earnings	$ 6,083					6,083
Repurchased	(4,195)							(4,195)
Issued		2,000
Other comprehensive loss	25						25
Delivery of common stock underlying share-based awards				(1,742)	2,092
Dividends and dividend equivalents declared on common stock and share-based awards						(1,166)
Reissued								32
Cancellation of share-based awards in satisfaction of withholding tax requirements					(1,198)
Forfeiture of share-based awards				(72)
Dividends declared on preferred stock	(515)					(515)
Other								(9)
Preferred stock issuance costs, net of reversals upon redemption					(7)
Exercise of share-based awards				(109)
Excess net tax benefit related to share-based awards					406
Cash settlement of share-based awards					(2)
Ending balance at Dec. 31, 2015	86,728	11,200	9	4,151	51,340	83,386	(718)	(62,640)
Ending balance (Accounting Standards Update 2016-01 [Member]) at Dec. 31, 2015						83,081	(413)
Cumulative effect of the change in accounting principle related to debt valuation adjustment, net of tax | Accounting Standards Update 2016-01 [Member]						(305)	305
Issuance and amortization of share-based awards				2,143
Net earnings	7,398					7,398
Repurchased	(6,069)							(6,069)
Issued		1,325
Other comprehensive loss	(803)						(803)
Delivery of common stock underlying share-based awards				(2,068)	2,282
Dividends and dividend equivalents declared on common stock and share-based awards						(1,129)
Reissued								22
Redeemed		(1,322)
Cancellation of share-based awards in satisfaction of withholding tax requirements					(1,121)
Forfeiture of share-based awards				(102)
Dividends declared on preferred stock	(577)					(577)
Other								(7)
Preferred stock issuance costs, net of reversals upon redemption					(10)
Exercise of share-based awards				(210)
Preferred stock redemption discount/(premium)	266					266
Excess net tax benefit related to share-based awards					147
Ending balance at Dec. 31, 2016	86,893	11,203	9	3,914	52,638	89,039	(1,216)	(68,694)
Ending balance (Accounting Standards Update 2016-09 [Member]) at Dec. 31, 2016				3,949		89,015
Cumulative effect of the change in accounting principle related to forfeiture of share-based awards | Accounting Standards Update 2016-09 [Member]				35
Cumulative effect of the change in accounting principle related to forfeiture of share-based awards, net of tax | Accounting Standards Update 2016-09 [Member]						(24)
Issuance and amortization of share-based awards				1,810
Net earnings	4,286					4,286
Repurchased	(6,721)							(6,721)
Issued		1,500
Other comprehensive loss	(664)						(664)
Delivery of common stock underlying share-based awards				(2,704)	2,934
Dividends and dividend equivalents declared on common stock and share-based awards						(1,181)
Reissued								34
Redeemed		(850)
Cancellation of share-based awards in satisfaction of withholding tax requirements					(2,220)
Forfeiture of share-based awards				(89)
Dividends declared on preferred stock	(587)					(587)
Other								(11)
Preferred stock issuance costs, net of reversals upon redemption					8
Exercise of share-based awards				(189)
Preferred stock redemption discount/(premium)						(14)
Cash settlement of share-based awards					(3)
Ending balance at Dec. 31, 2017	$ 82,243	$ 11,853	$ 9	$ 2,777	$ 53,357	$ 91,519	$ (1,880)	$ (75,392)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities
Net earnings	$ 4,286	$ 7,398	$ 6,083
Adjustments to reconcile net earnings to net cash provided by/(used for) operating activities:
Depreciation and amortization	1,152	998	991
Deferred income taxes	5,458	551	425
Share-based compensation	1,769	2,111	2,272
Loss/(gain) related to extinguishment of subordinated borrowings	(114)	3	(34)
Changes in operating assets and liabilities:
Receivables and payables (excluding loans receivable), net	(30,082)	(15,813)	19,132
Collateralized transactions (excluding other secured financings), net	10,025	78	(14,825)
Financial instruments owned (excluding available-for-sale securities)	(11,327)	15,253	16,078
Financial instruments sold, but not yet purchased	(5,296)	1,960	(16,835)
Other, net	6,387	(5,639)	(3,806)
Net cash provided by/(used for) operating activities	(17,742)	6,900	9,481
Cash flows from investing activities
Purchase of property, leasehold improvements and equipment	(3,185)	(2,876)	(1,833)
Proceeds from sales of property, leasehold improvements and equipment	574	381	228
Net cash acquired in/(used for) business acquisitions	(2,383)	14,922	(1,808)
Purchase of investments	(9,853)
Proceeds from sales and paydowns of investments	2,887	1,512	1,019
Loans receivable, net	(17,156)	(4,669)	(16,180)
Net cash provided by/(used for) investing activities	(29,116)	9,270	(18,574)
Cash flows from financing activities
Unsecured short-term borrowings, net	(501)	(1,506)	(369)
Other secured financings (short-term), net	(405)	(808)	(867)
Proceeds from issuance of other secured financings (long-term)	7,401	4,186	10,349
Repayment of other secured financings (long-term), including the current portion	(4,726)	(7,375)	(6,502)
Purchase of APEX, senior guaranteed securities and trust preferred securities	(237)	(1,171)	(1)
Proceeds from issuance of unsecured long-term borrowings	58,347	50,763	44,595
Repayment of unsecured long-term borrowings, including the current portion	(30,756)	(36,557)	(29,520)
Derivative contracts with a financing element, net	1,684	2,115	(47)
Deposits, net	14,506	10,058	14,639
Preferred stock redemption	(850)
Common stock repurchased	(6,772)	(6,078)	(4,135)
Settlement of share-based awards in satisfaction of withholding tax requirements	(2,223)	(1,128)	(1,204)
Dividends and dividend equivalents paid on common stock, preferred stock and share-based awards	(1,769)	(1,706)	(1,681)
Proceeds from issuance of preferred stock, net of issuance costs	1,495	1,303	1,993
Proceeds from issuance of common stock, including exercise of share-based awards	7	6	259
Cash settlement of share-based awards	(3)		(2)
Net cash provided by financing activities	35,198	12,102	27,507
Net increase/(decrease) in cash and cash equivalents	(11,660)	28,272	18,414
Cash and cash equivalents, beginning balance	121,711	93,439	75,025
Cash and cash equivalents, ending balance	$ 110,051	$ 121,711	$ 93,439

Consolidated Statements of Cas8

Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
SUPPLEMENTAL DISCLOSURES:
Cash payments for interest, net of capitalized interest	$ 11,170	$ 7,140	$ 4,820
Cash payments for income taxes, net of refunds	1,420	1,060	2,650
Non-cash activities:
Trust Preferred Securities and common beneficial interests exchanged with the firm's junior subordinated debt	237		262
Firm's Junior subordinated debt exchanged for Trust Preferred Securities and common beneficial interests	248		296
Impact of adoption of accounting standard ASU No. 2015-02	$ 0	200
Sold assets previously classified as held for sale exchanged for financial instruments		1,810
Sold liabilities previously classified as held for sale exchanged for financial instruments		697
Financial instruments received in exchange for sold assets and liabilities previously classified as held for sale		1,110
APEX exchanged, fair value		1,040
Series E and Series F Preferred Stock cancelled, net carrying value		1,310
Senior guaranteed trust securities exchanged with the firm's junior subordinated debt		127
Firm's Junior subordinated debt exchanged with senior guaranteed trust securities		$ 124

Description of Business

Description of Business	12 Months Ended
	Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	Note 1. Description of Business The Goldman Sachs Group, Inc. (Group Inc. or parent company), a Delaware corporation, together with its consolidated subsidiaries (collectively, the firm), is a leading global investment banking, securities and investment management firm that provides a wide range of financial services to a substantial and diversified client base that includes corporations, financial institutions, governments and individuals. Founded in 1869, the firm is headquartered in New York and maintains offices in all major financial centers around the world. The firm reports its activities in the following four business segments: Investment Banking The firm provides a broad range of investment banking services to a diverse group of corporations, financial institutions, investment funds and governments. Services include strategic advisory assignments with respect to mergers and acquisitions, divestitures, corporate defense activities, restructurings, spin-offs and risk management, and debt and equity underwriting of public offerings and private placements, including local and cross-border transactions and acquisition financing, as well as derivative transactions directly related to these activities. Institutional Client Services The firm facilitates client transactions and makes markets in fixed income, equity, currency and commodity products, primarily with institutional clients such as corporations, financial institutions, investment funds and governments. The firm also makes markets in and clears client transactions on major stock, options and futures exchanges worldwide and provides financing, securities lending and other prime brokerage services to institutional clients. Investing & Lending The firm invests in and originates loans to provide financing to clients. These investments and loans are typically longer-term in nature. The firm makes investments, some of which are consolidated, including through its merchant banking business and its special situations group, in debt securities and loans, public and private equity securities, infrastructure and real estate entities. Some of these investments are made indirectly through funds that the firm manages. The firm also makes unsecured and secured loans to retail clients through its digital platforms, Marcus: by Goldman Sachs Goldman Sachs Private Bank Select Investment Management The firm provides investment management services and offers investment products (primarily through separately managed accounts and commingled vehicles, such as mutual funds and private investment funds) across all major asset classes to a diverse set of institutional and individual clients. The firm also offers wealth advisory services provided by the firm’s subsidiary, The Ayco Company, L.P., including portfolio management and financial planning and counseling, and brokerage and other transaction services to high-net-worth

Basis of Presentation

Basis of Presentation	12 Months Ended
	Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Note 2. Basis of Presentation These consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States (U.S. GAAP) and include the accounts of Group Inc. and all other entities in which the firm has a controlling financial interest. Intercompany transactions and balances have been eliminated. All references to 2017, 2016 and 2015 refer to the firm’s years ended, or the dates, as the context requires, December 31, 2017, December 31, 2016 and December 31, 2015, respectively. Any reference to a future year refers to a year ending on December 31 of that year. Certain reclassifications have been made to previously reported amounts to conform to the current presentation.

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Significant Accounting Policies	Note 3. Significant Accounting Policies The firm’s significant accounting policies include when and how to measure the fair value of assets and liabilities, accounting for goodwill and identifiable intangible assets, and when to consolidate an entity. See Notes 5 through 8 for policies on fair value measurements, Note 13 for policies on goodwill and identifiable intangible assets, and below and Note 12 for policies on consolidation accounting. All other significant accounting policies are either described below or included in the following footnotes: Financial Instruments Owned and Financial Instruments Sold, But Not Yet Purchased Note 4 Fair Value Measurements Note 5 Cash Instruments Note 6 Derivatives and Hedging Activities Note 7 Fair Value Option Note 8 Loans Receivable Note 9 Collateralized Agreements and Financings Note 10 Securitization Activities Note 11 Variable Interest Entities Note 12 Other Assets Note 13 Deposits Note 14 Short-Term Borrowings Note 15 Long-Term Borrowings Note 16 Other Liabilities and Accrued Expenses Note 17 Commitments, Contingencies and Guarantees Note 18 Shareholders’ Equity Note 19 Regulation and Capital Adequacy Note 20 Earnings Per Common Share Note 21 Transactions with Affiliated Funds Note 22 Interest Income and Interest Expense Note 23 Income Taxes Note 24 Business Segments Note 25 Credit Concentrations Note 26 Legal Proceedings Note 27 Employee Benefit Plans Note 28 Employee Incentive Plans Note 29 Parent Company Note 30 Consolidation The firm consolidates entities in which the firm has a controlling financial interest. The firm determines whether it has a controlling financial interest in an entity by first evaluating whether the entity is a voting interest entity or a variable interest entity (VIE). Voting Interest Entities. Voting interest entities are entities in which (i) the total equity investment at risk is sufficient to enable the entity to finance its activities independently and (ii) the equity holders have the power to direct the activities of the entity that most significantly impact its economic performance, the obligation to absorb the losses of the entity and the right to receive the residual returns of the entity. The usual condition for a controlling financial interest in a voting interest entity is ownership of a majority voting interest. If the firm has a controlling majority voting interest in a voting interest entity, the entity is consolidated. Variable Interest Entities. A VIE is an entity that lacks one or more of the characteristics of a voting interest entity. The firm has a controlling financial interest in a VIE when the firm has a variable interest or interests that provide it with (i) the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance and (ii) the obligation to absorb losses of the VIE or the right to receive benefits from the VIE that could potentially be significant to the VIE. See Note 12 for further information about VIEs. Equity-Method Investments. When the firm does not have a controlling financial interest in an entity but can exert significant influence over the entity’s operating and financial policies, the investment is accounted for either (i) under the equity method of accounting or (ii) at fair value by electing the fair value option available under U.S. GAAP. Significant influence generally exists when the firm owns 20% to 50% of the entity’s common stock or in-substance In general, the firm accounts for investments acquired after the fair value option became available, at fair value. In certain cases, the firm applies the equity method of accounting to new investments that are strategic in nature or closely related to the firm’s principal business activities, when the firm has a significant degree of involvement in the cash flows or operations of the investee or when cost-benefit considerations are less significant. See Note 13 for further information about equity-method investments. Investment Funds. The firm has formed numerous investment funds with third-party investors. These funds are typically organized as limited partnerships or limited liability companies for which the firm acts as general partner or manager. Generally, the firm does not hold a majority of the economic interests in these funds. These funds are usually voting interest entities and generally are not consolidated because third-party investors typically have rights to terminate the funds or to remove the firm as general partner or manager. Investments in these funds are generally measured at net asset value (NAV) and are included in financial instruments owned. See Notes 6, 18 and 22 for further information about investments in funds. Use of Estimates Preparation of these consolidated financial statements requires management to make certain estimates and assumptions, the most important of which relate to fair value measurements, accounting for goodwill and identifiable intangible assets, income tax expense related to the Tax Cuts and Jobs Act (Tax Legislation), provisions for losses that may arise from litigation and regulatory proceedings (including governmental investigations), the allowance for losses on loans receivable and lending commitments held for investment, and provisions for losses that may arise from tax audits. These estimates and assumptions are based on the best available information but actual results could be materially different. Revenue Recognition Financial Assets and Financial Liabilities at Fair Value. Financial instruments owned and financial instruments sold, but not yet purchased are recorded at fair value either under the fair value option or in accordance with other U.S. GAAP. In addition, the firm has elected to account for certain of its other financial assets and financial liabilities at fair value by electing the fair value option. The fair value of a financial instrument is the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Financial assets are marked to bid prices and financial liabilities are marked to offer prices. Fair value measurements do not include transaction costs. Fair value gains or losses are generally included in market making for positions in Institutional Client Services and other principal transactions for positions in Investing & Lending. See Notes 5 through 8 for further information about fair value measurements. Investment Banking. Fees from financial advisory assignments and underwriting revenues are recognized in earnings when the services related to the underlying transaction are completed under the terms of the assignment. Expenses associated with such transactions are deferred until the related revenue is recognized or the assignment is otherwise concluded. Expenses associated with financial advisory assignments are recorded as non-compensation No. 2014-09, Investment Management. The firm earns management fees and incentive fees for investment management services. Management fees for mutual funds are calculated as a percentage of daily net asset value and are received monthly. Management fees for hedge funds and separately managed accounts are calculated as a percentage of month-end 12-month 12-month The firm makes payments to brokers and advisors related to the placement of the firm’s investment funds. These payments are calculated based on either a percentage of the management fee or the investment fund’s net asset value. Where the firm is principal to the arrangement, such costs are recorded on a gross basis and included in brokerage, clearing, exchange and distribution fees, and where the firm is agent to the arrangement, such costs are recorded on a net basis in investment management revenues. As a result of adopting ASU No. 2014-09, Commissions and Fees. The firm earns commissions and fees from executing and clearing client transactions on stock, options and futures markets, as well as over-the-counter Transfers of Financial Assets Transfers of financial assets are accounted for as sales when the firm has relinquished control over the assets transferred. For transfers of financial assets accounted for as sales, any gains or losses are recognized in net revenues. Assets or liabilities that arise from the firm’s continuing involvement with transferred financial assets are initially recognized at fair value. For transfers of financial assets that are not accounted for as sales, the assets are generally included in financial instruments owned and the transfer is accounted for as a collateralized financing, with the related interest expense recognized over the life of the transaction. See Note 10 for further information about transfers of financial assets accounted for as collateralized financings and Note 11 for further information about transfers of financial assets accounted for as sales. Cash and Cash Equivalents The firm defines cash equivalents as highly liquid overnight deposits held in the ordinary course of business. As of December 2017 and December 2016, cash and cash equivalents included $10.79 billion and $11.15 billion, respectively, of cash and due from banks, and $99.26 billion and $110.56 billion, respectively, of interest-bearing deposits with banks. The firm segregates cash for regulatory and other purposes related to client activity. As of December 2017 and December 2016, $18.44 billion and $14.65 billion, respectively, of cash and cash equivalents were segregated for regulatory and other purposes. See “Recent Accounting Developments” for further information. In addition, the firm segregates securities for regulatory and other purposes related to client activity. See Note 10 for further information about segregated securities. Receivables from and Payables to Brokers, Dealers and Clearing Organizations Receivables from and payables to brokers, dealers and clearing organizations are accounted for at cost plus accrued interest, which generally approximates fair value. While these receivables and payables are carried at amounts that approximate fair value, they are not accounted for at fair value under the fair value option or at fair value in accordance with other U.S. GAAP and therefore are not included in the firm’s fair value hierarchy in Notes 6 through 8. Had these receivables and payables been included in the firm’s fair value hierarchy, substantially all would have been classified in level 2 as of both December 2017 and December 2016. Receivables from Customers and Counterparties Receivables from customers and counterparties generally relate to collateralized transactions. Such receivables primarily consist of customer margin loans, certain transfers of assets accounted for as secured loans rather than purchases at fair value and collateral posted in connection with certain derivative transactions. Substantially all of these receivables are accounted for at amortized cost net of estimated uncollectible amounts. Certain of the firm’s receivables from customers and counterparties are accounted for at fair value under the fair value option, with changes in fair value generally included in market making revenues. See Note 8 for further information about receivables from customers and counterparties accounted for at fair value under the fair value option. In addition, as of December 2017 and December 2016, the firm’s receivables from customers and counterparties included $4.63 billion and $2.60 billion, respectively, of loans held for sale, accounted for at the lower of cost or fair value. See Note 5 for an overview of the firm’s fair value measurement policies. As of both December 2017 and December 2016, the carrying value of receivables not accounted for at fair value generally approximated fair value. While these receivables are carried at amounts that approximate fair value, they are not accounted for at fair value under the fair value option or at fair value in accordance with other U.S. GAAP and therefore are not included in the firm’s fair value hierarchy in Notes 6 through 8. Had these receivables been included in the firm’s fair value hierarchy, substantially all would have been classified in level 2 as of both December 2017 and December 2016. Interest on receivables from customers and counterparties is recognized over the life of the transaction and included in interest income. Payables to Customers and Counterparties Payables to customers and counterparties primarily consist of customer credit balances related to the firm’s prime brokerage activities. Payables to customers and counterparties are accounted for at cost plus accrued interest, which generally approximates fair value. While these payables are carried at amounts that approximate fair value, they are not accounted for at fair value under the fair value option or at fair value in accordance with other U.S. GAAP and therefore are not included in the firm’s fair value hierarchy in Notes 6 through 8. Had these payables been included in the firm’s fair value hierarchy, substantially all would have been classified in level 2 as of both December 2017 and December 2016. Interest on payables to customers and counterparties is recognized over the life of the transaction and included in interest expense. Offsetting Assets and Liabilities To reduce credit exposures on derivatives and securities financing transactions, the firm may enter into master netting agreements or similar arrangements (collectively, netting agreements) with counterparties that permit it to offset receivables and payables with such counterparties. A netting agreement is a contract with a counterparty that permits net settlement of multiple transactions with that counterparty, including upon the exercise of termination rights by a non-defaulting non-defaulting Derivatives are reported on a net-by-counterparty net-by-counterparty In the consolidated statements of financial condition, derivatives are reported net of cash collateral received and posted under enforceable credit support agreements, when transacted under an enforceable netting agreement. In the consolidated statements of financial condition, resale and repurchase agreements, and securities borrowed and loaned, are not reported net of the related cash and securities received or posted as collateral. See Note 10 for further information about collateral received and pledged, including rights to deliver or repledge collateral. See Notes 7 and 10 for further information about offsetting. Foreign Currency Translation Assets and liabilities denominated in non-U.S. non-U.S. Recent Accounting Developments Revenue from Contracts with Customers (ASC 606). In May 2014, the FASB issued ASU No. 2014-09. The firm adopted this ASU in January 2018 under a modified retrospective approach. As a result of adopting this ASU, the firm will, among other things, delay recognition of non-refundable The firm will also prospectively change the presentation of certain costs from a net presentation within net revenues to a gross basis, and vice versa. Beginning in 2018, certain underwriting expenses, which are currently netted against Investment Banking revenues and certain distribution costs, which are currently netted against Investment Management revenues, will be presented gross as operating expenses. Soft dollar commissions, which are currently reported gross as operating expenses, will be presented net within commissions and fees. The impact of this ASU will depend on the nature of the firm’s activities after adoption, although these changes in presentation are not expected to have a material impact on the firm’s results of operations. Measuring the Financial Assets and the Financial Liabilities of a Consolidated Collateralized Financing Entity (ASC 810). In August 2014, the FASB issued ASU No. 2014-13, The firm adopted the ASU in January 2016. Adoption of the ASU did not materially affect the firm’s financial condition, results of operations or cash flows. Amendments to the Consolidation Analysis (ASC 810). In February 2015, the FASB issued ASU No. 2015-02, No. 2009-17, The firm adopted the ASU in January 2016, using a modified retrospective approach. The impact of adoption was a net reduction to both total assets and total liabilities of approximately $200 million, substantially all included in financial instruments owned and in other liabilities and accrued expenses, respectively. Adoption of this ASU did not have an impact on the firm’s results of operations. See Note 12 for further information about the adoption. Simplifying the Accounting for Measurement-Period Adjustments (ASC 805). In September 2015, the FASB issued ASU No. 2015-16, The firm adopted the ASU in January 2016. Adoption of the ASU did not materially affect the firm’s financial condition, results of operations or cash flows. Recognition and Measurement of Financial Assets and Financial Liabilities (ASC 825). In January 2016, the FASB issued ASU No. 2016-01, The ASU was effective for the firm in January 2018. Early adoption was permitted under a modified retrospective approach for the requirements related to DVA. In January 2016, the firm early adopted this ASU for the requirements related to DVA and reclassified the cumulative DVA, a gain of $305 million (net of tax), from retained earnings to accumulated other comprehensive loss. The adoption of the remaining provisions of the ASU in January 2018 did not have a material impact on the firm’s financial condition, results of operations or cash flows. Leases (ASC 842). In February 2016, the FASB issued ASU No. 2016-02, right-of-use right-of-use The ASU is effective for the firm in January 2019 under a modified retrospective approach. Early adoption is permitted. The firm’s implementation efforts include reviewing the terms of existing leases and service contracts, which may include embedded leases. Based on the implementation efforts to date, the firm expects a gross up on its consolidated statements of financial condition upon recognition of the right-of-use Improvements to Employee Share-Based Payment Accounting (ASC 718). In March 2016, the FASB issued ASU No. 2016-09, paid-in The firm adopted the ASU in January 2017 and the impact of the restricted stock unit (RSU) deliveries and option exercises during 2017 was a reduction to the provision for taxes of $719 million, which was recognized in the consolidated statements of earnings. The impact will vary in future periods depending upon, among other things, the number of RSUs delivered and their change in value since grant. Prior to the adoption of this ASU, this amount would have been recorded directly to additional paid-in In addition, the ASU modifies the classification of certain share-based payment activities within the statements of cash flows. As a result, the firm reclassified, on a retrospective basis, a cash outflow of $1.13 billion and $1.20 billion related to the settlement of share-based awards in satisfaction of withholding tax requirements from operating activities to financing activities and a cash inflow of $202 million and $407 million of excess tax benefits related to share-based awards from financing activities to operating activities for 2016 and 2015, respectively. Measurement of Credit Losses on Financial Instruments (ASC 326). In June 2016, the FASB issued ASU No. 2016-13, Under CECL, the allowance for losses for financial assets that are measured at amortized cost reflects management’s estimate of credit losses over the remaining expected life of the financial assets. Expected credit losses for newly recognized financial assets, as well as changes to expected credit losses during the period, would be recognized in earnings. For certain purchased financial assets with deterioration in credit quality since origination, an initial allowance would be recorded for expected credit losses and recognized as an increase to the purchase price rather than as an expense. Expected credit losses, including losses on off-balance-sheet The ASU is effective for the firm in January 2020 under a modified retrospective approach. Early adoption is permitted in January 2019. Adoption of the ASU will result in earlier recognition of credit losses and an increase in the recorded allowance for certain purchased loans with deterioration in credit quality since origination with a corresponding increase to their gross carrying value. The impact of adoption of this ASU on the firm’s financial condition, results of operations and cash flows will depend on, among other things, the economic environment and the type of financial assets held by the firm on the date of adoption. Classification of Certain Cash Receipts and Cash Payments (ASC 230). In August 2016, the FASB issued ASU No. 2016-15, The firm adopted this ASU in January 2018 under a retrospective approach. The impact of this ASU will depend on the nature of the firm’s activities after adoption, although the firm does not expect the change in classification to have a material impact on the consolidated statements of cash flows. Restricted Cash (ASC 230). In November 2016, the FASB issued ASU No. 2016-18, The firm early adopted the ASU in December 2016 and reclassified cash segregated for regulatory and other purposes into cash and cash equivalents disclosed in the consolidated statements of cash flows. The impact of adoption was a decrease of $3.69 billion and an increase of $909 million for 2016 and 2015, respectively, to net cash provided by operating activities. In addition, in December 2016, to be consistent with the presentation of segregated cash in the consolidated statements of cash flows under the ASU, the firm reclassified amounts previously included in cash and securities segregated for regulatory and other purposes into cash and cash equivalents, securities purchased under agreements to resell, securities borrowed and financial instruments owned in the consolidated statements of financial condition. Previously reported amounts in the consolidated statements of cash flows and notes to the consolidated financial statements have been conformed to the current presentation. Clarifying the Definition of a Business (ASC 805). In January 2017, the FASB issued ASU No. 2017-01, The firm adopted this ASU in January 2018 under a prospective approach. The impact of this ASU will depend on the nature of the firm’s activities after adoption, although the firm expects that fewer transactions will be treated as acquisitions (or disposals) of businesses. Simplifying the Test for Goodwill Impairment (ASC 350). In January 2017, the FASB issued ASU No. 2017-04, The ASU is effective for the firm in 2020. The firm early adopted this ASU in the fourth quarter of 2017. Adoption of the ASU did not have a material impact on the results of the firm’s goodwill impairment test. Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets (ASC 610-20). In February 2017, the FASB issued ASU No. 2017-05, 610-20) — The firm adopted this ASU in January 2018 under a modified retrospective approach. Adoption of the ASU did not have an impact on the firm’s financial condition, results of operations or cash flows. Targeted Improvements to Accounting for Hedging Activities (ASC 815). In August 2017, the FASB issued ASU No. 2017-12, The firm early adopted this ASU in January 2018. Adoption of this ASU did not have a material impact on the firm’s financial condition, results of operations or cash flows. Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (ASC 220). In February 2018, the FASB issued ASU No. 2018-02, “Income Statement — Reporting Comprehensive Income (Topic 220) — Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” This ASU permits a reporting entity to reclassify the income tax effects of Tax Legislation on items within accumulated other comprehensive income to retained earnings. The ASU is effective for the firm in January 2019 under a retrospective or a modified retrospective approach. Early adoption is permitted. Since this ASU only permits reclassification within shareholders’ equity, adoption of this ASU will not have a material impact on the firm’s financial condition.

Financial Instruments Owned and

Financial Instruments Owned and Financial Instruments Sold, But Not Yet Purchased	12 Months Ended
	Dec. 31, 2017
Text Block [Abstract]
Financial Instruments Owned and Financial Instruments Sold, But Not Yet Purchased	Note 4. Financial Instruments Owned and Financial Instruments Sold, But Not Yet Purchased Financial instruments owned and financial instruments sold, but not yet purchased are accounted for at fair value either under the fair value option or in accordance with other U.S. GAAP. See Note 8 for information about other financial assets and financial liabilities at fair value. The table below presents the firm’s financial instruments owned and financial instruments sold, but not yet purchased. $ in millions Financial Financial As of December 2017 Money market instruments $ 1,608 $ – Government and agency obligations: U.S. 76,418 17,911 Non-U.S. 33,956 23,311 Loans and securities backed by: Commercial real estate 3,436 1 Residential real estate 11,993 – Corporate loans and debt securities 33,683 7,153 State and municipal obligations 1,471 – Other debt obligations 2,164 1 Equity securities 96,132 23,882 Commodities 3,194 40 Investments in funds at NAV 4,596 – Subtotal 268,651 72,299 Derivatives 47,337 39,631 Total $315,988 $111,930 As of December 2016 Money market instruments $ 1,319 $ – Government and agency obligations: U.S. 57,657 16,627 Non-U.S. 29,381 20,502 Loans and securities backed by: Commercial real estate 3,842 – Residential real estate 12,195 3 Corporate loans and debt securities 28,659 6,570 State and municipal obligations 1,059 – Other debt obligations 1,358 1 Equity securities 94,692 25,941 Commodities 5,653 – Investments in funds at NAV 6,465 – Subtotal 242,280 69,644 Derivatives 53,672 47,499 Total $295,952 $117,143 In the table above: • Money market instruments includes commercial paper, certificates of deposit and time deposits, substantially all of which have a maturity of less than one year. • Equity securities includes public and private equities, exchange-traded funds and convertible debentures. Such amounts include investments accounted for at fair value under the fair value option where the firm would otherwise apply the equity method of accounting of $8.49 billion and $7.92 billion as of December 2017 and December 2016, respectively. Gains and Losses from Market Making and Other Principal Transactions The table below presents market making revenues by major product type, as well as other principal transactions revenues. Year Ended December $ in millions 2017 2016 2015 Interest rates $ 6,406 $ (1,979 ) $ (1,360 ) Credit 701 1,854 920 Currencies (3,249 ) 6,158 3,345 Equities 3,162 2,873 5,515 Commodities 640 1,027 1,103 Market making 7,660 9,933 9,523 Other principal transactions 5,256 3,200 5,018 Total $12,916 $13,133 $14,541 In the table above: • Gains/(losses) include both realized and unrealized gains and losses, and are primarily related to the firm’s financial instruments owned and financial instruments sold, but not yet purchased, including both derivative and non-derivative • Gains/(losses) exclude related interest income and interest expense. See Note 23 for further information about interest income and interest expense. • Gains/(losses) on other principal transactions are included in the firm’s Investing & Lending segment. See Note 25 for net revenues, including net interest income, by product type for Investing & Lending, as well as the amount of net interest income included in Investing & Lending. • Gains/(losses) are not representative of the manner in which the firm manages its business activities because many of the firm’s market-making and client facilitation strategies utilize financial instruments across various product types. Accordingly, gains or losses in one product type frequently offset gains or losses in other product types. For example, most of the firm’s longer-term derivatives across product types are sensitive to changes in interest rates and may be economically hedged with interest rate swaps. Similarly, a significant portion of the firm’s cash instruments and derivatives across product types has exposure to foreign currencies and may be economically hedged with foreign currency contracts.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 5. Fair Value Measurements The fair value of a financial instrument is the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Financial assets are marked to bid prices and financial liabilities are marked to offer prices. Fair value measurements do not include transaction costs. The firm measures certain financial assets and financial liabilities as a portfolio (i.e., based on its net exposure to market and/or credit risks). The best evidence of fair value is a quoted price in an active market. If quoted prices in active markets are not available, fair value is determined by reference to prices for similar instruments, quoted prices or recent transactions in less active markets, or internally developed models that primarily use market-based or independently sourced inputs including, but not limited to, interest rates, volatilities, equity or debt prices, foreign exchange rates, commodity prices, credit spreads and funding spreads (i.e., the spread or difference between the interest rate at which a borrower could finance a given financial instrument relative to a benchmark interest rate). U.S. GAAP has a three-level hierarchy for disclosure of fair value measurements. This hierarchy prioritizes inputs to the valuation techniques used to measure fair value, giving the highest priority to level 1 inputs and the lowest priority to level 3 inputs. A financial instrument’s level in this hierarchy is based on the lowest level of input that is significant to its fair value measurement. In evaluating the significance of a valuation input, the firm considers, among other factors, a portfolio’s net risk exposure to that input. The fair value hierarchy is as follows: Level 1. Inputs are unadjusted quoted prices in active markets to which the firm had access at the measurement date for identical, unrestricted assets or liabilities. Level 2. Inputs to valuation techniques are observable, either directly or indirectly. Level 3. One or more inputs to valuation techniques are significant and unobservable. The fair values for substantially all of the firm’s financial assets and financial liabilities are based on observable prices and inputs and are classified in levels 1 and 2 of the fair value hierarchy. Certain level 2 and level 3 financial assets and financial liabilities may require appropriate valuation adjustments that a market participant would require to arrive at fair value for factors such as counterparty and the firm’s credit quality, funding risk, transfer restrictions, liquidity and bid/offer spreads. Valuation adjustments are generally based on market evidence. See Notes 6 through 8 for further information about fair value measurements of cash instruments, derivatives and other financial assets and financial liabilities at fair value. The table below presents financial assets and financial liabilities accounted for at fair value under the fair value option or in accordance with other U.S. GAAP. As of December $ in millions 2017 2016 Total level 1 financial assets $155,086 $135,401 Total level 2 financial assets 395,606 419,585 Total level 3 financial assets 19,201 23,280 Investments in funds at NAV 4,596 6,465 Counterparty and cash collateral netting (56,366 ) (87,038 ) Total financial assets at fair value $518,123 $497,693 Total assets $916,776 $860,165 Total level 3 financial assets divided by: Total assets 2.1% 2.7% Total financial assets at fair value 3.7% 4.7% Total level 1 financial liabilities $ 63,589 $ 62,504 Total level 2 financial liabilities 261,719 232,027 Total level 3 financial liabilities 19,620 21,448 Counterparty and cash collateral netting (39,866 ) (44,695 ) Total financial liabilities at fair value $305,062 $271,284 Total level 3 financial liabilities divided by total financial liabilities at fair value 6.4% 7.9% In the table above: • Counterparty netting among positions classified in the same level is included in that level. • Counterparty and cash collateral netting represents the impact on derivatives of netting across levels of the fair value hierarchy. The table below presents a summary of level 3 financial assets. As of December $ in millions 2017 2016 Cash instruments $15,395 $18,035 Derivatives 3,802 5,190 Other financial assets 4 55 Total $19,201 $23,280 Level 3 financial assets as of December 2017 decreased compared with December 2016, primarily reflecting a decrease in level 3 cash instruments. See Notes 6 through 8 for further information about level 3 financial assets (including information about unrealized gains and losses related to level 3 financial assets and financial liabilities, and transfers in and out of level 3).

Cash Instruments

Cash Instruments	12 Months Ended
	Dec. 31, 2017
Text Block [Abstract]
Cash Instruments	Note 6. Cash Instruments Cash instruments include U.S. government and agency obligations, non-U.S. non-derivative Level 1 Cash Instruments Level 1 cash instruments include certain money market instruments, U.S. government obligations, most non-U.S. The firm defines active markets for equity instruments based on the average daily trading volume both in absolute terms and relative to the market capitalization for the instrument. The firm defines active markets for debt instruments based on both the average daily trading volume and the number of days with trading activity. Level 2 Cash Instruments Level 2 cash instruments include most money market instruments, most government agency obligations, certain non-U.S. Valuations of level 2 cash instruments can be verified to quoted prices, recent trading activity for identical or similar instruments, broker or dealer quotations or alternative pricing sources with reasonable levels of price transparency. Consideration is given to the nature of the quotations (e.g., indicative or firm) and the relationship of recent market activity to the prices provided from alternative pricing sources. Valuation adjustments are typically made to level 2 cash instruments (i) if the cash instrument is subject to transfer restrictions and/or (ii) for other premiums and liquidity discounts that a market participant would require to arrive at fair value. Valuation adjustments are generally based on market evidence. Level 3 Cash Instruments Level 3 cash instruments have one or more significant valuation inputs that are not observable. Absent evidence to the contrary, level 3 cash instruments are initially valued at transaction price, which is considered to be the best initial estimate of fair value. Subsequently, the firm uses other methodologies to determine fair value, which vary based on the type of instrument. Valuation inputs and assumptions are changed when corroborated by substantive observable evidence, including values realized on sales of financial assets. Valuation Techniques and Significant Inputs of Level 3 Cash Instruments Valuation techniques of level 3 cash instruments vary by instrument, but are generally based on discounted cash flow techniques. The valuation techniques and the nature of significant inputs used to determine the fair values of each type of level 3 cash instrument are described below: Loans and Securities Backed by Commercial Real Estate. Loans and securities backed by commercial real estate are directly or indirectly collateralized by a single commercial real estate property or a portfolio of properties, and may include tranches of varying levels of subordination. Significant inputs are generally determined based on relative value analyses and include: • Transaction prices in both the underlying collateral and instruments with the same or similar underlying collateral; • Market yields implied by transactions of similar or related assets and/or current levels and changes in market indices such as the CMBX (an index that tracks the performance of commercial mortgage bonds); • A measure of expected future cash flows in a default scenario (recovery rates) implied by the value of the underlying collateral, which is mainly driven by current performance of the underlying collateral, capitalization rates and multiples. Recovery rates are expressed as a percentage of notional or face value of the instrument and reflect the benefit of credit enhancements on certain instruments; and • Timing of expected future cash flows (duration) which, in certain cases, may incorporate the impact of other unobservable inputs (e.g., prepayment speeds). Loans and Securities Backed by Residential Real Estate. Loans and securities backed by residential real estate are directly or indirectly collateralized by portfolios of residential real estate and may include tranches of varying levels of subordination. Significant inputs are generally determined based on relative value analyses, which incorporate comparisons to instruments with similar collateral and risk profiles. Significant inputs include: • Transaction prices in both the underlying collateral and instruments with the same or similar underlying collateral; • Market yields implied by transactions of similar or related assets; • Cumulative loss expectations, driven by default rates, home price projections, residential property liquidation timelines, related costs and subsequent recoveries; and • Duration, driven by underlying loan prepayment speeds and residential property liquidation timelines. Corporate Loans and Debt Securities. Corporate loans and debt securities includes bank loans and bridge loans and corporate debt securities. Significant inputs are generally determined based on relative value analyses, which incorporate comparisons both to prices of credit default swaps that reference the same or similar underlying instrument or entity and to other debt instruments for the same issuer for which observable prices or broker quotations are available. Significant inputs include: • Market yields implied by transactions of similar or related assets and/or current levels and trends of market indices such as CDX and LCDX (indices that track the performance of corporate credit and loans, respectively); • Current performance and recovery assumptions and, where the firm uses credit default swaps to value the related cash instrument, the cost of borrowing the underlying reference obligation; and • Duration. Equity Securities. Equity securities includes private equity securities and convertible debentures. Recent third-party completed or pending transactions (e.g., merger proposals, tender offers, debt restructurings) are considered to be the best evidence for any change in fair value. When these are not available, the following valuation methodologies are used, as appropriate: • Industry multiples (primarily EBITDA multiples) and public comparables; • Transactions in similar instruments; • Discounted cash flow techniques; and • Third-party appraisals. The firm also considers changes in the outlook for the relevant industry and financial performance of the issuer as compared to projected performance. Significant inputs include: • Market and transaction multiples; • Discount rates and capitalization rates; and • For equity securities with debt-like features, market yields implied by transactions of similar or related assets, current performance and recovery assumptions, and duration. Other Cash Instruments. Other cash instruments consists of non-U.S. • Market yields implied by transactions of similar or related assets and/or current levels and trends of market indices; • Current performance and recovery assumptions and, where the firm uses credit default swaps to value the related cash instrument, the cost of borrowing the underlying reference obligation; and • Duration. Fair Value of Cash Instruments by Level The tables below present cash instrument assets and liabilities at fair value by level within the fair value hierarchy. As of December 2017 $ in millions Level 1 Level 2 Level 3 Total Assets Money market instruments $ 398 $ 1,209 $ 1 $ 1,608 Government and agency obligations: U.S. 50,796 25,622 – 76,418 Non-U.S. 27,070 6,882 4 33,956 Loans and securities backed by: Commercial real estate – 2,310 1,126 3,436 Residential real estate – 11,325 668 11,993 Corporate loans and debt securities 752 29,661 3,270 33,683 State and municipal obligations – 1,401 70 1,471 Other debt obligations – 1,812 352 2,164 Equity securities 76,044 10,184 9,904 96,132 Commodities – 3,194 – 3,194 Subtotal $155,060 $93,600 $15,395 $264,055 Investments in funds at NAV 4,596 Total cash instrument assets $268,651 Liabilities Government and agency obligations: U.S. $ (17,845 ) $ (66 ) $ – $ (17,911 ) Non-U.S. (21,820 ) (1,491 ) – (23,311 ) Loans and securities backed by commercial real estate – (1 ) – (1 ) Corporate loans and debt securities (2 ) (7,099 ) (52 ) (7,153 ) Other debt obligations – (1 ) – (1 ) Equity securities (23,866 ) – (16 ) (23,882 ) Commodities – (40 ) – (40 ) Total cash instrument liabilities $ (63,533 ) $ (8,698 ) $ (68 ) $ (72,299 ) As of December 2016 $ in millions Level 1 Level 2 Level 3 Total Assets Money market instruments $ 188 $ 1,131 $ – $ 1,319 Government and agency obligations: U.S. 35,254 22,403 – 57,657 Non-U.S. 22,433 6,933 15 29,381 Loans and securities backed by: Commercial real estate – 2,197 1,645 3,842 Residential real estate – 11,350 845 12,195 Corporate loans and debt 215 23,804 4,640 28,659 State and municipal obligations – 960 99 1,059 Other debt obligations – 830 528 1,358 Equity securities 77,276 7,153 10,263 94,692 Commodities – 5,653 – 5,653 Subtotal $135,366 $82,414 $18,035 $235,815 Investments in funds at NAV 6,465 Total cash instrument assets $242,280 Liabilities Government and agency obligations: U.S. $ (16,615 ) $ (12 ) $ – $ (16,627 ) Non-U.S. (19,137 ) (1,364 ) (1 ) (20,502 ) Loans and securities backed by residential real estate – (3 ) – (3 ) Corporate loans and debt (2 ) (6,524 ) (44 ) (6,570 ) Other debt obligations – (1 ) – (1 ) Equity securities (25,768 ) (156 ) (17 ) (25,941 ) Total cash instrument liabilities $ (61,522 ) $ (8,060 ) $ (62 ) $ (69,644 ) In the tables above: • Cash instrument assets and liabilities are included in financial instruments owned and financial instruments sold, but not yet purchased, respectively. • Cash instrument assets are shown as positive amounts and cash instrument liabilities are shown as negative amounts. • Money market instruments includes commercial paper, certificates of deposit and time deposits. • Equity securities includes public and private equities, exchange-traded funds and convertible debentures. • As of both December 2017 and December 2016, substantially all of the firm’s level 3 equity securities consisted of private equity securities. • Total cash instrument assets included collateralized debt obligations (CDOs) and collateralized loan obligations (CLOs) backed by real estate and corporate obligations of $918 million and $461 million in level 2, and $250 million and $624 million in level 3 as of December 2017 and December 2016, respectively. Significant Unobservable Inputs The table below presents the amount of level 3 assets, and ranges and weighted averages of significant unobservable inputs used to value the firm’s level 3 cash instruments. Level 3 Assets and Range of Significant Unobservable $ in millions 2017 2016 Loans and securities backed by commercial real estate Level 3 assets $1,126 $1,645 Yield 4.6% to 22.0% (13.4% ) 3.7% to 23.0% (13.0% ) Recovery rate 14.3% to 89.0% (43.8% ) 8.9% to 99.0% (60.6% ) Duration (years) 0.8 to 6.4 (2.1 ) 0.8 to 6.2 (2.1 ) Loans and securities backed by residential real estate Level 3 assets $668 $845 Yield 2.3% to 15.0% (8.3% ) 0.8% to 15.6% (8.7% ) Cumulative loss rate 12.5% to 43.0% (21.8% ) 8.9% to 47.1% (24.2% ) Duration (years) 0.7 to 14.0 (6.9 ) 1.1 to 16.1 (7.3 ) Corporate loans and debt securities Level 3 assets $3,270 $4,640 Yield 3.6% to 24.5% (12.3% ) 2.5% to 25.0% (10.3% ) Recovery rate 0.0% to 85.3% (62.8% ) 0.0% to 85.0% (56.5% ) Duration (years) 0.5 to 7.6 (3.2 ) 0.6 to 15.7 (2.9 ) Equity securities Level 3 assets $9,904 $10,263 Multiples 1.1x to 30.5x (8.9x ) 0.8x to 19.7x (6.8x ) Discount rate/yield 3.0% to 20.3% (14.0% ) 6.5% to 25.0% (16.0% ) Capitalization rate 4.3% to 12.0% (6.1% ) 4.2% to 12.5% (6.8% ) Other cash instruments Level 3 assets $427 $642 Yield 4.0% to 11.7% (8.4% ) 1.9% to 14.0% (8.8% ) Recovery rate N/A 0.0% to 93.0% (61.4% ) Duration (years) 3.5 to 11.4 (5.1 ) 0.9 to 12.0 (4.3 ) In the table above: • Ranges represent the significant unobservable inputs that were used in the valuation of each type of cash instrument. • Weighted averages are calculated by weighting each input by the relative fair value of the cash instruments. • The ranges and weighted averages of these inputs are not representative of the appropriate inputs to use when calculating the fair value of any one cash instrument. For example, the highest multiple for private equity securities is appropriate for valuing a specific private equity security but may not be appropriate for valuing any other private equity security. Accordingly, the ranges of inputs do not represent uncertainty in, or possible ranges of, fair value measurements of the firm’s level 3 cash instruments. • Increases in yield, discount rate, capitalization rate, duration or cumulative loss rate used in the valuation of the firm’s level 3 cash instruments would result in a lower fair value measurement, while increases in recovery rate or multiples would result in a higher fair value measurement. Due to the distinctive nature of each of the firm’s level 3 cash instruments, the interrelationship of inputs is not necessarily uniform within each product type. • Equity securities includes private equity securities and convertible debentures. • Loans and securities backed by commercial and residential real estate, corporate loans and debt securities and other cash instruments are valued using discounted cash flows, and equity securities are valued using market comparables and discounted cash flows. • The fair value of any one instrument may be determined using multiple valuation techniques. For example, market comparables and discounted cash flows may be used together to determine fair value. Therefore, the level 3 balance encompasses both of these techniques. • Recovery rate was not significant to the valuation of level 3 other cash instrument assets as of December 2017. Transfers Between Levels of the Fair Value Hierarchy Transfers between levels of the fair value hierarchy are reported at the beginning of the reporting period in which they occur. See “Level 3 Rollforward” below for information about transfers between level 2 and level 3. During 2017, transfers into level 2 from level 1 of cash instruments were $63 million, reflecting transfers of public equity securities due to decreased market activity in these instruments. Transfers into level 1 from level 2 of cash instruments during 2017 were $154 million, reflecting transfers of public equity securities due to increased market activity in these instruments. During 2016, transfers into level 2 from level 1 of cash instruments were $135 million, reflecting transfers of public equity securities due to decreased market activity in these instruments. Transfers into level 1 from level 2 of cash instruments during 2016 were $267 million, reflecting transfers of public equity securities due to increased market activity in these instruments. Level 3 Rollforward The table below presents a summary of the changes in fair value for level 3 cash instrument assets and liabilities. Year Ended December $ in millions 2017 2016 Total cash instrument assets Beginning balance $18,035 $18,131 Net realized gains/(losses) 419 574 Net unrealized gains/(losses) 1,144 397 Purchases 1,635 3,072 Sales (3,315 ) (2,326 ) Settlements (2,265 ) (3,503 ) Transfers into level 3 2,405 3,405 Transfers out of level 3 (2,663 ) (1,715 ) Ending balance $15,395 $18,035 Total cash instrument liabilities Beginning balance $ (62 ) $ (193 ) Net realized gains/(losses) (8 ) 20 Net unrealized gains/(losses) (28 ) 19 Purchases 97 91 Sales (20 ) (49 ) Settlements (32 ) (7 ) Transfers into level 3 (18 ) (12 ) Transfers out of level 3 3 69 Ending balance $ (68 ) $ (62 ) In the table above: • Changes in fair value are presented for all cash instrument assets and liabilities that are classified in level 3 as of the end of the period. • Net unrealized gains/(losses) relates to instruments that were still held at period-end. • Purchases includes originations and secondary purchases. • If a cash instrument asset or liability was transferred to level 3 during a reporting period, its entire gain or loss for the period is classified in level 3. For level 3 cash instrument assets, increases are shown as positive amounts, while decreases are shown as negative amounts. For level 3 cash instrument liabilities, increases are shown as negative amounts, while decreases are shown as positive amounts. • Level 3 cash instruments are frequently economically hedged with level 1 and level 2 cash instruments and/or level 1, level 2 or level 3 derivatives. Accordingly, gains or losses that are classified in level 3 can be partially offset by gains or losses attributable to level 1 or level 2 cash instruments and/or level 1, level 2 or level 3 derivatives. As a result, gains or losses included in the level 3 rollforward below do not necessarily represent the overall impact on the firm’s results of operations, liquidity or capital resources. The table below disaggregates, by product type, the information for cash instrument assets included in the summary table above. Year Ended December $ in millions 2017 2016 Loans and securities backed by commercial real estate Beginning balance $ 1,645 $ 1,924 Net realized gains/(losses) 35 60 Net unrealized gains/(losses) 71 (19 ) Purchases 176 331 Sales (319 ) (320 ) Settlements (392 ) (617 ) Transfers into level 3 141 510 Transfers out of level 3 (231 ) (224 ) Ending balance $ 1,126 $ 1,645 Loans and securities backed by residential real estate Beginning balance $ 845 $ 1,765 Net realized gains/(losses) 37 60 Net unrealized gains/(losses) 96 26 Purchases 98 298 Sales (246 ) (791 ) Settlements (104 ) (278 ) Transfers into level 3 21 73 Transfers out of level 3 (79 ) (308 ) Ending balance $ 668 $ 845 Corporate loans and debt securities Beginning balance $ 4,640 $ 5,242 Net realized gains/(losses) 145 261 Net unrealized gains/(losses) (13 ) 34 Purchases 666 1,078 Sales (1,003 ) (645 ) Settlements (1,062 ) (1,823 ) Transfers into level 3 1,130 1,023 Transfers out of level 3 (1,233 ) (530 ) Ending balance $ 3,270 $ 4,640 Equity securities Beginning balance $10,263 $ 8,549 Net realized gains/(losses) 185 158 Net unrealized gains/(losses) 982 371 Purchases 624 1,122 Sales (1,702 ) (412 ) Settlements (559 ) (634 ) Transfers into level 3 1,113 1,732 Transfers out of level 3 (1,002 ) (623 ) Ending balance $ 9,904 $10,263 Other cash instruments Beginning balance $ 642 $ 651 Net realized gains/(losses) 17 35 Net unrealized gains/(losses) 8 (15 ) Purchases 71 243 Sales (45 ) (158 ) Settlements (148 ) (151 ) Transfers into level 3 – 67 Transfers out of level 3 (118 ) (30 ) Ending balance $ 427 $ 642 Level 3 Rollforward Commentary Year Ended December 2017. The net realized and unrealized gains on level 3 cash instrument assets of $1.56 billion (reflecting $419 million of net realized gains and $1.14 billion of net unrealized gains) for 2017 included gains/(losses) of approximately $(99) million, $1.13 billion and $532 million reported in market making, other principal transactions and interest income, respectively. The net unrealized gains on level 3 cash instrument assets for 2017 primarily reflected gains on private equity securities, principally driven by strong corporate performance and company-specific events. Transfers into level 3 during 2017 primarily reflected transfers of certain corporate loans and debt securities and private equity securities from level 2, principally due to reduced price transparency as a result of a lack of market evidence, including fewer market transactions in these instruments. Transfers out of level 3 during 2017 primarily reflected transfers of certain corporate loans and debt securities and private equity securities to level 2, principally due to increased price transparency as a result of market evidence, including market transactions in these instruments, and transfers of certain corporate loans and debt securities to level 2, principally due to certain unobservable yield and duration inputs no longer being significant to the valuation of these instruments. Year Ended December 2016. The net realized and unrealized gains on level 3 cash instrument assets of $971 million (reflecting $574 million of net realized gains and $397 million of net unrealized gains) for 2016 included gains/(losses) of approximately $(311) million, $625 million and $657 million reported in market making, other principal transactions and interest income, respectively. The net unrealized gains on level 3 cash instrument assets for 2016 primarily reflected gains on private equity securities, principally driven by strong corporate performance and company-specific events. Transfers into level 3 during 2016 primarily reflected transfers of certain private equity securities, corporate loans and debt securities, and loans and securities backed by commercial real estate from level 2, principally due to reduced price transparency as a result of a lack of market evidence, including fewer market transactions in these instruments. Transfers out of level 3 during 2016 primarily reflected transfers of certain private equity securities, corporate loans and debt securities, and loans and securities backed by residential real estate to level 2, principally due to increased price transparency as a result of market evidence, including market transactions in these instruments. Available-for-Sale The table below presents details about cash instruments that are accounted for as available-for-sale. $ in millions Amortized Fair Weighted As of December 2017 Less than 5 years $3,834 $3,800 1.95% Greater than 5 years 5,207 5,222 2.41% Total U.S. government obligations 9,041 9,022 2.22% Less than 5 years 19 19 0.43% Greater than 5 years 233 235 4.62% Total other available-for-sale 252 254 4.30% Total available-for-sale $9,293 $9,276 2.27% As of December 2016 Less than 5 years $ 24 $ 24 0.43% Total U.S. government obligations 24 24 0.43% Less than 5 years 31 31 2.11% Greater than 5 years 34 34 3.85% Total other available-for-sale 65 65 3.03% Total available-for-sale $ 89 $ 89 2.32% In the table above: • U.S. government obligations were classified in level 1 of the fair value hierarchy as of both December 2017 and December 2016. • Other available-for-sale • The gross unrealized gains/(losses) included in accumulated other comprehensive loss related to available-for-sale Investments in Funds at Net Asset Value Per Share Cash instruments at fair value include investments in funds that are measured at NAV of the investment fund. The firm uses NAV to measure the fair value of its fund investments when (i) the fund investment does not have a readily determinable fair value and (ii) the NAV of the investment fund is calculated in a manner consistent with the measurement principles of investment company accounting, including measurement of the investments at fair value. Substantially all of the firm’s investments in funds at NAV consist of investments in firm-sponsored private equity, credit, real estate and hedge funds where the firm co-invests Private equity funds primarily invest in a broad range of industries worldwide, including leveraged buyouts, recapitalizations, growth investments and distressed investments. Credit funds generally invest in loans and other fixed income instruments and are focused on providing private high-yield capital for leveraged and management buyout transactions, recapitalizations, financings, refinancings, acquisitions and restructurings for private equity firms, private family companies and corporate issuers. Real estate funds invest globally, primarily in real estate companies, loan portfolios, debt recapitalizations and property. Private equity, credit and real estate funds are closed-end The firm also invests in hedge funds, primarily multi-disciplinary hedge funds that employ a fundamental bottom-up Many of the funds described above are “covered funds” as defined in the Volcker Rule of the U.S. Dodd-Frank Wall Street Reform and Consumer Protection Act (Dodd-Frank Act). The Board of Governors of the Federal Reserve System (Federal Reserve Board or FRB) extended the conformance period to July 2022 for the firm’s investments in, and relationships with, certain legacy “illiquid funds” (as defined in the Volcker Rule) that were in place prior to December 2013. This extension is applicable to substantially all of the firm’s remaining investments in, and relationships with, covered funds in the table below. The table below presents the fair value of the firm’s investments in funds at NAV and related unfunded commitments. $ in millions Fair Value of Unfunded As of December 2017 Private equity funds $3,478 $ 614 Credit funds 266 985 Hedge funds 223 – Real estate funds 629 201 Total $4,596 $1,800 As of December 2016 Private equity funds $4,628 $1,393 Credit funds 421 166 Hedge funds 410 – Real estate funds 1,006 272 Total $6,465 $1,831

Derivatives and Hedging Activit

Derivatives and Hedging Activities	12 Months Ended
	Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	Note 7. Derivatives and Hedging Activities Derivative Activities Derivatives are instruments that derive their value from underlying asset prices, indices, reference rates and other inputs, or a combination of these factors. Derivatives may be traded on an exchange (exchange-traded) or they may be privately negotiated contracts, which are usually referred to as OTC derivatives. Certain of the firm’s OTC derivatives are cleared and settled through central clearing counterparties (OTC-cleared), Market-Making. As a market maker, the firm enters into derivative transactions to provide liquidity to clients and to facilitate the transfer and hedging of their risks. In this role, the firm typically acts as principal and is required to commit capital to provide execution, and maintains inventory in response to, or in anticipation of, client demand. Risk Management. The firm also enters into derivatives to actively manage risk exposures that arise from its market-making and investing and lending activities in derivative and cash instruments. The firm’s holdings and exposures are hedged, in many cases, on either a portfolio or risk-specific basis, as opposed to an instrument-by-instrument non-U.S. The firm enters into various types of derivatives, including: • Futures and Forwards. • Swaps. • Options. Derivatives are reported on a net-by-counterparty The tables below present the gross fair value and the notional amounts of derivative contracts by major product type, the amounts of counterparty and cash collateral netting in the consolidated statements of financial condition, as well as cash and securities collateral posted and received under enforceable credit support agreements that do not meet the criteria for netting under U.S. GAAP. As of December 2017 As of December 2016 $ in millions Derivative Derivative Derivative Derivative Not accounted for as hedges Exchange-traded $ 554 $ 644 $ 443 $ 382 OTC-cleared 5,392 2,773 189,471 168,946 Bilateral OTC 274,986 249,750 309,037 289,491 Total interest rates 280,932 253,167 498,951 458,819 OTC-cleared 5,727 5,670 4,837 4,811 Bilateral OTC 16,966 15,600 21,530 18,770 Total credit 22,693 21,270 26,367 23,581 Exchange-traded 23 363 36 176 OTC-cleared 988 847 796 798 Bilateral OTC 94,481 95,127 111,032 106,318 Total currencies 95,492 96,337 111,864 107,292 Exchange-traded 4,135 3,854 3,219 3,187 OTC-cleared 197 197 189 197 Bilateral OTC 9,748 12,097 8,945 10,487 Total commodities 14,080 16,148 12,353 13,871 Exchange-traded 10,552 10,335 8,576 8,064 Bilateral OTC 40,735 45,253 39,516 45,826 Total equities 51,287 55,588 48,092 53,890 Subtotal 464,484 442,510 697,627 657,453 Accounted for as hedges OTC-cleared 21 – 4,347 156 Bilateral OTC 2,309 3 4,180 10 Total interest rates 2,330 3 8,527 166 OTC-cleared 15 30 30 40 Bilateral OTC 34 114 55 64 Total currencies 49 144 85 104 Subtotal 2,379 147 8,612 270 Total gross fair value $ 466,863 $ 442,657 $ 706,239 $ 657,723 Offset in consolidated statements of financial condition Exchange-traded $ (12,963 ) $ (12,963 ) $ (9,727 ) $ (9,727 ) OTC-cleared (9,267 ) (9,267 ) (171,864 ) (171,864 ) Bilateral OTC (341,824 ) (341,824 ) (385,647 ) (385,647 ) Counterparty netting (364,054 ) (364,054 ) (567,238 ) (567,238 ) OTC-cleared (2,423 ) (180 ) (27,560 ) (2,940 ) Bilateral OTC (53,049 ) (38,792 ) (57,769 ) (40,046 ) Cash collateral netting (55,472 ) (38,972 ) (85,329 ) (42,986 ) Total amounts offset $(419,526 ) $(403,026 ) $(652,567 ) $(610,224 ) Included in consolidated statements of financial condition Exchange-traded $ 2,301 $ 2,233 $ 2,547 $ 2,082 OTC-cleared 650 70 246 144 Bilateral OTC 44,386 37,328 50,879 45,273 Total $ 47,337 $ 39,631 $ 53,672 $ 47,499 Not offset in consolidated statements of financial condition Cash collateral $ (602 ) $ (2,375 ) $ (535 ) $ (2,085 ) Securities collateral (13,947 ) (8,722 ) (15,518 ) (10,224 ) Total $ 32,788 $ 28,534 $ 37,619 $ 35,190 Notional Amounts as of December $ in millions 2017 2016 Not accounted for as hedges Exchange-traded $10,212,510 $ 4,425,532 OTC-cleared 14,739,556 16,646,145 Bilateral OTC 12,862,328 11,131,442 Total interest rates 37,814,394 32,203,119 OTC-cleared 386,163 378,432 Bilateral OTC 868,226 1,045,913 Total credit 1,254,389 1,424,345 Exchange-traded 10,450 13,800 OTC-cleared 98,549 62,799 Bilateral OTC 7,331,516 5,576,748 Total currencies 7,440,515 5,653,347 Exchange-traded 239,749 227,707 OTC-cleared 3,925 3,506 Bilateral OTC 250,547 196,899 Total commodities 494,221 428,112 Exchange-traded 655,485 605,335 Bilateral OTC 1,127,812 959,112 Total equities 1,783,297 1,564,447 Subtotal 48,786,816 41,273,370 Accounted for as hedges OTC-cleared 52,785 55,328 Bilateral OTC 15,188 36,607 Total interest rates 67,973 91,935 OTC-cleared 2,210 1,703 Bilateral OTC 8,347 8,544 Total currencies 10,557 10,247 Subtotal 78,530 102,182 Total notional amounts $48,865,346 $41,375,552 In the tables above: • Gross fair values exclude the effects of both counterparty netting and collateral, and therefore are not representative of the firm’s exposure. • Where the firm has received or posted collateral under credit support agreements, but has not yet determined such agreements are enforceable, the related collateral has not been netted. • Notional amounts, which represent the sum of gross long and short derivative contracts, provide an indication of the volume of the firm’s derivative activity and do not represent anticipated losses. • Total gross fair value of derivatives included derivative assets and derivative liabilities of $11.24 billion and $13.00 billion, respectively, as of December 2017, and derivative assets and derivative liabilities of $19.92 billion and $20.79 billion, respectively, as of December 2016, which are not subject to an enforceable netting agreement or are subject to a netting agreement that the firm has not yet determined to be enforceable. During 2017, pursuant to a rule change at a clearing organization and to an election under the rules of another clearing organization, transactions with such clearing organizations are considered settled each day. The impact of reflecting transactions with these two clearing organizations as settled would have been a reduction in gross derivative assets and liabilities as of December 2016 of $189.08 billion and $166.04 billion, respectively, and a corresponding decrease in counterparty and cash collateral netting, with no impact to the consolidated statements of financial condition. Valuation Techniques for Derivatives The firm’s level 2 and level 3 derivatives are valued using derivative pricing models (e.g., discounted cash flow models, correlation models, and models that incorporate option pricing methodologies, such as Monte Carlo simulations). Price transparency of derivatives can generally be characterized by product type, as described below. • Interest Rate. 10-year 2-year • Credit. • Currency. • Commodity. • Equity. Liquidity is essential to observability of all product types. If transaction volumes decline, previously transparent prices and other inputs may become unobservable. Conversely, even highly structured products may at times have trading volumes large enough to provide observability of prices and other inputs. See Note 5 for an overview of the firm’s fair value measurement policies. Level 1 Derivatives Level 1 derivatives include short-term contracts for future delivery of securities when the underlying security is a level 1 instrument, and exchange-traded derivatives if they are actively traded and are valued at their quoted market price. Level 2 Derivatives Level 2 derivatives include OTC derivatives for which all significant valuation inputs are corroborated by market evidence and exchange-traded derivatives that are not actively traded and/or that are valued using models that calibrate to market-clearing levels of OTC derivatives. The selection of a particular model to value a derivative depends on the contractual terms of and specific risks inherent in the instrument, as well as the availability of pricing information in the market. For derivatives that trade in liquid markets, model selection does not involve significant management judgment because outputs of models can be calibrated to market-clearing levels. Valuation models require a variety of inputs, such as contractual terms, market prices, yield curves, discount rates (including those derived from interest rates on collateral received and posted as specified in credit support agreements for collateralized derivatives), credit curves, measures of volatility, prepayment rates, loss severity rates and correlations of such inputs. Significant inputs to the valuations of level 2 derivatives can be verified to market transactions, broker or dealer quotations or other alternative pricing sources with reasonable levels of price transparency. Consideration is given to the nature of the quotations (e.g., indicative or firm) and the relationship of recent market activity to the prices provided from alternative pricing sources. Level 3 Derivatives Level 3 derivatives are valued using models which utilize observable level 1 and/or level 2 inputs, as well as unobservable level 3 inputs. The significant unobservable inputs used to value the firm’s level 3 derivatives are described below. • For the majority of the firm’s interest rate and currency derivatives classified in level 3, significant unobservable inputs include correlations of certain currencies and interest rates (e.g., the correlation between Euro inflation and Euro interest rates) and specific interest rate volatilities. • For level 3 credit derivatives, significant unobservable inputs include illiquid credit spreads and upfront credit points, which are unique to specific reference obligations and reference entities, recovery rates and certain correlations required to value credit derivatives (e.g., the likelihood of default of the underlying reference obligation relative to one another). • For level 3 commodity derivatives, significant unobservable inputs include volatilities for options with strike prices that differ significantly from current market prices and prices or spreads for certain products for which the product quality or physical location of the commodity is not aligned with benchmark indices. • For level 3 equity derivatives, significant unobservable inputs generally include equity volatility inputs for options that are long-dated and/or have strike prices that differ significantly from current market prices. In addition, the valuation of certain structured trades requires the use of level 3 correlation inputs, such as the correlation of the price performance of two or more individual stocks or the correlation of the price performance for a basket of stocks to another asset class such as commodities. Subsequent to the initial valuation of a level 3 derivative, the firm updates the level 1 and level 2 inputs to reflect observable market changes and any resulting gains and losses are classified in level 3. Level 3 inputs are changed when corroborated by evidence such as similar market transactions, third-party pricing services and/or broker or dealer quotations or other empirical market data. In circumstances where the firm cannot verify the model value by reference to market transactions, it is possible that a different valuation model could produce a materially different estimate of fair value. See below for further information about significant unobservable inputs used in the valuation of level 3 derivatives. Valuation Adjustments Valuation adjustments are integral to determining the fair value of derivative portfolios and are used to adjust the mid-market In addition, for derivatives that include significant unobservable inputs, the firm makes model or exit price adjustments to account for the valuation uncertainty present in the transaction. Fair Value of Derivatives by Level The tables below present the fair value of derivatives on a gross basis by level and major product type, as well as the impact of netting, included in the consolidated statements of financial condition. As of December 2017 $ in millions Level 1 Level 2 Level 3 Total Assets Interest rates $ 18 $ 282,933 $ 311 $ 283,262 Credit – 19,053 3,640 22,693 Currencies – 95,401 140 95,541 Commodities – 13,727 353 14,080 Equities 8 50,870 409 51,287 Gross fair value 26 461,984 4,853 466,863 Counterparty netting in levels – (362,109 ) (1,051 ) (363,160 ) Subtotal $ 26 $ 99,875 $ 3,802 $ 103,703 Cross-level counterparty netting (894 ) Cash collateral netting (55,472 ) Net fair value $ 47,337 Liabilities Interest rates $ (28 ) $(252,421 ) $ (721 ) $(253,170 ) Credit – (19,135 ) (2,135 ) (21,270 ) Currencies – (96,160 ) (321 ) (96,481 ) Commodities – (15,842 ) (306 ) (16,148 ) Equities (28 ) (53,902 ) (1,658 ) (55,588 ) Gross fair value (56 ) (437,460 ) (5,141 ) (442,657 ) Counterparty netting in levels – 362,109 1,051 363,160 Subtotal $ (56 ) $ (75,351 ) $(4,090 ) $ (79,497 ) Cross-level counterparty netting 894 Cash collateral netting 38,972 Net fair value $ (39,631 ) As of December 2016 $ in millions Level 1 Level 2 Level 3 Total Assets Interest rates $ 46 $ 506,818 $ 614 $ 507,478 Credit – 21,388 4,979 26,367 Currencies – 111,762 187 111,949 Commodities – 11,950 403 12,353 Equities 1 47,667 424 48,092 Gross fair value 47 699,585 6,607 706,239 Counterparty netting in levels (12 ) (564,100 ) (1,417 ) (565,529 ) Subtotal $ 35 $ 135,485 $ 5,190 $ 140,710 Cross-level counterparty netting (1,709 ) Cash collateral netting (85,329 ) Net fair value $ 53,672 Liabilities Interest rates $ (27 ) $(457,963 ) $ (995 ) $(458,985 ) Credit – (21,106 ) (2,475 ) (23,581 ) Currencies – (107,212 ) (184 ) (107,396 ) Commodities – (13,541 ) (330 ) (13,871 ) Equities (967 ) (49,083 ) (3,840 ) (53,890 ) Gross fair value (994 ) (648,905 ) (7,824 ) (657,723 ) Counterparty netting in levels 12 564,100 1,417 565,529 Subtotal $(982 ) $ (84,805 ) $(6,407 ) $ (92,194 ) Cross-level counterparty netting 1,709 Cash collateral netting 42,986 Net fair value $ (47,499 ) In the tables above: • The gross fair values exclude the effects of both counterparty netting and collateral netting, and therefore are not representative of the firm’s exposure. • Counterparty netting is reflected in each level to the extent that receivable and payable balances are netted within the same level and is included in counterparty netting in levels. Where the counterparty netting is across levels, the netting is included in cross-level counterparty netting. • Derivative assets are shown as positive amounts and derivative liabilities are shown as negative amounts. Significant Unobservable Inputs The table below presents the amount of level 3 assets (liabilities), and ranges, averages and medians of significant unobservable inputs used to value the firm’s level 3 derivatives. Level 3 Assets (Liabilities) and Range of Significant $ in millions 2017 2016 Interest rates, net $(410) $(381) Correlation (10)% to 95% (71%/79%) (10)% to 86% (56%/60%) Volatility (bps) 31 to 150 (84/78) 31 to 151 (84/57) Credit, net $1,505 $2,504 Correlation 28% to 84% (61%/60%) 35% to 91% (65%/68%) Credit spreads (bps) 1 to 633 (69/42) 1 to 993 (122/73) Upfront credit points 0 to 97 (42/38) 0 to 100 (43/35) Recovery rates 22% to 73% (68%/73%) 1% to 97% (58%/70%) Currencies, net $(181) $3 Correlation 49% to 72% (61%/62%) 25% to 70% (50%/55%) Commodities, net $47 $73 Volatility 9% to 79% (24%/24%) 13% to 68% (33%/33%) Natural gas spread $(2.38) to $3.34 ($(0.22)/$(0.12)) $(1.81) to $4.33 ($(0.14)/$(0.05)) Oil spread $(2.86) to $23.61 ($6.47/$2.35) $(19.72) to $64.92 Equities, net $(1,249) $(3,416) Correlation (36)% to 94% (50%/52%) (39)% to 88% (41%/41%) Volatility 4% to 72% (24%/22%) 5% to 72% (24%/23%) In the table above: • Derivative assets are shown as positive amounts and derivative liabilities are shown as negative amounts. • Ranges represent the significant unobservable inputs that were used in the valuation of each type of derivative. • Averages represent the arithmetic average of the inputs and are not weighted by the relative fair value or notional of the respective financial instruments. An average greater than the median indicates that the majority of inputs are below the average. For example, the difference between the average and the median for credit spreads and oil spread inputs indicates that the majority of the inputs fall in the lower end of the range. • The ranges, averages and medians of these inputs are not representative of the appropriate inputs to use when calculating the fair value of any one derivative. For example, the highest correlation for interest rate derivatives is appropriate for valuing a specific interest rate derivative but may not be appropriate for valuing any other interest rate derivative. Accordingly, the ranges of inputs do not represent uncertainty in, or possible ranges of, fair value measurements of the firm’s level 3 derivatives. • Interest rates, currencies and equities derivatives are valued using option pricing models, credit derivatives are valued using option pricing, correlation and discounted cash flow models, and commodities derivatives are valued using option pricing and discounted cash flow models. • The fair value of any one instrument may be determined using multiple valuation techniques. For example, option pricing models and discounted cash flows models are typically used together to determine fair value. Therefore, the level 3 balance encompasses both of these techniques. • Correlation within currencies and equities includes cross-product type correlation. • Natural gas spread represents the spread per million British thermal units of natural gas. • Oil spread represents the spread per barrel of oil and refined products. Range of Significant Unobservable Inputs The following is information about the ranges of significant unobservable inputs used to value the firm’s level 3 derivative instruments: • Correlation. • Volatility. • Credit spreads, upfront credit points and recovery rates. • Commodity prices and spreads. Sensitivity of Fair Value Measurement to Changes in Significant Unobservable Inputs The following is a description of the directional sensitivity of the firm’s level 3 fair value measurements to changes in significant unobservable inputs, in isolation: • Correlation. • Volatility. • Credit spreads, upfront credit points and recovery rates. • Commodity prices and spreads. Due to the distinctive nature of each of the firm’s level 3 derivatives, the interrelationship of inputs is not necessarily uniform within each product type. Level 3 Rollforward The table below presents a summary of the changes in fair value for all level 3 derivatives. Year Ended December $ in millions 2017 2016 Total level 3 derivatives Beginning balance $(1,217 ) $ 495 Net realized gains/(losses) (119 ) (37 ) Net unrealized gains/(losses) (436 ) 777 Purchases 301 115 Sales (611 ) (3,557 ) Settlements 1,891 782 Transfers into level 3 (39 ) 352 Transfers out of level 3 (58 ) (144 ) Ending balance $ (288 ) $(1,217 ) In the table above: • Changes in fair value are presented for all derivative assets and liabilities that are classified in level 3 as of the end of the period. • Net unrealized gains/(losses) relates to instruments that were still held at period-end. • If a derivative was transferred into level 3 during a reporting period, its entire gain or loss for the period is classified in level 3. Transfers between levels are reported at the beginning of the reporting period in which they occur. • Positive amounts for transfers into level 3 and negative amounts for transfers out of level 3 represent net transfers of derivative assets. Negative amounts for transfers into level 3 and positive amounts for transfers out of level 3 represent net transfers of derivative liabilities. • A derivative with level 1 and/or level 2 inputs is classified in level 3 in its entirety if it has at least one significant level 3 input. • If there is one significant level 3 input, the entire gain or loss from adjusting only observable inputs (i.e., level 1 and level 2 inputs) is classified in level 3. • Gains or losses that have been classified in level 3 resulting from changes in level 1 or level 2 inputs are frequently offset by gains or losses attributable to level 1 or level 2 derivatives and/or level 1, level 2 and level 3 cash instruments. As a result, gains/(losses) included in the level 3 rollforward below do not necessarily represent the overall impact on the firm’s results of operations, liquidity or capital resources. The table below disaggregates, by major product type, the information for level 3 derivatives included in the summary table above. Year Ended December $ in millions 2017 2016 Interest rates, net Beginning balance $ (381 ) $ (398 ) Net realized gains/(losses) (62 ) (41 ) Net unrealized gains/(losses) 20 (138 ) Purchases 4 5 Sales (14 ) (3 ) Settlements 30 36 Transfers into level 3 (12 ) 195 Transfers out of level 3 5 (37 ) Ending balance $ (410 ) $ (381 ) Credit, net Beginning balance $ 2,504 $ 2,793 Net realized gains/(losses) 42 – Net unrealized gains/(losses) (188 ) 196 Purchases 20 20 Sales (27 ) (73 ) Settlements (739 ) (516 ) Transfers into level 3 3 179 Transfers out of level 3 (110 ) (95 ) Ending balance $ 1,505 $ 2,504 Currencies, net Beginning balance $ 3 $ (34 ) Net realized gains/(losses) (39 ) (30 ) Net unrealized gains/(losses) (192 ) (42 ) Purchases 4 14 Sales (3 ) (2 ) Settlements 62 90 Transfers into level 3 (9 ) 1 Transfers out of level 3 (7 ) 6 Ending balance $ (181 ) $ 3 Commodities, net Beginning balance $ 73 $ (262 ) Net realized gains/(losses) (4 ) (23 ) Net unrealized gains/(losses) 216 101 Purchases 102 24 Sales (301 ) (119 ) Settlements (27 ) 391 Transfers into level 3 (25 ) (23 ) Transfers out of level 3 13 (16 ) Ending balance $ 47 $ 73 Equities, net Beginning balance $(3,416 ) $(1,604 ) Net realized gains/(losses) (56 ) 57 Net unrealized gains/(losses) (292 ) 660 Purchases 171 52 Sales (266 ) (3,360 ) Settlements 2,565 781 Transfers into level 3 4 – Transfers out of level 3 41 (2 ) Ending balance $(1,249 ) $(3,416 ) Level 3 Rollforward Commentary Year Ended December 2017. The net realized and unrealized losses on level 3 derivatives of $555 million (reflecting $119 million of net realized losses and $436 million of net unrealized losses) for 2017 included losses of $90 million and $465 million reported in market making and other principal transactions, respectively. The net unrealized losses on level 3 derivatives for 2017 were primarily attributable to losses on certain equity derivatives, reflecting the impact of changes in equity prices, losses on certain currency derivatives, primarily reflecting the impact of changes in foreign exchanges rates, and losses on certain credit derivatives, reflecting the impact of tighter credit spreads, partially offset by gains on certain commodity derivatives, reflecting the impact of an increase in commodity prices. Transfers into level 3 derivatives during 2017 were not material. Transfers out of level 3 derivatives during 2017 primarily reflected transfers of certain credit derivatives assets to level 2, principally due to certain unobservable inputs no longer being significant to the valuation of these derivatives. Year Ended December 2016. The net realized and unrealized gains on level 3 derivatives of $740 million (reflecting $37 million of net realized losses and $777 million of net unrealized gains) for 2016 included gains/(losses) of approximately $980 million and $(240) million reported in market making and other principal transactions, respectively. The net unrealized gains on level 3 derivatives for 2016 were primarily attributable to gains on certain equity derivatives, reflecting the impact of an increase in equity prices. Transfers into level 3 derivatives during 2016 primarily reflected transfers of certain interest rate derivative assets from level 2, principally due to reduced transparency of certain unobservable inputs used to value these derivatives, and transfers of certain credit derivative assets from level 2 primarily due to unobservable credit spread inputs becoming significant to the net risk of certain portfolios. Transfers out of level 3 derivatives during 2016 primarily reflected transfers of certain credit derivatives assets to level 2, primarily due to unobservable credit spread inputs no longer being significant to the net risk of certain portfolios. OTC Derivatives The table below presents the fair values of OTC derivative assets and liabilities by tenor and major product type. $ in millions Less than 1 - 5 Greater than Total As of December 2017 Assets Interest rates $ 3,717 $15,445 $57,200 $ 76,362 Credit 760 4,079 3,338 8,177 Currencies 12,184 6,219 7,245 25,648 Commodities 3,175 2,526 181 5,882 Equities 4,969 5,607 1,387 11,963 Counterparty netting in tenors (3,719 ) (4,594 ) (2,807 ) (11,120 ) Subtotal $21,086 $29,282 $66,544 $116,912 Cross-tenor counterparty netting (16,404 ) Cash collateral netting (55,472 ) Total $ 45,036 Liabilities Interest rates $ 4,517 $ 8,471 $33,193 $ 46,181 Credit 2,078 3,588 1,088 6,754 Currencies 14,326 7,119 4,802 26,247 Commodities 3,599 2,167 2,465 8,231 Equities 6,453 6,647 3,381 16,481 Counterparty netting in tenors (3,719 ) (4,594 ) (2,807 ) (11,120 ) Subtotal $27,254 $23,398 $42,122 $ 92,774 Cross-tenor counterparty netting (16,404 ) Cash collateral netting (38,972 ) Total $ 37,398 As of December 2016 Assets Interest rates $ 5,845 $18,376 $79,507 $103,728 Credit 1,763 2,695 4,889 9,347 Currencies 18,344 8,292 8,428 35,064 Commodities 3,273 1,415 179 4,867 Equities 3,141 9,249 1,341 13,731 Counterparty netting in tenors (3,543 ) (5,550 ) (3,794 ) (12,887 ) Subtotal $28,823 $34,477 $90,550 $153,850 Cross-tenor counterparty netting (17,396 ) Cash collateral netting (85,329 ) Total $ 51,125 Liabilities Interest rates $ 5,679 $10,814 $38,812 $ 55,305 Credit 2,060 3,328 1,167 6,555 Currencies 14,720 9,771 5,879 30,370 Commodities 2,546 1,555 2,315 6,416 Equities 7,000 10,426 2,614 20,040 Counterparty netting in tenors (3,543 ) (5,550 ) (3,794 ) (12,887 ) Subtotal $28,462 $30,344 $46,993 $105,799 Cross-tenor counterparty netting (17,396 ) Cash collateral netting (42,986 ) Total $ 45,417 In the table above: • Tenor is based on expected duration for mortgage-related credit derivatives and generally on remaining contractual maturity for other derivatives. • Counterparty netting within the same product type and tenor category is included within such product type and tenor category. • Counterparty netting across product types within the same tenor category is included in counterparty netting in tenors. Where the counterparty netting is across tenor categories, the netting is included in cross-tenor counterparty netting. Credit Derivatives The firm enters into a broad array of credit derivatives in locations around the world to facilitate client transactions and to manage the credit risk associated with market-making and investing and lending activities. Credit derivatives are actively managed based on the firm’s net risk position. Credit derivatives are generally individually negotiated contracts and can have various settlement and payment conventions. Credit events include failure to pay, bankruptcy, acceleration of indebtedness, restructuring, repudiation and dissolution of the reference entity. The firm enters into the following types of credit derivatives: • Credit Default Swaps. • Credit Options. • Credit Indices, Baskets and Tranches. pro-rata • Total Return Swaps. The firm economically hedges its exposure to written credit derivatives primarily by entering into offsetting purchased credit derivatives with identical underliers. Substantially all of the firm’s purchased credit derivative transactions are with financial institutions and are subject to stringent collateral thresholds. In addition, upon the occurrence of a specified trigger event, the firm may take possession of the reference obligations underlying a particular written credit derivative, and consequently may, upon liquidation of the reference obligations, recover amounts on the underlying reference obligations in the event of default. As of December 2017, written and purchased credit derivatives had total gross notional amounts of $611.04 billion and $643.37 billion, respectively, for total net notional purchased protection of $32.33 billion. As of December 2016, written and purchased credit derivatives had total gross notional amounts of $690.47 billion and $733.98 billion, respectively, for total net notional purchased protection of $43.51 billion. Substantially all of the firm’s written and purchased credit derivatives are credit default swaps. The table below presents certain information about credit derivatives. Credit Spread on Underlier (basis points) $ in millions 0 - 250 251 - 501 - Greater Total As of December 2017 Maximum Payout/Notional Amount of Written Credit Derivatives by Tenor Less than 1 year $182,446 $ 8,531 $ 705 $ 4,067 $195,749 1 – 5 years 335,872 10,201 8,747 7,553 362,373 Greater than 5 years 49,440 2,142 817 519 52,918 Total $567,758 $20,874 $10,269 $12,139 $611,040 Maximum Payout/Notional Amount of Purchased Credit Derivatives Offsetting $492,325 $13,424 $ 9,395 $10,663 $525,807 Other 99,861 14,483 1,777 1,442 117,563 Fair Value of Written Credit Derivatives Asset $ 14,317 $ 513 $ 208 $ 155 $ 15,193 Liability 896 402 752 3,920 5,970 Net asset/(liability) $ 13,421 $ 111 $ (544 ) $ (3,765 ) $ 9,223 As of December 2016 Maximum Payout/Notional Amount of Written Credit Derivatives by Tenor Less than 1 year $207,727 $ 5,819 $ 1,016 $ 8,629 $223,191 1 – 5 years 375,208 17,255 8,643 7,986 409,092 Greater than 5 years 52,977 3,928 1,045 233 58,183 Total $635,912 $27,002 $10,704 $16,848 $690,466 Maximum Payout/Notional Amount of Purchased Credit Derivatives Offsetting $558,305 $20,588 $10,133 $15,186 $604,212 Other 119,509 7,712 1,098 1,446 129,765 Fair Value of Written Credit Derivatives Asset $ 13,919 $ 606 $ 187 $ 45 $ 14,757 Liability 2,436 902 809 5,686 9,833 Net asset/(liability) $ 11,483 $ (296 ) $ (622 ) $ (5,641 ) $ 4,924 In the table above: • Fair values exclude the effects of both netting of receivable balances with payable balances under enforceable netting agreements, and netting of cash received or posted under enforceable credit support agreements, and therefore are not representative of the firm’s credit exposure. • Tenor is based on expected duration for mortgage-related credit derivatives and on remaining contractual maturity for other credit derivatives. • The credit spread on the underlier, together with the tenor of the contract, are indicators of payment/performance risk. The firm is less likely to pay or otherwise be required to perform where the credit spread and the tenor are lower. • Offsetting purchased credit derivatives represent the notional amount of purchased credit derivatives that economically hedge written credit derivatives with identical underliers and are included in offsetting. • Other purchased credit derivatives represent the notional amount of all other purchased credit derivatives not included in offsetting. Impact of Credit Spreads on Derivatives On an ongoing basis, the firm realizes gains or losses relating to changes in credit risk through the unwind of derivative contracts and changes in credit mitigants. The net gain, including hedges, attributable to the impact of changes in credit exposure and credit spreads (counterparty and the firm’s) on derivatives was $66 million for 2017, $85 million for 2016 and $9 million for 2015. Bifurcated Embedded Derivatives The table below presents the fair value and the notional amount of derivatives that have been bifurcated from their related borrowings. As of December $ in millions 2017 2016 Fair value of assets $ 882 $ 676 Fair value of liabilities 1,200 864 Net liability $ 318 $ 188 Notional amount $9,578 $8,726 In the table above, these derivatives, which are recorded at fair value, primarily consist of interest rate, equity and commodity products and are included in unsecured short-term borrowings and unsecured long-term borrowings with the related borrowings. See Note 8 for further information. Derivatives with Credit-Related Contingent Features Certain of the firm’s derivatives have been transacted under bilateral agreements with counterparties who may require the firm to post collateral or terminate the transactions based on changes in the firm’s credit ratings. The firm assesses the impact of these bilateral agreements by determining the collateral or termination payments that would occur assuming a downgr

Fair Value Option

Fair Value Option	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value Option	Note 8. Fair Value Option Other Financial Assets and Financial Liabilities at Fair Value In addition to all cash and derivative instruments included in financial instruments owned and financial instruments sold, but not yet purchased, the firm accounts for certain of its other financial assets and financial liabilities at fair value, substantially all of which are accounted for at fair value under the fair value option. The primary reasons for electing the fair value option are to: • Reflect economic events in earnings on a timely basis; • Mitigate volatility in earnings from using different measurement attributes (e.g., transfers of financial instruments owned accounted for as financings are recorded at fair value, whereas the related secured financing would be recorded on an accrual basis absent electing the fair value option); and • Address simplification and cost-benefit considerations (e.g., accounting for hybrid financial instruments at fair value in their entirety versus bifurcation of embedded derivatives and hedge accounting for debt hosts). Hybrid financial instruments are instruments that contain bifurcatable embedded derivatives and do not require settlement by physical delivery of nonfinancial assets (e.g., physical commodities). If the firm elects to bifurcate the embedded derivative from the associated debt, the derivative is accounted for at fair value and the host contract is accounted for at amortized cost, adjusted for the effective portion of any fair value hedges. If the firm does not elect to bifurcate, the entire hybrid financial instrument is accounted for at fair value under the fair value option. Other financial assets and financial liabilities accounted for at fair value under the fair value option include: • Repurchase agreements and substantially all resale agreements; • Securities borrowed and loaned within Fixed Income, Currency and Commodities Client Execution (FICC Client Execution); • Substantially all other secured financings, including transfers of assets accounted for as financings rather than sales; • Certain unsecured short-term and long-term borrowings, substantially all of which are hybrid financial instruments; • Certain receivables from customers and counterparties, including transfers of assets accounted for as secured loans rather than purchases and certain margin loans; • Certain time deposits issued by the firm’s bank subsidiaries (deposits with no stated maturity are not eligible for a fair value option election), including structured certificates of deposit, which are hybrid financial instruments; and • Certain subordinated liabilities of consolidated VIEs. Fair Value of Other Financial Assets and Financial Liabilities by Level The table below presents, by level within the fair value hierarchy, other financial assets and financial liabilities at fair value, substantially all of which are accounted for at fair value under the fair value option. $ in millions Level 1 Level 2 Level 3 Total As of December 2017 Assets Securities purchased under agreements to resell $ – $ 120,420 $ – $ 120,420 Securities borrowed – 78,189 – 78,189 Receivables from customers and counterparties – 3,522 4 3,526 Total $ – $ 202,131 $ 4 $ 202,135 Liabilities Deposits $ – $ (19,934 ) $ (2,968 ) $ (22,902 ) Securities sold under agreements to repurchase – (84,681 ) (37 ) (84,718 ) Securities loaned – (5,357 ) – (5,357 ) Other secured financings – (23,956 ) (389 ) (24,345 ) Unsecured borrowings: Short-term – (12,310 ) (4,594 ) (16,904 ) Long-term – (31,204 ) (7,434 ) (38,638 ) Other liabilities and accrued – (228 ) (40 ) (268 ) Total $ – $(177,670 ) $(15,462 ) $(193,132 ) As of December 2016 Assets Securities purchased under agreements to resell $ – $ 116,077 $ – $ 116,077 Securities borrowed – 82,398 – 82,398 Receivables from customers and counterparties – 3,211 55 3,266 Total $ – $ 201,686 $ 55 $ 201,741 Liabilities Deposits $ – $ (10,609 ) $ (3,173 ) $ (13,782 ) Securities sold under agreements to repurchase – (71,750 ) (66 ) (71,816 ) Securities loaned – (2,647 ) – (2,647 ) Other secured financings – (20,516 ) (557 ) (21,073 ) Unsecured borrowings: Short-term – (10,896 ) (3,896 ) (14,792 ) Long-term – (22,185 ) (7,225 ) (29,410 ) Other liabilities and accrued – (559 ) (62 ) (621 ) Total $ – $(139,162 ) $(14,979 ) $(154,141 ) In the table above, other financial assets are shown as positive amounts and other financial liabilities are shown as negative amounts. Valuation Techniques and Significant Inputs Other financial assets and financial liabilities at fair value are generally valued based on discounted cash flow techniques, which incorporate inputs with reasonable levels of price transparency, and are generally classified in level 2 because the inputs are observable. Valuation adjustments may be made for liquidity and for counterparty and the firm’s credit quality. See below for information about the significant inputs used to value other financial assets and financial liabilities at fair value, including the ranges of significant unobservable inputs used to value the level 3 instruments within these categories. These ranges represent the significant unobservable inputs that were used in the valuation of each type of other financial assets and financial liabilities at fair value. The ranges and weighted averages of these inputs are not representative of the appropriate inputs to use when calculating the fair value of any one instrument. For example, the highest yield presented below for other secured financings is appropriate for valuing a specific agreement in that category but may not be appropriate for valuing any other agreements in that category. Accordingly, the ranges of inputs presented below do not represent uncertainty in, or possible ranges of, fair value measurements of the firm’s level 3 other financial assets and financial liabilities. Resale and Repurchase Agreements and Securities Borrowed and Loaned. The significant inputs to the valuation of resale and repurchase agreements and securities borrowed and loaned are funding spreads, the amount and timing of expected future cash flows and interest rates. As of both December 2017 and December 2016, the firm had no level 3 resale agreements, securities borrowed or securities loaned. As of both December 2017 and December 2016, the firm’s level 3 repurchase agreements were not material. See Note 10 for further information about collateralized agreements and financings. Other Secured Financings. The significant inputs to the valuation of other secured financings at fair value are the amount and timing of expected future cash flows, interest rates, funding spreads, the fair value of the collateral delivered by the firm (which is determined using the amount and timing of expected future cash flows, market prices, market yields and recovery assumptions) and the frequency of additional collateral calls. The ranges of significant unobservable inputs used to value level 3 other secured financings are as follows: As of December 2017: • Yield: 0.6% to 13.0% (weighted average: 3.3%) • Duration: 0.7 to 11.0 years (weighted average: 2.7 years) As of December 2016: • Yield: 0.4% to 16.6% (weighted average: 3.5%) • Duration: 0.1 to 5.7 years (weighted average: 2.3 years) Generally, increases in funding spreads, yield or duration, in isolation, would result in a lower fair value measurement. Due to the distinctive nature of each of the firm’s level 3 other secured financings, the interrelationship of inputs is not necessarily uniform across such financings. See Note 10 for further information about collateralized agreements and financings. Unsecured Short-term and Long-term Borrowings. The significant inputs to the valuation of unsecured short-term and long-term borrowings at fair value are the amount and timing of expected future cash flows, interest rates, the credit spreads of the firm, as well as commodity prices in the case of prepaid commodity transactions. The inputs used to value the embedded derivative component of hybrid financial instruments are consistent with the inputs used to value the firm’s other derivative instruments. See Note 7 for further information about derivatives. See Notes 15 and 16 for further information about unsecured short-term and long-term borrowings, respectively. Certain of the firm’s unsecured short-term and long-term borrowings are classified in level 3, substantially all of which are hybrid financial instruments. As the significant unobservable inputs used to value hybrid financial instruments primarily relate to the embedded derivative component of these borrowings, these inputs are incorporated in the firm’s derivative disclosures related to unobservable inputs in Note 7. Receivables from Customers and Counterparties. Receivables from customers and counterparties at fair value primarily consist of transfers of assets accounted for as secured loans rather than purchases. The significant inputs to the valuation of such receivables are commodity prices, interest rates, the amount and timing of expected future cash flows and funding spreads. As of both December 2017 and December 2016, the firm’s level 3 receivables from customers and counterparties were not material. Deposits. The significant inputs to the valuation of time deposits are interest rates and the amount and timing of future cash flows. The inputs used to value the embedded derivative component of hybrid financial instruments are consistent with the inputs used to value the firm’s other derivative instruments. See Note 7 for further information about derivatives and Note 14 for further information about deposits. The firm’s deposits that are classified in level 3 are hybrid financial instruments. As the significant unobservable inputs used to value hybrid financial instruments primarily relate to the embedded derivative component of these deposits, these inputs are incorporated in the firm’s derivative disclosures related to unobservable inputs in Note 7. Transfers Between Levels of the Fair Value Hierarchy Transfers between levels of the fair value hierarchy are reported at the beginning of the reporting period in which they occur. There were no transfers of other financial assets and financial liabilities between level 1 and level 2 during both 2017 and 2016. See “Level 3 Rollforward” below for information about transfers between level 2 and level 3. Level 3 Rollforward The table below presents a summary of the changes in fair value for level 3 other financial assets and financial liabilities accounted for at fair value. Year Ended December $ in millions 2017 2016 Total other financial assets Beginning balance $ 55 $ 45 Net realized gains/(losses) – 6 Net unrealized gains/(losses) – 1 Purchases 1 10 Settlements (52 ) (7 ) Ending balance $ 4 $ 55 Total other financial liabilities Beginning balance $(14,979 ) $(11,244 ) Net realized gains/(losses) (362 ) (99 ) Net unrealized gains/(losses) (1,047 ) (7 ) Purchases (3 ) (8 ) Sales 1 – Issuances (8,382 ) (10,236 ) Settlements 6,859 5,983 Transfers into level 3 (611 ) (759 ) Transfers out of level 3 3,062 1,391 Ending balance $(15,462 ) $(14,979 ) In the table above: • Changes in fair value are presented for all other financial assets and financial liabilities that are classified in level 3 as of the end of the period. • Net unrealized gains/(losses) relates to instruments that were still held at period-end. • If a financial asset or financial liability was transferred to level 3 during a reporting period, its entire gain or loss for the period is classified in level 3. For level 3 other financial assets, increases are shown as positive amounts, while decreases are shown as negative amounts. For level 3 other financial liabilities, increases are shown as negative amounts, while decreases are shown as positive amounts. • Level 3 other financial assets and financial liabilities are frequently economically hedged with cash instruments and derivatives. Accordingly, gains or losses that are classified in level 3 can be partially offset by gains or losses attributable to level 1, 2 or 3 cash instruments or derivatives. As a result, gains or losses included in the level 3 rollforward below do not necessarily represent the overall impact on the firm’s results of operations, liquidity or capital resources. The table below disaggregates, by the consolidated statements of financial condition line items, the information for other financial liabilities included in the summary table above. Year Ended December $ in millions 2017 2016 Deposits Beginning balance $(3,173 ) $(2,215 ) Net realized gains/(losses) (6 ) (22 ) Net unrealized gains/(losses) (239 ) (89 ) Issuances (661 ) (993 ) Settlements 232 146 Transfers out of level 3 879 – Ending balance $(2,968 ) $(3,173 ) Securities sold under agreements to repurchase Beginning balance $ (66 ) $ (71 ) Net unrealized gains/(losses) (1 ) (6 ) Settlements 30 11 Ending balance $ (37 ) $ (66 ) Other secured financings Beginning balance $ (557 ) $ (549 ) Net realized gains/(losses) 17 (8 ) Net unrealized gains/(losses) (40 ) (3 ) Purchases (3 ) (5 ) Sales 1 – Issuances (32 ) (150 ) Settlements 171 273 Transfers into level 3 (12 ) (117 ) Transfers out of level 3 66 2 Ending balance $ (389 ) $ (557 ) Unsecured short-term borrowings Beginning balance $(3,896 ) $(4,133 ) Net realized gains/(losses) (332 ) (57 ) Net unrealized gains/(losses) (230 ) (115 ) Issuances (4,599 ) (3,837 ) Settlements 3,675 3,492 Transfers into level 3 (131 ) (370 ) Transfers out of level 3 919 1,124 Ending balance $(4,594 ) $(3,896 ) Unsecured long-term borrowings Beginning balance $(7,225 ) $(4,224 ) Net realized gains/(losses) (60 ) (27 ) Net unrealized gains/(losses) (559 ) 190 Purchases – (3 ) Issuances (3,071 ) (5,201 ) Settlements 2,751 2,047 Transfers into level 3 (468 ) (272 ) Transfers out of level 3 1,198 265 Ending balance $(7,434 ) $(7,225 ) Other liabilities and accrued expenses Beginning balance $ (62 ) $ (52 ) Net realized gains/(losses) 19 15 Net unrealized gains/(losses) 22 16 Issuances (19 ) (55 ) Settlements – 14 Ending balance $ (40 ) $ (62 ) Level 3 Rollforward Commentary Year Ended December 2017. The net realized and unrealized losses on level 3 other financial liabilities of $1.41 billion (reflecting $362 million of net realized losses and $1.05 billion of net unrealized losses) for 2017 included losses of $1.20 billion, $45 million and $10 million reported in market making, other principal transactions and interest expense, respectively, in the consolidated statements of earnings, and losses of $149 million reported in debt valuation adjustment in the consolidated statements of comprehensive income. The net unrealized losses on level 3 other financial liabilities for 2017 primarily reflected losses on certain hybrid financial instruments included in unsecured long-term and short-term borrowings, principally due to an increase in global equity prices and the impact of tighter credit spreads, and losses on certain hybrid financial instruments included in deposits, principally due to the impact of an increase in the market value of the underlying assets. Transfers into level 3 of other financial liabilities during 2017 primarily reflected transfers of certain hybrid financial instruments included in unsecured long-term borrowings from level 2, principally due to reduced transparency of volatility inputs used to value these instruments. Transfers out of level 3 of other financial liabilities during 2017 primarily reflected transfers of certain hybrid financial instruments included in unsecured long-term and short-term borrowings to level 2, principally due to increased transparency of certain inputs used to value these instruments as a result of market transactions in similar instruments, and transfers of certain hybrid financial instruments included in deposits to level 2, principally due to increased transparency of correlation and volatility inputs used to value these instruments. Year Ended December 2016. The net realized and unrealized losses on level 3 other financial liabilities of $106 million (reflecting $99 million of net realized losses and $7 million of net unrealized losses) for 2016 included losses of approximately $21 million and $10 million reported in market making and interest expense, respectively, in the consolidated statements of earnings, and losses of $75 million reported in debt valuation adjustment in the consolidated statements of comprehensive income. The net unrealized losses on level 3 other financial liabilities for 2016 primarily reflected losses on certain hybrid financial instruments included in unsecured short-term borrowings, principally due to an increase in global equity prices, and losses on certain hybrid financial instruments included in deposits, principally due to the impact of an increase in the market value of the underlying assets, partially offset by gains on certain hybrid financial instruments included in unsecured long-term borrowings, principally due to changes in foreign exchange rates. Transfers into level 3 of other financial liabilities during 2016 primarily reflected transfers of certain hybrid financial instruments included in unsecured short-term and long-term borrowings from level 2, principally due to reduced transparency of certain inputs, including correlation and volatility inputs used to value these instruments. Transfers out of level 3 of other financial liabilities during 2016 primarily reflected transfers of certain hybrid financial instruments included in unsecured short-term and long-term borrowings to level 2, principally due to increased transparency of correlation and volatility inputs used to value these instruments. Gains and Losses on Financial Assets and Financial Liabilities Accounted for at Fair Value Under the Fair Value Option The table below presents the gains and losses recognized in earnings as a result of the firm electing to apply the fair value option to certain financial assets and financial liabilities. Year Ended December $ in millions 2017 2016 2015 Unsecured short-term borrowings $(2,585 ) $(1,028 ) $ 346 Unsecured long-term borrowings (1,357 ) 584 771 Other liabilities and accrued expenses 222 (55 ) (684 ) Other (620 ) (630 ) (217 ) Total $(4,340 ) $(1,129 ) $ 216 In the table above: • Gains/(losses) are included in market making and other principal transactions. • Gains/(losses) exclude contractual interest, which is included in interest income and interest expense, for all instruments other than hybrid financial instruments. See Note 23 for further information about interest income and interest expense. • Gains/(losses) included in unsecured short-term borrowings are substantially all related to the embedded derivative component of hybrid financial instruments for 2017, 2016 and 2015. Gains/(losses) included in unsecured long-term borrowings are primarily related to the embedded derivative component of hybrid financial instruments for 2017, 2016 and 2015. These gains and losses would have been recognized under other U.S. GAAP even if the firm had not elected to account for the entire hybrid financial instrument at fair value. • Other liabilities and accrued expenses includes gains/(losses) on certain subordinated liabilities of consolidated VIEs. • Other primarily consists of gains/(losses) on receivables from customers and counterparties, deposits and other secured financings. Excluding the gains and losses on the instruments accounted for under the fair value option described above, market making and other principal transactions primarily represent gains and losses on financial instruments owned and financial instruments sold, but not yet purchased. Loans and Lending Commitments The table below presents the difference between the aggregate fair value and the aggregate contractual principal amount for loans and long-term receivables for which the fair value option was elected. As of December $ in millions 2017 2016 Performing loans and long-term receivables Aggregate contractual principal in excess of fair value $ 952 $ 478 Loans on nonaccrual status and/or more than 90 days past due Aggregate contractual principal in excess of fair value $5,266 $8,101 Aggregate fair value of loans on nonaccrual status and/or more than 90 days past due $2,104 $2,138 In the table above, the aggregate contractual principal amount of loans on nonaccrual status and/or more than 90 days past due (which excludes loans carried at zero fair value and considered uncollectible) exceeds the related fair value primarily because the firm regularly purchases loans, such as distressed loans, at values significantly below the contractual principal amounts. As of December 2017 and December 2016, the fair value of unfunded lending commitments for which the fair value option was elected was a liability of $31 million and $80 million, respectively, and the related total contractual amount of these lending commitments was $9.94 billion and $7.19 billion, respectively. See Note 18 for further information about lending commitments. Long-Term Debt Instruments The difference between the aggregate contractual principal amount and the related fair value of long-term other secured financings for which the fair value option was elected was not material as of December 2017, and the aggregate contractual principal amount exceeded the related fair value by $361 million as of December 2016. The aggregate contractual principal amount of unsecured long-term borrowings for which the fair value option was elected exceeded the related fair value by $1.69 billion and $1.56 billion as of December 2017 and December 2016, respectively. The amounts above include both principal- and non-principal-protected Impact of Credit Spreads on Loans and Lending Commitments The estimated net gain attributable to changes in instrument-specific credit spreads on loans and lending commitments for which the fair value option was elected was $268 million for 2017, $281 million for 2016 and $751 million for 2015. The firm generally calculates the fair value of loans and lending commitments for which the fair value option is elected by discounting future cash flows at a rate which incorporates the instrument-specific credit spreads. For floating-rate loans and lending commitments, substantially all changes in fair value are attributable to changes in instrument-specific credit spreads, whereas for fixed-rate loans and lending commitments, changes in fair value are also attributable to changes in interest rates. Debt Valuation Adjustment The firm calculates the fair value of financial liabilities for which the fair value option is elected by discounting future cash flows at a rate which incorporates the firm’s credit spreads. The table below presents details about the net DVA losses on such financial liabilities. Year Ended December $ in millions 2017 2016 DVA (pre-tax) $(1,232 ) $(844 ) DVA (net of tax) $ (807 ) $(544 ) In the table above: • DVA (net of tax) is included in debt valuation adjustment in the consolidated statements of comprehensive income. • The gains/(losses) reclassified to earnings from accumulated other comprehensive loss upon extinguishment of such financial liabilities were not material for both 2017 and 2016.

Loans Receivable

Loans Receivable	12 Months Ended
	Dec. 31, 2017
Receivables [Abstract]
Loans Receivable	Note 9. Loans Receivable Loans receivable consists of loans held for investment that are accounted for at amortized cost net of allowance for loan losses. Interest on loans receivable is recognized over the life of the loan and is recorded on an accrual basis. The table below presents details about loans receivable. As of December $ in millions 2017 2016 Corporate loans $30,749 $24,837 Loans to PWM clients 16,591 13,828 Loans backed by commercial real estate 7,987 4,761 Loans backed by residential real estate 6,234 3,865 Marcus loans 1,912 208 Other loans 3,263 2,682 Total loans receivable, gross 66,736 50,181 Allowance for loan losses (803 ) (509 ) Total loans receivable $65,933 $49,672 As of December 2017 and December 2016, the fair value of loans receivable was $66.29 billion and $49.80 billion, respectively. Had these loans been carried at fair value and included in the fair value hierarchy, $38.75 billion and $28.40 billion would have been classified in level 2, and $27.54 billion and $21.40 billion would have been classified in level 3, as of December 2017 and December 2016, respectively. The following is a description of the captions in the table above: • Corporate Loans. • Loans to Private Wealth Management Clients. • Loans Backed by Commercial Real Estate. • Loans Backed by Residential Real Estate. • Marcus Loans. • Other Loans. The firm monitors the geographic diversification of loans receivable. The regional composition of such loans was approximately 79% and 78% in the Americas, approximately 17% and 18% in Europe, Middle East and Africa (EMEA), and approximately 4% and 4% in Asia as of December 2017 and December 2016, respectively. Lending Commitments The table below presents details about lending commitments that are held for investment and accounted for on an accrual basis. As of December $ in millions 2017 2016 Corporate $118,553 $93,407 Other 5,951 4,638 Total $124,504 $98,045 In the table above: • Corporate lending commitments primarily relates to the firm’s relationship lending activities. • Other lending commitments primarily relates to lending commitments extended by the firm to clients who warehouse assets backed by real estate and other assets. • The carrying value of lending commitments were liabilities of $423 million (including allowance for losses of $274 million) and $327 million (including allowance for losses of $212 million) as of December 2017 and December 2016, respectively. • The estimated fair value of such lending commitments were liabilities of $2.27 billion and $2.55 billion as of December 2017 and December 2016, respectively. Had these lending commitments been carried at fair value and included in the fair value hierarchy, $772 million and $1.10 billion would have been classified in level 2, and $1.50 billion and $1.45 billion would have been classified in level 3, as of December 2017 and December 2016, respectively. Purchased Credit Impaired (PCI) Loans Loans receivable includes PCI loans, which represent acquired loans or pools of loans with evidence of credit deterioration subsequent to their origination and where it is probable, at acquisition, that the firm will not be able to collect all contractually required payments. Loans acquired within the same reporting period, which have at least two common risk characteristics, one of which relates to their credit risk, are eligible to be pooled together and considered a single unit of account. PCI loans are initially recorded at the acquisition price and the difference between the acquisition price and the expected cash flows (accretable yield) is recognized as interest income over the life of such loans or pools of loans on an effective yield method. Expected cash flows on PCI loans are determined using various inputs and assumptions, including default rates, loss severities, recoveries, amount and timing of prepayments and other macroeconomic indicators. The table below presents details about PCI loans. As of December $ in millions 2017 2016 Loans backed by commercial real estate $1,116 $1,444 Loans backed by residential real estate 3,327 2,508 Other loans 10 18 Total gross carrying value $4,453 $3,970 Total outstanding principal balance $9,512 $8,515 Total accretable yield $ 662 $ 526 The table below presents details about PCI loans at the time of acquisition. Year Ended December $ in millions 2017 2016 2015 Fair value $1,769 $2,514 $2,267 Expected cash flows $1,961 $2,818 $2,499 Contractually required cash flows $4,092 $6,389 $6,472 Credit Quality Risk Assessment. The firm’s risk assessment process includes evaluating the credit quality of its loans receivable. For loans receivable (excluding PCI and Marcus loans) and lending commitments, the firm performs credit reviews which include initial and ongoing analyses of its borrowers. A credit review is an independent analysis of the capacity and willingness of a borrower to meet its financial obligations, resulting in an internal credit rating. The determination of internal credit ratings also incorporates assumptions with respect to the nature of and outlook for the borrower’s industry and the economic environment. The firm also assigns a regulatory risk rating to such loans based on the definitions provided by the U.S. federal bank regulatory agencies. The firm enters into economic hedges to mitigate credit risk on certain loans receivable and corporate lending commitments (both of which are held for investment) related to the firm’s relationship lending activities. Such hedges are accounted for at fair value. See Note 18 for further information about these lending commitments and associated hedges. The table below presents gross loans receivable (excluding PCI and Marcus loans of $6.37 billion and $4.18 billion as of December 2017 and December 2016, respectively) and lending commitments by the firm’s internally determined public rating agency equivalent and by regulatory risk rating. $ in millions Loans Lending Total Credit Rating Equivalent As of December 2017 Investment-grade $24,192 $ 89,409 $113,601 Non-investment-grade 36,179 35,095 71,274 Total $60,371 $124,504 $184,875 As of December 2016 Investment-grade $18,434 $ 72,323 $ 90,757 Non-investment-grade 27,569 25,722 53,291 Total $46,003 $ 98,045 $144,048 Regulatory Risk Rating As of December 2017 Non-criticized/pass $56,720 $119,427 $176,147 Criticized 3,651 5,077 8,728 Total $60,371 $124,504 $184,875 As of December 2016 Non-criticized/pass $42,938 $ 94,966 $137,904 Criticized 3,065 3,079 6,144 Total $46,003 $ 98,045 $144,048 In the table above, non-criticized/pass For Marcus loans, an important credit-quality indicator is the Fair Isaac Corporation (FICO) credit score, which measures a borrower’s creditworthiness by considering factors such as payment and credit history. FICO credit scores are refreshed periodically by the firm to assess the updated creditworthiness of the borrower. As of December 2017 and December 2016, greater than 80% of the Marcus loans receivable had an underlying FICO credit score above 660 (with a weighted average FICO credit score in excess of 700). For PCI loans, the firm’s risk assessment process includes reviewing certain key metrics, such as delinquency status, collateral values, expected cash flows and other risk factors. Impaired Loans. Loans receivable (excluding PCI loans) are determined to be impaired when it is probable that the firm will not be able to collect all principal and interest due under the contractual terms of the loan. At that time, loans are generally placed on nonaccrual status and all accrued but uncollected interest is reversed against interest income, and interest subsequently collected is recognized on a cash basis to the extent the loan balance is deemed collectible. Otherwise, all cash received is used to reduce the outstanding loan balance. In certain circumstances, the firm may also modify the original terms of a loan agreement by granting a concession to a borrower experiencing financial difficulty. Such modifications are considered troubled debt restructurings and typically include interest rate reductions, payment extensions, and modification of loan covenants. Loans modified in a troubled debt restructuring are considered impaired and are subject to specific loan-level reserves. As of December 2017 and December 2016, the gross carrying value of impaired loans receivable (excluding PCI loans) on nonaccrual status was $845 million and $404 million, respectively. As of December 2017 and December 2016, such loans included $61 million and $142 million, respectively, of corporate loans that were modified in a troubled debt restructuring. The firm did not have any lending commitments related to these loans as of December 2017. Such lending commitments were $144 million as of December 2016. When it is determined that the firm cannot reasonably estimate expected cash flows on PCI loans or pools of loans, such loans are placed on nonaccrual status. Allowance for Losses on Loans and Lending Commitments The firm’s allowance for loan losses consists of specific loan-level reserves, portfolio level reserves and reserves on PCI loans as described below: • Specific loan-level reserves are determined on loans (excluding PCI loans) that exhibit credit quality weakness and are therefore individually evaluated for impairment. • Portfolio level reserves are determined on loans (excluding PCI loans) not evaluated for specific loan-level reserves by aggregating groups of loans with similar risk characteristics and estimating the probable loss inherent in the portfolio. • Reserves on PCI loans are recorded when it is determined that the expected cash flows, which are reassessed on a quarterly basis, will be lower than those used to establish the current effective yield for such loans or pools of loans. If the expected cash flows are determined to be significantly higher than those used to establish the current effective yield, such increases are initially recognized as a reduction to any previously recorded allowances for loan losses and any remaining increases are recognized as interest income prospectively over the life of the loan or pools of loans as an increase to the effective yield. The allowance for loan losses is determined using various risk factors, including industry default and loss data, current macroeconomic indicators, borrower’s capacity to meet its financial obligations, borrower’s country of risk, loan seniority and collateral type. In addition, for loans backed by real estate, risk factors include loan to value ratio, debt service ratio and home price index. Risk factors for Marcus loans include FICO credit scores and delinquency status. Management’s estimate of loan losses entails judgment about loan collectability at the reporting dates, and there are uncertainties inherent in those judgments. While management uses the best information available to determine this estimate, future adjustments to the allowance may be necessary based on, among other things, changes in the economic environment or variances between actual results and the original assumptions used. Loans are charged off against the allowance for loan losses when deemed to be uncollectible. The firm also records an allowance for losses on lending commitments that are held for investment and accounted for on an accrual basis. Such allowance is determined using the same methodology as the allowance for loan losses, while also taking into consideration the probability of drawdowns or funding, and is included in other liabilities and accrued expenses. The tables below present gross loans receivable and lending commitments by impairment methodology. As of December 2017 $ in millions Specific Portfolio PCI Total Loans Receivable Corporate loans $377 $ 30,372 $ – $ 30,749 Loans to PWM clients 163 16,428 – 16,591 Loans backed by: Commercial real estate – 6,871 1,116 7,987 Residential real estate 231 2,676 3,327 6,234 Marcus loans – 1,912 – 1,912 Other loans 74 3,179 10 3,263 Total $845 $ 61,438 $4,453 $ 66,736 Lending Commitments Corporate $ 53 $118,500 $ – $118,553 Other – 5,951 – 5,951 Total $ 53 $124,451 $ – $124,504 As of December 2016 $ in millions Specific Portfolio PCI Total Loans Receivable Corporate loans $327 $ 24,510 $ – $ 24,837 Loans to PWM clients 77 13,751 – 13,828 Loans backed by: Commercial real estate – 3,317 1,444 4,761 Residential real estate – 1,357 2,508 3,865 Marcus loans – 208 – 208 Other loans – 2,664 18 2,682 Total $404 $ 45,807 $3,970 $ 50,181 Lending Commitments Corporate $211 $ 93,196 $ – $ 93,407 Other – 4,638 – 4,638 Total $211 $ 97,834 $ – $ 98,045 In the tables above, gross loans receivable and lending commitments, subject to specific loan-level reserves, included $492 million and $122 million of impaired loans and lending commitments as of December 2017 and December 2016, respectively, which did not require a reserve as the loan was deemed to be recoverable. The table below presents changes in the allowance for loan losses and the allowance for losses on lending commitments, as well as details by impairment methodology. Year Ended December 2017 Year Ended December 2016 $ in millions Loans Lending Loans Lending Changes in the allowance for losses Beginning balance $ 509 $212 $414 $188 Charge-offs (203 ) – (8 ) – Provision 574 83 138 44 Other (77 ) (21 ) (35 ) (20 ) Ending balance $ 803 $274 $509 $212 Allowance for losses by impairment methodology Specific $ 119 $ 14 $127 $ 39 Portfolio 518 260 370 173 PCI 166 – 12 – Total $ 803 $274 $509 $212 In the table above: • The provision for losses on loans and lending commitments is included in other principal transactions, and was primarily related to corporate loans and lending commitments, and loans backed by commercial real estate. • Other represents the reduction to the allowance related to loans and lending commitments transferred to held for sale. • Portfolio level reserves were primarily related to corporate loans, specific loan-level reserves were substantially all related to corporate loans and reserves on PCI loans were related to loans backed by real estate. • Substantially all of the allowance for losses on lending commitments were related to corporate lending commitments.

Collateralized Agreements and F

Collateralized Agreements and Financings	12 Months Ended
	Dec. 31, 2017
Text Block [Abstract]
Collateralized Agreements and Financings	Note 10. Collateralized Agreements and Financings Collateralized agreements are securities purchased under agreements to resell (resale agreements) and securities borrowed. Collateralized financings are securities sold under agreements to repurchase (repurchase agreements), securities loaned and other secured financings. The firm enters into these transactions in order to, among other things, facilitate client activities, invest excess cash, acquire securities to cover short positions and finance certain firm activities. Collateralized agreements and financings are presented on a net-by-counterparty The table below presents the carrying value of resale and repurchase agreements and securities borrowed and loaned transactions. As of December $ in millions 2017 2016 Securities purchased under agreements to resell $120,822 $116,925 Securities borrowed $190,848 $184,600 Securities sold under agreements to repurchase $ 84,718 $ 71,816 Securities loaned $ 14,793 $ 7,524 In the table above: • Substantially all resale agreements and all repurchase agreements are carried at fair value under the fair value option. See Note 8 for further information about the valuation techniques and significant inputs used to determine fair value. • As of December 2017 and December 2016, $78.19 billion and $82.40 billion of securities borrowed, and $5.36 billion and $2.65 billion of securities loaned were at fair value, respectively. Resale and Repurchase Agreements A resale agreement is a transaction in which the firm purchases financial instruments from a seller, typically in exchange for cash, and simultaneously enters into an agreement to resell the same or substantially the same financial instruments to the seller at a stated price plus accrued interest at a future date. A repurchase agreement is a transaction in which the firm sells financial instruments to a buyer, typically in exchange for cash, and simultaneously enters into an agreement to repurchase the same or substantially the same financial instruments from the buyer at a stated price plus accrued interest at a future date. Even though repurchase and resale agreements (including “repos- and reverses-to-maturity”) The firm receives financial instruments purchased under resale agreements and makes delivery of financial instruments sold under repurchase agreements. To mitigate credit exposure, the firm monitors the market value of these financial instruments on a daily basis, and delivers or obtains additional collateral due to changes in the market value of the financial instruments, as appropriate. For resale agreements, the firm typically requires collateral with a fair value approximately equal to the carrying value of the relevant assets in the consolidated statements of financial condition. Securities Borrowed and Loaned Transactions In a securities borrowed transaction, the firm borrows securities from a counterparty in exchange for cash or securities. When the firm returns the securities, the counterparty returns the cash or securities. Interest is generally paid periodically over the life of the transaction. In a securities loaned transaction, the firm lends securities to a counterparty in exchange for cash or securities. When the counterparty returns the securities, the firm returns the cash or securities posted as collateral. Interest is generally paid periodically over the life of the transaction. The firm receives securities borrowed and makes delivery of securities loaned. To mitigate credit exposure, the firm monitors the market value of these securities on a daily basis, and delivers or obtains additional collateral due to changes in the market value of the securities, as appropriate. For securities borrowed transactions, the firm typically requires collateral with a fair value approximately equal to the carrying value of the securities borrowed transaction. Securities borrowed and loaned within FICC Client Execution are recorded at fair value under the fair value option. See Note 8 for further information about securities borrowed and loaned accounted for at fair value. Securities borrowed and loaned within Securities Services are recorded based on the amount of cash collateral advanced or received plus accrued interest. As these agreements generally can be terminated on demand, they exhibit little, if any, sensitivity to changes in interest rates. Therefore, the carrying value of such agreements approximates fair value. While these agreements are carried at amounts that approximate fair value, they are not accounted for at fair value under the fair value option or at fair value in accordance with other U.S. GAAP and therefore are not included in the firm’s fair value hierarchy in Notes 6 through 8. Had these agreements been included in the firm’s fair value hierarchy, they would have been classified in level 2 as of both December 2017 and December 2016. Offsetting Arrangements The table below presents the gross and net resale and repurchase agreements and securities borrowed and loaned transactions, and the related amount of counterparty netting included in the consolidated statements of financial condition, as well as the amounts of counterparty netting and cash and securities collateral, not offset in the consolidated statements of financial condition. Assets Liabilities $ in millions Resale Securities Repurchase Securities As of December 2017 Included in consolidated statements of financial condition Gross carrying value $ 209,972 $ 195,783 $173,868 $19,728 Counterparty netting (89,150 ) (4,935 ) (89,150 ) (4,935 ) Total 120,822 190,848 84,718 14,793 Amounts not offset Counterparty netting (5,441 ) (4,412 ) (5,441 ) (4,412 ) Collateral (113,305 ) (177,679 ) (76,793 ) (9,731 ) Total $ 2,076 $ 8,757 $ 2,484 $ 650 As of December 2016 Included in consolidated statements of financial condition Gross carrying value $ 173,561 $ 189,571 $128,452 $12,495 Counterparty netting (56,636 ) (4,971 ) (56,636 ) (4,971 ) Total 116,925 184,600 71,816 7,524 Amounts not offset Counterparty netting (8,319 ) (4,045 ) (8,319 ) (4,045 ) Collateral (107,148 ) (170,625 ) (62,081 ) (3,087 ) Total $ 1,458 $ 9,930 $ 1,416 $ 392 In the table above: • Substantially all of the gross carrying values of these arrangements are subject to enforceable netting agreements. • Where the firm has received or posted collateral under credit support agreements, but has not yet determined such agreements are enforceable, the related collateral has not been netted. • Amounts not offset includes counterparty netting that does not meet the criteria for netting under U.S. GAAP and the fair value of cash or securities collateral received or posted subject to enforceable credit support agreements. Gross Carrying Value of Repurchase Agreements and Securities Loaned The table below presents the gross carrying value of repurchase agreements and securities loaned by class of collateral pledged. $ in millions Repurchase Securities As of December 2017 Money market instruments $ 97 $ – U.S. government and agency obligations 80,591 – Non-U.S. 73,031 2,245 Securities backed by commercial real estate 43 – Securities backed by residential real estate 338 – Corporate debt securities 7,140 1,145 State and municipal obligations – – Other debt obligations 55 – Equity securities 12,573 16,338 Total $173,868 $19,728 As of December 2016 Money market instruments $ 317 $ – U.S. government and agency obligations 47,207 115 Non-U.S. 56,156 1,846 Securities backed by commercial real estate 208 – Securities backed by residential real estate 122 – Corporate debt securities 8,297 39 State and municipal obligations 831 – Other debt obligations 286 – Equity securities 15,028 10,495 Total $128,452 $12,495 The table below presents the gross carrying value of repurchase agreements and securities loaned by maturity date. As of December 2017 $ in millions Repurchase Securities No stated maturity and overnight $ 65,280 $ 9,389 2 - 30 days 59,344 4,967 31 - 90 days 13,489 756 91 days - 1 year 21,392 2,302 Greater than 1 year 14,363 2,314 Total $173,868 $19,728 In the table above: • Repurchase agreements and securities loaned that are repayable prior to maturity at the option of the firm are reflected at their contractual maturity dates. • Repurchase agreements and securities loaned that are redeemable prior to maturity at the option of the holder are reflected at the earliest dates such options become exercisable. Other Secured Financings In addition to repurchase agreements and securities loaned transactions, the firm funds certain assets through the use of other secured financings and pledges financial instruments and other assets as collateral in these transactions. These other secured financings consist of: • Liabilities of consolidated VIEs; • Transfers of assets accounted for as financings rather than sales (primarily collateralized central bank financings, pledged commodities, bank loans and mortgage whole loans); and • Other structured financing arrangements. Other secured financings includes arrangements that are nonrecourse. As of December 2017 and December 2016, nonrecourse other secured financings were $5.31 billion and $2.54 billion, respectively. The firm has elected to apply the fair value option to substantially all other secured financings because the use of fair value eliminates non-economic Other secured financings that are not recorded at fair value are recorded based on the amount of cash received plus accrued interest, which generally approximates fair value. While these financings are carried at amounts that approximate fair value, they are not accounted for at fair value under the fair value option or at fair value in accordance with other U.S. GAAP and therefore are not included in the firm’s fair value hierarchy in Notes 6 through 8. Had these financings been included in the firm’s fair value hierarchy, they would have been primarily classified in level 2 as of both December 2017 and December 2016. The table below presents information about other secured financings. $ in millions U.S. Dollar Non-U.S. Dollar Total As of December 2017 Other secured financings (short-term): At fair value $ 7,704 $ 6,856 $14,560 At amortized cost $ – $ 336 $ 336 Weighted average interest rates –% 2.61% Other secured financings (long-term): At fair value $ 6,779 $ 3,006 $ 9,785 At amortized cost $ 107 $ – $ 107 Weighted average interest rates 3.89% –% Total $14,590 $10,198 $24,788 Other secured financings collateralized by: Financial instruments $12,454 $ 9,870 $22,324 Other assets $ 2,136 $ 328 $ 2,464 As of December 2016 Other secured financings (short-term): At fair value $ 9,380 $ 3,738 $13,118 At amortized cost $ – $ – $ – Weighted average interest rates –% –% Other secured financings (long-term): At fair value $ 5,562 $ 2,393 $ 7,955 At amortized cost $ 145 $ 305 $ 450 Weighted average interest rates 4.06% 2.16% Total $15,087 $ 6,436 $21,523 Other secured financings collateralized by: Financial instruments $13,858 $ 5,974 $19,832 Other assets $ 1,229 $ 462 $ 1,691 In the table above: • Short-term other secured financings includes financings maturing within one year of the financial statement date and financings that are redeemable within one year of the financial statement date at the option of the holder. • Weighted average interest rates excludes other secured financings at fair value and includes the effect of hedging activities. See Note 7 for further information about hedging activities. • Total other secured financings included $1.55 billion and $285 million related to transfers of financial assets accounted for as financings rather than sales as of December 2017 and December 2016, respectively. Such financings were collateralized by financial assets of $1.57 billion and $285 million as of December 2017 and December 2016, respectively, primarily included in financial instruments owned. • Other secured financings collateralized by financial instruments included $16.61 billion and $13.65 billion of other secured financings collateralized by financial instruments owned as of December 2017 and December 2016, respectively, and $5.71 billion and $6.18 billion of other secured financings collateralized by financial instruments received as collateral and repledged as of December 2017 and December 2016, respectively. The table below presents other secured financings by maturity date. $ in millions As of December 2017 Other secured financings (short-term) $14,896 Other secured financings (long-term): 2019 3,439 2020 1,555 2021 551 2022 2,468 2023 - thereafter 1,879 Total other secured financings (long-term) 9,892 Total other secured financings $24,788 In the table above: • Long-term other secured financings that are repayable prior to maturity at the option of the firm are reflected at their contractual maturity dates. • Long-term other secured financings that are redeemable prior to maturity at the option of the holder are reflected at the earliest dates such options become exercisable. Collateral Received and Pledged The firm receives cash and securities (e.g., U.S. government and agency obligations, other sovereign and corporate obligations, as well as equity securities) as collateral, primarily in connection with resale agreements, securities borrowed, derivative transactions and customer margin loans. The firm obtains cash and securities as collateral on an upfront or contingent basis for derivative instruments and collateralized agreements to reduce its credit exposure to individual counterparties. In many cases, the firm is permitted to deliver or repledge financial instruments received as collateral when entering into repurchase agreements and securities loaned transactions, primarily in connection with secured client financing activities. The firm is also permitted to deliver or repledge these financial instruments in connection with other secured financings, collateralized derivative transactions and firm or customer settlement requirements. The firm also pledges certain financial instruments owned in connection with repurchase agreements, securities loaned transactions and other secured financings, and other assets (substantially all real estate and cash) in connection with other secured financings to counterparties who may or may not have the right to deliver or repledge them. The table below presents financial instruments at fair value received as collateral that were available to be delivered or repledged and were delivered or repledged by the firm. As of December $ in millions 2017 2016 Collateral available to be delivered or repledged $763,984 $634,609 Collateral that was delivered or repledged $599,565 $495,717 In the table above, as of December 2017 and December 2016, collateral available to be delivered or repledged excludes $1.52 billion and $15.47 billion, respectively, of securities received under resale agreements and securities borrowed transactions that contractually had the right to be delivered or repledged, but were segregated for regulatory and other purposes. The table below presents information about assets pledged. As of December $ in millions 2017 2016 Financial instruments owned pledged to counterparties that: Had the right to deliver or repledge $ 50,335 $ 51,278 Did not have the right to deliver or repledge $ 78,656 $ 61,099 Other assets pledged to counterparties that did not have the right to deliver or repledge $ 4,838 $ 3,287 The firm also segregated $10.42 billion and $15.29 billion of securities included in financial instruments owned as of December 2017 and December 2016, respectively, for regulatory and other purposes. See Note 3 for information about segregated cash.

Securitization Activities

Securitization Activities	12 Months Ended
	Dec. 31, 2017
Transfers and Servicing [Abstract]
Securitization Activities	Note 11. Securitization Activities The firm securitizes residential and commercial mortgages, corporate bonds, loans and other types of financial assets by selling these assets to securitization vehicles (e.g., trusts, corporate entities and limited liability companies) or through a resecuritization. The firm acts as underwriter of the beneficial interests that are sold to investors. The firm’s residential mortgage securitizations are primarily in connection with government agency securitizations. Beneficial interests issued by securitization entities are debt or equity instruments that give the investors rights to receive all or portions of specified cash inflows to a securitization vehicle and include senior and subordinated interests in principal, interest and/or other cash inflows. The proceeds from the sale of beneficial interests are used to pay the transferor for the financial assets sold to the securitization vehicle or to purchase securities which serve as collateral. The firm accounts for a securitization as a sale when it has relinquished control over the transferred financial assets. Prior to securitization, the firm generally accounts for assets pending transfer at fair value and therefore does not typically recognize significant gains or losses upon the transfer of assets. Net revenues from underwriting activities are recognized in connection with the sales of the underlying beneficial interests to investors. For transfers of financial assets that are not accounted for as sales, the assets remain in financial instruments owned and the transfer is accounted for as a collateralized financing, with the related interest expense recognized over the life of the transaction. See Notes 10 and 23 for further information about collateralized financings and interest expense, respectively. The firm generally receives cash in exchange for the transferred assets but may also have continuing involvement with the transferred financial assets, including ownership of beneficial interests in securitized financial assets, primarily in the form of debt instruments. The firm may also purchase senior or subordinated securities issued by securitization vehicles (which are typically VIEs) in connection with secondary market-making activities. The primary risks included in beneficial interests and other interests from the firm’s continuing involvement with securitization vehicles are the performance of the underlying collateral, the position of the firm’s investment in the capital structure of the securitization vehicle and the market yield for the security. These interests primarily are accounted for at fair value and classified in level 2 of the fair value hierarchy. Beneficial interests and other interests not accounted for at fair value are carried at amounts that approximate fair value. See Notes 5 through 8 for further information about fair value measurements. The table below presents the amount of financial assets securitized and the cash flows received on retained interests in securitization entities in which the firm had continuing involvement as of the end of the period. Year Ended December $ in millions 2017 2016 2015 Residential mortgages $18,142 $12,164 $10,479 Commercial mortgages 7,872 233 6,043 Other financial assets 481 181 – Total $26,495 $12,578 $16,522 Retained interests cash flows $ 264 $ 189 $ 174 The table below presents the firm’s continuing involvement in nonconsolidated securitization entities to which the firm sold assets, as well as the total outstanding principal amount of transferred assets in which the firm has continuing involvement. $ in millions Outstanding Principal Amount Retained Interests Purchased Interests As of December 2017 U.S. government agency-issued collateralized mortgage obligations $20,232 $1,120 $16 Other residential mortgage-backed 10,558 711 17 Other commercial mortgage-backed 7,916 228 7 Corporate debt and other asset-backed 2,108 56 1 Total $40,814 $2,115 $41 As of December 2016 U.S. government agency-issued collateralized mortgage obligations $25,140 $ 953 $24 Other residential mortgage-backed 3,261 540 6 Other commercial mortgage-backed 357 15 – Corporate debt and other asset-backed 2,284 56 6 Total $31,042 $1,564 $36 In the table above: • The outstanding principal amount is presented for the purpose of providing information about the size of the securitization entities and is not representative of the firm’s risk of loss. • The firm’s risk of loss from retained or purchased interests is limited to the carrying value of these interests. • Purchased interests represent senior and subordinated interests, purchased in connection with secondary market-making activities, in securitization entities in which the firm also holds retained interests. • Substantially all of the total outstanding principal amount and total retained interests relate to securitizations during 2012 and thereafter. • The fair value of retained interests was $2.13 billion and $1.58 billion as of December 2017 and December 2016, respectively. In addition to the interests in the table above, the firm had other continuing involvement in the form of derivative transactions and commitments with certain nonconsolidated VIEs. The carrying value of these derivatives and commitments was a net asset of $86 million and $48 million as of December 2017 and December 2016, respectively. The notional amounts of these derivatives and commitments are included in maximum exposure to loss in the nonconsolidated VIE table in Note 12. The table below presents the weighted average key economic assumptions used in measuring the fair value of mortgage-backed retained interests and the sensitivity of this fair value to immediate adverse changes of 10% and 20% in those assumptions. As of December $ in millions 2017 2016 Fair value of retained interests $2,071 $1,519 Weighted average life (years) 6.0 7.5 Constant prepayment rate 9.4% 8.1% Impact of 10% adverse change $ (19 ) $ (14 ) Impact of 20% adverse change $ (35 ) $ (28 ) Discount rate 4.2% 5.3% Impact of 10% adverse change $ (35 ) $ (37 ) Impact of 20% adverse change $ (70 ) $ (71 ) In the table above: • Amounts do not reflect the benefit of other financial instruments that are held to mitigate risks inherent in these retained interests. • Changes in fair value based on an adverse variation in assumptions generally cannot be extrapolated because the relationship of the change in assumptions to the change in fair value is not usually linear. • The impact of a change in a particular assumption is calculated independently of changes in any other assumption. In practice, simultaneous changes in assumptions might magnify or counteract the sensitivities disclosed above. • The constant prepayment rate is included only for positions for which it is a key assumption in the determination of fair value. • The discount rate for retained interests that relate to U.S. government agency-issued collateralized mortgage obligations does not include any credit loss. Expected credit loss assumptions are reflected in the discount rate for the remainder of retained interests. The firm has other retained interests not reflected in the table above with a fair value of $56 million and a weighted average life of 4.5 years as of December 2017, and a fair value of $56 million and a weighted average life of 3.5 years as of December 2016. Due to the nature and fair value of certain of these retained interests, the weighted average assumptions for constant prepayment and discount rates and the related sensitivity to adverse changes are not meaningful as of both December 2017 and December 2016. The firm’s maximum exposure to adverse changes in the value of these interests is the carrying value of $56 million and $56 million as of December 2017 and December 2016, respectively.

Variable Interest Entities

Variable Interest Entities	12 Months Ended
	Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Variable Interest Entities	Note 12. Variable Interest Entities A variable interest in a VIE is an investment (e.g., debt or equity securities) or other interest (e.g., derivatives or loans and lending commitments) that will absorb portions of the VIE’s expected losses and/or receive portions of the VIE’s expected residual returns. The firm’s variable interests in VIEs include senior and subordinated debt; loans and lending commitments; limited and general partnership interests; preferred and common equity; derivatives that may include foreign currency, equity and/or credit risk; guarantees; and certain of the fees the firm receives from investment funds. Certain interest rate, foreign currency and credit derivatives the firm enters into with VIEs are not variable interests because they create, rather than absorb, risk. VIEs generally finance the purchase of assets by issuing debt and equity securities that are either collateralized by or indexed to the assets held by the VIE. The debt and equity securities issued by a VIE may include tranches of varying levels of subordination. The firm’s involvement with VIEs includes securitization of financial assets, as described in Note 11, and investments in and loans to other types of VIEs, as described below. See Note 11 for further information about securitization activities, including the definition of beneficial interests. See Note 3 for the firm’s consolidation policies, including the definition of a VIE. VIE Consolidation Analysis The enterprise with a controlling financial interest in a VIE is known as the primary beneficiary and consolidates the VIE. The firm determines whether it is the primary beneficiary of a VIE by performing an analysis that principally considers: • Which variable interest holder has the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance; • Which variable interest holder has the obligation to absorb losses or the right to receive benefits from the VIE that could potentially be significant to the VIE; • The VIE’s purpose and design, including the risks the VIE was designed to create and pass through to its variable interest holders; • The VIE’s capital structure; • The terms between the VIE and its variable interest holders and other parties involved with the VIE; and • Related-party relationships. The firm reassesses its evaluation of whether an entity is a VIE when certain reconsideration events occur. The firm reassesses its determination of whether it is the primary beneficiary of a VIE on an ongoing basis based on current facts and circumstances. VIE Activities In 2017, the firm aggregated corporate debt VIEs with other asset-backed VIEs and aggregated power-related VIEs with real estate, credit-related and other investing VIEs (rather than in investments in funds and other VIEs). Previously reported amounts have been conformed to the current presentation. The firm is principally involved with VIEs through the following business activities: Mortgage-Backed VIEs. The firm sells residential and commercial mortgage loans and securities to mortgage-backed VIEs and may retain beneficial interests in the assets sold to these VIEs. The firm purchases and sells beneficial interests issued by mortgage-backed VIEs in connection with market-making activities. In addition, the firm may enter into derivatives with certain of these VIEs, primarily interest rate swaps, which are typically not variable interests. The firm generally enters into derivatives with other counterparties to mitigate its risk. Real Estate, Credit- and Power-Related and Other Investing VIEs. The firm purchases equity and debt securities issued by and makes loans to VIEs that hold real estate, performing and nonperforming debt, distressed loans, power-related assets and equity securities. The firm typically does not sell assets to, or enter into derivatives with, these VIEs. Corporate Debt and Other Asset-Backed VIEs. The firm structures VIEs that issue notes to clients, and purchases and sells beneficial interests issued by corporate debt and other asset-backed VIEs in connection with market-making activities. Certain of these VIEs synthetically create the exposure for the beneficial interests they issue by entering into credit derivatives with the firm, rather than purchasing the underlying assets. In addition, the firm may enter into derivatives, such as total return swaps, with certain corporate debt and other asset-backed VIEs, under which the firm pays the VIE a return due to the beneficial interest holders and receives the return on the collateral owned by the VIE. The collateral owned by these VIEs is primarily other asset-backed loans and securities. The firm generally can be removed as the total return swap counterparty and enters into derivatives with other counterparties to mitigate its risk related to these swaps. The firm may sell assets to the corporate debt and other asset-backed VIEs it structures. Principal-Protected Note VIEs. The firm structures VIEs that issue principal-protected notes to clients. These VIEs own portfolios of assets, principally with exposure to hedge funds. Substantially all of the principal protection on the notes issued by these VIEs is provided by the asset portfolio rebalancing that is required under the terms of the notes. The firm enters into total return swaps with these VIEs under which the firm pays the VIE the return due to the principal-protected note holders and receives the return on the assets owned by the VIE. The firm may enter into derivatives with other counterparties to mitigate its risk. The firm also obtains funding through these VIEs. Investments in Funds. The firm makes equity investments in certain of the investment fund VIEs it manages and is entitled to receive fees from these VIEs. The firm typically does not sell assets to, or enter into derivatives with, these VIEs. Adoption of ASU No. 2015-02 The firm adopted ASU No. 2015-02 No. 2015-02. Nonconsolidated VIEs. As a result of adoption as of January 1, 2016, investments in funds nonconsolidated VIEs included $10.70 billion in assets in VIEs, $543 million in carrying value of variable interests — assets and $559 million in maximum exposure to loss related to investments in limited partnership entities that were previously classified as nonconsolidated voting interest entities. Consolidated VIEs. As a result of adoption as of January 1, 2016, real estate, credit-related and other investing consolidated VIEs included $302 million of assets, substantially all included in financial instruments owned, and $122 million of liabilities, included in other liabilities and accrued expenses, primarily related to investments in limited partnership entities that were previously classified as consolidated voting interest entities. Nonconsolidated VIEs The table below presents a summary of the nonconsolidated VIEs in which the firm holds variable interests. The nature of the firm’s variable interests can take different forms, as described in the rows under maximum exposure to loss. As of December $ in millions 2017 2016 Total nonconsolidated VIEs Assets in VIEs $97,962 $70,083 Carrying value of variable interests — assets 8,425 6,199 Carrying value of variable interests — liabilities 214 254 Maximum exposure to loss: Retained interests 2,115 1,564 Purchased interests 1,172 544 Commitments and guarantees 3,462 2,196 Derivatives 8,406 7,144 Loans and investments 4,454 3,760 Total maximum exposure to loss $19,609 $15,208 In the table above: • The firm’s exposure to the obligations of VIEs is generally limited to its interests in these entities. In certain instances, the firm provides guarantees, including derivative guarantees, to VIEs or holders of variable interests in VIEs. • The maximum exposure to loss excludes the benefit of offsetting financial instruments that are held to mitigate the risks associated with these variable interests. • The maximum exposure to loss from retained interests, purchased interests, and loans and investments is the carrying value of these interests. • The maximum exposure to loss from commitments and guarantees, and derivatives is the notional amount, which does not represent anticipated losses and also has not been reduced by unrealized losses already recorded. As a result, the maximum exposure to loss exceeds liabilities recorded for commitments and guarantees, and derivatives provided to VIEs. • Total maximum exposure to loss from commitments and guarantees, and derivatives included $1.26 billion and $1.28 billion as of December 2017 and December 2016, respectively, related to transactions with VIEs to which the firm transferred assets. The table below disaggregates, by principal business activity, the information for nonconsolidated VIEs included in the summary table above. As of December $ in millions 2017 2016 Mortgage-backed Assets in VIEs $55,153 $32,714 Carrying value of variable interests — assets 3,128 1,936 Maximum exposure to loss: Retained interests 2,059 1,508 Purchased interests 1,067 429 Commitments and guarantees 11 9 Derivatives 99 163 Total maximum exposure to loss $ 3,236 $ 2,109 Real estate, credit- and power-related and other investing Assets in VIEs $15,539 $11,771 Carrying value of variable interests — assets 3,289 2,911 Carrying value of variable interests — liabilities 2 9 Maximum exposure to loss: Commitments and guarantees 1,617 1,658 Loans and investments 3,289 2,911 Total maximum exposure to loss $ 4,906 $ 4,569 Corporate debt and other asset-backed Assets in VIEs $16,251 $11,540 Carrying value of variable interests — assets 1,660 602 Carrying value of variable interests — liabilities 212 245 Maximum exposure to loss: Retained interests 56 56 Purchased interests 105 115 Commitments and guarantees 1,779 461 Derivatives 8,303 6,975 Loans and investments 817 99 Total maximum exposure to loss $11,060 $ 7,706 Investments in funds Assets in VIEs $11,019 $14,058 Carrying value of variable interests — assets 348 750 Maximum exposure to loss: Commitments and guarantees 55 68 Derivatives 4 6 Loans and investments 348 750 Total maximum exposure to loss $ 407 $ 824 As of both December 2017 and December 2016, the carrying values of the firm’s variable interests in nonconsolidated VIEs are included in the consolidated statements of financial condition as follows: • Mortgage-backed: Assets were primarily included in financial instruments owned. • Real estate, credit- and power-related and other investing: Assets were primarily included in financial instruments owned and liabilities were included in financial instruments sold, but not yet purchased and other liabilities and accrued expenses. • Corporate debt and other asset-backed: Substantially all assets were included in financial instruments owned and liabilities were included in financial instruments sold, but not yet purchased. • Investments in funds: Assets were included in financial instruments owned. Consolidated VIEs The table below presents a summary of the carrying value and classification of assets and liabilities in consolidated VIEs. As of December $ in millions 2017 2016 Total consolidated VIEs Assets Cash and cash equivalents $ 275 $ 300 Receivables from customers and counterparties 2 – Loans receivable 427 603 Financial instruments owned 1,194 2,047 Other assets 1,273 682 Total $3,171 $3,632 Liabilities Other secured financings $1,023 $ 854 Payables to brokers, dealers and clearing organizations – 1 Financial instruments sold, but not yet purchased 15 7 Unsecured short-term borrowings 79 197 Unsecured long-term borrowings 225 334 Other liabilities and accrued expenses 577 803 Total $1,919 $2,196 In the table above: • Assets and liabilities are presented net of intercompany eliminations and exclude the benefit of offsetting financial instruments that are held to mitigate the risks associated with the firm’s variable interests. • VIEs in which the firm holds a majority voting interest are excluded if (i) the VIE meets the definition of a business and (ii) the VIE’s assets can be used for purposes other than the settlement of its obligations. • Substantially all assets can only be used to settle obligations of the VIE. The table below disaggregates, by principal business activity, the information for consolidated VIEs included in the summary table above. As of December $ in millions 2017 2016 Real estate, credit-related and other investing Assets Cash and cash equivalents $ 275 $ 300 Loans receivable 375 603 Financial instruments owned 896 1,708 Other assets 1,267 680 Total $2,813 $3,291 Liabilities Other secured financings $ 327 $ 284 Payables to brokers, dealers and clearing organizations – 1 Financial instruments sold, but not yet purchased 15 7 Other liabilities and accrued expenses 577 803 Total $ 919 $1,095 Mortgage-backed and other asset-backed Assets Receivables from customers and counterparties $ 2 $ – Loans receivable 52 – Financial instruments owned 242 253 Other assets 6 2 Total $ 302 $ 255 Liabilities Other secured financings $ 207 $ 139 Total $ 207 $ 139 Principal-protected notes Assets Financial instruments owned $ 56 $ 86 Total $ 56 $ 86 Liabilities Other secured financings $ 489 $ 431 Unsecured short-term borrowings 79 197 Unsecured long-term borrowings 225 334 Total $ 793 $ 962 In the table above: • The majority of the assets in principal-protected notes VIEs are intercompany and are eliminated in consolidation. • Creditors and beneficial interest holders of real estate, credit-related and other investing VIEs, and mortgage-backed and other asset-backed VIEs do not have recourse to the general credit of the firm.

Other Assets

Other Assets	12 Months Ended
	Dec. 31, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Other Assets	Note 13. Other Assets Other assets are generally less liquid, nonfinancial assets. The table below presents other assets by type. As of December $ in millions 2017 2016 Property, leasehold improvements and equipment $15,094 $12,070 Goodwill and identifiable intangible assets 4,038 4,095 Income tax-related 3,728 5,550 Miscellaneous receivables and other 5,486 3,766 Total $28,346 $25,481 In the table above: • Property, leasehold improvements and equipment is net of accumulated depreciation and amortization of $8.28 billion and $7.68 billion as of December 2017 and December 2016, respectively. Property, leasehold improvements and equipment included $5.97 billion and $5.96 billion as of December 2017 and December 2016, respectively, related to property, leasehold improvements and equipment that the firm uses in connection with its operations. The remainder is held by investment entities, including VIEs, consolidated by the firm. Substantially all property and equipment is depreciated on a straight-line basis over the useful life of the asset. Leasehold improvements are amortized on a straight-line basis over the useful life of the improvement or the term of the lease, whichever is shorter. Capitalized costs of software developed or obtained for internal use are amortized on a straight-line basis over three years. • The decrease in income tax-related tax-related • Miscellaneous receivables and other included debt securities accounted for as held-to-maturity • Miscellaneous receivables and other included investments in qualified affordable housing projects of $679 million and $682 million as of December 2017 and December 2016, respectively. • Miscellaneous receivables and other included equity-method investments of $275 million and $219 million as of December 2017 and December 2016, respectively. • Miscellaneous receivables and other included assets classified as held for sale of $634 million as of December 2017 related to certain of the firm’s consolidated investments within its Investing & Lending segment, substantially all of which consisted of property and equipment. Goodwill and Identifiable Intangible Assets Goodwill. The table below presents the carrying value of goodwill. As of December $ in millions 2017 2016 Investment Banking: Financial Advisory $ 98 $ 98 Underwriting 183 183 Institutional Client Services: FICC Client Execution 269 269 Equities client execution 2,403 2,403 Securities services 105 105 Investing & Lending 2 2 Investment Management 605 606 Total $3,665 $3,666 Goodwill is the cost of acquired companies in excess of the fair value of net assets, including identifiable intangible assets, at the acquisition date. Goodwill is assessed for impairment annually in the fourth quarter or more frequently if events occur or circumstances change that indicate an impairment may exist. When assessing goodwill for impairment, first, qualitative factors are assessed to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. If the results of the qualitative assessment are not conclusive, a quantitative goodwill test is performed. The quantitative goodwill test compares the estimated fair value of each reporting unit with its estimated net book value (including goodwill and identifiable intangible assets). If the reporting unit’s estimated fair value exceeds its estimated net book value, goodwill is not impaired. An impairment is recognized if the estimated fair value of a reporting unit is less than its estimated net book value, with the amount of impairment equal to the difference between those values. To estimate the fair value of each reporting unit, a relative value technique is used because the firm believes market participants would use this technique to value the firm’s reporting units. The relative value technique applies observable price-to-earnings price-to-book In the fourth quarter of 2017, the firm assessed goodwill for impairment for each of its reporting units by performing a qualitative assessment. Multiple factors were assessed with respect to each of the firm’s reporting units to determine whether it was more likely than not that the estimated fair value of any of these reporting units was less than its estimated carrying value. The qualitative assessment also considered changes since the prior quantitative tests. The firm considered the following factors in the qualitative assessment performed in the fourth quarter when evaluating whether it was more likely than not that the fair value of a reporting unit was less than its carrying value: • Performance Indicators. pre-tax • Firm and Industry Events. • Macroeconomic Indicators. • Fair Value Indicators. price-to-book price-to-earnings As a result of the qualitative assessment, the firm determined that it was more likely than not that the estimated fair value of each of the reporting units exceeded its respective carrying value. Therefore, the firm determined that goodwill for each reporting unit was not impaired and that a quantitative goodwill test was not required. Identifiable Intangible Assets. The table below presents the carrying value of identifiable intangible assets. As of December $ in millions 2017 2016 Institutional Client Services: FICC Client Execution $ 37 $ 65 Equities client execution 88 141 Investing & Lending 140 105 Investment Management 108 118 Total $ 373 $ 429 The table below presents further details on the net carrying value of identifiable intangible assets. As of December $ in millions 2017 2016 Customer lists Gross carrying value $ 1,091 $ 1,065 Accumulated amortization (903 ) (837 ) Net carrying value 188 228 Other Gross carrying value 584 543 Accumulated amortization (399 ) (342 ) Net carrying value 185 201 Total gross carrying value 1,675 1,608 Total accumulated amortization (1,302 ) (1,179 ) Total net carrying value $ 373 $ 429 In the table above: • The net carrying value of other intangibles primarily includes intangible assets related to acquired leases and commodities transportation rights. • During 2017 and 2016, the firm acquired $113 million and $89 million, respectively, of intangible assets, primarily related to acquired leases, with a weighted average amortization period of five and three years, respectively. Substantially all of the firm’s identifiable intangible assets are considered to have finite useful lives and are amortized over their estimated useful lives generally using the straight-line method. The tables below present details about amortization of identifiable intangible assets. Year Ended December $ in millions 2017 2016 2015 Amortization $150 $162 $132 $ in millions As of Estimated future amortization 2018 $133 2019 $ 98 2020 $ 39 2021 $ 27 2022 $ 20 Impairments The firm tests property, leasehold improvements and equipment, identifiable intangible assets and other assets for impairment whenever events or changes in circumstances suggest that an asset’s or asset group’s carrying value may not be fully recoverable. To the extent the carrying value of an asset exceeds the projected undiscounted cash flows expected to result from the use and eventual disposal of the asset or asset group, the firm determines the asset is impaired and records an impairment equal to the difference between the estimated fair value and the carrying value of the asset or asset group. In addition, the firm will recognize an impairment prior to the sale of an asset if the carrying value of the asset exceeds its estimated fair value. During 2017, 2016 and 2015, impairments were not material to the firm’s results of operations or financial condition.

Deposits

Deposits	12 Months Ended
	Dec. 31, 2017
Banking and Thrift [Abstract]
Deposits	Note 14. Deposits The table below presents the types and sources of the firm’s deposits. $ in millions Savings and Time Total As of December 2017 Private bank deposits $50,579 $ 1,623 $ 52,202 Marcus deposits 13,787 3,330 17,117 Brokered certificates of deposit – 35,704 35,704 Deposit sweep programs 16,019 – 16,019 Institutional deposits 1 17,561 17,562 Total $80,386 $58,218 $138,604 As of December 2016 Private bank deposits $50,655 $ 3,100 $ 53,755 Marcus deposits 10,511 1,337 11,848 Brokered certificates of deposit – 34,905 34,905 Deposit sweep programs 16,019 – 16,019 Institutional deposits 12 7,559 7,571 Total $77,197 $46,901 $124,098 In the table above: • Substantially all deposits are interest-bearing. • Savings and demand deposits have no stated maturity. • Time deposits included $22.90 billion and $13.78 billion as of December 2017 and December 2016, respectively, of deposits accounted for at fair value under the fair value option. See Note 8 for further information about deposits accounted for at fair value. • Time deposits had a weighted average maturity of approximately 2 years and 2.5 years as of December 2017 and December 2016, respectively. • Deposit sweep programs represent long-term contractual agreements with several U.S. broker-dealers who sweep client cash to FDIC-insured deposits. • Deposits insured by the FDIC as of December 2017 and December 2016 were approximately $75.02 billion and $69.91 billion, respectively. The table below presents deposits held in U.S. and non-U.S. As of December $ in millions 2017 2016 U.S. offices $111,002 $106,037 Non-U.S. 27,602 18,061 Total $138,604 $124,098 In the table above, U.S. deposits were held at Goldman Sachs Bank USA (GS Bank USA) and substantially all non-U.S. The table below presents maturities of time deposits held in U.S. and non-U.S. As of December 2017 $ in millions U.S. Non-U.S. Total 2018 $13,106 $15,037 $28,143 2019 7,297 3,179 10,476 2020 5,142 12 5,154 2021 3,574 43 3,617 2022 4,907 86 4,993 2023 - thereafter 5,289 546 5,835 Total $39,315 $18,903 $58,218 As of December 2017, deposits in U.S. and non-U.S. The firm’s savings and demand deposits are recorded based on the amount of cash received plus accrued interest, which approximates fair value. In addition, the firm designates certain derivatives as fair value hedges to convert a portion of its time deposits not accounted for at fair value from fixed-rate obligations into floating-rate obligations. The carrying value of time deposits not accounted for at fair value approximated fair value as of both December 2017 and December 2016. While these savings and demand deposits and time deposits are carried at amounts that approximate fair value, they are not accounted for at fair value under the fair value option or at fair value in accordance with other U.S. GAAP and therefore are not included in the firm’s fair value hierarchy in Notes 6 through 8. Had these deposits been included in the firm’s fair value hierarchy, they would have been classified in level 2 as of both December 2017 and December 2016.

Short-Term Borrowings

Short-Term Borrowings	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Short-Term Borrowings	Note 15. Short-Term Borrowings The table below presents details about the firm’s short-term borrowings. As of December $ in millions 2017 2016 Other secured financings (short-term) $14,896 $13,118 Unsecured short-term borrowings 46,922 39,265 Total $61,818 $52,383 See Note 10 for information about other secured financings. Unsecured short-term borrowings includes the portion of unsecured long-term borrowings maturing within one year of the financial statement date and unsecured long-term borrowings that are redeemable within one year of the financial statement date at the option of the holder. The firm accounts for certain hybrid financial instruments at fair value under the fair value option. See Note 8 for further information about unsecured short-term borrowings that are accounted for at fair value. The carrying value of unsecured short-term borrowings that are not recorded at fair value generally approximates fair value due to the short-term nature of the obligations. While these unsecured short-term borrowings are carried at amounts that approximate fair value, they are not accounted for at fair value under the fair value option or at fair value in accordance with other U.S. GAAP and therefore are not included in the firm’s fair value hierarchy in Notes 6 through 8. Had these borrowings been included in the firm’s fair value hierarchy, substantially all would have been classified in level 2 as of both December 2017 and December 2016. The table below presents details about the firm’s unsecured short-term borrowings. As of December $ in millions 2017 2016 Current portion of unsecured long-term borrowings $30,090 $23,528 Hybrid financial instruments 12,973 11,700 Other unsecured short-term borrowings 3,859 4,037 Total $46,922 $39,265 Weighted average interest rate 2.28% 1.68% In the table above: • The current portion of unsecured long-term borrowings included $26.28 billion and $21.53 billion as of December 2017 and December 2016, respectively, issued by Group Inc. • The weighted average interest rates for these borrowings include the effect of hedging activities and exclude unsecured short-term borrowings accounted for at fair value under the fair value option. See Note 7 for further information about hedging activities.

Long-Term Borrowings

Long-Term Borrowings	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Long-Term Borrowings	Note 16. Long-Term Borrowings The table below presents details about the firm’s long-term borrowings. As of December $ in millions 2017 2016 Other secured financings (long-term) $ 9,892 $ 8,405 Unsecured long-term borrowings 217,687 189,086 Total $227,579 $197,491 See Note 10 for information about other secured financings. The table below presents unsecured long-term borrowings extending through 2057, which consists principally of senior borrowings. $ in millions U.S. Dollar Non-U.S. Total As of December 2017 Fixed-rate obligations: Group Inc. $101,791 $ 35,116 $136,907 Subsidiaries 2,244 1,859 4,103 Floating-rate obligations: Group Inc. 29,637 23,938 53,575 Subsidiaries 14,977 8,125 23,102 Total $148,649 $ 69,038 $217,687 As of December 2016 Fixed-rate obligations: Group Inc. $ 93,885 $ 31,274 $125,159 Subsidiaries 2,228 885 3,113 Floating-rate obligations: Group Inc. 27,864 19,112 46,976 Subsidiaries 8,884 4,954 13,838 Total $132,861 $ 56,225 $189,086 In the table above: • Floating interest rates are generally based on LIBOR or Overnight Index Swap Rate. Equity-linked and indexed instruments are included in floating-rate obligations. • Interest rates on U.S. dollar-denominated debt ranged from 1.60% to 10.04% (with a weighted average rate of 4.24%) and 1.60% to 10.04% (with a weighted average rate of 4.57%) as of December 2017 and December 2016, respectively. • Interest rates on non-U.S. The table below presents unsecured long-term borrowings by maturity date. As of December 2017 $ in millions Group Inc. Subsidiaries Total 2019 $ 24,915 $ 5,590 $ 30,505 2020 20,215 2,905 23,120 2021 20,547 1,234 21,781 2022 21,044 1,558 22,602 2023 - thereafter 103,761 15,918 119,679 Total $190,482 $27,205 $217,687 In the table above: • Unsecured long-term borrowings maturing within one year of the financial statement date and unsecured long-term borrowings that are redeemable within one year of the financial statement date at the option of the holder are excluded as they are included in unsecured short-term borrowings. • Unsecured long-term borrowings that are repayable prior to maturity at the option of the firm are reflected at their contractual maturity dates. • Unsecured long-term borrowings that are redeemable prior to maturity at the option of the holder are reflected at the earliest dates such options become exercisable. • Unsecured long-term borrowings included $5.61 billion of adjustments to the carrying value of certain unsecured long-term borrowings resulting from the application of hedge accounting by year of maturity as follows: $167 million in 2019, $192 million in 2020, $387 million in 2021, $(82) million in 2022, and $4.95 billion in 2023 and thereafter. The firm designates certain derivatives as fair value hedges to convert a portion of its fixed-rate unsecured long-term borrowings not accounted for at fair value into floating-rate obligations. See Note 7 for further information about hedging activities. The table below presents unsecured long-term borrowings, after giving effect to such hedging activities. $ in millions Group Inc. Subsidiaries Total As of December 2017 Fixed-rate obligations: At fair value $ – $ 147 $ 147 At amortized cost 86,951 3,852 90,803 Floating-rate obligations: At fair value 18,207 20,284 38,491 At amortized cost 85,324 2,922 88,246 Total $190,482 $27,205 $217,687 As of December 2016 Fixed-rate obligations: At fair value $ – $ 150 $ 150 At amortized cost 71,225 3,493 74,718 Floating-rate obligations: At fair value 17,591 11,669 29,260 At amortized cost 83,319 1,639 84,958 Total $172,135 $16,951 $189,086 In the table above, the weighted average interest rates on the aggregate amounts were 2.86% (3.67% related to fixed-rate obligations and 2.02% related to floating-rate obligations) and 2.87% (3.90% related to fixed-rate obligations and 1.97% related to floating-rate obligations) as of December 2017 and December 2016, respectively. These rates exclude unsecured long-term borrowings accounted for at fair value under the fair value option. As of both December 2017 and December 2016, the carrying value of unsecured long-term borrowings for which the firm did not elect the fair value option approximated fair value. As these borrowings are not accounted for at fair value under the fair value option or at fair value in accordance with other U.S. GAAP, their fair value is not included in the firm’s fair value hierarchy in Notes 6 through 8. Had these borrowings been included in the firm’s fair value hierarchy, substantially all would have been classified in level 2 as of both December 2017 and December 2016. Subordinated Borrowings Unsecured long-term borrowings includes subordinated debt and junior subordinated debt. Junior subordinated debt is junior in right of payment to other subordinated borrowings, which are junior to senior borrowings. As of December 2017 and December 2016, subordinated debt had maturities ranging from 2020 to 2045, and 2018 to 2045, respectively. Subordinated debt that matures within one year is included in unsecured short-term borrowings. The table below presents details about the firm’s subordinated borrowings. $ in millions Par Carrying Rate As of December 2017 Subordinated debt $14,117 $16,235 3.31% Junior subordinated debt 1,168 1,539 2.37% Total $15,285 $17,774 3.24% As of December 2016 Subordinated debt $15,058 $17,604 4.29% Junior subordinated debt 1,360 1,809 5.70% Total $16,418 $19,413 4.41% In the table above: • Par amount and carrying amount of subordinated debt issued by Group Inc. were $13.96 billion and $16.08 billion, respectively, as of December 2017, and $14.84 billion and $17.39 billion, respectively, as of December 2016. • The rate is the weighted average interest rate for these borrowings, including the effect of fair value hedges used to convert fixed-rate obligations into floating-rate obligations. See Note 7 for further information about hedging activities. The rates exclude subordinated borrowings accounted for at fair value under the fair value option. During 2017, the firm repurchased or redeemed subordinated debt with a par amount of $1.45 billion (carrying value of $1.80 billion) for $1.70 billion. As a result, such debt was extinguished. Junior Subordinated Debt Junior Subordinated Debt Held by Trusts. In 2012, the Vesey Street Investment Trust I (Vesey Street Trust) and the Murray Street Investment Trust I (Murray Street Trust) issued an aggregate of $2.25 billion of senior guaranteed trust securities to third parties, the proceeds of which were used to purchase junior subordinated debt issued by Group Inc. from Goldman Sachs Capital II and Goldman Sachs Capital III (APEX Trusts). The APEX Trusts used the proceeds to purchase shares of Group Inc.’s Perpetual Non-Cumulative Non-Cumulative The APEX Trusts are Delaware statutory trusts sponsored by the firm and wholly-owned finance subsidiaries of the firm for regulatory and legal purposes but are not consolidated for accounting purposes. The firm has covenanted in favor of the holders of Group Inc.’s 6.345% junior subordinated debt due February 15, 2034, that, subject to certain exceptions, the firm will not redeem or purchase the capital securities issued by the APEX Trusts, shares of Group Inc.’s Series E or Series F Preferred Stock or shares of Group Inc.’s Series O Perpetual Non-Cumulative Junior Subordinated Debt Issued in Connection with Trust Preferred Securities. Group Inc. issued $2.84 billion of junior subordinated debt in 2004 to Goldman Sachs Capital I (Trust), a Delaware statutory trust. The Trust issued $2.75 billion of guaranteed preferred beneficial interests (Trust Preferred Securities) to third parties and $85 million of common beneficial interests to Group Inc. and used the proceeds from the issuances to purchase the junior subordinated debt from Group Inc. As of December 2017, the outstanding par amount of junior subordinated debt held by the Trust was $1.17 billion and the outstanding par amount of Trust Preferred Securities and common beneficial interests issued by the Trust was $1.13 billion and $35.1 million, respectively. During 2017, the firm purchased $186 million (par amount) of Trust Preferred Securities and delivered these securities, along with $5.7 million of common beneficial interests, to the Trust in exchange for a corresponding par amount of the junior subordinated debt. Following the exchanges, these Trust Preferred Securities, common beneficial interests and junior subordinated debt were extinguished. As of December 2016, the outstanding par amount of junior subordinated debt held by the Trust was $1.36 billion and the outstanding par amount of Trust Preferred Securities and common beneficial interests issued by the Trust was $1.32 billion and $40.8 million, respectively. The Trust is a wholly-owned finance subsidiary of the firm for regulatory and legal purposes but is not consolidated for accounting purposes. The firm pays interest semi-annually on the junior subordinated debt at an annual rate of 6.345% and the debt matures on February 15, 2034. The coupon rate and the payment dates applicable to the beneficial interests are the same as the interest rate and payment dates for the junior subordinated debt. The firm has the right, from time to time, to defer payment of interest on the junior subordinated debt, and therefore cause payment on the Trust’s preferred beneficial interests to be deferred, in each case up to ten consecutive semi-annual periods. During any such deferral period, the firm will not be permitted to, among other things, pay dividends on or make certain repurchases of its common stock. The Trust is not permitted to pay any distributions on the common beneficial interests held by Group Inc. unless all dividends payable on the preferred beneficial interests have been paid in full.

Other Liabilities and Accrued E

Other Liabilities and Accrued Expenses	12 Months Ended
	Dec. 31, 2017
Other Liabilities Disclosure [Abstract]
Other Liabilities and Accrued Expenses	Note 17. Other Liabilities and Accrued Expenses The table below presents other liabilities and accrued expenses by type. As of December $ in millions 2017 2016 Compensation and benefits $ 6,710 $ 7,181 Noncontrolling interests 553 506 Income tax-related 4,051 1,794 Employee interests in consolidated funds 156 77 Subordinated liabilities of consolidated VIEs 19 584 Accrued expenses and other 5,433 4,220 Total $16,922 $14,362 In the table above, the increase in income tax-related tax-related

Commitments, Contingencies and

Commitments, Contingencies and Guarantees	12 Months Ended
	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments, Contingencies and Guarantees	Note 18. Commitments, Contingencies and Guarantees Commitments The table below presents the firm’s commitments by type. As of December $ in millions 2017 2016 Commercial lending: Investment-grade $ 93,115 $ 73,664 Non-investment-grade 45,291 34,878 Warehouse financing 5,340 3,514 Total commitments to extend credit 143,746 112,056 Contingent and forward starting collateralized agreements 41,756 25,348 Forward starting collateralized financings 16,902 8,939 Letters of credit 437 373 Investment commitments 6,840 8,444 Other 6,310 6,014 Total commitments $215,991 $161,174 The table below presents the firm’s commitments by period of expiration. As of December 2017 $ in millions 2018 2019 - 2021 - 2023 - Commercial lending: Investment-grade $14,593 $38,836 $38,431 $ 1,255 Non-investment-grade 2,614 12,297 21,833 8,547 Warehouse financing 1,688 1,730 1,241 681 Total commitments to extend credit 18,895 52,863 61,505 10,483 Contingent and forward starting collateralized agreements 41,756 – – – Forward starting collateralized financings 16,902 – – – Letters of credit 288 109 – 40 Investment commitments 2,836 676 493 2,835 Other 6,089 171 50 – Total commitments $86,766 $53,819 $62,048 $13,358 Commitments to Extend Credit The firm’s commitments to extend credit are agreements to lend with fixed termination dates and depend on the satisfaction of all contractual conditions to borrowing. These commitments are presented net of amounts syndicated to third parties. The total commitment amount does not necessarily reflect actual future cash flows because the firm may syndicate all or substantial additional portions of these commitments. In addition, commitments can expire unused or be reduced or cancelled at the counterparty’s request. As of December 2017 and December 2016, $124.50 billion and $98.05 billion, respectively, of the firm’s lending commitments were held for investment and were accounted for on an accrual basis. See Note 9 for further information about such commitments. In addition, as of December 2017 and December 2016, $9.84 billion and $6.87 billion, respectively, of the firm’s lending commitments were held for sale and were accounted for at the lower of cost or fair value. The firm accounts for the remaining commitments to extend credit at fair value. Losses, if any, are generally recorded, net of any fees in other principal transactions. Commercial Lending. The firm’s commercial lending commitments are extended to investment-grade and non-investment-grade Sumitomo Mitsui Financial Group, Inc. (SMFG) provides the firm with credit loss protection on certain approved loan commitments (primarily investment-grade commercial lending commitments). The notional amount of such loan commitments was $25.70 billion and $26.88 billion as of December 2017 and December 2016, respectively. The credit loss protection on loan commitments provided by SMFG is generally limited to 95% of the first loss the firm realizes on such commitments, up to a maximum of approximately $950 million. In addition, subject to the satisfaction of certain conditions, upon the firm’s request, SMFG will provide protection for 70% of additional losses on such commitments, up to a maximum of $1.13 billion, of which $550 million and $768 million of protection had been provided as of December 2017 and December 2016, respectively. The firm also uses other financial instruments to mitigate credit risks related to certain commitments not covered by SMFG. These instruments primarily include credit default swaps that reference the same or similar underlying instrument or entity, or credit default swaps that reference a market index. Warehouse Financing. The firm provides financing to clients who warehouse financial assets. These arrangements are secured by the warehoused assets, primarily consisting of retail and corporate loans. Contingent and Forward Starting Collateralized Agreements / Forward Starting Collateralized Financings Contingent and forward starting collateralized agreements includes resale and securities borrowing agreements, and forward starting collateralized financings includes repurchase and secured lending agreements that settle at a future date, generally within three business days. The firm also enters into commitments to provide contingent financing to its clients and counterparties through resale agreements. The firm’s funding of these commitments depends on the satisfaction of all contractual conditions to the resale agreement and these commitments can expire unused. Letters of Credit The firm has commitments under letters of credit issued by various banks which the firm provides to counterparties in lieu of securities or cash to satisfy various collateral and margin deposit requirements. Investment Commitments Investment commitments includes commitments to invest in private equity, real estate and other assets directly and through funds that the firm raises and manages. Investment commitments included $2.09 billion and $2.10 billion as of December 2017 and December 2016, respectively, related to commitments to invest in funds managed by the firm. If these commitments are called, they would be funded at market value on the date of investment. Leases The firm has contractual obligations under long-term noncancelable lease agreements for office space expiring on various dates through 2069. Certain agreements are subject to periodic escalation provisions for increases in real estate taxes and other charges. The table below presents future minimum rental payments, net of minimum sublease rentals. $ in millions As of 2018 $ 299 2019 282 2020 262 2021 205 2022 145 2023 - thereafter 771 Total $1,964 Rent charged to operating expenses was $273 million for 2017, $244 million for 2016 and $249 million for 2015. Operating leases include office space held in excess of current requirements. Rent expense relating to space held for growth is included in occupancy expenses. The firm records a liability, based on the fair value of the remaining lease rentals reduced by any potential or existing sublease rentals, for leases where the firm has ceased using the space and management has concluded that the firm will not derive any future economic benefits. Costs to terminate a lease before the end of its term are recognized and measured at fair value on termination. Total occupancy expenses for space held in excess of the firm’s current requirements and exit costs related to its office space were not material for both 2017 and 2015, and were approximately $68 million for 2016. Contingencies Legal Proceedings. See Note 27 for information about legal proceedings, including certain mortgage-related matters, and agreements the firm has entered into to toll the statute of limitations. Certain Mortgage-Related Contingencies. There are multiple areas of focus by regulators, governmental agencies and others within the mortgage market that may impact originators, issuers, servicers and investors. There remains significant uncertainty surrounding the nature and extent of any potential exposure for participants in this market. The firm has not been a significant originator of residential mortgage loans. The firm did purchase loans originated by others and generally received loan-level representations. During the period 2005 through 2008, the firm sold approximately $10 billion of loans to government-sponsored enterprises and approximately $11 billion of loans to other third parties. In addition, the firm transferred $125 billion of loans to trusts and other mortgage securitization vehicles. In connection with both sales of loans and securitizations, the firm provided loan-level representations and/or assigned the loan-level representations from the party from whom the firm purchased the loans. The firm’s exposure to claims for repurchase of residential mortgage loans based on alleged breaches of representations will depend on a number of factors such as the extent to which these claims are made within the statute of limitations, taking into consideration the agreements to toll the statute of limitations the firm entered into with trustees representing certain trusts. Based upon the large number of defaults in residential mortgages, including those sold or securitized by the firm, there is a potential for repurchase claims. However, the firm is not in a position to make a meaningful estimate of that exposure at this time. Other Contingencies. In connection with the sale of Metro International Trade Services (Metro), the firm agreed to provide indemnities to the buyer, which primarily relate to fundamental representations and warranties, and potential liabilities for legal or regulatory proceedings arising out of the conduct of Metro’s business while the firm owned it. In connection with the settlement agreement with the Residential Mortgage-Backed Securities Working Group of the U.S. Financial Fraud Enforcement Task Force (RMBS Working Group), the firm agreed to provide $1.80 billion in consumer relief in the form of principal forgiveness for underwater homeowners and distressed borrowers; financing for construction, rehabilitation and preservation of affordable housing; and support for debt restructuring, foreclosure prevention and housing quality improvement programs, as well as land banks. Guarantees The table below presents information about certain derivatives that meet the definition of a guarantee, securities lending indemnifications and certain other financial guarantees. $ in millions Derivatives Securities lending Other As of December 2017 Carrying Value of Net Liability $ 5,406 $ – $ 37 Maximum Payout/Notional Amount by Period of Expiration 2018 $1,139,751 $37,959 $ 723 2019 - 2020 205,983 – 1,515 2021 - 2022 71,599 – 1,209 2023 - thereafter 76,540 – 137 Total $1,493,873 $37,959 $3,584 As of December 2016 Carrying Value of Net Liability $ 8,873 $ – $ 50 Maximum Payout/Notional Amount by Period of Expiration 2017 $ 432,328 $33,403 $1,064 2018 - 2019 261,676 – 763 2020 - 2021 71,264 – 1,662 2022 - thereafter 51,506 – 173 Total $ 816,774 $33,403 $3,662 In the table above: • The maximum payout is based on the notional amount of the contract and does not represent anticipated losses. • Amounts exclude certain commitments to issue standby letters of credit that are included in commitments to extend credit. See the tables in “Commitments” above for a summary of the firm’s commitments. • The carrying value for derivatives included derivative assets of $2.20 billion and $1.20 billion and derivative liabilities of $7.61 billion and $10.07 billion as of December 2017 and December 2016, respectively. Derivative Guarantees. The firm enters into various derivatives that meet the definition of a guarantee under U.S. GAAP, including written equity and commodity put options, written currency contracts and interest rate caps, floors and swaptions. These derivatives are risk managed together with derivatives that do not meet the definition of a guarantee, and therefore the amounts in the table above do not reflect the firm’s overall risk related to its derivative activities. Disclosures about derivatives are not required if they may be cash settled and the firm has no basis to conclude it is probable that the counterparties held the underlying instruments at inception of the contract. The firm has concluded that these conditions have been met for certain large, internationally active commercial and investment bank counterparties, central clearing counterparties and certain other counterparties. Accordingly, the firm has not included such contracts in the table above. In addition, see Note 7 for information about credit derivatives that meet the definition of a guarantee, which are not included in the table above. Derivatives are accounted for at fair value and therefore the carrying value is considered the best indication of payment/performance risk for individual contracts. However, the carrying values in the table above exclude the effect of counterparty and cash collateral netting. Securities Lending Indemnifications. The firm, in its capacity as an agency lender, indemnifies most of its securities lending customers against losses incurred in the event that borrowers do not return securities and the collateral held is insufficient to cover the market value of the securities borrowed. Collateral held by the lenders in connection with securities lending indemnifications was $39.03 billion and $34.33 billion as of December 2017 and December 2016, respectively. Because the contractual nature of these arrangements requires the firm to obtain collateral with a market value that exceeds the value of the securities lent to the borrower, there is minimal performance risk associated with these guarantees. Other Financial Guarantees. In the ordinary course of business, the firm provides other financial guarantees of the obligations of third parties (e.g., standby letters of credit and other guarantees to enable clients to complete transactions and fund-related guarantees). These guarantees represent obligations to make payments to beneficiaries if the guaranteed party fails to fulfill its obligation under a contractual arrangement with that beneficiary. Guarantees of Securities Issued by Trusts. The firm has established trusts, including Goldman Sachs Capital I, the APEX Trusts and other entities for the limited purpose of issuing securities to third parties, lending the proceeds to the firm and entering into contractual arrangements with the firm and third parties related to this purpose. The firm does not consolidate these entities. See Note 16 for further information about the transactions involving Goldman Sachs Capital I and the APEX Trusts. The firm effectively provides for the full and unconditional guarantee of the securities issued by these entities. Timely payment by the firm of amounts due to these entities under the guarantee, borrowing, preferred stock and related contractual arrangements will be sufficient to cover payments due on the securities issued by these entities. Management believes that it is unlikely that any circumstances will occur, such as nonperformance on the part of paying agents or other service providers, that would make it necessary for the firm to make payments related to these entities other than those required under the terms of the guarantee, borrowing, preferred stock and related contractual arrangements and in connection with certain expenses incurred by these entities. Indemnities and Guarantees of Service Providers. In the ordinary course of business, the firm indemnifies and guarantees certain service providers, such as clearing and custody agents, trustees and administrators, against specified potential losses in connection with their acting as an agent of, or providing services to, the firm or its affiliates. The firm may also be liable to some clients or other parties for losses arising from its custodial role or caused by acts or omissions of third-party service providers, including sub-custodians In connection with the firm’s prime brokerage and clearing businesses, the firm agrees to clear and settle on behalf of its clients the transactions entered into by them with other brokerage firms. The firm’s obligations in respect of such transactions are secured by the assets in the client’s account, as well as any proceeds received from the transactions cleared and settled by the firm on behalf of the client. In connection with joint venture investments, the firm may issue loan guarantees under which it may be liable in the event of fraud, misappropriation, environmental liabilities and certain other matters involving the borrower. The firm is unable to develop an estimate of the maximum payout under these guarantees and indemnifications. However, management believes that it is unlikely the firm will have to make any material payments under these arrangements, and no material liabilities related to these guarantees and indemnifications have been recognized in the consolidated statements of financial condition as of both December 2017 and December 2016. Other Representations, Warranties and Indemnifications. The firm provides representations and warranties to counterparties in connection with a variety of commercial transactions and occasionally indemnifies them against potential losses caused by the breach of those representations and warranties. The firm may also provide indemnifications protecting against changes in or adverse application of certain U.S. tax laws in connection with ordinary-course transactions such as securities issuances, borrowings or derivatives. In addition, the firm may provide indemnifications to some counterparties to protect them in the event additional taxes are owed or payments are withheld, due either to a change in or an adverse application of certain non-U.S. These indemnifications generally are standard contractual terms and are entered into in the ordinary course of business. Generally, there are no stated or notional amounts included in these indemnifications, and the contingencies triggering the obligation to indemnify are not expected to occur. The firm is unable to develop an estimate of the maximum payout under these guarantees and indemnifications. However, management believes that it is unlikely the firm will have to make any material payments under these arrangements, and no material liabilities related to these arrangements have been recognized in the consolidated statements of financial condition as of both December 2017 and December 2016. Guarantees of Subsidiaries. Group Inc. fully and unconditionally guarantees the securities issued by GS Finance Corp., a wholly-owned finance subsidiary of the firm. Group Inc. has guaranteed the payment obligations of Goldman Sachs & Co. LLC (GS&Co.) and GS Bank USA, subject to certain exceptions. In addition, Group Inc. guarantees many of the obligations of its other consolidated subsidiaries on a transaction-by-transaction

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2017
Text Block [Abstract]
Shareholders' Equity	Note 19. Shareholders’ Equity Common Equity As of both December 2017 and December 2016, the firm had 4.00 billion authorized shares of common stock and 200 million authorized shares of nonvoting common stock, each with a par value of $0.01 per share. Dividends declared per common share were $2.90 in 2017, $2.60 in 2016 and $2.55 in 2015. On January 16, 2018, the Board of Directors of Group Inc. (Board) declared a dividend of $0.75 per common share to be paid on March 29, 2018 to common shareholders of record on March 1, 2018. The firm’s share repurchase program is intended to help maintain the appropriate level of common equity. The share repurchase program is effected primarily through regular open-market purchases (which may include repurchase plans designed to comply with Rule 10b5-1), The table below presents the amount of common stock repurchased by the firm under the share repurchase program. Year Ended December in millions, except per share amounts 2017 2016 2015 Common share repurchases 29.0 36.6 22.1 Average cost per share $231.87 $165.88 $189.41 Total cost of common share repurchases $ 6,721 $ 6,069 $ 4,195 Pursuant to the terms of certain share-based compensation plans, employees may remit shares to the firm or the firm may cancel RSUs or stock options to satisfy minimum statutory employee tax withholding requirements and the exercise price of stock options. Under these plans, during 2017, 2016 and 2015, 12,165 shares, 49,374 shares and 35,217 shares were remitted with a total value of $3 million, $7 million and $6 million, and the firm cancelled 8.1 million, 6.1 million and 5.7 million of RSUs with a total value of $1.94 billion, $921 million and $1.03 billion, respectively. Under these plans, the firm also cancelled 4.6 million, 5.5 million and 2.0 million of stock options with a total value of $1.09 billion, $1.11 billion and $406 million during 2017, 2016 and 2015, respectively. Preferred Equity The tables below present details about the perpetual preferred stock issued and outstanding as of December 2017. Series Shares Shares Shares Depositary Shares A 50,000 30,000 29,999 1,000 B 50,000 32,000 32,000 1,000 C 25,000 8,000 8,000 1,000 D 60,000 54,000 53,999 1,000 E 17,500 7,667 7,667 N/A F 5,000 1,615 1,615 N/A J 46,000 40,000 40,000 1,000 K 32,200 28,000 28,000 1,000 L 52,000 52,000 52,000 25 M 80,000 80,000 80,000 25 N 31,050 27,000 27,000 1,000 O 26,000 26,000 26,000 25 P 66,000 60,000 60,000 25 Total 540,750 446,282 446,280 Series Earliest Redemption Date Liquidation Redemption ($ in millions) A Currently redeemable $ 25,000 $ 750 B Currently redeemable $ 25,000 800 C Currently redeemable $ 25,000 200 D Currently redeemable $ 25,000 1,350 E Currently redeemable $100,000 767 F Currently redeemable $100,000 161 J May 10, 2023 $ 25,000 1,000 K May 10, 2024 $ 25,000 700 L May 10, 2019 $ 25,000 1,300 M May 10, 2020 $ 25,000 2,000 N May 10, 2021 $ 25,000 675 O November 10, 2026 $ 25,000 650 P November 10, 2022 $ 25,000 1,500 Total $11,853 In the tables above: • All shares have a par value of $0.01 per share and, where applicable, each share is represented by the specified number of depositary shares. • The earliest redemption date represents the date on which each share of non-cumulative • Prior to redeeming preferred stock, the firm must receive confirmation that the FRB does not object to such capital action. • In November 2017, Group Inc. issued 60,000 shares of Series P perpetual 5.00% Fixed-to-Floating Non-Cumulative • The redemption price per share for Series A through F Preferred Stock is the liquidation preference plus declared and unpaid dividends. The redemption price per share for Series J through P Preferred Stock is the liquidation preference plus accrued and unpaid dividends. Each share of non-cumulative • All series of preferred stock are pari passu and have a preference over the firm’s common stock on liquidation. • The firm’s ability to declare or pay dividends on, or purchase, redeem or otherwise acquire, its common stock is subject to certain restrictions in the event that the firm fails to pay or set aside full dividends on the preferred stock for the latest completed dividend period. During 2016, the firm delivered a par amount of $1.32 billion (fair value of $1.04 billion) of APEX to the APEX Trusts in exchange for 9,833 shares of Series E Preferred Stock and 3,385 shares of Series F Preferred Stock for a total redemption value of $1.32 billion (net carrying value of $1.31 billion). Following the exchange, these shares of Series E and Series F Preferred Stock were cancelled. The difference between the fair value of the APEX and the net carrying value of the preferred stock at the time of cancellation was $266 million. This difference was recorded as a reduction to preferred stock dividends in 2016. See Note 16 for further information about APEX. In November 2017, the firm redeemed the 34,000 shares of Series I 5.95% Non-Cumulative In February 2018, the firm redeemed 26,000 shares of its outstanding Series B 6.20% Non-Cumulative The table below presents the dividend rates of the firm’s perpetual preferred stock as of December 2017. Series Per Annum Dividend Rate A 3 month LIBOR + 0.75%, with floor of 3.75%, payable quarterly B 6.20%, payable quarterly C 3 month LIBOR + 0.75%, with floor of 4.00%, payable quarterly D 3 month LIBOR + 0.67%, with floor of 4.00%, payable quarterly E 3 month LIBOR + 0.77%, with floor of 4.00%, payable quarterly F 3 month LIBOR + 0.77%, with floor of 4.00%, payable quarterly J 5.50% to, but excluding, May 10, 2023; 3 month LIBOR + 3.64% thereafter, payable quarterly K 6.375% to, but excluding, May 10, 2024; 3 month LIBOR + 3.55% thereafter, payable quarterly L 5.70%, payable semi-annually, from issuance date to, but excluding, May 10, 2019; 3 month LIBOR + 3.884%, payable quarterly, thereafter M 5.375%, payable semi-annually, from issuance date to, but excluding, N 6.30%, payable quarterly O 5.30%, payable semi-annually, from issuance date to, but excluding, November 10, 2026; 3 month LIBOR + 3.834%, payable quarterly, thereafter P 5.00%, payable semi-annually, from issuance date to, but excluding, In the table above, dividends on each series of preferred stock are payable in arrears for the periods specified. The table below presents dividends declared on the firm’s preferred stock. Year Ended December 2017 2016 2015 Series per share $ in millions per share $ in millions per share $ in A $ 950.51 $ 29 $ 953.12 $ 29 $ 950.52 $ 28 B $1,550.00 50 $1,550.00 50 $1,550.00 50 C $1,013.90 8 $1,016.68 8 $1,013.90 8 D $1,013.90 55 $1,016.68 55 $1,013.90 54 E $4,055.55 31 $4,066.66 50 $4,055.55 71 F $4,055.55 6 $4,066.66 13 $4,055.55 20 I $1,487.52 51 $1,487.52 51 $1,487.52 51 J $1,375.00 55 $1,375.00 55 $1,375.00 55 K $1,593.76 45 $1,593.76 45 $1,593.76 45 L $1,425.00 74 $1,425.00 74 $1,425.00 74 M $1,343.76 107 $1,343.76 107 $ 735.33 59 N $1,575.00 42 $1,124.38 30 $ – – O $1,325.00 34 $ 379.10 10 $ – – Total $587 $577 $515 In the table above, the total preferred dividend amounts for Series E and Series F Preferred Stock for 2016 include prorated dividends of $866.67 per share related to 4,861 shares of Series E Preferred Stock and 1,639 shares of Series F Preferred Stock, which were cancelled during 2016. On January 10, 2018, Group Inc. declared dividends of $244.79, $387.50, $261.11, $261.11, $343.75, $398.44 and $393.75 per share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock, Series J Preferred Stock, Series K Preferred Stock and Series N Preferred Stock, respectively, to be paid on February 12, 2018 to preferred shareholders of record on January 28, 2018. In addition, the firm declared dividends of $1,000.00 per each share of Series E Preferred Stock and Series F Preferred Stock, to be paid on March 1, 2018 to preferred shareholders of record on February 14, 2018. Accumulated Other Comprehensive Loss The table below presents changes in the accumulated other comprehensive loss, net of tax, by type. $ in millions Beginning Other Ending Year Ended December 2017 Currency translation $ (647 ) $ 22 $ (625 ) Debt valuation adjustment (239 ) (807 ) (1,046 ) Pension and postretirement liabilities (330 ) 130 (200 ) Available-for-sale – (9 ) (9 ) Total $(1,216 ) $(664 ) $(1,880 ) Year Ended December 2016 Currency translation $ (587 ) $ (60 ) $ (647 ) Debt valuation adjustment 305 (544 ) (239 ) Pension and postretirement liabilities (131 ) (199 ) (330 ) Total $ (413 ) $(803 ) $(1,216 ) In the table above, the beginning balance of accumulated other comprehensive loss for December 2016 has been adjusted to reflect the cumulative effect of the change in accounting principle related to debt valuation adjustment, net of tax. See Note 3 for further information about the adoption of ASU No. 2016-01.

Regulation and Capital Adequacy

Regulation and Capital Adequacy	12 Months Ended
	Dec. 31, 2017
Text Block [Abstract]
Regulation and Capital Adequacy	Note 20. Regulation and Capital Adequacy The FRB is the primary regulator of Group Inc., a bank holding company (BHC) under the U.S. Bank Holding Company Act of 1956 and a financial holding company under amendments to this Act. As a BHC, the firm is subject to consolidated regulatory capital requirements which are calculated in accordance with the risk-based capital and leverage regulations of the FRB, subject to certain transitional provisions (Capital Framework). The risk-based capital requirements are expressed as capital ratios that compare measures of regulatory capital to risk-weighted assets (RWAs). Failure to comply with these capital requirements could result in restrictions being imposed by the firm’s regulators. The firm’s capital levels are also subject to qualitative judgments by the regulators about components of capital, risk weightings and other factors. Furthermore, certain of the firm’s subsidiaries are subject to separate regulations and capital requirements as described below. Capital Framework The regulations under the Capital Framework are largely based on the Basel Committee on Banking Supervision’s (Basel Committee) capital framework for strengthening international capital standards (Basel III) and also implement certain provisions of the Dodd-Frank Act. Under the Capital Framework, the firm is an “Advanced approach” banking organization and has been designated as a global systemically important bank (G-SIB). The firm calculates its Common Equity Tier 1 (CET1), Tier 1 capital and Total capital ratios in accordance with (i) the Standardized approach and market risk rules set out in the Capital Framework (together, the Standardized Capital Rules) and (ii) the Advanced approach and market risk rules set out in the Capital Framework (together, the Basel III Advanced Rules). The lower of each capital ratio calculated in (i) and (ii) is the ratio against which the firm’s compliance with its minimum ratio requirements is assessed. Each of the capital ratios calculated in accordance with the Basel III Advanced Rules was lower than that calculated in accordance with the Standardized Capital Rules and therefore the Basel III Advanced ratios were the ratios that applied to the firm as of both December 2017 and December 2016. The capital ratios that apply to the firm can change in future reporting periods as a result of these regulatory requirements. Regulatory Capital and Capital Ratios. The table below presents the minimum ratios required for the firm. As of December 2017 2016 CET1 ratio 7.000% 5.875% Tier 1 capital ratio 8.500% 7.375% Total capital ratio 10.500% 9.375% Tier 1 leverage ratio 4.000% 4.000% In the table above: • The minimum capital ratios as of December 2017 reflect (i) the 50% phase-in phase-in G-SIB • The minimum capital ratios as of December 2016 reflect (i) the 25% phase-in phase-in G-SIB • Tier 1 leverage ratio is defined as Tier 1 capital divided by quarterly average adjusted total assets (which includes adjustments for goodwill and identifiable intangible assets, and certain investments in nonconsolidated financial institutions). Certain aspects of the Capital Framework’s requirements phase in over time (transitional provisions). These include capital buffers and certain deductions from regulatory capital (such as investments in nonconsolidated financial institutions). These deductions from regulatory capital are required to be phased in ratably per year from 2014 to 2018, with residual amounts not deducted during the transitional period subject to risk weighting. In addition, junior subordinated debt issued to trusts is being phased out of regulatory capital. The minimum CET1, Tier 1 and Total capital ratios that apply to the firm will increase as the capital buffers are phased in. The capital conservation buffer, which consists entirely of capital that qualifies as CET1, began to phase in on January 1, 2016 and will continue to do so in increments of 0.625% per year until it reaches 2.5% of RWAs on January 1, 2019. The G-SIB G-SIB. G-SIB The Capital Framework also provides for a countercyclical capital buffer, which is an extension of the capital conservation buffer, of up to 2.5% (consisting entirely of CET1) intended to counteract systemic vulnerabilities. As of December 2017, the FRB has set the countercyclical capital buffer at zero percent. Failure to meet the capital levels inclusive of the buffers could limit the firm’s ability to distribute capital, including share repurchases and dividend payments, and to make certain discretionary compensation payments. Definition of Risk-Weighted Assets. RWAs are calculated in accordance with both the Standardized Capital Rules and the Basel III Advanced Rules. The following is a comparison of RWA calculations under these rules: • RWAs for credit risk in accordance with the Standardized Capital Rules are calculated in a different manner than the Basel III Advanced Rules. The primary difference is that the Standardized Capital Rules do not contemplate the use of internal models to compute exposure for credit risk on derivatives and securities financing transactions, whereas the Basel III Advanced Rules permit the use of such models, subject to supervisory approval. In addition, credit RWAs calculated in accordance with the Standardized Capital Rules utilize prescribed risk-weights which depend largely on the type of counterparty, rather than on internal assessments of the creditworthiness of such counterparties; • RWAs for market risk in accordance with the Standardized Capital Rules and the Basel III Advanced Rules are generally consistent; and • RWAs for operational risk are not required by the Standardized Capital Rules, whereas the Basel III Advanced Rules do include such a requirement. Credit Risk Credit RWAs are calculated based upon measures of exposure, which are then risk weighted. The following is a description of the calculation of credit RWAs in accordance with the Standardized Capital Rules and the Basel III Advanced Rules: • For credit RWAs calculated in accordance with the Standardized Capital Rules, the firm utilizes prescribed risk-weights which depend largely on the type of counterparty (e.g., whether the counterparty is a sovereign, bank, broker-dealer or other entity). The exposure measure for derivatives is based on a combination of positive net current exposure and a percentage of the notional amount of each derivative. The exposure measure for securities financing transactions is calculated to reflect adjustments for potential price volatility, the size of which depends on factors such as the type and maturity of the security, and whether it is denominated in the same currency as the other side of the financing transaction. The firm utilizes specific required formulaic approaches to measure exposure for securitizations and equities; and • For credit RWAs calculated in accordance with the Basel III Advanced Rules, the firm has been given permission by its regulators to compute risk-weights for wholesale and retail credit exposures in accordance with the Advanced Internal Ratings-Based approach. This approach is based on internal assessments of the creditworthiness of counterparties, with key inputs being the probability of default, loss given default and the effective maturity. The firm utilizes internal models to measure exposure for derivatives and securities financing transactions. The Capital Framework requires that a BHC obtain prior written agreement from its regulators before using internal models for such purposes. The firm utilizes specific required formulaic approaches to measure exposure for securitizations and equities. Market Risk Market RWAs are calculated based on measures of exposure which include Value-at-Risk • VaR is the potential loss in value of inventory positions, as well as certain other financial assets and financial liabilities, due to adverse market movements over a defined time horizon with a specified confidence level. For both risk management purposes and regulatory capital calculations the firm uses a single VaR model which captures risks including those related to interest rates, equity prices, currency rates and commodity prices. However, VaR used for regulatory capital requirements (regulatory VaR) differs from risk management VaR due to different time horizons and confidence levels (10-day one-day one-day one-day • Stressed VaR is the potential loss in value of inventory positions, as well as certain other financial assets and financial liabilities, during a period of significant market stress; • Incremental risk is the potential loss in value of non-securitized one-year • Comprehensive risk is the potential loss in value, due to price risk and defaults, within the firm’s credit correlation positions; and • Specific risk is the risk of loss on a position that could result from factors other than broad market movements, including event risk, default risk and idiosyncratic risk. The standardized measurement method is used to determine specific risk RWAs, by applying supervisory defined risk-weighting factors after applicable netting is performed. Operational Risk Operational RWAs are only required to be included under the Basel III Advanced Rules. The firm has been given permission by its regulators to calculate operational RWAs in accordance with the “Advanced Measurement Approach,” and therefore utilizes an internal risk-based model to quantify Operational RWAs. Consolidated Regulatory Capital Ratios Capital Ratios and RWAs. Each of the capital ratios calculated in accordance with the Basel III Advanced Rules was lower than that calculated in accordance with the Standardized Capital Rules as of both December 2017 and December 2016, and therefore such lower ratios applied to the firm as of these dates. The table below presents the ratios calculated in accordance with both the Standardized Capital Rules and Basel III Advanced Rules. As of December $ in millions 2017 2016 Common shareholders’ equity $ 70,390 $ 75,690 Deduction for goodwill and identifiable intangible assets, net of deferred tax liabilities (3,269 ) (2,874 ) Deduction for investments in nonconsolidated financial institutions – (424 ) Other adjustments (11 ) (346 ) Common Equity Tier 1 67,110 72,046 Preferred stock 11,853 11,203 Deduction for investments in covered funds (590 ) (445 ) Other adjustments (42 ) (364 ) Tier 1 capital $ 78,331 $ 82,440 Standardized Tier 2 and Total capital Tier 1 capital $ 78,331 $ 82,440 Qualifying subordinated debt 13,360 14,566 Junior subordinated debt issued to trusts 567 792 Allowance for losses on loans and lending commitments 1,078 722 Other adjustments (28 ) (6 ) Standardized Tier 2 capital 14,977 16,074 Standardized Total capital $ 93,308 $ 98,514 Basel III Advanced Tier 2 and Total capital Tier 1 capital $ 78,331 $ 82,440 Standardized Tier 2 capital 14,977 16,074 Allowance for losses on loans and lending commitments (1,078 ) (722 ) Basel III Advanced Tier 2 capital 13,899 15,352 Basel III Advanced Total capital $ 92,230 $ 97,792 RWAs Standardized $555,611 $496,676 Basel III Advanced $617,646 $549,650 CET1 ratio Standardized 12.1% 14.5% Basel III Advanced 10.9% 13.1% Tier 1 capital ratio Standardized 14.1% 16.6% Basel III Advanced 12.7% 15.0% Total capital ratio Standardized 16.8% 19.8% Basel III Advanced 14.9% 17.8% Tier 1 leverage ratio 8.4% 9.4% Effective January 2018, the firm was subject to the fully phased-in phased-in In the table above: • Deduction for goodwill and identifiable intangible assets, net of deferred tax liabilities, included goodwill of $3.67 billion as of both December 2017 and December 2016, and identifiable intangible assets of $298 million (80% of $373 million) and $257 million (60% of $429 million) as of December 2017 and December 2016, respectively, net of associated deferred tax liabilities of $694 million and $1.05 billion as of December 2017 and December 2016, respectively. Goodwill is fully deducted from CET1, while the deduction for identifiable intangible assets is required to be phased into CET1 ratably over five years from 2014 to 2018. The balance that is not deducted during the transitional period is risk weighted. • Deduction for investments in nonconsolidated financial institutions represents the amount by which the firm’s investments in the capital of nonconsolidated financial institutions exceed certain prescribed thresholds. The deduction for such investments is required to be phased into CET1 ratably over five years from 2014 to 2018. As of December 2017 and December 2016, CET1 reflects 80% and 60% of the deduction, respectively. The balance that is not deducted during the transitional period is risk weighted. • Deduction for investments in covered funds represents the firm’s aggregate investments in applicable covered funds, excluding investments that are subject to an extended conformance period. This deduction was not subject to a transition period. See Note 6 for further information about the Volcker Rule. • Other adjustments within CET1 and Tier 1 capital primarily include credit valuation adjustments on derivative liabilities, pension and postretirement liabilities, the overfunded portion of the firm’s defined benefit pension plan obligation net of associated deferred tax liabilities, disallowed deferred tax assets, debt valuation adjustments and other required credit risk-based deductions. The deduction for such items is generally required to be phased into CET1 ratably over five years from 2014 to 2018. As of December 2017 and December 2016, CET1 reflects 80% and 60% of such deduction, respectively. The balance that is not deducted from CET1 during the transitional period is generally deducted from Tier 1 capital within other adjustments. • As of December 2017, junior subordinated debt issued to trusts was fully phased out of Tier 1 capital, with 50% included in Tier 2 capital and 50% fully phased out of regulatory capital. As of December 2016, junior subordinated debt issued to trusts was fully phased out of Tier 1 capital, with 60% included in Tier 2 capital and 40% fully phased out of regulatory capital. Junior subordinated debt issued to trusts is reduced by the amount of trust preferred securities purchased by the firm and will be fully phased out of Tier 2 capital by 2022 at a rate of 10% per year. See Note 16 for further information about the firm’s junior subordinated debt issued to trusts and trust preferred securities purchased by the firm. • Qualifying subordinated debt is subordinated debt issued by Group Inc. with an original maturity of five years or greater. The outstanding amount of subordinated debt qualifying for Tier 2 capital is reduced upon reaching a remaining maturity of five years. See Note 16 for further information about the firm’s subordinated debt. The tables below present changes in CET1, Tier 1 capital and Tier 2 capital. Year Ended December 2017 $ in millions Standardized Basel III Advanced Common Equity Tier 1 Beginning balance $72,046 $72,046 Change in common shareholders’ equity (5,300 ) (5,300 ) Change in deduction for: Transitional provisions (426 ) (426 ) Goodwill and identifiable intangible assets, net of deferred tax liabilities (324 ) (324 ) Investments in nonconsolidated financial institutions 586 586 Change in other adjustments 528 528 Ending balance $67,110 $67,110 Tier 1 capital Beginning balance $82,440 $82,440 Change in deduction for: Transitional provisions (274 ) (274 ) Investments in covered funds (145 ) (145 ) Other net decrease in CET1 (4,510 ) (4,510 ) Change in preferred stock 650 650 Change in other adjustments 170 170 Ending balance 78,331 78,331 Tier 2 capital Beginning balance 16,074 15,352 Change in qualifying subordinated debt (1,206 ) (1,206 ) Redesignation of junior subordinated debt issued to trusts (225 ) (225 ) Change in the allowance for losses on loans and lending commitments 356 – Change in other adjustments (22 ) (22 ) Ending balance 14,977 13,899 Total capital $93,308 $92,230 Year Ended December 2016 $ in millions Standardized Basel III Advanced Common Equity Tier 1 Beginning balance $71,363 $71,363 Change in common shareholders’ equity 162 162 Change in deduction for: Transitional provisions (839 ) (839 ) Goodwill and identifiable intangible assets, net of deferred tax liabilities 16 16 Investments in nonconsolidated financial institutions 895 895 Change in other adjustments 449 449 Ending balance $72,046 $72,046 Tier 1 capital Beginning balance $81,511 $81,511 Change in deduction for: Transitional provisions (558 ) (558 ) Investments in covered funds (32 ) (32 ) Other net increase in CET1 1,522 1,522 Redesignation of junior subordinated debt issued to trusts (330 ) (330 ) Change in preferred stock 3 3 Change in other adjustments 324 324 Ending balance 82,440 82,440 Tier 2 capital Beginning balance 16,705 16,103 Change in qualifying subordinated debt (566 ) (566 ) Redesignation of junior subordinated debt issued to trusts (198 ) (198 ) Change in the allowance for losses on loans and lending commitments 120 – Change in other adjustments 13 13 Ending balance 16,074 15,352 Total capital $98,514 $97,792 In the tables above, the change in the deduction for transitional provisions represents the increased phase-in The tables below present the components of RWAs calculated in accordance with the Standardized Capital Rules and Basel III Advanced Rules. Standardized Capital Rules $ in millions 2017 2016 Credit RWAs Derivatives $126,076 $124,286 Commitments, guarantees and loans 145,104 115,744 Securities financing transactions 77,962 71,319 Equity investments 48,155 41,428 Other 70,933 58,636 Total Credit RWAs 468,230 411,413 Market RWAs Regulatory VaR 7,532 9,750 Stressed VaR 32,753 22,475 Incremental risk 8,441 7,875 Comprehensive risk 2,397 5,338 Specific risk 36,258 39,825 Total Market RWAs 87,381 85,263 Total RWAs $555,611 $496,676 Basel III Advanced Rules $ in millions 2017 2016 Credit RWAs Derivatives $102,986 $105,096 Commitments, guarantees and loans 163,375 122,792 Securities financing transactions 19,362 14,673 Equity investments 51,626 44,095 Other 75,968 63,431 Total Credit RWAs 413,317 350,087 Market RWAs Regulatory VaR 7,532 9,750 Stressed VaR 32,753 22,475 Incremental risk 8,441 7,875 Comprehensive risk 1,870 4,550 Specific risk 36,258 39,825 Total Market RWAs 86,854 84,475 Total Operational RWAs 117,475 115,088 Total RWAs $617,646 $549,650 In the tables above: • Securities financing transactions represent resale and repurchase agreements and securities borrowed and loaned transactions. • Other includes receivables, certain debt securities, cash and cash equivalents and other assets. The table below presents changes in RWAs calculated in accordance with the Standardized Capital Rules and Basel III Advanced Rules. Year Ended December 2017 $ in millions Standardized Basel III Risk-Weighted Assets Beginning balance $496,676 $549,650 Credit RWAs Change in: Deduction for transitional provisions (233 ) (233 ) Derivatives 1,790 (2,110 ) Commitments, guarantees and loans 29,360 40,583 Securities financing transactions 6,643 4,689 Equity investments 6,889 7,693 Other 12,368 12,608 Change in Credit RWAs 56,817 63,230 Market RWAs Change in: Regulatory VaR (2,218 ) (2,218 ) Stressed VaR 10,278 10,278 Incremental risk 566 566 Comprehensive risk (2,941 ) (2,680 ) Specific risk (3,567 ) (3,567 ) Change in Market RWAs 2,118 2,379 Operational RWAs Change in operational risk – 2,387 Change in Operational RWAs – 2,387 Ending balance $555,611 $617,646 In the table above, the increased deduction for transitional provisions represents the increased phase-in Standardized Credit RWAs as of December 2017 increased by $56.82 billion compared with December 2016, primarily reflecting an increase in commitments, guarantees and loans, principally due to increased lending activity. Standardized Market RWAs as of December 2017 increased by $2.12 billion compared with December 2016, primarily reflecting an increase in stressed VaR as a result of increased risk exposures partially offset by decreases in specific risk, as a result of changes in risk exposures, and comprehensive risk, as a result of changes in risk measurements. Basel III Advanced Credit RWAs as of December 2017 increased by $63.23 billion compared with December 2016, primarily reflecting an increase in commitments, guarantees and loans, principally due to increased lending activity. Basel III Advanced Market RWAs as of December 2017 increased by $2.38 billion compared with December 2016, primarily reflecting an increase in stressed VaR as a result of increased risk exposures partially offset by decreases in specific risk, as a result of changes in risk exposures, and comprehensive risk, as a result of changes in risk measurements. The table below presents changes in RWAs calculated in accordance with the Standardized Capital Rules and Basel III Advanced Rules. Year Ended December 2016 $ in millions Standardized Basel III Risk-Weighted Assets Beginning balance $524,107 $577,651 Credit RWAs Change in: Deduction for transitional provisions (531 ) (531 ) Derivatives (12,555 ) (8,575 ) Commitments, guarantees and loans 4,353 8,269 Securities financing transactions (73 ) (228 ) Equity investments 4,196 4,440 Other (4,095 ) 2,630 Change in Credit RWAs (8,705 ) 6,005 Market RWAs Change in: Regulatory VaR (2,250 ) (2,250 ) Stressed VaR 737 737 Incremental risk (1,638 ) (1,638 ) Comprehensive risk (387 ) (167 ) Specific risk (15,188 ) (15,188 ) Change in Market RWAs (18,726 ) (18,506 ) Operational RWAs Change in operational risk – (15,500 ) Change in Operational RWAs – (15,500 ) Ending balance $496,676 $549,650 In the table above, the increased deduction for transitional provisions represents the increased phase-in Standardized Credit RWAs as of December 2016 decreased by $8.71 billion compared with December 2015, primarily reflecting a decrease in derivatives, principally due to reduced exposures, and a decrease in receivables included in other credit RWAs reflecting the impact of firm and client activity. This decrease was partially offset by increases in commitments, guarantees and loans principally due to increased lending activity, and equity investments, principally due to increased exposures and the impact of market movements. Standardized Market RWAs as of December 2016 decreased by $18.73 billion compared with December 2015, primarily reflecting a decrease in specific risk as a result of reduced risk exposures. Basel III Advanced Credit RWAs as of December 2016 increased by $6.01 billion compared with December 2015, primarily reflecting an increase in commitments, guarantees and loans principally due to increased lending activity, and an increase in equity investments, principally due to increased exposures and the impact of market movements. These increases were partially offset by a decrease in derivatives, principally due to lower counterparty credit risk and reduced exposure. Basel III Advanced Market RWAs as of December 2016 decreased by $18.51 billion compared with December 2015, primarily reflecting a decrease in specific risk as a result of reduced risk exposures. Basel III Advanced Operational RWAs as of December 2016 decreased by $15.50 billion compared with December 2015, reflecting a decrease in the frequency of certain events incorporated within the firm’s risk-based model. Bank Subsidiaries Regulatory Capital Ratios. GS Bank USA, an FDIC-insured, New York State-chartered bank and a member of the Federal Reserve System, is supervised and regulated by the FRB, the FDIC, the New York State Department of Financial Services and the Consumer Financial Protection Bureau, and is subject to regulatory capital requirements that are calculated in substantially the same manner as those applicable to BHCs. For purposes of assessing the adequacy of its capital, GS Bank USA calculates its capital ratios in accordance with the risk-based capital and leverage requirements applicable to state member banks. Those requirements are based on the Capital Framework described above. GS Bank USA is an Advanced approach banking organization under the Capital Framework. Under the regulatory framework for prompt corrective action applicable to GS Bank USA, in order to meet the quantitative requirements for being a “well-capitalized” depository institution, GS Bank USA must meet higher minimum requirements than the minimum ratios in the table below. As of both December 2017 and December 2016, GS Bank USA was in compliance with its minimum capital requirements and the “well-capitalized” minimum ratios. The table below presents the minimum ratios and the “well-capitalized” minimum ratios required for GS Bank USA. Minimum Ratio as of December “Well-capitalized” 2017 2016 CET1 ratio 5.750% 5.125% 6.5% Tier 1 capital ratio 7.250% 6.625% 8.0% Total capital ratio 9.250% 8.625% 10.0% Tier 1 leverage ratio 4.000% 4.000% 5.0% In the table above: • The minimum capital ratios as of December 2017 reflect (i) the 50% phase-in • The minimum capital ratios as of December 2016 reflect (i) the 25% phase-in GS Bank USA’s capital levels and prompt corrective action classification are also subject to qualitative judgments by the regulators about components of capital, risk weightings and other factors. Failure to comply with these capital requirements, including a breach of the buffers described above, could result in restrictions being imposed by GS Bank USA’s regulators. Similar to the firm, GS Bank USA is required to calculate each of the CET1, Tier 1 capital and Total capital ratios in accordance with both the Standardized Capital Rules and Basel III Advanced Rules. The lower of each capital ratio calculated in accordance with the Standardized Capital Rules and Basel III Advanced Rules is the ratio against which GS Bank USA’s compliance with its minimum ratio requirements is assessed. Each of the capital ratios calculated in accordance with the Standardized Capital Rules was lower than that calculated in accordance with the Basel III Advanced Rules and therefore the Standardized Capital ratios were the ratios that applied to GS Bank USA as of both December 2017 and December 2016. The capital ratios that apply to GS Bank USA can change in future reporting periods as a result of these regulatory requirements. The table below presents the ratios for GS Bank USA calculated in accordance with both the Standardized Capital Rules and Basel III Advanced Rules. As of December $ in millions 2017 2016 Standardized Common Equity Tier 1 $ 25,343 $ 24,485 Tier 1 capital 25,343 24,485 Tier 2 capital 2,547 2,382 Total capital $ 27,890 $ 26,867 Basel III Advanced Common Equity Tier 1 $ 25,343 $ 24,485 Tier 1 capital 25,343 24,485 Standardized Tier 2 capital 2,547 2,382 Allowance for losses on loans and (547 ) (382 ) Tier 2 capital 2,000 2,000 Total capital $ 27,343 $ 26,485 RWAs Standardized $229,775 $204,232 Basel III Advanced $164,602 $131,051 CET1 ratio Standardized 11.0% 12.0% Basel III Advanced 15.4% 18.7% Tier 1 capital ratio Standardized 11.0% 12.0% Basel III Advanced 15.4% 18.7% Total capital ratio Standardized 12.1% 13.2% Basel III Advanced 16.6% 20.2% Tier 1 leverage ratio 15.0% 14.4% The decrease in GS Bank USA’s Standardized and Basel III Advanced capital ratios from December 2016 to December 2017 is primarily due to an increase in credit RWAs, principally due to an increase in lending activity. The firm’s principal non-U.S. Other. The deposits of GS Bank USA are insured by the FDIC to the extent provided by law. The FRB requires that GS Bank USA maintain cash reserves with the Federal Reserve Bank of New York. The amount deposited by GS Bank USA at the Federal Reserve Bank of New York was $50.86 billion and $74.24 billion as of December 2017 and December 2016, respectively, which exceeded required reserve amounts by $50.74 billion and $74.09 billion as of December 2017 and December 2016, respectively. Broker-Dealer Subsidiaries U.S. Regulated Broker-Dealer Subsidiaries. GS&Co. is the firm’s primary U.S. regulated broker-dealer subsidiary and is subject to regulatory capital requirements including those imposed by the SEC and the Financial Industry Regulatory Authority, Inc. In addition, GS&Co. is a registered futures commission merchant and is subject to regulatory capital requirements imposed by the CFTC, the Chicago Mercantile Exchange and the National Futures Association. Rule 15c3-1 Rule 15c3-1. As of December 2017 and December 2016, GS&Co. had regulatory net capital, as defined by Rule 15c3-1, Rule 15c3-1. Non-U.S. Regulated Broker-Dealer Subsidiaries. The firm’s principal non-U.S. non-U.S. Restrictions on Payments Group Inc.’s ability to withdraw capital from its regulated subsidiaries is limited by minimum equity capital requirements applicable to those subsidiaries, provisions of applicable law and regulations and other regulatory restrictions that limit the ability of those subsidiaries to declare and pay dividends without prior regulatory approval (e.g., the amount of dividends that may be paid by GS Bank USA is limited to the lesser of the amounts calculated under a recent earnings test and an undivided profits test) even if the relevant subsidiary would satisfy the equity capital requirements applicable to it after giving effect to the dividend. For example, the FRB, the FDIC and the New York State Department of Financial Services have authority to prohibit or to limit the payment of dividends by the banking organizations they supervise (including GS Bank USA) if, in the relevant regulator’s opinion, payment of a dividend would constitute an unsafe or unsound practice in the light of the financial condition of the banking organization. As of December 2017 and December 2016, Group Inc. was required to maintain $53.02 billion and $46.49 billion, respectively, of minimum equity capital in its regulated subsidiaries in order to satisfy the regulatory requirements of such subsidiaries.

Earnings Per Common Share

Earnings Per Common Share	12 Months Ended
	Dec. 31, 2017
Earnings Per Share [Abstract]
Earnings Per Common Share	Note 21. Earnings Per Common Share Basic earnings per common share (EPS) is calculated by dividing net earnings applicable to common shareholders by the weighted average number of common shares outstanding and RSUs for which no future service is required as a condition to the delivery of the underlying common stock (collectively, basic shares). Diluted EPS includes the determinants of basic EPS and, in addition, reflects the dilutive effect of the common stock deliverable for stock options and for RSUs for which future service is required as a condition to the delivery of the underlying common stock. The table below presents the computations of basic and diluted EPS. Year Ended December in millions, except per share amounts 2017 2016 2015 Net earnings applicable to common shareholders $3,685 $7,087 $5,568 Weighted average basic shares 401.6 427.4 448.9 Effect of dilutive securities: RSUs 5.3 4.7 5.3 Stock options 2.2 3.0 4.4 Dilutive securities 7.5 7.7 9.7 Weighted average basic shares and dilutive securities 409.1 435.1 458.6 Basic EPS $ 9.12 $16.53 $12.35 Diluted EPS $ 9.01 $16.29 $12.14 In the table above, unvested share-based awards that have non-forfeitable The diluted EPS computations in the table above do not include antidilutive securities (RSUs and common shares underlying stock options) of 0.1 million for 2017, 2.8 million for 2016 and 6.0 million for 2015.

Transactions with Affiliated Fu

Transactions with Affiliated Funds	12 Months Ended
	Dec. 31, 2017
Text Block [Abstract]
Transactions with Affiliated Funds	Note 22. Transactions with Affiliated Funds The firm has formed numerous nonconsolidated investment funds with third-party investors. As the firm generally acts as the investment manager for these funds, it is entitled to receive management fees and, in certain cases, advisory fees or incentive fees from these funds. Additionally, the firm invests alongside the third-party investors in certain funds. The tables below present fees earned from affiliated funds, fees receivable from affiliated funds and the aggregate carrying value of the firm’s interests in affiliated funds. Year Ended December $ in millions 2017 2016 2015 Fees earned from funds $2,932 $2,777 $3,293 As of December $ in millions 2017 2016 Fees receivable from funds $ 637 $ 554 Aggregate carrying value of interests in funds $4,993 $6,841 The firm may periodically determine to waive certain management fees on selected money market funds. Management fees waived were $98 million and $104 million for 2017 and 2016, respectively. The Volcker Rule restricts the firm from providing financial support to covered funds (as defined in the rule) after the expiration of the conformance period. As a general matter, in the ordinary course of business, the firm does not expect to provide additional voluntary financial support to any covered funds but may choose to do so with respect to funds that are not subject to the Volcker Rule; however, in the event that such support is provided, the amount is not expected to be material. As of December 2017 and December 2016, the firm had an outstanding guarantee, as permitted under the Volcker Rule, on behalf of its funds of $154 million and $300 million, respectively. The firm has voluntarily provided this guarantee in connection with a financing agreement with a third-party lender executed by one of the firm’s real estate funds that is not covered by the Volcker Rule. As of both December 2017 and December 2016, except as noted above, the firm has not provided any additional financial support to its affiliated funds. In addition, in the ordinary course of business, the firm may also engage in other activities with its affiliated funds including, among others, securities lending, trade execution, market making, custody, and acquisition and bridge financing. See Note 18 for the firm’s investment commitments related to these funds.

Interest Income and Interest Ex

Interest Income and Interest Expense	12 Months Ended
	Dec. 31, 2017
Banking and Thrift, Interest [Abstract]
Interest Income and Interest Expense	Note 23. Interest Income and Interest Expense Interest is recorded over the life of the instrument on an accrual basis based on contractual interest rates. The table below presents the firm’s sources of interest income and interest expense. Year Ended December $ in millions 2017 2016 2015 Interest income Deposits with banks $ 819 $ 452 $ 241 Collateralized agreements 1,661 691 17 Financial instruments owned 5,904 5,444 5,862 Loans receivable 2,678 1,843 1,191 Other interest 2,051 1,261 1,141 Total interest income 13,113 9,691 8,452 Interest expense Deposits 1,380 878 408 Collateralized financings 863 442 330 Financial instruments sold, but 1,388 1,251 1,319 Short-term secured and 698 446 429 Long-term secured and 4,599 4,242 3,878 Other interest 1,253 (155 ) (976 ) Total interest expense 10,181 7,104 5,388 Net interest income $ 2,932 $2,587 $3,064 In the table above: • Collateralized agreements includes rebates paid and interest income on securities borrowed. • Other interest income includes interest income on customer debit balances and other interest-earning assets. • Collateralized financings consists of securities sold under agreements to repurchase and securities loaned. • Other interest expense includes rebates received on other interest-bearing liabilities and interest expense on customer credit balances.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Note 24. Income Taxes Tax Legislation The provision for taxes in 2017 reflected an increase in Income tax expense of $4.40 billion representing the estimated impact of Tax Legislation enacted on December 22, 2017. The $4.40 billion income tax expense includes the repatriation tax on undistributed earnings of foreign subsidiaries, the effects of the implementation of a territorial tax system and the remeasurement of U.S. deferred tax assets at lower enacted tax rates. The repatriation tax is based on the greater of the firm’s post-1986 earnings and profits as of November 2, 2017 or December 31, 2017. Income taxes paid or payable to foreign jurisdictions partially reduce the repatriation tax as a foreign tax credit, based on a formula that includes future earnings of certain foreign subsidiaries. The calculation resulted in an estimated income tax expense of $3.32 billion. U.S. deferred tax assets and liabilities were required to be remeasured as of December 22, 2017 to the new U.S. federal income tax rate of 21% and to any federal impact associated with state and local deferred income taxes, as well as due to the implementation of the territorial tax system. This remeasurement resulted in an estimated income tax expense of $1.08 billion. While the components of the impact of Tax Legislation described above were calculated to account for all available information, these amounts are estimates. The firm anticipates modification to the estimate may occur as a result of (i) refinement of the firm’s calculations based on updated information, (ii) changes in the firm’s interpretations and assumptions, (iii) updates from issuance of future legislative guidance and (iv) actions the firm may take as a result of Tax Legislation. Provision for Income Taxes Income taxes are provided for using the asset and liability method under which deferred tax assets and liabilities are recognized for temporary differences between the financial reporting and tax bases of assets and liabilities. The firm reports interest expense related to income tax matters in provision for taxes and income tax penalties in other expenses. The table below presents the components of the provision for taxes. Year Ended December $ in millions 2017 2016 2015 Current taxes U.S. federal $ 320 $1,032 $1,116 State and local 64 139 (12 ) Non-U.S. 1,004 1,184 1,166 Total current tax expense 1,388 2,355 2,270 Deferred taxes U.S. federal 5,083 399 397 State and local 157 51 62 Non-U.S. 218 101 (34 ) Total deferred tax expense 5,458 551 425 Provision for taxes $6,846 $2,906 $2,695 In the table above: • State and local current taxes includes the impact of settlements of state and local examinations. • U.S. federal deferred tax expense includes the estimated impact of Tax Legislation. The table below presents a reconciliation of the U.S. federal statutory income tax rate to the firm’s effective income tax rate. Year Ended December 2017 2016 2015 U.S. federal statutory income tax rate 35.0% 35.0% 35.0% State and local taxes, net of U.S. federal income tax effects 1.5% 0.9% 0.3% ASU No. 2016-09 tax benefits on settlement share-based (6.4)% – – Non-U.S. (6.3)% (6.7)% (12.1)% Tax credits (2.1)% (2.0)% (1.7)% Tax-exempt (0.2)% (0.3)% (0.7)% Tax Legislation — repatriation tax 29.8% – – Tax Legislation — remeasurement of deferred tax assets 9.7% – – Non-deductible 0.5% 1.0% 10.2% Other – 0.3% (0.3)% Effective income tax rate 61.5% 28.2% 30.7% In the table above: • Non-U.S. • State and local taxes, net of U.S. federal income tax effects includes the impact of settlements of state and local examinations. • Substantially all of the non-deductible Deferred Income Taxes Deferred income taxes reflect the net tax effects of temporary differences between the financial reporting and tax bases of assets and liabilities. These temporary differences result in taxable or deductible amounts in future years and are measured using the tax rates and laws that will be in effect when such differences are expected to reverse. Valuation allowances are established to reduce deferred tax assets to the amount that more likely than not will be realized and primarily relate to the ability to utilize losses in various tax jurisdictions. Tax assets and liabilities are presented as a component of other assets and other liabilities and accrued expenses, respectively. The table below presents the significant components of deferred tax assets and liabilities, excluding the impact of netting within tax jurisdictions. As of December $ in millions 2017 2016 Deferred tax assets Compensation and benefits $1,233 $2,461 ASC 740 asset related to unrecognized tax benefits 75 231 Non-U.S. – 967 Net operating losses 428 427 Occupancy-related 67 100 Other comprehensive income-related 408 757 Tax credits carryforward 1,006 – Other, net 113 394 Subtotal 3,330 5,337 Valuation allowance (156 ) (115 ) Total deferred tax assets $3,174 $5,222 Deferred tax liabilities Depreciation and amortization $ 826 $1,200 Tax Legislation — repatriation tax 3,114 – Non-U.S. 180 – Unrealized gains 742 342 Total deferred tax liabilities $4,862 $1,542 The firm has recorded deferred tax assets of $428 million and $427 million as of December 2017 and December 2016, respectively, in connection with U.S. federal, state and local and foreign net operating loss carryforwards. The firm also recorded a valuation allowance of $128 million and $67 million as of December 2017 and December 2016, respectively, related to these net operating loss carryforwards. As of December 2017, the U.S. federal, state and local, and foreign net operating loss carryforwards were $268 million, $1.33 billion and $1.23 billion, respectively. If not utilized, the U.S. federal, state and local, and foreign net operating loss carryforwards will begin to expire in 2018. If these carryforwards expire, they will not have a material impact on the firm’s results of operations. As of December 2017, the foreign tax credit carryforwards were $446 million, the general business credit carryforwards were $533 million and the state and local tax credit carryforwards were $27 million. If not utilized, the foreign tax credit carryforward will begin to expire in 2027, the general business credit carryforward will begin to expire in 2037, and the state and local tax credit carryforward will begin to expire in 2020. The firm had no capital loss carryforwards and no related net deferred income tax assets as of December 2017 and December 2016. The valuation allowance increased by $41 million during 2017 and increased by $42 million during 2016. The increases in 2017 and 2016 were primarily due to an increase in deferred tax assets from which the firm does not expect to realize any benefit. The firm permanently reinvested eligible earnings of certain foreign subsidiaries. As of December 2017, substantially all U.S. taxes were accrued on these subsidiaries’ earnings and profits as a result of Tax Legislation repatriation tax. As of December 2016, the firm did not accrue any U.S. income taxes that would arise if such earnings were repatriated, resulting in an unrecognized net deferred tax liability of $6.18 billion, attributable to reinvested earnings of $31.24 billion. Unrecognized Tax Benefits The firm recognizes tax positions in the consolidated financial statements only when it is more likely than not that the position will be sustained on examination by the relevant taxing authority based on the technical merits of the position. A position that meets this standard is measured at the largest amount of benefit that will more likely than not be realized on settlement. A liability is established for differences between positions taken in a tax return and amounts recognized in the consolidated financial statements. The accrued liability for interest expense related to income tax matters and income tax penalties was $81 million and $141 million as of December 2017 and December 2016, respectively. The firm recognized interest expense and income tax penalties of $63 million, $27 million and $17 million for 2017, 2016 and 2015, respectively. It is reasonably possible that unrecognized tax benefits could change significantly during the twelve months subsequent to December 2017 due to potential audit settlements. However, at this time it is not possible to estimate any potential change. The table below presents the changes in the liability for unrecognized tax benefits. This liability is included in other liabilities and accrued expenses. See Note 17 for further information. Year Ended or as of December $ in millions 2017 2016 2015 Beginning balance $ 852 $ 825 $ 871 Increases based on tax positions related to the current year 94 113 65 Increases based on tax positions related to prior years 101 188 158 Decreases based on tax positions related to prior years (128 ) (88 ) (205 ) Decreases related to settlements (255 ) (186 ) (87 ) Exchange rate fluctuations 1 – 23 Ending balance $ 665 $ 852 $ 825 Related deferred income tax asset 75 231 197 Net unrecognized tax benefit $ 590 $ 621 $ 628 Regulatory Tax Examinations The firm is subject to examination by the U.S. Internal Revenue Service (IRS) and other taxing authorities in jurisdictions where the firm has significant business operations, such as the United Kingdom, Japan, Hong Kong and various states, such as New York. The tax years under examination vary by jurisdiction. The firm does not expect completion of these audits to have a material impact on the firm’s financial condition but it may be material to operating results for a particular period, depending, in part, on the operating results for that period. The table below presents the earliest tax years that remain subject to examination by major jurisdiction. Jurisdiction As of December 2017 U.S. Federal 2011 New York State and City 2011 United Kingdom 2014 Japan 2014 Hong Kong 2011 U.S. Federal examinations of 2011 and 2012 began in 2013. The firm has been accepted into the Compliance Assurance Process program by the IRS for each of the tax years from 2013 through 2018. This program allows the firm to work with the IRS to identify and resolve potential U.S. federal tax issues before the filing of tax returns. The 2013 through 2016 tax years remain subject to post-filing review. During the fourth quarter of 2017, New York State and City examinations for the firm (excluding GS Bank USA) of fiscal 2007 through calendar 2010 were completed. The completion of these examinations did not have a material impact on the firm’s effective income tax rate. New York State and City examinations (excluding GS Bank USA) of 2011 through 2014 began in the fourth quarter of 2017. New York State and City examinations for GS Bank USA have been completed through 2014. During the first quarter of 2017, the firm concluded examinations with the Hong Kong tax authorities related to 2007 through 2015, with 2011 through 2015 subject to final review. The completion of these examinations did not have a material impact on the firm’s effective income tax rate. All years including and subsequent to the years in the table above remain open to examination by the taxing authorities. The firm believes that the liability for unrecognized tax benefits it has established is adequate in relation to the potential for additional assessments.

Business Segments

Business Segments	12 Months Ended
	Dec. 31, 2017
Segment Reporting [Abstract]
Business Segments	Note 25. Business Segments The firm reports its activities in the following four business segments: Investment Banking, Institutional Client Services, Investing & Lending and Investment Management. Basis of Presentation In reporting segments, certain of the firm’s business lines have been aggregated where they have similar economic characteristics and are similar in each of the following areas: (i) the nature of the services they provide, (ii) their methods of distribution, (iii) the types of clients they serve and (iv) the regulatory environments in which they operate. The cost drivers of the firm taken as a whole, compensation, headcount and levels of business activity, are broadly similar in each of the firm’s business segments. Compensation and benefits expenses in the firm’s segments reflect, among other factors, the overall performance of the firm, as well as the performance of individual businesses. Consequently, pre-tax The firm allocates assets (including allocations of global core liquid assets and cash, secured client financing and other assets), revenues and expenses among the four business segments. Due to the integrated nature of these segments, estimates and judgments are made in allocating certain assets, revenues and expenses. The allocation process is based on the manner in which management currently views the performance of the segments. Transactions between segments are based on specific criteria or approximate third-party rates. The table below presents the firm’s net revenues, pre-tax pre-tax Year Ended or as of December $ in millions 2017 2016 2015 Investment Banking Financial Advisory $ 3,188 $ 2,932 $ 3,470 Equity underwriting 1,243 891 1,546 Debt underwriting 2,940 2,450 2,011 Total Underwriting 4,183 3,341 3,557 Total net revenues 7,371 6,273 7,027 Operating expenses 3,526 3,437 3,713 Pre-tax $ 3,845 $ 2,836 $ 3,314 Segment assets $ 2,202 $ 1,824 $ 2,564 Institutional Client Services FICC Client Execution $ 5,299 $ 7,556 $ 7,322 Equities client execution 2,046 2,194 3,028 Commissions and fees 2,920 3,078 3,156 Securities services 1,637 1,639 1,645 Total Equities 6,603 6,911 7,829 Total net revenues 11,902 14,467 15,151 Operating expenses 9,692 9,713 13,938 Pre-tax $ 2,210 $ 4,754 $ 1,213 Segment assets $675,255 $645,689 $663,394 Investing & Lending Equity securities $ 4,578 $ 2,573 $ 3,781 Debt securities and loans 2,003 1,507 1,655 Total net revenues 6,581 4,080 5,436 Operating expenses 2,796 2,386 2,402 Pre-tax $ 3,785 $ 1,694 $ 3,034 Segment assets $226,016 $198,181 $179,428 Investment Management Management and other fees $ 5,144 $ 4,798 $ 4,887 Incentive fees 417 421 780 Transaction revenues 658 569 539 Total net revenues 6,219 5,788 6,206 Operating expenses 4,800 4,654 4,841 Pre-tax $ 1,419 $ 1,134 $ 1,365 Segment assets $ 13,303 $ 14,471 $ 16,009 Total net revenues $ 32,073 $ 30,608 $ 33,820 Total operating expenses 20,941 20,304 25,042 Total pre-tax $ 11,132 $ 10,304 $ 8,778 Total assets $916,776 $860,165 $861,395 In the table above: • Revenues and expenses directly associated with each segment are included in determining pre-tax • Net revenues in the firm’s segments include allocations of interest income and interest expense to specific securities, commodities and other positions in relation to the cash generated by, or funding requirements of, such underlying positions. Net interest is included in segment net revenues as it is consistent with the way in which management assesses segment performance. • Overhead expenses not directly allocable to specific segments are allocated ratably based on direct segment expenses. • All operating expenses have been allocated to the firm’s segments except for charitable contributions of $127 million for 2017, $114 million for 2016 and $148 million for 2015. • Total operating expenses included net provisions for litigation and regulatory proceedings of $188 million for 2017, $396 million for 2016 and $4.01 billion (of which $3.37 billion was related to the settlement agreement with the RMBS Working Group) for 2015. The table below presents the amounts of net interest income by segment included in net revenues. Year Ended December $ in millions 2017 2016 2015 Investment Banking $ – $ – $ – Institutional Client Services 1,322 1,456 2,472 Investing & Lending 1,325 880 418 Investment Management 285 251 174 Total net interest income $2,932 $2,587 $3,064 The table below presents the amounts of depreciation and amortization expense by segment included in pre-tax Year Ended December $ in millions 2017 2016 2015 Investment Banking $ 124 $ 126 $ 123 Institutional Client Services 514 489 462 Investing & Lending 314 215 253 Investment Management 200 168 153 Total depreciation and amortization $1,152 $ 998 $ 991 Geographic Information Due to the highly integrated nature of international financial markets, the firm manages its businesses based on the profitability of the enterprise as a whole. The methodology for allocating profitability to geographic regions is dependent on estimates and management judgment because a significant portion of the firm’s activities require cross-border coordination in order to facilitate the needs of the firm’s clients. Geographic results are generally allocated as follows: • Investment Banking: location of the client and investment banking team. • Institutional Client Services: FICC Client Execution and Equities (excluding Securities services): location of the market-making desk; Securities services: location of the primary market for the underlying security. • Investing & Lending: Investing: location of the investment; Lending: location of the client. • Investment Management: location of the sales team. The table below presents the total net revenues, pre-tax pre-tax Year Ended December $ in millions 2017 2016 2015 Net revenues Americas $19,405 61% $18,144 60% $19,202 56% EMEA 7,852 24% 8,040 26% 8,981 27% Asia 4,816 15% 4,424 14% 5,637 17% Total net revenues $32,073 100% $30,608 100% $33,820 100% Pre-tax Americas $ 7,119 63% $ 6,352 61% $ 3,359 37% EMEA 2,583 23% 2,883 28% 3,364 38% Asia 1,557 14% 1,183 11% 2,203 25% Subtotal 11,259 100% 10,418 100% 8,926 100% Corporate (127 ) (114 ) (148 ) Total pre-tax earnings $11,132 $10,304 $ 8,778 Net earnings Americas $ 997 23% $ 4,337 58% $ 1,587 26% EMEA 2,144 49% 2,270 30% 2,914 47% Asia 1,241 28% 870 12% 1,686 27% Subtotal 4,382 100% 7,477 100% 6,187 100% Corporate (96 ) (79 ) (104 ) Total net earnings $ 4,286 $ 7,398 $ 6,083 In the table above: • Americas net earnings included estimated income tax expense of $4.40 billion recorded in 2017 related to Tax Legislation. • Americas pre-tax • Corporate pre-tax • Substantially all of the amounts in Americas were attributable to the U.S. • Asia includes Australia and New Zealand.

Credit Concentrations

Credit Concentrations	12 Months Ended
	Dec. 31, 2017
Risks and Uncertainties [Abstract]
Credit Concentrations	Note 26. Credit Concentrations The firm’s concentrations of credit risk arise from its market making, client facilitation, investing, underwriting, lending and collateralized transactions, and cash management activities, and may be impacted by changes in economic, industry or political factors. These activities expose the firm to many different industries and counterparties, and may also subject the firm to a concentration of credit risk to a particular central bank, counterparty, borrower or issuer, including sovereign issuers, or to a particular clearing house or exchange. The firm seeks to mitigate credit risk by actively monitoring exposures and obtaining collateral from counterparties as deemed appropriate. The firm measures and monitors its credit exposure based on amounts owed to the firm after taking into account risk mitigants that management considers when determining credit risk. Such risk mitigants include netting and collateral arrangements and economic hedges, such as credit derivatives, futures and forward contracts. Netting and collateral agreements permit the firm to offset receivables and payables with such counterparties and/or enable the firm to obtain collateral on an upfront or contingent basis. The table below presents the credit concentrations in cash instruments held by the firm and included in financial instruments owned. As of December $ in millions 2017 2016 U.S. government and agency obligations $76,418 $57,657 % of total assets 8.3% 6.7% Non-U.S. $33,956 $29,381 % of total assets 3.7% 3.4% In addition, as of December 2017 and December 2016, the firm had $76.13 billion and $94.72 billion, respectively, of cash deposits held at central banks (included in cash and cash equivalents), of which $50.86 billion and $74.24 billion, respectively, was held at the Federal Reserve Bank of New York. As of both December 2017 and December 2016, the firm did not have credit exposure to any other counterparty that exceeded 2% of total assets. Collateral obtained by the firm related to derivative assets is principally cash and is held by the firm or a third-party custodian. Collateral obtained by the firm related to resale agreements and securities borrowed transactions is primarily U.S. government and agency obligations and non-U.S. The table below presents U.S. government and agency obligations and non-U.S. As of December $ in millions 2017 2016 U.S. government and agency obligations $96,905 $89,721 Non-U.S. $92,850 $80,234 In the table above: • Non-U.S. • Given that the firm’s primary credit exposure on such transactions is to the counterparty to the transaction, the firm would be exposed to the collateral issuer only in the event of counterparty default.

Legal Proceedings

Legal Proceedings	12 Months Ended
	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Legal Proceedings	Note 27. Legal Proceedings The firm is involved in a number of judicial, regulatory and arbitration proceedings (including those described below) concerning matters arising in connection with the conduct of the firm’s businesses. Many of these proceedings are in early stages, and many of these cases seek an indeterminate amount of damages. Under ASC 450, an event is “reasonably possible” if “the chance of the future event or events occurring is more than remote but less than likely” and an event is “remote” if “the chance of the future event or events occurring is slight.” Thus, references to the upper end of the range of reasonably possible loss for cases in which the firm is able to estimate a range of reasonably possible loss mean the upper end of the range of loss for cases for which the firm believes the risk of loss is more than slight. With respect to matters described below for which management has been able to estimate a range of reasonably possible loss where (i) actual or potential plaintiffs have claimed an amount of money damages, (ii) the firm is being, or threatened to be, sued by purchasers in a securities offering and is not being indemnified by a party that the firm believes will pay the full amount of any judgment, or (iii) the purchasers are demanding that the firm repurchase securities, management has estimated the upper end of the range of reasonably possible loss as being equal to (a) in the case of (i), the amount of money damages claimed, (b) in the case of (ii), the difference between the initial sales price of the securities that the firm sold in such offering and the estimated lowest subsequent price of such securities prior to the action being commenced and (c) in the case of (iii), the price that purchasers paid for the securities less the estimated value, if any, as of December 2017 of the relevant securities, in each of cases (i), (ii) and (iii), taking into account any other factors believed to be relevant to the particular matter or matters of that type. As of the date hereof, the firm has estimated the upper end of the range of reasonably possible aggregate loss for such matters and for any other matters described below where management has been able to estimate a range of reasonably possible aggregate loss to be approximately $1.5 billion in excess of the aggregate reserves for such matters. Management is generally unable to estimate a range of reasonably possible loss for matters other than those included in the estimate above, including where (i) actual or potential plaintiffs have not claimed an amount of money damages, except in those instances where management can otherwise determine an appropriate amount, (ii) matters are in early stages, (iii) matters relate to regulatory investigations or reviews, except in those instances where management can otherwise determine an appropriate amount, (iv) there is uncertainty as to the likelihood of a class being certified or the ultimate size of the class, (v) there is uncertainty as to the outcome of pending appeals or motions, (vi) there are significant factual issues to be resolved, and/or (vii) there are novel legal issues presented. For example, the firm’s potential liabilities with respect to future mortgage-related “put-back” Mortgage-Related Matters Beginning in April 2010, a number of purported securities law class actions were filed in the U.S. District Court for the Southern District of New York challenging the adequacy of Group Inc.’s public disclosure of, among other things, the firm’s activities in the CDO market, and the firm’s conflict of interest management. The consolidated amended complaint filed on July 25, 2011, which names as defendants Group Inc. and certain current and former officers and employees of Group Inc. and its affiliates, generally alleges violations of Sections 10(b) and 20(a) of the Exchange Act and seeks unspecified damages. On January 12, 2018, the U.S. Court of Appeals for the Second Circuit vacated the district court’s class certification order and remanded for reconsideration. In June 2012, the Board received a demand from a shareholder that the Board investigate and take action relating to the firm’s mortgage-related activities and to stock sales by certain directors and executives of the firm. On February 15, 2013, this shareholder filed a putative shareholder derivative action in New York Supreme Court, New York County, against Group Inc. and certain current or former directors and employees, based on these activities and stock sales. The derivative complaint includes allegations of breach of fiduciary duty, unjust enrichment, abuse of control, gross mismanagement and corporate waste, and seeks, among other things, unspecified monetary damages, disgorgement of profits and certain corporate governance and disclosure reforms. On May 28, 2013, Group Inc. informed the shareholder that the Board completed its investigation and determined to refuse the demand. On June 20, 2013, the shareholder made a books and records demand requesting materials relating to the Board’s determination. The parties have agreed to stay proceedings in the putative derivative action pending resolution of the books and records demand. In addition, the Board has received books and records demands from several shareholders for materials relating to, among other subjects, the firm’s mortgage servicing and foreclosure activities, participation in federal programs providing assistance to financial institutions and homeowners, loan sales to Fannie Mae and Freddie Mac, mortgage-related activities and conflicts management. The firm has entered into agreements with U.S. Bank National Association to toll the relevant statute of limitations with respect to claims for repurchase of residential mortgage loans based on alleged breaches of representations related to $1.7 billion original notional face amount of securitizations issued by trusts for which U.S. Bank National Association acts as trustee. The firm has received subpoenas or requests for information from, and is engaged in discussions with, certain regulators and law enforcement agencies with which it has not entered into settlement agreements as part of inquiries or investigations relating to mortgage-related matters. Director Compensation-Related Litigation On May 9, 2017, Group Inc. and certain of its current and former directors were named as defendants in a purported direct and derivative shareholder action in the Court of Chancery of the State of Delaware (a similar purported derivative action, filed in June 2015, alleging excessive director compensation over the period 2012 to 2014 was voluntarily dismissed without prejudice in December 2016). The new complaint alleges that excessive compensation has been paid to the non-employee Currencies-Related Litigation GS&Co. and Group Inc. are among the defendants named in putative class actions filed in the U.S. District Court for the Southern District of New York beginning in September 2016 on behalf of putative indirect purchasers of foreign exchange instruments. The consolidated amended complaint, filed on June 30, 2017, generally alleges a conspiracy to manipulate the foreign currency exchange markets and asserts claims under federal and state antitrust laws and state consumer protection laws and seeks injunctive relief, as well as treble damages in an unspecified amount. Defendants moved to dismiss on August 11, 2017. Financial Advisory Services Group Inc. and certain of its affiliates are from time to time parties to various civil litigation and arbitration proceedings and other disputes with clients and third parties relating to the firm’s financial advisory activities. These claims generally seek, among other things, compensatory damages and, in some cases, punitive damages, and in certain cases allege that the firm did not appropriately disclose or deal with conflicts of interest. Underwriting Litigation Firm affiliates are among the defendants in a number of proceedings in connection with securities offerings. In these proceedings, including those described below, the plaintiffs assert class action or individual claims under federal and state securities laws and in some cases other applicable laws, allege that the offering documents for the securities that they purchased contained material misstatements and omissions, and generally seek compensatory and rescissory damages in unspecified amounts. Certain of these proceedings involve additional allegations. Cobalt International Energy. Cobalt International Energy, Inc. (Cobalt), certain of its officers and directors (including employees of affiliates of Group Inc. who served as directors of Cobalt), affiliates of shareholders of Cobalt (including Group Inc.) and the underwriters (including GS&Co.) for certain offerings of Cobalt’s securities are defendants in a putative securities class action filed on November 30, 2014 in the U.S. District Court for the Southern District of Texas. The second consolidated amended complaint, filed on March 15, 2017, relates to a $1.67 billion February 2012 offering of Cobalt common stock, a $1.38 billion December 2012 offering of Cobalt’s convertible notes, a $1.00 billion January 2013 offering of Cobalt’s common stock, a $1.33 billion May 2013 offering of Cobalt’s common stock, and a $1.30 billion May 2014 offering of Cobalt’s convertible notes. The consolidated amended complaint alleges that, among others, Group Inc. and GS&Co. are liable as controlling persons with respect to all five offerings, and that the shareholder affiliates (including Group Inc.) are liable for the sale of Cobalt common stock on the basis of inside information. The consolidated amended complaint also seeks damages from GS&Co. in connection with its acting as an underwriter of 16,594,500 shares of common stock representing an aggregate offering price of approximately $465 million, $690 million principal amount of convertible notes, and approximately $508 million principal amount of convertible notes in the February 2012, December 2012 and May 2014 offerings, respectively, for an aggregate offering price of approximately $1.66 billion. On January 19, 2016, the court granted, with leave to replead, the underwriter defendants’ motions to dismiss as to claims by plaintiffs who purchased Cobalt securities after April 30, 2013, but denied the motions to dismiss in all other respects. On June 15, 2017, the court granted the plaintiffs’ motion for class certification and denied certain of the shareholder affiliates’ motions (including Group Inc.) to dismiss the claim alleging sales based on inside information. On August 4, 2017, the U.S. Court of Appeals for the Fifth Circuit granted defendants’ petition for interlocutory review of the class certification order. On August 23, 2017, the district court denied the defendants’ motion for reconsideration of certain aspects of the class certification order. The district court and the Fifth Circuit denied defendants’ request to stay discovery pending resolution of the Fifth Circuit proceeding. On December 14, 2017, Cobalt filed for Chapter 11 bankruptcy. Cobalt, certain of its officers and directors (including employees of affiliates of Group Inc. who served as directors of Cobalt), certain shareholders of Cobalt (including funds affiliated with Group Inc.), and affiliates of these shareholders (including Group Inc.) are defendants in putative shareholder derivative actions filed on May 6, 2016 and November 29, 2016 in Texas District Court, Harris County. As to the director and officer defendants (including employees of affiliates of Group Inc. who served as directors of Cobalt), the petitions generally allege that they breached their fiduciary duties under state law by making materially false and misleading statements concerning Cobalt. As to the shareholder defendants and their affiliates (including Group Inc. and several affiliated funds), the original petition also alleges that they breached their fiduciary duties by selling Cobalt securities in the common stock offerings described above on the basis of inside information. The petitions seek, among other things, unspecified monetary damages and disgorgement of proceeds from the sale of Cobalt common stock. On March 6, 2017, the court denied defendants’ motion to dismiss the May petition as to the shareholder defendants and their affiliates (including Group Inc. and its affiliated funds). Defendants moved to dismiss the November petition on January 30, 2017. Adeptus Health. GS&Co. is among the underwriters named as defendants in several putative securities class actions, filed beginning in October 2016 and consolidated in the U.S. District Court for the Eastern District of Texas. In addition to the underwriters, the defendants include certain of Adeptus Health Inc.’s (Adeptus) past and present directors and officers as well as its principal private equity investor. As to the underwriters, the consolidated amended complaint, filed on November 21, 2017, relates to the $124 million June 2014 initial public offering, the $154 million May 2015 secondary equity offering, the $411 million July 2015 secondary equity offering, and the $175 million June 2016 secondary equity offering. GS&Co. underwrote 1.69 million shares of common stock in the June 2014 initial public offering representing an aggregate offering price of approximately $37 million, 962,378 shares of common stock in the May 2015 offering representing an aggregate offering price of approximately $61 million, 1.76 million shares of common stock in the July 2015 offering representing an aggregate offering price of approximately $184 million, and all the shares of common stock in the June 2016 offering representing an aggregate offering price of approximately $175 million. On April 19, 2017, Adeptus filed for Chapter 11 bankruptcy. The defendants filed motions to dismiss on February 5, 2018. TerraForm Global. GS&Co. is among the underwriters, placement agents and initial purchasers named as defendants in several putative class actions and individual actions filed beginning in October 2015 relating to the $675 million July 2015 initial public offering of the common stock of TerraForm Global, Inc. (TerraForm Global), the June 2015 private placement of $335 million of TerraForm Global Class D units, and the August 2015 Rule 144A offering of $810 million principal amount of TerraForm Global senior notes. On December 20, 2017, the parties reached a definitive settlement in the individual actions relating to TerraForm Global’s offerings, which resolved all claims without any contribution by GS&Co. On the same date, the U.S. District Court for the Southern District of New York preliminarily approved a settlement funded by TerraForm Global in the class action relating to TerraForm Global’s initial public offering, which would resolve the litigation. GS&Co., as underwriter, sold 2,340,000 shares of TerraForm Global common stock in the initial public offering representing an aggregate offering price of approximately $35 million. GS&Co., as initial purchaser, sold approximately $49 million principal amount of TerraForm Global senior notes in the Rule 144A offering. SunEdison. GS&Co. is among the underwriters named as defendants in several putative class actions and individual actions filed beginning in March 2016 relating to the August 2015 public offering of $650 million of SunEdison, Inc. (SunEdison) convertible preferred stock. On April 21, 2016, SunEdison filed for Chapter 11 bankruptcy. The pending cases were transferred to the U.S. District Court for the Southern District of New York and on March 17, 2017, certain plaintiffs filed an amended complaint. The defendants also include certain of SunEdison’s directors and officers. GS&Co., as underwriter, sold 138,890 shares of SunEdison convertible preferred stock in the offering, representing an aggregate offering price of approximately $139 million. Valeant Pharmaceuticals International. GS&Co. and Goldman Sachs Canada Inc. (GS Canada) are among the underwriters and initial purchasers named as defendants in a putative class action filed on March 2, 2016 in the Superior Court of Quebec, Canada. In addition to the underwriters and initial purchasers, the defendants include Valeant Pharmaceuticals International, Inc. (Valeant), certain directors and officers of Valeant and Valeant’s auditor. As to GS&Co. and GS Canada, the complaint relates to the June 2013 public offering of $2.3 billion of common stock, the June 2013 Rule 144A offering of $3.2 billion principal amount of senior notes, and the November 2013 Rule 144A offering of $900 million principal amount of senior notes. The complaint asserts claims under the Quebec Securities Act and the Civil Code of Quebec. On August 29, 2017, the court certified a class that includes only non-U.S. GS&Co. and GS Canada, as sole underwriters, sold 5,334,897 shares of common stock in the June 2013 offering to non-U.S. non-U.S. Snap Inc. GS&Co. is among the underwriters named as defendants in putative securities class actions pending in California Superior Court, County of Los Angeles, California Superior Court, County of San Mateo and the U.S. District Court for the Central District of California beginning in May 2017, relating to Snap Inc.’s $3.91 billion March 2017 initial public offering. In addition to the underwriters, the defendants include Snap Inc. and certain of its officers and directors. GS&Co. underwrote 57,040,000 shares of common stock representing an aggregate offering price of approximately $970 million. Defendants moved to dismiss the federal court action on December 1, 2017. Investment Management Services Group Inc. and certain of its affiliates are parties to various civil litigation and arbitration proceedings and other disputes with clients relating to losses allegedly sustained as a result of the firm’s investment management services. These claims generally seek, among other things, restitution or other compensatory damages and, in some cases, punitive damages. Interest Rate Swap Antitrust Litigation Group Inc., GS&Co., GSI, GS Bank USA and Goldman Sachs Financial Markets, L.P. (GSFM) are among the defendants named in a putative antitrust class action relating to the trading of interest rate swaps, filed in November 2015 and consolidated in the U.S. District Court for the Southern District of New York. The same Goldman Sachs entities also are among the defendants named in an antitrust action relating to the trading of interest rate swaps filed in the U.S. District Court for the Southern District of New York in April 2016 by two operators of swap execution facilities and certain of their affiliates. These actions have been consolidated for pretrial proceedings. The second consolidated amended complaint in both actions, filed on December 9, 2016, generally asserts claims under federal antitrust law and state common law in connection with an alleged conspiracy among the defendants to preclude exchange trading of interest rate swaps. The complaint in the individual action also asserts claims under state antitrust law. The complaints seek declaratory and injunctive relief, as well as treble damages in an unspecified amount. Defendants moved to dismiss both actions on January 20, 2017. On July 28, 2017, the district court issued a decision dismissing the state common law claims asserted by the plaintiffs in the individual action and otherwise limiting the antitrust claims in both actions and the state common law claim in the putative class action to the period from 2013 to 2016. Securities Lending Antitrust Litigation Group Inc. and GS&Co. are among the defendants named in a putative antitrust class action and an individual action relating to securities lending practices filed in the U.S. District Court for the Southern District of New York beginning in August 2017. The complaints generally assert claims under federal antitrust law and state common law in connection with an alleged conspiracy among the defendants to preclude the development of electronic platforms for securities lending transactions. The individual complaint also asserts claims for tortious interference with business relations and under state trade practices law. The complaints seek declaratory and injunctive relief, as well as treble damages and restitution in unspecified amounts. Group Inc. was voluntarily dismissed from the putative class action on January 26, 2018. Defendants moved to dismiss the class action complaint on January 26, 2018. Credit Default Swap Antitrust Litigation Group Inc., GS&Co., GSI, GS Bank USA and GSFM are among the defendants named in an antitrust action relating to the trading of credit default swaps filed in the U.S. District Court for the Southern District of New York on June 8, 2017 by the operator of a swap execution facility and certain of its affiliates. The complaint generally asserts claims under federal and state antitrust laws and state common law in connection with an alleged conspiracy among the defendants to preclude trading of credit default swaps on the plaintiffs’ swap execution facility. The complaint seeks declaratory and injunctive relief, as well as treble damages in an unspecified amount. Defendants moved to dismiss on September 11, 2017. Commodities-Related Litigation GSI is among the defendants named in putative class actions relating to trading in platinum and palladium, filed beginning on November 25, 2014 and most recently amended on May 15, 2017, in the U.S. District Court for the Southern District of New York. The amended complaint generally alleges that the defendants violated federal antitrust laws and the Commodity Exchange Act in connection with an alleged conspiracy to manipulate a benchmark for physical platinum and palladium prices and seek declaratory and injunctive relief, as well as treble damages in an unspecified amount. Defendants moved to dismiss the third consolidated amended complaint on July 21, 2017. U.S. Treasury Securities Litigation GS&Co. is among the primary dealers named as defendants in several putative class actions relating to the market for U.S. Treasury securities, filed beginning in July 2015 and consolidated in the U.S. District Court for the Southern District of New York. GS&Co. is also among the primary dealers named as defendants in a similar individual action filed in the U.S. District Court for the Southern District of New York on August 25, 2017. The consolidated class action complaint, filed on December 29, 2017, generally alleges that the defendants violated antitrust laws in connection with an alleged conspiracy to manipulate the when-issued market and auctions for U.S. Treasury securities and that certain defendants, including GS&Co., colluded to preclude trading of U.S. Treasury securities on electronic trading platforms in order to impede competition in the bidding process. The individual action alleges a similar conspiracy regarding manipulation of the when-issued market and auctions, as well as related futures and options in violation of the Commodity Exchange Act. The complaints seek declaratory and injunctive relief, treble damages in an unspecified amount and restitution. Employment-Related Matters On September 15, 2010, a putative class action was filed in the U.S. District Court for the Southern District of New York by three female former employees alleging that Group Inc. and GS&Co. have systematically discriminated against female employees in respect of compensation, promotion, assignments, mentoring and performance evaluations. The complaint alleges a class consisting of all female employees employed at specified levels in specified areas by Group Inc. and GS&Co. since July 2002, and asserts claims under federal and New York City discrimination laws. The complaint seeks class action status, injunctive relief and unspecified amounts of compensatory, punitive and other damages. On July 17, 2012, the district court issued a decision granting in part Group Inc.’s and GS&Co.’s motion to strike certain of plaintiffs’ class allegations on the ground that plaintiffs lacked standing to pursue certain equitable remedies and denying Group Inc.’s and GS&Co.’s motion to strike plaintiffs’ class allegations in their entirety as premature. On March 21, 2013, the U.S. Court of Appeals for the Second Circuit held that arbitration should be compelled with one of the named plaintiffs, who as a managing director was a party to an arbitration agreement with the firm. On March 10, 2015, the magistrate judge to whom the district judge assigned the remaining plaintiffs’ May 2014 motion for class certification recommended that the motion be denied in all respects. On August 3, 2015, the magistrate judge granted the plaintiffs’ motion to intervene two female individuals, one of whom was employed by the firm as of September 2010 and the other of whom ceased to be an employee of the firm subsequent to the magistrate judge’s decision. On August 30, 2017, the district court vacated that portion of the magistrate judge’s March 10, 2015 decision that recommended denial of plaintiffs’ motion for certification of an injunctive and declaratory judgment class. 1Malaysia Development Berhad (1MDB)-Related Matters The firm has received subpoenas and requests for documents and information from various governmental and regulatory bodies and self-regulatory organizations as part of investigations and reviews relating to financing transactions and other matters involving 1MDB, a sovereign wealth fund in Malaysia. The firm is cooperating with all such governmental and regulatory investigations and reviews. Regulatory Investigations and Reviews and Related Litigation Group Inc. and certain of its affiliates are subject to a number of other investigations and reviews by, and in some cases have received subpoenas and requests for documents and information from, various governmental and regulatory bodies and self-regulatory organizations and litigation and shareholder requests relating to various matters relating to the firm’s businesses and operations, including: • The 2008 financial crisis; • The public offering process; • The firm’s investment management and financial advisory services; • Conflicts of interest; • Research practices, including research independence and interactions between research analysts and other firm personnel, including investment banking personnel, as well as third parties; • Transactions involving government-related financings and other matters, municipal securities, including wall-cross procedures and conflict of interest disclosure with respect to state and municipal clients, the trading and structuring of municipal derivative instruments in connection with municipal offerings, political contribution rules, municipal advisory services and the possible impact of credit default swap transactions on municipal issuers; • The offering, auction, sales, trading and clearance of corporate and government securities, currencies, commodities and other financial products and related sales and other communications and activities, as well as the firm’s supervision and controls relating to such activities, including compliance with the SEC’s short sale rule, algorithmic, high-frequency and quantitative trading, the firm’s U.S. alternative trading system (dark pool), futures trading, options trading, when-issued trading, transaction reporting, technology systems and controls, securities lending practices, trading and clearance of credit derivative instruments and interest rate swaps, commodities activities and metals storage, private placement practices, allocations of and trading in securities, and trading activities and communications in connection with the establishment of benchmark rates, such as currency rates; • Compliance with the U.S. Foreign Corrupt Practices Act; • The firm’s hiring and compensation practices; • The firm’s system of risk management and controls; and • Insider trading, the potential misuse and dissemination of material nonpublic information regarding corporate and governmental developments and the effectiveness of the firm’s insider trading controls and information barriers. The firm is cooperating with all such governmental and regulatory investigations and reviews.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2017
Compensation and Retirement Disclosure [Abstract]
Employee Benefit Plans	Note 28. Employee Benefit Plans The firm sponsors various pension plans and certain other postretirement benefit plans, primarily healthcare and life insurance. The firm also provides certain benefits to former or inactive employees prior to retirement. Defined Benefit Pension Plans and Postretirement Plans Employees of certain non-U.S. non-U.S. The firm also maintains a defined benefit pension plan for substantially all U.S. employees hired prior to November 1, 2003. As of November 2004, this plan was closed to new participants and frozen for existing participants. In addition, the firm maintains unfunded postretirement benefit plans that provide medical and life insurance for eligible retirees and their dependents covered under these programs. These plans do not have a material impact on the firm’s consolidated results of operations. The firm recognizes the funded status of its defined benefit pension and postretirement plans, measured as the difference between the fair value of the plan assets and the benefit obligation, in the consolidated statements of financial condition. As of December 2017, other assets and other liabilities and accrued expenses included $346 million (related to overfunded pension plans) and $606 million, respectively, related to these plans. As of December 2016, other assets and other liabilities and accrued expenses included $72 million (related to overfunded pension plans) and $592 million, respectively, related to these plans. Defined Contribution Plans The firm contributes to employer-sponsored U.S. and non-U.S.

Employee Incentive Plans

Employee Incentive Plans	12 Months Ended
	Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Employee Incentive Plans	Note 29. Employee Incentive Plans The cost of employee services received in exchange for a share-based award is generally measured based on the grant-date fair value of the award. Share-based awards that do not require future service (i.e., vested awards, including awards granted to retirement-eligible employees) are expensed immediately. Share-based awards that require future service are amortized over the relevant service period. Effective January 2017, forfeitures are recorded when they occur. Prior to January 2017, expected forfeitures were estimated and recorded over the vesting period. See Note 3 for information about the adoption of ASU No. 2016-09. Cash dividend equivalents paid on outstanding RSUs are charged to retained earnings. If RSUs that require future service are forfeited, the related dividend equivalents originally charged to retained earnings are reclassified to compensation expense in the period in which forfeiture occurs. The firm generally issues new shares of common stock upon delivery of share-based awards. In certain cases, primarily related to conflicted employment (as outlined in the applicable award agreements), the firm may cash settle share-based compensation awards accounted for as equity instruments. For these awards, whose terms allow for cash settlement, additional paid-in Stock Incentive Plan The firm sponsors a stock incentive plan, The Goldman Sachs Amended and Restated Stock Incentive Plan (2015) (2015 SIP), which provides for grants of RSUs, restricted stock, dividend equivalent rights, incentive stock options, nonqualified stock options, stock appreciation rights, and other share-based awards, each of which may be subject to performance conditions. On May 21, 2015, shareholders approved the 2015 SIP. The 2015 SIP replaced The Goldman Sachs Amended and Restated Stock Incentive Plan (2013) (2013 SIP) previously in effect, and applies to awards granted on or after the date of approval. As of December 2017, 73.0 million shares were available for grant under the 2015 SIP. If any shares of common stock underlying awards granted under the 2015 SIP or 2013 SIP are not delivered due to forfeiture, termination or cancellation or are surrendered or withheld, those shares will again become available to be delivered under the 2015 SIP. Shares available for grant are also subject to adjustment for certain changes in corporate structure as permitted under the 2015 SIP. The 2015 SIP is scheduled to terminate on the date of the annual meeting of shareholders that occurs in 2019. Restricted Stock Units The firm grants RSUs (including RSUs subject to performance conditions) to employees under the 2015 SIP, which are generally valued based on the closing price of the underlying shares on the date of grant after taking into account a liquidity discount for any applicable post-vesting and delivery transfer restrictions. RSUs generally vest and underlying shares of common stock deliver (net of required withholding tax) as outlined in the applicable award agreements. Employee award agreements generally provide that vesting is accelerated in certain circumstances, such as on retirement, death, disability and conflicted employment. Delivery of the underlying shares of common stock, which generally occurs over a three-year period, is conditioned on the grantees satisfying certain vesting and other requirements outlined in the award agreements. The table below presents the activity related to RSUs. Restricted Stock Units Outstanding Weighted Average Grant-Date Fair Value of Units Outstanding Future No Future Future No Future Outstanding, December 2016 5,623,239 22,202,431 $147.25 $145.97 Granted 3,764,395 5,235,283 $208.24 $205.91 Forfeited (466,715 ) (260,762 ) $167.02 $164.06 Delivered – (17,811,461 ) $ – $151.72 Vested (4,797,337 ) 4,797,337 $162.88 $162.88 Outstanding, December 2017 4,123,582 14,162,828 $182.50 $166.30 In the table above: • The weighted average grant-date fair value of RSUs granted during 2017, 2016 and 2015 was $206.88, $135.92 and $160.19, respectively. The fair value of the RSUs granted during 2017, 2016 and 2015 includes a liquidity discount of 10.7%, 10.5% and 9.2%, respectively, to reflect post-vesting and delivery transfer restrictions, generally of up to 4 years. • The aggregate fair value of awards that vested during 2017, 2016 and 2015 was $2.14 billion, $2.26 billion and $2.40 billion, respectively. • Delivered RSUs include RSUs that were cash settled. • RSUs outstanding include restricted stock subject to future service requirements as of December 2017 and December 2016 of 3,298 and 39,957 shares, respectively. • RSUs outstanding include 62,023 RSUs subject to performance conditions and not subject to future service requirements as of December 2017. There were no such RSUs outstanding as of December 2016. In relation to 2017 year-end, Stock Options Stock options generally vest as outlined in the applicable stock option agreement. In general, options expire on the tenth anniversary of the grant date, although they may be subject to earlier termination or cancellation under certain circumstances in accordance with the terms of the applicable stock option agreement and the SIP in effect at the time of grant. As of December 2017 and December 2016, there were 2.10 million and 7.96 million options outstanding, respectively, all of which were exercisable. The options outstanding as of December 2017, all of which were granted in 2008 with an exercise price of $78.78, had an aggregate intrinsic value of $370 million and a remaining life of 1 year. The options outstanding as of December 2016 had a weighted average exercise price of $123.36, an aggregate intrinsic value of $924 million and a weighted average remaining life of 1.61 years. Options outstanding as of December 2016 consisted of 5.13 million options with an exercise price of $78.78 and a remaining life of 2.00 years, and 2.83 million options with an exercise price of $204.16 and a remaining life of 0.92 years. During 2017, 5.86 million options were exercised with a weighted average exercise price of $139.35. The total intrinsic value of options exercised during 2017, 2016 and 2015 was $589 million, $436 million and $531 million, respectively. The table below presents the share-based compensation and the related excess tax benefit. Year Ended December $ in millions 2017 2016 2015 Share-based compensation $1,812 $2,170 $2,304 Excess net tax benefit for options exercised $ 139 $ 79 $ 134 Excess net tax benefit for share-based awards $ 719 $ 147 $ 406 In the table above, excess net tax benefit for share-based awards includes the net tax benefit on dividend equivalents paid on RSUs and the delivery of common stock underlying share-based awards, as well as the excess net tax benefit for options exercised. Following the adoption of ASU No. 2016-09 paid-in As of December 2017, there was $386 million of total unrecognized compensation cost related to non-vested

Parent Company

Parent Company	12 Months Ended
	Dec. 31, 2017
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Parent Company	Note 30. Parent Company Group Inc. — Condensed Statements of Earnings Year Ended December $ in millions 2017 2016 2015 Revenues Dividends from subsidiaries and other affiliates: Bank $ 550 $ 53 $ 32 Nonbank 11,016 5,465 3,181 Other revenues (384 ) 155 (132 ) Total non-interest 11,182 5,673 3,081 Interest income 4,638 4,140 3,519 Interest expense 5,978 4,543 4,165 Net interest loss (1,340 ) (403 ) (646 ) Net revenues, including net interest loss 9,842 5,270 2,435 Operating expenses Compensation and benefits 330 343 498 Other expenses 428 332 188 Total operating expenses 758 675 686 Pre-tax 9,084 4,595 1,749 Provision/(benefit) for taxes 3,404 (518 ) (828 ) Undistributed earnings/(loss) of subsidiaries and other affiliates (1,394 ) 2,285 3,506 Net earnings 4,286 7,398 6,083 Preferred stock dividends 601 311 515 Net earnings applicable to common shareholders $ 3,685 $7,087 $5,568 Supplemental Disclosures: Dividends from bank subsidiaries included cash dividends of $525 million, $32 million and $14 million for 2017, 2016 and 2015, respectively. Dividends from nonbank subsidiaries and other affiliates included cash dividends of $7.98 billion, $3.46 billion and $2.29 billion for 2017, 2016 and 2015, respectively. Interest expense included $1.05 billion, $201 million and $187 million of interest expense with subsidiaries for 2017, 2016 and 2015, respectively. Group Inc.’s provision/(benefit) for taxes for 2017 included substantially all of the firm’s $4.40 billion estimated income tax expense related to Tax Legislation. See Note 24 for further information on Tax Legislation. Group Inc. — Condensed Statements of Financial Condition As of December $ in millions 2017 2016 Assets Cash and cash equivalents: With third-party banks $ 38 $ 81 With subsidiary bank – 3,000 Loans to and receivables from subsidiaries: Bank 721 9,131 Nonbank 236,050 179,899 Investments in subsidiaries and other affiliates: Bank 26,599 25,571 Nonbank 67,279 67,203 Financial instruments owned (at fair value) 10,248 4,524 Other assets 5,898 6,273 Total assets $346,833 $295,682 Liabilities and shareholders’ equity Payables to subsidiaries $ 1,005 $ 875 Financial instruments sold, but not yet purchased (at fair value) 254 775 Unsecured short-term borrowings: With third parties (includes $2,484 31,871 27,159 With subsidiaries 25,699 999 Unsecured long-term borrowings: With third parties (includes $18,207 190,502 172,164 With subsidiaries 11,068 5,233 Other liabilities and accrued expenses 4,191 1,584 Total liabilities 264,590 208,789 Commitments, contingencies and guarantees Shareholders’ equity Preferred stock 11,853 11,203 Common stock 9 9 Share-based awards 2,777 3,914 Additional paid-in 53,357 52,638 Retained earnings 91,519 89,039 Accumulated other comprehensive loss (1,880 ) (1,216 ) Stock held in treasury, at cost (75,392 ) (68,694 ) Total shareholders’ equity 82,243 86,893 Total liabilities and shareholders’ equity $346,833 $295,682 Supplemental Disclosures: Goldman Sachs Funding LLC (Funding IHC), a wholly-owned, direct subsidiary of Group Inc., has provided Group Inc. with a committed line of credit that allows Group Inc. to draw sufficient funds to meet its cash needs in the ordinary course of business. Financial instruments owned included $570 million and $1.08 billion of derivative contracts with subsidiaries as of December 2017 and December 2016, respectively. As of December 2017, unsecured long-term borrowings with subsidiaries by maturity date are $10.55 billion in 2019, $121 million in 2020, $58 million in 2021, $21 million in 2022, and $323 million in 2023-thereafter. Group Inc. — Condensed Statements of Cash Flows Year Ended December $ in millions 2017 2016 2015 Cash flows from operating activities Net earnings $ 4,286 $ 7,398 $ 6,083 Adjustments to reconcile net earnings to net cash provided by operating activities: Undistributed (earnings)/loss of subsidiaries and other affiliates 1,394 (2,285 ) (3,506 ) Depreciation and amortization 56 52 50 Deferred income taxes 4,358 134 86 Share-based compensation 152 193 178 Loss/(gain) related to extinguishment of subordinated borrowings (114 ) 3 (34 ) Changes in operating assets and liabilities: Financial instruments owned (excluding available-for-sale (309 ) (1,580 ) (620 ) Financial instruments sold, but not yet purchased (521 ) 332 274 Other, net (757 ) 337 1,555 Net cash provided by operating activities 8,545 4,584 4,066 Cash flows from investing activities Purchase of property, leasehold improvements and equipment (66 ) (79 ) (33 ) Issuances of short-term loans to subsidiaries, net (14,415 ) (3,994 ) (24,417 ) Issuance of term loans to subsidiaries (42,234 ) (28,498 ) (8,632 ) Repayments of term loans by subsidiaries 22,039 32,265 24,196 Purchase of investments (6,491 ) – – Capital distributions from/(contributions to) subsidiaries, net 388 (3,265 ) (1,500 ) Net cash used for investing activities (40,779 ) (3,571 ) (10,386 ) Cash flows from financing activities Unsecured short-term borrowings, net: With third parties (424 ) (178 ) (1,570 ) With subsidiaries 23,078 2,290 (1,114 ) Proceeds from issuance of long-term borrowings 43,917 40,708 42,795 Repayment of long-term borrowings, including the current portion (27,028 ) (33,314 ) (27,726 ) Purchase of APEX, senior guaranteed securities and trust preferred securities (237 ) (1,171 ) (1 ) Preferred stock redemption (850 ) – – Common stock repurchased (6,772 ) (6,078 ) (4,135 ) Settlement of share-based awards in satisfaction of withholding tax requirements (2,223 ) (1,128 ) (1,204 ) Dividends and dividend equivalents paid on common stock, preferred stock and share-based (1,769 ) (1,706 ) (1,681 ) Proceeds from issuance of preferred stock, net of issuance costs 1,495 1,303 1,993 Proceeds from issuance of common stock, including exercise of share-based awards 7 6 259 Cash settlement of share-based awards (3 ) – (2 ) Net cash provided by financing activities 29,191 732 7,614 Net increase/(decrease) in cash and cash equivalents (3,043 ) 1,745 1,294 Cash and cash equivalents, beginning balance 3,081 1,336 42 Cash and cash equivalents, ending balance $ 38 $ 3,081 $ 1,336 Supplemental Disclosures: Cash payments for interest, net of capitalized interest, were $6.31 billion, $4.91 billion and $3.70 billion for 2017, 2016 and 2015, respectively. Cash payments for income taxes, net of refunds, were $297 million, $61 million and $1.28 billion for 2017, 2016 and 2015, respectively. Cash flows related to common stock repurchased includes common stock repurchased in the prior period for which settlement occurred during the current period and excludes common stock repurchased during the current period for which settlement occurred in the following period. Non-cash • Group Inc. exchanged $84.00 billion of certain loans to and receivables from subsidiaries for an $84.00 billion unsecured subordinated note from Funding IHC (included in loans to and receivables from subsidiaries). • Group Inc. exchanged $750 million of its equity interest in Goldman Sachs (UK) L.L.C. (GS UK), a wholly-owned subsidiary of Group Inc., for a $750 million loan to GS UK. • Group Inc. exchanged $237 million of Trust Preferred Securities and common beneficial interests for $248 million of Group Inc.’s junior subordinated debt. Non-cash • Group Inc. exchanged $1.04 billion of APEX for $1.31 billion of Series E and Series F Preferred Stock. See Note 19 for further information. • Group Inc. exchanged $127 million of senior guaranteed trust securities for $124 million of Group Inc.’s junior subordinated debt. Non-cash • Group Inc. exchanged $6.12 billion in financial instruments owned, at fair value, held by Group Inc. for $5.20 billion of loans to and $918 million of equity in certain of its subsidiaries. • Group Inc. exchanged $262 million of Trust Preferred Securities and common beneficial interests held by Group Inc. for $296 million of Group Inc.’s junior subordinated debt.

Basis of Presentation (Policies

Basis of Presentation (Policies)	12 Months Ended
	Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	These consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States (U.S. GAAP) and include the accounts of Group Inc. and all other entities in which the firm has a controlling financial interest. Intercompany transactions and balances have been eliminated.
Consolidation, Policy	Consolidation The firm consolidates entities in which the firm has a controlling financial interest. The firm determines whether it has a controlling financial interest in an entity by first evaluating whether the entity is a voting interest entity or a variable interest entity (VIE). Voting Interest Entities. Voting interest entities are entities in which (i) the total equity investment at risk is sufficient to enable the entity to finance its activities independently and (ii) the equity holders have the power to direct the activities of the entity that most significantly impact its economic performance, the obligation to absorb the losses of the entity and the right to receive the residual returns of the entity. The usual condition for a controlling financial interest in a voting interest entity is ownership of a majority voting interest. If the firm has a controlling majority voting interest in a voting interest entity, the entity is consolidated. Variable Interest Entities. A VIE is an entity that lacks one or more of the characteristics of a voting interest entity. The firm has a controlling financial interest in a VIE when the firm has a variable interest or interests that provide it with (i) the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance and (ii) the obligation to absorb losses of the VIE or the right to receive benefits from the VIE that could potentially be significant to the VIE. See Note 12 for further information about VIEs. Equity-Method Investments. When the firm does not have a controlling financial interest in an entity but can exert significant influence over the entity’s operating and financial policies, the investment is accounted for either (i) under the equity method of accounting or (ii) at fair value by electing the fair value option available under U.S. GAAP. Significant influence generally exists when the firm owns 20% to 50% of the entity’s common stock or in-substance In general, the firm accounts for investments acquired after the fair value option became available, at fair value. In certain cases, the firm applies the equity method of accounting to new investments that are strategic in nature or closely related to the firm’s principal business activities, when the firm has a significant degree of involvement in the cash flows or operations of the investee or when cost-benefit considerations are less significant. See Note 13 for further information about equity-method investments. Investment Funds. The firm has formed numerous investment funds with third-party investors. These funds are typically organized as limited partnerships or limited liability companies for which the firm acts as general partner or manager. Generally, the firm does not hold a majority of the economic interests in these funds. These funds are usually voting interest entities and generally are not consolidated because third-party investors typically have rights to terminate the funds or to remove the firm as general partner or manager. Investments in these funds are generally measured at net asset value (NAV) and are included in financial instruments owned. See Notes 6, 18 and 22 for further information about investments in funds.
Equity Method Investments	Equity-Method Investments. When the firm does not have a controlling financial interest in an entity but can exert significant influence over the entity’s operating and financial policies, the investment is accounted for either (i) under the equity method of accounting or (ii) at fair value by electing the fair value option available under U.S. GAAP. Significant influence generally exists when the firm owns 20% to 50% of the entity’s common stock or in-substance In general, the firm accounts for investments acquired after the fair value option became available, at fair value. In certain cases, the firm applies the equity method of accounting to new investments that are strategic in nature or closely related to the firm’s principal business activities, when the firm has a significant degree of involvement in the cash flows or operations of the investee or when cost-benefit considerations are less significant. See Note 13 for further information about equity-method investments.
Use of Estimates	Use of Estimates Preparation of these consolidated financial statements requires management to make certain estimates and assumptions, the most important of which relate to fair value measurements, accounting for goodwill and identifiable intangible assets, income tax expense related to the Tax Cuts and Jobs Act (Tax Legislation), provisions for losses that may arise from litigation and regulatory proceedings (including governmental investigations), the allowance for losses on loans receivable and lending commitments held for investment, and provisions for losses that may arise from tax audits. These estimates and assumptions are based on the best available information but actual results could be materially different.
Revenue Recognition, Policy	Revenue Recognition Financial Assets and Financial Liabilities at Fair Value. Financial instruments owned and financial instruments sold, but not yet purchased are recorded at fair value either under the fair value option or in accordance with other U.S. GAAP. In addition, the firm has elected to account for certain of its other financial assets and financial liabilities at fair value by electing the fair value option. The fair value of a financial instrument is the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Financial assets are marked to bid prices and financial liabilities are marked to offer prices. Fair value measurements do not include transaction costs. Fair value gains or losses are generally included in market making for positions in Institutional Client Services and other principal transactions for positions in Investing & Lending. See Notes 5 through 8 for further information about fair value measurements. Investment Banking. Fees from financial advisory assignments and underwriting revenues are recognized in earnings when the services related to the underlying transaction are completed under the terms of the assignment. Expenses associated with such transactions are deferred until the related revenue is recognized or the assignment is otherwise concluded. Expenses associated with financial advisory assignments are recorded as non-compensation No. 2014-09, Investment Management. The firm earns management fees and incentive fees for investment management services. Management fees for mutual funds are calculated as a percentage of daily net asset value and are received monthly. Management fees for hedge funds and separately managed accounts are calculated as a percentage of month-end 12-month 12-month The firm makes payments to brokers and advisors related to the placement of the firm’s investment funds. These payments are calculated based on either a percentage of the management fee or the investment fund’s net asset value. Where the firm is principal to the arrangement, such costs are recorded on a gross basis and included in brokerage, clearing, exchange and distribution fees, and where the firm is agent to the arrangement, such costs are recorded on a net basis in investment management revenues. As a result of adopting ASU No. 2014-09, Commissions and Fees. The firm earns commissions and fees from executing and clearing client transactions on stock, options and futures markets, as well as over-the-counter
Transfers of Financial Assets, Policy	Transfers of Financial Assets Transfers of financial assets are accounted for as sales when the firm has relinquished control over the assets transferred. For transfers of financial assets accounted for as sales, any gains or losses are recognized in net revenues. Assets or liabilities that arise from the firm’s continuing involvement with transferred financial assets are initially recognized at fair value. For transfers of financial assets that are not accounted for as sales, the assets are generally included in financial instruments owned and the transfer is accounted for as a collateralized financing, with the related interest expense recognized over the life of the transaction. See Note 10 for further information about transfers of financial assets accounted for as collateralized financings and Note 11 for further information about transfers of financial assets accounted for as sales.
Cash and Cash Equivalents, Policy	Cash and Cash Equivalents The firm defines cash equivalents as highly liquid overnight deposits held in the ordinary course of business. As of December 2017 and December 2016, cash and cash equivalents included $10.79 billion and $11.15 billion, respectively, of cash and due from banks, and $99.26 billion and $110.56 billion, respectively, of interest-bearing deposits with banks. The firm segregates cash for regulatory and other purposes related to client activity. As of December 2017 and December 2016, $18.44 billion and $14.65 billion, respectively, of cash and cash equivalents were segregated for regulatory and other purposes. See “Recent Accounting Developments” for further information. In addition, the firm segregates securities for regulatory and other purposes related to client activity. See Note 10 for further information about segregated securities.
Receivables from and Payables to Brokers, Dealers and Clearing Organizations, Policy	Receivables from and Payables to Brokers, Dealers and Clearing Organizations Receivables from and payables to brokers, dealers and clearing organizations are accounted for at cost plus accrued interest, which generally approximates fair value. While these receivables and payables are carried at amounts that approximate fair value, they are not accounted for at fair value under the fair value option or at fair value in accordance with other U.S. GAAP and therefore are not included in the firm’s fair value hierarchy in Notes 6 through 8. Had these receivables and payables been included in the firm’s fair value hierarchy, substantially all would have been classified in level 2 as of both December 2017 and December 2016.
Receivables from Customers and Counterparties, Policy	Receivables from Customers and Counterparties Receivables from customers and counterparties generally relate to collateralized transactions. Such receivables primarily consist of customer margin loans, certain transfers of assets accounted for as secured loans rather than purchases at fair value and collateral posted in connection with certain derivative transactions. Substantially all of these receivables are accounted for at amortized cost net of estimated uncollectible amounts. Certain of the firm’s receivables from customers and counterparties are accounted for at fair value under the fair value option, with changes in fair value generally included in market making revenues. See Note 8 for further information about receivables from customers and counterparties accounted for at fair value under the fair value option. In addition, as of December 2017 and December 2016, the firm’s receivables from customers and counterparties included $4.63 billion and $2.60 billion, respectively, of loans held for sale, accounted for at the lower of cost or fair value. See Note 5 for an overview of the firm’s fair value measurement policies. As of both December 2017 and December 2016, the carrying value of receivables not accounted for at fair value generally approximated fair value. While these receivables are carried at amounts that approximate fair value, they are not accounted for at fair value under the fair value option or at fair value in accordance with other U.S. GAAP and therefore are not included in the firm’s fair value hierarchy in Notes 6 through 8. Had these receivables been included in the firm’s fair value hierarchy, substantially all would have been classified in level 2 as of both December 2017 and December 2016. Interest on receivables from customers and counterparties is recognized over the life of the transaction and included in interest income.
Payables to Customers and Counterparties, Policy	Payables to Customers and Counterparties Payables to customers and counterparties primarily consist of customer credit balances related to the firm’s prime brokerage activities. Payables to customers and counterparties are accounted for at cost plus accrued interest, which generally approximates fair value. While these payables are carried at amounts that approximate fair value, they are not accounted for at fair value under the fair value option or at fair value in accordance with other U.S. GAAP and therefore are not included in the firm’s fair value hierarchy in Notes 6 through 8. Had these payables been included in the firm’s fair value hierarchy, substantially all would have been classified in level 2 as of both December 2017 and December 2016. Interest on payables to customers and counterparties is recognized over the life of the transaction and included in interest expense.
Offsetting Assets and Liabilities, Policy	Offsetting Assets and Liabilities To reduce credit exposures on derivatives and securities financing transactions, the firm may enter into master netting agreements or similar arrangements (collectively, netting agreements) with counterparties that permit it to offset receivables and payables with such counterparties. A netting agreement is a contract with a counterparty that permits net settlement of multiple transactions with that counterparty, including upon the exercise of termination rights by a non-defaulting non-defaulting Derivatives are reported on a net-by-counterparty net-by-counterparty In the consolidated statements of financial condition, derivatives are reported net of cash collateral received and posted under enforceable credit support agreements, when transacted under an enforceable netting agreement. In the consolidated statements of financial condition, resale and repurchase agreements, and securities borrowed and loaned, are not reported net of the related cash and securities received or posted as collateral. See Note 10 for further information about collateral received and pledged, including rights to deliver or repledge collateral. See Notes 7 and 10 for further information about offsetting.
Foreign Currency Translation, Policy	Foreign Currency Translation Assets and liabilities denominated in non-U.S. non-U.S.
Recent Accounting Developments	Recent Accounting Developments Revenue from Contracts with Customers (ASC 606). In May 2014, the FASB issued ASU No. 2014-09. The firm adopted this ASU in January 2018 under a modified retrospective approach. As a result of adopting this ASU, the firm will, among other things, delay recognition of non-refundable The firm will also prospectively change the presentation of certain costs from a net presentation within net revenues to a gross basis, and vice versa. Beginning in 2018, certain underwriting expenses, which are currently netted against Investment Banking revenues and certain distribution costs, which are currently netted against Investment Management revenues, will be presented gross as operating expenses. Soft dollar commissions, which are currently reported gross as operating expenses, will be presented net within commissions and fees. The impact of this ASU will depend on the nature of the firm’s activities after adoption, although these changes in presentation are not expected to have a material impact on the firm’s results of operations. Measuring the Financial Assets and the Financial Liabilities of a Consolidated Collateralized Financing Entity (ASC 810). In August 2014, the FASB issued ASU No. 2014-13, The firm adopted the ASU in January 2016. Adoption of the ASU did not materially affect the firm’s financial condition, results of operations or cash flows. Amendments to the Consolidation Analysis (ASC 810). In February 2015, the FASB issued ASU No. 2015-02, No. 2009-17, The firm adopted the ASU in January 2016, using a modified retrospective approach. The impact of adoption was a net reduction to both total assets and total liabilities of approximately $200 million, substantially all included in financial instruments owned and in other liabilities and accrued expenses, respectively. Adoption of this ASU did not have an impact on the firm’s results of operations. See Note 12 for further information about the adoption. Simplifying the Accounting for Measurement-Period Adjustments (ASC 805). In September 2015, the FASB issued ASU No. 2015-16, The firm adopted the ASU in January 2016. Adoption of the ASU did not materially affect the firm’s financial condition, results of operations or cash flows. Recognition and Measurement of Financial Assets and Financial Liabilities (ASC 825). In January 2016, the FASB issued ASU No. 2016-01, The ASU was effective for the firm in January 2018. Early adoption was permitted under a modified retrospective approach for the requirements related to DVA. In January 2016, the firm early adopted this ASU for the requirements related to DVA and reclassified the cumulative DVA, a gain of $305 million (net of tax), from retained earnings to accumulated other comprehensive loss. The adoption of the remaining provisions of the ASU in January 2018 did not have a material impact on the firm’s financial condition, results of operations or cash flows. Leases (ASC 842). In February 2016, the FASB issued ASU No. 2016-02, right-of-use right-of-use The ASU is effective for the firm in January 2019 under a modified retrospective approach. Early adoption is permitted. The firm’s implementation efforts include reviewing the terms of existing leases and service contracts, which may include embedded leases. Based on the implementation efforts to date, the firm expects a gross up on its consolidated statements of financial condition upon recognition of the right-of-use Improvements to Employee Share-Based Payment Accounting (ASC 718). In March 2016, the FASB issued ASU No. 2016-09, paid-in The firm adopted the ASU in January 2017 and the impact of the restricted stock unit (RSU) deliveries and option exercises during 2017 was a reduction to the provision for taxes of $719 million, which was recognized in the consolidated statements of earnings. The impact will vary in future periods depending upon, among other things, the number of RSUs delivered and their change in value since grant. Prior to the adoption of this ASU, this amount would have been recorded directly to additional paid-in In addition, the ASU modifies the classification of certain share-based payment activities within the statements of cash flows. As a result, the firm reclassified, on a retrospective basis, a cash outflow of $1.13 billion and $1.20 billion related to the settlement of share-based awards in satisfaction of withholding tax requirements from operating activities to financing activities and a cash inflow of $202 million and $407 million of excess tax benefits related to share-based awards from financing activities to operating activities for 2016 and 2015, respectively. Measurement of Credit Losses on Financial Instruments (ASC 326). In June 2016, the FASB issued ASU No. 2016-13, Under CECL, the allowance for losses for financial assets that are measured at amortized cost reflects management’s estimate of credit losses over the remaining expected life of the financial assets. Expected credit losses for newly recognized financial assets, as well as changes to expected credit losses during the period, would be recognized in earnings. For certain purchased financial assets with deterioration in credit quality since origination, an initial allowance would be recorded for expected credit losses and recognized as an increase to the purchase price rather than as an expense. Expected credit losses, including losses on off-balance-sheet The ASU is effective for the firm in January 2020 under a modified retrospective approach. Early adoption is permitted in January 2019. Adoption of the ASU will result in earlier recognition of credit losses and an increase in the recorded allowance for certain purchased loans with deterioration in credit quality since origination with a corresponding increase to their gross carrying value. The impact of adoption of this ASU on the firm’s financial condition, results of operations and cash flows will depend on, among other things, the economic environment and the type of financial assets held by the firm on the date of adoption. Classification of Certain Cash Receipts and Cash Payments (ASC 230). In August 2016, the FASB issued ASU No. 2016-15, The firm adopted this ASU in January 2018 under a retrospective approach. The impact of this ASU will depend on the nature of the firm’s activities after adoption, although the firm does not expect the change in classification to have a material impact on the consolidated statements of cash flows. Restricted Cash (ASC 230). In November 2016, the FASB issued ASU No. 2016-18, The firm early adopted the ASU in December 2016 and reclassified cash segregated for regulatory and other purposes into cash and cash equivalents disclosed in the consolidated statements of cash flows. The impact of adoption was a decrease of $3.69 billion and an increase of $909 million for 2016 and 2015, respectively, to net cash provided by operating activities. In addition, in December 2016, to be consistent with the presentation of segregated cash in the consolidated statements of cash flows under the ASU, the firm reclassified amounts previously included in cash and securities segregated for regulatory and other purposes into cash and cash equivalents, securities purchased under agreements to resell, securities borrowed and financial instruments owned in the consolidated statements of financial condition. Previously reported amounts in the consolidated statements of cash flows and notes to the consolidated financial statements have been conformed to the current presentation. Clarifying the Definition of a Business (ASC 805). In January 2017, the FASB issued ASU No. 2017-01, The firm adopted this ASU in January 2018 under a prospective approach. The impact of this ASU will depend on the nature of the firm’s activities after adoption, although the firm expects that fewer transactions will be treated as acquisitions (or disposals) of businesses. Simplifying the Test for Goodwill Impairment (ASC 350). In January 2017, the FASB issued ASU No. 2017-04, The ASU is effective for the firm in 2020. The firm early adopted this ASU in the fourth quarter of 2017. Adoption of the ASU did not have a material impact on the results of the firm’s goodwill impairment test. Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets (ASC 610-20). In February 2017, the FASB issued ASU No. 2017-05, 610-20) — The firm adopted this ASU in January 2018 under a modified retrospective approach. Adoption of the ASU did not have an impact on the firm’s financial condition, results of operations or cash flows. Targeted Improvements to Accounting for Hedging Activities (ASC 815). In August 2017, the FASB issued ASU No. 2017-12, The firm early adopted this ASU in January 2018. Adoption of this ASU did not have a material impact on the firm’s financial condition, results of operations or cash flows. Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (ASC 220). In February 2018, the FASB issued ASU No. 2018-02, “Income Statement — Reporting Comprehensive Income (Topic 220) — Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” This ASU permits a reporting entity to reclassify the income tax effects of Tax Legislation on items within accumulated other comprehensive income to retained earnings. The ASU is effective for the firm in January 2019 under a retrospective or a modified retrospective approach. Early adoption is permitted. Since this ASU only permits reclassification within shareholders’ equity, adoption of this ASU will not have a material impact on the firm’s financial condition.
Fair Value Measurements, Policy	Fair Value Measurements The fair value of a financial instrument is the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Financial assets are marked to bid prices and financial liabilities are marked to offer prices. Fair value measurements do not include transaction costs. The firm measures certain financial assets and financial liabilities as a portfolio (i.e., based on its net exposure to market and/or credit risks). The best evidence of fair value is a quoted price in an active market. If quoted prices in active markets are not available, fair value is determined by reference to prices for similar instruments, quoted prices or recent transactions in less active markets, or internally developed models that primarily use market-based or independently sourced inputs including, but not limited to, interest rates, volatilities, equity or debt prices, foreign exchange rates, commodity prices, credit spreads and funding spreads (i.e., the spread or difference between the interest rate at which a borrower could finance a given financial instrument relative to a benchmark interest rate). U.S. GAAP has a three-level hierarchy for disclosure of fair value measurements. This hierarchy prioritizes inputs to the valuation techniques used to measure fair value, giving the highest priority to level 1 inputs and the lowest priority to level 3 inputs. A financial instrument’s level in this hierarchy is based on the lowest level of input that is significant to its fair value measurement. In evaluating the significance of a valuation input, the firm considers, among other factors, a portfolio’s net risk exposure to that input. The fair value hierarchy is as follows: Level 1. Inputs are unadjusted quoted prices in active markets to which the firm had access at the measurement date for identical, unrestricted assets or liabilities. Level 2. Inputs to valuation techniques are observable, either directly or indirectly. Level 3. One or more inputs to valuation techniques are significant and unobservable. Cash Instruments Cash instruments include U.S. government and agency obligations, non-U.S. non-derivative Level 1 Cash Instruments Level 1 cash instruments include certain money market instruments, U.S. government obligations, most non-U.S. The firm defines active markets for equity instruments based on the average daily trading volume both in absolute terms and relative to the market capitalization for the instrument. The firm defines active markets for debt instruments based on both the average daily trading volume and the number of days with trading activity. Level 2 Cash Instruments Level 2 cash instruments include most money market instruments, most government agency obligations, certain non-U.S. Valuations of level 2 cash instruments can be verified to quoted prices, recent trading activity for identical or similar instruments, broker or dealer quotations or alternative pricing sources with reasonable levels of price transparency. Consideration is given to the nature of the quotations (e.g., indicative or firm) and the relationship of recent market activity to the prices provided from alternative pricing sources. Valuation adjustments are typically made to level 2 cash instruments (i) if the cash instrument is subject to transfer restrictions and/or (ii) for other premiums and liquidity discounts that a market participant would require to arrive at fair value. Valuation adjustments are generally based on market evidence. Level 3 Cash Instruments Level 3 cash instruments have one or more significant valuation inputs that are not observable. Absent evidence to the contrary, level 3 cash instruments are initially valued at transaction price, which is considered to be the best initial estimate of fair value. Subsequently, the firm uses other methodologies to determine fair value, which vary based on the type of instrument. Valuation inputs and assumptions are changed when corroborated by substantive observable evidence, including values realized on sales of financial assets. Valuation Techniques and Significant Inputs of Level 3 Cash Instruments Valuation techniques of level 3 cash instruments vary by instrument, but are generally based on discounted cash flow techniques. The valuation techniques and the nature of significant inputs used to determine the fair values of each type of level 3 cash instrument are described below: Loans and Securities Backed by Commercial Real Estate. Loans and securities backed by commercial real estate are directly or indirectly collateralized by a single commercial real estate property or a portfolio of properties, and may include tranches of varying levels of subordination. Significant inputs are generally determined based on relative value analyses and include: • Transaction prices in both the underlying collateral and instruments with the same or similar underlying collateral; • Market yields implied by transactions of similar or related assets and/or current levels and changes in market indices such as the CMBX (an index that tracks the performance of commercial mortgage bonds); • A measure of expected future cash flows in a default scenario (recovery rates) implied by the value of the underlying collateral, which is mainly driven by current performance of the underlying collateral, capitalization rates and multiples. Recovery rates are expressed as a percentage of notional or face value of the instrument and reflect the benefit of credit enhancements on certain instruments; and • Timing of expected future cash flows (duration) which, in certain cases, may incorporate the impact of other unobservable inputs (e.g., prepayment speeds). Loans and Securities Backed by Residential Real Estate. Loans and securities backed by residential real estate are directly or indirectly collateralized by portfolios of residential real estate and may include tranches of varying levels of subordination. Significant inputs are generally determined based on relative value analyses, which incorporate comparisons to instruments with similar collateral and risk profiles. Significant inputs include: • Transaction prices in both the underlying collateral and instruments with the same or similar underlying collateral; • Market yields implied by transactions of similar or related assets; • Cumulative loss expectations, driven by default rates, home price projections, residential property liquidation timelines, related costs and subsequent recoveries; and • Duration, driven by underlying loan prepayment speeds and residential property liquidation timelines. Corporate Loans and Debt Securities. Corporate loans and debt securities includes bank loans and bridge loans and corporate debt securities. Significant inputs are generally determined based on relative value analyses, which incorporate comparisons both to prices of credit default swaps that reference the same or similar underlying instrument or entity and to other debt instruments for the same issuer for which observable prices or broker quotations are available. Significant inputs include: • Market yields implied by transactions of similar or related assets and/or current levels and trends of market indices such as CDX and LCDX (indices that track the performance of corporate credit and loans, respectively); • Current performance and recovery assumptions and, where the firm uses credit default swaps to value the related cash instrument, the cost of borrowing the underlying reference obligation; and • Duration. Equity Securities. Equity securities includes private equity securities and convertible debentures. Recent third-party completed or pending transactions (e.g., merger proposals, tender offers, debt restructurings) are considered to be the best evidence for any change in fair value. When these are not available, the following valuation methodologies are used, as appropriate: • Industry multiples (primarily EBITDA multiples) and public comparables; • Transactions in similar instruments; • Discounted cash flow techniques; and • Third-party appraisals. The firm also considers changes in the outlook for the relevant industry and financial performance of the issuer as compared to projected performance. Significant inputs include: • Market and transaction multiples; • Discount rates and capitalization rates; and • For equity securities with debt-like features, market yields implied by transactions of similar or related assets, current performance and recovery assumptions, and duration. Other Cash Instruments. Other cash instruments consists of non-U.S. • Market yields implied by transactions of similar or related assets and/or current levels and trends of market indices; • Current performance and recovery assumptions and, where the firm uses credit default swaps to value the related cash instrument, the cost of borrowing the underlying reference obligation; and • Duration. Investments in Funds at Net Asset Value Per Share Cash instruments at fair value include investments in funds that are measured at NAV of the investment fund. The firm uses NAV to measure the fair value of its fund investments when (i) the fund investment does not have a readily determinable fair value and (ii) the NAV of the investment fund is calculated in a manner consistent with the measurement principles of investment company accounting, including measurement of the investments at fair value. Derivatives are reported on a net-by-counterparty Valuation Techniques for Derivatives The firm’s level 2 and level 3 derivatives are valued using derivative pricing models (e.g., discounted cash flow models, correlation models, and models that incorporate option pricing methodologies, such as Monte Carlo simulations). Price transparency of derivatives can generally be characterized by product type, as described below. • Interest Rate. 10-year 2-year • Credit. • Currency. • Commodity. • Equity. Liquidity is essential to observability of all product types. If transaction volumes decline, previously transparent prices and other inputs may become unobservable. Conversely, even highly structured products may at times have trading volumes large enough to provide observability of prices and other inputs. See Note 5 for an overview of the firm’s fair value measurement policies.
Hedge Accounting, Policy	• If a derivative was transferred into level 3 during a reporting period, its entire gain or loss for the period is classified in level 3. Transfers between levels are reported at the beginning of the reporting period in which they occur. Hedge Accounting The firm applies hedge accounting for (i) certain interest rate swaps used to manage the interest rate exposure of certain fixed-rate unsecured long-term and short-term borrowings and certain fixed-rate certificates of deposit and (ii) certain foreign currency forward contracts and foreign currency-denominated debt used to manage foreign currency exposures on the firm’s net investment in certain non-U.S. To qualify for hedge accounting, the hedging instrument must be highly effective at reducing the risk from the exposure being hedged. Additionally, the firm must formally document the hedging relationship at inception and test the hedging relationship at least on a quarterly basis to ensure the hedging instrument continues to be highly effective over the life of the hedging relationship. Fair Value Hedges The firm designates certain interest rate swaps as fair value hedges of certain fixed-rate unsecured long-term and short-term debt and fixed-rate certificates of deposit. These interest rate swaps hedge changes in fair value attributable to the designated benchmark interest rate (e.g., London Interbank Offered Rate (LIBOR) or Overnight Index Swap Rate), effectively converting a substantial portion of fixed-rate obligations into floating-rate obligations. The firm applies a statistical method that utilizes regression analysis when assessing the effectiveness of its fair value hedging relationships in achieving offsetting changes in the fair values of the hedging instrument and the risk being hedged (i.e., interest rate risk). An interest rate swap is considered highly effective in offsetting changes in fair value attributable to changes in the hedged risk when the regression analysis results in a coefficient of determination of 80% or greater and a slope between 80% and 125%. For qualifying fair value hedges, gains or losses on derivatives are included in interest expense. The change in fair value of the hedged item attributable to the risk being hedged is reported as an adjustment to its carrying value and is subsequently amortized into interest expense over its remaining life. Gains or losses resulting from hedge ineffectiveness are included in interest expense. When a derivative is no longer designated as a hedge, any remaining difference between the carrying value and par value of the hedged item is amortized to interest expense over the remaining life of the hedged item using the effective interest method. See Note 23 for further information about interest income and interest expense. Net Investment Hedges The firm seeks to reduce the impact of fluctuations in foreign exchange rates on its net investments in certain non-U.S. For qualifying net investment hedges, the gains or losses on the hedging instruments, to the extent effective, are included in currency translation.
Fair Value Option, Policy	Fair Value Option Other Financial Assets and Financial Liabilities at Fair Value In addition to all cash and derivative instruments included in financial instruments owned and financial instruments sold, but not yet purchased, the firm accounts for certain of its other financial assets and financial liabilities at fair value, substantially all of which are accounted for at fair value under the fair value option. The primary reasons for electing the fair value option are to: • Reflect economic events in earnings on a timely basis; • Mitigate volatility in earnings from using different measurement attributes (e.g., transfers of financial instruments owned accounted for as financings are recorded at fair value, whereas the related secured financing would be recorded on an accrual basis absent electing the fair value option); and • Address simplification and cost-benefit considerations (e.g., accounting for hybrid financial instruments at fair value in their entirety versus bifurcation of embedded derivatives and hedge accounting for debt hosts). Hybrid financial instruments are instruments that contain bifurcatable embedded derivatives and do not require settlement by physical delivery of nonfinancial assets (e.g., physical commodities). If the firm elects to bifurcate the embedded derivative from the associated debt, the derivative is accounted for at fair value and the host contract is accounted for at amortized cost, adjusted for the effective portion of any fair value hedges. If the firm does not elect to bifurcate, the entire hybrid financial instrument is accounted for at fair value under the fair value option.
Loans Receivable, Policy	Loans Receivable Loans receivable consists of loans held for investment that are accounted for at amortized cost net of allowance for loan losses. Interest on loans receivable is recognized over the life of the loan and is recorded on an accrual basis. Purchased Credit Impaired (PCI) Loans Loans receivable includes PCI loans, which represent acquired loans or pools of loans with evidence of credit deterioration subsequent to their origination and where it is probable, at acquisition, that the firm will not be able to collect all contractually required payments. Loans acquired within the same reporting period, which have at least two common risk characteristics, one of which relates to their credit risk, are eligible to be pooled together and considered a single unit of account. PCI loans are initially recorded at the acquisition price and the difference between the acquisition price and the expected cash flows (accretable yield) is recognized as interest income over the life of such loans or pools of loans on an effective yield method. Expected cash flows on PCI loans are determined using various inputs and assumptions, including default rates, loss severities, recoveries, amount and timing of prepayments and other macroeconomic indicators. Loans receivable (excluding PCI loans) are determined to be impaired when it is probable that the firm will not be able to collect all principal and interest due under the contractual terms of the loan. At that time, loans are generally placed on nonaccrual status and all accrued but uncollected interest is reversed against interest income, and interest subsequently collected is recognized on a cash basis to the extent the loan balance is deemed collectible. Otherwise, all cash received is used to reduce the outstanding loan balance. In certain circumstances, the firm may also modify the original terms of a loan agreement by granting a concession to a borrower experiencing financial difficulty. Such modifications are considered troubled debt restructurings and typically include interest rate reductions, payment extensions, and modification of loan covenants. Loans modified in a troubled debt restructuring are considered impaired and are subject to specific loan-level reserves. The firm’s allowance for loan losses consists of specific loan-level reserves, portfolio level reserves and reserves on PCI loans as described below: • Specific loan-level reserves are determined on loans (excluding PCI loans) that exhibit credit quality weakness and are therefore individually evaluated for impairment. • Portfolio level reserves are determined on loans (excluding PCI loans) not evaluated for specific loan-level reserves by aggregating groups of loans with similar risk characteristics and estimating the probable loss inherent in the portfolio. • Reserves on PCI loans are recorded when it is determined that the expected cash flows, which are reassessed on a quarterly basis, will be lower than those used to establish the current effective yield for such loans or pools of loans. If the expected cash flows are determined to be significantly higher than those used to establish the current effective yield, such increases are initially recognized as a reduction to any previously recorded allowances for loan losses and any remaining increases are recognized as interest income prospectively over the life of the loan or pools of loans as an increase to the effective yield. The allowance for loan losses is determined using various risk factors, including industry default and loss data, current macroeconomic indicators, borrower’s capacity to meet its financial obligations, borrower’s country of risk, loan seniority and collateral type. In addition, for loans backed by real estate, risk factors include loan to value ratio, debt service ratio and home price index. Risk factors for Marcus loans include FICO credit scores and delinquency status. Management’s estimate of loan losses entails judgment about loan collectability at the reporting dates, and there are uncertainties inherent in those judgments. While management uses the best information available to determine this estimate, future adjustments to the allowance may be necessary based on, among other things, changes in the economic environment or variances between actual results and the original assumptions used. Loans are charged off against the allowance for loan losses when deemed to be uncollectible. The firm also records an allowance for losses on lending commitments that are held for investment and accounted for on an accrual basis. Such allowance is determined using the same methodology as the allowance for loan losses, while also taking into consideration the probability of drawdowns or funding, and is included in other liabilities and accrued expenses.
Collateralized Agreements and Financings, Policy	Collateralized agreements and financings are presented on a net-by-counterparty Even though repurchase and resale agreements (including “repos- and reverses-to-maturity”) The firm has elected to apply the fair value option to substantially all other secured financings because the use of fair value eliminates non-economic Other secured financings that are not recorded at fair value are recorded based on the amount of cash received plus accrued interest, which generally approximates fair value. • Short-term other secured financings includes financings maturing within one year of the financial statement date and financings that are redeemable within one year of the financial statement date at the option of the holder. • Long-term other secured financings that are repayable prior to maturity at the option of the firm are reflected at their contractual maturity dates. • Long-term other secured financings that are redeemable prior to maturity at the option of the holder are reflected at the earliest dates such options become exercisable.
Securitization Activities, Policy	The firm accounts for a securitization as a sale when it has relinquished control over the transferred financial assets. Prior to securitization, the firm generally accounts for assets pending transfer at fair value and therefore does not typically recognize significant gains or losses upon the transfer of assets. Net revenues from underwriting activities are recognized in connection with the sales of the underlying beneficial interests to investors. For transfers of financial assets that are not accounted for as sales, the assets remain in financial instruments owned and the transfer is accounted for as a collateralized financing, with the related interest expense recognized over the life of the transaction. See Notes 10 and 23 for further information about collateralized financings and interest expense, respectively.
Consolidation, Variable Interest Entity, Policy	VIE Consolidation Analysis The enterprise with a controlling financial interest in a VIE is known as the primary beneficiary and consolidates the VIE. The firm determines whether it is the primary beneficiary of a VIE by performing an analysis that principally considers: • Which variable interest holder has the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance; • Which variable interest holder has the obligation to absorb losses or the right to receive benefits from the VIE that could potentially be significant to the VIE; • The VIE’s purpose and design, including the risks the VIE was designed to create and pass through to its variable interest holders; • The VIE’s capital structure; • The terms between the VIE and its variable interest holders and other parties involved with the VIE; and • Related-party relationships. The firm reassesses its evaluation of whether an entity is a VIE when certain reconsideration events occur. The firm reassesses its determination of whether it is the primary beneficiary of a VIE on an ongoing basis based on current facts and circumstances.
Property, Plant and Equipment, Policy	Substantially all property and equipment is depreciated on a straight-line basis over the useful life of the asset. Leasehold improvements are amortized on a straight-line basis over the useful life of the improvement or the term of the lease, whichever is shorter. Capitalized costs of software developed or obtained for internal use are amortized on a straight-line basis over three years. Substantially all of the firm’s identifiable intangible assets are considered to have finite useful lives and are amortized over their estimated useful lives generally using the straight-line method. Impairments The firm tests property, leasehold improvements and equipment, identifiable intangible assets and other assets for impairment whenever events or changes in circumstances suggest that an asset’s or asset group’s carrying value may not be fully recoverable. To the extent the carrying value of an asset exceeds the projected undiscounted cash flows expected to result from the use and eventual disposal of the asset or asset group, the firm determines the asset is impaired and records an impairment equal to the difference between the estimated fair value and the carrying value of the asset or asset group. In addition, the firm will recognize an impairment prior to the sale of an asset if the carrying value of the asset exceeds its estimated fair value.
Goodwill and Intangible Assets, Policy	Goodwill is the cost of acquired companies in excess of the fair value of net assets, including identifiable intangible assets, at the acquisition date. Goodwill is assessed for impairment annually in the fourth quarter or more frequently if events occur or circumstances change that indicate an impairment may exist. When assessing goodwill for impairment, first, qualitative factors are assessed to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. If the results of the qualitative assessment are not conclusive, a quantitative goodwill test is performed.
Deposits, Policy	The firm’s savings and demand deposits are recorded based on the amount of cash received plus accrued interest.
Debt, Policy	Unsecured short-term borrowings includes the portion of unsecured long-term borrowings maturing within one year of the financial statement date and unsecured long-term borrowings that are redeemable within one year of the financial statement date at the option of the holder. • Unsecured long-term borrowings maturing within one year of the financial statement date and unsecured long-term borrowings that are redeemable within one year of the financial statement date at the option of the holder are excluded as they are included in unsecured short-term borrowings. • Unsecured long-term borrowings that are repayable prior to maturity at the option of the firm are reflected at their contractual maturity dates. • Unsecured long-term borrowings that are redeemable prior to maturity at the option of the holder are reflected at the earliest dates such options become exercisable.
Commitments to Extend Credit, Policy	As of December 2017 and December 2016, $124.50 billion and $98.05 billion, respectively, of the firm’s lending commitments were held for investment and were accounted for on an accrual basis. See Note 9 for further information about such commitments. In addition, as of December 2017 and December 2016, $9.84 billion and $6.87 billion, respectively, of the firm’s lending commitments were held for sale and were accounted for at the lower of cost or fair value. The firm accounts for the remaining commitments to extend credit at fair value. Losses, if any, are generally recorded, net of any fees in other principal transactions.
Property, Plant and Equipment, Operating Lease Policy	Operating leases include office space held in excess of current requirements. Rent expense relating to space held for growth is included in occupancy expenses. The firm records a liability, based on the fair value of the remaining lease rentals reduced by any potential or existing sublease rentals, for leases where the firm has ceased using the space and management has concluded that the firm will not derive any future economic benefits. Costs to terminate a lease before the end of its term are recognized and measured at fair value on termination.
Derivative Guarantees, Policy	The firm enters into various derivatives that meet the definition of a guarantee under U.S. GAAP, including written equity and commodity put options, written currency contracts and interest rate caps, floors and swaptions. Disclosures about derivatives are not required if they may be cash settled and the firm has no basis to conclude it is probable that the counterparties held the underlying instruments at inception of the contract. The firm has concluded that these conditions have been met for certain large, internationally active commercial and investment bank counterparties, central clearing counterparties and certain other counterparties.
Earnings Per Share Policy	Basic earnings per common share (EPS) is calculated by dividing net earnings applicable to common shareholders by the weighted average number of common shares outstanding and RSUs for which no future service is required as a condition to the delivery of the underlying common stock (collectively, basic shares). Diluted EPS includes the determinants of basic EPS and, in addition, reflects the dilutive effect of the common stock deliverable for stock options and for RSUs for which future service is required as a condition to the delivery of the underlying common stock.
Interest Income and Interest Expense, Policy	Interest is recorded over the life of the instrument on an accrual basis based on contractual interest rates.
Income Tax, Policy	Provision for Income Taxes Income taxes are provided for using the asset and liability method under which deferred tax assets and liabilities are recognized for temporary differences between the financial reporting and tax bases of assets and liabilities. The firm reports interest expense related to income tax matters in provision for taxes and income tax penalties in other expenses. Deferred Income Taxes Deferred income taxes reflect the net tax effects of temporary differences between the financial reporting and tax bases of assets and liabilities. These temporary differences result in taxable or deductible amounts in future years and are measured using the tax rates and laws that will be in effect when such differences are expected to reverse. Valuation allowances are established to reduce deferred tax assets to the amount that more likely than not will be realized and primarily relate to the ability to utilize losses in various tax jurisdictions. Tax assets and liabilities are presented as a component of other assets and other liabilities and accrued expenses, respectively. Unrecognized Tax Benefits The firm recognizes tax positions in the consolidated financial statements only when it is more likely than not that the position will be sustained on examination by the relevant taxing authority based on the technical merits of the position. A position that meets this standard is measured at the largest amount of benefit that will more likely than not be realized on settlement. A liability is established for differences between positions taken in a tax return and amounts recognized in the consolidated financial statements.
Business Segments, Policy	The firm allocates assets (including allocations of global core liquid assets and cash, secured client financing and other assets), revenues and expenses among the four business segments. Due to the integrated nature of these segments, estimates and judgments are made in allocating certain assets, revenues and expenses. The allocation process is based on the manner in which management currently views the performance of the segments. Transactions between segments are based on specific criteria or approximate third-party rates.
Share-based Compensation, Policy	The cost of employee services received in exchange for a share-based award is generally measured based on the grant-date fair value of the award. Share-based awards that do not require future service (i.e., vested awards, including awards granted to retirement-eligible employees) are expensed immediately. Share-based awards that require future service are amortized over the relevant service period. Effective January 2017, forfeitures are recorded when they occur. Prior to January 2017, expected forfeitures were estimated and recorded over the vesting period. Cash dividend equivalents paid on outstanding RSUs are charged to retained earnings. If RSUs that require future service are forfeited, the related dividend equivalents originally charged to retained earnings are reclassified to compensation expense in the period in which forfeiture occurs. The firm generally issues new shares of common stock upon delivery of share-based awards. In certain cases, primarily related to conflicted employment (as outlined in the applicable award agreements), the firm may cash settle share-based compensation awards accounted for as equity instruments. For these awards, whose terms allow for cash settlement, additional paid-in The firm grants RSUs (including RSUs subject to performance conditions) to employees under the 2015 SIP, which are generally valued based on the closing price of the underlying shares on the date of grant after taking into account a liquidity discount for any applicable post-vesting and delivery transfer restrictions.

Financial Instruments Owned a40

Financial Instruments Owned and Financial Instruments Sold, But Not Yet Purchased (Tables)	12 Months Ended
	Dec. 31, 2017
Text Block [Abstract]
Financial Instruments Owned and Financial Instruments Sold, But Not Yet Purchased	The table below presents the firm’s financial instruments owned and financial instruments sold, but not yet purchased. $ in millions Financial Financial As of December 2017 Money market instruments $ 1,608 $ – Government and agency obligations: U.S. 76,418 17,911 Non-U.S. 33,956 23,311 Loans and securities backed by: Commercial real estate 3,436 1 Residential real estate 11,993 – Corporate loans and debt securities 33,683 7,153 State and municipal obligations 1,471 – Other debt obligations 2,164 1 Equity securities 96,132 23,882 Commodities 3,194 40 Investments in funds at NAV 4,596 – Subtotal 268,651 72,299 Derivatives 47,337 39,631 Total $315,988 $111,930 As of December 2016 Money market instruments $ 1,319 $ – Government and agency obligations: U.S. 57,657 16,627 Non-U.S. 29,381 20,502 Loans and securities backed by: Commercial real estate 3,842 – Residential real estate 12,195 3 Corporate loans and debt securities 28,659 6,570 State and municipal obligations 1,059 – Other debt obligations 1,358 1 Equity securities 94,692 25,941 Commodities 5,653 – Investments in funds at NAV 6,465 – Subtotal 242,280 69,644 Derivatives 53,672 47,499 Total $295,952 $117,143 In the table above: • Money market instruments includes commercial paper, certificates of deposit and time deposits, substantially all of which have a maturity of less than one year. • Equity securities includes public and private equities, exchange-traded funds and convertible debentures. Such amounts include investments accounted for at fair value under the fair value option where the firm would otherwise apply the equity method of accounting of $8.49 billion and $7.92 billion as of December 2017 and December 2016, respectively.
Gains and Losses from Market Making and Other Principal Transactions	The table below presents market making revenues by major product type, as well as other principal transactions revenues. Year Ended December $ in millions 2017 2016 2015 Interest rates $ 6,406 $ (1,979 ) $ (1,360 ) Credit 701 1,854 920 Currencies (3,249 ) 6,158 3,345 Equities 3,162 2,873 5,515 Commodities 640 1,027 1,103 Market making 7,660 9,933 9,523 Other principal transactions 5,256 3,200 5,018 Total $12,916 $13,133 $14,541 In the table above: • Gains/(losses) include both realized and unrealized gains and losses, and are primarily related to the firm’s financial instruments owned and financial instruments sold, but not yet purchased, including both derivative and non-derivative • Gains/(losses) exclude related interest income and interest expense. See Note 23 for further information about interest income and interest expense. • Gains/(losses) on other principal transactions are included in the firm’s Investing & Lending segment. See Note 25 for net revenues, including net interest income, by product type for Investing & Lending, as well as the amount of net interest income included in Investing & Lending. • Gains/(losses) are not representative of the manner in which the firm manages its business activities because many of the firm’s market-making and client facilitation strategies utilize financial instruments across various product types. Accordingly, gains or losses in one product type frequently offset gains or losses in other product types. For example, most of the firm’s longer-term derivatives across product types are sensitive to changes in interest rates and may be economically hedged with interest rate swaps. Similarly, a significant portion of the firm’s cash instruments and derivatives across product types has exposure to foreign currencies and may be economically hedged with foreign currency contracts.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Financial Assets Liabilities Summary	The table below presents financial assets and financial liabilities accounted for at fair value under the fair value option or in accordance with other U.S. GAAP. As of December $ in millions 2017 2016 Total level 1 financial assets $155,086 $135,401 Total level 2 financial assets 395,606 419,585 Total level 3 financial assets 19,201 23,280 Investments in funds at NAV 4,596 6,465 Counterparty and cash collateral netting (56,366 ) (87,038 ) Total financial assets at fair value $518,123 $497,693 Total assets $916,776 $860,165 Total level 3 financial assets divided by: Total assets 2.1% 2.7% Total financial assets at fair value 3.7% 4.7% Total level 1 financial liabilities $ 63,589 $ 62,504 Total level 2 financial liabilities 261,719 232,027 Total level 3 financial liabilities 19,620 21,448 Counterparty and cash collateral netting (39,866 ) (44,695 ) Total financial liabilities at fair value $305,062 $271,284 Total level 3 financial liabilities divided by total financial liabilities at fair value 6.4% 7.9% In the table above: • Counterparty netting among positions classified in the same level is included in that level. • Counterparty and cash collateral netting represents the impact on derivatives of netting across levels of the fair value hierarchy.
Total Level 3 Financial Assets	The table below presents a summary of level 3 financial assets. As of December $ in millions 2017 2016 Cash instruments $15,395 $18,035 Derivatives 3,802 5,190 Other financial assets 4 55 Total $19,201 $23,280

Cash Instruments (Tables)

Cash Instruments (Tables)	12 Months Ended
	Dec. 31, 2017
Text Block [Abstract]
Cash Instruments by Level	The tables below present cash instrument assets and liabilities at fair value by level within the fair value hierarchy. As of December 2017 $ in millions Level 1 Level 2 Level 3 Total Assets Money market instruments $ 398 $ 1,209 $ 1 $ 1,608 Government and agency obligations: U.S. 50,796 25,622 – 76,418 Non-U.S. 27,070 6,882 4 33,956 Loans and securities backed by: Commercial real estate – 2,310 1,126 3,436 Residential real estate – 11,325 668 11,993 Corporate loans and debt securities 752 29,661 3,270 33,683 State and municipal obligations – 1,401 70 1,471 Other debt obligations – 1,812 352 2,164 Equity securities 76,044 10,184 9,904 96,132 Commodities – 3,194 – 3,194 Subtotal $155,060 $93,600 $15,395 $264,055 Investments in funds at NAV 4,596 Total cash instrument assets $268,651 Liabilities Government and agency obligations: U.S. $ (17,845 ) $ (66 ) $ – $ (17,911 ) Non-U.S. (21,820 ) (1,491 ) – (23,311 ) Loans and securities backed by commercial real estate – (1 ) – (1 ) Corporate loans and debt securities (2 ) (7,099 ) (52 ) (7,153 ) Other debt obligations – (1 ) – (1 ) Equity securities (23,866 ) – (16 ) (23,882 ) Commodities – (40 ) – (40 ) Total cash instrument liabilities $ (63,533 ) $ (8,698 ) $ (68 ) $ (72,299 ) As of December 2016 $ in millions Level 1 Level 2 Level 3 Total Assets Money market instruments $ 188 $ 1,131 $ – $ 1,319 Government and agency obligations: U.S. 35,254 22,403 – 57,657 Non-U.S. 22,433 6,933 15 29,381 Loans and securities backed by: Commercial real estate – 2,197 1,645 3,842 Residential real estate – 11,350 845 12,195 Corporate loans and debt 215 23,804 4,640 28,659 State and municipal obligations – 960 99 1,059 Other debt obligations – 830 528 1,358 Equity securities 77,276 7,153 10,263 94,692 Commodities – 5,653 – 5,653 Subtotal $135,366 $82,414 $18,035 $235,815 Investments in funds at NAV 6,465 Total cash instrument assets $242,280 Liabilities Government and agency obligations: U.S. $ (16,615 ) $ (12 ) $ – $ (16,627 ) Non-U.S. (19,137 ) (1,364 ) (1 ) (20,502 ) Loans and securities backed by residential real estate – (3 ) – (3 ) Corporate loans and debt (2 ) (6,524 ) (44 ) (6,570 ) Other debt obligations – (1 ) – (1 ) Equity securities (25,768 ) (156 ) (17 ) (25,941 ) Total cash instrument liabilities $ (61,522 ) $ (8,060 ) $ (62 ) $ (69,644 ) In the tables above: • Cash instrument assets and liabilities are included in financial instruments owned and financial instruments sold, but not yet purchased, respectively. • Cash instrument assets are shown as positive amounts and cash instrument liabilities are shown as negative amounts. • Money market instruments includes commercial paper, certificates of deposit and time deposits. • Equity securities includes public and private equities, exchange-traded funds and convertible debentures. • As of both December 2017 and December 2016, substantially all of the firm’s level 3 equity securities consisted of private equity securities. • Total cash instrument assets included collateralized debt obligations (CDOs) and collateralized loan obligations (CLOs) backed by real estate and corporate obligations of $918 million and $461 million in level 2, and $250 million and $624 million in level 3 as of December 2017 and December 2016, respectively.
Fair Value, Cash Instruments, Measurement Inputs, Disclosure	The table below presents the amount of level 3 assets, and ranges and weighted averages of significant unobservable inputs used to value the firm’s level 3 cash instruments. Level 3 Assets and Range of Significant Unobservable $ in millions 2017 2016 Loans and securities backed by commercial real estate Level 3 assets $1,126 $1,645 Yield 4.6% to 22.0% (13.4% ) 3.7% to 23.0% (13.0% ) Recovery rate 14.3% to 89.0% (43.8% ) 8.9% to 99.0% (60.6% ) Duration (years) 0.8 to 6.4 (2.1 ) 0.8 to 6.2 (2.1 ) Loans and securities backed by residential real estate Level 3 assets $668 $845 Yield 2.3% to 15.0% (8.3% ) 0.8% to 15.6% (8.7% ) Cumulative loss rate 12.5% to 43.0% (21.8% ) 8.9% to 47.1% (24.2% ) Duration (years) 0.7 to 14.0 (6.9 ) 1.1 to 16.1 (7.3 ) Corporate loans and debt securities Level 3 assets $3,270 $4,640 Yield 3.6% to 24.5% (12.3% ) 2.5% to 25.0% (10.3% ) Recovery rate 0.0% to 85.3% (62.8% ) 0.0% to 85.0% (56.5% ) Duration (years) 0.5 to 7.6 (3.2 ) 0.6 to 15.7 (2.9 ) Equity securities Level 3 assets $9,904 $10,263 Multiples 1.1x to 30.5x (8.9x ) 0.8x to 19.7x (6.8x ) Discount rate/yield 3.0% to 20.3% (14.0% ) 6.5% to 25.0% (16.0% ) Capitalization rate 4.3% to 12.0% (6.1% ) 4.2% to 12.5% (6.8% ) Other cash instruments Level 3 assets $427 $642 Yield 4.0% to 11.7% (8.4% ) 1.9% to 14.0% (8.8% ) Recovery rate N/A 0.0% to 93.0% (61.4% ) Duration (years) 3.5 to 11.4 (5.1 ) 0.9 to 12.0 (4.3 ) In the table above: • Ranges represent the significant unobservable inputs that were used in the valuation of each type of cash instrument. • Weighted averages are calculated by weighting each input by the relative fair value of the cash instruments. • The ranges and weighted averages of these inputs are not representative of the appropriate inputs to use when calculating the fair value of any one cash instrument. For example, the highest multiple for private equity securities is appropriate for valuing a specific private equity security but may not be appropriate for valuing any other private equity security. Accordingly, the ranges of inputs do not represent uncertainty in, or possible ranges of, fair value measurements of the firm’s level 3 cash instruments. • Increases in yield, discount rate, capitalization rate, duration or cumulative loss rate used in the valuation of the firm’s level 3 cash instruments would result in a lower fair value measurement, while increases in recovery rate or multiples would result in a higher fair value measurement. Due to the distinctive nature of each of the firm’s level 3 cash instruments, the interrelationship of inputs is not necessarily uniform within each product type. • Equity securities includes private equity securities and convertible debentures. • Loans and securities backed by commercial and residential real estate, corporate loans and debt securities and other cash instruments are valued using discounted cash flows, and equity securities are valued using market comparables and discounted cash flows. • The fair value of any one instrument may be determined using multiple valuation techniques. For example, market comparables and discounted cash flows may be used together to determine fair value. Therefore, the level 3 balance encompasses both of these techniques. • Recovery rate was not significant to the valuation of level 3 other cash instrument assets as of December 2017.
Cash Instruments, Level 3 Rollforward	The table below presents a summary of the changes in fair value for level 3 cash instrument assets and liabilities. Year Ended December $ in millions 2017 2016 Total cash instrument assets Beginning balance $18,035 $18,131 Net realized gains/(losses) 419 574 Net unrealized gains/(losses) 1,144 397 Purchases 1,635 3,072 Sales (3,315 ) (2,326 ) Settlements (2,265 ) (3,503 ) Transfers into level 3 2,405 3,405 Transfers out of level 3 (2,663 ) (1,715 ) Ending balance $15,395 $18,035 Total cash instrument liabilities Beginning balance $ (62 ) $ (193 ) Net realized gains/(losses) (8 ) 20 Net unrealized gains/(losses) (28 ) 19 Purchases 97 91 Sales (20 ) (49 ) Settlements (32 ) (7 ) Transfers into level 3 (18 ) (12 ) Transfers out of level 3 3 69 Ending balance $ (68 ) $ (62 ) In the table above: • Changes in fair value are presented for all cash instrument assets and liabilities that are classified in level 3 as of the end of the period. • Net unrealized gains/(losses) relates to instruments that were still held at period-end. • Purchases includes originations and secondary purchases. • If a cash instrument asset or liability was transferred to level 3 during a reporting period, its entire gain or loss for the period is classified in level 3. For level 3 cash instrument assets, increases are shown as positive amounts, while decreases are shown as negative amounts. For level 3 cash instrument liabilities, increases are shown as negative amounts, while decreases are shown as positive amounts. • Level 3 cash instruments are frequently economically hedged with level 1 and level 2 cash instruments and/or level 1, level 2 or level 3 derivatives. Accordingly, gains or losses that are classified in level 3 can be partially offset by gains or losses attributable to level 1 or level 2 cash instruments and/or level 1, level 2 or level 3 derivatives. As a result, gains or losses included in the level 3 rollforward below do not necessarily represent the overall impact on the firm’s results of operations, liquidity or capital resources. The table below disaggregates, by product type, the information for cash instrument assets included in the summary table above. Year Ended December $ in millions 2017 2016 Loans and securities backed by commercial real estate Beginning balance $ 1,645 $ 1,924 Net realized gains/(losses) 35 60 Net unrealized gains/(losses) 71 (19 ) Purchases 176 331 Sales (319 ) (320 ) Settlements (392 ) (617 ) Transfers into level 3 141 510 Transfers out of level 3 (231 ) (224 ) Ending balance $ 1,126 $ 1,645 Loans and securities backed by residential real estate Beginning balance $ 845 $ 1,765 Net realized gains/(losses) 37 60 Net unrealized gains/(losses) 96 26 Purchases 98 298 Sales (246 ) (791 ) Settlements (104 ) (278 ) Transfers into level 3 21 73 Transfers out of level 3 (79 ) (308 ) Ending balance $ 668 $ 845 Corporate loans and debt securities Beginning balance $ 4,640 $ 5,242 Net realized gains/(losses) 145 261 Net unrealized gains/(losses) (13 ) 34 Purchases 666 1,078 Sales (1,003 ) (645 ) Settlements (1,062 ) (1,823 ) Transfers into level 3 1,130 1,023 Transfers out of level 3 (1,233 ) (530 ) Ending balance $ 3,270 $ 4,640 Equity securities Beginning balance $10,263 $ 8,549 Net realized gains/(losses) 185 158 Net unrealized gains/(losses) 982 371 Purchases 624 1,122 Sales (1,702 ) (412 ) Settlements (559 ) (634 ) Transfers into level 3 1,113 1,732 Transfers out of level 3 (1,002 ) (623 ) Ending balance $ 9,904 $10,263 Other cash instruments Beginning balance $ 642 $ 651 Net realized gains/(losses) 17 35 Net unrealized gains/(losses) 8 (15 ) Purchases 71 243 Sales (45 ) (158 ) Settlements (148 ) (151 ) Transfers into level 3 – 67 Transfers out of level 3 (118 ) (30 ) Ending balance $ 427 $ 642
Summary of Cash instruments include Securities Accounted for Available-for-Sale	The table below presents details about cash instruments that are accounted for as available-for-sale. $ in millions Amortized Fair Weighted As of December 2017 Less than 5 years $3,834 $3,800 1.95% Greater than 5 years 5,207 5,222 2.41% Total U.S. government obligations 9,041 9,022 2.22% Less than 5 years 19 19 0.43% Greater than 5 years 233 235 4.62% Total other available-for-sale 252 254 4.30% Total available-for-sale $9,293 $9,276 2.27% As of December 2016 Less than 5 years $ 24 $ 24 0.43% Total U.S. government obligations 24 24 0.43% Less than 5 years 31 31 2.11% Greater than 5 years 34 34 3.85% Total other available-for-sale 65 65 3.03% Total available-for-sale $ 89 $ 89 2.32% In the table above: • U.S. government obligations were classified in level 1 of the fair value hierarchy as of both December 2017 and December 2016. • Other available-for-sale • The gross unrealized gains/(losses) included in accumulated other comprehensive loss related to available-for-sale
Investments in Funds that are Calculated Using Net Asset Value Per Share	The table below presents the fair value of the firm’s investments in funds at NAV and related unfunded commitments. $ in millions Fair Value of Unfunded As of December 2017 Private equity funds $3,478 $ 614 Credit funds 266 985 Hedge funds 223 – Real estate funds 629 201 Total $4,596 $1,800 As of December 2016 Private equity funds $4,628 $1,393 Credit funds 421 166 Hedge funds 410 – Real estate funds 1,006 272 Total $6,465 $1,831

Derivatives and Hedging Activ43

Derivatives and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair Value of Derivatives on a Gross Basis	The tables below present the gross fair value and the notional amounts of derivative contracts by major product type, the amounts of counterparty and cash collateral netting in the consolidated statements of financial condition, as well as cash and securities collateral posted and received under enforceable credit support agreements that do not meet the criteria for netting under U.S. GAAP. As of December 2017 As of December 2016 $ in millions Derivative Derivative Derivative Derivative Not accounted for as hedges Exchange-traded $ 554 $ 644 $ 443 $ 382 OTC-cleared 5,392 2,773 189,471 168,946 Bilateral OTC 274,986 249,750 309,037 289,491 Total interest rates 280,932 253,167 498,951 458,819 OTC-cleared 5,727 5,670 4,837 4,811 Bilateral OTC 16,966 15,600 21,530 18,770 Total credit 22,693 21,270 26,367 23,581 Exchange-traded 23 363 36 176 OTC-cleared 988 847 796 798 Bilateral OTC 94,481 95,127 111,032 106,318 Total currencies 95,492 96,337 111,864 107,292 Exchange-traded 4,135 3,854 3,219 3,187 OTC-cleared 197 197 189 197 Bilateral OTC 9,748 12,097 8,945 10,487 Total commodities 14,080 16,148 12,353 13,871 Exchange-traded 10,552 10,335 8,576 8,064 Bilateral OTC 40,735 45,253 39,516 45,826 Total equities 51,287 55,588 48,092 53,890 Subtotal 464,484 442,510 697,627 657,453 Accounted for as hedges OTC-cleared 21 – 4,347 156 Bilateral OTC 2,309 3 4,180 10 Total interest rates 2,330 3 8,527 166 OTC-cleared 15 30 30 40 Bilateral OTC 34 114 55 64 Total currencies 49 144 85 104 Subtotal 2,379 147 8,612 270 Total gross fair value $ 466,863 $ 442,657 $ 706,239 $ 657,723 Offset in consolidated statements of financial condition Exchange-traded $ (12,963 ) $ (12,963 ) $ (9,727 ) $ (9,727 ) OTC-cleared (9,267 ) (9,267 ) (171,864 ) (171,864 ) Bilateral OTC (341,824 ) (341,824 ) (385,647 ) (385,647 ) Counterparty netting (364,054 ) (364,054 ) (567,238 ) (567,238 ) OTC-cleared (2,423 ) (180 ) (27,560 ) (2,940 ) Bilateral OTC (53,049 ) (38,792 ) (57,769 ) (40,046 ) Cash collateral netting (55,472 ) (38,972 ) (85,329 ) (42,986 ) Total amounts offset $(419,526 ) $(403,026 ) $(652,567 ) $(610,224 ) Included in consolidated statements of financial condition Exchange-traded $ 2,301 $ 2,233 $ 2,547 $ 2,082 OTC-cleared 650 70 246 144 Bilateral OTC 44,386 37,328 50,879 45,273 Total $ 47,337 $ 39,631 $ 53,672 $ 47,499 Not offset in consolidated statements of financial condition Cash collateral $ (602 ) $ (2,375 ) $ (535 ) $ (2,085 ) Securities collateral (13,947 ) (8,722 ) (15,518 ) (10,224 ) Total $ 32,788 $ 28,534 $ 37,619 $ 35,190 Notional Amounts as of December $ in millions 2017 2016 Not accounted for as hedges Exchange-traded $10,212,510 $ 4,425,532 OTC-cleared 14,739,556 16,646,145 Bilateral OTC 12,862,328 11,131,442 Total interest rates 37,814,394 32,203,119 OTC-cleared 386,163 378,432 Bilateral OTC 868,226 1,045,913 Total credit 1,254,389 1,424,345 Exchange-traded 10,450 13,800 OTC-cleared 98,549 62,799 Bilateral OTC 7,331,516 5,576,748 Total currencies 7,440,515 5,653,347 Exchange-traded 239,749 227,707 OTC-cleared 3,925 3,506 Bilateral OTC 250,547 196,899 Total commodities 494,221 428,112 Exchange-traded 655,485 605,335 Bilateral OTC 1,127,812 959,112 Total equities 1,783,297 1,564,447 Subtotal 48,786,816 41,273,370 Accounted for as hedges OTC-cleared 52,785 55,328 Bilateral OTC 15,188 36,607 Total interest rates 67,973 91,935 OTC-cleared 2,210 1,703 Bilateral OTC 8,347 8,544 Total currencies 10,557 10,247 Subtotal 78,530 102,182 Total notional amounts $48,865,346 $41,375,552 In the tables above: • Gross fair values exclude the effects of both counterparty netting and collateral, and therefore are not representative of the firm’s exposure. • Where the firm has received or posted collateral under credit support agreements, but has not yet determined such agreements are enforceable, the related collateral has not been netted. • Notional amounts, which represent the sum of gross long and short derivative contracts, provide an indication of the volume of the firm’s derivative activity and do not represent anticipated losses. • Total gross fair value of derivatives included derivative assets and derivative liabilities of $11.24 billion and $13.00 billion, respectively, as of December 2017, and derivative assets and derivative liabilities of $19.92 billion and $20.79 billion, respectively, as of December 2016, which are not subject to an enforceable netting agreement or are subject to a netting agreement that the firm has not yet determined to be enforceable.
Fair Value of Derivatives by Level	The tables below present the fair value of derivatives on a gross basis by level and major product type, as well as the impact of netting, included in the consolidated statements of financial condition. As of December 2017 $ in millions Level 1 Level 2 Level 3 Total Assets Interest rates $ 18 $ 282,933 $ 311 $ 283,262 Credit – 19,053 3,640 22,693 Currencies – 95,401 140 95,541 Commodities – 13,727 353 14,080 Equities 8 50,870 409 51,287 Gross fair value 26 461,984 4,853 466,863 Counterparty netting in levels – (362,109 ) (1,051 ) (363,160 ) Subtotal $ 26 $ 99,875 $ 3,802 $ 103,703 Cross-level counterparty netting (894 ) Cash collateral netting (55,472 ) Net fair value $ 47,337 Liabilities Interest rates $ (28 ) $(252,421 ) $ (721 ) $(253,170 ) Credit – (19,135 ) (2,135 ) (21,270 ) Currencies – (96,160 ) (321 ) (96,481 ) Commodities – (15,842 ) (306 ) (16,148 ) Equities (28 ) (53,902 ) (1,658 ) (55,588 ) Gross fair value (56 ) (437,460 ) (5,141 ) (442,657 ) Counterparty netting in levels – 362,109 1,051 363,160 Subtotal $ (56 ) $ (75,351 ) $(4,090 ) $ (79,497 ) Cross-level counterparty netting 894 Cash collateral netting 38,972 Net fair value $ (39,631 ) As of December 2016 $ in millions Level 1 Level 2 Level 3 Total Assets Interest rates $ 46 $ 506,818 $ 614 $ 507,478 Credit – 21,388 4,979 26,367 Currencies – 111,762 187 111,949 Commodities – 11,950 403 12,353 Equities 1 47,667 424 48,092 Gross fair value 47 699,585 6,607 706,239 Counterparty netting in levels (12 ) (564,100 ) (1,417 ) (565,529 ) Subtotal $ 35 $ 135,485 $ 5,190 $ 140,710 Cross-level counterparty netting (1,709 ) Cash collateral netting (85,329 ) Net fair value $ 53,672 Liabilities Interest rates $ (27 ) $(457,963 ) $ (995 ) $(458,985 ) Credit – (21,106 ) (2,475 ) (23,581 ) Currencies – (107,212 ) (184 ) (107,396 ) Commodities – (13,541 ) (330 ) (13,871 ) Equities (967 ) (49,083 ) (3,840 ) (53,890 ) Gross fair value (994 ) (648,905 ) (7,824 ) (657,723 ) Counterparty netting in levels 12 564,100 1,417 565,529 Subtotal $(982 ) $ (84,805 ) $(6,407 ) $ (92,194 ) Cross-level counterparty netting 1,709 Cash collateral netting 42,986 Net fair value $ (47,499 )
Fair Value, Derivatives, Measurement Inputs, Disclosure	The table below presents the amount of level 3 assets (liabilities), and ranges, averages and medians of significant unobservable inputs used to value the firm’s level 3 derivatives. Level 3 Assets (Liabilities) and Range of Significant $ in millions 2017 2016 Interest rates, net $(410) $(381) Correlation (10)% to 95% (71%/79%) (10)% to 86% (56%/60%) Volatility (bps) 31 to 150 (84/78) 31 to 151 (84/57) Credit, net $1,505 $2,504 Correlation 28% to 84% (61%/60%) 35% to 91% (65%/68%) Credit spreads (bps) 1 to 633 (69/42) 1 to 993 (122/73) Upfront credit points 0 to 97 (42/38) 0 to 100 (43/35) Recovery rates 22% to 73% (68%/73%) 1% to 97% (58%/70%) Currencies, net $(181) $3 Correlation 49% to 72% (61%/62%) 25% to 70% (50%/55%) Commodities, net $47 $73 Volatility 9% to 79% (24%/24%) 13% to 68% (33%/33%) Natural gas spread $(2.38) to $3.34 ($(0.22)/$(0.12)) $(1.81) to $4.33 ($(0.14)/$(0.05)) Oil spread $(2.86) to $23.61 ($6.47/$2.35) $(19.72) to $64.92 Equities, net $(1,249) $(3,416) Correlation (36)% to 94% (50%/52%) (39)% to 88% (41%/41%) Volatility 4% to 72% (24%/22%) 5% to 72% (24%/23%)
Fair Value of Derivatives, Level 3 Rollforward	The table below presents a summary of the changes in fair value for all level 3 derivatives. Year Ended December $ in millions 2017 2016 Total level 3 derivatives Beginning balance $(1,217 ) $ 495 Net realized gains/(losses) (119 ) (37 ) Net unrealized gains/(losses) (436 ) 777 Purchases 301 115 Sales (611 ) (3,557 ) Settlements 1,891 782 Transfers into level 3 (39 ) 352 Transfers out of level 3 (58 ) (144 ) Ending balance $ (288 ) $(1,217 ) The table below disaggregates, by major product type, the information for level 3 derivatives included in the summary table above. Year Ended December $ in millions 2017 2016 Interest rates, net Beginning balance $ (381 ) $ (398 ) Net realized gains/(losses) (62 ) (41 ) Net unrealized gains/(losses) 20 (138 ) Purchases 4 5 Sales (14 ) (3 ) Settlements 30 36 Transfers into level 3 (12 ) 195 Transfers out of level 3 5 (37 ) Ending balance $ (410 ) $ (381 ) Credit, net Beginning balance $ 2,504 $ 2,793 Net realized gains/(losses) 42 – Net unrealized gains/(losses) (188 ) 196 Purchases 20 20 Sales (27 ) (73 ) Settlements (739 ) (516 ) Transfers into level 3 3 179 Transfers out of level 3 (110 ) (95 ) Ending balance $ 1,505 $ 2,504 Currencies, net Beginning balance $ 3 $ (34 ) Net realized gains/(losses) (39 ) (30 ) Net unrealized gains/(losses) (192 ) (42 ) Purchases 4 14 Sales (3 ) (2 ) Settlements 62 90 Transfers into level 3 (9 ) 1 Transfers out of level 3 (7 ) 6 Ending balance $ (181 ) $ 3 Commodities, net Beginning balance $ 73 $ (262 ) Net realized gains/(losses) (4 ) (23 ) Net unrealized gains/(losses) 216 101 Purchases 102 24 Sales (301 ) (119 ) Settlements (27 ) 391 Transfers into level 3 (25 ) (23 ) Transfers out of level 3 13 (16 ) Ending balance $ 47 $ 73 Equities, net Beginning balance $(3,416 ) $(1,604 ) Net realized gains/(losses) (56 ) 57 Net unrealized gains/(losses) (292 ) 660 Purchases 171 52 Sales (266 ) (3,360 ) Settlements 2,565 781 Transfers into level 3 4 – Transfers out of level 3 41 (2 ) Ending balance $(1,249 ) $(3,416 )
OTC Derivatives by Product Type and Tenor	The table below presents the fair values of OTC derivative assets and liabilities by tenor and major product type. $ in millions Less than 1 - 5 Greater than Total As of December 2017 Assets Interest rates $ 3,717 $15,445 $57,200 $ 76,362 Credit 760 4,079 3,338 8,177 Currencies 12,184 6,219 7,245 25,648 Commodities 3,175 2,526 181 5,882 Equities 4,969 5,607 1,387 11,963 Counterparty netting in tenors (3,719 ) (4,594 ) (2,807 ) (11,120 ) Subtotal $21,086 $29,282 $66,544 $116,912 Cross-tenor counterparty netting (16,404 ) Cash collateral netting (55,472 ) Total $ 45,036 Liabilities Interest rates $ 4,517 $ 8,471 $33,193 $ 46,181 Credit 2,078 3,588 1,088 6,754 Currencies 14,326 7,119 4,802 26,247 Commodities 3,599 2,167 2,465 8,231 Equities 6,453 6,647 3,381 16,481 Counterparty netting in tenors (3,719 ) (4,594 ) (2,807 ) (11,120 ) Subtotal $27,254 $23,398 $42,122 $ 92,774 Cross-tenor counterparty netting (16,404 ) Cash collateral netting (38,972 ) Total $ 37,398 As of December 2016 Assets Interest rates $ 5,845 $18,376 $79,507 $103,728 Credit 1,763 2,695 4,889 9,347 Currencies 18,344 8,292 8,428 35,064 Commodities 3,273 1,415 179 4,867 Equities 3,141 9,249 1,341 13,731 Counterparty netting in tenors (3,543 ) (5,550 ) (3,794 ) (12,887 ) Subtotal $28,823 $34,477 $90,550 $153,850 Cross-tenor counterparty netting (17,396 ) Cash collateral netting (85,329 ) Total $ 51,125 Liabilities Interest rates $ 5,679 $10,814 $38,812 $ 55,305 Credit 2,060 3,328 1,167 6,555 Currencies 14,720 9,771 5,879 30,370 Commodities 2,546 1,555 2,315 6,416 Equities 7,000 10,426 2,614 20,040 Counterparty netting in tenors (3,543 ) (5,550 ) (3,794 ) (12,887 ) Subtotal $28,462 $30,344 $46,993 $105,799 Cross-tenor counterparty netting (17,396 ) Cash collateral netting (42,986 ) Total $ 45,417
Credit Derivatives	The table below presents certain information about credit derivatives. Credit Spread on Underlier (basis points) $ in millions 0 - 250 251 - 501 - Greater Total As of December 2017 Maximum Payout/Notional Amount of Written Credit Derivatives by Tenor Less than 1 year $182,446 $ 8,531 $ 705 $ 4,067 $195,749 1 – 5 years 335,872 10,201 8,747 7,553 362,373 Greater than 5 years 49,440 2,142 817 519 52,918 Total $567,758 $20,874 $10,269 $12,139 $611,040 Maximum Payout/Notional Amount of Purchased Credit Derivatives Offsetting $492,325 $13,424 $ 9,395 $10,663 $525,807 Other 99,861 14,483 1,777 1,442 117,563 Fair Value of Written Credit Derivatives Asset $ 14,317 $ 513 $ 208 $ 155 $ 15,193 Liability 896 402 752 3,920 5,970 Net asset/(liability) $ 13,421 $ 111 $ (544 ) $ (3,765 ) $ 9,223 As of December 2016 Maximum Payout/Notional Amount of Written Credit Derivatives by Tenor Less than 1 year $207,727 $ 5,819 $ 1,016 $ 8,629 $223,191 1 – 5 years 375,208 17,255 8,643 7,986 409,092 Greater than 5 years 52,977 3,928 1,045 233 58,183 Total $635,912 $27,002 $10,704 $16,848 $690,466 Maximum Payout/Notional Amount of Purchased Credit Derivatives Offsetting $558,305 $20,588 $10,133 $15,186 $604,212 Other 119,509 7,712 1,098 1,446 129,765 Fair Value of Written Credit Derivatives Asset $ 13,919 $ 606 $ 187 $ 45 $ 14,757 Liability 2,436 902 809 5,686 9,833 Net asset/(liability) $ 11,483 $ (296 ) $ (622 ) $ (5,641 ) $ 4,924
Bifurcated Embedded Derivatives	The table below presents the fair value and the notional amount of derivatives that have been bifurcated from their related borrowings. As of December $ in millions 2017 2016 Fair value of assets $ 882 $ 676 Fair value of liabilities 1,200 864 Net liability $ 318 $ 188 Notional amount $9,578 $8,726
Derivatives with Credit-Related Contingent Features	The table below presents the aggregate fair value of net derivative liabilities under such agreements (excluding application of collateral posted to reduce these liabilities), the related aggregate fair value of the assets posted as collateral and the additional collateral or termination payments that could have been called by counterparties in the event of a one-notch two-notch As of December $ in millions 2017 2016 Net derivative liabilities under bilateral agreements $29,877 $32,927 Collateral posted $25,329 $27,840 Additional collateral or termination payments: One-notch $ 358 $ 677 Two-notch $ 1,856 $ 2,216
Gain (Loss) from Interest Rate Hedges and Related Hedged Borrowings and Deposits	The table below presents the gains/(losses) from interest rate derivatives accounted for as hedges, the related hedged borrowings and deposits, and the hedge ineffectiveness on these derivatives, which primarily consists of amortization of prepaid credit spreads resulting from the passage of time. Year Ended December $ in millions 2017 2016 2015 Interest rate hedges $(2,867 ) $(1,480 ) $(1,613 ) Hedged borrowings and deposits 2,183 834 898 Hedge ineffectiveness $ (684 ) $ (646 ) $ (715 )
Gains and Losses on Net Investment Hedges	The table below presents the gains/(losses) from net investment hedging. Year Ended December $ in millions 2017 2016 2015 Hedges: Foreign currency forward contract $(805 ) $135 $695 Foreign currency-denominated debt $ (67 ) $ (85 ) $ (9 )

Fair Value Option (Tables)

Fair Value Option (Tables)	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Financial Assets and Financial Liabilities by Level	The table below presents, by level within the fair value hierarchy, other financial assets and financial liabilities at fair value, substantially all of which are accounted for at fair value under the fair value option. $ in millions Level 1 Level 2 Level 3 Total As of December 2017 Assets Securities purchased under agreements to resell $ – $ 120,420 $ – $ 120,420 Securities borrowed – 78,189 – 78,189 Receivables from customers and counterparties – 3,522 4 3,526 Total $ – $ 202,131 $ 4 $ 202,135 Liabilities Deposits $ – $ (19,934 ) $ (2,968 ) $ (22,902 ) Securities sold under agreements to repurchase – (84,681 ) (37 ) (84,718 ) Securities loaned – (5,357 ) – (5,357 ) Other secured financings – (23,956 ) (389 ) (24,345 ) Unsecured borrowings: Short-term – (12,310 ) (4,594 ) (16,904 ) Long-term – (31,204 ) (7,434 ) (38,638 ) Other liabilities and accrued – (228 ) (40 ) (268 ) Total $ – $(177,670 ) $(15,462 ) $(193,132 ) As of December 2016 Assets Securities purchased under agreements to resell $ – $ 116,077 $ – $ 116,077 Securities borrowed – 82,398 – 82,398 Receivables from customers and counterparties – 3,211 55 3,266 Total $ – $ 201,686 $ 55 $ 201,741 Liabilities Deposits $ – $ (10,609 ) $ (3,173 ) $ (13,782 ) Securities sold under agreements to repurchase – (71,750 ) (66 ) (71,816 ) Securities loaned – (2,647 ) – (2,647 ) Other secured financings – (20,516 ) (557 ) (21,073 ) Unsecured borrowings: Short-term – (10,896 ) (3,896 ) (14,792 ) Long-term – (22,185 ) (7,225 ) (29,410 ) Other liabilities and accrued – (559 ) (62 ) (621 ) Total $ – $(139,162 ) $(14,979 ) $(154,141 )
Level 3 Rollforward	The table below presents a summary of the changes in fair value for level 3 other financial assets and financial liabilities accounted for at fair value. Year Ended December $ in millions 2017 2016 Total other financial assets Beginning balance $ 55 $ 45 Net realized gains/(losses) – 6 Net unrealized gains/(losses) – 1 Purchases 1 10 Settlements (52 ) (7 ) Ending balance $ 4 $ 55 Total other financial liabilities Beginning balance $(14,979 ) $(11,244 ) Net realized gains/(losses) (362 ) (99 ) Net unrealized gains/(losses) (1,047 ) (7 ) Purchases (3 ) (8 ) Sales 1 – Issuances (8,382 ) (10,236 ) Settlements 6,859 5,983 Transfers into level 3 (611 ) (759 ) Transfers out of level 3 3,062 1,391 Ending balance $(15,462 ) $(14,979 ) The table below disaggregates, by the consolidated statements of financial condition line items, the information for other financial liabilities included in the summary table above. Year Ended December $ in millions 2017 2016 Deposits Beginning balance $(3,173 ) $(2,215 ) Net realized gains/(losses) (6 ) (22 ) Net unrealized gains/(losses) (239 ) (89 ) Issuances (661 ) (993 ) Settlements 232 146 Transfers out of level 3 879 – Ending balance $(2,968 ) $(3,173 ) Securities sold under agreements to repurchase Beginning balance $ (66 ) $ (71 ) Net unrealized gains/(losses) (1 ) (6 ) Settlements 30 11 Ending balance $ (37 ) $ (66 ) Other secured financings Beginning balance $ (557 ) $ (549 ) Net realized gains/(losses) 17 (8 ) Net unrealized gains/(losses) (40 ) (3 ) Purchases (3 ) (5 ) Sales 1 – Issuances (32 ) (150 ) Settlements 171 273 Transfers into level 3 (12 ) (117 ) Transfers out of level 3 66 2 Ending balance $ (389 ) $ (557 ) Unsecured short-term borrowings Beginning balance $(3,896 ) $(4,133 ) Net realized gains/(losses) (332 ) (57 ) Net unrealized gains/(losses) (230 ) (115 ) Issuances (4,599 ) (3,837 ) Settlements 3,675 3,492 Transfers into level 3 (131 ) (370 ) Transfers out of level 3 919 1,124 Ending balance $(4,594 ) $(3,896 ) Unsecured long-term borrowings Beginning balance $(7,225 ) $(4,224 ) Net realized gains/(losses) (60 ) (27 ) Net unrealized gains/(losses) (559 ) 190 Purchases – (3 ) Issuances (3,071 ) (5,201 ) Settlements 2,751 2,047 Transfers into level 3 (468 ) (272 ) Transfers out of level 3 1,198 265 Ending balance $(7,434 ) $(7,225 ) Other liabilities and accrued expenses Beginning balance $ (62 ) $ (52 ) Net realized gains/(losses) 19 15 Net unrealized gains/(losses) 22 16 Issuances (19 ) (55 ) Settlements – 14 Ending balance $ (40 ) $ (62 )
Gains and Losses on Other Financial Assets and Financial Liabilities at Fair Value	The table below presents the gains and losses recognized in earnings as a result of the firm electing to apply the fair value option to certain financial assets and financial liabilities. Year Ended December $ in millions 2017 2016 2015 Unsecured short-term borrowings $(2,585 ) $(1,028 ) $ 346 Unsecured long-term borrowings (1,357 ) 584 771 Other liabilities and accrued expenses 222 (55 ) (684 ) Other (620 ) (630 ) (217 ) Total $(4,340 ) $(1,129 ) $ 216
Loans and Lending Commitments	The table below presents the difference between the aggregate fair value and the aggregate contractual principal amount for loans and long-term receivables for which the fair value option was elected. As of December $ in millions 2017 2016 Performing loans and long-term receivables Aggregate contractual principal in excess of fair value $ 952 $ 478 Loans on nonaccrual status and/or more than 90 days past due Aggregate contractual principal in excess of fair value $5,266 $8,101 Aggregate fair value of loans on nonaccrual status and/or more than 90 days past due $2,104 $2,138
Summary of DVA Losses on Financial Liabilities	The table below presents details about the net DVA losses on such financial liabilities. Year Ended December $ in millions 2017 2016 DVA (pre-tax) $(1,232 ) $(844 ) DVA (net of tax) $ (807 ) $(544 ) In the table above: • DVA (net of tax) is included in debt valuation adjustment in the consolidated statements of comprehensive income. • The gains/(losses) reclassified to earnings from accumulated other comprehensive loss upon extinguishment of such financial liabilities were not material for both 2017 and 2016.

Loans Receivable (Tables)

Loans Receivable (Tables)	12 Months Ended
	Dec. 31, 2017
Receivables [Abstract]
Summary of Loans Receivable	The table below presents details about loans receivable. As of December $ in millions 2017 2016 Corporate loans $30,749 $24,837 Loans to PWM clients 16,591 13,828 Loans backed by commercial real estate 7,987 4,761 Loans backed by residential real estate 6,234 3,865 Marcus loans 1,912 208 Other loans 3,263 2,682 Total loans receivable, gross 66,736 50,181 Allowance for loan losses (803 ) (509 ) Total loans receivable $65,933 $49,672
Schedule of Lending Commitment Held for Investment and Accounted for on Accrual Basis	The table below presents details about lending commitments that are held for investment and accounted for on an accrual basis. As of December $ in millions 2017 2016 Corporate $118,553 $93,407 Other 5,951 4,638 Total $124,504 $98,045
Summary of Purchased Credit Impaired (PCI) Loans	The table below presents details about PCI loans. As of December $ in millions 2017 2016 Loans backed by commercial real estate $1,116 $1,444 Loans backed by residential real estate 3,327 2,508 Other loans 10 18 Total gross carrying value $4,453 $3,970 Total outstanding principal balance $9,512 $8,515 Total accretable yield $ 662 $ 526 The table below presents details about PCI loans at the time of acquisition. Year Ended December $ in millions 2017 2016 2015 Fair value $1,769 $2,514 $2,267 Expected cash flows $1,961 $2,818 $2,499 Contractually required cash flows $4,092 $6,389 $6,472
Summary of Other Loans Receivable	The table below presents gross loans receivable (excluding PCI and Marcus loans of $6.37 billion and $4.18 billion as of December 2017 and December 2016, respectively) and lending commitments by the firm’s internally determined public rating agency equivalent and by regulatory risk rating. $ in millions Loans Lending Total Credit Rating Equivalent As of December 2017 Investment-grade $24,192 $ 89,409 $113,601 Non-investment-grade 36,179 35,095 71,274 Total $60,371 $124,504 $184,875 As of December 2016 Investment-grade $18,434 $ 72,323 $ 90,757 Non-investment-grade 27,569 25,722 53,291 Total $46,003 $ 98,045 $144,048 Regulatory Risk Rating As of December 2017 Non-criticized/pass $56,720 $119,427 $176,147 Criticized 3,651 5,077 8,728 Total $60,371 $124,504 $184,875 As of December 2016 Non-criticized/pass $42,938 $ 94,966 $137,904 Criticized 3,065 3,079 6,144 Total $46,003 $ 98,045 $144,048
Summary of Gross Loans Receivable and Lending Commitment by Impairment Methodology	The tables below present gross loans receivable and lending commitments by impairment methodology. As of December 2017 $ in millions Specific Portfolio PCI Total Loans Receivable Corporate loans $377 $ 30,372 $ – $ 30,749 Loans to PWM clients 163 16,428 – 16,591 Loans backed by: Commercial real estate – 6,871 1,116 7,987 Residential real estate 231 2,676 3,327 6,234 Marcus loans – 1,912 – 1,912 Other loans 74 3,179 10 3,263 Total $845 $ 61,438 $4,453 $ 66,736 Lending Commitments Corporate $ 53 $118,500 $ – $118,553 Other – 5,951 – 5,951 Total $ 53 $124,451 $ – $124,504 As of December 2016 $ in millions Specific Portfolio PCI Total Loans Receivable Corporate loans $327 $ 24,510 $ – $ 24,837 Loans to PWM clients 77 13,751 – 13,828 Loans backed by: Commercial real estate – 3,317 1,444 4,761 Residential real estate – 1,357 2,508 3,865 Marcus loans – 208 – 208 Other loans – 2,664 18 2,682 Total $404 $ 45,807 $3,970 $ 50,181 Lending Commitments Corporate $211 $ 93,196 $ – $ 93,407 Other – 4,638 – 4,638 Total $211 $ 97,834 $ – $ 98,045
Summary of Changes in Allowance for Loan Losses and Allowance for Losses on Lending Commitments	The table below presents changes in the allowance for loan losses and the allowance for losses on lending commitments, as well as details by impairment methodology. Year Ended December 2017 Year Ended December 2016 $ in millions Loans Lending Loans Lending Changes in the allowance for losses Beginning balance $ 509 $212 $414 $188 Charge-offs (203 ) – (8 ) – Provision 574 83 138 44 Other (77 ) (21 ) (35 ) (20 ) Ending balance $ 803 $274 $509 $212 Allowance for losses by impairment methodology Specific $ 119 $ 14 $127 $ 39 Portfolio 518 260 370 173 PCI 166 – 12 – Total $ 803 $274 $509 $212

Collateralized Agreements and46

Collateralized Agreements and Financings (Tables)	12 Months Ended
	Dec. 31, 2017
Text Block [Abstract]
Resale and Repurchase Agreements and Securities Borrowed and Loaned Transactions	The table below presents the carrying value of resale and repurchase agreements and securities borrowed and loaned transactions. As of December $ in millions 2017 2016 Securities purchased under agreements to resell $120,822 $116,925 Securities borrowed $190,848 $184,600 Securities sold under agreements to repurchase $ 84,718 $ 71,816 Securities loaned $ 14,793 $ 7,524
Offsetting Arrangements	The table below presents the gross and net resale and repurchase agreements and securities borrowed and loaned transactions, and the related amount of counterparty netting included in the consolidated statements of financial condition, as well as the amounts of counterparty netting and cash and securities collateral, not offset in the consolidated statements of financial condition. Assets Liabilities $ in millions Resale Securities Repurchase Securities As of December 2017 Included in consolidated statements of financial condition Gross carrying value $ 209,972 $ 195,783 $173,868 $19,728 Counterparty netting (89,150 ) (4,935 ) (89,150 ) (4,935 ) Total 120,822 190,848 84,718 14,793 Amounts not offset Counterparty netting (5,441 ) (4,412 ) (5,441 ) (4,412 ) Collateral (113,305 ) (177,679 ) (76,793 ) (9,731 ) Total $ 2,076 $ 8,757 $ 2,484 $ 650 As of December 2016 Included in consolidated statements of financial condition Gross carrying value $ 173,561 $ 189,571 $128,452 $12,495 Counterparty netting (56,636 ) (4,971 ) (56,636 ) (4,971 ) Total 116,925 184,600 71,816 7,524 Amounts not offset Counterparty netting (8,319 ) (4,045 ) (8,319 ) (4,045 ) Collateral (107,148 ) (170,625 ) (62,081 ) (3,087 ) Total $ 1,458 $ 9,930 $ 1,416 $ 392
Schedule of Gross Carrying Value of Repurchase Agreements and Securities Loaned by Class of Collateral Pledged	The table below presents the gross carrying value of repurchase agreements and securities loaned by class of collateral pledged. $ in millions Repurchase Securities As of December 2017 Money market instruments $ 97 $ – U.S. government and agency obligations 80,591 – Non-U.S. 73,031 2,245 Securities backed by commercial real estate 43 – Securities backed by residential real estate 338 – Corporate debt securities 7,140 1,145 State and municipal obligations – – Other debt obligations 55 – Equity securities 12,573 16,338 Total $173,868 $19,728 As of December 2016 Money market instruments $ 317 $ – U.S. government and agency obligations 47,207 115 Non-U.S. 56,156 1,846 Securities backed by commercial real estate 208 – Securities backed by residential real estate 122 – Corporate debt securities 8,297 39 State and municipal obligations 831 – Other debt obligations 286 – Equity securities 15,028 10,495 Total $128,452 $12,495
Schedule of Gross Carrying Value of Repurchase Agreements and Securities Loaned by Maturity Date	The table below presents the gross carrying value of repurchase agreements and securities loaned by maturity date. As of December 2017 $ in millions Repurchase Securities No stated maturity and overnight $ 65,280 $ 9,389 2 - 30 days 59,344 4,967 31 - 90 days 13,489 756 91 days - 1 year 21,392 2,302 Greater than 1 year 14,363 2,314 Total $173,868 $19,728
Other Secured Financings	The table below presents information about other secured financings. $ in millions U.S. Dollar Non-U.S. Dollar Total As of December 2017 Other secured financings (short-term): At fair value $ 7,704 $ 6,856 $14,560 At amortized cost $ – $ 336 $ 336 Weighted average interest rates –% 2.61% Other secured financings (long-term): At fair value $ 6,779 $ 3,006 $ 9,785 At amortized cost $ 107 $ – $ 107 Weighted average interest rates 3.89% –% Total $14,590 $10,198 $24,788 Other secured financings collateralized by: Financial instruments $12,454 $ 9,870 $22,324 Other assets $ 2,136 $ 328 $ 2,464 As of December 2016 Other secured financings (short-term): At fair value $ 9,380 $ 3,738 $13,118 At amortized cost $ – $ – $ – Weighted average interest rates –% –% Other secured financings (long-term): At fair value $ 5,562 $ 2,393 $ 7,955 At amortized cost $ 145 $ 305 $ 450 Weighted average interest rates 4.06% 2.16% Total $15,087 $ 6,436 $21,523 Other secured financings collateralized by: Financial instruments $13,858 $ 5,974 $19,832 Other assets $ 1,229 $ 462 $ 1,691
Other Secured Financings by Maturity Date	The table below presents other secured financings by maturity date. $ in millions As of December 2017 Other secured financings (short-term) $14,896 Other secured financings (long-term): 2019 3,439 2020 1,555 2021 551 2022 2,468 2023 - thereafter 1,879 Total other secured financings (long-term) 9,892 Total other secured financings $24,788
Financial Instruments Received as Collateral and Repledged	The table below presents financial instruments at fair value received as collateral that were available to be delivered or repledged and were delivered or repledged by the firm. As of December $ in millions 2017 2016 Collateral available to be delivered or repledged $763,984 $634,609 Collateral that was delivered or repledged $599,565 $495,717 In the table above, as of December 2017 and December 2016, collateral available to be delivered or repledged excludes $1.52 billion and $15.47 billion, respectively, of securities received under resale agreements and securities borrowed transactions that contractually had the right to be delivered or repledged, but were segregated for regulatory and other purposes.
Financial Instruments Owned, at Fair Value and Other Assets Pledged as Collateral	The table below presents information about assets pledged. As of December $ in millions 2017 2016 Financial instruments owned pledged to counterparties that: Had the right to deliver or repledge $ 50,335 $ 51,278 Did not have the right to deliver or repledge $ 78,656 $ 61,099 Other assets pledged to counterparties that did not have the right to deliver or repledge $ 4,838 $ 3,287

Securitization Activities (Tabl

Securitization Activities (Tables)	12 Months Ended
	Dec. 31, 2017
Transfers and Servicing [Abstract]
Amount of Financial Assets Securitized and Cash Flows Received on Retained Interests	The table below presents the amount of financial assets securitized and the cash flows received on retained interests in securitization entities in which the firm had continuing involvement as of the end of the period. Year Ended December $ in millions 2017 2016 2015 Residential mortgages $18,142 $12,164 $10,479 Commercial mortgages 7,872 233 6,043 Other financial assets 481 181 – Total $26,495 $12,578 $16,522 Retained interests cash flows $ 264 $ 189 $ 174
Firms Continuing Involvement in Securitization Entities to Which Firm Sold Assets	The table below presents the firm’s continuing involvement in nonconsolidated securitization entities to which the firm sold assets, as well as the total outstanding principal amount of transferred assets in which the firm has continuing involvement. $ in millions Outstanding Principal Amount Retained Interests Purchased Interests As of December 2017 U.S. government agency-issued collateralized mortgage obligations $20,232 $1,120 $16 Other residential mortgage-backed 10,558 711 17 Other commercial mortgage-backed 7,916 228 7 Corporate debt and other asset-backed 2,108 56 1 Total $40,814 $2,115 $41 As of December 2016 U.S. government agency-issued collateralized mortgage obligations $25,140 $ 953 $24 Other residential mortgage-backed 3,261 540 6 Other commercial mortgage-backed 357 15 – Corporate debt and other asset-backed 2,284 56 6 Total $31,042 $1,564 $36 In the table above: • The outstanding principal amount is presented for the purpose of providing information about the size of the securitization entities and is not representative of the firm’s risk of loss. • The firm’s risk of loss from retained or purchased interests is limited to the carrying value of these interests. • Purchased interests represent senior and subordinated interests, purchased in connection with secondary market-making activities, in securitization entities in which the firm also holds retained interests. • Substantially all of the total outstanding principal amount and total retained interests relate to securitizations during 2012 and thereafter. • The fair value of retained interests was $2.13 billion and $1.58 billion as of December 2017 and December 2016, respectively.
Weighted Average Key Economic Assumptions Used in Measuring Fair Value of Firm's Retained Interests and Sensitivity of This Fair Value to Immediate Adverse Changes	The table below presents the weighted average key economic assumptions used in measuring the fair value of mortgage-backed retained interests and the sensitivity of this fair value to immediate adverse changes of 10% and 20% in those assumptions. As of December $ in millions 2017 2016 Fair value of retained interests $2,071 $1,519 Weighted average life (years) 6.0 7.5 Constant prepayment rate 9.4% 8.1% Impact of 10% adverse change $ (19 ) $ (14 ) Impact of 20% adverse change $ (35 ) $ (28 ) Discount rate 4.2% 5.3% Impact of 10% adverse change $ (35 ) $ (37 ) Impact of 20% adverse change $ (70 ) $ (71 ) In the table above: • Amounts do not reflect the benefit of other financial instruments that are held to mitigate risks inherent in these retained interests. • Changes in fair value based on an adverse variation in assumptions generally cannot be extrapolated because the relationship of the change in assumptions to the change in fair value is not usually linear. • The impact of a change in a particular assumption is calculated independently of changes in any other assumption. In practice, simultaneous changes in assumptions might magnify or counteract the sensitivities disclosed above. • The constant prepayment rate is included only for positions for which it is a key assumption in the determination of fair value. • The discount rate for retained interests that relate to U.S. government agency-issued collateralized mortgage obligations does not include any credit loss. Expected credit loss assumptions are reflected in the discount rate for the remainder of retained interests.

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	12 Months Ended
	Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nonconsolidated Variable Interest Entities	The table below presents a summary of the nonconsolidated VIEs in which the firm holds variable interests. As of December $ in millions 2017 2016 Total nonconsolidated VIEs Assets in VIEs $97,962 $70,083 Carrying value of variable interests — assets 8,425 6,199 Carrying value of variable interests — liabilities 214 254 Maximum exposure to loss: Retained interests 2,115 1,564 Purchased interests 1,172 544 Commitments and guarantees 3,462 2,196 Derivatives 8,406 7,144 Loans and investments 4,454 3,760 Total maximum exposure to loss $19,609 $15,208 The table below disaggregates, by principal business activity, the information for nonconsolidated VIEs included in the summary table above. As of December $ in millions 2017 2016 Mortgage-backed Assets in VIEs $55,153 $32,714 Carrying value of variable interests — assets 3,128 1,936 Maximum exposure to loss: Retained interests 2,059 1,508 Purchased interests 1,067 429 Commitments and guarantees 11 9 Derivatives 99 163 Total maximum exposure to loss $ 3,236 $ 2,109 Real estate, credit- and power-related and other investing Assets in VIEs $15,539 $11,771 Carrying value of variable interests — assets 3,289 2,911 Carrying value of variable interests — liabilities 2 9 Maximum exposure to loss: Commitments and guarantees 1,617 1,658 Loans and investments 3,289 2,911 Total maximum exposure to loss $ 4,906 $ 4,569 Corporate debt and other asset-backed Assets in VIEs $16,251 $11,540 Carrying value of variable interests — assets 1,660 602 Carrying value of variable interests — liabilities 212 245 Maximum exposure to loss: Retained interests 56 56 Purchased interests 105 115 Commitments and guarantees 1,779 461 Derivatives 8,303 6,975 Loans and investments 817 99 Total maximum exposure to loss $11,060 $ 7,706 Investments in funds Assets in VIEs $11,019 $14,058 Carrying value of variable interests — assets 348 750 Maximum exposure to loss: Commitments and guarantees 55 68 Derivatives 4 6 Loans and investments 348 750 Total maximum exposure to loss $ 407 $ 824
Consolidated Variable Interest Entities	The table below presents a summary of the carrying value and classification of assets and liabilities in consolidated VIEs. As of December $ in millions 2017 2016 Total consolidated VIEs Assets Cash and cash equivalents $ 275 $ 300 Receivables from customers and counterparties 2 – Loans receivable 427 603 Financial instruments owned 1,194 2,047 Other assets 1,273 682 Total $3,171 $3,632 Liabilities Other secured financings $1,023 $ 854 Payables to brokers, dealers and clearing organizations – 1 Financial instruments sold, but not yet purchased 15 7 Unsecured short-term borrowings 79 197 Unsecured long-term borrowings 225 334 Other liabilities and accrued expenses 577 803 Total $1,919 $2,196 The table below disaggregates, by principal business activity, the information for consolidated VIEs included in the summary table above. As of December $ in millions 2017 2016 Real estate, credit-related and other investing Assets Cash and cash equivalents $ 275 $ 300 Loans receivable 375 603 Financial instruments owned 896 1,708 Other assets 1,267 680 Total $2,813 $3,291 Liabilities Other secured financings $ 327 $ 284 Payables to brokers, dealers and clearing organizations – 1 Financial instruments sold, but not yet purchased 15 7 Other liabilities and accrued expenses 577 803 Total $ 919 $1,095 Mortgage-backed and other asset-backed Assets Receivables from customers and counterparties $ 2 $ – Loans receivable 52 – Financial instruments owned 242 253 Other assets 6 2 Total $ 302 $ 255 Liabilities Other secured financings $ 207 $ 139 Total $ 207 $ 139 Principal-protected notes Assets Financial instruments owned $ 56 $ 86 Total $ 56 $ 86 Liabilities Other secured financings $ 489 $ 431 Unsecured short-term borrowings 79 197 Unsecured long-term borrowings 225 334 Total $ 793 $ 962

Other Assets (Tables)

Other Assets (Tables)	12 Months Ended
	Dec. 31, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Other Assets	The table below presents other assets by type. As of December $ in millions 2017 2016 Property, leasehold improvements and equipment $15,094 $12,070 Goodwill and identifiable intangible assets 4,038 4,095 Income tax-related 3,728 5,550 Miscellaneous receivables and other 5,486 3,766 Total $28,346 $25,481
Goodwill and Intangible Assets	The table below presents the carrying value of goodwill. As of December $ in millions 2017 2016 Investment Banking: Financial Advisory $ 98 $ 98 Underwriting 183 183 Institutional Client Services: FICC Client Execution 269 269 Equities client execution 2,403 2,403 Securities services 105 105 Investing & Lending 2 2 Investment Management 605 606 Total $3,665 $3,666 The table below presents the carrying value of identifiable intangible assets. As of December $ in millions 2017 2016 Institutional Client Services: FICC Client Execution $ 37 $ 65 Equities client execution 88 141 Investing & Lending 140 105 Investment Management 108 118 Total $ 373 $ 429
Intangible Assets Disclosure	The table below presents further details on the net carrying value of identifiable intangible assets. As of December $ in millions 2017 2016 Customer lists Gross carrying value $ 1,091 $ 1,065 Accumulated amortization (903 ) (837 ) Net carrying value 188 228 Other Gross carrying value 584 543 Accumulated amortization (399 ) (342 ) Net carrying value 185 201 Total gross carrying value 1,675 1,608 Total accumulated amortization (1,302 ) (1,179 ) Total net carrying value $ 373 $ 429 In the table above: • The net carrying value of other intangibles primarily includes intangible assets related to acquired leases and commodities transportation rights. • During 2017 and 2016, the firm acquired $113 million and $89 million, respectively, of intangible assets, primarily related to acquired leases, with a weighted average amortization period of five and three years, respectively.
Amortization Expense	The tables below present details about amortization of identifiable intangible assets. Year Ended December $ in millions 2017 2016 2015 Amortization $150 $162 $132
Estimated Future Amortization	$ in millions As of Estimated future amortization 2018 $133 2019 $ 98 2020 $ 39 2021 $ 27 2022 $ 20

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2017
Banking and Thrift [Abstract]
Schedule of Types and Sources of Deposits	The table below presents the types and sources of the firm’s deposits. $ in millions Savings and Time Total As of December 2017 Private bank deposits $50,579 $ 1,623 $ 52,202 Marcus deposits 13,787 3,330 17,117 Brokered certificates of deposit – 35,704 35,704 Deposit sweep programs 16,019 – 16,019 Institutional deposits 1 17,561 17,562 Total $80,386 $58,218 $138,604 As of December 2016 Private bank deposits $50,655 $ 3,100 $ 53,755 Marcus deposits 10,511 1,337 11,848 Brokered certificates of deposit – 34,905 34,905 Deposit sweep programs 16,019 – 16,019 Institutional deposits 12 7,559 7,571 Total $77,197 $46,901 $124,098
Deposits	The table below presents deposits held in U.S. and non-U.S. As of December $ in millions 2017 2016 U.S. offices $111,002 $106,037 Non-U.S. 27,602 18,061 Total $138,604 $124,098
Maturities of Time Deposits	The table below presents maturities of time deposits held in U.S. and non-U.S. As of December 2017 $ in millions U.S. Non-U.S. Total 2018 $13,106 $15,037 $28,143 2019 7,297 3,179 10,476 2020 5,142 12 5,154 2021 3,574 43 3,617 2022 4,907 86 4,993 2023 - thereafter 5,289 546 5,835 Total $39,315 $18,903 $58,218

Short-Term Borrowings (Tables)

Short-Term Borrowings (Tables)	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Short-Term Borrowings	The table below presents details about the firm’s short-term borrowings. As of December $ in millions 2017 2016 Other secured financings (short-term) $14,896 $13,118 Unsecured short-term borrowings 46,922 39,265 Total $61,818 $52,383
Unsecured Short-Term Borrowings	The table below presents details about the firm’s unsecured short-term borrowings. As of December $ in millions 2017 2016 Current portion of unsecured long-term borrowings $30,090 $23,528 Hybrid financial instruments 12,973 11,700 Other unsecured short-term borrowings 3,859 4,037 Total $46,922 $39,265 Weighted average interest rate 2.28% 1.68%

Long-Term Borrowings (Tables)

Long-Term Borrowings (Tables)	12 Months Ended
	Dec. 31, 2017
Debt Disclosure [Abstract]
Long-Term Borrowings	The table below presents details about the firm’s long-term borrowings. As of December $ in millions 2017 2016 Other secured financings (long-term) $ 9,892 $ 8,405 Unsecured long-term borrowings 217,687 189,086 Total $227,579 $197,491
Unsecured Long-Term Borrowings	The table below presents unsecured long-term borrowings extending through 2057, which consists principally of senior borrowings. $ in millions U.S. Dollar Non-U.S. Total As of December 2017 Fixed-rate obligations: Group Inc. $101,791 $ 35,116 $136,907 Subsidiaries 2,244 1,859 4,103 Floating-rate obligations: Group Inc. 29,637 23,938 53,575 Subsidiaries 14,977 8,125 23,102 Total $148,649 $ 69,038 $217,687 As of December 2016 Fixed-rate obligations: Group Inc. $ 93,885 $ 31,274 $125,159 Subsidiaries 2,228 885 3,113 Floating-rate obligations: Group Inc. 27,864 19,112 46,976 Subsidiaries 8,884 4,954 13,838 Total $132,861 $ 56,225 $189,086
Unsecured Long-Term Borrowings by Maturity Date	The table below presents unsecured long-term borrowings by maturity date. As of December 2017 $ in millions Group Inc. Subsidiaries Total 2019 $ 24,915 $ 5,590 $ 30,505 2020 20,215 2,905 23,120 2021 20,547 1,234 21,781 2022 21,044 1,558 22,602 2023 - thereafter 103,761 15,918 119,679 Total $190,482 $27,205 $217,687
Unsecured Long-Term Borrowings after Hedging	The table below presents unsecured long-term borrowings, after giving effect to such hedging activities. $ in millions Group Inc. Subsidiaries Total As of December 2017 Fixed-rate obligations: At fair value $ – $ 147 $ 147 At amortized cost 86,951 3,852 90,803 Floating-rate obligations: At fair value 18,207 20,284 38,491 At amortized cost 85,324 2,922 88,246 Total $190,482 $27,205 $217,687 As of December 2016 Fixed-rate obligations: At fair value $ – $ 150 $ 150 At amortized cost 71,225 3,493 74,718 Floating-rate obligations: At fair value 17,591 11,669 29,260 At amortized cost 83,319 1,639 84,958 Total $172,135 $16,951 $189,086
Subordinated Long-Term Borrowings	The table below presents details about the firm’s subordinated borrowings. $ in millions Par Carrying Rate As of December 2017 Subordinated debt $14,117 $16,235 3.31% Junior subordinated debt 1,168 1,539 2.37% Total $15,285 $17,774 3.24% As of December 2016 Subordinated debt $15,058 $17,604 4.29% Junior subordinated debt 1,360 1,809 5.70% Total $16,418 $19,413 4.41%

Other Liabilities and Accrued53

Other Liabilities and Accrued Expenses (Tables)	12 Months Ended
	Dec. 31, 2017
Other Liabilities Disclosure [Abstract]
Other Liabilities and Accrued Expenses	The table below presents other liabilities and accrued expenses by type. As of December $ in millions 2017 2016 Compensation and benefits $ 6,710 $ 7,181 Noncontrolling interests 553 506 Income tax-related 4,051 1,794 Employee interests in consolidated funds 156 77 Subordinated liabilities of consolidated VIEs 19 584 Accrued expenses and other 5,433 4,220 Total $16,922 $14,362

Commitments, Contingencies an54

Commitments, Contingencies and Guarantees (Tables)	12 Months Ended
	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments	The table below presents the firm’s commitments by type. As of December $ in millions 2017 2016 Commercial lending: Investment-grade $ 93,115 $ 73,664 Non-investment-grade 45,291 34,878 Warehouse financing 5,340 3,514 Total commitments to extend credit 143,746 112,056 Contingent and forward starting collateralized agreements 41,756 25,348 Forward starting collateralized financings 16,902 8,939 Letters of credit 437 373 Investment commitments 6,840 8,444 Other 6,310 6,014 Total commitments $215,991 $161,174 The table below presents the firm’s commitments by period of expiration. As of December 2017 $ in millions 2018 2019 - 2021 - 2023 - Commercial lending: Investment-grade $14,593 $38,836 $38,431 $ 1,255 Non-investment-grade 2,614 12,297 21,833 8,547 Warehouse financing 1,688 1,730 1,241 681 Total commitments to extend credit 18,895 52,863 61,505 10,483 Contingent and forward starting collateralized agreements 41,756 – – – Forward starting collateralized financings 16,902 – – – Letters of credit 288 109 – 40 Investment commitments 2,836 676 493 2,835 Other 6,089 171 50 – Total commitments $86,766 $53,819 $62,048 $13,358
Leases	The table below presents future minimum rental payments, net of minimum sublease rentals. $ in millions As of 2018 $ 299 2019 282 2020 262 2021 205 2022 145 2023 - thereafter 771 Total $1,964
Guarantees	The table below presents information about certain derivatives that meet the definition of a guarantee, securities lending indemnifications and certain other financial guarantees. $ in millions Derivatives Securities lending Other As of December 2017 Carrying Value of Net Liability $ 5,406 $ – $ 37 Maximum Payout/Notional Amount by Period of Expiration 2018 $1,139,751 $37,959 $ 723 2019 - 2020 205,983 – 1,515 2021 - 2022 71,599 – 1,209 2023 - thereafter 76,540 – 137 Total $1,493,873 $37,959 $3,584 As of December 2016 Carrying Value of Net Liability $ 8,873 $ – $ 50 Maximum Payout/Notional Amount by Period of Expiration 2017 $ 432,328 $33,403 $1,064 2018 - 2019 261,676 – 763 2020 - 2021 71,264 – 1,662 2022 - thereafter 51,506 – 173 Total $ 816,774 $33,403 $3,662 In the table above: • The maximum payout is based on the notional amount of the contract and does not represent anticipated losses. • Amounts exclude certain commitments to issue standby letters of credit that are included in commitments to extend credit. See the tables in “Commitments” above for a summary of the firm’s commitments. • The carrying value for derivatives included derivative assets of $2.20 billion and $1.20 billion and derivative liabilities of $7.61 billion and $10.07 billion as of December 2017 and December 2016, respectively.

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2017
Text Block [Abstract]
Summary of Amount of Common Stock Repurchased by the Firm	The table below presents the amount of common stock repurchased by the firm under the share repurchase program. Year Ended December in millions, except per share amounts 2017 2016 2015 Common share repurchases 29.0 36.6 22.1 Average cost per share $231.87 $165.88 $189.41 Total cost of common share repurchases $ 6,721 $ 6,069 $ 4,195
Summary of Perpetual Preferred Stock Issued and Outstanding	The tables below present details about the perpetual preferred stock issued and outstanding as of December 2017. Series Shares Shares Shares Depositary Shares A 50,000 30,000 29,999 1,000 B 50,000 32,000 32,000 1,000 C 25,000 8,000 8,000 1,000 D 60,000 54,000 53,999 1,000 E 17,500 7,667 7,667 N/A F 5,000 1,615 1,615 N/A J 46,000 40,000 40,000 1,000 K 32,200 28,000 28,000 1,000 L 52,000 52,000 52,000 25 M 80,000 80,000 80,000 25 N 31,050 27,000 27,000 1,000 O 26,000 26,000 26,000 25 P 66,000 60,000 60,000 25 Total 540,750 446,282 446,280 Series Earliest Redemption Date Liquidation Redemption ($ in millions) A Currently redeemable $ 25,000 $ 750 B Currently redeemable $ 25,000 800 C Currently redeemable $ 25,000 200 D Currently redeemable $ 25,000 1,350 E Currently redeemable $100,000 767 F Currently redeemable $100,000 161 J May 10, 2023 $ 25,000 1,000 K May 10, 2024 $ 25,000 700 L May 10, 2019 $ 25,000 1,300 M May 10, 2020 $ 25,000 2,000 N May 10, 2021 $ 25,000 675 O November 10, 2026 $ 25,000 650 P November 10, 2022 $ 25,000 1,500 Total $11,853 In the tables above: • All shares have a par value of $0.01 per share and, where applicable, each share is represented by the specified number of depositary shares. • The earliest redemption date represents the date on which each share of non-cumulative • Prior to redeeming preferred stock, the firm must receive confirmation that the FRB does not object to such capital action. • In November 2017, Group Inc. issued 60,000 shares of Series P perpetual 5.00% Fixed-to-Floating Non-Cumulative • The redemption price per share for Series A through F Preferred Stock is the liquidation preference plus declared and unpaid dividends. The redemption price per share for Series J through P Preferred Stock is the liquidation preference plus accrued and unpaid dividends. Each share of non-cumulative • All series of preferred stock are pari passu and have a preference over the firm’s common stock on liquidation. • The firm’s ability to declare or pay dividends on, or purchase, redeem or otherwise acquire, its common stock is subject to certain restrictions in the event that the firm fails to pay or set aside full dividends on the preferred stock for the latest completed dividend period.
Summary of Dividend Rates of Perpetual Preferred Stock Issued and Outstanding	The table below presents the dividend rates of the firm’s perpetual preferred stock as of December 2017. Series Per Annum Dividend Rate A 3 month LIBOR + 0.75%, with floor of 3.75%, payable quarterly B 6.20%, payable quarterly C 3 month LIBOR + 0.75%, with floor of 4.00%, payable quarterly D 3 month LIBOR + 0.67%, with floor of 4.00%, payable quarterly E 3 month LIBOR + 0.77%, with floor of 4.00%, payable quarterly F 3 month LIBOR + 0.77%, with floor of 4.00%, payable quarterly J 5.50% to, but excluding, May 10, 2023; 3 month LIBOR + 3.64% thereafter, payable quarterly K 6.375% to, but excluding, May 10, 2024; 3 month LIBOR + 3.55% thereafter, payable quarterly L 5.70%, payable semi-annually, from issuance date to, but excluding, May 10, 2019; 3 month LIBOR + 3.884%, payable quarterly, thereafter M 5.375%, payable semi-annually, from issuance date to, but excluding, N 6.30%, payable quarterly O 5.30%, payable semi-annually, from issuance date to, but excluding, November 10, 2026; 3 month LIBOR + 3.834%, payable quarterly, thereafter P 5.00%, payable semi-annually, from issuance date to, but excluding,
Summary of Preferred Dividends Declared on Preferred Stock Issued	The table below presents dividends declared on the firm’s preferred stock. Year Ended December 2017 2016 2015 Series per share $ in millions per share $ in millions per share $ in A $ 950.51 $ 29 $ 953.12 $ 29 $ 950.52 $ 28 B $1,550.00 50 $1,550.00 50 $1,550.00 50 C $1,013.90 8 $1,016.68 8 $1,013.90 8 D $1,013.90 55 $1,016.68 55 $1,013.90 54 E $4,055.55 31 $4,066.66 50 $4,055.55 71 F $4,055.55 6 $4,066.66 13 $4,055.55 20 I $1,487.52 51 $1,487.52 51 $1,487.52 51 J $1,375.00 55 $1,375.00 55 $1,375.00 55 K $1,593.76 45 $1,593.76 45 $1,593.76 45 L $1,425.00 74 $1,425.00 74 $1,425.00 74 M $1,343.76 107 $1,343.76 107 $ 735.33 59 N $1,575.00 42 $1,124.38 30 $ – – O $1,325.00 34 $ 379.10 10 $ – – Total $587 $577 $515
Accumulated Other Comprehensive Income, Net of Tax	The table below presents changes in the accumulated other comprehensive loss, net of tax, by type. $ in millions Beginning Other Ending Year Ended December 2017 Currency translation $ (647 ) $ 22 $ (625 ) Debt valuation adjustment (239 ) (807 ) (1,046 ) Pension and postretirement liabilities (330 ) 130 (200 ) Available-for-sale – (9 ) (9 ) Total $(1,216 ) $(664 ) $(1,880 ) Year Ended December 2016 Currency translation $ (587 ) $ (60 ) $ (647 ) Debt valuation adjustment 305 (544 ) (239 ) Pension and postretirement liabilities (131 ) (199 ) (330 ) Total $ (413 ) $(803 ) $(1,216 )

Regulation and Capital Adequa56

Regulation and Capital Adequacy (Tables)	12 Months Ended
	Dec. 31, 2017
Minimum Capital Ratios	The table below presents the minimum ratios required for the firm. As of December 2017 2016 CET1 ratio 7.000% 5.875% Tier 1 capital ratio 8.500% 7.375% Total capital ratio 10.500% 9.375% Tier 1 leverage ratio 4.000% 4.000%
Capital Rollforward	The tables below present changes in CET1, Tier 1 capital and Tier 2 capital. Year Ended December 2017 $ in millions Standardized Basel III Advanced Common Equity Tier 1 Beginning balance $72,046 $72,046 Change in common shareholders’ equity (5,300 ) (5,300 ) Change in deduction for: Transitional provisions (426 ) (426 ) Goodwill and identifiable intangible assets, net of deferred tax liabilities (324 ) (324 ) Investments in nonconsolidated financial institutions 586 586 Change in other adjustments 528 528 Ending balance $67,110 $67,110 Tier 1 capital Beginning balance $82,440 $82,440 Change in deduction for: Transitional provisions (274 ) (274 ) Investments in covered funds (145 ) (145 ) Other net decrease in CET1 (4,510 ) (4,510 ) Change in preferred stock 650 650 Change in other adjustments 170 170 Ending balance 78,331 78,331 Tier 2 capital Beginning balance 16,074 15,352 Change in qualifying subordinated debt (1,206 ) (1,206 ) Redesignation of junior subordinated debt issued to trusts (225 ) (225 ) Change in the allowance for losses on loans and lending commitments 356 – Change in other adjustments (22 ) (22 ) Ending balance 14,977 13,899 Total capital $93,308 $92,230 Year Ended December 2016 $ in millions Standardized Basel III Advanced Common Equity Tier 1 Beginning balance $71,363 $71,363 Change in common shareholders’ equity 162 162 Change in deduction for: Transitional provisions (839 ) (839 ) Goodwill and identifiable intangible assets, net of deferred tax liabilities 16 16 Investments in nonconsolidated financial institutions 895 895 Change in other adjustments 449 449 Ending balance $72,046 $72,046 Tier 1 capital Beginning balance $81,511 $81,511 Change in deduction for: Transitional provisions (558 ) (558 ) Investments in covered funds (32 ) (32 ) Other net increase in CET1 1,522 1,522 Redesignation of junior subordinated debt issued to trusts (330 ) (330 ) Change in preferred stock 3 3 Change in other adjustments 324 324 Ending balance 82,440 82,440 Tier 2 capital Beginning balance 16,705 16,103 Change in qualifying subordinated debt (566 ) (566 ) Redesignation of junior subordinated debt issued to trusts (198 ) (198 ) Change in the allowance for losses on loans and lending commitments 120 – Change in other adjustments 13 13 Ending balance 16,074 15,352 Total capital $98,514 $97,792
Schedule of Minimum Ratios and Well Capitalized Minimum Ratios	The table below presents the minimum ratios and the “well-capitalized” minimum ratios required for GS Bank USA. Minimum Ratio as of December “Well-capitalized” 2017 2016 CET1 ratio 5.750% 5.125% 6.5% Tier 1 capital ratio 7.250% 6.625% 8.0% Total capital ratio 9.250% 8.625% 10.0% Tier 1 leverage ratio 4.000% 4.000% 5.0%
Basel III Advanced Rules [Member]
Capital Ratios	The table below presents the ratios calculated in accordance with both the Standardized Capital Rules and Basel III Advanced Rules. As of December $ in millions 2017 2016 Common shareholders’ equity $ 70,390 $ 75,690 Deduction for goodwill and identifiable intangible assets, net of deferred tax liabilities (3,269 ) (2,874 ) Deduction for investments in nonconsolidated financial institutions – (424 ) Other adjustments (11 ) (346 ) Common Equity Tier 1 67,110 72,046 Preferred stock 11,853 11,203 Deduction for investments in covered funds (590 ) (445 ) Other adjustments (42 ) (364 ) Tier 1 capital $ 78,331 $ 82,440 Standardized Tier 2 and Total capital Tier 1 capital $ 78,331 $ 82,440 Qualifying subordinated debt 13,360 14,566 Junior subordinated debt issued to trusts 567 792 Allowance for losses on loans and lending commitments 1,078 722 Other adjustments (28 ) (6 ) Standardized Tier 2 capital 14,977 16,074 Standardized Total capital $ 93,308 $ 98,514 Basel III Advanced Tier 2 and Total capital Tier 1 capital $ 78,331 $ 82,440 Standardized Tier 2 capital 14,977 16,074 Allowance for losses on loans and lending commitments (1,078 ) (722 ) Basel III Advanced Tier 2 capital 13,899 15,352 Basel III Advanced Total capital $ 92,230 $ 97,792 RWAs Standardized $555,611 $496,676 Basel III Advanced $617,646 $549,650 CET1 ratio Standardized 12.1% 14.5% Basel III Advanced 10.9% 13.1% Tier 1 capital ratio Standardized 14.1% 16.6% Basel III Advanced 12.7% 15.0% Total capital ratio Standardized 16.8% 19.8% Basel III Advanced 14.9% 17.8% Tier 1 leverage ratio 8.4% 9.4% Effective January 2018, the firm was subject to the fully phased-in phased-in In the table above: • Deduction for goodwill and identifiable intangible assets, net of deferred tax liabilities, included goodwill of $3.67 billion as of both December 2017 and December 2016, and identifiable intangible assets of $298 million (80% of $373 million) and $257 million (60% of $429 million) as of December 2017 and December 2016, respectively, net of associated deferred tax liabilities of $694 million and $1.05 billion as of December 2017 and December 2016, respectively. Goodwill is fully deducted from CET1, while the deduction for identifiable intangible assets is required to be phased into CET1 ratably over five years from 2014 to 2018. The balance that is not deducted during the transitional period is risk weighted. • Deduction for investments in nonconsolidated financial institutions represents the amount by which the firm’s investments in the capital of nonconsolidated financial institutions exceed certain prescribed thresholds. The deduction for such investments is required to be phased into CET1 ratably over five years from 2014 to 2018. As of December 2017 and December 2016, CET1 reflects 80% and 60% of the deduction, respectively. The balance that is not deducted during the transitional period is risk weighted. • Deduction for investments in covered funds represents the firm’s aggregate investments in applicable covered funds, excluding investments that are subject to an extended conformance period. This deduction was not subject to a transition period. See Note 6 for further information about the Volcker Rule. • Other adjustments within CET1 and Tier 1 capital primarily include credit valuation adjustments on derivative liabilities, pension and postretirement liabilities, the overfunded portion of the firm’s defined benefit pension plan obligation net of associated deferred tax liabilities, disallowed deferred tax assets, debt valuation adjustments and other required credit risk-based deductions. The deduction for such items is generally required to be phased into CET1 ratably over five years from 2014 to 2018. As of December 2017 and December 2016, CET1 reflects 80% and 60% of such deduction, respectively. The balance that is not deducted from CET1 during the transitional period is generally deducted from Tier 1 capital within other adjustments. • As of December 2017, junior subordinated debt issued to trusts was fully phased out of Tier 1 capital, with 50% included in Tier 2 capital and 50% fully phased out of regulatory capital. As of December 2016, junior subordinated debt issued to trusts was fully phased out of Tier 1 capital, with 60% included in Tier 2 capital and 40% fully phased out of regulatory capital. Junior subordinated debt issued to trusts is reduced by the amount of trust preferred securities purchased by the firm and will be fully phased out of Tier 2 capital by 2022 at a rate of 10% per year. See Note 16 for further information about the firm’s junior subordinated debt issued to trusts and trust preferred securities purchased by the firm. • Qualifying subordinated debt is subordinated debt issued by Group Inc. with an original maturity of five years or greater. The outstanding amount of subordinated debt qualifying for Tier 2 capital is reduced upon reaching a remaining maturity of five years. See Note 16 for further information about the firm’s subordinated debt.
Risk-weighted Assets	The tables below present the components of RWAs calculated in accordance with the Standardized Capital Rules and Basel III Advanced Rules. Standardized Capital Rules $ in millions 2017 2016 Credit RWAs Derivatives $126,076 $124,286 Commitments, guarantees and loans 145,104 115,744 Securities financing transactions 77,962 71,319 Equity investments 48,155 41,428 Other 70,933 58,636 Total Credit RWAs 468,230 411,413 Market RWAs Regulatory VaR 7,532 9,750 Stressed VaR 32,753 22,475 Incremental risk 8,441 7,875 Comprehensive risk 2,397 5,338 Specific risk 36,258 39,825 Total Market RWAs 87,381 85,263 Total RWAs $555,611 $496,676 Basel III Advanced Rules $ in millions 2017 2016 Credit RWAs Derivatives $102,986 $105,096 Commitments, guarantees and loans 163,375 122,792 Securities financing transactions 19,362 14,673 Equity investments 51,626 44,095 Other 75,968 63,431 Total Credit RWAs 413,317 350,087 Market RWAs Regulatory VaR 7,532 9,750 Stressed VaR 32,753 22,475 Incremental risk 8,441 7,875 Comprehensive risk 1,870 4,550 Specific risk 36,258 39,825 Total Market RWAs 86,854 84,475 Total Operational RWAs 117,475 115,088 Total RWAs $617,646 $549,650
Risk-weighted Assets Rollforward	The table below presents changes in RWAs calculated in accordance with the Standardized Capital Rules and Basel III Advanced Rules. Year Ended December 2017 $ in millions Standardized Basel III Risk-Weighted Assets Beginning balance $496,676 $549,650 Credit RWAs Change in: Deduction for transitional provisions (233 ) (233 ) Derivatives 1,790 (2,110 ) Commitments, guarantees and loans 29,360 40,583 Securities financing transactions 6,643 4,689 Equity investments 6,889 7,693 Other 12,368 12,608 Change in Credit RWAs 56,817 63,230 Market RWAs Change in: Regulatory VaR (2,218 ) (2,218 ) Stressed VaR 10,278 10,278 Incremental risk 566 566 Comprehensive risk (2,941 ) (2,680 ) Specific risk (3,567 ) (3,567 ) Change in Market RWAs 2,118 2,379 Operational RWAs Change in operational risk – 2,387 Change in Operational RWAs – 2,387 Ending balance $555,611 $617,646 The table below presents changes in RWAs calculated in accordance with the Standardized Capital Rules and Basel III Advanced Rules. Year Ended December 2016 $ in millions Standardized Basel III Risk-Weighted Assets Beginning balance $524,107 $577,651 Credit RWAs Change in: Deduction for transitional provisions (531 ) (531 ) Derivatives (12,555 ) (8,575 ) Commitments, guarantees and loans 4,353 8,269 Securities financing transactions (73 ) (228 ) Equity investments 4,196 4,440 Other (4,095 ) 2,630 Change in Credit RWAs (8,705 ) 6,005 Market RWAs Change in: Regulatory VaR (2,250 ) (2,250 ) Stressed VaR 737 737 Incremental risk (1,638 ) (1,638 ) Comprehensive risk (387 ) (167 ) Specific risk (15,188 ) (15,188 ) Change in Market RWAs (18,726 ) (18,506 ) Operational RWAs Change in operational risk – (15,500 ) Change in Operational RWAs – (15,500 ) Ending balance $496,676 $549,650
Hybrid Capital Rules [Member]
Capital Ratios	The table below presents the ratios for GS Bank USA calculated in accordance with both the Standardized Capital Rules and Basel III Advanced Rules. As of December $ in millions 2017 2016 Standardized Common Equity Tier 1 $ 25,343 $ 24,485 Tier 1 capital 25,343 24,485 Tier 2 capital 2,547 2,382 Total capital $ 27,890 $ 26,867 Basel III Advanced Common Equity Tier 1 $ 25,343 $ 24,485 Tier 1 capital 25,343 24,485 Standardized Tier 2 capital 2,547 2,382 Allowance for losses on loans and (547 ) (382 ) Tier 2 capital 2,000 2,000 Total capital $ 27,343 $ 26,485 RWAs Standardized $229,775 $204,232 Basel III Advanced $164,602 $131,051 CET1 ratio Standardized 11.0% 12.0% Basel III Advanced 15.4% 18.7% Tier 1 capital ratio Standardized 11.0% 12.0% Basel III Advanced 15.4% 18.7% Total capital ratio Standardized 12.1% 13.2% Basel III Advanced 16.6% 20.2% Tier 1 leverage ratio 15.0% 14.4%

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	12 Months Ended
	Dec. 31, 2017
Earnings Per Share [Abstract]
Earnings Per Common Share	The table below presents the computations of basic and diluted EPS. Year Ended December in millions, except per share amounts 2017 2016 2015 Net earnings applicable to common shareholders $3,685 $7,087 $5,568 Weighted average basic shares 401.6 427.4 448.9 Effect of dilutive securities: RSUs 5.3 4.7 5.3 Stock options 2.2 3.0 4.4 Dilutive securities 7.5 7.7 9.7 Weighted average basic shares and dilutive securities 409.1 435.1 458.6 Basic EPS $ 9.12 $16.53 $12.35 Diluted EPS $ 9.01 $16.29 $12.14

Transactions with Affiliated 58

Transactions with Affiliated Funds (Tables)	12 Months Ended
	Dec. 31, 2017
Text Block [Abstract]
Fees Earned from Affiliated Funds	The tables below present fees earned from affiliated funds. Year Ended December $ in millions 2017 2016 2015 Fees earned from funds $2,932 $2,777 $3,293
Fees Receivable from Affiliated Funds and the Aggregate Carrying Value of the Firm's Interests in these Funds	The tables below present fees receivable from affiliated funds and the aggregate carrying value of the firm’s interests in affiliated funds. As of December $ in millions 2017 2016 Fees receivable from funds $ 637 $ 554 Aggregate carrying value of interests in funds $4,993 $6,841

Interest Income and Interest 59

Interest Income and Interest Expense (Tables)	12 Months Ended
	Dec. 31, 2017
Banking and Thrift, Interest [Abstract]
Interest Income and Interest Expense	Interest is recorded over the life of the instrument on an accrual basis based on contractual interest rates. The table below presents the firm’s sources of interest income and interest expense. Year Ended December $ in millions 2017 2016 2015 Interest income Deposits with banks $ 819 $ 452 $ 241 Collateralized agreements 1,661 691 17 Financial instruments owned 5,904 5,444 5,862 Loans receivable 2,678 1,843 1,191 Other interest 2,051 1,261 1,141 Total interest income 13,113 9,691 8,452 Interest expense Deposits 1,380 878 408 Collateralized financings 863 442 330 Financial instruments sold, but 1,388 1,251 1,319 Short-term secured and 698 446 429 Long-term secured and 4,599 4,242 3,878 Other interest 1,253 (155 ) (976 ) Total interest expense 10,181 7,104 5,388 Net interest income $ 2,932 $2,587 $3,064

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Provision for Taxes	The table below presents the components of the provision for taxes. Year Ended December $ in millions 2017 2016 2015 Current taxes U.S. federal $ 320 $1,032 $1,116 State and local 64 139 (12 ) Non-U.S. 1,004 1,184 1,166 Total current tax expense 1,388 2,355 2,270 Deferred taxes U.S. federal 5,083 399 397 State and local 157 51 62 Non-U.S. 218 101 (34 ) Total deferred tax expense 5,458 551 425 Provision for taxes $6,846 $2,906 $2,695 In the table above: • State and local current taxes includes the impact of settlements of state and local examinations. • U.S. federal deferred tax expense includes the estimated impact of Tax Legislation.
Effective Income Tax Rate Reconciliation	The table below presents a reconciliation of the U.S. federal statutory income tax rate to the firm’s effective income tax rate. Year Ended December 2017 2016 2015 U.S. federal statutory income tax rate 35.0% 35.0% 35.0% State and local taxes, net of U.S. federal income tax effects 1.5% 0.9% 0.3% ASU No. 2016-09 tax benefits on settlement share-based (6.4)% – – Non-U.S. (6.3)% (6.7)% (12.1)% Tax credits (2.1)% (2.0)% (1.7)% Tax-exempt (0.2)% (0.3)% (0.7)% Tax Legislation — repatriation tax 29.8% – – Tax Legislation — remeasurement of deferred tax assets 9.7% – – Non-deductible 0.5% 1.0% 10.2% Other – 0.3% (0.3)% Effective income tax rate 61.5% 28.2% 30.7% In the table above: • Non-U.S. • State and local taxes, net of U.S. federal income tax effects includes the impact of settlements of state and local examinations. • Substantially all of the non-deductible
Components of Deferred Tax Assets and Liabilities	The table below presents the significant components of deferred tax assets and liabilities, excluding the impact of netting within tax jurisdictions. As of December $ in millions 2017 2016 Deferred tax assets Compensation and benefits $1,233 $2,461 ASC 740 asset related to unrecognized tax benefits 75 231 Non-U.S. – 967 Net operating losses 428 427 Occupancy-related 67 100 Other comprehensive income-related 408 757 Tax credits carryforward 1,006 – Other, net 113 394 Subtotal 3,330 5,337 Valuation allowance (156 ) (115 ) Total deferred tax assets $3,174 $5,222 Deferred tax liabilities Depreciation and amortization $ 826 $1,200 Tax Legislation — repatriation tax 3,114 – Non-U.S. 180 – Unrealized gains 742 342 Total deferred tax liabilities $4,862 $1,542
Rollforward of Unrecognized Tax Benefits	The table below presents the changes in the liability for unrecognized tax benefits. This liability is included in other liabilities and accrued expenses. See Note 17 for further information. Year Ended or as of December $ in millions 2017 2016 2015 Beginning balance $ 852 $ 825 $ 871 Increases based on tax positions related to the current year 94 113 65 Increases based on tax positions related to prior years 101 188 158 Decreases based on tax positions related to prior years (128 ) (88 ) (205 ) Decreases related to settlements (255 ) (186 ) (87 ) Exchange rate fluctuations 1 – 23 Ending balance $ 665 $ 852 $ 825 Related deferred income tax asset 75 231 197 Net unrecognized tax benefit $ 590 $ 621 $ 628
Earliest Tax Years Subject to Examination by Major Jurisdiction	The table below presents the earliest tax years that remain subject to examination by major jurisdiction. Jurisdiction As of December 2017 U.S. Federal 2011 New York State and City 2011 United Kingdom 2014 Japan 2014 Hong Kong 2011

Business Segments (Tables)

Business Segments (Tables)	12 Months Ended
	Dec. 31, 2017
Segment Reporting [Abstract]
Segment Operating Results	Year Ended or as of December $ in millions 2017 2016 2015 Investment Banking Financial Advisory $ 3,188 $ 2,932 $ 3,470 Equity underwriting 1,243 891 1,546 Debt underwriting 2,940 2,450 2,011 Total Underwriting 4,183 3,341 3,557 Total net revenues 7,371 6,273 7,027 Operating expenses 3,526 3,437 3,713 Pre-tax $ 3,845 $ 2,836 $ 3,314 Segment assets $ 2,202 $ 1,824 $ 2,564 Institutional Client Services FICC Client Execution $ 5,299 $ 7,556 $ 7,322 Equities client execution 2,046 2,194 3,028 Commissions and fees 2,920 3,078 3,156 Securities services 1,637 1,639 1,645 Total Equities 6,603 6,911 7,829 Total net revenues 11,902 14,467 15,151 Operating expenses 9,692 9,713 13,938 Pre-tax $ 2,210 $ 4,754 $ 1,213 Segment assets $675,255 $645,689 $663,394 Investing & Lending Equity securities $ 4,578 $ 2,573 $ 3,781 Debt securities and loans 2,003 1,507 1,655 Total net revenues 6,581 4,080 5,436 Operating expenses 2,796 2,386 2,402 Pre-tax $ 3,785 $ 1,694 $ 3,034 Segment assets $226,016 $198,181 $179,428 Investment Management Management and other fees $ 5,144 $ 4,798 $ 4,887 Incentive fees 417 421 780 Transaction revenues 658 569 539 Total net revenues 6,219 5,788 6,206 Operating expenses 4,800 4,654 4,841 Pre-tax $ 1,419 $ 1,134 $ 1,365 Segment assets $ 13,303 $ 14,471 $ 16,009 Total net revenues $ 32,073 $ 30,608 $ 33,820 Total operating expenses 20,941 20,304 25,042 Total pre-tax $ 11,132 $ 10,304 $ 8,778 Total assets $916,776 $860,165 $861,395
Net Interest Income	The table below presents the amounts of net interest income by segment included in net revenues. Year Ended December $ in millions 2017 2016 2015 Investment Banking $ – $ – $ – Institutional Client Services 1,322 1,456 2,472 Investing & Lending 1,325 880 418 Investment Management 285 251 174 Total net interest income $2,932 $2,587 $3,064
Depreciation and Amortization	The table below presents the amounts of depreciation and amortization expense by segment included in pre-tax Year Ended December $ in millions 2017 2016 2015 Investment Banking $ 124 $ 126 $ 123 Institutional Client Services 514 489 462 Investing & Lending 314 215 253 Investment Management 200 168 153 Total depreciation and amortization $1,152 $ 998 $ 991
Net Revenues and Pre-Tax Earnings for Each Geographic Region	The table below presents the total net revenues, pre-tax pre-tax Year Ended December $ in millions 2017 2016 2015 Net revenues Americas $19,405 61% $18,144 60% $19,202 56% EMEA 7,852 24% 8,040 26% 8,981 27% Asia 4,816 15% 4,424 14% 5,637 17% Total net revenues $32,073 100% $30,608 100% $33,820 100% Pre-tax Americas $ 7,119 63% $ 6,352 61% $ 3,359 37% EMEA 2,583 23% 2,883 28% 3,364 38% Asia 1,557 14% 1,183 11% 2,203 25% Subtotal 11,259 100% 10,418 100% 8,926 100% Corporate (127 ) (114 ) (148 ) Total pre-tax earnings $11,132 $10,304 $ 8,778 Net earnings Americas $ 997 23% $ 4,337 58% $ 1,587 26% EMEA 2,144 49% 2,270 30% 2,914 47% Asia 1,241 28% 870 12% 1,686 27% Subtotal 4,382 100% 7,477 100% 6,187 100% Corporate (96 ) (79 ) (104 ) Total net earnings $ 4,286 $ 7,398 $ 6,083

Credit Concentrations (Tables)

Credit Concentrations (Tables)	12 Months Ended
	Dec. 31, 2017
Risks and Uncertainties [Abstract]
Credit Concentration, Government and Federal Agency Obligations	The table below presents the credit concentrations in cash instruments held by the firm and included in financial instruments owned. As of December $ in millions 2017 2016 U.S. government and agency obligations $76,418 $57,657 % of total assets 8.3% 6.7% Non-U.S. $33,956 $29,381 % of total assets 3.7% 3.4%
Credit Concentration, Resale Agreements and Securities Borrowed	The table below presents U.S. government and agency obligations and non-U.S. As of December $ in millions 2017 2016 U.S. government and agency obligations $96,905 $89,721 Non-U.S. $92,850 $80,234 In the table above: • Non-U.S. • Given that the firm’s primary credit exposure on such transactions is to the counterparty to the transaction, the firm would be exposed to the collateral issuer only in the event of counterparty default.

Employee Incentive Plans (Table

Employee Incentive Plans (Tables)	12 Months Ended
	Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Restricted Stock Units, Vested and Expected to Vest	The table below presents the activity related to RSUs. Restricted Stock Units Outstanding Weighted Average Grant-Date Fair Value of Units Outstanding Future No Future Future No Future Outstanding, December 2016 5,623,239 22,202,431 $147.25 $145.97 Granted 3,764,395 5,235,283 $208.24 $205.91 Forfeited (466,715 ) (260,762 ) $167.02 $164.06 Delivered – (17,811,461 ) $ – $151.72 Vested (4,797,337 ) 4,797,337 $162.88 $162.88 Outstanding, December 2017 4,123,582 14,162,828 $182.50 $166.30 In the table above: • The weighted average grant-date fair value of RSUs granted during 2017, 2016 and 2015 was $206.88, $135.92 and $160.19, respectively. The fair value of the RSUs granted during 2017, 2016 and 2015 includes a liquidity discount of 10.7%, 10.5% and 9.2%, respectively, to reflect post-vesting and delivery transfer restrictions, generally of up to 4 years. • The aggregate fair value of awards that vested during 2017, 2016 and 2015 was $2.14 billion, $2.26 billion and $2.40 billion, respectively. • Delivered RSUs include RSUs that were cash settled. • RSUs outstanding include restricted stock subject to future service requirements as of December 2017 and December 2016 of 3,298 and 39,957 shares, respectively. • RSUs outstanding include 62,023 RSUs subject to performance conditions and not subject to future service requirements as of December 2017. There were no such RSUs outstanding as of December 2016.
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	The table below presents the share-based compensation and the related excess tax benefit. Year Ended December $ in millions 2017 2016 2015 Share-based compensation $1,812 $2,170 $2,304 Excess net tax benefit for options exercised $ 139 $ 79 $ 134 Excess net tax benefit for share-based awards $ 719 $ 147 $ 406

Parent Company (Tables)

Parent Company (Tables) - Group Inc. [Member]	12 Months Ended
	Dec. 31, 2017
Group Condensed Statement of Earnings	Group Inc. — Condensed Statements of Earnings Year Ended December $ in millions 2017 2016 2015 Revenues Dividends from subsidiaries and other affiliates: Bank $ 550 $ 53 $ 32 Nonbank 11,016 5,465 3,181 Other revenues (384 ) 155 (132 ) Total non-interest 11,182 5,673 3,081 Interest income 4,638 4,140 3,519 Interest expense 5,978 4,543 4,165 Net interest loss (1,340 ) (403 ) (646 ) Net revenues, including net interest loss 9,842 5,270 2,435 Operating expenses Compensation and benefits 330 343 498 Other expenses 428 332 188 Total operating expenses 758 675 686 Pre-tax 9,084 4,595 1,749 Provision/(benefit) for taxes 3,404 (518 ) (828 ) Undistributed earnings/(loss) of subsidiaries and other affiliates (1,394 ) 2,285 3,506 Net earnings 4,286 7,398 6,083 Preferred stock dividends 601 311 515 Net earnings applicable to common shareholders $ 3,685 $7,087 $5,568
Group Condensed Statement of Financial Condition	Group Inc. — Condensed Statements of Financial Condition As of December $ in millions 2017 2016 Assets Cash and cash equivalents: With third-party banks $ 38 $ 81 With subsidiary bank – 3,000 Loans to and receivables from subsidiaries: Bank 721 9,131 Nonbank 236,050 179,899 Investments in subsidiaries and other affiliates: Bank 26,599 25,571 Nonbank 67,279 67,203 Financial instruments owned (at fair value) 10,248 4,524 Other assets 5,898 6,273 Total assets $346,833 $295,682 Liabilities and shareholders’ equity Payables to subsidiaries $ 1,005 $ 875 Financial instruments sold, but not yet purchased (at fair value) 254 775 Unsecured short-term borrowings: With third parties (includes $2,484 31,871 27,159 With subsidiaries 25,699 999 Unsecured long-term borrowings: With third parties (includes $18,207 190,502 172,164 With subsidiaries 11,068 5,233 Other liabilities and accrued expenses 4,191 1,584 Total liabilities 264,590 208,789 Commitments, contingencies and guarantees Shareholders’ equity Preferred stock 11,853 11,203 Common stock 9 9 Share-based awards 2,777 3,914 Additional paid-in 53,357 52,638 Retained earnings 91,519 89,039 Accumulated other comprehensive loss (1,880 ) (1,216 ) Stock held in treasury, at cost (75,392 ) (68,694 ) Total shareholders’ equity 82,243 86,893 Total liabilities and shareholders’ equity $346,833 $295,682
Condensed Consolidated Statements of Cash Flows	Group Inc. — Condensed Statements of Cash Flows Year Ended December $ in millions 2017 2016 2015 Cash flows from operating activities Net earnings $ 4,286 $ 7,398 $ 6,083 Adjustments to reconcile net earnings to net cash provided by operating activities: Undistributed (earnings)/loss of subsidiaries and other affiliates 1,394 (2,285 ) (3,506 ) Depreciation and amortization 56 52 50 Deferred income taxes 4,358 134 86 Share-based compensation 152 193 178 Loss/(gain) related to extinguishment of subordinated borrowings (114 ) 3 (34 ) Changes in operating assets and liabilities: Financial instruments owned (excluding available-for-sale (309 ) (1,580 ) (620 ) Financial instruments sold, but not yet purchased (521 ) 332 274 Other, net (757 ) 337 1,555 Net cash provided by operating activities 8,545 4,584 4,066 Cash flows from investing activities Purchase of property, leasehold improvements and equipment (66 ) (79 ) (33 ) Issuances of short-term loans to subsidiaries, net (14,415 ) (3,994 ) (24,417 ) Issuance of term loans to subsidiaries (42,234 ) (28,498 ) (8,632 ) Repayments of term loans by subsidiaries 22,039 32,265 24,196 Purchase of investments (6,491 ) – – Capital distributions from/(contributions to) subsidiaries, net 388 (3,265 ) (1,500 ) Net cash used for investing activities (40,779 ) (3,571 ) (10,386 ) Cash flows from financing activities Unsecured short-term borrowings, net: With third parties (424 ) (178 ) (1,570 ) With subsidiaries 23,078 2,290 (1,114 ) Proceeds from issuance of long-term borrowings 43,917 40,708 42,795 Repayment of long-term borrowings, including the current portion (27,028 ) (33,314 ) (27,726 ) Purchase of APEX, senior guaranteed securities and trust preferred securities (237 ) (1,171 ) (1 ) Preferred stock redemption (850 ) – – Common stock repurchased (6,772 ) (6,078 ) (4,135 ) Settlement of share-based awards in satisfaction of withholding tax requirements (2,223 ) (1,128 ) (1,204 ) Dividends and dividend equivalents paid on common stock, preferred stock and share-based (1,769 ) (1,706 ) (1,681 ) Proceeds from issuance of preferred stock, net of issuance costs 1,495 1,303 1,993 Proceeds from issuance of common stock, including exercise of share-based awards 7 6 259 Cash settlement of share-based awards (3 ) – (2 ) Net cash provided by financing activities 29,191 732 7,614 Net increase/(decrease) in cash and cash equivalents (3,043 ) 1,745 1,294 Cash and cash equivalents, beginning balance 3,081 1,336 42 Cash and cash equivalents, ending balance $ 38 $ 3,081 $ 1,336

Description of Business - Addit

Description of Business - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017Segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of business segments	4

Significant Accounting Polici66

Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Jan. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Jan. 01, 2018
Summary of Accounting and Financial Policies [Line Items]
Cash and due from banks		$ 10,790	$ 11,150
Interest-bearing deposits with banks		99,260	110,560
Cash segregated for regulatory and other purposes		18,440	14,650
Loans held for sale		4,630	2,600
Impact of adoption of accounting standard ASU No. 2016-18			(3,690)	$ 909
Accounting Standards Update 2015-02 [Member]
Summary of Accounting and Financial Policies [Line Items]
Impact of adoption of accounting standard ASU No. 2015-02	$ (200)
Accounting Standards Update 2016-09 [Member]
Summary of Accounting and Financial Policies [Line Items]
Reduction to the provision for taxes from the impact of the RSU deliveries and option exercises in 1Q 2017		719
New accounting standards impact on share based award		35
New accounting standards impact on retained earnings		(24)
New accounting standards impact on deferred income taxes		$ 11
New accounting standard adoption impact on cash flows from financing activities			1,130	1,200
Impact of adoption of accounting standard ASU No. 2016-18			202	$ 407
Accounting Standards Update 2014-09 [Member] | Subsequent Event [Member]
Summary of Accounting and Financial Policies [Line Items]
Decrease in retained earnings					$ (53)
Accumulated Other Comprehensive Loss [Member] | Accounting Standards Update 2016-01 [Member]
Summary of Accounting and Financial Policies [Line Items]
Reclassification of cumulative debt valuation adjustment, net of tax, from retained earnings to accumulated other comprehensive loss	$ 305		$ 305

Financial Instruments Owned a67

Financial Instruments Owned and Financial Instruments Sold, But Not Yet Purchased - Financial Instruments Owned and Financial Instruments Sold, But Not Yet Purchased (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial instruments owned	$ 315,988	$ 295,952
Financial instruments sold, but not yet purchased	111,930	117,143
Cash Instruments Assets [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial instruments owned	264,055	235,815
Investments in funds at NAV	4,596	6,465
Subtotal	268,651	242,280
Cash Instruments Assets [Member] | Money Market Instruments [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial instruments owned	1,608	1,319
Cash Instruments Assets [Member] | U.S. Government and Agency Obligations [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial instruments owned	76,418	57,657
Cash Instruments Assets [Member] | Non-U.S. Government and Agency Obligations [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial instruments owned	33,956	29,381
Cash Instruments Assets [Member] | Loans and Securities Backed by Commercial Real Estate [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial instruments owned	3,436	3,842
Cash Instruments Assets [Member] | Loans and Securities Backed by Residential Real Estate [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial instruments owned	11,993	12,195
Cash Instruments Assets [Member] | Corporate Loans And Debt Securities [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial instruments owned	33,683	28,659
Cash Instruments Assets [Member] | State and Municipal Obligations [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial instruments owned	1,471	1,059
Cash Instruments Assets [Member] | Other Debt Obligations [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial instruments owned	2,164	1,358
Cash Instruments Assets [Member] | Equity Securities [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial instruments owned	96,132	94,692
Cash Instruments Assets [Member] | Commodities [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial instruments owned	3,194	5,653
Cash Instruments Liabilities [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial instruments sold, but not yet purchased	72,299	69,644
Cash Instruments Liabilities [Member] | U.S. Government and Agency Obligations [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial instruments sold, but not yet purchased	17,911	16,627
Cash Instruments Liabilities [Member] | Non-U.S. Government and Agency Obligations [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial instruments sold, but not yet purchased	23,311	20,502
Cash Instruments Liabilities [Member] | Loans and Securities Backed by Commercial Real Estate [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial instruments sold, but not yet purchased	1
Cash Instruments Liabilities [Member] | Loans and Securities Backed by Residential Real Estate [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial instruments sold, but not yet purchased		3
Cash Instruments Liabilities [Member] | Corporate Loans And Debt Securities [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial instruments sold, but not yet purchased	7,153	6,570
Cash Instruments Liabilities [Member] | Other Debt Obligations [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial instruments sold, but not yet purchased	1	1
Cash Instruments Liabilities [Member] | Equity Securities [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial instruments sold, but not yet purchased	23,882	25,941
Cash Instruments Liabilities [Member] | Commodities [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial instruments sold, but not yet purchased	40
Derivatives [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Financial instruments owned	47,337	53,672
Financial instruments sold, but not yet purchased	$ 39,631	$ 47,499

Financial Instruments Owned a68

Financial Instruments Owned and Financial Instruments Sold, But Not Yet Purchased - Financial Instruments Owned and Financial Instruments Sold, But Not Yet Purchased (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Cash Instruments Liabilities [Member] | Equity Securities [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Equity method investment	$ 8,490	$ 7,920

Financial Instruments Owned a69

Financial Instruments Owned and Financial Instruments Sold, But Not Yet Purchased - Gains and Losses from Market Making and Other Principal Transactions (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Financial Instruments Owned and Pledged as Collateral [Line Items]
Market making	$ 7,660	$ 9,933	$ 9,523
Other principal transactions	5,256	3,200	5,018
Trading Activity, Gains and Losses, Net	12,916	13,133	14,541
Interest Rates [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Market making	6,406	(1,979)	(1,360)
Credit [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Market making	701	1,854	920
Foreign Exchange [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Market making	(3,249)	6,158	3,345
Equities [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Market making	3,162	2,873	5,515
Commodities [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Market making	$ 640	$ 1,027	$ 1,103

Fair Value Measurements - Finan

Fair Value Measurements - Financial Assets Liabilities Summary (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total financial assets at fair value	$ 518,123	$ 497,693
Total assets	$ 916,776	$ 860,165	$ 861,395
Total level 3 financial assets divided by total assets	2.10%	2.70%
Total level 3 financial assets divided by total financial assets at fair value	3.70%	4.70%
Total financial liabilities at fair value	$ 305,062	$ 271,284
Total level 3 financial liabilities divided by total financial liabilities at fair value	6.40%	7.90%
Counterparty and Cash Collateral Netting [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total financial assets at fair value	$ (56,366)	$ (87,038)
Total financial liabilities at fair value	(39,866)	(44,695)
Investments in funds at NAV [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total financial assets at fair value	4,596	6,465
Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total financial assets at fair value	155,086	135,401
Total financial liabilities at fair value	63,589	62,504
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total financial assets at fair value	395,606	419,585
Total financial liabilities at fair value	261,719	232,027
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total financial assets at fair value	19,201	23,280
Total financial liabilities at fair value	$ 19,620	$ 21,448

Fair Value Measurements - Total

Fair Value Measurements - Total Level 3 Financial Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total financial assets at fair value	$ 518,123	$ 497,693
Derivatives [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total financial assets at fair value	103,703	140,710
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total financial assets at fair value	19,201	23,280
Level 3 [Member] | Cash Instruments Assets [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total financial assets at fair value	15,395	18,035
Level 3 [Member] | Derivatives [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total financial assets at fair value	3,802	5,190
Level 3 [Member] | Other Assets at Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total financial assets at fair value	$ 4	$ 55

Cash Instruments - Cash Instrum

Cash Instruments - Cash Instruments by Level (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	$ 315,988	$ 295,952
Financial instruments sold, but not yet purchased	(111,930)	(117,143)
Cash Instruments Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	264,055	235,815
Investments in funds measured at NAV	4,596	6,465
Total cash instrument assets	268,651	242,280
Cash Instruments Assets [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	155,060	135,366
Cash Instruments Assets [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	93,600	82,414
Cash Instruments Assets [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	15,395	18,035
Cash Instruments Assets [Member] | Money Market Instruments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	1,608	1,319
Cash Instruments Assets [Member] | Money Market Instruments [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	398	188
Cash Instruments Assets [Member] | Money Market Instruments [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	1,209	1,131
Cash Instruments Assets [Member] | Money Market Instruments [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	1
Cash Instruments Assets [Member] | U.S. Government and Agency Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	76,418	57,657
Cash Instruments Assets [Member] | U.S. Government and Agency Obligations [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	50,796	35,254
Cash Instruments Assets [Member] | U.S. Government and Agency Obligations [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	25,622	22,403
Cash Instruments Assets [Member] | Non-U.S. Government and Agency Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	33,956	29,381
Cash Instruments Assets [Member] | Non-U.S. Government and Agency Obligations [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	27,070	22,433
Cash Instruments Assets [Member] | Non-U.S. Government and Agency Obligations [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	6,882	6,933
Cash Instruments Assets [Member] | Non-U.S. Government and Agency Obligations [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	4	15
Cash Instruments Assets [Member] | Loans and Securities Backed by Commercial Real Estate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	3,436	3,842
Cash Instruments Assets [Member] | Loans and Securities Backed by Commercial Real Estate [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	2,310	2,197
Cash Instruments Assets [Member] | Loans and Securities Backed by Commercial Real Estate [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	1,126	1,645
Cash Instruments Assets [Member] | Loans and Securities Backed by Residential Real Estate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	11,993	12,195
Cash Instruments Assets [Member] | Loans and Securities Backed by Residential Real Estate [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	11,325	11,350
Cash Instruments Assets [Member] | Loans and Securities Backed by Residential Real Estate [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	668	845
Cash Instruments Assets [Member] | Corporate Loans And Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	33,683	28,659
Cash Instruments Assets [Member] | Corporate Loans And Debt Securities [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	752	215
Cash Instruments Assets [Member] | Corporate Loans And Debt Securities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	29,661	23,804
Cash Instruments Assets [Member] | Corporate Loans And Debt Securities [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	3,270	4,640
Cash Instruments Assets [Member] | State and Municipal Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	1,471	1,059
Cash Instruments Assets [Member] | State and Municipal Obligations [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	1,401	960
Cash Instruments Assets [Member] | State and Municipal Obligations [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	70	99
Cash Instruments Assets [Member] | Other Debt Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	2,164	1,358
Cash Instruments Assets [Member] | Other Debt Obligations [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	1,812	830
Cash Instruments Assets [Member] | Other Debt Obligations [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	352	528
Cash Instruments Assets [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	96,132	94,692
Cash Instruments Assets [Member] | Equity Securities [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	76,044	77,276
Cash Instruments Assets [Member] | Equity Securities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	10,184	7,153
Cash Instruments Assets [Member] | Equity Securities [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	9,904	10,263
Cash Instruments Assets [Member] | Commodities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	3,194	5,653
Cash Instruments Assets [Member] | Commodities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned	3,194	5,653
Cash Instruments Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased	(72,299)	(69,644)
Cash Instruments Liabilities [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased	(63,533)	(61,522)
Cash Instruments Liabilities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased	(8,698)	(8,060)
Cash Instruments Liabilities [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased	(68)	(62)
Cash Instruments Liabilities [Member] | U.S. Government and Agency Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased	(17,911)	(16,627)
Cash Instruments Liabilities [Member] | U.S. Government and Agency Obligations [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased	(17,845)	(16,615)
Cash Instruments Liabilities [Member] | U.S. Government and Agency Obligations [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased	(66)	(12)
Cash Instruments Liabilities [Member] | Non-U.S. Government and Agency Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased	(23,311)	(20,502)
Cash Instruments Liabilities [Member] | Non-U.S. Government and Agency Obligations [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased	(21,820)	(19,137)
Cash Instruments Liabilities [Member] | Non-U.S. Government and Agency Obligations [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased	(1,491)	(1,364)
Cash Instruments Liabilities [Member] | Non-U.S. Government and Agency Obligations [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased		(1)
Cash Instruments Liabilities [Member] | Loans and Securities Backed by Commercial Real Estate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased	(1)
Cash Instruments Liabilities [Member] | Loans and Securities Backed by Commercial Real Estate [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased	(1)
Cash Instruments Liabilities [Member] | Loans and Securities Backed by Residential Real Estate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased		(3)
Cash Instruments Liabilities [Member] | Loans and Securities Backed by Residential Real Estate [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased		(3)
Cash Instruments Liabilities [Member] | Corporate Loans And Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased	(7,153)	(6,570)
Cash Instruments Liabilities [Member] | Corporate Loans And Debt Securities [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased	(2)	(2)
Cash Instruments Liabilities [Member] | Corporate Loans And Debt Securities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased	(7,099)	(6,524)
Cash Instruments Liabilities [Member] | Corporate Loans And Debt Securities [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased	(52)	(44)
Cash Instruments Liabilities [Member] | Other Debt Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased	(1)	(1)
Cash Instruments Liabilities [Member] | Other Debt Obligations [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased	(1)	(1)
Cash Instruments Liabilities [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased	(23,882)	(25,941)
Cash Instruments Liabilities [Member] | Equity Securities [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased	(23,866)	(25,768)
Cash Instruments Liabilities [Member] | Equity Securities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased		(156)
Cash Instruments Liabilities [Member] | Equity Securities [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased	(16)	$ (17)
Cash Instruments Liabilities [Member] | Commodities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased	(40)
Cash Instruments Liabilities [Member] | Commodities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments sold, but not yet purchased	$ (40)

Cash Instruments - Cash Instr73

Cash Instruments - Cash Instruments by Level (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned, at fair value	$ 315,988	$ 295,952
Cash Instruments Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned, at fair value	264,055	235,815
Level 2 [Member] | Cash Instruments Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned, at fair value	93,600	82,414
Level 2 [Member] | Cash Instruments Assets [Member] | CDOs and CLOs Backed by Real Estate and Corporate Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned, at fair value	918	461
Level 3 [Member] | Cash Instruments Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned, at fair value	15,395	18,035
Level 3 [Member] | Cash Instruments Assets [Member] | CDOs and CLOs Backed by Real Estate and Corporate Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial instruments owned, at fair value	$ 250	$ 624

Cash Instruments - Fair Value,

Cash Instruments - Fair Value, Cash Instruments, Measurement Inputs, Disclosure (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total financial assets at fair value	$ 518,123	$ 497,693
Loans and Securities Backed by Commercial Real Estate [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Unobservable Inputs, Yield	4.60%	3.70%
Fair Value Unobservable Inputs, Recovery Rate	14.30%	8.90%
Fair Value Unobservable Inputs, Duration	9 months 18 days	9 months 18 days
Loans and Securities Backed by Commercial Real Estate [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Unobservable Inputs, Yield	22.00%	23.00%
Fair Value Unobservable Inputs, Recovery Rate	89.00%	99.00%
Fair Value Unobservable Inputs, Duration	6 years 4 months 24 days	6 years 2 months 12 days
Loans and Securities Backed by Commercial Real Estate [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Unobservable Inputs, Yield	13.40%	13.00%
Fair Value Unobservable Inputs, Recovery Rate	43.80%	60.60%
Fair Value Unobservable Inputs, Duration	2 years 1 month 6 days	2 years 1 month 6 days
Loans and Securities Backed by Residential Real Estate [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Unobservable Inputs, Yield	2.30%	0.80%
Fair Value Unobservable Inputs, Cumulative Loss Rate	12.50%	8.90%
Fair Value Unobservable Inputs, Duration	8 months 12 days	1 year 1 month 6 days
Loans and Securities Backed by Residential Real Estate [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Unobservable Inputs, Yield	15.00%	15.60%
Fair Value Unobservable Inputs, Cumulative Loss Rate	43.00%	47.10%
Fair Value Unobservable Inputs, Duration	14 years	16 years 1 month 6 days
Loans and Securities Backed by Residential Real Estate [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Unobservable Inputs, Yield	8.30%	8.70%
Fair Value Unobservable Inputs, Cumulative Loss Rate	21.80%	24.20%
Fair Value Unobservable Inputs, Duration	6 years 10 months 25 days	7 years 3 months 18 days
Corporate Loans And Debt Securities [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Unobservable Inputs, Yield	3.60%	2.50%
Fair Value Unobservable Inputs, Recovery Rate	0.00%	0.00%
Fair Value Unobservable Inputs, Duration	6 months	7 months 6 days
Corporate Loans And Debt Securities [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Unobservable Inputs, Yield	24.50%	25.00%
Fair Value Unobservable Inputs, Recovery Rate	85.30%	85.00%
Fair Value Unobservable Inputs, Duration	7 years 7 months 6 days	15 years 8 months 12 days
Corporate Loans And Debt Securities [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Unobservable Inputs, Yield	12.30%	10.30%
Fair Value Unobservable Inputs, Recovery Rate	62.80%	56.50%
Fair Value Unobservable Inputs, Duration	3 years 2 months 12 days	2 years 10 months 24 days
Equity Securities [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Unobservable Inputs, Multiples	1.1	0.8
Fair Value Unobservable Inputs, Discount Rate/Yield	3.00%	6.50%
Fair Value Unobservable Inputs, Capitalization Rates	4.30%	4.20%
Equity Securities [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Unobservable Inputs, Multiples	30.5	19.7
Fair Value Unobservable Inputs, Discount Rate/Yield	20.30%	25.00%
Fair Value Unobservable Inputs, Capitalization Rates	12.00%	12.50%
Equity Securities [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Unobservable Inputs, Multiples	8.9	6.8
Fair Value Unobservable Inputs, Discount Rate/Yield	14.00%	16.00%
Fair Value Unobservable Inputs, Capitalization Rates	6.10%	6.80%
Other Cash Instruments [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Unobservable Inputs, Yield	4.00%	1.90%
Fair Value Unobservable Inputs, Recovery Rate		0.00%
Fair Value Unobservable Inputs, Duration	3 years 6 months	10 months 24 days
Other Cash Instruments [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Unobservable Inputs, Yield	11.70%	14.00%
Fair Value Unobservable Inputs, Recovery Rate		93.00%
Fair Value Unobservable Inputs, Duration	11 years 4 months 24 days	12 years
Other Cash Instruments [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Unobservable Inputs, Yield	8.40%	8.80%
Fair Value Unobservable Inputs, Recovery Rate		61.40%
Fair Value Unobservable Inputs, Duration	5 years 1 month 6 days	4 years 3 months 18 days
Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total financial assets at fair value	$ 19,201	$ 23,280
Level 3 [Member] | Loans and Securities Backed by Commercial Real Estate [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total financial assets at fair value	1,126	1,645
Level 3 [Member] | Loans and Securities Backed by Residential Real Estate [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total financial assets at fair value	668	845
Level 3 [Member] | Corporate Loans And Debt Securities [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total financial assets at fair value	3,270	4,640
Level 3 [Member] | Equity Securities [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total financial assets at fair value	9,904	10,263
Level 3 [Member] | Other Cash Instruments [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Total financial assets at fair value	$ 427	$ 642

Cash Instruments - Additional I

Cash Instruments - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Transfers of cash instruments from level 1 to level 2	$ 63	$ 135
Transfers of cash instruments from level 2 to level 1	154	267
Cash Instruments Assets [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net gains / (losses) on assets	1,560	971
Net realized gains / (losses) on assets	419	574
Net unrealized gains / (losses) on assets relating to instruments still held at the reporting date	1,144	397
Cash Instruments Assets [Member] | Market making [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net gains / (losses) on assets	(99)	(311)
Cash Instruments Assets [Member] | Other Principal Transactions [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net gains / (losses) on assets	1,130	625
Cash Instruments Assets [Member] | Interest Income [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net gains / (losses) on assets	$ 532	$ 657

Cash Instruments - Cash Instr76

Cash Instruments - Cash Instruments, Level 3 Rollforward (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Cash Instruments Assets [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value, Beginning Balance	$ 18,035	$ 18,131
Net Realized Gains / (Losses)	419	574
Net Unrealized Gains / (Losses)	1,144	397
Purchases	1,635	3,072
Sales	(3,315)	(2,326)
Settlements	(2,265)	(3,503)
Transfers Into Level 3	2,405	3,405
Transfers Out Of Level 3	(2,663)	(1,715)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value, Ending Balance	15,395	18,035
Cash Instruments Assets [Member] | Loans and Securities Backed by Commercial Real Estate [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value, Beginning Balance	1,645	1,924
Net Realized Gains / (Losses)	35	60
Net Unrealized Gains / (Losses)	71	(19)
Purchases	176	331
Sales	(319)	(320)
Settlements	(392)	(617)
Transfers Into Level 3	141	510
Transfers Out Of Level 3	(231)	(224)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value, Ending Balance	1,126	1,645
Cash Instruments Assets [Member] | Loans and Securities Backed by Residential Real Estate [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value, Beginning Balance	845	1,765
Net Realized Gains / (Losses)	37	60
Net Unrealized Gains / (Losses)	96	26
Purchases	98	298
Sales	(246)	(791)
Settlements	(104)	(278)
Transfers Into Level 3	21	73
Transfers Out Of Level 3	(79)	(308)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value, Ending Balance	668	845
Cash Instruments Assets [Member] | Corporate Loans And Debt Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value, Beginning Balance	4,640	5,242
Net Realized Gains / (Losses)	145	261
Net Unrealized Gains / (Losses)	(13)	34
Purchases	666	1,078
Sales	(1,003)	(645)
Settlements	(1,062)	(1,823)
Transfers Into Level 3	1,130	1,023
Transfers Out Of Level 3	(1,233)	(530)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value, Ending Balance	3,270	4,640
Cash Instruments Assets [Member] | Equity Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value, Beginning Balance	10,263	8,549
Net Realized Gains / (Losses)	185	158
Net Unrealized Gains / (Losses)	982	371
Purchases	624	1,122
Sales	(1,702)	(412)
Settlements	(559)	(634)
Transfers Into Level 3	1,113	1,732
Transfers Out Of Level 3	(1,002)	(623)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value, Ending Balance	9,904	10,263
Cash Instruments Assets [Member] | Other Cash Instruments [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value, Beginning Balance	642	651
Net Realized Gains / (Losses)	17	35
Net Unrealized Gains / (Losses)	8	(15)
Purchases	71	243
Sales	(45)	(158)
Settlements	(148)	(151)
Transfers Into Level 3		67
Transfers Out Of Level 3	(118)	(30)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value, Ending Balance	427	642
Cash Instruments Liabilities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value, Beginning Balance	(62)	(193)
Net Realized Gains / (Losses)	(8)	20
Net Unrealized Gains / (Losses)	(28)	19
Purchases	97	91
Sales	(20)	(49)
Settlements	(32)	(7)
Transfers Into Level 3	(18)	(12)
Transfers Out Of Level 3	3	69
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value, Ending Balance	$ (68)	$ (62)

Cash Instruments - Securities A

Cash Instruments - Securities Accounted for As Available-for-Sale Included in Cash Instruments (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 9,293	$ 89
Fair Value	$ 9,276	$ 89
Weighted Average Yield	2.27%	2.32%
U.S. government obligations Available-for-sale Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 9,041	$ 24
Fair Value	$ 9,022	$ 24
Weighted Average Yield	2.22%	0.43%
U.S. government obligations Available-for-sale Securities [Member] | Less than 5 years [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 3,834	$ 24
Fair Value	$ 3,800	$ 24
Weighted Average Yield	1.95%	0.43%
U.S. government obligations Available-for-sale Securities [Member] | Greater than 5 years [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 5,207
Fair Value	$ 5,222
Weighted Average Yield	2.41%
Other Available-for-sale Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 252	$ 65
Fair Value	$ 254	$ 65
Weighted Average Yield	4.30%	3.03%
Other Available-for-sale Securities [Member] | Less than 5 years [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 19	$ 31
Fair Value	$ 19	$ 31
Weighted Average Yield	0.43%	2.11%
Other Available-for-sale Securities [Member] | Greater than 5 years [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 233	$ 34
Fair Value	$ 235	$ 34
Weighted Average Yield	4.62%	3.85%

Cash Instruments - Investments

Cash Instruments - Investments in Funds that are Calculated Using Net Asset Value Per Share (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Cash Instruments Assets [Member]
Fair Value, Investments, Entities That Are Calculated Using Net Asset Value Per Share [Line Items]
Fair Value of Investments	$ 4,596	$ 6,465
Cash Instruments Liabilities [Member]
Fair Value, Investments, Entities That Are Calculated Using Net Asset Value Per Share [Line Items]
Unfunded Commitments	1,800	1,831
Private Equity Funds [Member] | Cash Instruments Assets [Member]
Fair Value, Investments, Entities That Are Calculated Using Net Asset Value Per Share [Line Items]
Fair Value of Investments	3,478	4,628
Private Equity Funds [Member] | Cash Instruments Liabilities [Member]
Fair Value, Investments, Entities That Are Calculated Using Net Asset Value Per Share [Line Items]
Unfunded Commitments	614	1,393
Credit Funds [Member] | Cash Instruments Assets [Member]
Fair Value, Investments, Entities That Are Calculated Using Net Asset Value Per Share [Line Items]
Fair Value of Investments	266	421
Credit Funds [Member] | Cash Instruments Liabilities [Member]
Fair Value, Investments, Entities That Are Calculated Using Net Asset Value Per Share [Line Items]
Unfunded Commitments	985	166
Hedge Funds [Member] | Cash Instruments Assets [Member]
Fair Value, Investments, Entities That Are Calculated Using Net Asset Value Per Share [Line Items]
Fair Value of Investments	223	410
Real Estate Funds [Member] | Cash Instruments Assets [Member]
Fair Value, Investments, Entities That Are Calculated Using Net Asset Value Per Share [Line Items]
Fair Value of Investments	629	1,006
Real Estate Funds [Member] | Cash Instruments Liabilities [Member]
Fair Value, Investments, Entities That Are Calculated Using Net Asset Value Per Share [Line Items]
Unfunded Commitments	$ 201	$ 272

Derivatives and Hedging Activ79

Derivatives and Hedging Activities - Fair Value of Derivatives on a Gross Basis (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	$ 466,863	$ 706,239
Total Gross Fair Value of Derivative Liability Contracts	442,657	657,723
Derivative Assets	47,337	53,672
Derivative Liabilities	39,631	47,499
Cash collateral received	(602)	(535)
Cash collateral posted	(2,375)	(2,085)
Securities collateral received	(13,947)	(15,518)
Securities collateral posted	(8,722)	(10,224)
Total	32,788	37,619
Total	28,534	35,190
Notional amount	48,865,346	41,375,552
Counterparty Netting [Member]
Derivative [Line Items]
Offset amounts	(364,054)	(567,238)
Offset amounts	(364,054)	(567,238)
Cash Collateral Netting [Member]
Derivative [Line Items]
Offset amounts	(55,472)	(85,329)
Offset amounts	(38,972)	(42,986)
Counterparty and Cash Collateral Netting [Member]
Derivative [Line Items]
Offset amounts	(419,526)	(652,567)
Offset amounts	(403,026)	(610,224)
Derivative Contract not Designated as Hedges [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	464,484	697,627
Total Gross Fair Value of Derivative Liability Contracts	442,510	657,453
Notional amount	48,786,816	41,273,370
Derivative Contract not Designated as Hedges [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	280,932	498,951
Total Gross Fair Value of Derivative Liability Contracts	253,167	458,819
Notional amount	37,814,394	32,203,119
Derivative Contract not Designated as Hedges [Member] | Credit Risk Contract [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	22,693	26,367
Total Gross Fair Value of Derivative Liability Contracts	21,270	23,581
Notional amount	1,254,389	1,424,345
Derivative Contract not Designated as Hedges [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	95,492	111,864
Total Gross Fair Value of Derivative Liability Contracts	96,337	107,292
Notional amount	7,440,515	5,653,347
Derivative Contract not Designated as Hedges [Member] | Commodity Contract [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	14,080	12,353
Total Gross Fair Value of Derivative Liability Contracts	16,148	13,871
Notional amount	494,221	428,112
Derivative Contract not Designated as Hedges [Member] | Equity Contract [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	51,287	48,092
Total Gross Fair Value of Derivative Liability Contracts	55,588	53,890
Notional amount	1,783,297	1,564,447
Derivative Contracts Accounted for as Hedges [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	2,379	8,612
Total Gross Fair Value of Derivative Liability Contracts	147	270
Notional amount	78,530	102,182
Derivative Contracts Accounted for as Hedges [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	2,330	8,527
Total Gross Fair Value of Derivative Liability Contracts	3	166
Notional amount	67,973	91,935
Derivative Contracts Accounted for as Hedges [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	49	85
Total Gross Fair Value of Derivative Liability Contracts	144	104
Notional amount	10,557	10,247
Exchange-Traded [Member]
Derivative [Line Items]
Derivative Assets	2,301	2,547
Derivative Liabilities	2,233	2,082
Exchange-Traded [Member] | Counterparty Netting [Member]
Derivative [Line Items]
Offset amounts	(12,963)	(9,727)
Offset amounts	(12,963)	(9,727)
Exchange-Traded [Member] | Derivative Contract not Designated as Hedges [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	554	443
Total Gross Fair Value of Derivative Liability Contracts	644	382
Notional amount	10,212,510	4,425,532
Exchange-Traded [Member] | Derivative Contract not Designated as Hedges [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	23	36
Total Gross Fair Value of Derivative Liability Contracts	363	176
Notional amount	10,450	13,800
Exchange-Traded [Member] | Derivative Contract not Designated as Hedges [Member] | Commodity Contract [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	4,135	3,219
Total Gross Fair Value of Derivative Liability Contracts	3,854	3,187
Notional amount	239,749	227,707
Exchange-Traded [Member] | Derivative Contract not Designated as Hedges [Member] | Equity Contract [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	10,552	8,576
Total Gross Fair Value of Derivative Liability Contracts	10,335	8,064
Notional amount	655,485	605,335
OTC-Cleared [Member]
Derivative [Line Items]
Derivative Assets	650	246
Derivative Liabilities	70	144
OTC-Cleared [Member] | Counterparty Netting [Member]
Derivative [Line Items]
Offset amounts	(9,267)	(171,864)
Offset amounts	(9,267)	(171,864)
OTC-Cleared [Member] | Cash Collateral Netting [Member]
Derivative [Line Items]
Offset amounts	(2,423)	(27,560)
Offset amounts	(180)	(2,940)
OTC-Cleared [Member] | Derivative Contract not Designated as Hedges [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	5,392	189,471
Total Gross Fair Value of Derivative Liability Contracts	2,773	168,946
Notional amount	14,739,556	16,646,145
OTC-Cleared [Member] | Derivative Contract not Designated as Hedges [Member] | Credit Risk Contract [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	5,727	4,837
Total Gross Fair Value of Derivative Liability Contracts	5,670	4,811
Notional amount	386,163	378,432
OTC-Cleared [Member] | Derivative Contract not Designated as Hedges [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	988	796
Total Gross Fair Value of Derivative Liability Contracts	847	798
Notional amount	98,549	62,799
OTC-Cleared [Member] | Derivative Contract not Designated as Hedges [Member] | Commodity Contract [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	197	189
Total Gross Fair Value of Derivative Liability Contracts	197	197
Notional amount	3,925	3,506
OTC-Cleared [Member] | Derivative Contracts Accounted for as Hedges [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	21	4,347
Total Gross Fair Value of Derivative Liability Contracts		156
Notional amount	52,785	55,328
OTC-Cleared [Member] | Derivative Contracts Accounted for as Hedges [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	15	30
Total Gross Fair Value of Derivative Liability Contracts	30	40
Notional amount	2,210	1,703
Bilateral OTC [Member]
Derivative [Line Items]
Derivative Assets	44,386	50,879
Derivative Liabilities	37,328	45,273
Bilateral OTC [Member] | Counterparty Netting [Member]
Derivative [Line Items]
Offset amounts	(341,824)	(385,647)
Offset amounts	(341,824)	(385,647)
Bilateral OTC [Member] | Cash Collateral Netting [Member]
Derivative [Line Items]
Offset amounts	(53,049)	(57,769)
Offset amounts	(38,792)	(40,046)
Bilateral OTC [Member] | Derivative Contract not Designated as Hedges [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	274,986	309,037
Total Gross Fair Value of Derivative Liability Contracts	249,750	289,491
Notional amount	12,862,328	11,131,442
Bilateral OTC [Member] | Derivative Contract not Designated as Hedges [Member] | Credit Risk Contract [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	16,966	21,530
Total Gross Fair Value of Derivative Liability Contracts	15,600	18,770
Notional amount	868,226	1,045,913
Bilateral OTC [Member] | Derivative Contract not Designated as Hedges [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	94,481	111,032
Total Gross Fair Value of Derivative Liability Contracts	95,127	106,318
Notional amount	7,331,516	5,576,748
Bilateral OTC [Member] | Derivative Contract not Designated as Hedges [Member] | Commodity Contract [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	9,748	8,945
Total Gross Fair Value of Derivative Liability Contracts	12,097	10,487
Notional amount	250,547	196,899
Bilateral OTC [Member] | Derivative Contract not Designated as Hedges [Member] | Equity Contract [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	40,735	39,516
Total Gross Fair Value of Derivative Liability Contracts	45,253	45,826
Notional amount	1,127,812	959,112
Bilateral OTC [Member] | Derivative Contracts Accounted for as Hedges [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	2,309	4,180
Total Gross Fair Value of Derivative Liability Contracts	3	10
Notional amount	15,188	36,607
Bilateral OTC [Member] | Derivative Contracts Accounted for as Hedges [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Total Gross Fair Value of Derivative Asset Contracts	34	55
Total Gross Fair Value of Derivative Liability Contracts	114	64
Notional amount	$ 8,347	$ 8,544

Derivatives and Hedging Activ80

Derivatives and Hedging Activities - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Derivative [Line Items]
Gross Fair Value of Derivative Asset Contracts Not Enforceable	$ 11,240	$ 19,920
Gross Fair Value of Derivative Liability Contracts Not Enforceable	13,000	20,790
Impact of reflecting transactions with clearing organization as settled as of December 2016 in gross interest rate and credit derivative assets	(189,080)
Impact of reflecting transactions with clearing organization as settled as of December 2016 in gross interest rate and credit derivative liabilities	(166,040)
Net Gains / (Losses) on Derivative assets and liabilities	(555)	740
Net Realized Gains / (Losses) on Derivative assets and liabilities	(119)	(37)
Net Unrealized Gains / (Losses) on Derivative assets and liabilities	(436)	777
Maximum Payout/Notional Amount of Written Credit Derivative	611,040	690,466
Maximum Payout/Notional Amount of Purchased Credit Derivatives	643,370	733,980
Net purchased protection notional value of credit derivatives	32,330	43,510
Net Gain/(Loss), Including Hedges, Attributable to the Impact of Changes in Credit Exposure and Credit Spreads on Derivative Contracts	66	85	$ 9
Net gain/(loss) reclassified to earnings from accumulated other comprehensive income	41	28
Loss on the related net investments in non-U.S.operations	(164)	(139)
Foreign Currency Denominated Debt Designated As Foreign Currency Hedge	1,810	1,690
Net Investment Hedging [Member]
Derivative [Line Items]
Net gain reclassified to earnings from accumulated other comprehensive income	205	167
Market making [Member]
Derivative [Line Items]
Net Gains / (Losses) on Derivative assets and liabilities	(90)	980
Other Principal Transactions [Member]
Derivative [Line Items]
Net Gains / (Losses) on Derivative assets and liabilities	$ (465)	$ (240)

Derivatives and Hedging Activ81

Derivatives and Hedging Activities - Fair Value of Derivatives by Level (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Derivative [Line Items]
Total financial assets at fair value	$ 518,123	$ 497,693
Fair value included in financial instruments owned	315,988	295,952
Total financial liabilities at fair value	(305,062)	(271,284)
Fair value included in financial instruments sold, but not yet purchased	(111,930)	(117,143)
Level 1 [Member]
Derivative [Line Items]
Total financial assets at fair value	155,086	135,401
Total financial liabilities at fair value	(63,589)	(62,504)
Level 2 [Member]
Derivative [Line Items]
Total financial assets at fair value	395,606	419,585
Total financial liabilities at fair value	(261,719)	(232,027)
Level 3 [Member]
Derivative [Line Items]
Total financial assets at fair value	19,201	23,280
Total financial liabilities at fair value	(19,620)	(21,448)
Derivatives [Member]
Derivative [Line Items]
Total financial assets at fair value	103,703	140,710
Fair value included in financial instruments owned	47,337	53,672
Total financial liabilities at fair value	(79,497)	(92,194)
Fair value included in financial instruments sold, but not yet purchased	(39,631)	(47,499)
Derivatives [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Total financial assets at fair value	283,262	507,478
Total financial liabilities at fair value	(253,170)	(458,985)
Derivatives [Member] | Credit Risk Contract [Member]
Derivative [Line Items]
Total financial assets at fair value	22,693	26,367
Total financial liabilities at fair value	(21,270)	(23,581)
Derivatives [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Total financial assets at fair value	95,541	111,949
Total financial liabilities at fair value	(96,481)	(107,396)
Derivatives [Member] | Commodity Contract [Member]
Derivative [Line Items]
Total financial assets at fair value	14,080	12,353
Total financial liabilities at fair value	(16,148)	(13,871)
Derivatives [Member] | Equity Contract [Member]
Derivative [Line Items]
Total financial assets at fair value	51,287	48,092
Total financial liabilities at fair value	(55,588)	(53,890)
Derivatives [Member] | Gross Fair Value Of Derivative [Member]
Derivative [Line Items]
Total financial assets at fair value	466,863	706,239
Total financial liabilities at fair value	(442,657)	(657,723)
Derivatives [Member] | Counterparty Netting in Levels [Member]
Derivative [Line Items]
Total financial assets at fair value	(363,160)	(565,529)
Total financial liabilities at fair value	363,160	565,529
Derivatives [Member] | Cross Level Counterparty Netting Adjustment [Member]
Derivative [Line Items]
Total financial assets at fair value	(894)	(1,709)
Total financial liabilities at fair value	894	1,709
Derivatives [Member] | Cash Collateral Netting [Member]
Derivative [Line Items]
Cash collateral netting	(55,472)	(85,329)
Cash collateral netting	38,972	42,986
Derivatives [Member] | Level 1 [Member]
Derivative [Line Items]
Total financial assets at fair value	26	35
Total financial liabilities at fair value	(56)	(982)
Derivatives [Member] | Level 1 [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Total financial assets at fair value	18	46
Total financial liabilities at fair value	(28)	(27)
Derivatives [Member] | Level 1 [Member] | Equity Contract [Member]
Derivative [Line Items]
Total financial assets at fair value	8	1
Total financial liabilities at fair value	(28)	(967)
Derivatives [Member] | Level 1 [Member] | Gross Fair Value Of Derivative [Member]
Derivative [Line Items]
Total financial assets at fair value	26	47
Total financial liabilities at fair value	(56)	(994)
Derivatives [Member] | Level 1 [Member] | Counterparty Netting in Levels [Member]
Derivative [Line Items]
Total financial assets at fair value		(12)
Total financial liabilities at fair value		12
Derivatives [Member] | Level 2 [Member]
Derivative [Line Items]
Total financial assets at fair value	99,875	135,485
Total financial liabilities at fair value	(75,351)	(84,805)
Derivatives [Member] | Level 2 [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Total financial assets at fair value	282,933	506,818
Total financial liabilities at fair value	(252,421)	(457,963)
Derivatives [Member] | Level 2 [Member] | Credit Risk Contract [Member]
Derivative [Line Items]
Total financial assets at fair value	19,053	21,388
Total financial liabilities at fair value	(19,135)	(21,106)
Derivatives [Member] | Level 2 [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Total financial assets at fair value	95,401	111,762
Total financial liabilities at fair value	(96,160)	(107,212)
Derivatives [Member] | Level 2 [Member] | Commodity Contract [Member]
Derivative [Line Items]
Total financial assets at fair value	13,727	11,950
Total financial liabilities at fair value	(15,842)	(13,541)
Derivatives [Member] | Level 2 [Member] | Equity Contract [Member]
Derivative [Line Items]
Total financial assets at fair value	50,870	47,667
Total financial liabilities at fair value	(53,902)	(49,083)
Derivatives [Member] | Level 2 [Member] | Gross Fair Value Of Derivative [Member]
Derivative [Line Items]
Total financial assets at fair value	461,984	699,585
Total financial liabilities at fair value	(437,460)	(648,905)
Derivatives [Member] | Level 2 [Member] | Counterparty Netting in Levels [Member]
Derivative [Line Items]
Total financial assets at fair value	(362,109)	(564,100)
Total financial liabilities at fair value	362,109	564,100
Derivatives [Member] | Level 3 [Member]
Derivative [Line Items]
Total financial assets at fair value	3,802	5,190
Total financial liabilities at fair value	(4,090)	(6,407)
Derivatives [Member] | Level 3 [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Total financial assets at fair value	311	614
Total financial liabilities at fair value	(721)	(995)
Derivatives [Member] | Level 3 [Member] | Credit Risk Contract [Member]
Derivative [Line Items]
Total financial assets at fair value	3,640	4,979
Total financial liabilities at fair value	(2,135)	(2,475)
Derivatives [Member] | Level 3 [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Total financial assets at fair value	140	187
Total financial liabilities at fair value	(321)	(184)
Derivatives [Member] | Level 3 [Member] | Commodity Contract [Member]
Derivative [Line Items]
Total financial assets at fair value	353	403
Total financial liabilities at fair value	(306)	(330)
Derivatives [Member] | Level 3 [Member] | Equity Contract [Member]
Derivative [Line Items]
Total financial assets at fair value	409	424
Total financial liabilities at fair value	(1,658)	(3,840)
Derivatives [Member] | Level 3 [Member] | Gross Fair Value Of Derivative [Member]
Derivative [Line Items]
Total financial assets at fair value	4,853	6,607
Total financial liabilities at fair value	(5,141)	(7,824)
Derivatives [Member] | Level 3 [Member] | Counterparty Netting in Levels [Member]
Derivative [Line Items]
Total financial assets at fair value	(1,051)	(1,417)
Total financial liabilities at fair value	$ 1,051	$ 1,417

Derivatives and Hedging Activ82

Derivatives and Hedging Activities - Fair Value, Derivatives, Measurement Inputs, Disclosure (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)$ / Bbls$ / MMBTU	Dec. 31, 2016USD ($)$ / Bbls$ / MMBTU	Dec. 31, 2015USD ($)
Fair Value Measurement Inputs Disclosure [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Derivative Contracts Net Value, Ending Balance	$ (288)	$ (1,217)	$ 495
Interest Rate Contract [Member]
Fair Value Measurement Inputs Disclosure [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Derivative Contracts Net Value, Ending Balance	$ (410)	$ (381)	(398)
Fair Value Unobservable Inputs, Average Correlation	71.00%	56.00%
Fair Value Unobservable Inputs, Median Correlation	79.00%	60.00%
Fair Value Unobservable Input, Average Volatility	0.84%	0.84%
Fair Value Unobservable Input, Median Volatility	0.78%	0.57%
Credit Risk Contract [Member]
Fair Value Measurement Inputs Disclosure [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Derivative Contracts Net Value, Ending Balance	$ 1,505	$ 2,504	2,793
Fair Value Unobservable Inputs, Average Correlation	61.00%	65.00%
Fair Value Unobservable Inputs, Median Correlation	60.00%	68.00%
Fair Value Unobservable Inputs, Average Credit spreads	0.69%	1.22%
Fair Value Unobservable Inputs, Median Credit spreads	0.42%	0.73%
Fair Value Unobservable Inputs, Average Upfront Credit Points	0.42%	0.43%
Fair Value Unobservable Inputs, Median Upfront Credit Points	0.38%	0.35%
Fair Value Unobservable Inputs, Average Recovery rates	68.00%	58.00%
Fair Value Unobservable Inputs, Median Recovery rates	73.00%	70.00%
Foreign Exchange Contract [Member]
Fair Value Measurement Inputs Disclosure [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Derivative Contracts Net Value, Ending Balance	$ (181)	$ 3	(34)
Fair Value Unobservable Inputs, Average Correlation	61.00%	50.00%
Fair Value Unobservable Inputs, Median Correlation	62.00%	55.00%
Commodity Contract [Member]
Fair Value Measurement Inputs Disclosure [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Derivative Contracts Net Value, Ending Balance	$ 47	$ 73	(262)
Fair Value Unobservable Input, Average Volatility	24.00%	33.00%
Fair Value Unobservable Input, Median Volatility	24.00%	33.00%
Commodity Contract [Member] | Natural Gas [Member]
Fair Value Measurement Inputs Disclosure [Line Items]
Fair Value Unobservable Inputs, Average Spread | $ / MMBTU	(0.22)	(0.14)
Fair Value Unobservable Inputs, Median Spread | $ / MMBTU	(0.12)	(0.05)
Commodity Contract [Member] | Oil [Member]
Fair Value Measurement Inputs Disclosure [Line Items]
Fair Value Unobservable Inputs, Average Spread | $ / Bbls	6.47	25.30
Fair Value Unobservable Inputs, Median Spread | $ / Bbls	2.35	16.43
Equity Contract [Member]
Fair Value Measurement Inputs Disclosure [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Derivative Contracts Net Value, Ending Balance	$ (1,249)	$ (3,416)	$ (1,604)
Fair Value Unobservable Inputs, Average Correlation	50.00%	41.00%
Fair Value Unobservable Inputs, Median Correlation	52.00%	41.00%
Fair Value Unobservable Input, Average Volatility	24.00%	24.00%
Fair Value Unobservable Input, Median Volatility	22.00%	23.00%
Minimum [Member] | Interest Rate Contract [Member]
Fair Value Measurement Inputs Disclosure [Line Items]
Fair Value Unobservable Inputs, Correlation	(10.00%)	(10.00%)
Fair Value Unobservable Input, Volatility	0.31%	0.31%
Minimum [Member] | Credit Risk Contract [Member]
Fair Value Measurement Inputs Disclosure [Line Items]
Fair Value Unobservable Inputs, Correlation	28.00%	35.00%
Fair Value Unobservable Inputs, Credit spreads	0.01%	0.01%
Fair Value Unobservable Inputs, Upfront Credit Points	0.00%	0.00%
Fair Value Unobservable Inputs, Recovery rates	22.00%	1.00%
Minimum [Member] | Foreign Exchange Contract [Member]
Fair Value Measurement Inputs Disclosure [Line Items]
Fair Value Unobservable Inputs, Correlation	49.00%	25.00%
Minimum [Member] | Commodity Contract [Member]
Fair Value Measurement Inputs Disclosure [Line Items]
Fair Value Unobservable Input, Volatility	9.00%	13.00%
Minimum [Member] | Commodity Contract [Member] | Natural Gas [Member]
Fair Value Measurement Inputs Disclosure [Line Items]
Fair Value Unobservable Inputs, Spread | $ / MMBTU	(2.38)	(1.81)
Minimum [Member] | Commodity Contract [Member] | Oil [Member]
Fair Value Measurement Inputs Disclosure [Line Items]
Fair Value Unobservable Inputs, Spread | $ / Bbls	(2.86)	(19.72)
Minimum [Member] | Equity Contract [Member]
Fair Value Measurement Inputs Disclosure [Line Items]
Fair Value Unobservable Inputs, Correlation	(36.00%)	(39.00%)
Fair Value Unobservable Input, Volatility	4.00%	5.00%
Maximum [Member] | Interest Rate Contract [Member]
Fair Value Measurement Inputs Disclosure [Line Items]
Fair Value Unobservable Inputs, Correlation	95.00%	86.00%
Fair Value Unobservable Input, Volatility	1.50%	1.51%
Maximum [Member] | Credit Risk Contract [Member]
Fair Value Measurement Inputs Disclosure [Line Items]
Fair Value Unobservable Inputs, Correlation	84.00%	91.00%
Fair Value Unobservable Inputs, Credit spreads	6.33%	9.93%
Fair Value Unobservable Inputs, Upfront Credit Points	0.97%	1.00%
Fair Value Unobservable Inputs, Recovery rates	73.00%	97.00%
Maximum [Member] | Foreign Exchange Contract [Member]
Fair Value Measurement Inputs Disclosure [Line Items]
Fair Value Unobservable Inputs, Correlation	72.00%	70.00%
Maximum [Member] | Commodity Contract [Member]
Fair Value Measurement Inputs Disclosure [Line Items]
Fair Value Unobservable Input, Volatility	79.00%	68.00%
Maximum [Member] | Commodity Contract [Member] | Natural Gas [Member]
Fair Value Measurement Inputs Disclosure [Line Items]
Fair Value Unobservable Inputs, Spread | $ / MMBTU	3.34	4.33
Maximum [Member] | Commodity Contract [Member] | Oil [Member]
Fair Value Measurement Inputs Disclosure [Line Items]
Fair Value Unobservable Inputs, Spread | $ / Bbls	23.61	64.92
Maximum [Member] | Equity Contract [Member]
Fair Value Measurement Inputs Disclosure [Line Items]
Fair Value Unobservable Inputs, Correlation	94.00%	88.00%
Fair Value Unobservable Input, Volatility	72.00%	72.00%

Derivatives and Hedging Activ83

Derivatives and Hedging Activities - Fair Value of Derivatives, Level 3 Rollforward (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Derivative [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Derivative Contracts Net Value, Beginning Balance	$ (1,217)	$ 495
Net Realized Gains / (Losses)	(119)	(37)
Net Unrealized Gains / (Losses)	(436)	777
Purchases	301	115
Sales	(611)	(3,557)
Settlements	1,891	782
Transfers Into Level 3	(39)	352
Transfers Out Of Level 3	(58)	(144)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Derivative Contracts Net Value, Ending Balance	(288)	(1,217)
Interest Rate Contract [Member]
Derivative [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Derivative Contracts Net Value, Beginning Balance	(381)	(398)
Net Realized Gains / (Losses)	(62)	(41)
Net Unrealized Gains / (Losses)	20	(138)
Purchases	4	5
Sales	(14)	(3)
Settlements	30	36
Transfers Into Level 3	(12)	195
Transfers Out Of Level 3	5	(37)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Derivative Contracts Net Value, Ending Balance	(410)	(381)
Credit Risk Contract [Member]
Derivative [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Derivative Contracts Net Value, Beginning Balance	2,504	2,793
Net Realized Gains / (Losses)	42
Net Unrealized Gains / (Losses)	(188)	196
Purchases	20	20
Sales	(27)	(73)
Settlements	(739)	(516)
Transfers Into Level 3	3	179
Transfers Out Of Level 3	(110)	(95)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Derivative Contracts Net Value, Ending Balance	1,505	2,504
Foreign Exchange Contract [Member]
Derivative [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Derivative Contracts Net Value, Beginning Balance	3	(34)
Net Realized Gains / (Losses)	(39)	(30)
Net Unrealized Gains / (Losses)	(192)	(42)
Purchases	4	14
Sales	(3)	(2)
Settlements	62	90
Transfers Into Level 3	(9)	1
Transfers Out Of Level 3	(7)	6
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Derivative Contracts Net Value, Ending Balance	(181)	3
Commodity Contract [Member]
Derivative [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Derivative Contracts Net Value, Beginning Balance	73	(262)
Net Realized Gains / (Losses)	(4)	(23)
Net Unrealized Gains / (Losses)	216	101
Purchases	102	24
Sales	(301)	(119)
Settlements	(27)	391
Transfers Into Level 3	(25)	(23)
Transfers Out Of Level 3	13	(16)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Derivative Contracts Net Value, Ending Balance	47	73
Equity Contract [Member]
Derivative [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Derivative Contracts Net Value, Beginning Balance	(3,416)	(1,604)
Net Realized Gains / (Losses)	(56)	57
Net Unrealized Gains / (Losses)	(292)	660
Purchases	171	52
Sales	(266)	(3,360)
Settlements	2,565	781
Transfers Into Level 3	4
Transfers Out Of Level 3	41	(2)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Derivative Contracts Net Value, Ending Balance	$ (1,249)	$ (3,416)

Derivatives and Hedging Activ84

Derivatives and Hedging Activities - OTC Derivatives by Product Type and Tenor (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Derivative [Line Items]
Derivative Assets	$ 47,337	$ 53,672
Derivative Liabilities	39,631	47,499
OTC [Member]
Derivative [Line Items]
Derivative Assets	116,912	153,850
Derivative Liabilities	92,774	105,799
OTC [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Derivative Assets	76,362	103,728
Derivative Liabilities	46,181	55,305
OTC [Member] | Credit Risk Contract [Member]
Derivative [Line Items]
Derivative Assets	8,177	9,347
Derivative Liabilities	6,754	6,555
OTC [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Derivative Assets	25,648	35,064
Derivative Liabilities	26,247	30,370
OTC [Member] | Commodity Contract [Member]
Derivative [Line Items]
Derivative Assets	5,882	4,867
Derivative Liabilities	8,231	6,416
OTC [Member] | Equity Contract [Member]
Derivative [Line Items]
Derivative Assets	11,963	13,731
Derivative Liabilities	16,481	20,040
OTC [Member] | Counterparty Netting in Tenors [Member]
Derivative [Line Items]
Derivative Assets	(11,120)	(12,887)
Derivative Liabilities	(11,120)	(12,887)
OTC [Member] | Cross Tenor Counterparty Netting [Member]
Derivative [Line Items]
Derivative Assets	(16,404)	(17,396)
Derivative Liabilities	(16,404)	(17,396)
OTC [Member] | Cash Collateral Netting [Member]
Derivative [Line Items]
Cash collateral netting	(55,472)	(85,329)
Cash collateral netting	(38,972)	(42,986)
OTC [Member] | Counterparty and Cash Collateral Netting [Member]
Derivative [Line Items]
Derivative Assets	45,036	51,125
Derivative Liabilities	37,398	45,417
Less than 1 Year [Member] | OTC [Member]
Derivative [Line Items]
Derivative Assets	21,086	28,823
Derivative Liabilities	27,254	28,462
Less than 1 Year [Member] | OTC [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Derivative Assets	3,717	5,845
Derivative Liabilities	4,517	5,679
Less than 1 Year [Member] | OTC [Member] | Credit Risk Contract [Member]
Derivative [Line Items]
Derivative Assets	760	1,763
Derivative Liabilities	2,078	2,060
Less than 1 Year [Member] | OTC [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Derivative Assets	12,184	18,344
Derivative Liabilities	14,326	14,720
Less than 1 Year [Member] | OTC [Member] | Commodity Contract [Member]
Derivative [Line Items]
Derivative Assets	3,175	3,273
Derivative Liabilities	3,599	2,546
Less than 1 Year [Member] | OTC [Member] | Equity Contract [Member]
Derivative [Line Items]
Derivative Assets	4,969	3,141
Derivative Liabilities	6,453	7,000
Less than 1 Year [Member] | OTC [Member] | Counterparty Netting in Tenors [Member]
Derivative [Line Items]
Derivative Assets	(3,719)	(3,543)
Derivative Liabilities	(3,719)	(3,543)
1 - 5 Years [Member] | OTC [Member]
Derivative [Line Items]
Derivative Assets	29,282	34,477
Derivative Liabilities	23,398	30,344
1 - 5 Years [Member] | OTC [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Derivative Assets	15,445	18,376
Derivative Liabilities	8,471	10,814
1 - 5 Years [Member] | OTC [Member] | Credit Risk Contract [Member]
Derivative [Line Items]
Derivative Assets	4,079	2,695
Derivative Liabilities	3,588	3,328
1 - 5 Years [Member] | OTC [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Derivative Assets	6,219	8,292
Derivative Liabilities	7,119	9,771
1 - 5 Years [Member] | OTC [Member] | Commodity Contract [Member]
Derivative [Line Items]
Derivative Assets	2,526	1,415
Derivative Liabilities	2,167	1,555
1 - 5 Years [Member] | OTC [Member] | Equity Contract [Member]
Derivative [Line Items]
Derivative Assets	5,607	9,249
Derivative Liabilities	6,647	10,426
1 - 5 Years [Member] | OTC [Member] | Counterparty Netting in Tenors [Member]
Derivative [Line Items]
Derivative Assets	(4,594)	(5,550)
Derivative Liabilities	(4,594)	(5,550)
Greater than 5 Years [Member] | OTC [Member]
Derivative [Line Items]
Derivative Assets	66,544	90,550
Derivative Liabilities	42,122	46,993
Greater than 5 Years [Member] | OTC [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Derivative Assets	57,200	79,507
Derivative Liabilities	33,193	38,812
Greater than 5 Years [Member] | OTC [Member] | Credit Risk Contract [Member]
Derivative [Line Items]
Derivative Assets	3,338	4,889
Derivative Liabilities	1,088	1,167
Greater than 5 Years [Member] | OTC [Member] | Foreign Exchange Contract [Member]
Derivative [Line Items]
Derivative Assets	7,245	8,428
Derivative Liabilities	4,802	5,879
Greater than 5 Years [Member] | OTC [Member] | Commodity Contract [Member]
Derivative [Line Items]
Derivative Assets	181	179
Derivative Liabilities	2,465	2,315
Greater than 5 Years [Member] | OTC [Member] | Equity Contract [Member]
Derivative [Line Items]
Derivative Assets	1,387	1,341
Derivative Liabilities	3,381	2,614
Greater than 5 Years [Member] | OTC [Member] | Counterparty Netting in Tenors [Member]
Derivative [Line Items]
Derivative Assets	(2,807)	(3,794)
Derivative Liabilities	$ (2,807)	$ (3,794)

Derivatives and Hedging Activ85

Derivatives and Hedging Activities - Credit Derivatives (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Derivative [Line Items]
Maximum Payout/Notional Amount of Written Credit Derivative	$ 611,040	$ 690,466
Maximum Payout/Notional Amount of Purchased Credit Derivatives	643,370	733,980
Offsetting Purchased Credit Derivatives [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Purchased Credit Derivatives	525,807	604,212
Other Purchased Credit Derivatives [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Purchased Credit Derivatives	117,563	129,765
Less than 1 Year [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Written Credit Derivative	195,749	223,191
1 - 5 Years [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Written Credit Derivative	362,373	409,092
Greater than 5 Years [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Written Credit Derivative	52,918	58,183
Written Credit Derivative [Member]
Derivative [Line Items]
Fair Value Asset of Written Credit Derivatives	15,193	14,757
Fair Value Liability of Written Credit Derivatives	5,970	9,833
Fair Value Net Asset/(Liability) of Written Credit Derivatives	9,223	4,924
0 - 250 [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Written Credit Derivative	567,758	635,912
0 - 250 [Member] | Offsetting Purchased Credit Derivatives [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Purchased Credit Derivatives	492,325	558,305
0 - 250 [Member] | Other Purchased Credit Derivatives [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Purchased Credit Derivatives	99,861	119,509
0 - 250 [Member] | Less than 1 Year [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Written Credit Derivative	182,446	207,727
0 - 250 [Member] | 1 - 5 Years [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Written Credit Derivative	335,872	375,208
0 - 250 [Member] | Greater than 5 Years [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Written Credit Derivative	49,440	52,977
0 - 250 [Member] | Written Credit Derivative [Member]
Derivative [Line Items]
Fair Value Asset of Written Credit Derivatives	14,317	13,919
Fair Value Liability of Written Credit Derivatives	896	2,436
Fair Value Net Asset/(Liability) of Written Credit Derivatives	13,421	11,483
251 - 500 [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Written Credit Derivative	20,874	27,002
251 - 500 [Member] | Offsetting Purchased Credit Derivatives [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Purchased Credit Derivatives	13,424	20,588
251 - 500 [Member] | Other Purchased Credit Derivatives [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Purchased Credit Derivatives	14,483	7,712
251 - 500 [Member] | Less than 1 Year [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Written Credit Derivative	8,531	5,819
251 - 500 [Member] | 1 - 5 Years [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Written Credit Derivative	10,201	17,255
251 - 500 [Member] | Greater than 5 Years [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Written Credit Derivative	2,142	3,928
251 - 500 [Member] | Written Credit Derivative [Member]
Derivative [Line Items]
Fair Value Asset of Written Credit Derivatives	513	606
Fair Value Liability of Written Credit Derivatives	402	902
Fair Value Net Asset/(Liability) of Written Credit Derivatives	111	(296)
501 - 1000 [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Written Credit Derivative	10,269	10,704
501 - 1000 [Member] | Offsetting Purchased Credit Derivatives [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Purchased Credit Derivatives	9,395	10,133
501 - 1000 [Member] | Other Purchased Credit Derivatives [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Purchased Credit Derivatives	1,777	1,098
501 - 1000 [Member] | Less than 1 Year [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Written Credit Derivative	705	1,016
501 - 1000 [Member] | 1 - 5 Years [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Written Credit Derivative	8,747	8,643
501 - 1000 [Member] | Greater than 5 Years [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Written Credit Derivative	817	1,045
501 - 1000 [Member] | Written Credit Derivative [Member]
Derivative [Line Items]
Fair Value Asset of Written Credit Derivatives	208	187
Fair Value Liability of Written Credit Derivatives	752	809
Fair Value Net Asset/(Liability) of Written Credit Derivatives	(544)	(622)
Greater than 1000 [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Written Credit Derivative	12,139	16,848
Greater than 1000 [Member] | Offsetting Purchased Credit Derivatives [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Purchased Credit Derivatives	10,663	15,186
Greater than 1000 [Member] | Other Purchased Credit Derivatives [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Purchased Credit Derivatives	1,442	1,446
Greater than 1000 [Member] | Less than 1 Year [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Written Credit Derivative	4,067	8,629
Greater than 1000 [Member] | 1 - 5 Years [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Written Credit Derivative	7,553	7,986
Greater than 1000 [Member] | Greater than 5 Years [Member]
Derivative [Line Items]
Maximum Payout/Notional Amount of Written Credit Derivative	519	233
Greater than 1000 [Member] | Written Credit Derivative [Member]
Derivative [Line Items]
Fair Value Asset of Written Credit Derivatives	155	45
Fair Value Liability of Written Credit Derivatives	3,920	5,686
Fair Value Net Asset/(Liability) of Written Credit Derivatives	$ (3,765)	$ (5,641)

Derivatives and Hedging Activ86

Derivatives and Hedging Activities - Bifurcated Embedded Derivatives (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Derivative [Line Items]
Embedded Derivative, Fair Value of Embedded Derivative Asset	$ 882	$ 676
Embedded Derivative, Fair Value of Embedded Derivative Liability	1,200	864
Embedded Derivative, Fair Value of Embedded Derivative, Net Liability	318	188
Notional amount	48,865,346	41,375,552
Embedded Derivatives Classified In Debt [Member]
Derivative [Line Items]
Notional amount	$ 9,578	$ 8,726

Derivatives and Hedging Activ87

Derivatives and Hedging Activities - Derivatives with Credit-Related Contingent Features (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Derivative [Line Items]
Aggregate fair value of derivative contracts which are in net liability position	$ 29,877	$ 32,927
Aggregate fair value of assets as a collateral for derivative contracts	25,329	27,840
One-Notch Reduction [Member]
Derivative [Line Items]
Additional collateral or termination payments pursuant to bilateral agreements with certain counterparties which could have been called by counterparties in the event of a reduction in the firm's long-term credit ratings	358	677
Two-Notch Reduction [Member]
Derivative [Line Items]
Additional collateral or termination payments pursuant to bilateral agreements with certain counterparties which could have been called by counterparties in the event of a reduction in the firm's long-term credit ratings	$ 1,856	$ 2,216

Derivatives and Hedging Activ88

Derivatives and Hedging Activities - Gain (Loss) from Interest Rate Hedges and Related Hedged Borrowings and Deposits (Detail) - Interest Rate Contract [Member] - Fair Value Hedging [Member] - Derivative Contracts Accounted for as Hedges [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Income, Net	$ (2,867)	$ (1,480)	$ (1,613)
Gain (Loss) Recognized On Hedged Borrowings and Deposits	2,183	834	898
Derivative, Net Hedge Ineffectiveness Gain (Loss)	$ (684)	$ (646)	$ (715)

Derivatives and Hedging Activ89

Derivatives and Hedging Activities - Gains and Losses on Net Investment Hedges (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Derivative [Line Items]
Gain (Loss) Recognized On Foreign Currency Denominated Debt Designated As Foreign Currency Hedge	$ (67)	$ (85)	$ (9)
Foreign Exchange Contract [Member] | Net Investment Hedging [Member]
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income, Effective Portion, Net	$ (805)	$ 135	$ 695

Fair Value Option - Financial A

Fair Value Option - Financial Assets and Financial Liabilities by Level (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities purchased under agreements to resell	$ 120,420	$ 116,077
Securities borrowed	78,189	82,398
Receivables from customers and counterparties	3,526	3,266
Total financial assets at fair value	202,135	201,741
Deposits	(22,902)	(13,782)
Securities sold under agreements to repurchase	(84,718)	(71,816)
Securities loaned	(5,357)	(2,647)
Other secured financings	(24,345)	(21,073)
Unsecured borrowings Short-term	(16,904)	(14,792)
Unsecured borrowings Long-term	(38,638)	(29,410)
Other liabilities and accrued expenses	(268)	(621)
Total financial liabilities at fair value	(193,132)	(154,141)
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities purchased under agreements to resell	120,420	116,077
Securities borrowed	78,189	82,398
Receivables from customers and counterparties	3,522	3,211
Total financial assets at fair value	202,131	201,686
Deposits	(19,934)	(10,609)
Securities sold under agreements to repurchase	(84,681)	(71,750)
Securities loaned	(5,357)	(2,647)
Other secured financings	(23,956)	(20,516)
Unsecured borrowings Short-term	(12,310)	(10,896)
Unsecured borrowings Long-term	(31,204)	(22,185)
Other liabilities and accrued expenses	(228)	(559)
Total financial liabilities at fair value	(177,670)	(139,162)
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Receivables from customers and counterparties	4	55
Total financial assets at fair value	4	55
Deposits	(2,968)	(3,173)
Securities sold under agreements to repurchase	(37)	(66)
Other secured financings	(389)	(557)
Unsecured borrowings Short-term	(4,594)	(3,896)
Unsecured borrowings Long-term	(7,434)	(7,225)
Other liabilities and accrued expenses	(40)	(62)
Total financial liabilities at fair value	$ (15,462)	$ (14,979)

Fair Value Option - Additional

Fair Value Option - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Fair Value [Line Items]
Fair value of unfunded commitments for which the fair value option was elected	$ 31	$ 80
Total contractual amount of unfunded commitments for which the fair value option was elected	9,940	7,190
Net Gains (Losses) Attributable to the Impact of Changes in Instrument-Specific Credit Spreads on Loans and Lending Commitments For Which the Fair Value Option Was Elected	268	281	$ 751
Long-term Other Secured Financings At Fair Value [Member]
Fair Value [Line Items]
Difference between aggregate contractual principal amount of long-term debt instruments for which the fair value option was elected and related fair value		361
Unsecured Long-Term Borrowings at Fair Value [Member]
Fair Value [Line Items]
Difference between aggregate contractual principal amount of long-term debt instruments for which the fair value option was elected and related fair value	$ 1,690	$ 1,560
Minimum [Member] | Other Secured Financings at Fair Value [Member]
Fair Value [Line Items]
Fair Value Unobservable Inputs, Yield	0.60%	0.40%
Fair Value Unobservable Inputs, Duration	8 months 12 days	1 month 6 days
Maximum [Member] | Other Secured Financings at Fair Value [Member]
Fair Value [Line Items]
Fair Value Unobservable Inputs, Yield	13.00%	16.60%
Fair Value Unobservable Inputs, Duration	11 years	5 years 8 months 12 days
Weighted Average [Member] | Other Secured Financings at Fair Value [Member]
Fair Value [Line Items]
Fair Value Unobservable Inputs, Yield	3.30%	3.50%
Fair Value Unobservable Inputs, Duration	2 years 8 months 12 days	2 years 3 months 18 days
Other Financial Liabilities [Member]
Fair Value [Line Items]
Gains/(Losses) on liabilities	$ (1,410)	$ (106)
Realized Gains/(Losses) on liabilities	(362)	(99)
Net Unrealized Gains / (Losses)	(1,047)	(7)
Other Financial Liabilities [Member] | Debt Valuation Adjustment [Member]
Fair Value [Line Items]
Fair Value, Measured on Recurring Basis, Gains/(Losses) Included in condensed consolidated statements of comprehensive income	(149)	(75)
Other Financial Liabilities [Member] | Market making [Member]
Fair Value [Line Items]
Fair Value, Measured on Recurring Basis, Gains/(Losses) Included in condensed consolidated statements of earnings	(1,200)	(21)
Other Financial Liabilities [Member] | Other Principal Transactions [Member]
Fair Value [Line Items]
Fair Value, Measured on Recurring Basis, Gains/(Losses) Included in condensed consolidated statements of earnings	(45)
Other Financial Liabilities [Member] | Interest Expense [Member]
Fair Value [Line Items]
Fair Value, Measured on Recurring Basis, Gains/(Losses) Included in condensed consolidated statements of earnings	(10)	(10)
Other Financial Liabilities [Member] | Other Secured Financings at Fair Value [Member]
Fair Value [Line Items]
Net Unrealized Gains / (Losses)	(40)	(3)
Other Financial Liabilities [Member] | Unsecured Long-Term Borrowings at Fair Value [Member]
Fair Value [Line Items]
Net Unrealized Gains / (Losses)	$ (559)	$ 190

Fair Value Option - Level 3 Rol

Fair Value Option - Level 3 Rollforward (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Other Financial Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value, Beginning Balance	$ 55	$ 45
Net realized gains/(losses)		6
Net unrealized gains/(losses)		1
Purchases	1	10
Settlements	(52)	(7)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value, Ending Balance	4	55
Other Financial Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value, Beginning Balance	(14,979)	(11,244)
Net realized gains/(losses)	(362)	(99)
Net unrealized gains/(losses)	(1,047)	(7)
Purchases	(3)	(8)
Sales	1
Issuances	(8,382)	(10,236)
Settlements	6,859	5,983
Transfers Into Level 3	(611)	(759)
Transfers Out Of Level 3	3,062	1,391
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value, Ending Balance	(15,462)	(14,979)
Other Financial Liabilities [Member] | Deposits at Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value, Beginning Balance	(3,173)	(2,215)
Net realized gains/(losses)	(6)	(22)
Net unrealized gains/(losses)	(239)	(89)
Issuances	(661)	(993)
Settlements	232	146
Transfers Out Of Level 3	879
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value, Ending Balance	(2,968)	(3,173)
Other Financial Liabilities [Member] | Securities Sold under Agreements to Repurchase at Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value, Beginning Balance	(66)	(71)
Net unrealized gains/(losses)	(1)	(6)
Settlements	30	11
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value, Ending Balance	(37)	(66)
Other Financial Liabilities [Member] | Other Secured Financings at Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value, Beginning Balance	(557)	(549)
Net realized gains/(losses)	17	(8)
Net unrealized gains/(losses)	(40)	(3)
Purchases	(3)	(5)
Sales	1
Issuances	(32)	(150)
Settlements	171	273
Transfers Into Level 3	(12)	(117)
Transfers Out Of Level 3	66	2
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value, Ending Balance	(389)	(557)
Other Financial Liabilities [Member] | Unsecured Short-Term Borrowings Including Current Portion of Unsecured Long-Term Borrowings at Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value, Beginning Balance	(3,896)	(4,133)
Net realized gains/(losses)	(332)	(57)
Net unrealized gains/(losses)	(230)	(115)
Issuances	(4,599)	(3,837)
Settlements	3,675	3,492
Transfers Into Level 3	(131)	(370)
Transfers Out Of Level 3	919	1,124
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value, Ending Balance	(4,594)	(3,896)
Other Financial Liabilities [Member] | Unsecured Long-Term Borrowings at Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value, Beginning Balance	(7,225)	(4,224)
Net realized gains/(losses)	(60)	(27)
Net unrealized gains/(losses)	(559)	190
Purchases		(3)
Issuances	(3,071)	(5,201)
Settlements	2,751	2,047
Transfers Into Level 3	(468)	(272)
Transfers Out Of Level 3	1,198	265
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value, Ending Balance	(7,434)	(7,225)
Other Financial Liabilities [Member] | Other Liabilities and Accrued Expenses at Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value, Beginning Balance	(62)	(52)
Net realized gains/(losses)	19	15
Net unrealized gains/(losses)	22	16
Issuances	(19)	(55)
Settlements		14
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value, Ending Balance	$ (40)	$ (62)

Fair Value Option - Gains and L

Fair Value Option - Gains and Losses on Other Financial Assets and Financial Liabilities at Fair Value (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value Option Gains/(Losses)	$ (4,340)	$ (1,129)	$ 216
Unsecured Short-Term Borrowings Including Current Portion of Unsecured Long-Term Borrowings at Fair Value [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value Option Gains/(Losses)	(2,585)	(1,028)	346
Unsecured Long-Term Borrowings at Fair Value [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value Option Gains/(Losses)	(1,357)	584	771
Other Liabilities and Accrued Expenses at Fair Value [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value Option Gains/(Losses)	222	(55)	(684)
Fair Value Option Other [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair Value Option Gains/(Losses)	$ (620)	$ (630)	$ (217)

Fair Value Option - Loans and L

Fair Value Option - Loans and Lending Commitments (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Aggregate contractual principal amount of performing loans and long-term receivables in excess of fair value	$ 952	$ 478
Aggregate contractual principal amount of loans on non-accrual status and/or more than 90 days past due in excess of fair value (excluding loans carried at zero fair value and considered uncollectible)	5,266	8,101
Aggregate fair value of loans on non-accrual status and/or more than 90 days past due	$ 2,104	$ 2,138

Fair Value Option - Summary of

Fair Value Option - Summary of DVA Losses on Financial Liabilities (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Option, Quantitative Disclosures [Line Items]
DVA (net of tax)	$ (807)	$ (544)
Other Financial Liabilities [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
DVA (pre-tax)	(1,232)	(844)
DVA (net of tax)	$ (807)	$ (544)

Loans Receivable - Summary of L

Loans Receivable - Summary of Loans Receivable (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Loans Receivable [Line Items]
Subtotal	$ 66,736	$ 50,181
Allowance for loan losses	(803)	(509)	$ (414)
Total loans receivable	65,933	49,672
Corporate Loans [Member]
Loans Receivable [Line Items]
Subtotal	30,749	24,837
Loans to PWM clients [Member]
Loans Receivable [Line Items]
Subtotal	16,591	13,828
Loans Backed by Commercial Real Estate [Member]
Loans Receivable [Line Items]
Subtotal	7,987	4,761
Loans Backed by Residential Real Estate [Member]
Loans Receivable [Line Items]
Subtotal	6,234	3,865
Marcus Loans [Member]
Loans Receivable [Line Items]
Subtotal	1,912	208
Other Loans [Member]
Loans Receivable [Line Items]
Subtotal	$ 3,263	$ 2,682

Loans Receivable - Additional I

Loans Receivable - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Loans Receivable [Line Items]
Estimated fair Value of loans receivable	$ 66,290	$ 49,800
Carrying value of lending commitments liabilities	423	327
Lending commitments liabilities, allowance for losses	274	212	$ 188
Estimated fair value of lending commitments liabilities	2,270	2,550
PCI and Marcus loans	6,370	4,180
Impaired loans receivable (excluding PCI loans) on non-accrual status	845	404
Corporate loans modified in a troubled debt restructuring	61	142
Lending commitments related to loans modified in a troubled debt restructuring	0	144
Impaired loans and lending commitments	$ 492	$ 122
Americas [Member]
Loans Receivable [Line Items]
Regional composition of loans	79.00%	78.00%
Europe, Middle East and Africa [Member]
Loans Receivable [Line Items]
Regional composition of loans	17.00%	18.00%
Asia [Member]
Loans Receivable [Line Items]
Regional composition of loans	4.00%	4.00%
Level 2 [Member]
Loans Receivable [Line Items]
Estimated fair Value of loans receivable	$ 38,750	$ 28,400
Estimated fair value of lending commitments liabilities	772	1,100
Level 3 [Member]
Loans Receivable [Line Items]
Estimated fair Value of loans receivable	27,540	21,400
Estimated fair value of lending commitments liabilities	$ 1,500	$ 1,450

Loans Receivable - Lending Comm

Loans Receivable - Lending Commitments Held for Investments and Accounted for on Accrual Basis (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Loans Receivable [Line Items]
Lending commitments held for investment	$ 124,504	$ 98,045
Corporate Loans [Member]
Loans Receivable [Line Items]
Lending commitments held for investment	118,553	93,407
Other Loans [Member]
Loans Receivable [Line Items]
Lending commitments held for investment	$ 5,951	$ 4,638

Loans Receivable - Summary of P

Loans Receivable - Summary of Purchased Credit Impaired (PCI) Loans (Detail) - PCI Loans [Member] - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Loans Receivable [Line Items]
Total gross carrying value of PCI loans	$ 4,453	$ 3,970
Total outstanding principal balance of PCI loans	9,512	8,515
Total accretable yield of PCI loans	662	526
Fair value of PCI loans at the time of acquisition	1,769	2,514	$ 2,267
Expected cash flows of PCI loans at the time of acquisition	1,961	2,818	2,499
Contractually required cash flows of PCI loans at the time of acquisition	4,092	6,389	$ 6,472
Loans Backed by Commercial Real Estate [Member]
Loans Receivable [Line Items]
Total gross carrying value of PCI loans	1,116	1,444
Loans Backed by Residential Real Estate [Member]
Loans Receivable [Line Items]
Total gross carrying value of PCI loans	3,327	2,508
Other Loans [Member]
Loans Receivable [Line Items]
Total gross carrying value of PCI loans	$ 10	$ 18

Loans Receivable - Summary o100

Loans Receivable - Summary of Loans Receivable - Credit Rating Equivalent (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 66,736	$ 50,181
Lending Commitments	124,504	98,045
Loans Receivable And Related Lending Commitments [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	60,371	46,003
Lending Commitments	124,504	98,045
Total	184,875	144,048
Loans Receivable And Related Lending Commitments [Member] | Investment-Grade [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	24,192	18,434
Lending Commitments	89,409	72,323
Total	113,601	90,757
Loans Receivable And Related Lending Commitments [Member] | Non-Investment-Grade [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	36,179	27,569
Lending Commitments	35,095	25,722
Total	$ 71,274	$ 53,291

Loans Receivable - Summary o101

Loans Receivable - Summary of Loans Receivable - Regulatory Risk Rating (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 66,736	$ 50,181
Lending Commitments	124,504	98,045
Loans Receivable And Related Lending Commitments [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	60,371	46,003
Lending Commitments	124,504	98,045
Total	184,875	144,048
Non-Criticized/Pass [Member] | Loans Receivable And Related Lending Commitments [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	56,720	42,938
Lending Commitments	119,427	94,966
Total	176,147	137,904
Criticized [Member] | Loans Receivable And Related Lending Commitments [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	3,651	3,065
Lending Commitments	5,077	3,079
Total	$ 8,728	$ 6,144

Loans Receivable - Gross Loans

Loans Receivable - Gross Loans Receivable and Lending Commitments by Impairment Methodology (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Loans Receivable
Specific	$ 845	$ 404
Portfolio	61,438	45,807
Total	66,736	50,181
Lending Commitments
Specific	53	211
Portfolio	124,451	97,834
Total	124,504	98,045
Corporate Loans [Member]
Loans Receivable
Specific	377	327
Portfolio	30,372	24,510
Total	30,749	24,837
Lending Commitments
Specific	53	211
Portfolio	118,500	93,196
Total	118,553	93,407
Loans to PWM clients [Member]
Loans Receivable
Specific	163	77
Portfolio	16,428	13,751
Total	16,591	13,828
Loans Backed by Commercial Real Estate [Member]
Loans Receivable
Portfolio	6,871	3,317
Total	7,987	4,761
Loans Backed by Residential Real Estate [Member]
Loans Receivable
Specific	231
Portfolio	2,676	1,357
Total	6,234	3,865
Marcus Loans [Member]
Loans Receivable
Portfolio	1,912	208
Total	1,912	208
Other Loans [Member]
Loans Receivable
Specific	74
Portfolio	3,179	2,664
Total	3,263	2,682
Lending Commitments
Portfolio	5,951	4,638
Total	5,951	4,638
PCI Loans [Member]
Loans Receivable
PCI	4,453	3,970
PCI Loans [Member] | Loans Backed by Commercial Real Estate [Member]
Loans Receivable
PCI	1,116	1,444
PCI Loans [Member] | Loans Backed by Residential Real Estate [Member]
Loans Receivable
PCI	3,327	2,508
PCI Loans [Member] | Other Loans [Member]
Loans Receivable
PCI	$ 10	$ 18

Loans Receivable - Summary of C

Loans Receivable - Summary of Changes in Allowance for Loan Losses and Allowance for Losses on Lending Commitments (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Changes in the allowance for losses
Balance, beginning of period	$ 509	$ 414
Charge-offs	(203)	(8)
Provision	574	138
Other	(77)	(35)
Balance, end of period	803	509
Specific	119	127
Portfolio	518	370
PCI	166	12
Balance, end of period	803	509
Changes in the allowance for losses on lending commitments
Balance, beginning of period	212	188
Provision	83	44
Other	(21)	(20)
Balance, end of period	274	212
Specific	14	39
Portfolio	260	173
Balance, end of period	$ 274	$ 212

Collateralized Agreements an104

Collateralized Agreements and Financings - Resale and Repurchase Agreements and Securities Borrowed and Loaned Transactions (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Collateralized Agreements And Financings [Abstract]
Securities purchased under agreements to resell (includes $120,420 and $116,077 at fair value)	$ 120,822	$ 116,925
Securities borrowed (includes $78,189 and $82,398 at fair value)	190,848	184,600
Securities sold under agreements to repurchase	84,718	71,816
Securities loaned (includes $5,357 and $2,647 at fair value)	$ 14,793	$ 7,524

Collateralized Agreements an105

Collateralized Agreements and Financings - Resale and Repurchase Agreements and Securities Borrowed and Loaned Transactions (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Collateralized Agreements And Financings [Abstract]
Securities borrowed at fair value	$ 78,189	$ 82,398
Securities loaned at fair value	$ 5,357	$ 2,647

Collateralized Agreements an106

Collateralized Agreements and Financings - Offsetting Arrangements (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Collateralized Agreements And Financings [Abstract]
Resale agreements, Gross carrying value	$ 209,972	$ 173,561
Resale agreements, Counterparty Netting	(89,150)	(56,636)
Resale agreements	120,822	116,925
Resale agreements, Counterparty Netting	(5,441)	(8,319)
Resale agreements, Collateral	(113,305)	(107,148)
Resale agreements	2,076	1,458
Securities borrowed, Gross carrying value	195,783	189,571
Securities borrowed, Counterparty Netting	(4,935)	(4,971)
Securities borrowed	190,848	184,600
Securities borrowed, Counterparty Netting	(4,412)	(4,045)
Securities borrowed, Collateral	(177,679)	(170,625)
Securities borrowed	8,757	9,930
Repurchase agreements, Gross carrying value	173,868	128,452
Repurchase agreements, Counterparty Netting	(89,150)	(56,636)
Repurchase agreements	84,718	71,816
Repurchase agreements, Counterparty Netting	(5,441)	(8,319)
Repurchase agreements, Collateral	(76,793)	(62,081)
Repurchase agreements	2,484	1,416
Securities loaned, Gross carrying value	19,728	12,495
Securities loaned, Counterparty Netting	(4,935)	(4,971)
Securities loaned	14,793	7,524
Securities loaned, Counterparty Netting	(4,412)	(4,045)
Securities loaned, Collateral	(9,731)	(3,087)
Securities loaned	$ 650	$ 392

Collateralized Agreements an107

Collateralized Agreements and Financings - Schedule of Gross Carrying Value of Repurchase Agreements and Securities Loaned (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Offsetting Liabilities [Line Items]
Repurchase agreements	$ 173,868	$ 128,452
Securities loaned	19,728	12,495
Money Market Instruments [Member]
Offsetting Liabilities [Line Items]
Repurchase agreements	97	317
U.S. Government and Agency Obligations [Member]
Offsetting Liabilities [Line Items]
Repurchase agreements	80,591	47,207
Securities loaned		115
Non-U.S. Government and Agency Obligations [Member]
Offsetting Liabilities [Line Items]
Repurchase agreements	73,031	56,156
Securities loaned	2,245	1,846
Securities Backed By Commercial Real Estate [Member]
Offsetting Liabilities [Line Items]
Repurchase agreements	43	208
Securities Backed By Residential Real Estate [Member]
Offsetting Liabilities [Line Items]
Repurchase agreements	338	122
Corporate Loans and Debt Securities [Member]
Offsetting Liabilities [Line Items]
Repurchase agreements	7,140	8,297
Securities loaned	1,145	39
State and Municipal Obligations [Member]
Offsetting Liabilities [Line Items]
Repurchase agreements		831
Other Debt Obligations [Member]
Offsetting Liabilities [Line Items]
Repurchase agreements	55	286
Equity Securities [Member]
Offsetting Liabilities [Line Items]
Repurchase agreements	12,573	15,028
Securities loaned	$ 16,338	$ 10,495

Collateralized Agreements an108

Collateralized Agreements and Financings - Schedule of Repurchase Agreements and Securities Loaned (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Offsetting Liabilities [Line Items]
Repurchase agreements	$ 173,868	$ 128,452
Securities loaned	19,728	$ 12,495
No Stated Maturity and Overnight [Member]
Offsetting Liabilities [Line Items]
Repurchase agreements	65,280
Securities loaned	9,389
2 - 30 Days [Member]
Offsetting Liabilities [Line Items]
Repurchase agreements	59,344
Securities loaned	4,967
31 - 90 Days [Member]
Offsetting Liabilities [Line Items]
Repurchase agreements	13,489
Securities loaned	756
91 Days - 1 Year [Member]
Offsetting Liabilities [Line Items]
Repurchase agreements	21,392
Securities loaned	2,302
Greater than 1 Year [Member]
Offsetting Liabilities [Line Items]
Repurchase agreements	14,363
Securities loaned	$ 2,314

Collateralized Agreements an109

Collateralized Agreements and Financings - Other Secured Financings (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Other Secured Financings [Line Items]
Other Secured Financings Short Term At Fair Value	$ 14,560	$ 13,118
Other Secured Financings Short Term At Amortized Cost	336
Other Secured Financings Long Term At Fair Value	9,785	7,955
Other Secured Financings Long Term At Amortized Cost	107	450
Other secured financings	24,788	21,523
Other secured financings collateralized by financial instruments	22,324	19,832
Other secured financings collateralized by other assets	2,464	1,691
U.S. Dollar [Member]
Other Secured Financings [Line Items]
Other Secured Financings Short Term At Fair Value	7,704	9,380
Other Secured Financings Long Term At Fair Value	6,779	5,562
Other Secured Financings Long Term At Amortized Cost	$ 107	$ 145
Weighted average interest rate, after giving effect to hedging activities, on other secured financings at amortized cost (long-term)	3.89%	4.06%
Other secured financings	$ 14,590	$ 15,087
Other secured financings collateralized by financial instruments	12,454	13,858
Other secured financings collateralized by other assets	2,136	1,229
Non-U.S. Dollar [Member]
Other Secured Financings [Line Items]
Other Secured Financings Short Term At Fair Value	6,856	3,738
Other Secured Financings Short Term At Amortized Cost	$ 336
Weighted average interest rate, after giving effect to hedging activities, on other secured financings at amortized cost (short-term)	2.61%
Other Secured Financings Long Term At Fair Value	$ 3,006	2,393
Other Secured Financings Long Term At Amortized Cost		$ 305
Weighted average interest rate, after giving effect to hedging activities, on other secured financings at amortized cost (long-term)		2.16%
Other secured financings	10,198	$ 6,436
Other secured financings collateralized by financial instruments	9,870	5,974
Other secured financings collateralized by other assets	$ 328	$ 462

Collateralized Agreements an110

Collateralized Agreements and Financings - Other Secured Financings (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Collateralized Agreements And Financings [Abstract]
Nonrecourse obligations included in other secured financings	$ 5,310	$ 2,540
Transfers of financial assets accounted for as financings included in other secured financings	1,550	285
Financial assets collateralizing other secured financings related to failed sales	1,570	285
Other secured financings collateralized by financial instruments owned	16,610	13,650
Other secured financings collateralized by financial instruments received as collateral and repledged	$ 5,710	$ 6,180

Collateralized Agreements an111

Collateralized Agreements and Financings - Other Secured Financings by Maturity Date (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Other Secured Financings By Maturity Period [Line Items]
Other secured financings (short-term)	$ 14,896	$ 13,118
Total other secured financings (long-term)	9,892	8,405
Total other secured financings	24,788	$ 21,523
Other secured financings (long-term) [Member]
Other Secured Financings By Maturity Period [Line Items]
2,019	3,439
2,020	1,555
2,021	551
2,022	2,468
2023 - thereafter	$ 1,879

Collateralized Agreements an112

Collateralized Agreements and Financings - Financial Instruments Received as Collateral and Repledged (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Collateralized Agreements And Financings [Abstract]
Financial instruments at fair value received as collateral by the firm that it was permitted to deliver or repledge	$ 763,984	$ 634,609
Financial instruments at fair value received as collateral which the firm delivered or repledged	$ 599,565	$ 495,717

Collateralized Agreements an113

Collateralized Agreements and Financings - Financial Instruments Received as Collateral and Repledged (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Collateralized Agreements And Financings [Abstract]
Securities received under resale agreements and securities borrowed transactions segregated to satisfy certain regulatory requirements	$ 1,520	$ 15,470
Securities segregated for regulatory and other purposes	$ 10,420	$ 15,290

Collateralized Agreements an114

Collateralized Agreements and Financings - Financial Instruments Owned and Other Assets Pledged as Collateral (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Collateralized Agreements And Financings [Abstract]
Financial instruments owned pledged in connection with repurchase agreements, securities lending agreements and other secured financings to counterparties that had the right to deliver or repledge	$ 50,335	$ 51,278
Financial instruments owned pledged in connection with repurchase agreements, securities lending agreements and other secured financings to counterparties that did not have right to deliver or repledge	78,656	61,099
Other assets (substantially all real estate and cash) owned and pledged in connection with other secured financings to counterparties that did not have the right to deliver or repledge	$ 4,838	$ 3,287

Securitization Activities - Amo

Securitization Activities - Amount of Financial Assets Securitized and Cash Flows Received on Retained Interests (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Transfers and Servicing of Financial Assets [Abstract]
Securitization of residential mortgages	$ 18,142	$ 12,164	$ 10,479
Securitization of commercial mortgages	7,872	233	6,043
Securitization of other financial assets	481	181
Securitization of Financial Assets	26,495	12,578	16,522
Retained interests cash flows	$ 264	$ 189	$ 174

Securitization Activities - Fir

Securitization Activities - Firms Continuing Involvement in Securitization Entities to Which Firm Sold Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Outstanding principal amount	$ 40,814	$ 31,042
Retained interests	2,115	1,564
Purchased interests	41	36
U.S. Government Agency-Issued Collateralized Mortgage Obligations [Member]
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Outstanding principal amount	20,232	25,140
Retained interests	1,120	953
Purchased interests	16	24
Other Residential Mortgage-backed [Member]
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Outstanding principal amount	10,558	3,261
Retained interests	711	540
Purchased interests	17	6
Other Commercial Mortgage-backed [Member]
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Outstanding principal amount	7,916	357
Retained interests	228	15
Purchased interests	7
Corporate debt and other asset-backed [Member]
Qualitative and Quantitative Information, Transferor's Continuing Involvement [Line Items]
Outstanding principal amount	2,108	2,284
Retained interests	56	56
Purchased interests	$ 1	$ 6

Securitization Activities - 117

Securitization Activities - Firms Continuing Involvement in Securitization Entities to Which Firm Sold Assets (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Transfers and Servicing of Financial Assets [Abstract]
Fair Value of Retained Interests	$ 2,130	$ 1,580

Securitization Activities - Add

Securitization Activities - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Net Asset related to Other Continuing Involvement	$ 86	$ 48
Fair Value of Retained Interests	2,130	1,580
Other Retained Interests [Member]
Fair Value of Retained Interests	$ 56	$ 56
Weighted average life (years)	4 years 6 months	3 years 6 months
Maximum Exposure to Adverse Changes in the value of retained interests relating to Other securities	$ 56	$ 56

Securitization Activities - Wei

Securitization Activities - Weighted Average Key Economic Assumptions Used in Measuring Fair Value of Firm's Retained Interests and Sensitivity of This Fair Value to Immediate Adverse Changes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]
Fair Value of Retained Interests	$ 2,130	$ 1,580
Mortgage-Backed [Member]
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]
Fair Value of Retained Interests	$ 2,071	$ 1,519
Weighted average life (years)	6 years	7 years 6 months
Constant prepayment rate	9.40%	8.10%
Impact of 10% adverse change	$ (19)	$ (14)
Impact of 20% adverse change	$ (35)	$ (28)
Discount rate	4.20%	5.30%
Impact of 10% adverse change	$ (35)	$ (37)
Impact of 20% adverse change	$ (70)	$ (71)

Variable Interest Entities (Non

Variable Interest Entities (Nonconsolidated Variable Interest Entities) - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2016
Variable Interest Entity [Line Items]
Assets in VIEs	$ 97,962	$ 70,083
Carrying Value of the Firm's Variable Interests in Nonconsolidated VIEs - Assets	8,425	6,199
Maximum Exposure to Loss in Nonconsolidated VIEs	19,609	15,208
Investment In Funds [Member]
Variable Interest Entity [Line Items]
Assets in VIEs	11,019	14,058
Carrying Value of the Firm's Variable Interests in Nonconsolidated VIEs - Assets	348	750
Maximum Exposure to Loss in Nonconsolidated VIEs	$ 407	$ 824
Accounting Standards Update 2015-02 [Member] | Investment In Funds [Member]
Variable Interest Entity [Line Items]
Assets in VIEs			$ 10,700
Carrying Value of the Firm's Variable Interests in Nonconsolidated VIEs - Assets			543
Maximum Exposure to Loss in Nonconsolidated VIEs			$ 559

Variable Interest Entities (Con

Variable Interest Entities (Consolidated Variable Interest Entities) - Additional Information (Detail) - Real Estate, Credit-Related and Other Investing [Member] - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2016
Variable Interest Entity [Line Items]
Assets	$ 2,813	$ 3,291
Liabilities	$ 919	$ 1,095
Accounting Standards Update 2015-02 [Member]
Variable Interest Entity [Line Items]
Assets			$ 302
Liabilities			$ 122

Variable Interest Entities - No

Variable Interest Entities - Nonconsolidated Variable Interest Entities (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Variable Interest Entity [Line Items]
Assets in VIE	$ 97,962	$ 70,083
Carrying Value of the Firm's Variable Interests in Nonconsolidated VIEs - Assets	8,425	6,199
Carrying Value of the Firm's Variable Interests in Nonconsolidated VIEs - Liabilities	214	254
Maximum Exposure to Loss in Nonconsolidated VIEs	19,609	15,208
Retained Interests, Maximum Exposure to Loss [Member]
Variable Interest Entity [Line Items]
Maximum Exposure to Loss in Nonconsolidated VIEs	2,115	1,564
Purchased Interests, Maximum Exposure to Loss [Member]
Variable Interest Entity [Line Items]
Maximum Exposure to Loss in Nonconsolidated VIEs	1,172	544
Commitments and Guarantees, Maximum Exposure to Loss [Member]
Variable Interest Entity [Line Items]
Maximum Exposure to Loss in Nonconsolidated VIEs	3,462	2,196
Derivatives, Maximum Exposure to Loss [Member]
Variable Interest Entity [Line Items]
Maximum Exposure to Loss in Nonconsolidated VIEs	8,406	7,144
Loans and Investments, Maximum Exposure to Loss [Member]
Variable Interest Entity [Line Items]
Maximum Exposure to Loss in Nonconsolidated VIEs	4,454	3,760
Mortgage-Backed [Member]
Variable Interest Entity [Line Items]
Assets in VIE	55,153	32,714
Carrying Value of the Firm's Variable Interests in Nonconsolidated VIEs - Assets	3,128	1,936
Maximum Exposure to Loss in Nonconsolidated VIEs	3,236	2,109
Mortgage-Backed [Member] | Retained Interests, Maximum Exposure to Loss [Member]
Variable Interest Entity [Line Items]
Maximum Exposure to Loss in Nonconsolidated VIEs	2,059	1,508
Mortgage-Backed [Member] | Purchased Interests, Maximum Exposure to Loss [Member]
Variable Interest Entity [Line Items]
Maximum Exposure to Loss in Nonconsolidated VIEs	1,067	429
Mortgage-Backed [Member] | Commitments and Guarantees, Maximum Exposure to Loss [Member]
Variable Interest Entity [Line Items]
Maximum Exposure to Loss in Nonconsolidated VIEs	11	9
Mortgage-Backed [Member] | Derivatives, Maximum Exposure to Loss [Member]
Variable Interest Entity [Line Items]
Maximum Exposure to Loss in Nonconsolidated VIEs	99	163
Corporate debt and other asset-backed [Member]
Variable Interest Entity [Line Items]
Assets in VIE	16,251	11,540
Carrying Value of the Firm's Variable Interests in Nonconsolidated VIEs - Assets	1,660	602
Carrying Value of the Firm's Variable Interests in Nonconsolidated VIEs - Liabilities	212	245
Maximum Exposure to Loss in Nonconsolidated VIEs	11,060	7,706
Corporate debt and other asset-backed [Member] | Retained Interests, Maximum Exposure to Loss [Member]
Variable Interest Entity [Line Items]
Maximum Exposure to Loss in Nonconsolidated VIEs	56	56
Corporate debt and other asset-backed [Member] | Purchased Interests, Maximum Exposure to Loss [Member]
Variable Interest Entity [Line Items]
Maximum Exposure to Loss in Nonconsolidated VIEs	105	115
Corporate debt and other asset-backed [Member] | Commitments and Guarantees, Maximum Exposure to Loss [Member]
Variable Interest Entity [Line Items]
Maximum Exposure to Loss in Nonconsolidated VIEs	1,779	461
Corporate debt and other asset-backed [Member] | Derivatives, Maximum Exposure to Loss [Member]
Variable Interest Entity [Line Items]
Maximum Exposure to Loss in Nonconsolidated VIEs	8,303	6,975
Corporate debt and other asset-backed [Member] | Loans and Investments, Maximum Exposure to Loss [Member]
Variable Interest Entity [Line Items]
Maximum Exposure to Loss in Nonconsolidated VIEs	817	99
Real estate, credit- and power-related and other investing [Member]
Variable Interest Entity [Line Items]
Assets in VIE	15,539	11,771
Carrying Value of the Firm's Variable Interests in Nonconsolidated VIEs - Assets	3,289	2,911
Carrying Value of the Firm's Variable Interests in Nonconsolidated VIEs - Liabilities	2	9
Maximum Exposure to Loss in Nonconsolidated VIEs	4,906	4,569
Real estate, credit- and power-related and other investing [Member] | Commitments and Guarantees, Maximum Exposure to Loss [Member]
Variable Interest Entity [Line Items]
Maximum Exposure to Loss in Nonconsolidated VIEs	1,617	1,658
Real estate, credit- and power-related and other investing [Member] | Loans and Investments, Maximum Exposure to Loss [Member]
Variable Interest Entity [Line Items]
Maximum Exposure to Loss in Nonconsolidated VIEs	3,289	2,911
Investment In Funds [Member]
Variable Interest Entity [Line Items]
Assets in VIE	11,019	14,058
Carrying Value of the Firm's Variable Interests in Nonconsolidated VIEs - Assets	348	750
Maximum Exposure to Loss in Nonconsolidated VIEs	407	824
Investment In Funds [Member] | Commitments and Guarantees, Maximum Exposure to Loss [Member]
Variable Interest Entity [Line Items]
Maximum Exposure to Loss in Nonconsolidated VIEs	55	68
Investment In Funds [Member] | Derivatives, Maximum Exposure to Loss [Member]
Variable Interest Entity [Line Items]
Maximum Exposure to Loss in Nonconsolidated VIEs	4	6
Investment In Funds [Member] | Loans and Investments, Maximum Exposure to Loss [Member]
Variable Interest Entity [Line Items]
Maximum Exposure to Loss in Nonconsolidated VIEs	$ 348	$ 750

Variable Interest Entities -123

Variable Interest Entities - Nonconsolidated Variable Interest Entities (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Variable Interest Entities [Abstract]
Commitments and guarantees and derivative transactions with VIEs to which the firm transferred assets	$ 1,260	$ 1,280

Variable Interest Entities - Co

Variable Interest Entities - Consolidated Variable Interest Entities (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Assets
Cash and cash equivalents	$ 110,051	$ 121,711	$ 93,439	$ 75,025
Loans receivable	65,933	49,672
Financial instruments owned	315,988	295,952
Other assets	28,346	25,481
Liabilities
Other secured financings	24,788	21,523
Payables to brokers, dealers and clearing organizations	6,672	4,386
Financial instruments sold, but not yet purchased	111,930	117,143
Unsecured short-term borrowings	46,922	39,265
Unsecured long-term borrowings	217,687	189,086
Other liabilities and accrued expenses	16,922	14,362
Real Estate, Credit-Related and Other Investing [Member]
Assets
Cash and cash equivalents	275	300
Loans receivable	375	603
Financial instruments owned	896	1,708
Other assets	1,267	680
Total	2,813	3,291
Liabilities
Other secured financings	327	284
Payables to brokers, dealers and clearing organizations		1
Financial instruments sold, but not yet purchased	15	7
Other liabilities and accrued expenses	577	803
Total	919	1,095
Mortgage-Backed and Other Asset-Backed [Member]
Assets
Receivables from customers and counterparties	2
Loans receivable	52
Financial instruments owned	242	253
Other assets	6	2
Total	302	255
Liabilities
Other secured financings	207	139
Total	207	139
Principal-Protected Notes [Member]
Assets
Financial instruments owned	56	86
Total	56	86
Liabilities
Other secured financings	489	431
Unsecured short-term borrowings	79	197
Unsecured long-term borrowings	225	334
Total	793	962
Consolidated Variable Interest Entity, Total Carrying Amount [Member]
Assets
Cash and cash equivalents	275	300
Receivables from customers and counterparties	2
Loans receivable	427	603
Financial instruments owned	1,194	2,047
Other assets	1,273	682
Total	3,171	3,632
Liabilities
Other secured financings	1,023	854
Payables to brokers, dealers and clearing organizations		1
Financial instruments sold, but not yet purchased	15	7
Unsecured short-term borrowings	79	197
Unsecured long-term borrowings	225	334
Other liabilities and accrued expenses	577	803
Total	$ 1,919	$ 2,196

Other Assets - Other Assets (De

Other Assets - Other Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Other Assets [Abstract]
Property, leasehold improvements and equipment	$ 15,094	$ 12,070
Goodwill and identifiable intangible assets	4,038	4,095
Income tax-related assets	3,728	5,550
Miscellaneous receivables and other	5,486	3,766
Total	$ 28,346	$ 25,481

Other Assets - Other Assets (Pa

Other Assets - Other Assets (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Schedule Of Other Assets [Line Items]
Accumulated depreciation and amortization	$ 8,280	$ 7,680
Property, leasehold improvements and equipment used for operation	$ 5,970	$ 5,960
Amortization period - Capitalized costs of software developed or obtained for internal use	3 years	3 years
Debt securities accounted for as held-to-maturity	$ 800	$ 87
Investments in qualified affordable housing projects	679	682
Equity-method investments	275	$ 219
Investing and Lending [Member]
Schedule Of Other Assets [Line Items]
Assets classified as held for sale	$ 634

Other Assets - Goodwill and Int

Other Assets - Goodwill and Intangible Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Schedule Of Intangible Assets And Goodwill [Line Items]
Goodwill	$ 3,665	$ 3,666
Identifiable Intangible Assets	373	429
Investment Banking - Financial Advisory [Member]
Schedule Of Intangible Assets And Goodwill [Line Items]
Goodwill	98	98
Investment Banking - Underwriting [Member]
Schedule Of Intangible Assets And Goodwill [Line Items]
Goodwill	183	183
Institutional Client Services - Fixed Income, Currency and Commodities Client Execution [Member]
Schedule Of Intangible Assets And Goodwill [Line Items]
Goodwill	269	269
Identifiable Intangible Assets	37	65
Institutional Client Services - Equities Client Execution [Member]
Schedule Of Intangible Assets And Goodwill [Line Items]
Goodwill	2,403	2,403
Identifiable Intangible Assets	88	141
Institutional Client Services - Securities Services [Member]
Schedule Of Intangible Assets And Goodwill [Line Items]
Goodwill	105	105
Investing and Lending [Member]
Schedule Of Intangible Assets And Goodwill [Line Items]
Goodwill	2	2
Identifiable Intangible Assets	140	105
Investment Management [Member]
Schedule Of Intangible Assets And Goodwill [Line Items]
Goodwill	605	606
Identifiable Intangible Assets	$ 108	$ 118

Other Assets - Intangible Asset

Other Assets - Intangible Assets Disclosure (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	$ 1,675	$ 1,608
Accumulated amortization	(1,302)	(1,179)
Net carrying value	373	429
Customer Lists [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	1,091	1,065
Accumulated amortization	(903)	(837)
Net carrying value	188	228
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	584	543
Accumulated amortization	(399)	(342)
Net carrying value	$ 185	$ 201

Other Assets - Intangible As129

Other Assets - Intangible Assets Disclosure - Additional Information (Detail) - Other [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Identifiable intangible assets	$ 113	$ 89
Identifiable intangible assets approximate weighted average remaining life in years	5 years	3 years

Other Assets - Amortization Exp

Other Assets - Amortization Expense (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization related to identifiable intangible assets	$ 150	$ 162	$ 132

Other Assets - Estimated Future

Other Assets - Estimated Future Amortization for Existing Identifiable Intangible Assets Through 2022 (Detail) $ in Millions	Dec. 31, 2017USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2,018	$ 133
2,019	98
2,020	39
2,021	27
2,022	$ 20

Deposits - Types and Sources of

Deposits - Types and Sources of the Firm's Deposits (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Deposits [Line Items]
Savings and demand	$ 80,386	$ 77,197
Time	58,218	46,901
Total	138,604	124,098
Private Bank Deposits [Member]
Deposits [Line Items]
Savings and demand	50,579	50,655
Time	1,623	3,100
Total	52,202	53,755
Marcus Deposits [Member]
Deposits [Line Items]
Savings and demand	13,787	10,511
Time	3,330	1,337
Total	17,117	11,848
Brokered Certificates Of Deposit [Member]
Deposits [Line Items]
Time	35,704	34,905
Total	35,704	34,905
Deposit Sweep Programs [Member]
Deposits [Line Items]
Savings and demand	16,019	16,019
Total	16,019	16,019
Institutional [Member]
Deposits [Line Items]
Savings and demand	1	12
Time	17,561	7,559
Total	$ 17,562	$ 7,571

Deposits - Types and Sources133

Deposits - Types and Sources of the Firm's Deposits (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Deposits [Abstract]
Deposits at fair value	$ 22,902	$ 13,782
Weighted average maturity of time deposits	2 years	2 years 6 months
Deposits insured by the FDIC	$ 75,020	$ 69,910

Deposits - Deposits (Detail)

Deposits - Deposits (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Deposits [Abstract]
U.S. offices	$ 111,002	$ 106,037
Non-U.S. offices	27,602	18,061
Total	$ 138,604	$ 124,098

Deposits - Maturities of Time D

Deposits - Maturities of Time Deposits (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Time Deposits By Maturity [Line Items]
2,018	$ 28,143
2,019	10,476
2,020	5,154
2,021	3,617
2,022	4,993
2023 - thereafter	5,835
Total	58,218	$ 46,901
U.S. [Member]
Time Deposits By Maturity [Line Items]
2,018	13,106
2,019	7,297
2,020	5,142
2,021	3,574
2,022	4,907
2023 - thereafter	5,289
Total	39,315
Non-U.S. [Member]
Time Deposits By Maturity [Line Items]
2,018	15,037
2,019	3,179
2,020	12
2,021	43
2,022	86
2023 - thereafter	546
Total	$ 18,903

Deposits - Maturities of Tim136

Deposits - Maturities of Time Deposits (Parenthetical) (Detail) $ in Millions	Dec. 31, 2017USD ($)
Deposits [Abstract]
Total domestic time deposits greater than $250,000	$ 1,430
Total foreign time deposits greater than $250,000	$ 11,660

Short-Term Borrowings - Short-T

Short-Term Borrowings - Short-Term Borrowings (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Debt Disclosure [Abstract]
Other secured financings (short-term)	$ 14,896	$ 13,118
Unsecured short-term borrowings	46,922	39,265
Total	$ 61,818	$ 52,383

Short-Term Borrowings - Unsecur

Short-Term Borrowings - Unsecured Short-Term Borrowings (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Debt Disclosure [Abstract]
Current portion of unsecured long-term borrowings	$ 30,090	$ 23,528
Hybrid financial instruments	12,973	11,700
Other unsecured short-term borrowings	3,859	4,037
Total unsecured short-term borrowings	$ 46,922	$ 39,265
Unsecured short-term debt, weighted average interest rate, after giving effect to hedging activities	2.28%	1.68%

Short-Term Borrowings - Unse139

Short-Term Borrowings - Unsecured Short-Term Borrowings (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Short-term Debt [Line Items]
Current portion unsecured long-term borrowings	$ 30,090	$ 23,528
Group Inc. [Member]
Short-term Debt [Line Items]
Current portion unsecured long-term borrowings	$ 26,280	$ 21,530

Long-Term Borrowings - Long-Ter

Long-Term Borrowings - Long-Term Borrowings (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Long-term Debt, Excluding Current Maturities [Abstract]
Other secured financings (long-term)	$ 9,892	$ 8,405
Unsecured long-term borrowings	217,687	189,086
Total	$ 227,579	$ 197,491

Long-Term Borrowings - Unsecure

Long-Term Borrowings - Unsecured Long-Term Borrowings (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Total	$ 217,687	$ 189,086
Group Inc. [Member]
Debt Instrument [Line Items]
Fixed-rate obligations	136,907	125,159
Floating-rate obligations	53,575	46,976
Total	190,482	172,135
Subsidiaries [Member]
Debt Instrument [Line Items]
Fixed-rate obligations	4,103	3,113
Floating-rate obligations	23,102	13,838
Total	27,205	16,951
U.S. Dollar [Member]
Debt Instrument [Line Items]
Total	148,649	132,861
U.S. Dollar [Member] | Group Inc. [Member]
Debt Instrument [Line Items]
Fixed-rate obligations	101,791	93,885
Floating-rate obligations	29,637	27,864
U.S. Dollar [Member] | Subsidiaries [Member]
Debt Instrument [Line Items]
Fixed-rate obligations	2,244	2,228
Floating-rate obligations	14,977	8,884
Non-U.S. Dollar [Member]
Debt Instrument [Line Items]
Total	69,038	56,225
Non-U.S. Dollar [Member] | Group Inc. [Member]
Debt Instrument [Line Items]
Fixed-rate obligations	35,116	31,274
Floating-rate obligations	23,938	19,112
Non-U.S. Dollar [Member] | Subsidiaries [Member]
Debt Instrument [Line Items]
Fixed-rate obligations	1,859	885
Floating-rate obligations	$ 8,125	$ 4,954

Long-Term Borrowings - Unsec142

Long-Term Borrowings - Unsecured Long-Term Borrowings (Parenthetical) (Detail) - Unsecured Debt [Member]	Dec. 31, 2017	Dec. 31, 2016
U.S. Dollar [Member] | Minimum [Member]
Debt Instrument [Line Items]
Fixed interest rate debt obligations interest rates range	1.60%	1.60%
U.S. Dollar [Member] | Maximum [Member]
Debt Instrument [Line Items]
Fixed interest rate debt obligations interest rates range	10.04%	10.04%
U.S. Dollar [Member] | Weighted Average [Member]
Debt Instrument [Line Items]
Fixed interest rate debt obligations interest rates range	4.24%	4.57%
Non-U.S. Dollar [Member] | Minimum [Member]
Debt Instrument [Line Items]
Fixed interest rate debt obligations interest rates range	0.31%	0.02%
Non-U.S. Dollar [Member] | Maximum [Member]
Debt Instrument [Line Items]
Fixed interest rate debt obligations interest rates range	13.00%	13.00%
Non-U.S. Dollar [Member] | Weighted Average [Member]
Debt Instrument [Line Items]
Fixed interest rate debt obligations interest rates range	2.60%	3.05%

Long-Term Borrowings - Unsec143

Long-Term Borrowings - Unsecured Long-Term Borrowings by Maturity Date (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Total	$ 217,687	$ 189,086
Unsecured Debt [Member]
Debt Instrument [Line Items]
2,019	30,505
2,020	23,120
2,021	21,781
2,022	22,602
2023 - thereafter	119,679
Group Inc. [Member]
Debt Instrument [Line Items]
Total	190,482	172,135
Group Inc. [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
2,019	24,915
2,020	20,215
2,021	20,547
2,022	21,044
2023 - thereafter	103,761
Subsidiaries [Member]
Debt Instrument [Line Items]
Total	27,205	$ 16,951
Subsidiaries [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
2,019	5,590
2,020	2,905
2,021	1,234
2,022	1,558
2023 - thereafter	$ 15,918

Long-Term Borrowings - Unsec144

Long-Term Borrowings - Unsecured Long-Term Borrowings by Maturity Date (Parenthetical) (Detail) $ in Millions	Dec. 31, 2017USD ($)
Debt Disclosure [Abstract]
2,019	$ 167
2,020	192
2,021	387
2,022	(82)
2023 and thereafter	4,950
Amount related to interest rate hedges on certain unsecured long-term borrowings	$ 5,610

Long-Term Borrowings - Unsec145

Long-Term Borrowings - Unsecured Long-Term Borrowings after Hedging (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Fixed rate obligations at fair value	$ 147	$ 150
Fixed rate obligations at amortized cost	90,803	74,718
Floating rate obligations at fair value	38,491	29,260
Floating rate obligations at amortized cost	88,246	84,958
Total	217,687	189,086
Group Inc. [Member]
Debt Instrument [Line Items]
Fixed rate obligations at fair value	0	0
Fixed rate obligations at amortized cost	86,951	71,225
Floating rate obligations at fair value	18,207	17,591
Floating rate obligations at amortized cost	85,324	83,319
Total	190,482	172,135
Subsidiaries [Member]
Debt Instrument [Line Items]
Fixed rate obligations at fair value	147	150
Fixed rate obligations at amortized cost	3,852	3,493
Floating rate obligations at fair value	20,284	11,669
Floating rate obligations at amortized cost	2,922	1,639
Total	$ 27,205	$ 16,951

Long-Term Borrowings - Unsec146

Long-Term Borrowings - Unsecured Long-Term Borrowings after Hedging (Parenthetical) (Detail)	Dec. 31, 2017	Dec. 31, 2016
Debt Disclosure [Abstract]
Effective weighted average interest rates for unsecured long-term borrowings, after hedging - total	2.86%	2.87%
Effective weighted average interest rates for unsecured long-term borrowings, after hedging fixed rate obligations	3.67%	3.90%
Effective weighted average interest rates for unsecured long-term borrowings, after hedging - floating rate obligations	2.02%	1.97%

Long-Term Borrowings - Addition

Long-Term Borrowings - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Minimum redemption or purchase price required	$ 253
APEX exchanged, par amount		$ 1,320
Series E and Series F Preferred Stock canceled, redemption value		$ 1,320
Subordinated Debt [Member]
Debt Instrument [Line Items]
Subordinated debt maturities, description	As of December 2017 and December 2016, subordinated debt had maturities ranging from 2020 to 2045, and 2018 to 2045, respectively.
Subordinated debt maturities, range, start	Dec. 31, 2020	Dec. 31, 2018
Subordinated debt maturities, range, end	Dec. 31, 2045	Dec. 31, 2045
Long-term debt repurchased, par amount	$ 1,450
Long-term debt repurchased, carrying amount	1,800
Long-term debt repurchased, purchase price	$ 1,700
Goldman Sachs Capital I [Member]
Debt Instrument [Line Items]
Interest Rate of Junior Subordinated Debentures issued to Trust, Fixed	6.345%
Maturity date of Junior Subordinated Debentures issued to Trust	Feb. 15, 2034
Junior subordinated debentures issued to Goldman Sachs Capital I (Trust)	$ 2,840
Guaranteed preferred beneficial interests issued to third parties	2,750
Common beneficial interests issued to Group Inc.	85
Junior subordinated debt, outstanding par amount	1,170	$ 1,360
Trust Preferred Securities, outstanding par amount	1,130	1,320
Common beneficial interests, outstanding par amount	35.1	40.8
Trust Preferred Securities purchased, par amount	186
Common beneficial interests delivered to the Trust	$ 5.7
Interest Rate of Junior Subordinated Debentures held by certain third parties	6.345%
Maturity date of Junior Subordinated Debentures held by certain third parties	Feb. 15, 2034
The 2012 Trusts [Member]
Debt Instrument [Line Items]
Senior guaranteed trust securities issued by the Murray Street Trust and Vesey Street Trust (together, the 2012 Trusts)	$ 2,250
Senior guaranteed trust securities issued by the Murray Street Trust and Vesey Street Trust outstanding		$ 1,450

Long-Term Borrowings - Subordin

Long-Term Borrowings - Subordinated Long-Term Borrowings (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Total subordinated Long-term Borrowings, par amount	$ 15,285	$ 16,418
Long-term subordinated debt outstanding	16,235	17,604
Long-term junior subordinated debt	1,539	1,809
Total subordinated Long-term Borrowings	$ 17,774	$ 19,413
Effective weighted average interest rate of long-term subordinated debt, after hedging	3.31%	4.29%
Effective weighted average interest rate of long-term junior subordinated debt, after hedging	2.37%	5.70%
Effective weighted average interest rate on long-term subordinated borrowings, after hedging	3.24%	4.41%
Subordinated Debt [Member]
Debt Instrument [Line Items]
Long-term debt, par amount	$ 14,117	$ 15,058
Junior Subordinated Debt [Member]
Debt Instrument [Line Items]
Long-term debt, par amount	$ 1,168	$ 1,360

Long-Term Borrowings - Subor149

Long-Term Borrowings - Subordinated Long-Term Borrowings (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Long-term subordinated debt outstanding	$ 16,235	$ 17,604
Subordinated Debt [Member]
Debt Instrument [Line Items]
Long-term debt, par amount	14,117	15,058
Group Inc. [Member]
Debt Instrument [Line Items]
Long-term subordinated debt outstanding	16,080	17,390
Group Inc. [Member] | Subordinated Debt [Member]
Debt Instrument [Line Items]
Long-term debt, par amount	$ 13,960	$ 14,840

Other Liabilities and Accrue150

Other Liabilities and Accrued Expenses - Other Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Other Liabilities Disclosure [Abstract]
Compensation and benefits	$ 6,710	$ 7,181
Noncontrolling interests	553	506
Income tax-related liabilities	4,051	1,794
Employee interests in consolidated funds	156	77
Subordinated liabilities of consolidated VIEs	19	584
Accrued expenses and other	5,433	4,220
Total	$ 16,922	$ 14,362

Commitments, Contingencies a151

Commitments, Contingencies and Guarantees - Commitments (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Commitment Liabilities [Line Items]
Total commitments to extend credit	$ 143,746	$ 112,056
Contingent and forward starting collateralized agreements	41,756	25,348
Forward starting collateralized financings	16,902	8,939
Letters of credit	437	373
Investment commitments	6,840	8,444
Other	6,310	6,014
Total commitments	215,991	161,174
Maturities, Year 1 [Member]
Commitment Liabilities [Line Items]
Total commitments to extend credit	18,895
Contingent and forward starting collateralized agreements	41,756
Forward starting collateralized financings	16,902
Letters of credit	288
Investment commitments	2,836
Other	6,089
Total commitments	86,766
Maturities, Year 2 and Year 3 [Member]
Commitment Liabilities [Line Items]
Total commitments to extend credit	52,863
Letters of credit	109
Investment commitments	676
Other	171
Total commitments	53,819
Maturities, Year 3 and Year 4 [Member]
Commitment Liabilities [Line Items]
Total commitments to extend credit	61,505
Investment commitments	493
Other	50
Total commitments	62,048
Maturities, Year 5 and Thereafter [Member]
Commitment Liabilities [Line Items]
Total commitments to extend credit	10,483
Letters of credit	40
Investment commitments	2,835
Total commitments	13,358
Investment Grade Commercial Lending [Member]
Commitment Liabilities [Line Items]
Total commitments to extend credit	93,115	73,664
Investment Grade Commercial Lending [Member] | Maturities, Year 1 [Member]
Commitment Liabilities [Line Items]
Total commitments to extend credit	14,593
Investment Grade Commercial Lending [Member] | Maturities, Year 2 and Year 3 [Member]
Commitment Liabilities [Line Items]
Total commitments to extend credit	38,836
Investment Grade Commercial Lending [Member] | Maturities, Year 3 and Year 4 [Member]
Commitment Liabilities [Line Items]
Total commitments to extend credit	38,431
Investment Grade Commercial Lending [Member] | Maturities, Year 5 and Thereafter [Member]
Commitment Liabilities [Line Items]
Total commitments to extend credit	1,255
Non Investment Grade Commercial Lending [Member]
Commitment Liabilities [Line Items]
Total commitments to extend credit	45,291	34,878
Non Investment Grade Commercial Lending [Member] | Maturities, Year 1 [Member]
Commitment Liabilities [Line Items]
Total commitments to extend credit	2,614
Non Investment Grade Commercial Lending [Member] | Maturities, Year 2 and Year 3 [Member]
Commitment Liabilities [Line Items]
Total commitments to extend credit	12,297
Non Investment Grade Commercial Lending [Member] | Maturities, Year 3 and Year 4 [Member]
Commitment Liabilities [Line Items]
Total commitments to extend credit	21,833
Non Investment Grade Commercial Lending [Member] | Maturities, Year 5 and Thereafter [Member]
Commitment Liabilities [Line Items]
Total commitments to extend credit	8,547
Warehouse Financing [Member]
Commitment Liabilities [Line Items]
Total commitments to extend credit	5,340	$ 3,514
Warehouse Financing [Member] | Maturities, Year 1 [Member]
Commitment Liabilities [Line Items]
Total commitments to extend credit	1,688
Warehouse Financing [Member] | Maturities, Year 2 and Year 3 [Member]
Commitment Liabilities [Line Items]
Total commitments to extend credit	1,730
Warehouse Financing [Member] | Maturities, Year 3 and Year 4 [Member]
Commitment Liabilities [Line Items]
Total commitments to extend credit	1,241
Warehouse Financing [Member] | Maturities, Year 5 and Thereafter [Member]
Commitment Liabilities [Line Items]
Total commitments to extend credit	$ 681

Commitments, Contingencies a152

Commitments, Contingencies and Guarantees - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Summary Of Commitments And Contingent Liabilities [Line Items]
Approximate amount of lending commitments held for investment	$ 124,504,000,000	$ 98,045,000,000
Approximate amount of lending commitments held for sale	9,840,000,000	6,870,000,000
Notional amount of loan commitments which are protected by SMFG against credit loss	$ 25,700,000,000	$ 26,880,000,000
Credit loss protection percentage of first loss on loan commitments provided by SMFG	95.00%
Approximate amount of maximum protection of first loss on loan commitments provided by SMFG	$ 950,000,000
SMFG credit loss protection for additional losses percentage	70.00%	70.00%
Maximum protection on additional losses on loan commitments provided by SMFG	$ 1,130,000,000	$ 1,130,000,000
Protection provided by SMFG for additional losses	550,000,000	768,000,000
Commitments to invest in funds managed by the firm	$ 2,090,000,000	2,100,000,000
The latest year through which the firm's noncancelable lease agreements extend	2,069
Operating Leases, Rent Expense	$ 273,000,000	244,000,000	$ 249,000,000
Exit costs incurred		(68,000,000)
Amount of loans sold to government sponsored enterprises during the period 2005 through 2008	10,000,000,000
Amount of loans sold to other third parties during the period 2005 through 2008	11,000,000,000
Outstanding balance for loans transferred to trusts and other mortgage securitization vehicles during the period 2005 through 2008	125,000,000,000
Collateral held by lenders in connection with securities lending indemnifications	39,030,000,000	$ 34,330,000,000
Residential Mortgage Backed Securities Working Group [Member]
Summary Of Commitments And Contingent Liabilities [Line Items]
Settlement agreement amount	$ 1,800,000,000

Commitments, Contingencies a153

Commitments, Contingencies and Guarantees - Leases (Detail) $ in Millions	Dec. 31, 2017USD ($)
Commitments and Contingencies Disclosure [Abstract]
2,018	$ 299
2,019	282
2,020	262
2,021	205
2,022	145
2023 - thereafter	771
Total	$ 1,964

Commitments, Contingencies a154

Commitments, Contingencies and Guarantees - Guarantees (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Derivative Guarantee [Member]
Guarantor Obligations [Line Items]
Carrying Value of Net Liability	$ 5,406	$ 8,873
Maximum Payout/Notional Amount by Period of Expiration	1,493,873	816,774
Derivative Guarantee [Member] | Maturities, Year 1 [Member]
Guarantor Obligations [Line Items]
Maximum Payout/Notional Amount by Period of Expiration	1,139,751	432,328
Derivative Guarantee [Member] | Maturities, Year 2 and Year 3 [Member]
Guarantor Obligations [Line Items]
Maximum Payout/Notional Amount by Period of Expiration	205,983	261,676
Derivative Guarantee [Member] | Maturities, Year 4 and Year 5 [Member]
Guarantor Obligations [Line Items]
Maximum Payout/Notional Amount by Period of Expiration	71,599	71,264
Derivative Guarantee [Member] | Maturities, Year 6 and Thereafter [Member]
Guarantor Obligations [Line Items]
Maximum Payout/Notional Amount by Period of Expiration	76,540	51,506
Securities Lending Indemnification [Member]
Guarantor Obligations [Line Items]
Maximum Payout/Notional Amount by Period of Expiration	37,959	33,403
Securities Lending Indemnification [Member] | Maturities, Year 1 [Member]
Guarantor Obligations [Line Items]
Maximum Payout/Notional Amount by Period of Expiration	37,959	33,403
Financial Guarantee [Member]
Guarantor Obligations [Line Items]
Carrying Value of Net Liability	37	50
Maximum Payout/Notional Amount by Period of Expiration	3,584	3,662
Financial Guarantee [Member] | Maturities, Year 1 [Member]
Guarantor Obligations [Line Items]
Maximum Payout/Notional Amount by Period of Expiration	723	1,064
Financial Guarantee [Member] | Maturities, Year 2 and Year 3 [Member]
Guarantor Obligations [Line Items]
Maximum Payout/Notional Amount by Period of Expiration	1,515	763
Financial Guarantee [Member] | Maturities, Year 4 and Year 5 [Member]
Guarantor Obligations [Line Items]
Maximum Payout/Notional Amount by Period of Expiration	1,209	1,662
Financial Guarantee [Member] | Maturities, Year 6 and Thereafter [Member]
Guarantor Obligations [Line Items]
Maximum Payout/Notional Amount by Period of Expiration	$ 137	$ 173

Commitments, Contingencies a155

Commitments, Contingencies and Guarantees - Guarantees (Parenthetical) (Detail) - Derivative Guarantee [Member] - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Guarantor Obligations [Line Items]
Carrying value of derivatives included derivative assets	$ 2,200	$ 1,200
Carrying value of derivatives included derivative liabilities	$ 7,610	$ 10,070

Shareholders' Equity - Addition

Shareholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	Jan. 16, 2018	Jan. 10, 2018	Feb. 23, 2018	Nov. 30, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Equity [Line Items]
Common stock, shares authorized					4,000,000,000	4,000,000,000
Nonvoting common stock, shares authorized					200,000,000	200,000,000
Nonvoting common stock, par value					$ 0.01	$ 0.01
Common stock, par value					0.01	0.01
Dividends declared per common share					$ 2.90	$ 2.60	$ 2.55
Shares remitted by employees to satisfy minimum statutory employee tax withholding					12,165	49,374	35,217
Remitted Shares, Total					$ 3	$ 7	$ 6
Cancellation of RSUs to satisfy minimum statutory employee tax withholding					8,100,000	6,100,000	5,700,000
Cancelled RSUs, Total					$ 1,940	$ 921	$ 1,030
Cancellation of stock options to satisfy minimum statutory employee tax withholding and the exercise price of stock options					4,600,000	5,500,000	2,000,000
Cancelled stock options, Total					$ 1,090	$ 1,110	$ 406
APEX exchanged, par amount						1,320
APEX exchanged, fair value						$ 1,040
Series E Preferred Stock cancelled, number of shares						9,833
Series F Preferred Stock cancelled, number of shares						3,385
Series E and Series F Preferred Stock cancelled, redemption value						$ 1,320
Series E and Series F Preferred Stock cancelled, net carrying value						1,310
Difference between fair value of APEX and net carrying value of preferred stock at time of cancellation						266
Group Inc. [Member]
Equity [Line Items]
APEX exchanged, fair value						1,040
Series E and Series F Preferred Stock cancelled, net carrying value						$ 1,310
Series I Preferred Stock [Member]
Equity [Line Items]
Number of shares redeemed				34,000
Dividend rate				5.95%
Amount of redeemed				$ 850
Preferred Stock, Redemption Price Per Share				$ 25,000
Difference between the redemption value of Preferred Stock and the net carrying value at the time of redemption				$ 14
Preferred stock dividends declared					$ 1,487.52	$ 1,487.52	$ 1,487.52
Series A Preferred Stock [Member]
Equity [Line Items]
Preferred stock dividends declared					950.51	953.12	950.52
Series B Preferred Stock [Member]
Equity [Line Items]
Preferred stock dividends declared					1,550	1,550	1,550
Series C Preferred Stock [Member]
Equity [Line Items]
Preferred stock dividends declared					1,013.90	1,016.68	1,013.90
Series D Preferred Stock [Member]
Equity [Line Items]
Preferred stock dividends declared					1,013.90	1,016.68	1,013.90
Series J Preferred Stock [Member]
Equity [Line Items]
Preferred stock dividends declared					1,375	1,375	1,375
Series K Preferred Stock [Member]
Equity [Line Items]
Preferred stock dividends declared					1,593.76	1,593.76	1,593.76
Series N Preferred Stock [Member]
Equity [Line Items]
Preferred stock dividends declared					1,575	1,124.38
Series E Preferred Stock [Member]
Equity [Line Items]
Preferred stock dividends declared					4,055.55	4,066.66	4,055.55
Series F Preferred Stock [Member]
Equity [Line Items]
Preferred stock dividends declared					$ 4,055.55	$ 4,066.66	$ 4,055.55
Subsequent Event [Member]
Equity [Line Items]
Dividends declared per common share	$ 0.75
Dividends payable date declared	Jan. 16, 2018
Dividends payable date to be paid	Mar. 29, 2018
Dividends payable date of record	Mar. 1, 2018
Subsequent Event [Member] | Series A Preferred Stock [Member] | Group Inc. [Member]
Equity [Line Items]
Dividends payable date declared		Jan. 10, 2018
Dividends payable date to be paid		Feb. 12, 2018
Dividends payable date of record		Jan. 28, 2018
Preferred stock dividends declared		$ 244.79
Subsequent Event [Member] | Series B Preferred Stock [Member]
Equity [Line Items]
Number of shares redeemed			26,000
Dividend rate			6.20%
Amount of redeemed			$ 650
Preferred Stock, Redemption Price Per Share			$ 25,000
Difference between the redemption value of Preferred Stock and the net carrying value at the time of redemption			$ 15
Subsequent Event [Member] | Series B Preferred Stock [Member] | Group Inc. [Member]
Equity [Line Items]
Dividends payable date declared		Jan. 10, 2018
Dividends payable date to be paid		Feb. 12, 2018
Dividends payable date of record		Jan. 28, 2018
Preferred stock dividends declared		$ 387.50
Subsequent Event [Member] | Series C Preferred Stock [Member] | Group Inc. [Member]
Equity [Line Items]
Dividends payable date declared		Jan. 10, 2018
Dividends payable date to be paid		Feb. 12, 2018
Dividends payable date of record		Jan. 28, 2018
Preferred stock dividends declared		$ 261.11
Subsequent Event [Member] | Series D Preferred Stock [Member] | Group Inc. [Member]
Equity [Line Items]
Dividends payable date declared		Jan. 10, 2018
Dividends payable date to be paid		Feb. 12, 2018
Dividends payable date of record		Jan. 28, 2018
Preferred stock dividends declared		$ 261.11
Subsequent Event [Member] | Series J Preferred Stock [Member] | Group Inc. [Member]
Equity [Line Items]
Dividends payable date declared		Jan. 10, 2018
Dividends payable date to be paid		Feb. 12, 2018
Dividends payable date of record		Jan. 28, 2018
Preferred stock dividends declared		$ 343.75
Subsequent Event [Member] | Series K Preferred Stock [Member] | Group Inc. [Member]
Equity [Line Items]
Dividends payable date declared		Jan. 10, 2018
Dividends payable date to be paid		Feb. 12, 2018
Dividends payable date of record		Jan. 28, 2018
Preferred stock dividends declared		$ 398.44
Subsequent Event [Member] | Series N Preferred Stock [Member] | Group Inc. [Member]
Equity [Line Items]
Dividends payable date declared		Jan. 10, 2018
Dividends payable date to be paid		Feb. 12, 2018
Dividends payable date of record		Jan. 28, 2018
Preferred stock dividends declared		$ 393.75
Subsequent Event [Member] | Series E Preferred Stock [Member] | Group Inc. [Member]
Equity [Line Items]
Dividends payable date declared		Jan. 10, 2018
Dividends payable date to be paid		Mar. 1, 2018
Dividends payable date of record		Feb. 14, 2018
Preferred stock dividends declared		$ 1,000
Subsequent Event [Member] | Series F Preferred Stock [Member] | Group Inc. [Member]
Equity [Line Items]
Dividends payable date declared		Jan. 10, 2018
Dividends payable date to be paid		Mar. 1, 2018
Dividends payable date of record		Feb. 14, 2018
Preferred stock dividends declared		$ 1,000

Shareholders' Equity - Summary

Shareholders' Equity - Summary of Amount of Common Stock Repurchased by the Firm (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Equity [Abstract]
Common share repurchases	29	36.6	22.1
Average cost per share	$ 231.87	$ 165.88	$ 189.41
Total cost of common share repurchases	$ 6,721	$ 6,069	$ 4,195

Shareholders' Equity - Summa158

Shareholders' Equity - Summary of Perpetual Preferred Stock Issued and Outstanding (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2017	Nov. 30, 2017
Class of Stock [Line Items]
Shares Authorized	540,750
Shares Issued	446,282
Shares Outstanding	446,280
Redemption Value	$ 11,853
Series A Preferred Stock [Member]
Class of Stock [Line Items]
Shares Authorized	50,000
Shares Issued	30,000
Shares Outstanding	29,999
Depositary Shares Per Share	1,000
Earliest Redemption Date	Currently redeemable
Liquidation Preference	$ 25,000
Redemption Value	$ 750
Dividend rate	3 month LIBOR + 0.75%, with floor of 3.75%, payable quarterly
Series B Preferred Stock [Member]
Class of Stock [Line Items]
Shares Authorized	50,000
Shares Issued	32,000
Shares Outstanding	32,000
Depositary Shares Per Share	1,000
Earliest Redemption Date	Currently redeemable
Liquidation Preference	$ 25,000
Redemption Value	$ 800
Dividend rate	6.20%, payable quarterly
Series C Preferred Stock [Member]
Class of Stock [Line Items]
Shares Authorized	25,000
Shares Issued	8,000
Shares Outstanding	8,000
Depositary Shares Per Share	1,000
Earliest Redemption Date	Currently redeemable
Liquidation Preference	$ 25,000
Redemption Value	$ 200
Dividend rate	3 month LIBOR + 0.75%, with floor of 4.00%, payable quarterly
Series D Preferred Stock [Member]
Class of Stock [Line Items]
Shares Authorized	60,000
Shares Issued	54,000
Shares Outstanding	53,999
Depositary Shares Per Share	1,000
Earliest Redemption Date	Currently redeemable
Liquidation Preference	$ 25,000
Redemption Value	$ 1,350
Dividend rate	3 month LIBOR + 0.67%, with floor of 4.00%, payable quarterly
Series E Preferred Stock [Member]
Class of Stock [Line Items]
Shares Authorized	17,500
Shares Issued	7,667
Shares Outstanding	7,667
Earliest Redemption Date	Currently redeemable
Liquidation Preference	$ 100,000
Redemption Value	$ 767
Dividend rate	3 month LIBOR + 0.77%, with floor of 4.00%, payable quarterly
Series F Preferred Stock [Member]
Class of Stock [Line Items]
Shares Authorized	5,000
Shares Issued	1,615
Shares Outstanding	1,615
Earliest Redemption Date	Currently redeemable
Liquidation Preference	$ 100,000
Redemption Value	$ 161
Dividend rate	3 month LIBOR + 0.77%, with floor of 4.00%, payable quarterly
Series J Preferred Stock [Member]
Class of Stock [Line Items]
Shares Authorized	46,000
Shares Issued	40,000
Shares Outstanding	40,000
Depositary Shares Per Share	1,000
Earliest Redemption Date	May 10, 2023
Liquidation Preference	$ 25,000
Redemption Value	$ 1,000
Dividend rate	5.50% to, but excluding, May 10, 2023; 3 month LIBOR + 3.64% thereafter, payable quarterly
Series K Preferred Stock [Member]
Class of Stock [Line Items]
Shares Authorized	32,200
Shares Issued	28,000
Shares Outstanding	28,000
Depositary Shares Per Share	1,000
Earliest Redemption Date	May 10, 2024
Liquidation Preference	$ 25,000
Redemption Value	$ 700
Dividend rate	6.375% to, but excluding, May 10, 2024; 3 month LIBOR + 3.55% thereafter, payable quarterly
Series L Preferred Stock [Member]
Class of Stock [Line Items]
Shares Authorized	52,000
Shares Issued	52,000
Shares Outstanding	52,000
Depositary Shares Per Share	25
Earliest Redemption Date	May 10, 2019
Liquidation Preference	$ 25,000
Redemption Value	$ 1,300
Dividend rate	5.70%, payable semi-annually, from issuance date to, but excluding, May 10, 2019; 3 month LIBOR + 3.884%, payable quarterly, thereafter
Series M Preferred Stock [Member]
Class of Stock [Line Items]
Shares Authorized	80,000
Shares Issued	80,000
Shares Outstanding	80,000
Depositary Shares Per Share	25
Earliest Redemption Date	May 10, 2020
Liquidation Preference	$ 25,000
Redemption Value	$ 2,000
Dividend rate	5.375%, payable semi-annually, from issuance date to, but excluding, May 10, 2020; 3 month LIBOR + 3.922%, payable quarterly, thereafter
Series N Preferred Stock [Member]
Class of Stock [Line Items]
Shares Authorized	31,050
Shares Issued	27,000
Shares Outstanding	27,000
Depositary Shares Per Share	1,000
Earliest Redemption Date	May 10, 2021
Liquidation Preference	$ 25,000
Redemption Value	$ 675
Dividend rate	6.30%, payable quarterly
Series O Preferred Stock [Member]
Class of Stock [Line Items]
Shares Authorized	26,000
Shares Issued	26,000
Shares Outstanding	26,000
Depositary Shares Per Share	25
Earliest Redemption Date	Nov. 10, 2026
Liquidation Preference	$ 25,000
Redemption Value	$ 650
Dividend rate	5.30%, payable semi-annually, from issuance date to, but excluding, November 10, 2026; 3 month LIBOR + 3.834%, payable quarterly, thereafter
Series P Preferred Stock [Member]
Class of Stock [Line Items]
Shares Authorized	66,000
Shares Issued	60,000	60,000
Shares Outstanding	60,000
Depositary Shares Per Share	25
Earliest Redemption Date	Nov. 10, 2022
Liquidation Preference	$ 25,000
Redemption Value	$ 1,500
Dividend rate	5.00%, payable semi-annually, from issuance date to, but excluding, November 10, 2022; 3 month LIBOR + 2.874%, payable quarterly, thereafter

Shareholders' Equity - Summa159

Shareholders' Equity - Summary of Perpetual Preferred Stock Issued and Outstanding (Parenthetical) (Detail) - $ / shares	1 Months Ended
	Nov. 30, 2017	Dec. 31, 2017
Class of Stock [Line Items]
Shares Issued		446,282
Series A Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock		$ 0.01
Shares Issued		30,000
Series B Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock		$ 0.01
Shares Issued		32,000
Series C Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock		$ 0.01
Shares Issued		8,000
Series D Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock		$ 0.01
Shares Issued		54,000
Series E Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock		$ 0.01
Shares Issued		7,667
Series F Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock		$ 0.01
Shares Issued		1,615
Series J Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock		$ 0.01
Shares Issued		40,000
Series K Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock		$ 0.01
Shares Issued		28,000
Series L Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock		$ 0.01
Shares Issued		52,000
Series M Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock		$ 0.01
Shares Issued		80,000
Series N Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock		$ 0.01
Shares Issued		27,000
Series O Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock		$ 0.01
Shares Issued		26,000
Series P Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock		$ 0.01
Shares Issued	60,000	60,000
Preferred stock dividend rate	5.00%

Shareholders' Equity - Summa160

Shareholders' Equity - Summary of Preferred Dividends Declared on Preferred Stock Issued (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Class of Stock [Line Items]
Total preferred stock dividends declared	$ 587	$ 577	$ 515
Series A Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock dividends declared	$ 950.51	$ 953.12	$ 950.52
Total preferred stock dividends declared	$ 29	$ 29	$ 28
Series B Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock dividends declared	$ 1,550	$ 1,550	$ 1,550
Total preferred stock dividends declared	$ 50	$ 50	$ 50
Series C Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock dividends declared	$ 1,013.90	$ 1,016.68	$ 1,013.90
Total preferred stock dividends declared	$ 8	$ 8	$ 8
Series D Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock dividends declared	$ 1,013.90	$ 1,016.68	$ 1,013.90
Total preferred stock dividends declared	$ 55	$ 55	$ 54
Series E Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock dividends declared	$ 4,055.55	$ 4,066.66	$ 4,055.55
Total preferred stock dividends declared	$ 31	$ 50	$ 71
Series F Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock dividends declared	$ 4,055.55	$ 4,066.66	$ 4,055.55
Total preferred stock dividends declared	$ 6	$ 13	$ 20
Series I Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock dividends declared	$ 1,487.52	$ 1,487.52	$ 1,487.52
Total preferred stock dividends declared	$ 51	$ 51	$ 51
Series J Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock dividends declared	$ 1,375	$ 1,375	$ 1,375
Total preferred stock dividends declared	$ 55	$ 55	$ 55
Series K Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock dividends declared	$ 1,593.76	$ 1,593.76	$ 1,593.76
Total preferred stock dividends declared	$ 45	$ 45	$ 45
Series L Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock dividends declared	$ 1,425	$ 1,425	$ 1,425
Total preferred stock dividends declared	$ 74	$ 74	$ 74
Series M Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock dividends declared	$ 1,343.76	$ 1,343.76	$ 735.33
Total preferred stock dividends declared	$ 107	$ 107	$ 59
Series N Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock dividends declared	$ 1,575	$ 1,124.38
Total preferred stock dividends declared	$ 42	$ 30
Series O Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock dividends declared	$ 1,325	$ 379.10
Total preferred stock dividends declared	$ 34	$ 10

Shareholders' Equity - Summa161

Shareholders' Equity - Summary of Preferred Dividends Declared on Preferred Stock Issued (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2016$ / sharesshares
Equity [Abstract]
Series E and Series F Preferred Stock prorated dividend related to shares which were cancelled | $ / shares	$ 866.67
Series E Preferred Stock cancelled with prorated dividend , number of shares	4,861
Series F Preferred Stock cancelled with prorated dividend, number of shares	1,639

Shareholders' Equity - Accumula

Shareholders' Equity - Accumulated Other Comprehensive Loss, Net of Tax (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 86,893	$ 86,728
Other comprehensive income/(loss) adjustments, net of tax	(664)	(803)	$ 25
Ending balance	82,243	86,893	86,728
Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(647)	(587)
Other comprehensive income/(loss) adjustments, net of tax	22	(60)
Ending balance	(625)	(647)	(587)
Debt Valuation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(239)	305
Other comprehensive income/(loss) adjustments, net of tax	(807)	(544)
Ending balance	(1,046)	(239)	305
Pension and Postretirement Liabilities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(330)	(131)
Other comprehensive income/(loss) adjustments, net of tax	130	(199)
Ending balance	(200)	(330)	(131)
Available-for-sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income/(loss) adjustments, net of tax	(9)
Ending balance	(9)
Accumulated Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(1,216)	(718)	(743)
Other comprehensive income/(loss) adjustments, net of tax	(664)	(803)	25
Ending balance	$ (1,880)	(1,216)	(718)
Accumulated Other Comprehensive Loss [Member] | Accounting Standards Update 2016-01 [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		$ (413)
Ending balance			$ (413)

Regulation and Capital Adequ163

Regulation and Capital Adequacy - Minimum Capital Ratios (Detail)	Dec. 31, 2017	Dec. 31, 2016
Regulation And Capital Adequacy [Abstract]
CET1 ratio	7.00%	5.875%
Tier 1 capital ratio	8.50%	7.375%
Total capital ratio	10.50%	9.375%
Tier 1 leverage ratio	4.00%	4.00%

Regulation and Capital Adequ164

Regulation and Capital Adequacy - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital conservation buffer	2.50%	2.50%
Global Systemically Important Bank (G-SIB) buffer	2.50%	3.00%
Counter-cyclical capital buffer	0.00%	0.00%
Confidence level for regulatory VaR	99.00%
Confidence level for risk management VaR	95.00%
Time horizon for regulatory VaR (in days)	10 days
Time horizon for risk management VaR (in days)	1 day
Increased deductions due to transitional provisions, percentage	80.00%	60.00%
Minimum equity capital that is required to be maintained in regulated subsidiaries	$ 53,020	$ 46,490
Standardized Capital Rules [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Amount the firm's CET1 ratios, on a fully phased-in basis, were lower by as compared to the transitional CET1 ratios.	0.20%
Change in Credit RWAs	$ 56,817	(8,705)
Change in Market RWAs	$ 2,118	(18,726)
Basel III Advanced Transitional [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Amount the firm's CET1 ratios, on a fully phased-in basis, were lower by as compared to the transitional CET1 ratios.	0.20%
Change in Credit RWAs	$ 63,230	6,005
Change in Market RWAs	2,379	(18,506)
Change in Operational RWAs	2,387	(15,500)
GS&Co [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Regulatory net capital as defined by Rule 15c3-1	15,570	17,170
Excess amount of regulatory net capital as defined by Rule 15c3-1	13,150	$ 14,660
Amount of broker-dealer tentative net capital required to be held in accordance with Appendix E of Rule 15c3-1	1,000
Amount of broker-dealer net capital required to be held in accordance with Appendix E of Rule 15c3-1	500
Minimum tentative net capital required to be maintained by GS&Co or must notify the SEC	$ 5,000
GS Bank USA [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital conservation buffer	2.50%	2.50%
Counter-cyclical capital buffer	0.00%	0.00%
Amount deposited by GS Bank USA held at the Federal Reserve Bank of New York	$ 50,860	$ 74,240
Excess amount deposited by GS Bank USA held at the Federal Reserve Bank of New York	$ 50,740	$ 74,090

Regulation and Capital Adequ165

Regulation and Capital Adequacy - Consolidated Regulatory Capital Ratios (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Preferred stock	$ 11,853	$ 11,203
Tier 1 leverage ratio	8.40%	9.40%
Standardized Capital Rules [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common shareholders' equity	$ 70,390	$ 75,690
Deduction for goodwill and identifiable intangible assets, net of deferred tax liabilities	(3,269)	(2,874)
Deduction for investments in nonconsolidated financial institutions		(424)
Other adjustments	(11)	(346)
Total Common Equity Tier 1	67,110	72,046	$ 71,363
Preferred stock	11,853	11,203
Deduction for investments in covered funds	(590)	(445)
Other adjustments	(42)	(364)
Tier 1 capital	78,331	82,440	81,511
Qualifying subordinated debt	13,360	14,566
Junior subordinated debt issued to trusts	567	792
Allowance for losses on loans and lending commitments	1,078	722
Other adjustments	(28)	(6)
Tier 2 capital	14,977	16,074	16,705
Total capital	93,308	98,514
RWAs	$ 555,611	$ 496,676	524,107
CET1 ratio	12.10%	14.50%
Tier 1 capital ratio	14.10%	16.60%
Total capital ratio	16.80%	19.80%
Basel III Advanced Transitional [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Common Equity Tier 1	$ 67,110	$ 72,046	71,363
Tier 1 capital	78,331	82,440	81,511
Allowance for losses on loans and lending commitments	(1,078)	(722)
Tier 2 capital	13,899	15,352	16,103
Total capital	92,230	97,792
Standardized Tier 2 capital	14,977	16,074
RWAs	$ 617,646	$ 549,650	$ 577,651
CET1 ratio	10.90%	13.10%
Tier 1 capital ratio	12.70%	15.00%
Total capital ratio	14.90%	17.80%

Regulation and Capital Adequ166

Regulation and Capital Adequacy - Consolidated Regulatory Capital Ratios (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Regulation And Capital Adequacy [Abstract]
Goodwill	$ 3,665	$ 3,666
Identifiable intangible assets deducted from CET1 during transitional period	298	257
Identifiable Intangible Assets	$ 373	$ 429
Increased deductions due to transitional provisions, percentage	80.00%	60.00%
Deferred tax liabilities associated with goodwill and identifiable intangible assets	$ 694	$ 1,050
Subordinated debt maturity period	5 years

Regulation and Capital Adequ167

Regulation and Capital Adequacy - Capital Rollforward (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Standardized Capital Rules [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier 1, Beginning balance	$ 72,046	$ 71,363
Change in common shareholders' equity	(5,300)	162
Change in deduction for transitional provisions	(426)	(839)
Change in deduction for goodwill and identifiable intangible assets, net of deferred tax liabilities	(324)	16
Change in deduction for investments in nonconsolidated financial institutions	586	895
Change in other adjustments	528	449
Common Equity Tier 1, Ending balance	67,110	72,046
Tier 1 Capital, Beginning balance	82,440	81,511
Change in deduction for transitional provisions	(274)	(558)
Change in deduction for investments in covered funds	(145)	(32)
Other net increase (decrease) in CET1	(4,510)	1,522
Redesignation of junior subordinated debt issued to trusts		(330)
Change in preferred stock	650	3
Change in other adjustments	170	324
Tier 1 Capital, Ending balance	78,331	82,440
Tier 2 capital, Beginning balance	16,074	16,705
Change in qualifying subordinated debt	(1,206)	(566)
Redesignation of junior subordinated debt issued to trusts	(225)	(198)
Change in the allowance for losses on loans and lending commitments	356	120
Change in other adjustments	(22)	13
Tier 2 Capital, Ending balance	14,977	16,074
Total capital	93,308	98,514
Basel III Advanced Transitional [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier 1, Beginning balance	72,046	71,363
Change in common shareholders' equity	(5,300)	162
Change in deduction for transitional provisions	(426)	(839)
Change in deduction for goodwill and identifiable intangible assets, net of deferred tax liabilities	(324)	16
Change in deduction for investments in nonconsolidated financial institutions	586	895
Change in other adjustments	528	449
Common Equity Tier 1, Ending balance	67,110	72,046
Tier 1 Capital, Beginning balance	82,440	81,511
Change in deduction for transitional provisions	(274)	(558)
Change in deduction for investments in covered funds	(145)	(32)
Other net increase (decrease) in CET1	(4,510)	1,522
Redesignation of junior subordinated debt issued to trusts		(330)
Change in preferred stock	650	3
Change in other adjustments	170	324
Tier 1 Capital, Ending balance	78,331	82,440
Tier 2 capital, Beginning balance	15,352	16,103
Change in qualifying subordinated debt	(1,206)	(566)
Redesignation of junior subordinated debt issued to trusts	(225)	(198)
Change in other adjustments	(22)	13
Tier 2 Capital, Ending balance	13,899	15,352
Total capital	$ 92,230	$ 97,792

Regulation and Capital Adequ168

Regulation and Capital Adequacy - Risk-weighted Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Standardized Capital Rules [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Credit RWAs	$ 468,230	$ 411,413
Market RWAs	87,381	85,263
Total RWAs	555,611	496,676	$ 524,107
Standardized Capital Rules [Member] | Derivatives [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Credit RWAs	126,076	124,286
Standardized Capital Rules [Member] | Commitments Guarantees and Loans [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Credit RWAs	145,104	115,744
Standardized Capital Rules [Member] | Securities Financing Transactions [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Credit RWAs	77,962	71,319
Standardized Capital Rules [Member] | Equity Investments [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Credit RWAs	48,155	41,428
Standardized Capital Rules [Member] | Other [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Credit RWAs	70,933	58,636
Standardized Capital Rules [Member] | Regulatory VaR [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Market RWAs	7,532	9,750
Standardized Capital Rules [Member] | Stressed VaR [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Market RWAs	32,753	22,475
Standardized Capital Rules [Member] | Incremental Risk [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Market RWAs	8,441	7,875
Standardized Capital Rules [Member] | Comprehensive Risk [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Market RWAs	2,397	5,338
Standardized Capital Rules [Member] | Specific Risk [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Market RWAs	36,258	39,825
Basel III Advanced Transitional [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Credit RWAs	413,317	350,087
Market RWAs	86,854	84,475
Total Operational RWAs	117,475	115,088
Total RWAs	617,646	549,650	$ 577,651
Basel III Advanced Transitional [Member] | Derivatives [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Credit RWAs	102,986	105,096
Basel III Advanced Transitional [Member] | Commitments Guarantees and Loans [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Credit RWAs	163,375	122,792
Basel III Advanced Transitional [Member] | Securities Financing Transactions [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Credit RWAs	19,362	14,673
Basel III Advanced Transitional [Member] | Equity Investments [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Credit RWAs	51,626	44,095
Basel III Advanced Transitional [Member] | Other [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Credit RWAs	75,968	63,431
Basel III Advanced Transitional [Member] | Regulatory VaR [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Market RWAs	7,532	9,750
Basel III Advanced Transitional [Member] | Stressed VaR [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Market RWAs	32,753	22,475
Basel III Advanced Transitional [Member] | Incremental Risk [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Market RWAs	8,441	7,875
Basel III Advanced Transitional [Member] | Comprehensive Risk [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Market RWAs	1,870	4,550
Basel III Advanced Transitional [Member] | Specific Risk [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Market RWAs	$ 36,258	$ 39,825

Regulation and Capital Adequ169

Regulation and Capital Adequacy - Risk-weighted Assets Rollforward (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Standardized Capital Rules [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Risk-Weighted Assets, Beginning balance	$ 496,676	$ 524,107
Change in deduction due to transitional provisions	(233)	(531)
Change in Credit RWAs	56,817	(8,705)
Change in Market RWAs	2,118	(18,726)
Risk-Weighted Assets, end of period	555,611	496,676
Standardized Capital Rules [Member] | Derivatives [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Change in Credit RWAs	1,790	(12,555)
Standardized Capital Rules [Member] | Commitments Guarantees and Loans [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Change in Credit RWAs	29,360	4,353
Standardized Capital Rules [Member] | Securities Financing Transactions [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Change in Credit RWAs	6,643	(73)
Standardized Capital Rules [Member] | Equity Investments [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Change in Credit RWAs	6,889	4,196
Standardized Capital Rules [Member] | Other [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Change in Credit RWAs	12,368	(4,095)
Standardized Capital Rules [Member] | Regulatory VaR [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Change in Market RWAs	(2,218)	(2,250)
Standardized Capital Rules [Member] | Stressed VaR [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Change in Market RWAs	10,278	737
Standardized Capital Rules [Member] | Incremental Risk [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Change in Market RWAs	566	(1,638)
Standardized Capital Rules [Member] | Comprehensive Risk [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Change in Market RWAs	(2,941)	(387)
Standardized Capital Rules [Member] | Specific Risk [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Change in Market RWAs	(3,567)	(15,188)
Basel III Advanced Transitional [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Risk-Weighted Assets, Beginning balance	549,650	577,651
Change in deduction due to transitional provisions	(233)	(531)
Change in Credit RWAs	63,230	6,005
Change in Market RWAs	2,379	(18,506)
Change in operational risk	2,387	(15,500)
Change in Operational RWAs	2,387	(15,500)
Risk-Weighted Assets, end of period	617,646	549,650
Basel III Advanced Transitional [Member] | Derivatives [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Change in Credit RWAs	(2,110)	(8,575)
Basel III Advanced Transitional [Member] | Commitments Guarantees and Loans [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Change in Credit RWAs	40,583	8,269
Basel III Advanced Transitional [Member] | Securities Financing Transactions [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Change in Credit RWAs	4,689	(228)
Basel III Advanced Transitional [Member] | Equity Investments [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Change in Credit RWAs	7,693	4,440
Basel III Advanced Transitional [Member] | Other [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Change in Credit RWAs	12,608	2,630
Basel III Advanced Transitional [Member] | Regulatory VaR [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Change in Market RWAs	(2,218)	(2,250)
Basel III Advanced Transitional [Member] | Stressed VaR [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Change in Market RWAs	10,278	737
Basel III Advanced Transitional [Member] | Incremental Risk [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Change in Market RWAs	566	(1,638)
Basel III Advanced Transitional [Member] | Comprehensive Risk [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Change in Market RWAs	(2,680)	(167)
Basel III Advanced Transitional [Member] | Specific Risk [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Change in Market RWAs	$ (3,567)	$ (15,188)

Regulation and Capital Adequ170

Regulation and Capital Adequacy - Schedule of Minimum Ratios and Well Capitalized Minimum Ratios (Detail)	Dec. 31, 2017	Dec. 31, 2016
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Minimum CET1 ratio applicable to advanced approach banking institutions	7.00%	5.875%
GS Bank USA [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Minimum CET1 ratio applicable to advanced approach banking institutions	5.75%	5.125%
Minimum Tier 1 capital ratio applicable to advanced approach banking institutions	7.25%	6.625%
Minimum Total capital ratio applicable to advanced approach banking institutions	9.25%	8.625%
Minimum Tier 1 leverage ratio applicable to advanced approach banking institutions	4.00%	4.00%
Well-capitalized minimum CET1 ratio	6.50%
Well-capitalized minimum Tier 1 capital ratio	8.00%
Well-capitalized minimum total capital ratio	10.00%
Well-capitalized minimum Tier 1 leverage ratio	5.00%

Regulation and Capital Adequ171

Regulation and Capital Adequacy - Capital Ratios (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 leverage ratio	8.40%	9.40%
Standardized Capital Rules [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier 1	$ 67,110	$ 72,046	$ 71,363
Tier 1 capital	78,331	82,440	81,511
Allowance for losses on loans and lending commitments	1,078	722
Tier 2 capital	14,977	16,074	16,705
Total capital	93,308	98,514
Risk-weighted assets	$ 555,611	$ 496,676	524,107
CET1 ratio	12.10%	14.50%
Tier 1 capital ratio	14.10%	16.60%
Total capital ratio	16.80%	19.80%
Basel III Advanced Transitional [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier 1	$ 67,110	$ 72,046	71,363
Tier 1 capital	78,331	82,440	81,511
Standardized Tier 2 capital	14,977	16,074
Allowance for losses on loans and lending commitments	(1,078)	(722)
Tier 2 capital	13,899	15,352	16,103
Total capital	92,230	97,792
Risk-weighted assets	$ 617,646	$ 549,650	$ 577,651
CET1 ratio	10.90%	13.10%
Tier 1 capital ratio	12.70%	15.00%
Total capital ratio	14.90%	17.80%
GS Bank USA [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 leverage ratio	15.00%	14.40%
GS Bank USA [Member] | Standardized Capital Rules [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier 1	$ 25,343	$ 24,485
Tier 1 capital	25,343	24,485
Tier 2 capital	2,547	2,382
Total capital	27,890	26,867
Risk-weighted assets	$ 229,775	$ 204,232
CET1 ratio	11.00%	12.00%
Tier 1 capital ratio	11.00%	12.00%
Total capital ratio	12.10%	13.20%
GS Bank USA [Member] | Basel III Advanced Transitional [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier 1	$ 25,343	$ 24,485
Tier 1 capital	25,343	24,485
Standardized Tier 2 capital	2,547	2,382
Allowance for losses on loans and lending commitments	(547)	(382)
Tier 2 capital	2,000	2,000
Total capital	27,343	26,485
Risk-weighted assets	$ 164,602	$ 131,051
CET1 ratio	15.40%	18.70%
Tier 1 capital ratio	15.40%	18.70%
Total capital ratio	16.60%	20.20%

Earnings Per Common Share - Ear

Earnings Per Common Share - Earnings Per Common Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Earnings Per Share [Abstract]
Net earnings applicable to common shareholders	$ 3,685	$ 7,087	$ 5,568
Weighted average basic shares	401.6	427.4	448.9
Effect of dilutive securities:
RSUs	5.3	4.7	5.3
Stock options	2.2	3	4.4
Dilutive securities	7.5	7.7	9.7
Weighted average basic shares and dilutive securities	409.1	435.1	458.6
Basic EPS	$ 9.12	$ 16.53	$ 12.35
Diluted EPS	$ 9.01	$ 16.29	$ 12.14

Earnings Per Common Share - Add

Earnings Per Common Share - Additional Information (Detail) - $ / shares shares in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Earnings per common share
Reduction per common share due to impact of applying the amended principles to basic earnings per common share	$ 0.06	$ 0.05	$ 0.05
Number of antidilutive RSUs and common shares underlying antidilutive stock options	0.1	2.8	6

Transactions with Affiliated174

Transactions with Affiliated Funds - Fees Earned from Affiliated Funds (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Transactions With Affiliated Funds [Abstract]
Fees earned from funds	$ 2,932	$ 2,777	$ 3,293

Transactions with Affiliated175

Transactions with Affiliated Funds - Fees Receivable from Affiliated Funds and the Aggregate Carrying Value of the Firm's Interests in these Funds (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Transactions With Affiliated Funds [Abstract]
Fees receivable from funds	$ 637	$ 554
Aggregate carrying value of interests in funds	$ 4,993	$ 6,841

Transactions with Affiliated176

Transactions with Affiliated Funds - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Transactions With Affiliated Funds [Abstract]
Management fees waived	$ 98	$ 104
Outstanding guarantees on behalf of certain nonconsolidated investment funds	$ 154	$ 300

Interest Income and Interest177

Interest Income and Interest Expense - Interest Income and Interest Expense (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Interest income
Deposits with banks	$ 819	$ 452	$ 241
Collateralized agreements	1,661	691	17
Financial instruments owned	5,904	5,444	5,862
Loans receivable	2,678	1,843	1,191
Other interest	2,051	1,261	1,141
Total interest income	13,113	9,691	8,452
Interest expense
Deposits	1,380	878	408
Collateralized financings	863	442	330
Financial instruments sold, but not yet purchased	1,388	1,251	1,319
Short-term secured and unsecured borrowings	698	446	429
Long-term secured and unsecured borrowings	4,599	4,242	3,878
Other interest	1,253	(155)	(976)
Total interest expense	10,181	7,104	5,388
Net interest income	$ 2,932	$ 2,587	$ 3,064

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Line Items]
Tax legislation estimated impact, increase in income tax expense		$ 4,400,000,000
Tax legislation, repatriation tax, estimated income tax expense		$ 3,320,000,000
U.S. federal income tax rate		35.00%	35.00%	35.00%
Tax legislation, remeasurement of U.S. deferred tax assets and liabilities, estimated income tax expense		$ 1,080,000,000
Deferred Tax Assets, Operating Loss Carryforwards		428,000,000	$ 427,000,000
Operating Loss Carryforwards, Valuation Allowance		128,000,000	67,000,000
Operating Loss Carryforwards, U. S. Federal		268,000,000
Operating Loss Carryforwards, State and Local		$ 1,330,000,000
Operating Loss Carryforwards, Expiration Dates, U. S. Federal		2,018
Operating Loss Carryforwards, Expiration Dates, State and Local		2,018
Operating Loss Carryforwards, Expiration Dates, Foreign		2,018
Operating Loss Carryforwards, Foreign		$ 1,230,000,000
Tax Credit Carryforward, Amount, Foreign		446,000,000
General business credit carryforwards		533,000,000
State and local tax credit carryforwards		$ 27,000,000
Foreign tax credit carryforward, year expiration begins		2,027
General business tax credit carryforward, year expiration begins		2,037
State and local tax credit carryforward, year expiration begins		2,020
Capital Loss Carryforward Amount		$ 0	0
Deferred Tax Assets, Capital Loss Carryforward		0	0
Valuation Allowance, Deferred Tax Asset, Change in Amount		41,000,000	42,000,000
Deferred Tax Liability not recognized, Foreign Earnings			6,180,000,000
Reinvested Earnings			31,240,000,000
Income Tax Examination, Penalties and Interest Accrued		81,000,000	141,000,000
Income Tax Examination, Penalties and Interest Expense		$ 63,000,000	$ 27,000,000	$ 17,000,000
Scenario, Forecast [Member]
Income Tax Disclosure [Line Items]
U.S. federal income tax rate	21.00%

Income Taxes - Provision for Ta

Income Taxes - Provision for Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current taxes
U.S. federal	$ 320	$ 1,032	$ 1,116
State and local	64	139	(12)
Non-U.S.	1,004	1,184	1,166
Total current tax expense	1,388	2,355	2,270
Deferred taxes
U.S. federal	5,083	399	397
State and local	157	51	62
Non-U.S.	218	101	(34)
Total deferred tax expense	5,458	551	425
Provision for taxes	$ 6,846	$ 2,906	$ 2,695

Income Taxes - Effective Income

Income Taxes - Effective Income Tax Rate Reconciliation (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Effective Income Tax Rate Reconciliation, Percent [Abstract]
U.S. federal statutory income tax rate	35.00%	35.00%	35.00%
State and local taxes, net of U.S. federal income tax effects	1.50%	0.90%	0.30%
ASU No. 2016-09 tax benefits on settlement of employee share-based awards	(6.40%)
Non-U.S. operations	(6.30%)	(6.70%)	(12.10%)
Tax credits	(2.10%)	(2.00%)	(1.70%)
Tax-exempt income, including dividends	(0.20%)	(0.30%)	(0.70%)
Tax Legislation - repatriation tax	29.80%
Tax Legislation - remeasurement of deferred tax assets	9.70%
Non-deductible legal expenses	0.50%	1.00%	10.20%
Other		0.30%	(0.30%)
Effective income tax rate	61.50%	28.20%	30.70%

Income Taxes - Components of De

Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Components of Deferred Tax Assets and Liabilities [Abstract]
Compensation and benefits	$ 1,233	$ 2,461
ASC 740 asset related to unrecognized tax benefits	75	231	$ 197
Non-U.S. operations		967
Net operating losses	428	427
Occupancy-related	67	100
Other comprehensive income-related	408	757
Tax credits carryforward	1,006
Other, net	113	394
Subtotal	3,330	5,337
Valuation allowance	(156)	(115)
Total deferred tax assets	3,174	5,222
Depreciation and amortization	826	1,200
Tax Legislation - repatriation tax	3,114
Non-U.S. operations	180
Unrealized gains	742	342
Total deferred tax liabilities	$ 4,862	$ 1,542

Income Taxes - Rollforward of U

Income Taxes - Rollforward of Unrecognized Tax Benefits (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance, beginning of year	$ 852	$ 825	$ 871
Increases based on tax positions related to the current year	94	113	65
Increases based on tax positions related to prior years	101	188	158
Decreases based on tax positions related to prior years	(128)	(88)	(205)
Decreases related to settlements	(255)	(186)	(87)
Exchange rate fluctuations	1		23
Balance, end of year	665	852	825
Related deferred income tax asset	75	231	197
Net unrecognized tax benefit	$ 590	$ 621	$ 628

Income Taxes - Earliest Tax Yea

Income Taxes - Earliest Tax Years Subject to Examination by Major Jurisdiction (Detail)	12 Months Ended
	Dec. 31, 2017
U.S. Federal [Member]
Income Tax Examination [Line Items]
Open tax years by major tax jurisdiction	2,011
New York State and City [Member]
Income Tax Examination [Line Items]
Open tax years by major tax jurisdiction	2,011
United Kingdom [Member] | Foreign Tax Authority [Member]
Income Tax Examination [Line Items]
Open tax years by major tax jurisdiction	2,014
Japan [Member] | Foreign Tax Authority [Member]
Income Tax Examination [Line Items]
Open tax years by major tax jurisdiction	2,014
Hong Kong [Member] | Foreign Tax Authority [Member]
Income Tax Examination [Line Items]
Open tax years by major tax jurisdiction	2,011

Business Segments - Segment Ope

Business Segments - Segment Operating Results (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Net revenues	$ 32,073	$ 30,608	$ 33,820
Operating expenses	20,941	20,304	25,042
Pre-tax earnings	11,132	10,304	8,778
Total assets	916,776	860,165	861,395
Investment Banking - Financial Advisory [Member]
Segment Reporting Information [Line Items]
Net revenues	3,188	2,932	3,470
Investment Banking - Equity Underwriting [Member]
Segment Reporting Information [Line Items]
Net revenues	1,243	891	1,546
Investment Banking - Debt Underwriting [Member]
Segment Reporting Information [Line Items]
Net revenues	2,940	2,450	2,011
Investment Banking - Underwriting [Member]
Segment Reporting Information [Line Items]
Net revenues	4,183	3,341	3,557
Investment Banking [Member]
Segment Reporting Information [Line Items]
Net revenues	7,371	6,273	7,027
Operating expenses	3,526	3,437	3,713
Pre-tax earnings	3,845	2,836	3,314
Total assets	2,202	1,824	2,564
Institutional Client Services - Fixed Income, Currency and Commodities Client Execution [Member]
Segment Reporting Information [Line Items]
Net revenues	5,299	7,556	7,322
Institutional Client Services - Equities Client Execution [Member]
Segment Reporting Information [Line Items]
Net revenues	2,046	2,194	3,028
Institutional Client Services - Commissions and Fees [Member]
Segment Reporting Information [Line Items]
Net revenues	2,920	3,078	3,156
Institutional Client Services - Securities Services [Member]
Segment Reporting Information [Line Items]
Net revenues	1,637	1,639	1,645
Institutional Client Services - Equities [Member]
Segment Reporting Information [Line Items]
Net revenues	6,603	6,911	7,829
Institutional Client Services [Member]
Segment Reporting Information [Line Items]
Net revenues	11,902	14,467	15,151
Operating expenses	9,692	9,713	13,938
Pre-tax earnings	2,210	4,754	1,213
Total assets	675,255	645,689	663,394
Investing and Lending - Equity Securities [Member]
Segment Reporting Information [Line Items]
Net revenues	4,578	2,573	3,781
Investing and Lending - Debt Securities and Loans [Member]
Segment Reporting Information [Line Items]
Net revenues	2,003	1,507	1,655
Investing and Lending [Member]
Segment Reporting Information [Line Items]
Net revenues	6,581	4,080	5,436
Operating expenses	2,796	2,386	2,402
Pre-tax earnings	3,785	1,694	3,034
Total assets	226,016	198,181	179,428
Investment Management - Management and Other Fees [Member]
Segment Reporting Information [Line Items]
Net revenues	5,144	4,798	4,887
Investment Management - Incentive Fees [Member]
Segment Reporting Information [Line Items]
Net revenues	417	421	780
Investment Management - Transaction Revenues [Member]
Segment Reporting Information [Line Items]
Net revenues	658	569	539
Investment Management [Member]
Segment Reporting Information [Line Items]
Net revenues	6,219	5,788	6,206
Operating expenses	4,800	4,654	4,841
Pre-tax earnings	1,419	1,134	1,365
Total assets	$ 13,303	$ 14,471	$ 16,009

Business Segments - Segment 185

Business Segments - Segment Operating Results (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Charitable contributions included in operating expenses	$ 127	$ 114	$ 148
Net provisions for litigations and regulatory proceedings	$ 188	$ 396	4,010
Residential Mortgage Backed Securities Working Group [Member]
Segment Reporting Information [Line Items]
Net provisions for litigations and regulatory proceedings			$ 3,370

Business Segments - Net Interes

Business Segments - Net Interest Income (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Total net interest income	$ 2,932	$ 2,587	$ 3,064
Investment Banking [Member]
Segment Reporting Information [Line Items]
Total net interest income	0	0	0
Institutional Client Services [Member]
Segment Reporting Information [Line Items]
Total net interest income	1,322	1,456	2,472
Investing and Lending [Member]
Segment Reporting Information [Line Items]
Total net interest income	1,325	880	418
Investment Management [Member]
Segment Reporting Information [Line Items]
Total net interest income	$ 285	$ 251	$ 174

Business Segments - Depreciatio

Business Segments - Depreciation and Amortization (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Depreciation and amortization	$ 1,152	$ 998	$ 991
Investment Banking [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	124	126	123
Institutional Client Services [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	514	489	462
Investing and Lending [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	314	215	253
Investment Management [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	$ 200	$ 168	$ 153

Business Segments - Net Revenue

Business Segments - Net Revenues, Pre-Tax Earnings and Net Earnings for Each Geographic Region (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Net revenues	$ 32,073	$ 30,608	$ 33,820
Pre-tax earnings	11,132	10,304	8,778
Pre-tax earnings - subtotal	11,259	10,418	8,926
Net earnings	4,286	7,398	6,083
Net earnings - subtotal	$ 4,382	$ 7,477	$ 6,187
Percentage of total net revenues	100.00%	100.00%	100.00%
Percentage of total pre-tax earnings - subtotal	100.00%	100.00%	100.00%
Percentage of total net earnings - subtotal	100.00%	100.00%	100.00%
Americas [Member]
Segment Reporting Information [Line Items]
Net revenues	$ 19,405	$ 18,144	$ 19,202
Pre-tax earnings	7,119	6,352	3,359
Net earnings	$ 997	$ 4,337	$ 1,587
Percentage of total net revenues	61.00%	60.00%	56.00%
Percentage of total pre-tax earnings - subtotal	63.00%	61.00%	37.00%
Percentage of total net earnings - subtotal	23.00%	58.00%	26.00%
Europe, Middle East and Africa [Member]
Segment Reporting Information [Line Items]
Net revenues	$ 7,852	$ 8,040	$ 8,981
Pre-tax earnings	2,583	2,883	3,364
Net earnings	$ 2,144	$ 2,270	$ 2,914
Percentage of total net revenues	24.00%	26.00%	27.00%
Percentage of total pre-tax earnings - subtotal	23.00%	28.00%	38.00%
Percentage of total net earnings - subtotal	49.00%	30.00%	47.00%
Asia [Member]
Segment Reporting Information [Line Items]
Net revenues	$ 4,816	$ 4,424	$ 5,637
Pre-tax earnings	1,557	1,183	2,203
Net earnings	$ 1,241	$ 870	$ 1,686
Percentage of total net revenues	15.00%	14.00%	17.00%
Percentage of total pre-tax earnings - subtotal	14.00%	11.00%	25.00%
Percentage of total net earnings - subtotal	28.00%	12.00%	27.00%
Corporate [Member]
Segment Reporting Information [Line Items]
Pre-tax earnings	$ (127)	$ (114)	$ (148)
Net earnings	$ (96)	$ (79)	$ (104)

Business Segments - Net Reve189

Business Segments - Net Revenues, Pre-Tax Earnings and Net Earnings for Each Geographic Region (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Tax legislation estimated impact, increase in income tax expense	$ 4,400
Net provisions for litigations and regulatory proceedings	$ 188	$ 396	$ 4,010
Residential Mortgage Backed Securities Working Group [Member]
Segment Reporting Information [Line Items]
Net provisions for litigations and regulatory proceedings			$ 3,370

Credit Concentrations - Credit

Credit Concentrations - Credit Concentration, Government and Federal Agency Obligations (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
U.S. Government and Agency Obligations Held By The Firm [Member]
Concentration Risk [Line Items]
Concentration risk, Credit risk, Financial instrument, Maximum exposure	$ 76,418	$ 57,657
Concentration risk, Credit risk, Financial instrument, Maximum exposure, As a percentage of total Assets	8.30%	6.70%
Non-U.S. Government and Agency Obligations Held By The Firm [Member]
Concentration Risk [Line Items]
Concentration risk, Credit risk, Financial instrument, Maximum exposure	$ 33,956	$ 29,381
Concentration risk, Credit risk, Financial instrument, Maximum exposure, As a percentage of total Assets	3.70%	3.40%

Credit Concentrations - Additio

Credit Concentrations - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Concentration Risk [Line Items]
Cash deposits held at central banks	$ 76,130	$ 94,720
GS Bank USA [Member]
Concentration Risk [Line Items]
Cash deposits held at the Federal Reserve Bank of New York	$ 50,860	$ 74,240

Credit Concentrations - Cred192

Credit Concentrations - Credit Concentration, Resale Agreements and Securities Borrowed (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
U.S. Government and Agency Obligations that Collateralize Securities Purchased Under Agreements to Resell and Securities Borrowed [Member]
Concentration Risk [Line Items]
Concentration risk, Credit risk, Financial instrument, Maximum exposure	$ 96,905	$ 89,721
Non-U.S. Government and Agency Obligations that Collateralize Securities Purchased Under Agreements to Resell and Securities Borrowed [Member]
Concentration Risk [Line Items]
Concentration risk, Credit risk, Financial instrument, Maximum exposure	$ 92,850	$ 80,234

Legal Proceedings - Additional

Legal Proceedings - Additional Information (Detail) CAD in Millions, $ in Millions	Dec. 31, 2017USD ($)shares	Dec. 31, 2017CADshares
Other Commitments [Line Items]
Estimated aggregate amount of reasonably possible losses for legal proceedings	$ 1,500
Mortgage Related Matters [Member]
Other Commitments [Line Items]
Mortgage-Related Matters. Face amount of securitizations claimed for repurchase	1,700
Cobalt International Energy Securities Litigation [Member] | February 2012 Common Stock Offering [Member]
Other Commitments [Line Items]
Aggregate value of offering	$ 1,670
Number of shares underwritten by GS&Co. in connection with the offering | shares	16,594,500	16,594,500
Aggregate value underwritten by GS&Co.	$ 465
Cobalt International Energy Securities Litigation [Member] | December 2012 Convertible Notes Offering [Member]
Other Commitments [Line Items]
Aggregate value of offering	1,380
Approximate principal amount of notes underwritten by GS&Co.	690
Cobalt International Energy Securities Litigation [Member] | January 2013 Common Stock Offering [Member]
Other Commitments [Line Items]
Aggregate value of offering	1,000
Cobalt International Energy Securities Litigation [Member] | May 2013 Common Stock Offering [Member]
Other Commitments [Line Items]
Aggregate value of offering	1,330
Cobalt International Energy Securities Litigation [Member] | May 2014 Convertible Notes Offering [Member]
Other Commitments [Line Items]
Aggregate value of offering	1,300
Approximate principal amount of notes underwritten by GS&Co.	508
Cobalt International Energy Securities Litigation [Member] | February 2012, December 2012 and May 2014 Offerings [Member]
Other Commitments [Line Items]
Aggregate value underwritten by GS&Co.	1,660
TerraForm Global Securities Litigation [Member] | Common Stock Offering [Member]
Other Commitments [Line Items]
Aggregate value of offering	$ 675
Number of shares underwritten by GS&Co. in connection with the offering | shares	2,340,000	2,340,000
Aggregate value underwritten by GS&Co.	$ 35
TerraForm Global Securities Litigation [Member] | Class D Units [Member]
Other Commitments [Line Items]
Aggregate value of offering	335
TerraForm Global Securities Litigation [Member] | Senior Notes Offering [Member]
Other Commitments [Line Items]
Aggregate principal amount of notes	810
Approximate principal amount of notes sold by GS&Co.	49
SunEdison Securities Litigation [Member] | Convertible Preferred Stock Offering [Member]
Other Commitments [Line Items]
Aggregate value of offering	$ 650
Number of shares underwritten by GS&Co. in connection with the offering | shares	138,890	138,890
Aggregate value underwritten by GS&Co.	$ 139
Adeptus Health Securities Litigation [Member] | June 2014 initial public offering [Member]
Other Commitments [Line Items]
Aggregate value of offering	$ 124
Number of shares underwritten by GS&Co. in connection with the offering | shares	1,690,000	1,690,000
Aggregate value underwritten by GS&Co.	$ 37
Adeptus Health Securities Litigation [Member] | May 2015 Secondary Equity Offering [Member]
Other Commitments [Line Items]
Aggregate value of offering	$ 154
Number of shares underwritten by GS&Co. in connection with the offering | shares	962,378	962,378
Aggregate value underwritten by GS&Co.	$ 61
Adeptus Health Securities Litigation [Member] | July 2015 secondary equity offering [Member]
Other Commitments [Line Items]
Aggregate value of offering	$ 411
Number of shares underwritten by GS&Co. in connection with the offering | shares	1,760,000	1,760,000
Aggregate value underwritten by GS&Co.	$ 184
Adeptus Health Securities Litigation [Member] | June 2016 secondary equity offering [Member]
Other Commitments [Line Items]
Aggregate value of offering	175
Aggregate value underwritten by GS&Co.	175
Valeant Pharmaceuticals International Securities Litigation [Member] | June 2013 Public Offering [Member]
Other Commitments [Line Items]
Aggregate value of offering	$ 2,300
Number of shares underwritten by GS&Co. and GS Canada in connection with the offering | shares	5,334,897	5,334,897
Aggregate value underwritten by GS&Co. and GS Canada	$ 453
Valeant Pharmaceuticals International Securities Litigation [Member] | June 2013 Senior Notes Offering [Member]
Other Commitments [Line Items]
Aggregate principal amount of notes	3,200
Valeant Pharmaceuticals International Securities Litigation [Member] | November 2013 Senior Notes Offering [Member]
Other Commitments [Line Items]
Aggregate principal amount of notes	900
Valeant Pharmaceuticals International Securities Litigation [Member] | June 2013 and November 2013 Senior Notes Offerings [Member] | Non-US [Member]
Other Commitments [Line Items]
Approximate principal amount of notes sold by GS&Co. and GS Canada | CAD		CAD 14.2
Snap Inc. [Member] | March 2017 Initial Public Offering [Member]
Other Commitments [Line Items]
Aggregate value of offering	$ 3,910
Number of shares underwritten by GS&Co. in connection with the offering | shares	57,040,000	57,040,000
Aggregate value underwritten by GS&Co.	$ 970

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Defined benefit plan amounts recognized in other assets	$ 346	$ 72
Defined benefit plan amounts recognized in other liabilities and accrued expenses	606	592
Contribution to employer-sponsored U.S. and non-U.S. defined contribution plans	$ 257	$ 236	$ 231

Employee Incentive Plans - Addi

Employee Incentive Plans - Additional Information (Detail) - USD ($) shares in Millions, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Post-vesting and delivery transfer restriction through date for RSU and restricted stock awards granted or delivered subsequent to year end		January 2,023
Unrecognized compensation costs related to nonvested share-based compensation arrangements		$ 386
Period over which unrecognized compensation costs related to nonvested share-based compensation arrangements will be recognized		1 year 9 months 25 days
Scenario, Forecast [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units granted subsequent to year end	5.7
Unvested restricted stock units granted subsequent to year end	2.9
Scenario, Forecast [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock delivery net of required withholding tax subsequent to year end	1.2
2015 SIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant under the 2015 SIP		73

Employee Incentive Plans - Sche

Employee Incentive Plans - Schedule of Restricted Stock Units, Vested and Expected to Vest (Detail)	12 Months Ended
	Dec. 31, 2017$ / sharesshares
Future Service Required [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning balance of restricted stock units outstanding | shares	5,623,239
Restricted stock units granted | shares	3,764,395
Restricted stock units forfeited | shares	(466,715)
Restricted stock units vested | shares	4,797,337
Ending balance of restricted stock units outstanding | shares	4,123,582
Beginning balance of restricted stock units outstanding, Weighted average grant-date fair value | $ / shares	$ 147.25
Restricted stock units granted, Weighted average grant-date fair value | $ / shares	208.24
Restricted stock units forfeited, Weighted average grant-date fair value | $ / shares	167.02
Restricted stock units vested, Weighted average grant-date fair value | $ / shares	162.88
Ending balance of restricted stock units outstanding, Weighted average grant-date fair value | $ / shares	$ 182.50
No Future Service Required [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning balance of restricted stock units outstanding | shares	22,202,431
Restricted stock units granted | shares	5,235,283
Restricted stock units forfeited | shares	(260,762)
Restricted stock units delivered | shares	17,811,461
Restricted stock units vested | shares	4,797,337
Ending balance of restricted stock units outstanding | shares	14,162,828
Beginning balance of restricted stock units outstanding, Weighted average grant-date fair value | $ / shares	$ 145.97
Restricted stock units granted, Weighted average grant-date fair value | $ / shares	205.91
Restricted stock units forfeited, Weighted average grant-date fair value | $ / shares	164.06
Restricted stock units delivered, Weighted average grant-date fair value | $ / shares	151.72
Restricted stock units vested, Weighted average grant-date fair value | $ / shares	162.88
Ending balance of restricted stock units outstanding, Weighted average grant-date fair value | $ / shares	$ 166.30

Employee Incentive Plans - S197

Employee Incentive Plans - Schedule of Restricted Stock Units, Vested and Expected to Vest (Parenthetical) (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units granted, Weighted average grant-date fair value	$ 206.88	$ 135.92	$ 160.19
Share-based Compensation, Liquidity discount RSUs	10.70%	10.50%	9.20%
Restricted stock units, post-vesting transfer restrictions period	4 years
Share-based compensation arrangement by Share-based payment award, Equity instruments other than options, Vested in period, Total fair value	$ 2,140	$ 2,260	$ 2,400
Restricted stock subject to future service	3,298	39,957
No Future Service Required [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs outstanding	14,162,828	22,202,431
RSUs subject to performance conditions [Member] | No Future Service Required [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs outstanding	62,023	0

Employee Incentive Plans - S198

Employee Incentive Plans - Schedule of Stock Options Activity (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Employee Incentive Plans - Stock Options
Options Outstanding	2,100	7,960
Stock options outstanding, exercise price	$ 78.78
Stock options outstanding, weighted average exercise price		$ 123.36
Stock options outstanding, Aggregate intrinsic value	$ 370	$ 924
Stock options outstanding, remaining life	1 year
Stock options outstanding, weighted average remaining life		1 year 7 months 10 days
Stock options exercised	5,860
Total intrinsic value of options exercised	$ 589	$ 436	$ 531
Option One [Member]
Employee Incentive Plans - Stock Options
Options Outstanding		5,130
Stock options outstanding, exercise price		$ 78.78
Stock options outstanding, remaining life		2 years
Option Two [Member]
Employee Incentive Plans - Stock Options
Options Outstanding		2,830
Stock options outstanding, exercise price		$ 204.16
Stock options outstanding, remaining life		11 months 1 day

Employee Incentive Plans - Empl

Employee Incentive Plans - Employee Service Share-based Compensation, Tax Benefit from Compensation Expense (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-based compensation	$ 1,812	$ 2,170	$ 2,304
Excess net tax benefit for options exercised	139	79	134
Excess net tax benefit for share-based awards	$ 719	$ 147	$ 406

Parent Company - Group Statemen

Parent Company - Group Statement of Earnings (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues
Total non-interest revenues	$ 29,141	$ 28,021	$ 30,756
Interest income	13,113	9,691	8,452
Interest expense	10,181	7,104	5,388
Net interest loss	2,932	2,587	3,064
Net revenues, including net interest loss	32,073	30,608	33,820
Operating expenses
Compensation and benefits	11,853	11,647	12,678
Other expenses	2,213	2,168	5,699
Total operating expenses	20,941	20,304	25,042
Pre-tax earnings	11,132	10,304	8,778
Provision/(benefit) for taxes	6,846	2,906	2,695
Net earnings	4,286	7,398	6,083
Preferred stock dividends	601	311	515
Net earnings applicable to common shareholders	3,685	7,087	5,568
Group Inc. [Member]
Revenues
Dividends from bank subsidiaries and other affiliates	550	53	32
Dividends from nonbank subsidiaries and other affiliates	11,016	5,465	3,181
Other revenues	(384)	155	(132)
Total non-interest revenues	11,182	5,673	3,081
Interest income	4,638	4,140	3,519
Interest expense	5,978	4,543	4,165
Net interest loss	(1,340)	(403)	(646)
Net revenues, including net interest loss	9,842	5,270	2,435
Operating expenses
Compensation and benefits	330	343	498
Other expenses	428	332	188
Total operating expenses	758	675	686
Pre-tax earnings	9,084	4,595	1,749
Provision/(benefit) for taxes	3,404	(518)	(828)
Undistributed earnings/(loss) of subsidiaries and other affiliates	(1,394)	2,285	3,506
Net earnings	4,286	7,398	6,083
Preferred stock dividends	601	311	515
Net earnings applicable to common shareholders	$ 3,685	$ 7,087	$ 5,568

Parent Company - Group State201

Parent Company - Group Statement of Earnings (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Condensed Income Statements, Captions [Line Items]
Tax legislation estimated impact, increase in income tax expense	$ 4,400
Group Inc. [Member]
Condensed Income Statements, Captions [Line Items]
Cash dividends from bank subsidiaries	525	$ 32	$ 14
Cash dividends from nonbank subsidiaries	7,980	3,460	2,290
Interest expense with subsidiaries	1,050	$ 201	$ 187
Tax legislation estimated impact, increase in income tax expense	$ 4,400

Parent Company - Group State202

Parent Company - Group Statement of Financial Condition (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Investments in subsidiaries and other affiliates:
Financial instruments owned (at fair value)	$ 315,988	$ 295,952
Other assets	28,346	25,481
Total assets	916,776	860,165	$ 861,395
Liabilities and shareholders' equity
Financial instruments sold, but not yet purchased (at fair value)	111,930	117,143
Unsecured long-term borrowings:
Other liabilities and accrued expenses	16,922	14,362
Total liabilities	834,533	773,272
Commitments, contingencies and guarantees
Shareholders' equity
Preferred stock	11,853	11,203
Common stock	9	9
Share-based awards	2,777	3,914
Additional paid-in capital	53,357	52,638
Retained earnings	91,519	89,039
Accumulated other comprehensive loss	(1,880)	(1,216)
Stock held in treasury, at cost	(75,392)	(68,694)
Total shareholders' equity	82,243	86,893	$ 86,728
Total liabilities and shareholders' equity	916,776	860,165
Group Inc. [Member]
Cash and cash equivalents:
With third-party banks	38	81
With subsidiary bank		3,000
Loans to and receivables from subsidiaries:
Bank	721	9,131
Nonbank	236,050	179,899
Investments in subsidiaries and other affiliates:
Bank	26,599	25,571
Nonbank	67,279	67,203
Financial instruments owned (at fair value)	10,248	4,524
Other assets	5,898	6,273
Total assets	346,833	295,682
Liabilities and shareholders' equity
Payables to subsidiaries	1,005	875
Financial instruments sold, but not yet purchased (at fair value)	254	775
Unsecured short-term borrowings:
With third parties (includes $2,484 and $3,256 at fair value)	31,871	27,159
With subsidiaries	25,699	999
Unsecured long-term borrowings:
With third parties (includes $18,207 and $17,591 at fair value)	190,502	172,164
With subsidiaries	11,068	5,233
Other liabilities and accrued expenses	4,191	1,584
Total liabilities	264,590	208,789
Commitments, contingencies and guarantees	0	0
Shareholders' equity
Preferred stock	11,853	11,203
Common stock	9	9
Share-based awards	2,777	3,914
Additional paid-in capital	53,357	52,638
Retained earnings	91,519	89,039
Accumulated other comprehensive loss	(1,880)	(1,216)
Stock held in treasury, at cost	(75,392)	(68,694)
Total shareholders' equity	82,243	86,893
Total liabilities and shareholders' equity	$ 346,833	$ 295,682

Parent Company - Group State203

Parent Company - Group Statement of Financial Condition (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Condensed Balance Sheet Statements, Captions [Line Items]
Unsecured short-term borrowings, including the current portion of unsecured long-term borrowings, at fair value	$ 16,904	$ 14,792
Group Inc. [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Unsecured short-term borrowings, including the current portion of unsecured long-term borrowings, at fair value	2,484	3,256
Unsecured long-term borrowings at fair value	18,207	17,591
Derivative contracts with subsidiaries included in Financial instruments owned	570	$ 1,080
2,019	10,550
2,020	121
2,021	58
2,022	21
2023-thereafter	$ 323

Parent Company - Condensed Cons

Parent Company - Condensed Consolidated Statements of Cash Flows (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities
Net earnings	$ 4,286	$ 7,398	$ 6,083
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	1,152	998	991
Deferred income taxes	5,458	551	425
Share-based compensation	1,769	2,111	2,272
Loss/(gain) related to extinguishment of subordinated borrowings	(114)	3	(34)
Changes in operating assets and liabilities:
Financial instruments owned (excluding available-for-sale securities)	(11,327)	15,253	16,078
Financial instruments sold, but not yet purchased	(5,296)	1,960	(16,835)
Other, net	6,387	(5,639)	(3,806)
Net cash provided by/(used for) operating activities	(17,742)	6,900	9,481
Cash flows from investing activities
Purchase of property, leasehold improvements and equipment	(3,185)	(2,876)	(1,833)
Purchase of investments	(9,853)
Net cash provided by/(used for) investing activities	(29,116)	9,270	(18,574)
Cash flows from financing activities
Purchase of APEX, senior guaranteed securities and trust preferred securities	(850)
Common stock repurchased	(6,772)	(6,078)	(4,135)
Settlement of share-based awards in satisfaction of withholding tax requirements	(2,223)	(1,128)	(1,204)
Dividends and dividend equivalents paid on common stock, preferred stock and share-basedawards	(1,769)	(1,706)	(1,681)
Proceeds from issuance of preferred stock, net of issuance costs	1,495	1,303	1,993
Proceeds from issuance of common stock, including exercise of share-based awards	7	6	259
Cash settlement of share-based awards	(3)		(2)
Net cash provided by financing activities	35,198	12,102	27,507
Net increase/(decrease) in cash and cash equivalents	(11,660)	28,272	18,414
Cash and cash equivalents, beginning balance	121,711	93,439	75,025
Cash and cash equivalents, ending balance	110,051	121,711	93,439
Group Inc. [Member]
Cash flows from operating activities
Net earnings	4,286	7,398	6,083
Adjustments to reconcile net earnings to net cash provided by operating activities:
Undistributed (earnings)/loss of subsidiaries and other affiliates	1,394	(2,285)	(3,506)
Depreciation and amortization	56	52	50
Deferred income taxes	4,358	134	86
Share-based compensation	152	193	178
Loss/(gain) related to extinguishment of subordinated borrowings	(114)	3	(34)
Changes in operating assets and liabilities:
Financial instruments owned (excluding available-for-sale securities)	(309)	(1,580)	(620)
Financial instruments sold, but not yet purchased	(521)	332	274
Other, net	(757)	337	1,555
Net cash provided by/(used for) operating activities	8,545	4,584	4,066
Cash flows from investing activities
Purchase of property, leasehold improvements and equipment	(66)	(79)	(33)
Issuances of short-term loans to subsidiaries, net	(14,415)	(3,994)	(24,417)
Issuance of term loans to subsidiaries	(42,234)	(28,498)	(8,632)
Repayments of term loans by subsidiaries	22,039	32,265	24,196
Purchase of investments	(6,491)
Capital distributions from/(contributions to) subsidiaries, net	388	(3,265)	(1,500)
Net cash provided by/(used for) investing activities	(40,779)	(3,571)	(10,386)
Cash flows from financing activities
Unsecured short-term borrowings, net: With third parties	(424)	(178)	(1,570)
Unsecured short-term borrowings, net: With subsidiaries	23,078	2,290	(1,114)
Proceeds from issuance of long-term borrowings	43,917	40,708	42,795
Repayment of long-term borrowings, including the current portion	(27,028)	(33,314)	(27,726)
Purchase of APEX, senior guaranteed securities and trust preferred securities	(237)	(1,171)	(1)
Preferred stock redemption	(850)
Common stock repurchased	(6,772)	(6,078)	(4,135)
Settlement of share-based awards in satisfaction of withholding tax requirements	(2,223)	(1,128)	(1,204)
Dividends and dividend equivalents paid on common stock, preferred stock and share-basedawards	(1,769)	(1,706)	(1,681)
Proceeds from issuance of preferred stock, net of issuance costs	1,495	1,303	1,993
Proceeds from issuance of common stock, including exercise of share-based awards	7	6	259
Cash settlement of share-based awards	(3)		(2)
Net cash provided by financing activities	29,191	732	7,614
Net increase/(decrease) in cash and cash equivalents	(3,043)	1,745	1,294
Cash and cash equivalents, beginning balance	3,081	1,336	42
Cash and cash equivalents, ending balance	$ 38	$ 3,081	$ 1,336

Parent Company - Condensed C205

Parent Company - Condensed Consolidated Statements of Cash Flows (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
SUPPLEMENTAL DISCLOSURES:
Cash payments for interest, net of capitalized interest	$ 11,170	$ 7,140	$ 4,820
Cash payments for income taxes, net of refunds	1,420	1,060	2,650
Group Inc. [Member]
SUPPLEMENTAL DISCLOSURES:
Cash payments for interest, net of capitalized interest	6,310	4,910	3,700
Cash payments for income taxes, net of refunds	$ 297	$ 61	$ 1,280

Parent Company - Additional Inf

Parent Company - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Parent Company Only Financial Information [Line Items]
Trust Preferred Securities and common beneficial interests exchanged with the firm's junior subordinated debt	$ 237		$ 262
Firm's Junior subordinated debt exchanged for Trust Preferred Securities and common beneficial interests	248		296
APEX exchanged, fair value		$ 1,040
Series E and Series F Preferred Stock cancelled, net carrying value		1,310
Senior guaranteed trust securities exchanged with the firm's junior subordinated debt		127
Firm's Junior subordinated debt exchanged with senior guaranteed trust securities		124
Group Inc. [Member]
Parent Company Only Financial Information [Line Items]
Loans to and receivables from subsidiaries exchanged for Unsecured subordinated note from subsidiary	84,000
Unsecured subordinated note from subsidiary received in exchange for Loans to and receivables from subsidiaries	84,000
Loan to subsidiary received in exchange for equity interest in subsidiary	750
Equity interest in subsidiary exchanged for loan to subsidiary	750
Trust Preferred Securities and common beneficial interests exchanged with the firm's junior subordinated debt	237		262
Firm's Junior subordinated debt exchanged for Trust Preferred Securities and common beneficial interests	$ 248		296
APEX exchanged, fair value		1,040
Series E and Series F Preferred Stock cancelled, net carrying value		1,310
Senior guaranteed trust securities exchanged with the firm's junior subordinated debt		127
Firm's Junior subordinated debt exchanged with senior guaranteed trust securities		$ 124
Financial instruments owned, at fair value, exchanged for loans to and equity in certain subsidiaries			6,120
Loans to certain subsidiaries exchanged for financial instruments owned, at fair value			5,200
Equity in certain subsidiaries exchanged for financial instruments owned, at fair value			$ 918