State Street (STT) 10-Q 2 May 24 2024 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Mar. 31, 2024	Apr. 30, 2024
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2024
Document Transition Report	false
Entity File Number	001-07511
Entity Registrant Name	STATE STREET CORPORATION
Entity Incorporation, State or Country Code	MA
Entity Tax Identification Number	04-2456637
Entity Address, Address Line One	One Congress Street
Entity Address, City or Town	Boston,
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02114
City Area Code	(617)
Local Phone Number	786-3000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		301,258,872
Entity Central Index Key	0000093751
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Amendment Flag	false
Common Stock
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, $1 par value per share
Trading Symbol	STT
Security Exchange Name	NYSE
Series G Preferred Stock, Depository Share
Entity Information [Line Items]
Title of 12(b) Security	Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series G, without par value per share
Trading Symbol	STT.PRG
Security Exchange Name	NYSE

Consolidated Statement of Incom

Consolidated Statement of Income - USD ($) shares in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Fee revenue:
Servicing fees	$ 1,228,000,000	$ 1,217,000,000
Management fees	510,000,000	457,000,000
Foreign exchange trading services	331,000,000	342,000,000
Securities finance	96,000,000	109,000,000
Software and processing fees	207,000,000	165,000,000
Other fee revenue	50,000,000	45,000,000
Total fee revenue	2,422,000,000	2,335,000,000
Net interest income:
Interest income	2,889,000,000	2,027,000,000
Interest expense	2,173,000,000	1,261,000,000
Net interest income	716,000,000	766,000,000
Total revenue	3,138,000,000	3,101,000,000
Provision for credit losses	27,000,000	44,000,000
Expenses:
Compensation and employee benefits	1,252,000,000	1,292,000,000
Information systems and communications	432,000,000	414,000,000
Transaction processing services	248,000,000	239,000,000
Occupancy	103,000,000	94,000,000
Amortization of other intangible assets	60,000,000	60,000,000
Other	418,000,000	270,000,000
Total expenses	2,513,000,000	2,369,000,000
Income before income tax expense	598,000,000	688,000,000
Income tax expense	135,000,000	139,000,000
Net income	463,000,000	549,000,000
Net income available to common shareholders, basic	418,000,000	525,000,000
Net income available to common shareholders, diluted	$ 418,000,000	$ 525,000,000
Earnings per common share:
Basic (in USD per share)	$ 1.38	$ 1.54
Diluted (in USD per share)	$ 1.37	$ 1.52
Average common shares outstanding (in thousands):
Basic (in shares)	301,991	341,106
Diluted (in shares)	305,943	345,472
Cash dividends declared (in USD per share)	$ 0.69	$ 0.63

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 463	$ 549
Other comprehensive income (loss), net of related taxes:
Foreign currency translation, net of related taxes of $53 and ($12), respectively	(107)	130
Net unrealized gains (losses) on available-for-sale securities, net of reclassification adjustment and net of related taxes of $70 and $92, respectively	198	246
Net unrealized gains (losses) on cash flow hedges, net of related taxes of ($41) and $19, respectively	(113)	51
Net unrealized gains on retirement plans, net of related taxes of $3 and $5, respectively	7	12
Other comprehensive income (loss)	(15)	439
Total comprehensive income (loss)	$ 448	$ 988

Consolidated Statement of Com_2

Consolidated Statement of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Foreign currency translation, taxes	$ 53	$ (12)
Change in net unrealized gains (losses) on available-for-sale securities, taxes	70	92
Change in net unrealized gains (losses) on cash flow hedges, taxes	(41)	19
Change in unrealized gains (losses) on retirement plans, taxes	$ 3	$ 5

Consolidated Statement of Condi

Consolidated Statement of Condition - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Assets:
Cash and due from banks	$ 3,413	$ 4,047
Interest-bearing deposits with banks	125,486	87,665
Securities purchased under resale agreements	7,489	6,692
Trading account assets	760	773
Investment securities available-for-sale (less allowance for credit losses of $0 and $0)	48,640	44,526
Investment securities held-to-maturity (less allowance for credit losses of $1 and $1) (fair value of $46,823 and $51,503)	52,914	57,117
Loans (less allowance for credit losses on loans of $135 and $135)	38,500	36,496
Premises and equipment (net of accumulated depreciation of $6,193 and $6,062)	2,479	2,399
Accrued interest and fees receivable	4,014	3,806
Goodwill	7,582	7,611
Other intangible assets	1,258	1,320
Other assets	45,468	44,806
Total assets	338,003	297,258
Deposits:
Non-interest-bearing	37,367	32,569
Interest-bearing - U.S.	148,485	121,738
Interest-bearing - non-U.S.	66,032	66,663
Total deposits	251,884	220,970
Securities sold under repurchase agreements	3,576	1,867
Other short-term borrowings	11,541	3,660
Accrued expenses and other liabilities	26,823	28,123
Long-term debt	19,746	18,839
Total liabilities	313,570	273,459
Commitments, guarantees and contingencies (Notes 9 and 10)
Shareholders’ equity:
Common stock, $1 par, 750,000,000 shares authorized:	504	504
Surplus	10,724	10,741
Retained earnings	28,166	27,957
Accumulated other comprehensive income (loss)	(2,369)	(2,354)
Treasury stock, at cost (202,375,172 and 201,935,599 shares)	(15,060)	(15,025)
Total shareholders’ equity	24,433	23,799
Total liabilities and shareholders' equity	338,003	297,258
Series D Preferred Stock
Shareholders’ equity:
Preferred stock, no par, 3,500,000 shares authorized:	0	742
Series F Preferred Stock
Shareholders’ equity:
Preferred stock, no par, 3,500,000 shares authorized:	0	247
Series G Preferred Stock
Shareholders’ equity:
Preferred stock, no par, 3,500,000 shares authorized:	493	493
Series H Preferred Stock
Shareholders’ equity:
Preferred stock, no par, 3,500,000 shares authorized:	494	494
Series I Preferred Stock
Shareholders’ equity:
Preferred stock, no par, 3,500,000 shares authorized:	$ 1,481	$ 0

Consolidated Statement of Con_2

Consolidated Statement of Condition (Parenthetical) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Assets:
Allowance for credit losses on available-for-sale securities	$ 0	$ 0
Allowance for credit losses on HTM investment securities	1,000,000	1,000,000
Investment securities held-to-maturity	46,823,000,000	51,503,000,000
Allowance for credit losses on loans	135,000,000	135,000,000
Accumulated depreciation	$ 6,193,000,000	$ 6,062,000,000
Shareholders’ equity:
Preferred stock, no par value (in dollars per share)	$ 0	$ 0
Preferred stock authorized (in shares)	3,500,000	3,500,000
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	750,000,000	750,000,000
Common stock, shares issued (in shares)	503,879,642	503,879,642
Common stock, shares outstanding (in shares)	301,504,470	301,944,043
Treasury stock (in shares)	202,375,172	201,935,599
Series D Preferred Stock
Shareholders’ equity:
Preferred stock, shares issued (in shares)	7,500	7,500
Preferred stock, shares outstanding (in shares)	7,500	7,500
Series F Preferred Stock
Shareholders’ equity:
Preferred stock, shares issued (in shares)	2,500	2,500
Preferred stock, shares outstanding (in shares)	2,500	2,500
Series G Preferred Stock
Shareholders’ equity:
Preferred stock, shares issued (in shares)	5,000	5,000
Preferred stock, shares outstanding (in shares)	5,000	5,000
Series H Preferred Stock
Shareholders’ equity:
Preferred stock, shares issued (in shares)	5,000	5,000
Preferred stock, shares outstanding (in shares)	5,000	5,000
Series I Preferred Stock
Shareholders’ equity:
Preferred stock, shares issued (in shares)	15,000	15,000
Preferred stock, shares outstanding (in shares)	15,000	15,000

Consolidated Statement of Chang

Consolidated Statement of Changes in Shareholders' Equity - USD ($) $ in Millions	Total	Preferred Stock	Common Stock	Surplus	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Beginning balance at Dec. 31, 2022	$ 25,191	$ 1,976	$ 504	$ 10,730	$ 27,028	$ (3,711)	$ (11,336)
Beginning balance (shares) at Dec. 31, 2022			503,880,000
Treasury stock, beginning balance (in shares) at Dec. 31, 2022							154,855,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	549				549
Other comprehensive income (loss)	439					439
Cash dividends declared:
Common stock dividends	(212)				(212)
Preferred stock cash dividends	(23)				(23)
Common stock awards exercised	69			(6)			$ 75
Common stock awards exercised (in shares)							(1,085,000)
Other	(1)						$ (1)
Other (shares)							1,000
Ending balance at Mar. 31, 2023	24,750	1,976	$ 504	10,724	27,342	(3,272)	$ (12,524)
Ending balance (shares) at Mar. 31, 2023			503,880,000
Treasury stock, ending balance (in shares) at Mar. 31, 2023							167,418,000
Beginning balance at Dec. 31, 2023	$ 23,799	$ 1,976	$ 504	10,741	27,957	(2,354)	$ (15,025)
Beginning balance (shares) at Dec. 31, 2023			503,880,000
Treasury stock, beginning balance (in shares) at Dec. 31, 2023	201,935,599						201,936,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 463				463
Other comprehensive income (loss)	(15)					(15)
Preferred stock issued (shares)		1,481,000,000
Preferred stock issued	1,481
Preferred stock redeemed	(1,000)	$ (989)			(11)
Cash dividends declared:
Common stock dividends	(208)				(208)
Preferred stock cash dividends	(34)				(34)
Common stock acquired	(100)						$ (100)
Common stock acquired (shares)							1,365,000
Common stock awards exercised	49			(17)			$ 66
Common stock awards exercised (in shares)							(926,000)
Other	(2)				(1)		$ (1)
Ending balance at Mar. 31, 2024	$ 24,433	$ 2,468	$ 504	$ 10,724	$ 28,166	$ (2,369)	$ (15,060)
Ending balance (shares) at Mar. 31, 2024			503,880,000
Treasury stock, ending balance (in shares) at Mar. 31, 2024	202,375,172						202,375,000

Consolidated Statement of Cha_2

Consolidated Statement of Changes in Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Stockholders' Equity [Abstract]
Cash dividends declared (in USD per share)	$ 0.69	$ 0.63

Consolidated Statement of Cash

Consolidated Statement of Cash Flows - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Operating Activities:
Net income	$ 463,000,000	$ 549,000,000
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income tax	8,000,000	32,000,000
Amortization of other intangible assets	60,000,000	60,000,000	$ 239,000,000
Other non-cash adjustments for depreciation, amortization and accretion, net	121,000,000	171,000,000
Provision for credit losses	27,000,000	44,000,000
Change in trading account assets, net	13,000,000	(45,000,000)
Change in accrued interest and fees receivable, net	(206,000,000)	(136,000,000)
Change in collateral deposits, net	(575,000,000)	(2,962,000,000)
Change in unrealized (gains) losses on foreign exchange derivatives, net	(4,251,000,000)	(156,000,000)
Change in other assets, net	1,176,000,000	282,000,000
Change in accrued expenses and other liabilities, net	2,219,000,000	(796,000,000)
Other, net	101,000,000	95,000,000
Net cash provided by operating activities	(844,000,000)	(2,862,000,000)
Investing Activities:
Net (increase) decrease in interest-bearing deposits with banks	(37,821,000,000)	13,630,000,000
Net (increase) decrease in securities purchased under resale agreements	(797,000,000)	4,082,000,000
Proceeds from sales of available-for-sale securities	943,000,000	232,000,000
Proceeds from maturities of available-for-sale securities	4,484,000,000	3,436,000,000
Purchases of available-for-sale securities	(9,857,000,000)	(5,239,000,000)
Proceeds from maturities of held-to-maturity securities	4,144,000,000	1,363,000,000
Purchases of held-to-maturity securities	(3,000,000)	(1,557,000,000)
Sale of loans	53,000,000	273,000,000
Net (increase) in loans	(2,248,000,000)	(1,914,000,000)
Business acquisitions, net of cash acquired	(12,000,000)	0
Purchases of equity investments and other long-term assets	(31,000,000)	0
Purchases of premises and equipment, net	(230,000,000)	(182,000,000)
Other, net	23,000,000	188,000,000
Net cash (used in) provided by investing activities	(41,352,000,000)	14,312,000,000
Financing Activities:
Net (decrease) increase in time deposits	(2,127,000,000)	728,000,000
Net increase (decrease) in all other deposits	33,044,000,000	(12,560,000,000)
Net increase in securities sold under repurchase agreements	1,709,000,000	2,518,000,000
Net increase (decrease) in other short-term borrowings	7,881,000,000	(2,089,000,000)
Proceeds from issuance of long-term debt, net of issuance costs	996,000,000	1,244,000,000
Payments for long-term debt and obligations under finance leases	(12,000,000)	(11,000,000)
Payments for redemption of preferred stock	(1,000,000,000)	0
Proceeds from issuance of preferred stock, net of issuance costs	1,481,000,000	0
Repurchases of common stock	(119,000,000)	(1,250,000,000)
Repurchases of common stock for employee tax withholding	(42,000,000)	(59,000,000)
Payments for cash dividends	(243,000,000)	(243,000,000)
Other, net	(6,000,000)	0
Net cash provided by (used in) financing activities	41,562,000,000	(11,722,000,000)
Net decrease in cash and due from banks	(634,000,000)	(272,000,000)
Cash and due from banks at beginning of period	4,047,000,000	3,970,000,000	3,970,000,000
Cash and due from banks at end of period	3,413,000,000	3,698,000,000	$ 4,047,000,000
Supplemental disclosure:
Interest paid	1,989,000,000	1,212,000,000
Income taxes paid, net	$ 118,000,000	$ 75,000,000

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2024
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation The accounting and financial reporting policies of State Street Corporation conform to U.S. GAAP. State Street Corporation, the Parent Company, is a financial holding company headquartered in Boston, Massachusetts. Unless otherwise indicated or unless the context requires otherwise, all references in these notes to consolidated financial statements to “State Street,” “we,” “us,” “our” or similar references mean State Street Corporation and its subsidiaries on a consolidated basis, including our principal banking subsidiary, State Street Bank. The accompanying consolidated financial statements should be read in conjunction with the financial and risk factor information included in our 2023 Form 10-K, which we previously filed with the SEC. The consolidated financial statements accompanying these condensed notes are unaudited. In the opinion of management, all adjustments, consisting only of normal recurring adjustments, which are necessary for a fair statement of the consolidated results of operations in these financial statements, have been made. Certain previously reported amounts presented in this Form 10-Q have been reclassified to conform to current-period presentation. Events occurring subsequent to the date of our consolidated statement of condition were evaluated for potential recognition or disclosure in our consolidated financial statements through the date we filed this Form 10-Q with the SEC. The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions in the application of certain of our significant accounting policies that may materially affect the reported amounts of assets, liabilities, equity, revenue and expenses. As a result of unanticipated events or circumstances, actual results could differ from those estimates. These accounting estimates reflect the best judgment of management, but actual results could differ. Our consolidated statement of condition as of December 31, 2023 included in the accompanying consolidated financial statements was derived from the audited financial statements as of that date, but does not include all notes required by U.S. GAAP for a complete set of consolidated financial statements. Cash and Cash Equivalents Sanctions programs or government intervention may inhibit our ability to access cash and due from banks in certain accounts. For example, as of March 31, 2024 and December 31, 2023, we held such accounts in Russia that were subject to sanctions restrictions, inclusive of $0.6 billion and $1.5 billion, respectively, with our subcustodian, which is an affiliate of a large multinational bank, and with western European-based clearing agencies, for a total of approximately $1.1 billion and $1.9 billion, respectively. The reduction in balances with our subcustodian in Russia was a result of various actions taken related to our contractual arrangements that resulted in the derecognition of certain cash balances and related client liabilities. Cash and due from banks is evaluated as part of our allowance for credit losses. Recent Accounting Developments Relevant standards that were recently issued but not yet adopted as of March 31, 2024: Standard Description Effective Date Effects on the financial statements or other significant matters ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures The amendments related to the rate reconciliation and income taxes paid disclosures and require disclosures of (1) consistent categories and greater disaggregation of information in the rate reconciliation and (2) income taxes paid disaggregated by jurisdiction. Additional amendments require (1) disclosures of pretax income (or loss) and income tax expense (or benefit) to be consistent with U.S. Securities and Exchange Commission regulations, and (2) remove disclosures that no longer are considered cost beneficial or relevant. Annual reporting for period ending December 31, 2025 We are currently evaluating the disclosure impact of the new standard. ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures The amendments enhance segment reporting by expanding the breadth and frequency of segment disclosures, including disclosure of (1) significant segment expenses, (2) other segment items, (3) the chief operating decision maker’s title and position and (4) how the chief operating decision maker uses the reported information to assess segment performance and how to allocate resources. The amendments also require these disclosures to be included in interim reporting. Annual reporting for period ending December 31, 2024 and for interim reporting in 2025 We are currently evaluating the disclosure impact of the new standard. Additionally, we continue to evaluate other accounting standards that were recently issued, but not yet adopted as of March 31, 2024; none are expected to have a material impact to our financial statements.

Fair Value

Fair Value	3 Months Ended
	Mar. 31, 2024
Fair Value Disclosures [Abstract]
Fair Value	Fair Value Fair Value Measurements We carry trading account assets and liabilities, AFS debt securities, certain equity securities and various types of derivative financial instruments, at fair value in our consolidated statement of condition on a recurring basis. Changes in the fair values of these financial assets and liabilities are recorded either as components of our consolidated statement of income or as components of AOCI within shareholders' equity in our consolidated statement of condition. We measure fair value for the above-described financial assets and liabilities in conformity with U.S. GAAP that governs the measurement of the fair value of financial instruments. Management believes that its valuation techniques and underlying assumptions used to measure fair value conform to the provisions of U.S. GAAP. We categorize the financial assets and liabilities that we carry at fair value based on a prescribed three-level valuation hierarchy. For information about our valuation techniques for financial assets and financial liabilities measured at fair value and the fair value hierarchy, refer to pages 134 to 139 in Note 2 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2023 Form 10-K. The following tables present information with respect to our financial assets and liabilities carried at fair value in our consolidated statement of condition on a recurring basis as of the dates indicated: Fair Value Measurements on a Recurring Basis As of March 31, 2024 (In millions) Quoted Market Pricing Methods Pricing Methods Impact of Netting (1) Total Net Assets: Trading account assets: U.S. government securities $ 34 $ — $ — $ 34 Non-U.S. government securities — 133 — 133 Other — 593 — 593 Total trading account assets $ 34 $ 726 $ — $ 760 Available-for-sale investment securities: U.S. Treasury and federal agencies: Direct obligations $ 11,729 $ — $ — $ 11,729 Mortgage-backed securities — 11,089 — 11,089 Total U.S. Treasury and federal agencies 11,729 11,089 — 22,818 Non-U.S. debt securities: Mortgage-backed securities — 1,960 — 1,960 Asset-backed securities — 2,165 — 2,165 Non-U.S. sovereign, supranational and non-U.S. agency — 15,321 — 15,321 Other — 2,691 — 2,691 Total non-U.S. debt securities — 22,137 — 22,137 Asset-backed securities: Student loans — 108 — 108 Collateralized loan obligations — 2,751 — 2,751 Non-agency CMBS and RMBS (2) — 212 — 212 Other — 91 — 91 Total asset-backed securities — 3,162 — 3,162 State and political subdivisions — 340 — 340 Other U.S. debt securities 183 183 Total available-for-sale investment securities $ 11,729 $ 36,911 $ — $ 48,640 Other assets: Derivative instruments: Foreign exchange contracts $ — $ 13,420 $ 2 $ (8,485) $ 4,937 Interest rate contracts — 11 — (11) — Total derivative instruments — 13,431 2 (8,496) 4,937 Other 12 633 — — 645 Total assets carried at fair value $ 11,775 $ 51,701 $ 2 $ (8,496) $ 54,982 Liabilities: Accrued expenses and other liabilities: Derivative instruments: Foreign exchange contracts $ 1 $ 12,786 $ — $ (9,707) $ 3,080 Interest rate contracts — 4 — (4) — Other derivative contracts — 178 — — 178 Total derivative instruments 1 12,968 — (9,711) 3,258 Total liabilities carried at fair value $ 1 $ 12,968 $ — $ (9,711) $ 3,258 (1) Represents counterparty netting against level 2 financial assets and liabilities where a legally enforceable master netting agreement exists between us and the counterparty. Netting also reflects asset and liability reductions of $0.76 billion and $1.98 billion, respectively, for cash collateral received from and provided to derivative counterparties. (2) Consists entirely of non-agency CMBS. Fair Value Measurements on a Recurring Basis As of December 31, 2023 (In millions) Quoted Market Pricing Methods Pricing Methods Impact of Netting (1) Total Net Assets: Trading account assets: U.S. government securities $ 36 $ — $ — $ 36 Non-U.S. government securities — 138 — 138 Other — 599 — 599 Total trading account assets $ 36 $ 737 $ — $ 773 Available-for-sale investment securities: U.S. Treasury and federal agencies: Direct obligations $ 8,301 $ — $ — $ 8,301 Mortgage-backed securities — 10,755 — 10,755 Total U.S. Treasury and federal agencies 8,301 10,755 — 19,056 Non-U.S. debt securities: Mortgage-backed securities — 1,857 — 1,857 Asset-backed securities — 2,137 — 2,137 Non-U.S. sovereign, supranational and non-U.S. agency — 15,100 — 15,100 Other — 2,735 — 2,735 Total non-U.S. debt securities — 21,829 — 21,829 Asset-backed securities: Student loans — 114 — 114 Collateralized loan obligations — 2,527 — 2,527 Non-agency CMBS and RMBS (2) — 249 — 249 Other — 90 — 90 Total asset-backed securities — 2,980 — 2,980 State and political subdivisions — 355 — 355 Other U.S. debt securities — 306 — 306 Total available-for-sale investment securities $ 8,301 $ 36,225 $ — $ 44,526 Other assets: Derivative instruments: Foreign exchange contracts $ — $ 19,690 $ 4 $ (14,387) $ 5,307 Interest rate contracts — 13 — (13) — Total derivative instruments — 19,703 4 (14,400) 5,307 Other 11 640 — — 651 Total assets carried at fair value $ 8,348 $ 57,305 $ 4 $ (14,400) $ 51,257 Liabilities: Accrued expenses and other liabilities: Trading account liabilities: Derivative instruments: Foreign exchange contracts $ 1 $ 19,414 $ 1 $ (11,909) $ 7,507 Interest rate contracts 4 — — — 4 Other derivative contracts — 182 — — 182 Total derivative instruments 5 19,596 1 (11,909) 7,693 Total liabilities carried at fair value $ 5 $ 19,596 $ 1 $ (11,909) $ 7,693 (1) Represents counterparty netting against level 2 financial assets and liabilities where a legally enforceable master netting agreement exists between us and the counterparty. Netting also reflects asset and liability reductions of $3.90 billion and $1.41 billion, respectively, for cash collateral received from and provided to derivative counterparties. (2) Consists entirely of non-agency CMBS. Fair Value Estimates Estimates of fair value for financial instruments not carried at fair value in our consolidated statement of condition are generally subjective in nature, and are determined as of a specific point in time based on the characteristics of the financial instruments and relevant market information. The following tables present the reported amounts and estimated fair values of the financial assets and liabilities not carried at fair value, as they would be categorized within the fair value hierarchy, as of the dates indicated: Fair Value Hierarchy (In millions) Reported Amount Estimated Fair Value Quoted Market Prices in Active Markets (Level 1) Pricing Methods with Significant Observable Market Inputs (Level 2) Pricing Methods with Significant Unobservable Market Inputs (Level 3) March 31, 2024 Financial Assets: Cash and due from banks $ 3,413 $ 3,413 $ 3,413 $ — $ — Interest-bearing deposits with banks 125,486 125,486 — 125,486 — Securities purchased under resale agreements 7,489 7,489 — 7,489 — Investment securities held-to-maturity 52,914 46,823 5,918 40,905 — Net loans (1) 38,500 38,266 — 36,300 1,966 Other (2) 6,866 6,866 — 6,866 — Financial Liabilities: Deposits: Non-interest-bearing $ 37,367 $ 37,367 $ — $ 37,367 $ — Interest-bearing - U.S. 148,485 148,485 — 148,485 — Interest-bearing - non-U.S. 66,032 66,032 — 66,032 — Securities sold under repurchase agreements 3,576 3,576 — 3,576 — Other short-term borrowings 11,541 11,541 — 11,541 — Long-term debt 19,746 19,361 — 19,156 205 Other (2) 6,866 6,866 — 6,866 — (1) Includes $17 million of loans classified as held-for-sale that were measured at fair value in level 2 as of March 31, 2024. (2) Represents a portion of underlying client assets related to our prime services business, which clients have allowed us to transfer and re-pledge. Fair Value Hierarchy (In millions) Reported Amount Estimated Fair Value Quoted Market Prices in Active Markets (Level 1) Pricing Methods with Significant Observable Market Inputs (Level 2) Pricing Methods with Significant Unobservable Market Inputs (Level 3) December 31, 2023 Financial Assets: Cash and due from banks $ 4,047 $ 4,047 $ 4,047 $ — $ — Interest-bearing deposits with banks 87,665 87,665 — 87,665 — Securities purchased under resale agreements 6,692 6,692 — 6,692 — Investment securities held-to-maturity 57,117 51,503 8,409 43,094 — Net loans 36,496 36,335 — 34,308 2,027 Other (1) 6,866 6,866 — 6,866 — Financial Liabilities: Deposits: Non-interest-bearing $ 32,569 $ 32,569 $ — $ 32,569 $ — Interest-bearing - U.S. 121,738 121,738 — 121,738 — Interest-bearing - non-U.S. 66,663 66,663 — 66,663 — Securities sold under repurchase agreements 1,867 1,867 — 1,867 — Other short-term borrowings 3,660 3,660 — 3,660 — Long-term debt 18,839 18,417 — 18,216 201 Other (1) 6,866 6,866 — 6,866 — (1) Represents a portion of underlying client assets related to our prime services business, which clients have allowed us to transfer and re-pledge.

Investment Securities

Investment Securities	3 Months Ended
	Mar. 31, 2024
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities Investment securities held by us are classified as either trading account assets, AFS, HTM or equity securities held at fair value at the time of purchase and reassessed periodically, based on management’s intent. For additional information on our accounting for investment securities, refer to page 140 in Note 3 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2023 Form 10-K. Trading assets are carried at fair value. Both realized and unrealized gains and losses on trading assets are recorded in other fee revenue in our consolidated statement of income. AFS securities are carried at fair value, with any allowance for credit losses recorded through the consolidated statement of income and after-tax net unrealized gains and losses are recorded in AOCI. Gains or losses realized on sales of AFS investment securities are computed using the specific identification method and are recorded in gains (losses) related to investment securities, net, in our consolidated statement of income. HTM investment securities are carried at cost, adjusted for amortization of premiums and accretion of discounts, with any allowance for credit losses recorded through the consolidated statement of income. The following table presents the amortized cost, fair value and associated unrealized gains and losses of AFS and HTM investment securities as of the dates indicated: March 31, 2024 December 31, 2023 Amortized Gross Fair Amortized Gross Fair (In millions) Gains Losses Gains Losses Available-for-sale: U.S. Treasury and federal agencies: Direct obligations $ 11,831 $ 42 $ 144 $ 11,729 $ 8,427 $ 39 $ 165 $ 8,301 Mortgage-backed securities (1) 11,208 30 149 11,089 10,870 49 164 10,755 Total U.S. Treasury and federal agencies 23,039 72 293 22,818 19,297 88 329 19,056 Non-U.S. debt securities: Mortgage-backed securities 1,961 3 4 1,960 1,861 3 7 1,857 Asset-backed securities (2) 2,168 4 7 2,165 2,148 2 13 2,137 Non-U.S. sovereign, supranational and non-U.S. agency 15,410 30 119 15,321 15,159 73 132 15,100 Other (3) 2,690 30 29 2,691 2,733 39 37 2,735 Total non-U.S. debt securities 22,229 67 159 22,137 21,901 117 189 21,829 Asset-backed securities: Student loans (4) 107 1 — 108 113 1 — 114 Collateralized loan obligations (5) 2,749 4 2 2,751 2,530 3 6 2,527 Non-agency CMBS and RMBS (6) 212 1 1 212 252 — 3 249 Other 90 1 — 91 90 — — 90 Total asset-backed securities 3,158 7 3 3,162 2,985 4 9 2,980 State and political subdivisions 343 — 3 340 356 — 1 355 Other U.S. debt securities (7) 188 — 5 183 314 — 8 306 Total available-for-sale securities (8)(9) $ 48,957 $ 146 $ 463 $ 48,640 $ 44,853 $ 209 $ 536 $ 44,526 Held-to-maturity: U.S. Treasury and federal agencies: Direct obligations $ 6,091 $ — $ 163 $ 5,928 $ 8,584 $ — $ 163 $ 8,421 Mortgage-backed securities (10) 38,698 2 5,759 32,941 39,472 7 5,271 34,208 Total U.S. Treasury and federal agencies 44,789 2 5,922 38,869 48,056 7 5,434 42,629 Non-U.S. debt securities: Non-U.S. sovereign, supranational and non-U.S. agency 5,064 2 153 4,913 5,757 8 153 5,612 Total non-U.S. debt securities 5,064 2 153 4,913 5,757 8 153 5,612 Asset-backed securities: Student loans (4) 3,055 4 42 3,017 3,298 2 62 3,238 Non-agency CMBS and RMBS (11) 6 18 — 24 6 18 — 24 Total asset-backed securities 3,061 22 42 3,041 3,304 20 62 3,262 Total held-to-maturity securities (8)(12) $ 52,914 $ 26 $ 6,117 $ 46,823 $ 57,117 $ 35 $ 5,649 $ 51,503 (1) As of March 31, 2024 and December 31, 2023, the total fair value included $5.24 billion and $5.54 billion, respectively, of agency CMBS and $5.85 billion and $5.21 billion, respectively, of agency MBS. (2) As of March 31, 2024 and December 31, 2023, the fair value includes non-U.S. collateralized loan obligations of $1.00 billion and $1.02 billion, respectively. (3) As of March 31, 2024 and December 31, 2023, the fair value includes non-U.S. corporate bonds of $2.35 billion and $2.36 billion, respectively. (4) Primarily comprised of securities guaranteed by the federal government with respect to at least 97% of defaulted principal and accrued interest on the underlying loans. (5) Excludes collateralized loan obligations in loan form. Refer to Note 4 for additional information. (6) Consists entirely of non-agency CMBS as of both March 31, 2024 and December 31, 2023. (7) As of March 31, 2024 and December 31, 2023, the fair value of U.S. corporate bonds was $0.18 billion and $0.31 billion, respectively. (8) An immaterial amount of accrued interest related to HTM and AFS investment securities was excluded from the amortized cost basis for the periods ended March 31, 2024 and December 31, 2023. (9) As of both March 31, 2024 and December 31, 2023, we had no allowance for credit losses on AFS investment securities. (10) As of March 31, 2024 and December 31, 2023, the total amortized cost included $5.21 billion and $5.23 billion of agency CMBS, respectively. (11) Consists entirely of non-agency RMBS as of both March 31, 2024 and December 31, 2023. (12) As of both March 31, 2024 and December 31, 2023, we had an allowance for credit losses on HTM investment securities of $1 million. Aggregate investment securities with carrying values of approximately $81.51 billion and $71.30 billion as of March 31, 2024 and December 31, 2023, respectively, were designated as pledged for public and trust deposits, short-term borrowings and for other purposes as provided by law. The following tables present the aggregate fair values of AFS investment securities that have been in a continuous unrealized loss position for less than 12 months, and those that have been in a continuous unrealized loss position for 12 months or longer, as of the dates indicated: March 31, 2024 Less than 12 months 12 months or longer Total (In millions) Fair Gross Fair Gross Fair Gross Available-for-sale: U.S. Treasury and federal agencies: Direct obligations $ 2,359 $ 8 $ 5,403 $ 136 $ 7,762 $ 144 Mortgage-backed securities 1,321 11 6,402 138 7,723 149 Total U.S. Treasury and federal agencies 3,680 19 11,805 274 15,485 293 Non-U.S. debt securities: Mortgage-backed securities 310 — 584 4 894 4 Asset-backed securities 126 — 917 7 1,043 7 Non-U.S. sovereign, supranational and non-U.S. agency 5,579 16 5,415 103 10,994 119 Other 66 — 720 29 786 29 Total non-U.S. debt securities 6,081 16 7,636 143 13,717 159 Asset-backed securities: Collateralized loan obligations 227 — 432 2 659 2 Non-agency CMBS and RMBS — — 119 1 119 1 Total asset-backed securities 227 — 551 3 778 3 State and political subdivisions 210 2 130 1 340 3 Other U.S. debt securities — — 183 5 183 5 Total $ 10,198 $ 37 $ 20,305 $ 426 $ 30,503 $ 463 December 31, 2023 Less than 12 months 12 months or longer Total (In millions) Fair Gross Fair Gross Fair Gross Available-for-sale: U.S. Treasury and federal agencies: Direct obligations $ 333 $ 2 $ 5,416 $ 163 $ 5,749 $ 165 Mortgage-backed securities 961 6 6,512 158 7,473 164 Total U.S. Treasury and federal agencies 1,294 8 11,928 321 13,222 329 Non-U.S. debt securities: Mortgage-backed securities 424 1 719 6 1,143 7 Asset-backed securities 358 — 1,052 13 1,410 13 Non-U.S. sovereign, supranational and non-U.S. agency 3,972 7 5,788 125 9,760 132 Other 50 — 893 37 943 37 Total non-U.S. debt securities 4,804 8 8,452 181 13,256 189 Asset-backed securities: Collateralized loan obligations 183 — 1,605 6 1,788 6 Non-agency CMBS and RMBS 35 — 180 3 215 3 Total asset-backed securities 218 — 1,785 9 2,003 9 State and political subdivisions 64 — 104 1 168 1 Other U.S. debt securities 3 — 303 8 306 8 Total $ 6,383 $ 16 $ 22,572 $ 520 $ 28,955 $ 536 The following table presents the amortized cost and the fair value of contractual maturities of debt investment securities as of March 31, 2024. The maturities of certain ABS, MBS and collateralized mortgage obligations are based on expected principal payments. Actual maturities may differ from these expected maturities since certain borrowers have the right to prepay obligations with or without prepayment penalties. March 31, 2024 (In millions) Under 1 Year 1 to 5 Years 6 to 10 Years Over 10 Years Total Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Available-for-sale: U.S. Treasury and federal agencies: Direct obligations $ 1,789 $ 1,788 $ 8,637 $ 8,527 $ 1,405 $ 1,414 $ — $ — $ 11,831 $ 11,729 Mortgage-backed securities 35 35 2,062 2,049 3,219 3,169 5,892 5,836 11,208 11,089 Total U.S. Treasury and federal agencies 1,824 1,823 10,699 10,576 4,624 4,583 5,892 5,836 23,039 22,818 Non-U.S. debt securities: Mortgage-backed securities 175 175 284 284 52 52 1,450 1,449 1,961 1,960 Asset-backed securities 334 332 539 538 731 730 564 565 2,168 2,165 Non-U.S. sovereign, supranational and non-U.S. agency 3,859 3,837 10,157 10,094 1,394 1,390 — — 15,410 15,321 Other 332 329 2,199 2,198 159 164 — — 2,690 2,691 Total non-U.S. debt securities 4,700 4,673 13,179 13,114 2,336 2,336 2,014 2,014 22,229 22,137 Asset-backed securities: Student loans 30 31 — — 14 14 63 63 107 108 Collateralized loan obligations 41 41 283 282 1,615 1,615 810 813 2,749 2,751 Non-agency CMBS and RMBS — — — — — — 212 212 212 212 Other — — 90 91 — — — — 90 91 Total asset-backed securities 71 72 373 373 1,629 1,629 1,085 1,088 3,158 3,162 State and political subdivisions 83 82 131 130 129 128 — — 343 340 Other U.S. debt securities 133 130 55 53 — — — — 188 183 Total $ 6,811 $ 6,780 $ 24,437 $ 24,246 $ 8,718 $ 8,676 $ 8,991 $ 8,938 $ 48,957 $ 48,640 Held-to-maturity: U.S. Treasury and federal agencies: Direct obligations $ 1,548 $ 1,525 $ 4,509 $ 4,370 $ 24 $ 23 $ 10 $ 10 $ 6,091 $ 5,928 Mortgage-backed securities 131 117 805 741 4,254 3,598 33,508 28,485 38,698 32,941 Total U.S. Treasury and federal agencies 1,679 1,642 5,314 5,111 4,278 3,621 33,518 28,495 44,789 38,869 Non-U.S. debt securities: Non-U.S. sovereign, supranational and non-U.S. agency 1,837 1,809 2,817 2,716 410 388 — — 5,064 4,913 Total non-U.S. debt securities 1,837 1,809 2,817 2,716 410 388 — — 5,064 4,913 Asset-backed securities: Student loans 196 192 336 335 426 424 2,097 2,066 3,055 3,017 Non-agency CMBS and RMBS 1 7 — — — — 5 17 6 24 Total asset-backed securities 197 199 336 335 426 424 2,102 2,083 3,061 3,041 Total $ 3,713 $ 3,650 $ 8,467 $ 8,162 $ 5,114 $ 4,433 $ 35,620 $ 30,578 $ 52,914 $ 46,823 Interest income related to debt securities is recognized in our consolidated statement of income using the effective interest method, or on a basis approximating a level rate of return over the contractual or estimated life of the security. The level rate of return considers any non-refundable fees or costs, as well as purchase premiums or discounts, adjusted as prepayments occur, resulting in amortization or accretion, accordingly. Allowance for Credit Losses on Debt Securities and Impairment of AFS Securities We conduct quarterly reviews of HTM and AFS securities on a collective (pool) basis when similar risk characteristics exist to determine whether an allowance for credit losses should be recognized. We review individual AFS securities periodically to assess if additional impairment is required. For additional information about the Current Expected Credit Loss methodology and the review of investment securities for expected credit losses or impairment, refer to page 145 to 146 in Note 3 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2023 Form 10-K. We monitor the credit quality of the HTM and AFS investment securities using a variety of methods, including both external and internal credit ratings. As of March 31, 2024, over 99% of our HTM and AFS investment portfolio is publicly rated investment grade. As of both March 31, 2024 and December 31, 2023, we had an allowance for credit losses on HTM investment securities of $1 million. In the first quarter of 2024, we recorded no provision for credit losses and no charge-offs on HTM securities. As of both March 31, 2024 and December 31, 2023, we had no allowance for credit losses on AFS investment securities. In the first quarter of 2024, we recorded no provision for credit losses and no charge-offs on AFS securities. We have elected to not record an allowance on accrued interest for HTM and AFS securities. Accrued interest on these securities is reversed against interest income when payment on a security is delinquent for greater than 90 days from the date of payment.

Loans and Allowance for Credit

Loans and Allowance for Credit Losses	3 Months Ended
	Mar. 31, 2024
Receivables [Abstract]
Loans and Allowance for Credit Losses	Loans and Allowance for Credit Losses We segregate our loans into two segments: commercial and financial loans and commercial real estate loans. We further classify commercial and financial loans as fund finance loans, leveraged loans, collateralized loan obligations in loan form, overdrafts and other loans. These classifications reflect their risk characteristics, their initial measurement attributes and the methods we use to monitor and assess credit risk. For additional information on our loans, including our internal risk-rating system used to assess our risk of credit loss for each loan, refer to pages 146 to 151 in Note 4 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2023 Form 10-K. The following table presents our recorded investment in loans, by segment, as of the dates indicated: (In millions) March 31, 2024 December 31, 2023 Domestic (1) : Commercial and financial: Fund Finance (2) $ 13,775 $ 13,697 Leveraged loans 2,503 2,412 Overdrafts 1,584 1,225 Collateralized loan obligations in loan form 150 150 Other (3) 2,453 2,512 Commercial real estate 3,062 3,069 Total domestic $ 23,527 $ 23,065 Foreign (1) : Commercial and financial: Fund Finance (2) $ 5,207 $ 4,956 Leveraged loans 1,204 1,194 Overdrafts 2,136 1,047 Collateralized loan obligations in loan form 6,561 6,369 Total foreign 15,108 13,566 Total loans (4) 38,635 36,631 Allowance for credit losses (135) (135) Loans, net of allowance $ 38,500 $ 36,496 (1) Domestic and foreign categorization is based on the borrower’s country of domicile. (2) Fund finance loans include primarily $10.15 billion private equity capital call finance loans, $6.49 billion loans to real money funds and $1.01 billion loans to business development companies as of March 31, 2024, compared to $9.69 billion private equity capital call finance loans, $6.63 billion loans to real money funds and $1.05 billion loans to business development companies as of December 31, 2023. (3) Includes $2.17 billion securities finance loans, $276 million loans to municipalities and $4 million other loans as of March 31, 2024 and $2.23 billion securities finance loans, $276 million loans to municipalities and $5 million other loans as of December 31, 2023. (4) As of March 31, 2024, excluding overdrafts, floating rate loans totaled $31.98 billion and fixed rate loans totaled $2.93 billion. We have entered into interest rate swap agreements to hedge the forecasted cash flows associated with EURIBOR indexed floating-rate loans. See Note 10 to the consolidated financial statements in our 2023 Form 10-K for additional details. The commercial and financial segment is composed of primarily fund finance loans, purchased leveraged loans, purchased collateralized loan obligations in loan form, overdrafts and other loans. Fund finance loans are composed of revolving credit lines providing liquidity and leverage to mutual fund and private equity fund clients. These classifications reflect their risk characteristics, their initial measurement attributes and the methods we use to monitor and assess credit risk. Certain loans are pledged as collateral for access to the Federal Reserve's discount window. As of March 31, 2024 and December 31, 2023, the loans pledged as collateral totaled $13.04 billion and $13.00 billion, respectively. As of March 31, 2024 and December 31, 2023, we had three loans totaling $105 million and $70 million, respectively, on non-accrual status. We sold $102 million of loans in the first quarter of 2024, of which $17 million remained unsettled and was held-for-sale as of March 31, 2024. We recorded a charge-off against the allowance for these loans of $29 million in the first quarter of 2024. Allowance for Credit Losses We recognize an allowance for credit losses in accordance with ASC 326 for financial assets held at amortized cost and off-balance sheet commitments. The allowance for credit losses is reviewed on a regular basis, and any provision for credit losses is recorded to reflect the amount necessary to maintain the allowance for expected credit losses at a level which represents what management does not expect to recover due to expected credit losses. For additional discussion on the allowance for credit losses for investment securities, please refer to Note 3 to the consolidated financial statements in this Form 10-Q. When the allowance is recorded, a provision for credit loss expense is recognized in net income. The allowance for credit losses for financial assets (excluding investment securities, as discussed in Note 3) represents the portion of the amortized cost basis, including accrued interest for financial assets held at amortized cost, which management does not expect to recover due to expected credit losses and is presented on the statement of condition as an offset to the amortized cost basis. The accrued interest balance is presented separately on the statement of condition within accrued interest and fees receivable. The allowance for off-balance sheet commitments is presented within other liabilities. Loans are charged off to the allowance for credit losses in the reporting period in which either an event occurs that confirms the existence of a loss on a loan, including a sale of a loan below its carrying value, or a portion of a loan is determined to be uncollectible. The allowance for credit losses may be determined using various methods, including discounted cash flow methods, loss-rate methods, probability-of-default methods, and other quantitative or qualitative methods as determined by us. The method used to estimate expected credit losses may vary depending on the type of financial asset, our ability to predict the timing of cash flows, and the information available to us. The allowance for credit losses as reported in our consolidated statement of condition is adjusted by provision for credit losses, which is reported in earnings, and reduced by the charge-off of principal amounts, net of recoveries. We measure expected credit losses of financial assets on a collective (pool) basis when similar risk characteristics exist. Each reporting period, we assess whether the assets in the pool continue to display similar risk characteristics. For a financial asset that does not share risk characteristics with other assets, expected credit losses are measured separately using one or more of the methods noted above. As of March 31, 2024, we had four loans for $43 million in the commercial and financial segment and three loans for $224 million in the commercial real estate segment that no longer met the similar risk characteristics of their collective pool. As of March 31, 2024, $47 million of our allowance for credit losses related to these loans. When the asset is collateral dependent, which means when the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral, expected credit losses are measured as the difference between the amortized cost basis of the asset and the fair value of the collateral, adjusted for the estimated costs to sell. Determining the appropriateness of the allowance is complex and requires judgment by management about the effect of matters that are inherently uncertain. In future periods, factors and forecasts then prevailing may result in significant changes in the allowance for credit losses in those future periods. We estimate credit losses over the contractual life of the financial asset, while factoring in prepayment activity, where supported by data, over a three year reasonable and supportable forecast period. We utilize a baseline, upside and downside scenario which are applied based on a probability weighting, in order to better reflect management’s expectation of expected credit losses given existing market conditions and the changes in the economic environment. The multiple scenarios are based on a three-year horizon (or less depending on contractual maturity) and then revert linearly over a two-year period to a ten-year historical average thereafter. The contractual term excludes expected extensions, renewals and modifications, but includes prepayment assumptions where applicable. As part of our allowance methodology, we establish qualitative reserves to address any risks inherent in our portfolio that are not addressed through our quantitative reserve assessment. These factors may relate to, among other things, legislation changes or new regulation, credit concentration, loan markets, scenario weighting and overall model limitations. The qualitative adjustments are applied to our portfolio of financial instruments under the existing governance structure and are inherently judgmental. For additional information on the allowance for credit losses, refer to pages 146 to 151 in Note 4 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2023 Form 10-K. Credit Quality Credit quality for financial assets held at amortized cost is continuously monitored by management and is reflected within the allowance for credit losses. We use an internal risk-rating system to assess our risk of credit loss for each loan. This risk-rating process incorporates the use of risk-rating tools in conjunction with management judgment. Qualitative and quantitative inputs are captured in a systematic manner, and following a formal review and approval process, an internal credit rating based on our credit scale is assigned. When computing allowance levels, credit loss assumptions are estimated using models that categorize asset pools based on loss history, delinquency status and other credit trends and risk characteristics, including current conditions and reasonable and supportable forecasts about the future. Determining the appropriateness of the allowance is complex and requires judgment by management about the effect of matters that are inherently uncertain. In future periods, evaluations of the overall asset portfolio, in light of the factors and forecasts then prevailing, may result in significant changes in the allowance and credit loss expense in those future periods. Credit quality is assessed and monitored by evaluating various attributes in order to enable timely detection of any concerns with the customer’s credit rating. The results of those evaluations are utilized in underwriting new loans and transactions with counterparties and in our process for estimation of expected credit losses. In assessing the risk rating assigned to each individual loan, among the factors considered are the borrower's debt capacity, collateral coverage, payment history and delinquency experience, financial flexibility and earnings strength, the expected amounts and source of repayment, the level and nature of contingencies, if any, and the industry and geography in which the borrower operates. These factors are based on an evaluation of historical and current information, and involve subjective assessment and interpretation. Credit counterparties are evaluated and risk-rated on an individual basis at least annually. Management considers the ratings to be current as of March 31, 2024. Our internal risk rating methodology assigns risk ratings to counterparties ranging from Investment Grade, Speculative, Special Mention, Substandard, Doubtful and Loss. • Investment Grade: Counterparties with strong credit quality and low expected credit risk and probability of default. Approximately 88% of our loans were rated as investment grade as of March 31, 2024 with external credit ratings, or equivalent, of "BBB-" or better. • Speculative: Counterparties that have the ability to repay but face significant uncertainties, such as adverse business or financial circumstances that could affect credit risk or economic downturns. Loans to counterparties rated as speculative account for approximately 11% of our loans as of March 31, 2024, and are concentrated in leveraged loans. Approximately 91% of those leveraged loans have an external credit rating, or equivalent, of "BB" or "B" as of March 31, 2024. • Special Mention: Counterparties with potential weaknesses that, if uncorrected, may result in deterioration of repayment prospects. • Substandard: Counterparties with well-defined weakness that jeopardizes repayment with the possibility we will sustain some loss. • Doubtful: Counterparties with well-defined weakness which make collection or liquidation in full highly questionable and improbable. • Loss: Counterparties which are uncollectible or have little value. The following tables present our recorded loans to counterparties by risk rating, as noted above, as of the dates indicated: March 31, 2024 Commercial and Financial Commercial Real Estate Total Loans (In millions) Investment grade $ 31,633 $ 2,293 $ 33,926 Speculative 3,646 382 4,028 Special mention 235 163 398 Substandard 29 132 161 Doubtful 13 92 105 Total (1)(2) $ 35,556 $ 3,062 $ 38,618 December 31, 2023 Commercial and Financial Commercial Real Estate Total Loans (In millions) Investment grade $ 29,737 $ 2,287 $ 32,024 Speculative 3,546 449 3,995 Special mention 242 62 304 Substandard 14 224 238 Doubtful 23 47 70 Total (1) $ 33,562 $ 3,069 $ 36,631 (1) Loans include $3.72 billion and $2.27 billion of overdrafts as of March 31, 2024 and December 31, 2023, respectively. Overdrafts are short-term in nature and do not present a significant credit risk to us. As of March 31, 2024, $3.57 billion overdrafts were investment grade and $0.15 billion overdrafts were speculative. (2) Total does not include $17 million of loans classified as held-for-sale as of March 31, 2024. For additional information about credit quality, refer to pages 146 to 151 in Note 4 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2023 Form 10-K. The following table presents the amortized cost basis, by year of origination and credit quality indicator, as of March 31, 2024. For origination years before the fifth annual period, we present the aggregate amortized cost basis of loans. For purchased loans, the date of issuance is used to determine the year of origination, not the date of acquisition. For modified, extended or renewed lending arrangements, we evaluate whether a credit event has occurred which would consider the loan to be a new arrangement. (In millions) 2024 2023 2022 2021 2020 Prior Revolving Loans Total (1) Domestic loans: Commercial and financial: Risk Rating: Investment grade $ 1,566 $ 242 $ 120 $ 198 $ 8 $ 276 $ 15,477 $ 17,887 Speculative 523 473 204 637 104 371 54 2,366 Special mention — 26 — 96 29 16 — 167 Substandard — — — 15 — — — 15 Doubtful 8 5 — — — — — 13 Total commercial and financing $ 2,097 $ 746 $ 324 $ 946 $ 141 $ 663 $ 15,531 $ 20,448 Commercial real estate: Risk Rating: Investment grade $ 39 $ 216 $ 500 $ 465 $ 100 $ 973 $ — $ 2,293 Speculative — — 20 66 49 247 — 382 Special mention — — — — — 163 — 163 Substandard — — — — — 132 — 132 Doubtful — — — — — 92 — 92 Total commercial real estate $ 39 $ 216 $ 520 $ 531 $ 149 $ 1,607 $ — $ 3,062 Non-U.S. loans: Commercial and financial: Risk Rating: Investment grade $ 2,328 $ 1,853 $ 1,853 $ 2,633 $ — $ — $ 5,079 $ 13,746 Speculative 276 270 127 378 113 88 28 1,280 Special mention — — — 68 — — — 68 Substandard — — — — — 14 — 14 Total commercial and financing $ 2,604 $ 2,123 $ 1,980 $ 3,079 $ 113 $ 102 $ 5,107 $ 15,108 Total loans (2) $ 4,740 $ 3,085 $ 2,824 $ 4,556 $ 403 $ 2,372 $ 20,638 $ 38,618 (1) Any reserve associated with accrued interest is not material. As of March 31, 2024, accrued interest receivable of $290 million included in the amortized cost basis of loans has been excluded from the amortized cost basis within this table. (2) Total does not include $17 million of loans classified as held-for-sale as of March 31, 2024. The following table presents the amortized cost basis, by year of origination and credit quality indicator as of December 31, 2023: (In millions) 2023 2022 2021 2020 2019 Prior Revolving Loans Total (1) Domestic loans: Commercial and financial: Risk Rating: Investment grade $ 1,399 $ 120 $ 199 $ 8 $ 272 $ 5 $ 15,476 $ 17,479 Speculative 615 285 747 149 291 141 81 2,309 Special mention — 4 164 — 16 — — 184 Substandard 5 — 18 — — — — 23 Total commercial and financing $ 2,019 $ 409 $ 1,128 $ 157 $ 579 $ 146 $ 15,557 $ 19,995 Commercial real estate: Risk Rating: Investment grade $ 216 $ 500 $ 498 $ 100 $ 375 $ 598 $ — $ 2,287 Speculative — 20 31 50 49 299 — 449 Special mention — — — — 22 40 — 62 Substandard — — — — 95 129 — 224 Doubtful — — — — — 47 — 47 Total commercial real estate $ 216 $ 520 $ 529 $ 150 $ 541 $ 1,113 $ — $ 3,069 Non-U.S. loans: Commercial and financial: Risk Rating: Investment grade $ 2,943 $ 1,956 $ 2,518 $ — $ — $ — $ 4,841 $ 12,258 Speculative 394 135 481 88 109 18 12 1,237 Special mention — — 29 29 — — — 58 Substandard — — — — — 14 — 14 Total commercial and financing $ 3,337 $ 2,091 $ 3,028 $ 117 $ 109 $ 32 $ 4,853 $ 13,567 Total loans $ 5,572 $ 3,020 $ 4,685 $ 424 $ 1,229 $ 1,291 $ 20,410 $ 36,631 (1) Any reserve associated with accrued interest is not material. As of December 31, 2023, accrued interest receivable of $318 million included in the amortized cost basis of loans has been excluded from the amortized cost basis within this table. The following tables present the activity in the allowance for credit losses by portfolio and class for the periods indicated: Three Months Ended March 31, 2024 Commercial and Financial (In millions) Leveraged Loans Other Loans (1) Commercial Real Estate Available-for-sale Securities Held-to-Maturity Securities Off-Balance Sheet Commitments All Other Total Allowance for credit losses: Beginning balance $ 72 $ 4 $ 60 $ — $ 1 $ 14 $ (1) $ 150 Charge-offs (6) — (25) — — — — (31) Provision 5 1 25 — — (4) — 27 Ending balance $ 71 $ 5 $ 60 $ — $ 1 $ 10 $ (1) $ 146 (1) Includes $4 million allowance for credit losses on Fund Finance loans and $1 million on other loans. Three Months Ended March 31, 2023 Commercial and Financial (In millions) Leveraged Loans Other Loans (1) Commercial Real Estate Available-for-sale Securities Off-Balance Sheet Commitments All Other Total Allowance for credit losses: Beginning balance $ 73 $ 5 $ 19 $ 2 $ 23 $ (1) $ 121 Charge-offs (3) — — — — — (3) Provision 12 (1) 10 — (7) 30 44 Ending balance $ 82 $ 4 $ 29 $ 2 $ 16 $ 29 $ 162 (1) Includes $3 million allowance for credit losses on Fund Finance loans and $1 million on other loans. Loans are reviewed on a regular basis, and any provisions for credit losses that are recorded reflect management's estimate of the amount necessary to maintain the allowance for loan losses at a level considered appropriate to absorb expected credit losses in the loan portfolio. In the first quarter of 2024, we recorded a $27 million provision for credit losses, primarily reflecting an increase in loan loss reserves associated with certain commercial real estate loans. This compared with a $44 million provision for credit losses recorded in the same period of 2023, which primarily reflected an episodic provision associated with industry support for a U.S. financial institution. Allowance estimates remain subject to continued model and economic uncertainty and management may use qualitative adjustments in the allowance estimates. If future data and forecasts deviate relative to the forecasts utilized to determine our allowance for credit losses as of March 31, 2024, or if credit risk migration is higher or lower than forecasted for reasons independent of the economic forecast, our allowance for credit losses will also change.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	3 Months Ended
	Mar. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets The following table presents changes in the carrying amount of goodwill during the periods indicated: (In millions) Investment Investment Total Goodwill: Ending balance December 31, 2022 $ 7,232 $ 263 $ 7,495 Acquisitions 44 — 44 Foreign currency translation 70 2 72 Ending balance December 31, 2023 $ 7,346 $ 265 $ 7,611 Acquisitions 14 — 14 Foreign currency translation (42) (1) (43) Ending balance March 31, 2024 $ 7,318 $ 264 $ 7,582 The following table presents changes in the net carrying amount of other intangible assets during the periods indicated: (In millions) Investment Servicing Investment Total Other intangible assets: Ending balance December 31, 2022 $ 1,495 $ 49 $ 1,544 Amortization (217) (22) (239) Foreign currency translation 15 — 15 Ending balance December 31, 2023 1,293 27 1,320 Acquisitions 7 — 7 Amortization (55) (5) (60) Foreign currency translation (9) — (9) Ending balance March 31, 2024 $ 1,236 $ 22 $ 1,258 The following table presents the gross carrying amount, accumulated amortization and net carrying amount of other intangible assets by type as of the dates indicated: March 31, 2024 Gross Accumulated Net (In millions) Other intangible assets: Client relationships $ 2,742 $ (1,833) $ 909 Technology 404 (225) 179 Core deposits 685 (521) 164 Other 84 (78) 6 Total $ 3,915 $ (2,657) $ 1,258 December 31, 2023 Gross Accumulated Net (In millions) Other intangible assets: Client relationships $ 2,761 $ (1,808) $ 953 Technology 402 (216) 186 Core deposits 690 (516) 174 Other 85 (78) 7 Total $ 3,938 $ (2,618) $ 1,320

Other Assets

Other Assets	3 Months Ended
	Mar. 31, 2024
Other Assets [Abstract]
Other Assets	Other Assets The following table presents the components of other assets as of the dates indicated: (In millions) March 31, 2024 December 31, 2023 Securities borrowed (1) $ 25,288 $ 23,131 Derivative instruments, net 4,937 5,307 Bank-owned life insurance 3,770 3,742 Investments in joint ventures and other unconsolidated entities (2) 2,989 2,981 Collateral, net 2,518 2,983 Deferred tax assets, net of valuation allowance (3) 987 1,034 Right-of-use assets 831 805 Prepaid expenses 825 598 Accounts receivable 752 611 Receivable for securities settlement 297 1,082 Income taxes receivable 238 246 Deposits with clearing organizations 59 58 Other (4) 1,977 2,228 Total $ 45,468 $ 44,806 (1) Refer to Note 8, for further information on the impact of collateral on our financial statement presentation of securities borrowing and securities lending transactions. (2) Includes equity securities without readily determinable fair values that are accounted for under the ASC 321 measurement alternative of $192 million and $183 million as of March 31, 2024 and December 31, 2023, respectively. For the three months ended March 31, 2024, no impairments were recognized in other fee revenue related to such equity securities. (3) Deferred tax assets and liabilities recorded in our consolidated statement of condition are netted within the same tax jurisdiction. (4) Includes advances of $886 million

Derivative Financial Instrument

Derivative Financial Instruments	3 Months Ended
	Mar. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments We use derivative financial instruments to support our clients' needs and to manage our interest rate, currency and other market risks. These financial instruments consist of FX contracts such as forwards, futures and options contracts; interest rate contracts such as interest rate swaps (cross currency and single currency) and futures; and other derivative contracts. Derivative instruments used for risk management purposes that are highly effective in offsetting the risk being hedged are generally designated as hedging instruments in hedge accounting relationships, while others are economic hedges and not designated in hedge accounting relationships. For additional information on our use and accounting policies on derivative financial instruments, including derivatives not designated as hedging instruments, refer to pages 155 and 156 in Note 10 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2023 Form 10-K. Derivatives Designated as Hedging Instruments For additional information on our derivatives designated as hedging instruments, including our risk management objectives and hedging documentation methodologies, refer to pages 155 and 156 in Note 10 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2023 Form 10-K. Fair Value Hedges Derivatives designated as fair value hedges are utilized to mitigate the risk of changes in the fair values of recognized assets and liabilities, including long-term debt and AFS securities. We use interest rate contracts in this manner to manage our exposure to changes in the fair value of hedged items caused by changes in interest rates. Changes in the fair value of the derivative and changes in fair value of the hedged item due to changes in the hedged risk are recognized in earnings in the same line item. If a hedge is terminated, but the hedged item was not derecognized, all remaining adjustments to the carrying amount of the hedged item are amortized over a period that is consistent with the amortization of other discounts or premiums associated with the hedged item . Cash Flow Hedges Derivatives designated as cash flow hedges are utilized to offset the variability of cash flows of recognized assets, liabilities or forecasted transactions. We have entered into FX contracts to hedge the change in cash flows attributable to FX movements in foreign currency denominated investment securities. Additionally, we have entered into interest rate swap agreements to hedge the forecasted cash flows associated with EURIBOR indexed floating-rate loans and Interest Rate on Reserve Balances (IORB) indexed floating-rate cash deposits held across the Federal Reserve Bank system. The interest rate swaps synthetically convert the interest receipts from a variable-rate to a fixed-rate, thereby mitigating the risk attributable to changes in the EURIBOR and IORB. Changes in fair value of the derivatives designated as cash flow hedges are initially recorded in AOCI and then reclassified into earnings in the same period or periods during which the hedged forecasted transaction affects earnings and are presented in the same income statement line item as the earnings effect of the hedged item. If the hedge relationship is terminated, the change in fair value on the derivative recorded in AOCI is reclassified into earnings consistent with the timing of the hedged item. For hedge relationships that are discontinued because a forecasted transaction is not expected to occur according to the original hedge terms, any related derivative values recorded in AOCI are immediately recognized in earnings. The net loss associated with cash flow hedges expected to be reclassified from AOCI within 12 months of March 31, 2024, is approximately $183 million. The maximum length of time over which forecasted cash flows are hedged is 5 years. Net Investment Hedges Derivatives categorized as net investment hedges are entered into to protect the net investment in our foreign operations against adverse changes in exchange rates. We use FX forward contracts to convert the foreign currency risk to U.S. dollars to mitigate our exposure to fluctuations in FX rates. The changes in fair value of the FX forward contracts are recorded, net of taxes, in the foreign currency translation component of other comprehensive income (OCI). The following table presents the aggregate contractual, or notional, amounts of derivative financial instruments, including those entered into for trading and asset-and-liability management activities as of the dates indicated: (In millions) March 31, 2024 December 31, 2023 Derivatives not designated as hedging instruments: Interest rate contracts: Futures $ 29,758 $ 12,668 Foreign exchange contracts: Forward, swap and spot 2,756,921 2,528,115 Options purchased 922 851 Options written 449 544 Futures 127 197 Other: Futures 145 125 Stable value contracts (1) 28,454 28,704 Deferred value awards (2) 343 289 Derivatives designated as hedging instruments: Interest rate contracts: Swap agreements 22,441 20,333 Foreign exchange contracts: Forward and swap 9,487 9,777 (1) The notional value of the stable value contracts represents our maximum exposure. However, exposure to various stable value contracts is generally contractually limited to substantially lower amounts than the notional values. (2) Represents grants of deferred value awards to employees; refer to page 156 in Note 10 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2023 Form 10-K. Notional amounts are provided here as an indication of the volume of our derivative activity and serve as a reference to calculate the fair values of the derivative. The following table presents the fair value of derivative financial instruments, excluding the impact of master netting agreements, recorded in our consolidated statement of condition as of the dates indicated. The impact of master netting agreements is provided in Note 8. Derivative Assets (1) Derivative Liabilities (2) (In millions) March 31, 2024 December 31, 2023 March 31, 2024 December 31, 2023 Derivatives not designated as hedging instruments: Foreign exchange contracts $ 13,354 $ 19,498 $ 12,785 $ 19,153 Other derivative contracts — — 178 182 Total $ 13,354 $ 19,498 $ 12,963 $ 19,335 Derivatives designated as hedging instruments: Foreign exchange contracts $ 68 $ 196 $ 2 $ 263 Interest rate contracts 11 13 4 4 Total $ 79 $ 209 $ 6 $ 267 (1) Derivative assets are included within other assets in our consolidated statement of condition. (2) Derivative liabilities are included within other liabilities in our consolidated statement of condition. The following table presents the impact of our use of derivative financial instruments on our consolidated statement of income for the periods indicated: Three Months Ended March 31, 2024 2023 (In millions) Location of Gain (Loss) on Amount of Gain (Loss) on Derivative Recognized in Consolidated Statement of Income Derivatives not designated as hedging instruments: Foreign exchange contracts Foreign exchange trading services revenue $ 207 $ 232 Foreign exchange contracts Interest expense 49 5 Interest rate contracts Foreign exchange trading services revenue 7 1 Other derivative contracts Other fee revenue (2) — Other derivative contracts Compensation and employee benefits (49) (55) Total $ 212 $ 183 The following table shows the carrying amount and associated cumulative basis adjustments related to the application of hedge accounting that is included in the carrying amount of hedged assets and liabilities in fair value hedging relationships: March 31, 2024 Cumulative Fair Value Hedging Adjustment Increasing (Decreasing) the Carrying Amount (In millions) Carrying Amount of Hedged Assets/Liabilities Active De-designated (1) Long-term debt $ 12,465 $ (400) $ 142 Available-for-sale securities (2)(3) 12,621 (605) 2 December 31, 2023 Cumulative Fair Value Hedging Adjustment Increasing (Decreasing) the Carrying Amount (In millions) Carrying Amount of Hedged Assets/Liabilities Active De-designated (1) Long-term debt $ 12,463 $ (340) $ 156 Available-for-sale securities (2)(3) 11,260 (503) 3 (1) Represents hedged items no longer designated in qualifying fair value hedging relationships for which an associated basis adjustment exists at the balance sheet date. (2) Included in these amounts is the amortized cost of the financial assets designated under the portfolio layer hedging relationships (hedged item is the hedged layer of a closed portfolio of financial assets expected to remain outstanding at the end of the hedging relationship). At March 31, 2024 and December 31, 2023, the amortized cost of the closed portfolios used in these hedging relationships was $667 million and $685 million, respectively, of which $400 million was designated under the portfolio layer hedging relationship for both periods. At March 31, 2024 and December 31, 2023, the cumulative adjustment associated with these hedging relationships was ($11) million and ($6) million, respectively. (3) Carrying amount represents amortized cost. As of March 31, 2024 and December 31, 2023, the total notional amount of the interest rate swaps of fair value hedges was $20.81 billion and $19.43 billion, respectively. The following tables present the impact of our use of derivative financial instruments on our consolidated statement of income for the periods indicated: Three Months Ended March 31, Three Months Ended March 31, 2024 2023 2024 2023 (In millions) Location of Gain (Loss) on Derivative in Consolidated Statement of Income Amount of Gain Hedged Item in Fair Value Hedging Relationship Location of Gain (Loss) on Hedged Item in Consolidated Statement of Income Amount of Gain Derivatives designated as fair value hedges: Interest rate contracts Net interest income $ 102 $ (113) Available-for-sale securities (1) Net interest income $ (102) $ 113 Interest rate contracts Net interest income (60) 108 Long-term debt Net interest income 60 (108) Total $ 42 $ (5) $ (42) $ 5 (1) In the three months ended March 31, 2024, approximately $75 million of net unrealized gains on AFS investment securities designated in fair value hedges were recognized in OCI compared to $81 million of net unrealized losses in the same period of 2023. Three Months Ended March 31, Three Months Ended March 31, 2024 2023 Location of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income 2024 2023 (In millions) Amount of Gain or (Loss) Recognized in Other Comprehensive Income on Derivative Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income Derivatives designated as cash flow hedges: Interest rate contracts (1) $ (14) $ 3 Net interest income $ (55) $ (51) Foreign exchange contracts 59 16 Net interest income 254 — Total derivatives designated as cash flow hedges $ 45 $ 19 $ 199 $ (51) Derivatives designated as net investment hedges: Foreign exchange contracts $ 185 $ (41) Gains (Losses) related to investment securities, net $ — $ — Total derivatives designated as net investment hedges 185 (41) — — Total $ 230 $ (22) $ 199 $ (51) (1) As of March 31, 2024, the maximum maturity date of the underlying hedged items is approximately 5.0 years. Derivatives Netting and Credit Contingencies Netting Derivatives receivable and payable as well as cash collateral from the same counterparty are netted in the consolidated statement of condition for those counterparties with whom we have legally binding master netting agreements in place. In addition to cash collateral received and transferred presented on a net basis, we also receive and transfer collateral in the form of securities, which mitigate credit risk but are not eligible for netting. Additional information on netting is provided in Note 8. Credit Contingencies Certain of our derivatives are subject to master netting agreements with our derivative counterparties containing credit risk-related contingent features, which requires us to maintain an investment grade credit rating with the various credit rating agencies. If our rating falls below investment grade, we would be in violation of the provisions, and counterparties to the derivatives could request immediate payment or demand full overnight collateralization on derivatives instruments in liability positions. The aggregate fair value of all derivatives with credit contingent features and in a net liability position as of March 31, 2024 totaled approximately $3.04 billion, against which we provided $2.14 billion of collateral in the normal course of business. If our credit related contingent features underlying these agreements were triggered as of March 31, 2024, the maximum additional collateral we would be required to post to our counterparties is approximately $0.90 billion.

Offsetting Arrangements

Offsetting Arrangements	3 Months Ended
	Mar. 31, 2024
Offsetting [Abstract]
Offsetting Arrangements	Offsetting Arrangements For additional information on our offsetting arrangements, refer to page 159 in Note 11 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2023 Form 10-K. As of March 31, 2024 and December 31, 2023, the value of securities received as collateral from third parties where we are permitted to transfer or re-pledge the securities totaled $11.00 billion and $10.67 billion, respectively, and the fair value of the portion that had been transferred or re-pledged as of the same dates was $6.21 billion and $6.41 billion, respectively . The following tables present information about the offsetting of assets related to derivative contracts and secured financing transactions, as of the dates indicated: Assets: March 31, 2024 Gross Amounts of Recognized Assets (1)(2) Gross Amounts Offset in Statement of Condition (3) Net Amounts of Assets Presented in Statement of Condition Gross Amounts Not Offset in Statement of Condition (In millions) Cash and Securities Received (4) Net Amount (5) Derivatives: Foreign exchange contracts $ 13,422 $ (7,730) $ 5,692 $ — $ 5,692 Interest rate contracts (6) 11 (4) 7 — 7 Cash collateral and securities netting NA (762) (762) (376) (1,138) Total derivatives 13,433 (8,496) 4,937 (376) 4,561 Other financial instruments: Resale agreements and securities borrowing (7)(8) 236,786 (204,009) 32,777 (31,146) 1,631 Total derivatives and other financial instruments $ 250,219 $ (212,505) $ 37,714 $ (31,522) $ 6,192 Assets: December 31, 2023 Gross Amounts of Recognized Assets (1)(2) Gross Amounts Offset in Statement of Condition (3) Net Amounts of Assets Presented in Statement of Condition Gross Amounts Not Offset in Statement of Condition (In millions) Cash and Securities Received (4) Net Amount (5) Derivatives: Foreign exchange contracts $ 19,694 $ (10,496) $ 9,198 $ — $ 9,198 Interest rate contracts (6) 13 — 13 — 13 Cash collateral and securities netting NA (3,904) (3,904) (1,069) (4,973) Total derivatives 19,707 (14,400) 5,307 (1,069) 4,238 Other financial instruments: Resale agreements and securities borrowing (7)(8) 230,384 (200,561) 29,823 (28,016) 1,807 Total derivatives and other financial instruments $ 250,091 $ (214,961) $ 35,130 $ (29,085) $ 6,045 (1) Amounts include all transactions regardless of whether or not they are subject to an enforceable netting arrangement. (2) Refer to Note 1 and Note 2 for additional information about the measurement basis of derivative instruments. (3) Amounts subject to netting arrangements which have been determined to be legally enforceable and eligible for netting in the consolidated statement of condition. (4) Includes securities in connection with our securities borrowing transactions. (5) Includes amounts secured by collateral not determined to be subject to enforceable netting arrangements. (6) Variation margin payments presented as settlements rather than collateral. (7) Included in the $32.78 billion as of March 31, 2024 were $7.49 billion of resale agreements and $25.29 billion of collateral provided related to securities borrowing. Included in the $29.82 billion as of December 31, 2023 were $6.69 billion of resale agreements and $23.13 billion of collateral provided related to securities borrowing. Resale agreements and collateral provided related to securities borrowing were recorded in securities purchased under resale agreements and other assets, respectively, in our consolidated statement of condition. Refer to Note 9 for additional information with respect to principal securities finance transactions. (8) Offsetting of resale agreements primarily relates to our involvement in FICC, where we settle transactions on a net basis for payment and delivery through the Fedwire system. NA Not applicable The following tables present information about the offsetting of liabilities related to derivative contracts and secured financing transactions, as of the dates indicated: Liabilities: March 31, 2024 Gross Amounts of Recognized Liabilities (1)(2) Gross Amounts Offset in Statement of Condition (3) Net Amounts of Liabilities Presented in Statement of Condition Gross Amounts Not Offset in Statement of Condition (In millions) Cash and Securities Received (4) Net Amount (5) Derivatives: Foreign exchange contracts $ 12,787 $ (7,730) $ 5,057 $ — $ 5,057 Interest rate contracts (6) 4 (4) — — — Other derivative contracts 178 — 178 — 178 Cash collateral and securities netting NA (1,977) (1,977) (550) (2,527) Total derivatives 12,969 (9,711) 3,258 (550) 2,708 Other financial instruments: Repurchase agreements and securities lending (7)(8) 221,325 (204,009) 17,316 (16,752) 564 Total derivatives and other financial instruments $ 234,294 $ (213,720) $ 20,574 $ (17,302) $ 3,272 Liabilities: December 31, 2023 Gross Amounts of Recognized Liabilities (1)(2) Gross Amounts Offset in Statement of Condition (3) Net Amounts of Liabilities Presented in Statement of Condition Gross Amounts Not Offset in Statement of Condition (In millions) Cash and Securities Received (4) Net Amount (5) Derivatives: Foreign exchange contracts $ 19,416 $ (10,496) $ 8,920 $ — $ 8,920 Interest rate contracts (6) 4 — 4 — 4 Other derivative contracts 182 — 182 — 182 Cash collateral and securities netting NA (1,413) (1,413) (633) (2,046) Total derivatives 19,602 (11,909) 7,693 (633) 7,060 Other financial instruments: Repurchase agreements and securities lending (7)(8) 214,362 (200,561) 13,801 (13,306) 495 Total derivatives and other financial instruments $ 233,964 $ (212,470) $ 21,494 $ (13,939) $ 7,555 (1) Amounts include all transactions regardless of whether or not they are subject to an enforceable netting arrangement. (2) Refer to Note 1 and Note 2 for additional information about the measurement basis of derivative instruments. (3) Amounts subject to netting arrangements which have been determined to be legally enforceable and eligible for netting in the consolidated statement of condition. (4) Includes securities provided in connection with our securities lending transactions. (5) Includes amounts secured by collateral not determined to be subject to enforceable netting arrangements. (6) Variation margin payments presented as settlements rather than collateral. (7) Included in the $17.32 billion as of March 31, 2024 were $3.58 billion of repurchase agreements and $13.74 billion of collateral received related to securities lending transactions. Included in the $13.80 billion as of December 31, 2023 were $1.87 billion of repurchase agreements and $11.93 billion of collateral received related to securities lending transactions. Repurchase agreements and collateral received related to securities lending were recorded in securities sold under repurchase agreements and accrued expenses and other liabilities, respectively, in our consolidated statement of condition. Refer to Note 9 for additional information with respect to principal securities finance transactions. (8) Offsetting of repurchase agreements primarily relates to our involvement in FICC, where we settle transactions on a net basis for payment and delivery through the Fedwire system. NA Not applicable The securities transferred under resale and repurchase agreements typically are U.S. Treasury, agency and agency MBS. In our principal securities borrowing and lending arrangements, the securities transferred are predominantly equity securities and some corporate debt securities. The fair value of the securities transferred may increase in value to an amount greater than the amount received under our repurchase and securities lending arrangements, which exposes us to counterparty risk. We require the review of the price of the underlying securities in relation to the carrying value of the repurchase agreements and securities lending arrangements on a daily basis and when appropriate, adjust the cash or security to be obtained or returned to counterparties that is reflective of the required collateral levels. The following table summarizes our repurchase agreements and securities lending transactions by category of collateral pledged and remaining maturity of these agreements, as of the periods indicated: As of March 31, 2024 As of December 31, 2023 (In millions) Overnight and Continuous Up to 30 Days 30-90 days Greater than 90 Days Total Overnight and Continuous Up to 30 Days 30-90 days Greater than 90 Days Total Repurchase agreements: U.S. Treasury and agency securities $ 199,053 $ 254 $ 929 $ 2,064 $ 202,300 $ 196,212 $ — $ 185 $ 1,360 $ 197,757 Total 199,053 254 929 2,064 202,300 196,212 — 185 1,360 197,757 Securities lending transactions: US Treasury and agency securities 4 — — — 4 6 — — — 6 Corporate debt securities 252 — 13 — 265 278 — 3 — 281 Equity securities 9,201 18 58 2,613 11,890 7,128 20 13 2,291 9,452 Other (1) 6,866 — — — 6,866 6,866 — — — 6,866 Total 16,323 18 71 2,613 19,025 14,278 20 16 2,291 16,605 Gross amount of recognized liabilities for repurchase agreements and securities lending $ 215,376 $ 272 $ 1,000 $ 4,677 $ 221,325 $ 210,490 $ 20 $ 201 $ 3,651 $ 214,362 (1) Represents a security interest in underlying client assets related to our prime services business, which clients have allowed us to transfer and re-pledge.

Commitments and Guarantees

Commitments and Guarantees	3 Months Ended
	Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Guarantees	Commitments and Guarantees For additional information on the nature of the obligations and related business activities for our commitments and guarantees, refer to page 162 in Note 12 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2023 Form 10-K. The following table presents the aggregate gross contractual amounts of our off-balance sheet commitments and guarantees, as of the dates indicated: (In millions) March 31, 2024 December 31, 2023 Commitments: Unfunded credit facilities $ 34,569 $ 34,197 Guarantees (1) : Indemnified securities financing $ 326,375 $ 279,916 Standby letters of credit 1,491 1,510 (1) The potential losses associated with these guarantees equal the gross contractual amounts and do not consider the value of any collateral or reflect any participations to independent third parties. Approximately 77% of our unfunded commitments to extend credit expire within one year as of March 31, 2024, compared to approximately 75% as of December 31, 2023. Indemnified Securities Financing For additional information on our indemnified securities financing, refer to page 162 in Note 12 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2023 Form 10-K. The following table summarizes the aggregate fair values of indemnified securities financing and related collateral, as well as collateral invested in indemnified repurchase agreements, as of the dates indicated: (In millions) March 31, 2024 December 31, 2023 Fair value of indemnified securities financing $ 326,375 $ 279,916 Fair value of cash and securities held by us, as agent, as collateral for indemnified securities financing 341,903 293,855 Fair value of collateral for indemnified securities financing invested in indemnified repurchase agreements 69,197 59,028 Fair value of cash and securities held by us or our agents as collateral for investments in indemnified repurchase agreements 73,975 63,105 In certain cases, we participate in securities finance transactions as a principal. As a principal, we borrow securities from the lending client and then lend such securities to the subsequent borrower, either our client or a broker/dealer. Our right to receive and obligation to return collateral in connection with our securities lending transactions are recorded in other assets and other liabilities, respectively, in our consolidated statement of condition. As of March 31, 2024 and December 31, 2023, we had approximately $25.29 billion and $23.13 billion, respectively, of collateral provided and approximately $13.74 billion and $11.93 billion, respectively, of collateral received from clients in connection with our participation in principal securities finance transactions. FICC Guarantee As a sponsoring member in the FICC member program, we provide a guarantee to FICC in the event a customer fails to perform its obligations under a transaction. In order to minimize the risk associated with this guarantee, sponsored members acting as buyers generally grant a security interest in the subject securities received under and held on their behalf by State Street. Additionally, as a member of certain industry clearing and settlement exchanges, we may be required to pay a pro rata share of the losses incurred by the organization and provide liquidity support in the event of the default of another member to the extent that the defaulting member’s clearing fund obligation and the prescribed loss allocation is depleted. It is difficult to estimate our maximum possible exposure under the membership agreements, since this would require an assessment of future claims that may be made against us that have not yet occurred. At both March 31, 2024 and December 31, 2023, we did not record any liabilities under these arrangements. For additional information on our repurchase and reverse repurchase agreements, please refer to Note 8 to the consolidated financial statements in this Form 10-Q.

Contingencies

Contingencies	3 Months Ended
	Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies Legal and Regulatory Matters In the ordinary course of business, we and our subsidiaries are involved in disputes, litigation, and governmental or regulatory inquiries and investigations, both pending and threatened. These matters, if resolved adversely against us or settled, may result in monetary awards or payments, fines and penalties or require changes in our business practices. The resolution or settlement of these matters is inherently difficult to predict. Based on our assessment of these pending matters, we do not believe that the amount of any judgment, settlement or other action arising from any pending matter is likely to have a material adverse effect on our consolidated financial condition. However, an adverse outcome or development in certain of the matters described below could have a material adverse effect on our consolidated results of operations for the period in which such matter is resolved, or an accrual is determined to be required, on our consolidated financial condition, or on our reputation. We evaluate our needs for accruals of loss contingencies related to legal and regulatory proceedings on a case-by-case basis. When we have a liability that we deem probable, and we deem the amount of such liability can be reasonably estimated as of the date of our consolidated financial statements, we accrue our estimate of the amount of loss. We also consider a loss probable and establish an accrual when we make, or intend to make, an offer of settlement. Once established, an accrual is subject to subsequent adjustment as a result of additional information. The resolution of legal and regulatory proceedings and the amount of reasonably estimable loss (or range thereof) are inherently difficult to predict, especially in the early stages of proceedings. Even if a loss is probable, an amount (or range) of loss might not be reasonably estimated until the later stages of the proceeding due to many factors such as the presence of complex or novel legal theories, the discretion of governmental authorities in seeking sanctions or negotiating resolutions in civil and criminal matters, the pace and timing of discovery and other assessments of facts and the procedural posture of the matter (collectively, "factors influencing reasonable estimates"). As of March 31, 2024, our aggregate accruals for loss contingencies for legal, regulatory and related matters totaled approximately $20 million, including potential fines by government agencies and civil litigation with respect to the matters specifically discussed below. To the extent that we have established accruals in our consolidated statement of condition for probable loss contingencies, such accruals may not be sufficient to cover our ultimate financial exposure associated with any settlements or judgments. Any such ultimate financial exposure, or proceedings to which we may become subject in the future, could have a material adverse effect on our businesses, on our future consolidated financial statements or on our reputation. As of March 31, 2024, for those matters for which we have accrued probable loss contingencies and for other matters for which loss is reasonably possible (but not probable) in future periods, and for which we are able to estimate a range of reasonably possible loss, our estimate of the aggregate reasonably possible loss (in excess of any accrued amounts) ranges up to approximately $40 million. Our estimate with respect to the aggregate reasonably possible loss is based upon currently available information and is subject to significant judgment and a variety of assumptions and known and unknown uncertainties, which may change quickly and significantly from time to time, particularly if and as we engage with applicable governmental agencies or plaintiffs in connection with a proceeding. Also, the matters underlying the reasonably possible loss will change from time to time. As a result, actual results may vary significantly from the current estimate. In certain pending matters, it is not currently feasible to reasonably estimate the amount or a range of reasonably possible loss, and such losses, which may be significant, are not included in the estimate of reasonably possible loss discussed above. This is due to, among other factors, the factors influencing reasonable estimates described above. An adverse outcome in one or more of the matters for which we have not estimated the amount or a range of reasonably possible loss, individually or in the aggregate, could have a material adverse effect on our businesses, on our future consolidated financial statements or on our reputation. Given that our actual losses from any legal or regulatory proceeding for which we have provided an estimate of the reasonably possible loss could significantly exceed such estimate, and given that we cannot estimate reasonably possible loss for all legal and regulatory proceedings as to which we may be subject now or in the future, no conclusion as to our ultimate exposure from current pending or potential legal or regulatory proceedings should be drawn from the current estimate of reasonably possible loss. The following discussion provides information with respect to significant legal, governmental and regulatory matters. Gomes, et al. v. State Street Corp. Eight participants in our Salary Savings Program filed a purported class action complaint in May 2021 on behalf of participants and beneficiaries who participated in the Program and invested in our proprietary investment fund options between May 2015 and the present. The complaint names the Plan Sponsor as well as the committees overseeing the Plan and their respective members as defendants, and alleges breach of fiduciary duty and violations of other duties owed to retirement plan participants under the Employee Retirement Income and Security Act. We have agreed, subject to court approval, to resolve this matter and pay a cost that is within our established accruals for loss contingencies. Edmar Financial Company, LLC et al v. Currenex, Inc. et al In August 2021, two former Currenex clients filed a putative civil class action lawsuit in the Southern District of New York alleging antitrust violations, fraud and a civil Racketeer Influenced and Corrupt Organization Act violation against Currenex, State Street and others. Piercy, et al. v. AT&T Inc., et al.; Schloss, et al. v. AT&T Inc., et al. In March 2024, two putative class action complaints were filed by participants in the AT&T Pension Benefit Plan alleging violations of ERISA’s fiduciary and prohibited transaction rules against State Street Global Advisors Trust Company, AT&T, Inc., AT&T Services, Inc., and others. German Tax Matter In connection with a routine audit including the period 2013-2015, German tax authorities have questioned whether State Street should have withheld and be secondarily liable for certain taxes on dividends paid on securities of German issuers held as collateral over dividend record dates in client lending transactions with counterparties outside of Germany. Income Taxes In determining our provision for income taxes, we make certain judgments and interpretations with respect to tax laws in jurisdictions in which we have business operations. Because of the complex nature of these laws, in the normal course of our business, we are subject to challenges from U.S. and non-U.S. income tax authorities regarding the amount of income taxes due. These challenges may result in adjustments to the timing or amount of taxable income or deductions or the allocation of taxable income among tax jurisdictions. We recognize a tax benefit when it is more likely than not that our position will result in a tax deduction or credit. Unrecognized tax benefits totaled approximately $237 million as of both March 31, 2024 and December 31, 2023, respectively. We are presently under audit by a number of tax authorities. The earliest tax year open to examination in jurisdictions where we have material operations is 2015. Management believes that we have sufficiently accrued liabilities as of March 31, 2024 for potential tax exposures.

Variable Interest Entities

Variable Interest Entities	3 Months Ended
	Mar. 31, 2024
Equity Method Investments and Joint Ventures [Abstract]
Variable Interest Entities	Variable Interest Entities For additional information on our accounting policy and our use of variable interest entities (VIEs), refer to pages 165 to 166 in Note 14 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, "Variable Interest Entities", in our 2023 Form 10-K. Interests in Investment Funds As of both March 31, 2024 and December 31, 2023, we had no consolidated funds. As of both March 31, 2024 and December 31, 2023, we managed certain funds, considered VIEs, in which we held a variable interest, but for which we were not deemed to be the primary beneficiary. Our potential maximum loss exposure related to these unconsolidated funds totaled $18 million as of both March 31, 2024 and December 31, 2023, and represented the carrying value of our investments, which are recorded in other assets in our consolidated statement of condition. The amount of loss we may recognize during any period is limited to the carrying amount of our investments in the unconsolidated funds. We also held investments in low-income housing, production and investment tax credit entities, considered VIEs for which we were not deemed to be the primary beneficiary. As of March 31, 2024 and December 31, 2023, our potential maximum loss exposure related to these unconsolidated entities totaled $1.28 billion and $1.33 billion, respectively, most of which represented the carrying value of our investments which are recorded in other assets in our consolidated statement of condition. We account for our low-income housing tax credit investments (LIHTC) under the proportional amortization method. Effective January 1, 2023, we also elected to account for our investments in production tax credit investments under the proportional amortization method of accounting. Under the proportional amortization method, the initial cost of the investment is amortized based on a percentage of the actual income tax credits and other income tax benefits allocated in the current period versus the total estimated income tax credits and other income tax benefits expected to be received over the life of the investment. The net benefit, representing the difference between amortization of the investment balance, recognition of the income tax credits and recognition of other income tax benefits from the investment is recognized as a component of income tax expense. As of March 31, 2024, we had investments in LIHTC and production tax credit investments of $788 million and $365 million, respectively, which are included in other assets in our consolidated statement of condition. Contingent contributions related to the renewable energy production tax credit investments were $48 million at March 31, 2024. These contributions are contingent on production and expected to be paid through 2033. Deferred contributions related to the LIHTC investments were $149 million at March 31, 2024. These deferred contributions are payable in accordance with the respective agreements and are expected to be paid through 2038. The following table presents the impact of our tax credit programs for which we have elected to apply proportional amortization accounting on our consolidated statement of income for the periods indicated: (In millions) Three Months Ended March 31, 2024 Income (loss) recorded on investments within other fee revenue $ 4 Income recorded in total revenue 4 Tax credits and benefits recognized in income tax expense 56 Proportional amortization recognized in income tax expense (44) Net benefits included in income tax expense 12 Net benefit attributable to tax-advantaged investments included in the consolidated statement of income $ 16

Shareholders' Equity

Shareholders' Equity	3 Months Ended
	Mar. 31, 2024
Equity [Abstract]
Shareholders' Equity	Shareholders' Equity Preferred Stock The following table summarizes selected terms of each of the series of the preferred stock issued and outstanding as of March 31, 2024: Preferred Stock (1) : Issuance Date Depositary Shares Issued Amount outstanding (in millions) Ownership Interest Per Depositary Share Liquidation Preference Per Share Liquidation Preference Per Depositary Share Per Annum Dividend Rate Dividend Payment Frequency Carrying Value as of March 31, 2024 Redemption Date (2) Series G April 2016 20,000,000 $ 500 1/4,000th 100,000 25 5.35% (3) Quarterly $ 493 March 15, 2026 Series H September 2018 500,000 500 1/100th 100,000 1,000 Floating rate equal to the three-month CME term SOFR plus 2.801%, or 8.185% effective December 15, 2023 Semi-annually 494 December 15, 2023 Series I January 2024 1,500,000 1,500 1/100th 100,000 1,000 6.700% to but excluding March 15, 2029, then a floating rate equal to the five-year U.S. Treasury rate plus 2.613% Quarterly 1,481 March 15, 2029 (1) The preferred stock and corresponding depositary shares may be redeemed at our option in whole, but not in part, prior to the redemption date upon the occurrence of a regulatory capital treatment event, as defined in the certificate of designation, at a redemption price equal to the liquidation price per share and liquidation price per depositary share plus any declared and unpaid dividends, without accumulation of any undeclared dividends. (2) On the redemption date, or any dividend payment date thereafter, the preferred stock and corresponding depositary shares may be redeemed by us, in whole or in part, at the liquidation price per share and liquidation price per depositary share plus any declared and unpaid dividends, without accumulation of any undeclared dividends. (3) The dividend rate for the floating rate period of the Series G preferred stock that begins on March 15, 2026 and all subsequent floating rate periods will remain at the current fixed rate in accordance with the LIBOR Act and the contractual terms of the Series G preferred stock. On January 31, 2024, we issued 1.5 million depositary shares, each representing 1/100th ownership interest in shares of fixed-to-floating rate, non-cumulative perpetual preferred stock, Series I, without par value per share, with a liquidation preference of $100,000 per share (equivalent to $1,000 per depositary share), in a public offering. The aggregate proceeds, net of underwriting discounts, commissions and other issuance costs, were approximately $1.5 billion. Dividends on the Series I Preferred Stock will be payable quarterly at an initial rate of 6.700% per annum commencing on June 15, 2024, with the first dividend payable on a pro-rata basis. Our preferred stock dividends, including the declaration, timing and amount thereof, are subject to consideration and approval by the Board at the relevant times. On March 15, 2024, we redeemed an aggregate $1.0 billion, or all 7,500 outstanding shares, of our non-cumulative perpetual preferred stock, Series D (represented by 30,000,000 depository shares), for a cash redemption price of $100,000 per share (equivalent to $25 per depository share), plus all declared and unpaid dividends and all 2,500 of the outstanding shares of our noncumulative perpetual preferred stock, Series F (represented by 250,000 depository shares), for a cash redemption price of $100,000 per share (equivalent to $1,000 per depositary share) plus all declared and unpaid dividends. The following tables present the dividends declared for each of the series of preferred stock issued and outstanding for the periods indicated: Three Months Ended March 31, 2024 2023 (Dollars in millions, except per share amounts) Dividends Declared per Share Dividends Declared per Depositary Share Total Dividends Declared per Share Dividends Declared per Depositary Share Total Preferred Stock: Series D $ 1,475 $ 0.37 $ 11 $ 1,475 $ 0.37 $ 11 Series F 2,336 23.36 6 2,092 20.92 5 Series G 1,338 0.33 7 1,338 0.33 7 Series H 2,069 20.69 10 — — — Total $ 34 $ 23 Common Stock On January 19, 2024, we announced a new common share repurchase program, approved by our Board and superseding all prior programs, authorizing the purchase of up to $5.0 billion of our common stock beginning in the first quarter of 2024. This new program has no set expiration date and is not expected to be executed in full during 2024. We repurchased $100 million of our common stock in the first quarter of 2024 under our 2024 share repurchase authorization. The table below presents the activity under our common share repurchase program for the period indicated: Three Months Ended March 31, 2024 Three Months Ended March 31, 2023 Shares Acquired Average Cost per Share Total Acquired Shares Acquired Average Cost per Share Total Acquired 2024 Program 1.4 $ 73.24 $ 100 — $ — $ — 2023 Program — — — 13.6 91.57 1,250 The tables below present the dividends declared on common stock for the periods indicated: Three Months Ended March 31, 2024 2023 Dividends Declared per Share Total (In millions) Dividends Declared per Share Total (In millions) Common Stock $ 0.69 $ 208 $ 0.63 $ 212 Accumulated Other Comprehensive Income (Loss) The following table presents the after-tax components of AOCI and changes for the periods indicated, net of related taxes: (In millions) Net Unrealized Gains (Losses) on Cash Flow Hedges Net Unrealized Gains (Losses) on Investment Securities (1) Net Unrealized Losses on Retirement Plans Foreign Currency Translation Net Unrealized Gains (Losses) on Hedges of Net Investments in Non-U.S. Subsidiaries Total Balance as of December 31, 2022 $ (359) $ (1,817) $ (143) $ (1,751) $ 359 $ (3,711) Other comprehensive income (loss) before reclassifications 14 194 — 172 (42) 338 Increase (decrease) due to amounts reclassified from accumulated other comprehensive income 37 52 12 — — 101 Other comprehensive income (loss) 51 246 12 172 (42) 439 Balance as of March 31, 2023 $ (308) $ (1,571) $ (131) $ (1,579) $ 317 $ (3,272) Balance as of December 31, 2023 $ (131) $ (947) $ (145) $ (1,400) $ 269 $ (2,354) Other comprehensive income (loss) before reclassifications 34 (30) 6 (292) 185 (97) Increase (decrease) due to amounts reclassified from accumulated other comprehensive income (147) 228 1 — — 82 Other comprehensive income (loss) (113) 198 7 (292) 185 (15) Balance as of March 31, 2024 $ (244) $ (749) $ (138) $ (1,692) $ 454 $ (2,369) (1) Includes after-tax net unamortized unrealized gains (losses) of ($492) million and ($530) million as of March 31, 2024 and December 31, 2023, respectively, related to AFS investment securities previously transferred to HTM. The following tables present after-tax reclassifications into earnings for the periods indicated: Three Months Ended March 31, 2024 2023 (In millions) Amounts Reclassified into Earnings Affected Line Item in Consolidated Statement of Income Investment securities: Losses reclassified from accumulated other comprehensive income into income, net of related taxes of $83 and $19, respectively $ 228 $ 52 Net interest income Cash flow hedges: Losses (gains) reclassified from accumulated other comprehensive income into income, net of related taxes of $(52) and $14, respectively (147) 37 Net interest income Retirement plans: Amortization of actuarial losses, net of related taxes of $0 and $5, respectively 1 12 Compensation and employee benefits expenses Total amounts reclassified from accumulated other comprehensive income $ 82 $ 101

Regulatory Capital

Regulatory Capital	3 Months Ended
	Mar. 31, 2024
Banking and Thrift, Other Disclosure [Abstract]
Regulatory Capital	Regulatory Capital For additional information on our regulatory capital, including the regulatory capital requirements administered by federal banking agencies, which we are subject to, refer to pages 169 to 170 in Note 16 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2023 Form 10-K. As of March 31, 2024, we and State Street Bank exceeded all regulatory capital adequacy requirements to which we were subject to. As of March 31, 2024, State Street Bank was categorized as “well capitalized” under the applicable regulatory capital adequacy framework, and exceeded all “well capitalized” ratio guidelines to which it was subject. Management believes that no conditions or events have occurred since March 31, 2024 that have changed the capital categorization of State Street Bank. The following table presents the regulatory capital structure, total RWA, related regulatory capital ratios and the minimum required regulatory capital ratios for us and State Street Bank as of the dates indicated. State Street Corporation State Street Bank (Dollars in millions) Basel III Advanced Approaches March 31, 2024 Basel III Standardized Approach March 31, 2024 Basel III Advanced Approaches December 31, 2023 Basel III Standardized Approach December 31, 2023 Basel III Advanced Approaches March 31, 2024 Basel III Standardized Approach March 31, 2024 Basel III Advanced Approaches December 31, 2023 Basel III Standardized Approach December 31, 2023 Common shareholders' equity: Common stock and related surplus $ 11,228 $ 11,228 $ 11,245 $ 11,245 $ 13,333 $ 13,333 $ 13,033 $ 13,033 Retained earnings 28,166 28,166 27,957 27,957 14,888 14,888 14,454 14,454 Accumulated other comprehensive income (loss) (2,369) (2,369) (2,354) (2,354) (2,094) (2,094) (2,097) (2,097) Treasury stock, at cost (15,060) (15,060) (15,025) (15,025) — — — — Total 21,965 21,965 21,823 21,823 26,127 26,127 25,390 25,390 Regulatory capital adjustments: Goodwill and other intangible assets, net of associated deferred tax liabilities (8,380) (8,380) (8,470) (8,470) (8,107) (8,107) (8,208) (8,208) Other adjustments (1) (418) (418) (382) (382) (321) (321) (298) (298) Common equity tier 1 capital 13,167 13,167 12,971 12,971 17,699 17,699 16,884 16,884 Preferred stock 2,468 2,468 1,976 1,976 — — — — Tier 1 capital 15,635 15,635 14,947 14,947 17,699 17,699 16,884 16,884 Qualifying subordinated long-term debt 1,869 1,869 1,870 1,870 535 535 536 536 Allowance for credit losses — 146 — 150 — 146 — 150 Total capital $ 17,504 $ 17,650 $ 16,817 $ 16,967 $ 18,234 $ 18,380 $ 17,420 $ 17,570 Risk-weighted assets: Credit risk (2) $ 61,787 $ 116,388 $ 61,210 $ 109,228 $ 54,966 $ 114,292 $ 54,942 $ 107,067 Operational risk (3) 48,149 NA 43,768 NA 47,044 NA 42,297 NA Market risk 2,225 2,225 2,475 2,475 2,225 2,225 2,475 2,475 Total risk-weighted assets $ 112,161 $ 118,613 $ 107,453 $ 111,703 $ 104,235 $ 116,517 $ 99,714 $ 109,542 Adjusted quarterly average assets $ 289,772 $ 289,772 $ 269,807 $ 269,807 $ 286,577 $ 286,577 $ 266,818 $ 266,818 Capital Ratios: 2024 Minimum Requirements (4) 2023 Minimum Requirements (4) Common equity tier 1 capital 8.0 % 8.0 % 11.7 % 11.1 % 12.1 % 11.6 % 17.0 % 15.2 % 16.9 % 15.4 % Tier 1 capital 9.5 9.5 13.9 13.2 13.9 13.4 17.0 15.2 16.9 15.4 Total capital 11.5 11.5 15.6 14.9 15.7 15.2 17.5 15.8 17.5 16.0 Tier 1 leverage (5) 4.0 4.0 5.4 5.4 5.5 5.5 6.2 6.2 6.3 6.3 (1) Other adjustments within CET1 capital primarily include AOCI hedges that are not recognized at fair value on the balance sheet, the overfunded portion of our defined benefit pension plan obligation net of associated deferred tax liabilities, disallowed deferred tax assets, and other required credit risk-based deductions. (2) Under the advanced approaches, credit risk RWA includes a CVA which reflects the risk of potential fair value adjustments for credit risk reflected in our valuation of over-the-counter derivative contracts. We used a simple CVA approach in conformity with the Basel III advanced approaches. (3) Under the current advanced approaches rules and regulatory guidance concerning operational risk models, RWA attributable to operational risk can vary substantially from period-to-period, without direct correlation to the effects of a particular loss event on our results of operations and financial condition and impacting dates and periods that may differ from the dates and periods as of and during which the loss event is reflected in our financial statements, with the timing and categorization dependent on the processes for model updates and, if applicable, model revalidation and regulatory review and related supervisory processes. An individual loss event can have a significant effect on the output of our operational RWA under the advanced approaches depending on the severity of the loss event and its categorization among the seven Basel-defined UOMs. (4) Minimum requirements include a CCB of 2.5% and a SCB of 2.5% for the advanced approaches and the standardized approach, respectively, a G-SIB surcharge of 1.0% and a countercyclical buffer of 0%. On June 28, 2023, we were notified by the Federal Reserve of the results from the 2023 supervisory stress test. Our SCB calculated under the 2023 supervisory stress test was well below the 2.5% minimum, resulting in an SCB at that floor, which will be in effect from October 1, 2023 through September 30, 2024. (5) State Street Bank is required to maintain a minimum Tier 1 leverage ratio of 5% as it is the insured depository institution subsidiary of State Street Corporation, a U.S. G-SIB. NA

Net Interest Income

Net Interest Income	3 Months Ended
	Mar. 31, 2024
Banking and Thrift, Interest [Abstract]
Net Interest Income	Net Interest Income The following table presents the components of interest income and interest expense, and related NII, for the periods indicated: Three Months Ended March 31, (In millions) 2024 2023 Interest income: Interest-bearing deposits with banks $ 998 $ 641 Investment securities: Investment securities available-for-sale 572 347 Investment securities held-to-maturity 294 321 Total investment securities 866 668 Securities purchased under resale agreements 167 76 Loans 546 397 Other interest-earning assets 312 245 Total interest income 2,889 2,027 Interest expense: Interest-bearing deposits 1,640 953 Securities sold under repurchase agreements 39 9 Short-term borrowings 101 12 Long-term debt 258 184 Other interest-bearing liabilities 135 103 Total interest expense 2,173 1,261 Net interest income $ 716 $ 766

Expenses

Expenses	3 Months Ended
	Mar. 31, 2024
Other Expenses [Abstract]
Expenses	Expenses The following table presents the components of other expenses for the periods indicated: Three Months Ended March 31, (In millions) 2024 2023 Regulatory fees and assessments (1) $ 141 $ 26 Professional services 110 106 Sales advertising and public relations 25 23 Donations 25 7 Securities processing 8 10 Bank operations 8 11 Other 101 87 Total other expenses $ 418 $ 270 (1) First quarter of 2024 other expenses included a $130 million increase to the FDIC special assessment recorded in the fourth quarter of 2023, primarily related to the increase to the FDIC’s estimate of losses to the DIF associated with the closures of Silicon Valley Bank and Signature Bank. Repositioning Charges The following table presents aggregate activity for repositioning charges for the periods indicated: (In millions) Employee Real Estate Total Accrual Balance at December 31, 2022 $ 83 $ 5 $ 88 Payments and other adjustments (14) (1) (15) Accrual Balance at March 31, 2023 $ 69 $ 4 $ 73 Accrual Balance at December 31, 2023 207 1 208 Payments and other adjustments (19) — (19) Accrual Balance at March 31, 2024 $ 188 $ 1 $ 189

Earnings Per Common Share

Earnings Per Common Share	3 Months Ended
	Mar. 31, 2024
Earnings Per Share [Abstract]
Earnings Per Common Share	Earnings Per Common Share For additional information on our EPS calculation methodologies, refer to page 177 in Note 23 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2023 Form 10-K. The following table presents the computation of basic and diluted earnings per common share for the periods indicated: Three Months Ended March 31, (Dollars in millions, except per share amounts) 2024 2023 Net income $ 463 $ 549 Less: Preferred stock dividends (45) (23) Dividends and undistributed earnings allocated to participating securities (1) — (1) Net income available to common shareholders $ 418 $ 525 Average common shares outstanding (In thousands): Basic average common shares 301,991 341,106 Effect of dilutive securities: equity-based awards 3,952 4,366 Diluted average common shares 305,943 345,472 Anti-dilutive securities (2) 1,329 23 Earnings per common share: Basic $ 1.38 $ 1.54 Diluted (3) 1.37 1.52 (1) Represents the portion of net income available to common equity allocated to participating securities, composed of unvested and fully vested SERP (supplemental executive retirement plans) shares and fully vested deferred director stock awards, which are equity-based awards that contain non-forfeitable rights to dividends, and are considered to participate with the common stock in undistributed earnings. (2) Represents equity-based awards outstanding, but not included in the computation of diluted average common shares because their effect was anti-dilutive. Additional information about equity-based awards is provided on pages 171 to 173 in Note 18 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2023 Form 10-K. (3) Calculations reflect allocation of earnings to participating securities using the two-class method, as this computation is more dilutive than the treasury stock method.

Line of Business Information

Line of Business Information	3 Months Ended
	Mar. 31, 2024
Segment Reporting [Abstract]
Line of Business Information	Line of Business Information Our operations are organized into two lines of business: Investment Servicing and Investment Management, which are defined based on products and services provided. The results of operations for these lines of business are not necessarily comparable with those of other companies, including companies in the financial services industry. For information about our two lines of business, as well as revenues, expenses and capital allocation methodologies associated with them, refer to pages 177 to 179 in Note 24 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2023 Form 10-K. The following tables summarize our line of business results for the periods indicated. The "Other" columns represent amounts that are not allocated to our two lines of business, including repositioning charges, employee costs, acquisition costs, revenue-related recoveries and certain legal accruals. Three Months Ended March 31, Investment Investment Other Total (Dollars in millions) 2024 2023 2024 2023 2024 2023 2024 2023 Servicing fees $ 1,228 $ 1,217 $ — $ — $ — $ — $ 1,228 $ 1,217 Management fees — — 510 457 — — 510 457 Foreign exchange trading services 308 321 23 21 — — 331 342 Securities finance 90 103 6 6 — — 96 109 Software and processing fees 207 165 — — — — 207 165 Other fee revenue 43 28 7 17 — — 50 45 Total fee revenue 1,876 1,834 546 501 — — 2,422 2,335 Net interest income 711 762 5 4 — — 716 766 Total revenue 2,587 2,596 551 505 — — 3,138 3,101 Provision for credit losses 27 44 — — — — 27 44 Total expenses 1,963 1,978 420 386 130 5 2,513 2,369 Income before income tax expense $ 597 $ 574 $ 131 $ 119 $ (130) $ (5) $ 598 $ 688 Pre-tax margin 23 % 22 % 24 % 24 % 19 % 22 %

Revenue from Contracts with Cus

Revenue from Contracts with Customers	3 Months Ended
	Mar. 31, 2024
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	Revenue from Contracts with Customers For additional information on the nature of services and our revenue from contracts with customers, including revenues associated with both our Investment Servicing and Investment Management lines of business, refer to pages 179 to 182 in Note 25 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2023 Form 10-K. Revenue by category In the following tables, revenue is disaggregated by our two lines of business and by revenue stream for which the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors. Three Months Ended March 31, 2024 Investment Servicing Investment Management Other Total (Dollars in millions) Topic 606 revenue All other revenue Total Topic 606 revenue All other revenue Total Topic 606 revenue All other revenue Total 2024 Servicing fees $ 1,228 $ — $ 1,228 $ — $ — $ — $ — $ — $ — $ 1,228 Management fees — — — 510 — 510 — — — 510 Foreign exchange trading services 95 213 308 23 — 23 — — — 331 Securities finance 47 43 90 — 6 6 — — — 96 Software and processing fees 155 52 207 — — — — — — 207 Other fee revenue — 43 43 — 7 7 — — — 50 Total fee revenue 1,525 351 1,876 533 13 546 — — — 2,422 Net interest income — 711 711 — 5 5 — — — 716 Total revenue $ 1,525 $ 1,062 $ 2,587 $ 533 $ 18 $ 551 $ — $ — $ — $ 3,138 Three Months Ended March 31, 2023 Investment Servicing Investment Management Other Total (Dollars in millions) Topic 606 revenue All other revenue Total Topic 606 revenue All other revenue Total Topic 606 revenue All other revenue Total 2023 Servicing fees $ 1,217 $ — $ 1,217 $ — $ — $ — $ — $ — $ — $ 1,217 Management fees — — — 457 — 457 — — — 457 Foreign exchange trading services 90 231 321 21 — 21 — — — 342 Securities finance 63 40 103 — 6 6 — — — 109 Software and processing fees 120 45 165 — — — — — — 165 Other fee revenue — 28 28 — 17 17 — — — 45 Total fee revenue 1,490 344 1,834 478 23 501 — — — 2,335 Net interest income — 762 762 — 4 4 — — — 766 Total revenue $ 1,490 $ 1,106 $ 2,596 $ 478 $ 27 $ 505 $ — $ — $ — $ 3,101 Contract balances and contract costs As of March 31, 2024 and December 31, 2023, net receivables of $2.90 billion and $2.72 billion, respectively, are included in accrued interest and fees receivable, representing amounts billed or currently billable related to revenue from contracts with customers. As performance obligations are satisfied, we have an unconditional right to payment and billing is generally performed monthly or quarterly; therefore, we do not have significant contract assets. We had $135 million and $133 million of deferred revenue as of March 31, 2024 and December 31, 2023, respectively. Deferred revenue is a contract liability which represents payments received and accounts receivable recorded in advance of providing services and is included in accrued expenses and other liabilities in the consolidated statement of condition. In the first quarter of 2024, we recognized revenue of $63 million relating to deferred revenue of $133 million as of December 31, 2023. Transaction price allocated to the remaining performance obligations represents future, non-cancelable contracted revenue that has not yet been recognized, inclusive of deferred revenue that has been invoiced and non-cancelable amounts that will be invoiced and recognized as revenue in future periods. As of March 31, 2024, total remaining non-cancelable performance obligations for services and products not yet delivered, primarily comprised of software license sales and SaaS, were approximately $1.53 billion. We expect to recognize approximately half of this amount in revenue over the next three years, with the remainder to be recognized thereafter. No adjustments are made to the promised amount of consideration for the effects of a significant financing component as the period between when we transfer a promised service to a customer and when the customer pays for that service is expected to be one year or less.

Non-U.S. Activities

Non-U.S. Activities	3 Months Ended
	Mar. 31, 2024
Segments, Geographical Areas [Abstract]
Non-U.S. Activities	Non-U.S. Activities We define our non-U.S. activities as those revenue-producing business activities that arise from clients which are generally serviced or managed outside the U.S. Due to the integrated nature of our business, precise segregation of our U.S. and non-U.S. activities is not possible. Subjective estimates, assumptions and other judgments are applied to quantify the financial results and assets related to our non-U.S. activities, including our application of funds transfer pricing, our asset and liability management policies and our allocation of certain indirect corporate expenses. Management periodically reviews and updates its processes for quantifying the financial results and assets related to our non-U.S. activities. The following table presents our U.S. and non-U.S. financial results for the periods indicated: Three Months Ended March 31, 2024 2023 (In millions) Non-U.S. (1) U.S. Total Non-U.S. (1) U.S. Total Total revenue $ 1,344 $ 1,794 $ 3,138 $ 1,283 $ 1,818 $ 3,101 Income before income tax expense 279 319 598 252 436 688 (1) Geographic mix is generally based on the domicile of the entity servicing the funds and is not necessarily representative of the underlying asset mix. Management fees generated outside the U.S. were approximately 25% of total management fees in both the first quarter of 2024 and 2023. Servicing fees generated outside the U.S. were approximately 47% and 46% of total servicing fees in the first quarter of 2024 and 2023, respectively. Non-U.S. assets were $86.40 billion and $81.76 billion as of March 31, 2024 and 2023, respectively.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Pay vs Performance Disclosure
Net income	$ 463	$ 549

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Mar. 31, 2024 shares
Trading Arrangements, by Individual
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false
Donna Milrod [Member]
Trading Arrangements, by Individual
Name	Donna Milrod
Title	Executive Vice President
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	2/29/2024
Arrangement Duration	427 days
Aggregate Available	7,545

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2024
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accounting and financial reporting policies of State Street Corporation conform to U.S. GAAP. State Street Corporation, the Parent Company, is a financial holding company headquartered in Boston, Massachusetts. Unless otherwise indicated or unless the context requires otherwise, all references in these notes to consolidated financial statements to “State Street,” “we,” “us,” “our” or similar references mean State Street Corporation and its subsidiaries on a consolidated basis, including our principal banking subsidiary, State Street Bank.
Consolidation	The consolidated financial statements accompanying these condensed notes are unaudited. In the opinion of management, all adjustments, consisting only of normal recurring adjustments, which are necessary for a fair statement of the consolidated results of operations in these financial statements, have been made. Certain previously reported amounts presented in this Form 10-Q have been reclassified to conform to current-period presentation. Events occurring subsequent to the date of our consolidated statement of condition were evaluated for potential recognition or disclosure in our consolidated financial statements through the date we filed this Form 10-Q with the SEC.
Use of Estimates	The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions in the application of certain of our significant accounting policies that may materially affect the reported amounts of assets, liabilities, equity, revenue and expenses. As a result of unanticipated events or circumstances, actual results could differ from those estimates. These accounting estimates reflect the best judgment of management, but actual results could differ. Our consolidated statement of condition as of December 31, 2023 included in the accompanying consolidated financial statements was derived from the audited financial statements as of that date, but does not include all notes required by U.S. GAAP for a complete set of consolidated financial statements.
Cash and Cash Equivalents	Cash and Cash Equivalents Sanctions programs or government intervention may inhibit our ability to access cash and due from banks in certain accounts. For example, as of March 31, 2024 and December 31, 2023, we held such accounts in Russia that were subject to sanctions restrictions, inclusive of $0.6 billion and $1.5 billion, respectively, with our subcustodian, which is an affiliate of a large multinational bank, and with western European-based clearing agencies, for a total of approximately $1.1 billion and $1.9 billion, respectively. The reduction in balances with our subcustodian in Russia was a result of various actions taken related to our contractual arrangements that resulted in the derecognition of certain cash balances and related client liabilities. Cash and due from banks is evaluated as part of our allowance for credit losses.
Recent Accounting Developments	Recent Accounting Developments Relevant standards that were recently issued but not yet adopted as of March 31, 2024: Standard Description Effective Date Effects on the financial statements or other significant matters ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures The amendments related to the rate reconciliation and income taxes paid disclosures and require disclosures of (1) consistent categories and greater disaggregation of information in the rate reconciliation and (2) income taxes paid disaggregated by jurisdiction. Additional amendments require (1) disclosures of pretax income (or loss) and income tax expense (or benefit) to be consistent with U.S. Securities and Exchange Commission regulations, and (2) remove disclosures that no longer are considered cost beneficial or relevant. Annual reporting for period ending December 31, 2025 We are currently evaluating the disclosure impact of the new standard. ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures The amendments enhance segment reporting by expanding the breadth and frequency of segment disclosures, including disclosure of (1) significant segment expenses, (2) other segment items, (3) the chief operating decision maker’s title and position and (4) how the chief operating decision maker uses the reported information to assess segment performance and how to allocate resources. The amendments also require these disclosures to be included in interim reporting. Annual reporting for period ending December 31, 2024 and for interim reporting in 2025 We are currently evaluating the disclosure impact of the new standard. Additionally, we continue to evaluate other accounting standards that were recently issued, but not yet adopted as of March 31, 2024; none are expected to have a material impact to our financial statements.
Fair Value Measurements	Fair Value Measurements We carry trading account assets and liabilities, AFS debt securities, certain equity securities and various types of derivative financial instruments, at fair value in our consolidated statement of condition on a recurring basis. Changes in the fair values of these financial assets and liabilities are recorded either as components of our consolidated statement of income or as components of AOCI within shareholders' equity in our consolidated statement of condition. We measure fair value for the above-described financial assets and liabilities in conformity with U.S. GAAP that governs the measurement of the fair value of financial instruments. Management believes that its valuation techniques and underlying assumptions used to measure fair value conform to the provisions of U.S. GAAP. We categorize the financial assets and liabilities that we carry at fair value based on a prescribed three-level valuation hierarchy. For information about our valuation techniques for financial assets and financial liabilities measured at fair value and the fair value hierarchy, refer to pages 134 to 139 in Note 2 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2023 Form 10-K.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2024
Accounting Policies [Abstract]
New Accounting Standards Issued But Not Yet Adopted	Relevant standards that were recently issued but not yet adopted as of March 31, 2024: Standard Description Effective Date Effects on the financial statements or other significant matters ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures The amendments related to the rate reconciliation and income taxes paid disclosures and require disclosures of (1) consistent categories and greater disaggregation of information in the rate reconciliation and (2) income taxes paid disaggregated by jurisdiction. Additional amendments require (1) disclosures of pretax income (or loss) and income tax expense (or benefit) to be consistent with U.S. Securities and Exchange Commission regulations, and (2) remove disclosures that no longer are considered cost beneficial or relevant. Annual reporting for period ending December 31, 2025 We are currently evaluating the disclosure impact of the new standard. ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures The amendments enhance segment reporting by expanding the breadth and frequency of segment disclosures, including disclosure of (1) significant segment expenses, (2) other segment items, (3) the chief operating decision maker’s title and position and (4) how the chief operating decision maker uses the reported information to assess segment performance and how to allocate resources. The amendments also require these disclosures to be included in interim reporting. Annual reporting for period ending December 31, 2024 and for interim reporting in 2025 We are currently evaluating the disclosure impact of the new standard.

Fair Value (Tables)

Fair Value (Tables)	3 Months Ended
	Mar. 31, 2024
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following tables present information with respect to our financial assets and liabilities carried at fair value in our consolidated statement of condition on a recurring basis as of the dates indicated: Fair Value Measurements on a Recurring Basis As of March 31, 2024 (In millions) Quoted Market Pricing Methods Pricing Methods Impact of Netting (1) Total Net Assets: Trading account assets: U.S. government securities $ 34 $ — $ — $ 34 Non-U.S. government securities — 133 — 133 Other — 593 — 593 Total trading account assets $ 34 $ 726 $ — $ 760 Available-for-sale investment securities: U.S. Treasury and federal agencies: Direct obligations $ 11,729 $ — $ — $ 11,729 Mortgage-backed securities — 11,089 — 11,089 Total U.S. Treasury and federal agencies 11,729 11,089 — 22,818 Non-U.S. debt securities: Mortgage-backed securities — 1,960 — 1,960 Asset-backed securities — 2,165 — 2,165 Non-U.S. sovereign, supranational and non-U.S. agency — 15,321 — 15,321 Other — 2,691 — 2,691 Total non-U.S. debt securities — 22,137 — 22,137 Asset-backed securities: Student loans — 108 — 108 Collateralized loan obligations — 2,751 — 2,751 Non-agency CMBS and RMBS (2) — 212 — 212 Other — 91 — 91 Total asset-backed securities — 3,162 — 3,162 State and political subdivisions — 340 — 340 Other U.S. debt securities 183 183 Total available-for-sale investment securities $ 11,729 $ 36,911 $ — $ 48,640 Other assets: Derivative instruments: Foreign exchange contracts $ — $ 13,420 $ 2 $ (8,485) $ 4,937 Interest rate contracts — 11 — (11) — Total derivative instruments — 13,431 2 (8,496) 4,937 Other 12 633 — — 645 Total assets carried at fair value $ 11,775 $ 51,701 $ 2 $ (8,496) $ 54,982 Liabilities: Accrued expenses and other liabilities: Derivative instruments: Foreign exchange contracts $ 1 $ 12,786 $ — $ (9,707) $ 3,080 Interest rate contracts — 4 — (4) — Other derivative contracts — 178 — — 178 Total derivative instruments 1 12,968 — (9,711) 3,258 Total liabilities carried at fair value $ 1 $ 12,968 $ — $ (9,711) $ 3,258 (1) Represents counterparty netting against level 2 financial assets and liabilities where a legally enforceable master netting agreement exists between us and the counterparty. Netting also reflects asset and liability reductions of $0.76 billion and $1.98 billion, respectively, for cash collateral received from and provided to derivative counterparties. (2) Consists entirely of non-agency CMBS. Fair Value Measurements on a Recurring Basis As of December 31, 2023 (In millions) Quoted Market Pricing Methods Pricing Methods Impact of Netting (1) Total Net Assets: Trading account assets: U.S. government securities $ 36 $ — $ — $ 36 Non-U.S. government securities — 138 — 138 Other — 599 — 599 Total trading account assets $ 36 $ 737 $ — $ 773 Available-for-sale investment securities: U.S. Treasury and federal agencies: Direct obligations $ 8,301 $ — $ — $ 8,301 Mortgage-backed securities — 10,755 — 10,755 Total U.S. Treasury and federal agencies 8,301 10,755 — 19,056 Non-U.S. debt securities: Mortgage-backed securities — 1,857 — 1,857 Asset-backed securities — 2,137 — 2,137 Non-U.S. sovereign, supranational and non-U.S. agency — 15,100 — 15,100 Other — 2,735 — 2,735 Total non-U.S. debt securities — 21,829 — 21,829 Asset-backed securities: Student loans — 114 — 114 Collateralized loan obligations — 2,527 — 2,527 Non-agency CMBS and RMBS (2) — 249 — 249 Other — 90 — 90 Total asset-backed securities — 2,980 — 2,980 State and political subdivisions — 355 — 355 Other U.S. debt securities — 306 — 306 Total available-for-sale investment securities $ 8,301 $ 36,225 $ — $ 44,526 Other assets: Derivative instruments: Foreign exchange contracts $ — $ 19,690 $ 4 $ (14,387) $ 5,307 Interest rate contracts — 13 — (13) — Total derivative instruments — 19,703 4 (14,400) 5,307 Other 11 640 — — 651 Total assets carried at fair value $ 8,348 $ 57,305 $ 4 $ (14,400) $ 51,257 Liabilities: Accrued expenses and other liabilities: Trading account liabilities: Derivative instruments: Foreign exchange contracts $ 1 $ 19,414 $ 1 $ (11,909) $ 7,507 Interest rate contracts 4 — — — 4 Other derivative contracts — 182 — — 182 Total derivative instruments 5 19,596 1 (11,909) 7,693 Total liabilities carried at fair value $ 5 $ 19,596 $ 1 $ (11,909) $ 7,693 (1) Represents counterparty netting against level 2 financial assets and liabilities where a legally enforceable master netting agreement exists between us and the counterparty. Netting also reflects asset and liability reductions of $3.90 billion and $1.41 billion, respectively, for cash collateral received from and provided to derivative counterparties. (2) Consists entirely of non-agency CMBS.
Carrying Value and Estimated Fair Value of Financial Instruments by Fair Value Hierarchy	The following tables present the reported amounts and estimated fair values of the financial assets and liabilities not carried at fair value, as they would be categorized within the fair value hierarchy, as of the dates indicated: Fair Value Hierarchy (In millions) Reported Amount Estimated Fair Value Quoted Market Prices in Active Markets (Level 1) Pricing Methods with Significant Observable Market Inputs (Level 2) Pricing Methods with Significant Unobservable Market Inputs (Level 3) March 31, 2024 Financial Assets: Cash and due from banks $ 3,413 $ 3,413 $ 3,413 $ — $ — Interest-bearing deposits with banks 125,486 125,486 — 125,486 — Securities purchased under resale agreements 7,489 7,489 — 7,489 — Investment securities held-to-maturity 52,914 46,823 5,918 40,905 — Net loans (1) 38,500 38,266 — 36,300 1,966 Other (2) 6,866 6,866 — 6,866 — Financial Liabilities: Deposits: Non-interest-bearing $ 37,367 $ 37,367 $ — $ 37,367 $ — Interest-bearing - U.S. 148,485 148,485 — 148,485 — Interest-bearing - non-U.S. 66,032 66,032 — 66,032 — Securities sold under repurchase agreements 3,576 3,576 — 3,576 — Other short-term borrowings 11,541 11,541 — 11,541 — Long-term debt 19,746 19,361 — 19,156 205 Other (2) 6,866 6,866 — 6,866 — (1) Includes $17 million of loans classified as held-for-sale that were measured at fair value in level 2 as of March 31, 2024. (2) Represents a portion of underlying client assets related to our prime services business, which clients have allowed us to transfer and re-pledge. Fair Value Hierarchy (In millions) Reported Amount Estimated Fair Value Quoted Market Prices in Active Markets (Level 1) Pricing Methods with Significant Observable Market Inputs (Level 2) Pricing Methods with Significant Unobservable Market Inputs (Level 3) December 31, 2023 Financial Assets: Cash and due from banks $ 4,047 $ 4,047 $ 4,047 $ — $ — Interest-bearing deposits with banks 87,665 87,665 — 87,665 — Securities purchased under resale agreements 6,692 6,692 — 6,692 — Investment securities held-to-maturity 57,117 51,503 8,409 43,094 — Net loans 36,496 36,335 — 34,308 2,027 Other (1) 6,866 6,866 — 6,866 — Financial Liabilities: Deposits: Non-interest-bearing $ 32,569 $ 32,569 $ — $ 32,569 $ — Interest-bearing - U.S. 121,738 121,738 — 121,738 — Interest-bearing - non-U.S. 66,663 66,663 — 66,663 — Securities sold under repurchase agreements 1,867 1,867 — 1,867 — Other short-term borrowings 3,660 3,660 — 3,660 — Long-term debt 18,839 18,417 — 18,216 201 Other (1) 6,866 6,866 — 6,866 — (1) Represents a portion of underlying client assets related to our prime services business, which clients have allowed us to transfer and re-pledge.

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2024
Investments, Debt and Equity Securities [Abstract]
Schedule of Marketable Securities	The following table presents the amortized cost, fair value and associated unrealized gains and losses of AFS and HTM investment securities as of the dates indicated: March 31, 2024 December 31, 2023 Amortized Gross Fair Amortized Gross Fair (In millions) Gains Losses Gains Losses Available-for-sale: U.S. Treasury and federal agencies: Direct obligations $ 11,831 $ 42 $ 144 $ 11,729 $ 8,427 $ 39 $ 165 $ 8,301 Mortgage-backed securities (1) 11,208 30 149 11,089 10,870 49 164 10,755 Total U.S. Treasury and federal agencies 23,039 72 293 22,818 19,297 88 329 19,056 Non-U.S. debt securities: Mortgage-backed securities 1,961 3 4 1,960 1,861 3 7 1,857 Asset-backed securities (2) 2,168 4 7 2,165 2,148 2 13 2,137 Non-U.S. sovereign, supranational and non-U.S. agency 15,410 30 119 15,321 15,159 73 132 15,100 Other (3) 2,690 30 29 2,691 2,733 39 37 2,735 Total non-U.S. debt securities 22,229 67 159 22,137 21,901 117 189 21,829 Asset-backed securities: Student loans (4) 107 1 — 108 113 1 — 114 Collateralized loan obligations (5) 2,749 4 2 2,751 2,530 3 6 2,527 Non-agency CMBS and RMBS (6) 212 1 1 212 252 — 3 249 Other 90 1 — 91 90 — — 90 Total asset-backed securities 3,158 7 3 3,162 2,985 4 9 2,980 State and political subdivisions 343 — 3 340 356 — 1 355 Other U.S. debt securities (7) 188 — 5 183 314 — 8 306 Total available-for-sale securities (8)(9) $ 48,957 $ 146 $ 463 $ 48,640 $ 44,853 $ 209 $ 536 $ 44,526 Held-to-maturity: U.S. Treasury and federal agencies: Direct obligations $ 6,091 $ — $ 163 $ 5,928 $ 8,584 $ — $ 163 $ 8,421 Mortgage-backed securities (10) 38,698 2 5,759 32,941 39,472 7 5,271 34,208 Total U.S. Treasury and federal agencies 44,789 2 5,922 38,869 48,056 7 5,434 42,629 Non-U.S. debt securities: Non-U.S. sovereign, supranational and non-U.S. agency 5,064 2 153 4,913 5,757 8 153 5,612 Total non-U.S. debt securities 5,064 2 153 4,913 5,757 8 153 5,612 Asset-backed securities: Student loans (4) 3,055 4 42 3,017 3,298 2 62 3,238 Non-agency CMBS and RMBS (11) 6 18 — 24 6 18 — 24 Total asset-backed securities 3,061 22 42 3,041 3,304 20 62 3,262 Total held-to-maturity securities (8)(12) $ 52,914 $ 26 $ 6,117 $ 46,823 $ 57,117 $ 35 $ 5,649 $ 51,503 (1) As of March 31, 2024 and December 31, 2023, the total fair value included $5.24 billion and $5.54 billion, respectively, of agency CMBS and $5.85 billion and $5.21 billion, respectively, of agency MBS. (2) As of March 31, 2024 and December 31, 2023, the fair value includes non-U.S. collateralized loan obligations of $1.00 billion and $1.02 billion, respectively. (3) As of March 31, 2024 and December 31, 2023, the fair value includes non-U.S. corporate bonds of $2.35 billion and $2.36 billion, respectively. (4) Primarily comprised of securities guaranteed by the federal government with respect to at least 97% of defaulted principal and accrued interest on the underlying loans. (5) Excludes collateralized loan obligations in loan form. Refer to Note 4 for additional information. (6) Consists entirely of non-agency CMBS as of both March 31, 2024 and December 31, 2023. (7) As of March 31, 2024 and December 31, 2023, the fair value of U.S. corporate bonds was $0.18 billion and $0.31 billion, respectively. (8) An immaterial amount of accrued interest related to HTM and AFS investment securities was excluded from the amortized cost basis for the periods ended March 31, 2024 and December 31, 2023. (9) As of both March 31, 2024 and December 31, 2023, we had no allowance for credit losses on AFS investment securities. (10) As of March 31, 2024 and December 31, 2023, the total amortized cost included $5.21 billion and $5.23 billion of agency CMBS, respectively. (11) Consists entirely of non-agency RMBS as of both March 31, 2024 and December 31, 2023. (12)
Schedule of Gross Pre-tax Unrealized Losses on Investment Securities	The following tables present the aggregate fair values of AFS investment securities that have been in a continuous unrealized loss position for less than 12 months, and those that have been in a continuous unrealized loss position for 12 months or longer, as of the dates indicated: March 31, 2024 Less than 12 months 12 months or longer Total (In millions) Fair Gross Fair Gross Fair Gross Available-for-sale: U.S. Treasury and federal agencies: Direct obligations $ 2,359 $ 8 $ 5,403 $ 136 $ 7,762 $ 144 Mortgage-backed securities 1,321 11 6,402 138 7,723 149 Total U.S. Treasury and federal agencies 3,680 19 11,805 274 15,485 293 Non-U.S. debt securities: Mortgage-backed securities 310 — 584 4 894 4 Asset-backed securities 126 — 917 7 1,043 7 Non-U.S. sovereign, supranational and non-U.S. agency 5,579 16 5,415 103 10,994 119 Other 66 — 720 29 786 29 Total non-U.S. debt securities 6,081 16 7,636 143 13,717 159 Asset-backed securities: Collateralized loan obligations 227 — 432 2 659 2 Non-agency CMBS and RMBS — — 119 1 119 1 Total asset-backed securities 227 — 551 3 778 3 State and political subdivisions 210 2 130 1 340 3 Other U.S. debt securities — — 183 5 183 5 Total $ 10,198 $ 37 $ 20,305 $ 426 $ 30,503 $ 463 December 31, 2023 Less than 12 months 12 months or longer Total (In millions) Fair Gross Fair Gross Fair Gross Available-for-sale: U.S. Treasury and federal agencies: Direct obligations $ 333 $ 2 $ 5,416 $ 163 $ 5,749 $ 165 Mortgage-backed securities 961 6 6,512 158 7,473 164 Total U.S. Treasury and federal agencies 1,294 8 11,928 321 13,222 329 Non-U.S. debt securities: Mortgage-backed securities 424 1 719 6 1,143 7 Asset-backed securities 358 — 1,052 13 1,410 13 Non-U.S. sovereign, supranational and non-U.S. agency 3,972 7 5,788 125 9,760 132 Other 50 — 893 37 943 37 Total non-U.S. debt securities 4,804 8 8,452 181 13,256 189 Asset-backed securities: Collateralized loan obligations 183 — 1,605 6 1,788 6 Non-agency CMBS and RMBS 35 — 180 3 215 3 Total asset-backed securities 218 — 1,785 9 2,003 9 State and political subdivisions 64 — 104 1 168 1 Other U.S. debt securities 3 — 303 8 306 8 Total $ 6,383 $ 16 $ 22,572 $ 520 $ 28,955 $ 536
Investments Classified by Contractual Maturity Date	The following table presents the amortized cost and the fair value of contractual maturities of debt investment securities as of March 31, 2024. The maturities of certain ABS, MBS and collateralized mortgage obligations are based on expected principal payments. Actual maturities may differ from these expected maturities since certain borrowers have the right to prepay obligations with or without prepayment penalties. March 31, 2024 (In millions) Under 1 Year 1 to 5 Years 6 to 10 Years Over 10 Years Total Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Available-for-sale: U.S. Treasury and federal agencies: Direct obligations $ 1,789 $ 1,788 $ 8,637 $ 8,527 $ 1,405 $ 1,414 $ — $ — $ 11,831 $ 11,729 Mortgage-backed securities 35 35 2,062 2,049 3,219 3,169 5,892 5,836 11,208 11,089 Total U.S. Treasury and federal agencies 1,824 1,823 10,699 10,576 4,624 4,583 5,892 5,836 23,039 22,818 Non-U.S. debt securities: Mortgage-backed securities 175 175 284 284 52 52 1,450 1,449 1,961 1,960 Asset-backed securities 334 332 539 538 731 730 564 565 2,168 2,165 Non-U.S. sovereign, supranational and non-U.S. agency 3,859 3,837 10,157 10,094 1,394 1,390 — — 15,410 15,321 Other 332 329 2,199 2,198 159 164 — — 2,690 2,691 Total non-U.S. debt securities 4,700 4,673 13,179 13,114 2,336 2,336 2,014 2,014 22,229 22,137 Asset-backed securities: Student loans 30 31 — — 14 14 63 63 107 108 Collateralized loan obligations 41 41 283 282 1,615 1,615 810 813 2,749 2,751 Non-agency CMBS and RMBS — — — — — — 212 212 212 212 Other — — 90 91 — — — — 90 91 Total asset-backed securities 71 72 373 373 1,629 1,629 1,085 1,088 3,158 3,162 State and political subdivisions 83 82 131 130 129 128 — — 343 340 Other U.S. debt securities 133 130 55 53 — — — — 188 183 Total $ 6,811 $ 6,780 $ 24,437 $ 24,246 $ 8,718 $ 8,676 $ 8,991 $ 8,938 $ 48,957 $ 48,640 Held-to-maturity: U.S. Treasury and federal agencies: Direct obligations $ 1,548 $ 1,525 $ 4,509 $ 4,370 $ 24 $ 23 $ 10 $ 10 $ 6,091 $ 5,928 Mortgage-backed securities 131 117 805 741 4,254 3,598 33,508 28,485 38,698 32,941 Total U.S. Treasury and federal agencies 1,679 1,642 5,314 5,111 4,278 3,621 33,518 28,495 44,789 38,869 Non-U.S. debt securities: Non-U.S. sovereign, supranational and non-U.S. agency 1,837 1,809 2,817 2,716 410 388 — — 5,064 4,913 Total non-U.S. debt securities 1,837 1,809 2,817 2,716 410 388 — — 5,064 4,913 Asset-backed securities: Student loans 196 192 336 335 426 424 2,097 2,066 3,055 3,017 Non-agency CMBS and RMBS 1 7 — — — — 5 17 6 24 Total asset-backed securities 197 199 336 335 426 424 2,102 2,083 3,061 3,041 Total $ 3,713 $ 3,650 $ 8,467 $ 8,162 $ 5,114 $ 4,433 $ 35,620 $ 30,578 $ 52,914 $ 46,823

Loans and Allowance for Credi_2

Loans and Allowance for Credit Losses (Tables)	3 Months Ended
	Mar. 31, 2024
Receivables [Abstract]
Net Loans	The following table presents our recorded investment in loans, by segment, as of the dates indicated: (In millions) March 31, 2024 December 31, 2023 Domestic (1) : Commercial and financial: Fund Finance (2) $ 13,775 $ 13,697 Leveraged loans 2,503 2,412 Overdrafts 1,584 1,225 Collateralized loan obligations in loan form 150 150 Other (3) 2,453 2,512 Commercial real estate 3,062 3,069 Total domestic $ 23,527 $ 23,065 Foreign (1) : Commercial and financial: Fund Finance (2) $ 5,207 $ 4,956 Leveraged loans 1,204 1,194 Overdrafts 2,136 1,047 Collateralized loan obligations in loan form 6,561 6,369 Total foreign 15,108 13,566 Total loans (4) 38,635 36,631 Allowance for credit losses (135) (135) Loans, net of allowance $ 38,500 $ 36,496 (1) Domestic and foreign categorization is based on the borrower’s country of domicile. (2) Fund finance loans include primarily $10.15 billion private equity capital call finance loans, $6.49 billion loans to real money funds and $1.01 billion loans to business development companies as of March 31, 2024, compared to $9.69 billion private equity capital call finance loans, $6.63 billion loans to real money funds and $1.05 billion loans to business development companies as of December 31, 2023. (3) Includes $2.17 billion securities finance loans, $276 million loans to municipalities and $4 million other loans as of March 31, 2024 and $2.23 billion securities finance loans, $276 million loans to municipalities and $5 million other loans as of December 31, 2023. (4) As of March 31, 2024, excluding overdrafts, floating rate loans totaled $31.98 billion and fixed rate loans totaled $2.93 billion. We have entered into interest rate swap agreements to hedge the forecasted cash flows associated with EURIBOR indexed floating-rate loans. See Note 10 to the consolidated financial statements in our 2023 Form 10-K for additional details.
Recorded Investment in Each Class of Total Loans and Leases by Credit Quality Indicator	The following tables present our recorded loans to counterparties by risk rating, as noted above, as of the dates indicated: March 31, 2024 Commercial and Financial Commercial Real Estate Total Loans (In millions) Investment grade $ 31,633 $ 2,293 $ 33,926 Speculative 3,646 382 4,028 Special mention 235 163 398 Substandard 29 132 161 Doubtful 13 92 105 Total (1)(2) $ 35,556 $ 3,062 $ 38,618 December 31, 2023 Commercial and Financial Commercial Real Estate Total Loans (In millions) Investment grade $ 29,737 $ 2,287 $ 32,024 Speculative 3,546 449 3,995 Special mention 242 62 304 Substandard 14 224 238 Doubtful 23 47 70 Total (1) $ 33,562 $ 3,069 $ 36,631 (1) Loans include $3.72 billion and $2.27 billion of overdrafts as of March 31, 2024 and December 31, 2023, respectively. Overdrafts are short-term in nature and do not present a significant credit risk to us. As of March 31, 2024, $3.57 billion overdrafts were investment grade and $0.15 billion overdrafts were speculative. (2) Total does not include $17 million of loans classified as held-for-sale as of March 31, 2024. The following table presents the amortized cost basis, by year of origination and credit quality indicator, as of March 31, 2024. For origination years before the fifth annual period, we present the aggregate amortized cost basis of loans. For purchased loans, the date of issuance is used to determine the year of origination, not the date of acquisition. For modified, extended or renewed lending arrangements, we evaluate whether a credit event has occurred which would consider the loan to be a new arrangement. (In millions) 2024 2023 2022 2021 2020 Prior Revolving Loans Total (1) Domestic loans: Commercial and financial: Risk Rating: Investment grade $ 1,566 $ 242 $ 120 $ 198 $ 8 $ 276 $ 15,477 $ 17,887 Speculative 523 473 204 637 104 371 54 2,366 Special mention — 26 — 96 29 16 — 167 Substandard — — — 15 — — — 15 Doubtful 8 5 — — — — — 13 Total commercial and financing $ 2,097 $ 746 $ 324 $ 946 $ 141 $ 663 $ 15,531 $ 20,448 Commercial real estate: Risk Rating: Investment grade $ 39 $ 216 $ 500 $ 465 $ 100 $ 973 $ — $ 2,293 Speculative — — 20 66 49 247 — 382 Special mention — — — — — 163 — 163 Substandard — — — — — 132 — 132 Doubtful — — — — — 92 — 92 Total commercial real estate $ 39 $ 216 $ 520 $ 531 $ 149 $ 1,607 $ — $ 3,062 Non-U.S. loans: Commercial and financial: Risk Rating: Investment grade $ 2,328 $ 1,853 $ 1,853 $ 2,633 $ — $ — $ 5,079 $ 13,746 Speculative 276 270 127 378 113 88 28 1,280 Special mention — — — 68 — — — 68 Substandard — — — — — 14 — 14 Total commercial and financing $ 2,604 $ 2,123 $ 1,980 $ 3,079 $ 113 $ 102 $ 5,107 $ 15,108 Total loans (2) $ 4,740 $ 3,085 $ 2,824 $ 4,556 $ 403 $ 2,372 $ 20,638 $ 38,618 (1) Any reserve associated with accrued interest is not material. As of March 31, 2024, accrued interest receivable of $290 million included in the amortized cost basis of loans has been excluded from the amortized cost basis within this table. (2) Total does not include $17 million of loans classified as held-for-sale as of March 31, 2024. The following table presents the amortized cost basis, by year of origination and credit quality indicator as of December 31, 2023: (In millions) 2023 2022 2021 2020 2019 Prior Revolving Loans Total (1) Domestic loans: Commercial and financial: Risk Rating: Investment grade $ 1,399 $ 120 $ 199 $ 8 $ 272 $ 5 $ 15,476 $ 17,479 Speculative 615 285 747 149 291 141 81 2,309 Special mention — 4 164 — 16 — — 184 Substandard 5 — 18 — — — — 23 Total commercial and financing $ 2,019 $ 409 $ 1,128 $ 157 $ 579 $ 146 $ 15,557 $ 19,995 Commercial real estate: Risk Rating: Investment grade $ 216 $ 500 $ 498 $ 100 $ 375 $ 598 $ — $ 2,287 Speculative — 20 31 50 49 299 — 449 Special mention — — — — 22 40 — 62 Substandard — — — — 95 129 — 224 Doubtful — — — — — 47 — 47 Total commercial real estate $ 216 $ 520 $ 529 $ 150 $ 541 $ 1,113 $ — $ 3,069 Non-U.S. loans: Commercial and financial: Risk Rating: Investment grade $ 2,943 $ 1,956 $ 2,518 $ — $ — $ — $ 4,841 $ 12,258 Speculative 394 135 481 88 109 18 12 1,237 Special mention — — 29 29 — — — 58 Substandard — — — — — 14 — 14 Total commercial and financing $ 3,337 $ 2,091 $ 3,028 $ 117 $ 109 $ 32 $ 4,853 $ 13,567 Total loans $ 5,572 $ 3,020 $ 4,685 $ 424 $ 1,229 $ 1,291 $ 20,410 $ 36,631 (1) Any reserve associated with accrued interest is not material. As of December 31, 2023, accrued interest receivable of $318 million included in the amortized cost basis of loans has been excluded from the amortized cost basis within this table.
Schedule of Activity in the Allowance for Loan Losses	The following tables present the activity in the allowance for credit losses by portfolio and class for the periods indicated: Three Months Ended March 31, 2024 Commercial and Financial (In millions) Leveraged Loans Other Loans (1) Commercial Real Estate Available-for-sale Securities Held-to-Maturity Securities Off-Balance Sheet Commitments All Other Total Allowance for credit losses: Beginning balance $ 72 $ 4 $ 60 $ — $ 1 $ 14 $ (1) $ 150 Charge-offs (6) — (25) — — — — (31) Provision 5 1 25 — — (4) — 27 Ending balance $ 71 $ 5 $ 60 $ — $ 1 $ 10 $ (1) $ 146 (1) Includes $4 million allowance for credit losses on Fund Finance loans and $1 million on other loans. Three Months Ended March 31, 2023 Commercial and Financial (In millions) Leveraged Loans Other Loans (1) Commercial Real Estate Available-for-sale Securities Off-Balance Sheet Commitments All Other Total Allowance for credit losses: Beginning balance $ 73 $ 5 $ 19 $ 2 $ 23 $ (1) $ 121 Charge-offs (3) — — — — — (3) Provision 12 (1) 10 — (7) 30 44 Ending balance $ 82 $ 4 $ 29 $ 2 $ 16 $ 29 $ 162 (1) Includes $3 million allowance for credit losses on Fund Finance loans and $1 million on other loans.

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Changes in the Carrying Amount of Goodwill	The following table presents changes in the carrying amount of goodwill during the periods indicated: (In millions) Investment Investment Total Goodwill: Ending balance December 31, 2022 $ 7,232 $ 263 $ 7,495 Acquisitions 44 — 44 Foreign currency translation 70 2 72 Ending balance December 31, 2023 $ 7,346 $ 265 $ 7,611 Acquisitions 14 — 14 Foreign currency translation (42) (1) (43) Ending balance March 31, 2024 $ 7,318 $ 264 $ 7,582
Schedule of Finite-Lived Intangible Assets	The following table presents changes in the net carrying amount of other intangible assets during the periods indicated: (In millions) Investment Servicing Investment Total Other intangible assets: Ending balance December 31, 2022 $ 1,495 $ 49 $ 1,544 Amortization (217) (22) (239) Foreign currency translation 15 — 15 Ending balance December 31, 2023 1,293 27 1,320 Acquisitions 7 — 7 Amortization (55) (5) (60) Foreign currency translation (9) — (9) Ending balance March 31, 2024 $ 1,236 $ 22 $ 1,258
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	The following table presents the gross carrying amount, accumulated amortization and net carrying amount of other intangible assets by type as of the dates indicated: March 31, 2024 Gross Accumulated Net (In millions) Other intangible assets: Client relationships $ 2,742 $ (1,833) $ 909 Technology 404 (225) 179 Core deposits 685 (521) 164 Other 84 (78) 6 Total $ 3,915 $ (2,657) $ 1,258 December 31, 2023 Gross Accumulated Net (In millions) Other intangible assets: Client relationships $ 2,761 $ (1,808) $ 953 Technology 402 (216) 186 Core deposits 690 (516) 174 Other 85 (78) 7 Total $ 3,938 $ (2,618) $ 1,320

Other Assets (Tables)

Other Assets (Tables)	3 Months Ended
	Mar. 31, 2024
Other Assets [Abstract]
Components of Other Assets	The following table presents the components of other assets as of the dates indicated: (In millions) March 31, 2024 December 31, 2023 Securities borrowed (1) $ 25,288 $ 23,131 Derivative instruments, net 4,937 5,307 Bank-owned life insurance 3,770 3,742 Investments in joint ventures and other unconsolidated entities (2) 2,989 2,981 Collateral, net 2,518 2,983 Deferred tax assets, net of valuation allowance (3) 987 1,034 Right-of-use assets 831 805 Prepaid expenses 825 598 Accounts receivable 752 611 Receivable for securities settlement 297 1,082 Income taxes receivable 238 246 Deposits with clearing organizations 59 58 Other (4) 1,977 2,228 Total $ 45,468 $ 44,806 (1) Refer to Note 8, for further information on the impact of collateral on our financial statement presentation of securities borrowing and securities lending transactions. (2) Includes equity securities without readily determinable fair values that are accounted for under the ASC 321 measurement alternative of $192 million and $183 million as of March 31, 2024 and December 31, 2023, respectively. For the three months ended March 31, 2024, no impairments were recognized in other fee revenue related to such equity securities. (3) Deferred tax assets and liabilities recorded in our consolidated statement of condition are netted within the same tax jurisdiction. (4) Includes advances of $886 million

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Notional Amounts of Outstanding Derivative Positions	The following table presents the aggregate contractual, or notional, amounts of derivative financial instruments, including those entered into for trading and asset-and-liability management activities as of the dates indicated: (In millions) March 31, 2024 December 31, 2023 Derivatives not designated as hedging instruments: Interest rate contracts: Futures $ 29,758 $ 12,668 Foreign exchange contracts: Forward, swap and spot 2,756,921 2,528,115 Options purchased 922 851 Options written 449 544 Futures 127 197 Other: Futures 145 125 Stable value contracts (1) 28,454 28,704 Deferred value awards (2) 343 289 Derivatives designated as hedging instruments: Interest rate contracts: Swap agreements 22,441 20,333 Foreign exchange contracts: Forward and swap 9,487 9,777 (1) The notional value of the stable value contracts represents our maximum exposure. However, exposure to various stable value contracts is generally contractually limited to substantially lower amounts than the notional values. (2) Represents grants of deferred value awards to employees; refer to page 156 in Note 10 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2023 Form 10-K.
Schedule of Derivative Liabilities at Fair Value	The following table presents the fair value of derivative financial instruments, excluding the impact of master netting agreements, recorded in our consolidated statement of condition as of the dates indicated. The impact of master netting agreements is provided in Note 8. Derivative Assets (1) Derivative Liabilities (2) (In millions) March 31, 2024 December 31, 2023 March 31, 2024 December 31, 2023 Derivatives not designated as hedging instruments: Foreign exchange contracts $ 13,354 $ 19,498 $ 12,785 $ 19,153 Other derivative contracts — — 178 182 Total $ 13,354 $ 19,498 $ 12,963 $ 19,335 Derivatives designated as hedging instruments: Foreign exchange contracts $ 68 $ 196 $ 2 $ 263 Interest rate contracts 11 13 4 4 Total $ 79 $ 209 $ 6 $ 267 (1) Derivative assets are included within other assets in our consolidated statement of condition. (2) Derivative liabilities are included within other liabilities in our consolidated statement of condition.
Schedule of Derivative Assets at Fair Value	The following table presents the fair value of derivative financial instruments, excluding the impact of master netting agreements, recorded in our consolidated statement of condition as of the dates indicated. The impact of master netting agreements is provided in Note 8. Derivative Assets (1) Derivative Liabilities (2) (In millions) March 31, 2024 December 31, 2023 March 31, 2024 December 31, 2023 Derivatives not designated as hedging instruments: Foreign exchange contracts $ 13,354 $ 19,498 $ 12,785 $ 19,153 Other derivative contracts — — 178 182 Total $ 13,354 $ 19,498 $ 12,963 $ 19,335 Derivatives designated as hedging instruments: Foreign exchange contracts $ 68 $ 196 $ 2 $ 263 Interest rate contracts 11 13 4 4 Total $ 79 $ 209 $ 6 $ 267 (1) Derivative assets are included within other assets in our consolidated statement of condition. (2) Derivative liabilities are included within other liabilities in our consolidated statement of condition.
Impact of Derivative Financial Instruments On Statement of Income	The following table presents the impact of our use of derivative financial instruments on our consolidated statement of income for the periods indicated: Three Months Ended March 31, 2024 2023 (In millions) Location of Gain (Loss) on Amount of Gain (Loss) on Derivative Recognized in Consolidated Statement of Income Derivatives not designated as hedging instruments: Foreign exchange contracts Foreign exchange trading services revenue $ 207 $ 232 Foreign exchange contracts Interest expense 49 5 Interest rate contracts Foreign exchange trading services revenue 7 1 Other derivative contracts Other fee revenue (2) — Other derivative contracts Compensation and employee benefits (49) (55) Total $ 212 $ 183 The following tables present the impact of our use of derivative financial instruments on our consolidated statement of income for the periods indicated: Three Months Ended March 31, Three Months Ended March 31, 2024 2023 2024 2023 (In millions) Location of Gain (Loss) on Derivative in Consolidated Statement of Income Amount of Gain Hedged Item in Fair Value Hedging Relationship Location of Gain (Loss) on Hedged Item in Consolidated Statement of Income Amount of Gain Derivatives designated as fair value hedges: Interest rate contracts Net interest income $ 102 $ (113) Available-for-sale securities (1) Net interest income $ (102) $ 113 Interest rate contracts Net interest income (60) 108 Long-term debt Net interest income 60 (108) Total $ 42 $ (5) $ (42) $ 5 (1) In the three months ended March 31, 2024, approximately $75 million of net unrealized gains on AFS investment securities designated in fair value hedges were recognized in OCI compared to $81 million of net unrealized losses in the same period of 2023. Three Months Ended March 31, Three Months Ended March 31, 2024 2023 Location of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income 2024 2023 (In millions) Amount of Gain or (Loss) Recognized in Other Comprehensive Income on Derivative Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income Derivatives designated as cash flow hedges: Interest rate contracts (1) $ (14) $ 3 Net interest income $ (55) $ (51) Foreign exchange contracts 59 16 Net interest income 254 — Total derivatives designated as cash flow hedges $ 45 $ 19 $ 199 $ (51) Derivatives designated as net investment hedges: Foreign exchange contracts $ 185 $ (41) Gains (Losses) related to investment securities, net $ — $ — Total derivatives designated as net investment hedges 185 (41) — — Total $ 230 $ (22) $ 199 $ (51) (1) As of March 31, 2024, the maximum maturity date of the underlying hedged items is approximately 5.0 years.
Schedule of Derivatives	The following table shows the carrying amount and associated cumulative basis adjustments related to the application of hedge accounting that is included in the carrying amount of hedged assets and liabilities in fair value hedging relationships: March 31, 2024 Cumulative Fair Value Hedging Adjustment Increasing (Decreasing) the Carrying Amount (In millions) Carrying Amount of Hedged Assets/Liabilities Active De-designated (1) Long-term debt $ 12,465 $ (400) $ 142 Available-for-sale securities (2)(3) 12,621 (605) 2 December 31, 2023 Cumulative Fair Value Hedging Adjustment Increasing (Decreasing) the Carrying Amount (In millions) Carrying Amount of Hedged Assets/Liabilities Active De-designated (1) Long-term debt $ 12,463 $ (340) $ 156 Available-for-sale securities (2)(3) 11,260 (503) 3 (1) Represents hedged items no longer designated in qualifying fair value hedging relationships for which an associated basis adjustment exists at the balance sheet date. (2) Included in these amounts is the amortized cost of the financial assets designated under the portfolio layer hedging relationships (hedged item is the hedged layer of a closed portfolio of financial assets expected to remain outstanding at the end of the hedging relationship). At March 31, 2024 and December 31, 2023, the amortized cost of the closed portfolios used in these hedging relationships was $667 million and $685 million, respectively, of which $400 million was designated under the portfolio layer hedging relationship for both periods. At March 31, 2024 and December 31, 2023, the cumulative adjustment associated with these hedging relationships was ($11) million and ($6) million, respectively. (3) Carrying amount represents amortized cost.

Offsetting Arrangements (Tables

Offsetting Arrangements (Tables)	3 Months Ended
	Mar. 31, 2024
Offsetting [Abstract]
Offsetting Assets	The following tables present information about the offsetting of assets related to derivative contracts and secured financing transactions, as of the dates indicated: Assets: March 31, 2024 Gross Amounts of Recognized Assets (1)(2) Gross Amounts Offset in Statement of Condition (3) Net Amounts of Assets Presented in Statement of Condition Gross Amounts Not Offset in Statement of Condition (In millions) Cash and Securities Received (4) Net Amount (5) Derivatives: Foreign exchange contracts $ 13,422 $ (7,730) $ 5,692 $ — $ 5,692 Interest rate contracts (6) 11 (4) 7 — 7 Cash collateral and securities netting NA (762) (762) (376) (1,138) Total derivatives 13,433 (8,496) 4,937 (376) 4,561 Other financial instruments: Resale agreements and securities borrowing (7)(8) 236,786 (204,009) 32,777 (31,146) 1,631 Total derivatives and other financial instruments $ 250,219 $ (212,505) $ 37,714 $ (31,522) $ 6,192 Assets: December 31, 2023 Gross Amounts of Recognized Assets (1)(2) Gross Amounts Offset in Statement of Condition (3) Net Amounts of Assets Presented in Statement of Condition Gross Amounts Not Offset in Statement of Condition (In millions) Cash and Securities Received (4) Net Amount (5) Derivatives: Foreign exchange contracts $ 19,694 $ (10,496) $ 9,198 $ — $ 9,198 Interest rate contracts (6) 13 — 13 — 13 Cash collateral and securities netting NA (3,904) (3,904) (1,069) (4,973) Total derivatives 19,707 (14,400) 5,307 (1,069) 4,238 Other financial instruments: Resale agreements and securities borrowing (7)(8) 230,384 (200,561) 29,823 (28,016) 1,807 Total derivatives and other financial instruments $ 250,091 $ (214,961) $ 35,130 $ (29,085) $ 6,045 (1) Amounts include all transactions regardless of whether or not they are subject to an enforceable netting arrangement. (2) Refer to Note 1 and Note 2 for additional information about the measurement basis of derivative instruments. (3) Amounts subject to netting arrangements which have been determined to be legally enforceable and eligible for netting in the consolidated statement of condition. (4) Includes securities in connection with our securities borrowing transactions. (5) Includes amounts secured by collateral not determined to be subject to enforceable netting arrangements. (6) Variation margin payments presented as settlements rather than collateral. (7) Included in the $32.78 billion as of March 31, 2024 were $7.49 billion of resale agreements and $25.29 billion of collateral provided related to securities borrowing. Included in the $29.82 billion as of December 31, 2023 were $6.69 billion of resale agreements and $23.13 billion of collateral provided related to securities borrowing. Resale agreements and collateral provided related to securities borrowing were recorded in securities purchased under resale agreements and other assets, respectively, in our consolidated statement of condition. Refer to Note 9 for additional information with respect to principal securities finance transactions. (8) Offsetting of resale agreements primarily relates to our involvement in FICC, where we settle transactions on a net basis for payment and delivery through the Fedwire system. NA Not applicable
Offsetting Liabilities	The following tables present information about the offsetting of liabilities related to derivative contracts and secured financing transactions, as of the dates indicated: Liabilities: March 31, 2024 Gross Amounts of Recognized Liabilities (1)(2) Gross Amounts Offset in Statement of Condition (3) Net Amounts of Liabilities Presented in Statement of Condition Gross Amounts Not Offset in Statement of Condition (In millions) Cash and Securities Received (4) Net Amount (5) Derivatives: Foreign exchange contracts $ 12,787 $ (7,730) $ 5,057 $ — $ 5,057 Interest rate contracts (6) 4 (4) — — — Other derivative contracts 178 — 178 — 178 Cash collateral and securities netting NA (1,977) (1,977) (550) (2,527) Total derivatives 12,969 (9,711) 3,258 (550) 2,708 Other financial instruments: Repurchase agreements and securities lending (7)(8) 221,325 (204,009) 17,316 (16,752) 564 Total derivatives and other financial instruments $ 234,294 $ (213,720) $ 20,574 $ (17,302) $ 3,272 Liabilities: December 31, 2023 Gross Amounts of Recognized Liabilities (1)(2) Gross Amounts Offset in Statement of Condition (3) Net Amounts of Liabilities Presented in Statement of Condition Gross Amounts Not Offset in Statement of Condition (In millions) Cash and Securities Received (4) Net Amount (5) Derivatives: Foreign exchange contracts $ 19,416 $ (10,496) $ 8,920 $ — $ 8,920 Interest rate contracts (6) 4 — 4 — 4 Other derivative contracts 182 — 182 — 182 Cash collateral and securities netting NA (1,413) (1,413) (633) (2,046) Total derivatives 19,602 (11,909) 7,693 (633) 7,060 Other financial instruments: Repurchase agreements and securities lending (7)(8) 214,362 (200,561) 13,801 (13,306) 495 Total derivatives and other financial instruments $ 233,964 $ (212,470) $ 21,494 $ (13,939) $ 7,555 (1) Amounts include all transactions regardless of whether or not they are subject to an enforceable netting arrangement. (2) Refer to Note 1 and Note 2 for additional information about the measurement basis of derivative instruments. (3) Amounts subject to netting arrangements which have been determined to be legally enforceable and eligible for netting in the consolidated statement of condition. (4) Includes securities provided in connection with our securities lending transactions. (5) Includes amounts secured by collateral not determined to be subject to enforceable netting arrangements. (6) Variation margin payments presented as settlements rather than collateral. (7) Included in the $17.32 billion as of March 31, 2024 were $3.58 billion of repurchase agreements and $13.74 billion of collateral received related to securities lending transactions. Included in the $13.80 billion as of December 31, 2023 were $1.87 billion of repurchase agreements and $11.93 billion of collateral received related to securities lending transactions. Repurchase agreements and collateral received related to securities lending were recorded in securities sold under repurchase agreements and accrued expenses and other liabilities, respectively, in our consolidated statement of condition. Refer to Note 9 for additional information with respect to principal securities finance transactions. (8) Offsetting of repurchase agreements primarily relates to our involvement in FICC, where we settle transactions on a net basis for payment and delivery through the Fedwire system. NA Not applicable
Securities Sold and Securities Loaned Under Repurchase Agreements	The following table summarizes our repurchase agreements and securities lending transactions by category of collateral pledged and remaining maturity of these agreements, as of the periods indicated: As of March 31, 2024 As of December 31, 2023 (In millions) Overnight and Continuous Up to 30 Days 30-90 days Greater than 90 Days Total Overnight and Continuous Up to 30 Days 30-90 days Greater than 90 Days Total Repurchase agreements: U.S. Treasury and agency securities $ 199,053 $ 254 $ 929 $ 2,064 $ 202,300 $ 196,212 $ — $ 185 $ 1,360 $ 197,757 Total 199,053 254 929 2,064 202,300 196,212 — 185 1,360 197,757 Securities lending transactions: US Treasury and agency securities 4 — — — 4 6 — — — 6 Corporate debt securities 252 — 13 — 265 278 — 3 — 281 Equity securities 9,201 18 58 2,613 11,890 7,128 20 13 2,291 9,452 Other (1) 6,866 — — — 6,866 6,866 — — — 6,866 Total 16,323 18 71 2,613 19,025 14,278 20 16 2,291 16,605 Gross amount of recognized liabilities for repurchase agreements and securities lending $ 215,376 $ 272 $ 1,000 $ 4,677 $ 221,325 $ 210,490 $ 20 $ 201 $ 3,651 $ 214,362 (1) Represents a security interest in underlying client assets related to our prime services business, which clients have allowed us to transfer and re-pledge.

Commitments and Guarantees (Tab

Commitments and Guarantees (Tables)	3 Months Ended
	Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Schedule of Guarantor Obligations	The following table presents the aggregate gross contractual amounts of our off-balance sheet commitments and guarantees, as of the dates indicated: (In millions) March 31, 2024 December 31, 2023 Commitments: Unfunded credit facilities $ 34,569 $ 34,197 Guarantees (1) : Indemnified securities financing $ 326,375 $ 279,916 Standby letters of credit 1,491 1,510 (1) The potential losses associated with these guarantees equal the gross contractual amounts and do not consider the value of any collateral or reflect any participations to independent third parties.
Schedule of Repurchase Agreements	The following table summarizes the aggregate fair values of indemnified securities financing and related collateral, as well as collateral invested in indemnified repurchase agreements, as of the dates indicated: (In millions) March 31, 2024 December 31, 2023 Fair value of indemnified securities financing $ 326,375 $ 279,916 Fair value of cash and securities held by us, as agent, as collateral for indemnified securities financing 341,903 293,855 Fair value of collateral for indemnified securities financing invested in indemnified repurchase agreements 69,197 59,028 Fair value of cash and securities held by us or our agents as collateral for investments in indemnified repurchase agreements 73,975 63,105

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	3 Months Ended
	Mar. 31, 2024
Equity Method Investments and Joint Ventures [Abstract]
Schedule of Variable Interest Entities	The following table presents the impact of our tax credit programs for which we have elected to apply proportional amortization accounting on our consolidated statement of income for the periods indicated: (In millions) Three Months Ended March 31, 2024 Income (loss) recorded on investments within other fee revenue $ 4 Income recorded in total revenue 4 Tax credits and benefits recognized in income tax expense 56 Proportional amortization recognized in income tax expense (44) Net benefits included in income tax expense 12 Net benefit attributable to tax-advantaged investments included in the consolidated statement of income $ 16

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2024
Equity [Abstract]
Schedule of Preferred Shares	The following table summarizes selected terms of each of the series of the preferred stock issued and outstanding as of March 31, 2024: Preferred Stock (1) : Issuance Date Depositary Shares Issued Amount outstanding (in millions) Ownership Interest Per Depositary Share Liquidation Preference Per Share Liquidation Preference Per Depositary Share Per Annum Dividend Rate Dividend Payment Frequency Carrying Value as of March 31, 2024 Redemption Date (2) Series G April 2016 20,000,000 $ 500 1/4,000th 100,000 25 5.35% (3) Quarterly $ 493 March 15, 2026 Series H September 2018 500,000 500 1/100th 100,000 1,000 Floating rate equal to the three-month CME term SOFR plus 2.801%, or 8.185% effective December 15, 2023 Semi-annually 494 December 15, 2023 Series I January 2024 1,500,000 1,500 1/100th 100,000 1,000 6.700% to but excluding March 15, 2029, then a floating rate equal to the five-year U.S. Treasury rate plus 2.613% Quarterly 1,481 March 15, 2029 (1) The preferred stock and corresponding depositary shares may be redeemed at our option in whole, but not in part, prior to the redemption date upon the occurrence of a regulatory capital treatment event, as defined in the certificate of designation, at a redemption price equal to the liquidation price per share and liquidation price per depositary share plus any declared and unpaid dividends, without accumulation of any undeclared dividends. (2) On the redemption date, or any dividend payment date thereafter, the preferred stock and corresponding depositary shares may be redeemed by us, in whole or in part, at the liquidation price per share and liquidation price per depositary share plus any declared and unpaid dividends, without accumulation of any undeclared dividends. (3)
Dividends Declared	The following tables present the dividends declared for each of the series of preferred stock issued and outstanding for the periods indicated: Three Months Ended March 31, 2024 2023 (Dollars in millions, except per share amounts) Dividends Declared per Share Dividends Declared per Depositary Share Total Dividends Declared per Share Dividends Declared per Depositary Share Total Preferred Stock: Series D $ 1,475 $ 0.37 $ 11 $ 1,475 $ 0.37 $ 11 Series F 2,336 23.36 6 2,092 20.92 5 Series G 1,338 0.33 7 1,338 0.33 7 Series H 2,069 20.69 10 — — — Total $ 34 $ 23 Three Months Ended March 31, 2024 2023 Dividends Declared per Share Total (In millions) Dividends Declared per Share Total (In millions) Common Stock $ 0.69 $ 208 $ 0.63 $ 212
Stock Repurchase Program	The table below presents the activity under our common share repurchase program for the period indicated: Three Months Ended March 31, 2024 Three Months Ended March 31, 2023 Shares Acquired Average Cost per Share Total Acquired Shares Acquired Average Cost per Share Total Acquired 2024 Program 1.4 $ 73.24 $ 100 — $ — $ — 2023 Program — — — 13.6 91.57 1,250
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table presents the after-tax components of AOCI and changes for the periods indicated, net of related taxes: (In millions) Net Unrealized Gains (Losses) on Cash Flow Hedges Net Unrealized Gains (Losses) on Investment Securities (1) Net Unrealized Losses on Retirement Plans Foreign Currency Translation Net Unrealized Gains (Losses) on Hedges of Net Investments in Non-U.S. Subsidiaries Total Balance as of December 31, 2022 $ (359) $ (1,817) $ (143) $ (1,751) $ 359 $ (3,711) Other comprehensive income (loss) before reclassifications 14 194 — 172 (42) 338 Increase (decrease) due to amounts reclassified from accumulated other comprehensive income 37 52 12 — — 101 Other comprehensive income (loss) 51 246 12 172 (42) 439 Balance as of March 31, 2023 $ (308) $ (1,571) $ (131) $ (1,579) $ 317 $ (3,272) Balance as of December 31, 2023 $ (131) $ (947) $ (145) $ (1,400) $ 269 $ (2,354) Other comprehensive income (loss) before reclassifications 34 (30) 6 (292) 185 (97) Increase (decrease) due to amounts reclassified from accumulated other comprehensive income (147) 228 1 — — 82 Other comprehensive income (loss) (113) 198 7 (292) 185 (15) Balance as of March 31, 2024 $ (244) $ (749) $ (138) $ (1,692) $ 454 $ (2,369) (1) Includes after-tax net unamortized unrealized gains (losses) of ($492) million and ($530) million as of March 31, 2024 and December 31, 2023, respectively, related to AFS investment securities previously transferred to HTM.
Schedule of Reclassifications Out of AOCI	The following tables present after-tax reclassifications into earnings for the periods indicated: Three Months Ended March 31, 2024 2023 (In millions) Amounts Reclassified into Earnings Affected Line Item in Consolidated Statement of Income Investment securities: Losses reclassified from accumulated other comprehensive income into income, net of related taxes of $83 and $19, respectively $ 228 $ 52 Net interest income Cash flow hedges: Losses (gains) reclassified from accumulated other comprehensive income into income, net of related taxes of $(52) and $14, respectively (147) 37 Net interest income Retirement plans: Amortization of actuarial losses, net of related taxes of $0 and $5, respectively 1 12 Compensation and employee benefits expenses Total amounts reclassified from accumulated other comprehensive income $ 82 $ 101

Regulatory Capital (Tables)

Regulatory Capital (Tables)	3 Months Ended
	Mar. 31, 2024
Banking and Thrift, Other Disclosure [Abstract]
Schedule of Regulatory Capital	The following table presents the regulatory capital structure, total RWA, related regulatory capital ratios and the minimum required regulatory capital ratios for us and State Street Bank as of the dates indicated. State Street Corporation State Street Bank (Dollars in millions) Basel III Advanced Approaches March 31, 2024 Basel III Standardized Approach March 31, 2024 Basel III Advanced Approaches December 31, 2023 Basel III Standardized Approach December 31, 2023 Basel III Advanced Approaches March 31, 2024 Basel III Standardized Approach March 31, 2024 Basel III Advanced Approaches December 31, 2023 Basel III Standardized Approach December 31, 2023 Common shareholders' equity: Common stock and related surplus $ 11,228 $ 11,228 $ 11,245 $ 11,245 $ 13,333 $ 13,333 $ 13,033 $ 13,033 Retained earnings 28,166 28,166 27,957 27,957 14,888 14,888 14,454 14,454 Accumulated other comprehensive income (loss) (2,369) (2,369) (2,354) (2,354) (2,094) (2,094) (2,097) (2,097) Treasury stock, at cost (15,060) (15,060) (15,025) (15,025) — — — — Total 21,965 21,965 21,823 21,823 26,127 26,127 25,390 25,390 Regulatory capital adjustments: Goodwill and other intangible assets, net of associated deferred tax liabilities (8,380) (8,380) (8,470) (8,470) (8,107) (8,107) (8,208) (8,208) Other adjustments (1) (418) (418) (382) (382) (321) (321) (298) (298) Common equity tier 1 capital 13,167 13,167 12,971 12,971 17,699 17,699 16,884 16,884 Preferred stock 2,468 2,468 1,976 1,976 — — — — Tier 1 capital 15,635 15,635 14,947 14,947 17,699 17,699 16,884 16,884 Qualifying subordinated long-term debt 1,869 1,869 1,870 1,870 535 535 536 536 Allowance for credit losses — 146 — 150 — 146 — 150 Total capital $ 17,504 $ 17,650 $ 16,817 $ 16,967 $ 18,234 $ 18,380 $ 17,420 $ 17,570 Risk-weighted assets: Credit risk (2) $ 61,787 $ 116,388 $ 61,210 $ 109,228 $ 54,966 $ 114,292 $ 54,942 $ 107,067 Operational risk (3) 48,149 NA 43,768 NA 47,044 NA 42,297 NA Market risk 2,225 2,225 2,475 2,475 2,225 2,225 2,475 2,475 Total risk-weighted assets $ 112,161 $ 118,613 $ 107,453 $ 111,703 $ 104,235 $ 116,517 $ 99,714 $ 109,542 Adjusted quarterly average assets $ 289,772 $ 289,772 $ 269,807 $ 269,807 $ 286,577 $ 286,577 $ 266,818 $ 266,818 Capital Ratios: 2024 Minimum Requirements (4) 2023 Minimum Requirements (4) Common equity tier 1 capital 8.0 % 8.0 % 11.7 % 11.1 % 12.1 % 11.6 % 17.0 % 15.2 % 16.9 % 15.4 % Tier 1 capital 9.5 9.5 13.9 13.2 13.9 13.4 17.0 15.2 16.9 15.4 Total capital 11.5 11.5 15.6 14.9 15.7 15.2 17.5 15.8 17.5 16.0 Tier 1 leverage (5) 4.0 4.0 5.4 5.4 5.5 5.5 6.2 6.2 6.3 6.3 (1) Other adjustments within CET1 capital primarily include AOCI hedges that are not recognized at fair value on the balance sheet, the overfunded portion of our defined benefit pension plan obligation net of associated deferred tax liabilities, disallowed deferred tax assets, and other required credit risk-based deductions. (2) Under the advanced approaches, credit risk RWA includes a CVA which reflects the risk of potential fair value adjustments for credit risk reflected in our valuation of over-the-counter derivative contracts. We used a simple CVA approach in conformity with the Basel III advanced approaches. (3) Under the current advanced approaches rules and regulatory guidance concerning operational risk models, RWA attributable to operational risk can vary substantially from period-to-period, without direct correlation to the effects of a particular loss event on our results of operations and financial condition and impacting dates and periods that may differ from the dates and periods as of and during which the loss event is reflected in our financial statements, with the timing and categorization dependent on the processes for model updates and, if applicable, model revalidation and regulatory review and related supervisory processes. An individual loss event can have a significant effect on the output of our operational RWA under the advanced approaches depending on the severity of the loss event and its categorization among the seven Basel-defined UOMs. (4) Minimum requirements include a CCB of 2.5% and a SCB of 2.5% for the advanced approaches and the standardized approach, respectively, a G-SIB surcharge of 1.0% and a countercyclical buffer of 0%. On June 28, 2023, we were notified by the Federal Reserve of the results from the 2023 supervisory stress test. Our SCB calculated under the 2023 supervisory stress test was well below the 2.5% minimum, resulting in an SCB at that floor, which will be in effect from October 1, 2023 through September 30, 2024. (5) State Street Bank is required to maintain a minimum Tier 1 leverage ratio of 5% as it is the insured depository institution subsidiary of State Street Corporation, a U.S. G-SIB. NA

Net Interest Income (Tables)

Net Interest Income (Tables)	3 Months Ended
	Mar. 31, 2024
Banking and Thrift, Interest [Abstract]
Components of Interest Revenue and Interest Expense	The following table presents the components of interest income and interest expense, and related NII, for the periods indicated: Three Months Ended March 31, (In millions) 2024 2023 Interest income: Interest-bearing deposits with banks $ 998 $ 641 Investment securities: Investment securities available-for-sale 572 347 Investment securities held-to-maturity 294 321 Total investment securities 866 668 Securities purchased under resale agreements 167 76 Loans 546 397 Other interest-earning assets 312 245 Total interest income 2,889 2,027 Interest expense: Interest-bearing deposits 1,640 953 Securities sold under repurchase agreements 39 9 Short-term borrowings 101 12 Long-term debt 258 184 Other interest-bearing liabilities 135 103 Total interest expense 2,173 1,261 Net interest income $ 716 $ 766

Expenses (Tables)

Expenses (Tables)	3 Months Ended
	Mar. 31, 2024
Other Expenses [Abstract]
Schedule of Expenses	The following table presents the components of other expenses for the periods indicated: Three Months Ended March 31, (In millions) 2024 2023 Regulatory fees and assessments (1) $ 141 $ 26 Professional services 110 106 Sales advertising and public relations 25 23 Donations 25 7 Securities processing 8 10 Bank operations 8 11 Other 101 87 Total other expenses $ 418 $ 270 (1) First quarter of 2024 other expenses included a $130 million increase to the FDIC special assessment recorded in the fourth quarter of 2023, primarily related to the increase to the FDIC’s estimate of losses to the DIF associated with the closures of Silicon Valley Bank and Signature Bank.
Restructuring and Related Costs	The following table presents aggregate activity for repositioning charges for the periods indicated: (In millions) Employee Real Estate Total Accrual Balance at December 31, 2022 $ 83 $ 5 $ 88 Payments and other adjustments (14) (1) (15) Accrual Balance at March 31, 2023 $ 69 $ 4 $ 73 Accrual Balance at December 31, 2023 207 1 208 Payments and other adjustments (19) — (19) Accrual Balance at March 31, 2024 $ 188 $ 1 $ 189

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	3 Months Ended
	Mar. 31, 2024
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings Per Share	The following table presents the computation of basic and diluted earnings per common share for the periods indicated: Three Months Ended March 31, (Dollars in millions, except per share amounts) 2024 2023 Net income $ 463 $ 549 Less: Preferred stock dividends (45) (23) Dividends and undistributed earnings allocated to participating securities (1) — (1) Net income available to common shareholders $ 418 $ 525 Average common shares outstanding (In thousands): Basic average common shares 301,991 341,106 Effect of dilutive securities: equity-based awards 3,952 4,366 Diluted average common shares 305,943 345,472 Anti-dilutive securities (2) 1,329 23 Earnings per common share: Basic $ 1.38 $ 1.54 Diluted (3) 1.37 1.52 (1) Represents the portion of net income available to common equity allocated to participating securities, composed of unvested and fully vested SERP (supplemental executive retirement plans) shares and fully vested deferred director stock awards, which are equity-based awards that contain non-forfeitable rights to dividends, and are considered to participate with the common stock in undistributed earnings. (2) Represents equity-based awards outstanding, but not included in the computation of diluted average common shares because their effect was anti-dilutive. Additional information about equity-based awards is provided on pages 171 to 173 in Note 18 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2023 Form 10-K. (3) Calculations reflect allocation of earnings to participating securities using the two-class method, as this computation is more dilutive than the treasury stock method.

Line of Business Information (T

Line of Business Information (Tables)	3 Months Ended
	Mar. 31, 2024
Segment Reporting [Abstract]
Summary of Line of Business Results	The following tables summarize our line of business results for the periods indicated. The "Other" columns represent amounts that are not allocated to our two lines of business, including repositioning charges, employee costs, acquisition costs, revenue-related recoveries and certain legal accruals. Three Months Ended March 31, Investment Investment Other Total (Dollars in millions) 2024 2023 2024 2023 2024 2023 2024 2023 Servicing fees $ 1,228 $ 1,217 $ — $ — $ — $ — $ 1,228 $ 1,217 Management fees — — 510 457 — — 510 457 Foreign exchange trading services 308 321 23 21 — — 331 342 Securities finance 90 103 6 6 — — 96 109 Software and processing fees 207 165 — — — — 207 165 Other fee revenue 43 28 7 17 — — 50 45 Total fee revenue 1,876 1,834 546 501 — — 2,422 2,335 Net interest income 711 762 5 4 — — 716 766 Total revenue 2,587 2,596 551 505 — — 3,138 3,101 Provision for credit losses 27 44 — — — — 27 44 Total expenses 1,963 1,978 420 386 130 5 2,513 2,369 Income before income tax expense $ 597 $ 574 $ 131 $ 119 $ (130) $ (5) $ 598 $ 688 Pre-tax margin 23 % 22 % 24 % 24 % 19 % 22 %

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	3 Months Ended
	Mar. 31, 2024
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	In the following tables, revenue is disaggregated by our two lines of business and by revenue stream for which the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors. Three Months Ended March 31, 2024 Investment Servicing Investment Management Other Total (Dollars in millions) Topic 606 revenue All other revenue Total Topic 606 revenue All other revenue Total Topic 606 revenue All other revenue Total 2024 Servicing fees $ 1,228 $ — $ 1,228 $ — $ — $ — $ — $ — $ — $ 1,228 Management fees — — — 510 — 510 — — — 510 Foreign exchange trading services 95 213 308 23 — 23 — — — 331 Securities finance 47 43 90 — 6 6 — — — 96 Software and processing fees 155 52 207 — — — — — — 207 Other fee revenue — 43 43 — 7 7 — — — 50 Total fee revenue 1,525 351 1,876 533 13 546 — — — 2,422 Net interest income — 711 711 — 5 5 — — — 716 Total revenue $ 1,525 $ 1,062 $ 2,587 $ 533 $ 18 $ 551 $ — $ — $ — $ 3,138 Three Months Ended March 31, 2023 Investment Servicing Investment Management Other Total (Dollars in millions) Topic 606 revenue All other revenue Total Topic 606 revenue All other revenue Total Topic 606 revenue All other revenue Total 2023 Servicing fees $ 1,217 $ — $ 1,217 $ — $ — $ — $ — $ — $ — $ 1,217 Management fees — — — 457 — 457 — — — 457 Foreign exchange trading services 90 231 321 21 — 21 — — — 342 Securities finance 63 40 103 — 6 6 — — — 109 Software and processing fees 120 45 165 — — — — — — 165 Other fee revenue — 28 28 — 17 17 — — — 45 Total fee revenue 1,490 344 1,834 478 23 501 — — — 2,335 Net interest income — 762 762 — 4 4 — — — 766 Total revenue $ 1,490 $ 1,106 $ 2,596 $ 478 $ 27 $ 505 $ — $ — $ — $ 3,101

Non-U.S. Activities (Tables)

Non-U.S. Activities (Tables)	3 Months Ended
	Mar. 31, 2024
Segments, Geographical Areas [Abstract]
Schedule of Results from Non-U.S. Operations	The following table presents our U.S. and non-U.S. financial results for the periods indicated: Three Months Ended March 31, 2024 2023 (In millions) Non-U.S. (1) U.S. Total Non-U.S. (1) U.S. Total Total revenue $ 1,344 $ 1,794 $ 3,138 $ 1,283 $ 1,818 $ 3,101 Income before income tax expense 279 319 598 252 436 688 (1) Geographic mix is generally based on the domicile of the entity servicing the funds and is not necessarily representative of the underlying asset mix.

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Cash and Cash Equivalents [Line Items]
Cash and due from banks	$ 3,413	$ 4,047
Russia
Cash and Cash Equivalents [Line Items]
Cash and due from banks	600	1,500
Western Europe
Cash and Cash Equivalents [Line Items]
Cash and due from banks	$ 1,100	$ 1,900

Fair Value - Schedule of Fair V

Fair Value - Schedule of Fair Value Measurements on a Recurring Basis (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	$ 760	$ 773
Available-for-sale investment securities:	48,640	44,526
Bank-owned life insurance	4,937	5,307
Derivative asset, collateral, cash offset	762	3,904
Derivative liability, collateral, cash offset	1,977	1,413
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	760	773
Available-for-sale investment securities:	48,640	44,526
Derivative asset, Impact of Netting	(8,496)	(14,400)
Bank-owned life insurance	4,937	5,307
Other	645	651
Other assets, Impact of Netting	0	0
Total	54,982	51,257
Derivative liability, Impact of Netting	(9,711)	(11,909)
Derivative liabilities	3,258	7,693
Total liabilities carried at fair value	3,258	7,693
Recurring | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, Impact of Netting	(8,485)	(14,387)
Bank-owned life insurance	4,937	5,307
Derivative liability, Impact of Netting	(9,707)	(11,909)
Derivative liabilities	3,080	7,507
Recurring | Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, Impact of Netting	(11)	(13)
Bank-owned life insurance	0	0
Derivative liability, Impact of Netting	(4)	0
Derivative liabilities	0	4
Recurring | Other derivative contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability, Impact of Netting	0	0
Derivative liabilities	178	182
Recurring | U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	34	36
Recurring | Non-U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	133	138
Recurring | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	593	599
Available-for-sale investment securities:	183	306
Recurring | Direct obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	11,729	8,301
Recurring | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	11,089	10,755
Recurring | Total U.S. Treasury and federal agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	22,818	19,056
Recurring | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	1,960	1,857
Recurring | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	2,165	2,137
Recurring | Non-U.S. sovereign, supranational and non-U.S. agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	15,321	15,100
Recurring | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	2,691	2,735
Recurring | Total non-U.S. debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	22,137	21,829
Recurring | Student loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	108	114
Recurring | Collateralized loan obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	2,751	2,527
Recurring | Non-agency CMBS and RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	212	249
Recurring | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	91	90
Recurring | Total asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	3,162	2,980
Recurring | State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	340	355
Quoted Market Prices in Active Markets (Level 1) | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	34	36
Available-for-sale investment securities:	11,729	8,301
Derivative asset	0	0
Other	12	11
Total	11,775	8,348
Derivative liability	1	5
Total liabilities carried at fair value	1	5
Quoted Market Prices in Active Markets (Level 1) | Recurring | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	0	0
Derivative liability	1	1
Quoted Market Prices in Active Markets (Level 1) | Recurring | Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	0	0
Derivative liability	0	4
Quoted Market Prices in Active Markets (Level 1) | Recurring | Other derivative contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	34	36
Quoted Market Prices in Active Markets (Level 1) | Recurring | Non-U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	0	0
Available-for-sale investment securities:		0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Direct obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	11,729	8,301
Quoted Market Prices in Active Markets (Level 1) | Recurring | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Total U.S. Treasury and federal agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	11,729	8,301
Quoted Market Prices in Active Markets (Level 1) | Recurring | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Non-U.S. sovereign, supranational and non-U.S. agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Total non-U.S. debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Student loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Collateralized loan obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Non-agency CMBS and RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | Total asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Quoted Market Prices in Active Markets (Level 1) | Recurring | State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	726	737
Available-for-sale investment securities:	36,911	36,225
Derivative asset	13,431	19,703
Other	633	640
Total	51,701	57,305
Derivative liability	12,968	19,596
Total liabilities carried at fair value	12,968	19,596
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	13,420	19,690
Derivative liability	12,786	19,414
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	11	13
Derivative liability	4	0
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Other derivative contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	178	182
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	0	0
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Non-U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	133	138
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	593	599
Available-for-sale investment securities:	183	306
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Direct obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	11,089	10,755
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Total U.S. Treasury and federal agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	11,089	10,755
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	1,960	1,857
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	2,165	2,137
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Non-U.S. sovereign, supranational and non-U.S. agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	15,321	15,100
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	2,691	2,735
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Total non-U.S. debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	22,137	21,829
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Student loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	108	114
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Collateralized loan obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	2,751	2,527
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Non-agency CMBS and RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	212	249
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	91	90
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | Total asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	3,162	2,980
Pricing Methods with Significant Observable Market Inputs (Level 2) | Recurring | State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	340	355
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	0	0
Available-for-sale investment securities:	0	0
Derivative asset	2	4
Other	0	0
Total	2	4
Derivative liability	0	1
Total liabilities carried at fair value	0	1
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	2	4
Derivative liability	0	1
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	0	0
Derivative liability	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Other derivative contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Non-U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	0	0
Available-for-sale investment securities:		0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Direct obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Total U.S. Treasury and federal agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Non-U.S. sovereign, supranational and non-U.S. agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Total non-U.S. debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Student loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Collateralized loan obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Non-agency CMBS and RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | Total asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	0	0
Pricing Methods with Significant Unobservable Market Inputs (Level 3) | Recurring | State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	$ 0	$ 0

Fair Value - Carrying Value and

Fair Value - Carrying Value and Estimated Fair Value of Financial Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Financial Assets:
Cash and due from banks	$ 3,413	$ 4,047
Interest-bearing deposits with banks	125,486	87,665
Securities purchased under resale agreements	7,489	6,692
Investment securities held-to-maturity	46,823	51,503
Financial Liabilities:
Non-interest-bearing	37,367	32,569
Interest-bearing - U.S.	148,485	121,738
Interest-bearing - non-U.S.	66,032	66,663
Securities sold under repurchase agreements	3,576	1,867
Other short-term borrowings	11,541	3,660
Financing receivable, held-for-sale	17
Reported Amount
Financial Assets:
Cash and due from banks	3,413	4,047
Interest-bearing deposits with banks	125,486	87,665
Securities purchased under resale agreements	7,489	6,692
Investment securities held-to-maturity	52,914	57,117
Net loans	38,500	36,496
Other	6,866	6,866
Financial Liabilities:
Non-interest-bearing	37,367	32,569
Interest-bearing - U.S.	148,485	121,738
Interest-bearing - non-U.S.	66,032	66,663
Securities sold under repurchase agreements	3,576	1,867
Other short-term borrowings	11,541	3,660
Long-term debt	19,746	18,839
Other	6,866	6,866
Estimated Fair Value
Financial Assets:
Cash and due from banks	3,413	4,047
Interest-bearing deposits with banks	125,486	87,665
Securities purchased under resale agreements	7,489	6,692
Investment securities held-to-maturity	46,823	51,503
Net loans	38,266	36,335
Other	6,866	6,866
Financial Liabilities:
Non-interest-bearing	37,367	32,569
Interest-bearing - U.S.	148,485	121,738
Interest-bearing - non-U.S.	66,032	66,663
Securities sold under repurchase agreements	3,576	1,867
Other short-term borrowings	11,541	3,660
Long-term debt	19,361	18,417
Other	6,866	6,866
Estimated Fair Value | Quoted Market Prices in Active Markets (Level 1)
Financial Assets:
Cash and due from banks	3,413	4,047
Interest-bearing deposits with banks	0	0
Securities purchased under resale agreements	0	0
Investment securities held-to-maturity	5,918	8,409
Net loans	0	0
Other	0	0
Financial Liabilities:
Non-interest-bearing	0	0
Interest-bearing - U.S.	0	0
Interest-bearing - non-U.S.	0	0
Securities sold under repurchase agreements	0	0
Other short-term borrowings	0	0
Long-term debt	0	0
Other	0	0
Estimated Fair Value | Pricing Methods with Significant Observable Market Inputs (Level 2)
Financial Assets:
Cash and due from banks	0	0
Interest-bearing deposits with banks	125,486	87,665
Securities purchased under resale agreements	7,489	6,692
Investment securities held-to-maturity	40,905	43,094
Net loans	36,300	34,308
Other	6,866	6,866
Financial Liabilities:
Non-interest-bearing	37,367	32,569
Interest-bearing - U.S.	148,485	121,738
Interest-bearing - non-U.S.	66,032	66,663
Securities sold under repurchase agreements	3,576	1,867
Other short-term borrowings	11,541	3,660
Long-term debt	19,156	18,216
Other	6,866	6,866
Estimated Fair Value | Pricing Methods with Significant Unobservable Market Inputs (Level 3)
Financial Assets:
Cash and due from banks	0	0
Interest-bearing deposits with banks	0	0
Securities purchased under resale agreements	0	0
Investment securities held-to-maturity	0	0
Net loans	1,966	2,027
Other	0	0
Financial Liabilities:
Non-interest-bearing	0	0
Interest-bearing - U.S.	0	0
Interest-bearing - non-U.S.	0	0
Securities sold under repurchase agreements	0	0
Other short-term borrowings	0	0
Long-term debt	205	201
Other	$ 0	$ 0

Investment Securities - Schedul

Investment Securities - Schedule of Marketable Securities (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	$ 48,957,000,000	$ 44,853,000,000
Available for sale, gross unrealized gains	146,000,000	209,000,000
Available for sale, gross unrealized losses	463,000,000	536,000,000
Available-for-sale, fair value	48,640,000,000	44,526,000,000
Held to maturity, amortized cost	52,914,000,000	57,117,000,000
Investment securities held-to-maturity	46,823,000,000	51,503,000,000
Allowance for credit losses on available-for-sale securities	0	0	$ 2,000,000	$ 2,000,000
Direct obligations
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	11,831,000,000	8,427,000,000
Available for sale, gross unrealized gains	42,000,000	39,000,000
Available for sale, gross unrealized losses	144,000,000	165,000,000
Available-for-sale, fair value	11,729,000,000	8,301,000,000
Held to maturity, amortized cost	6,091,000,000	8,584,000,000
Held to maturity, gross unrealized gains	0	0
Held to maturity, gross unrealized losses	163,000,000	163,000,000
Investment securities held-to-maturity	5,928,000,000	8,421,000,000
Mortgage-backed securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	11,208,000,000	10,870,000,000
Available for sale, gross unrealized gains	30,000,000	49,000,000
Available for sale, gross unrealized losses	149,000,000	164,000,000
Available-for-sale, fair value	11,089,000,000	10,755,000,000
Held to maturity, amortized cost	38,698,000,000	39,472,000,000
Held to maturity, gross unrealized gains	2,000,000	7,000,000
Held to maturity, gross unrealized losses	5,759,000,000	5,271,000,000
Investment securities held-to-maturity	32,941,000,000	34,208,000,000
Total U.S. Treasury and federal agencies
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	23,039,000,000	19,297,000,000
Available for sale, gross unrealized gains	72,000,000	88,000,000
Available for sale, gross unrealized losses	293,000,000	329,000,000
Available-for-sale, fair value	22,818,000,000	19,056,000,000
Held to maturity, amortized cost	44,789,000,000	48,056,000,000
Held to maturity, gross unrealized gains	2,000,000	7,000,000
Held to maturity, gross unrealized losses	5,922,000,000	5,434,000,000
Investment securities held-to-maturity	38,869,000,000	42,629,000,000
Mortgage-backed securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	1,961,000,000	1,861,000,000
Available for sale, gross unrealized gains	3,000,000	3,000,000
Available for sale, gross unrealized losses	4,000,000	7,000,000
Available-for-sale, fair value	1,960,000,000	1,857,000,000
Asset-backed securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	2,168,000,000	2,148,000,000
Available for sale, gross unrealized gains	4,000,000	2,000,000
Available for sale, gross unrealized losses	7,000,000	13,000,000
Available-for-sale, fair value	2,165,000,000	2,137,000,000
Non-U.S. sovereign, supranational and non-U.S. agency
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	15,410,000,000	15,159,000,000
Available for sale, gross unrealized gains	30,000,000	73,000,000
Available for sale, gross unrealized losses	119,000,000	132,000,000
Available-for-sale, fair value	15,321,000,000	15,100,000,000
Held to maturity, amortized cost	5,064,000,000	5,757,000,000
Held to maturity, gross unrealized gains	2,000,000	8,000,000
Held to maturity, gross unrealized losses	153,000,000	153,000,000
Investment securities held-to-maturity	4,913,000,000	5,612,000,000
Other
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	2,690,000,000	2,733,000,000
Available for sale, gross unrealized gains	30,000,000	39,000,000
Available for sale, gross unrealized losses	29,000,000	37,000,000
Available-for-sale, fair value	2,691,000,000	2,735,000,000
Total non-U.S. debt securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	22,229,000,000	21,901,000,000
Available for sale, gross unrealized gains	67,000,000	117,000,000
Available for sale, gross unrealized losses	159,000,000	189,000,000
Available-for-sale, fair value	22,137,000,000	21,829,000,000
Held to maturity, amortized cost	5,064,000,000	5,757,000,000
Held to maturity, gross unrealized gains	2,000,000	8,000,000
Held to maturity, gross unrealized losses	153,000,000	153,000,000
Investment securities held-to-maturity	4,913,000,000	5,612,000,000
Student loans
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	107,000,000	113,000,000
Available for sale, gross unrealized gains	1,000,000	1,000,000
Available for sale, gross unrealized losses	0	0
Available-for-sale, fair value	108,000,000	114,000,000
Held to maturity, amortized cost	3,055,000,000	3,298,000,000
Held to maturity, gross unrealized gains	4,000,000	2,000,000
Held to maturity, gross unrealized losses	42,000,000	62,000,000
Investment securities held-to-maturity	3,017,000,000	3,238,000,000
Collateralized loan obligations
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	2,749,000,000	2,530,000,000
Available for sale, gross unrealized gains	4,000,000	3,000,000
Available for sale, gross unrealized losses	2,000,000	6,000,000
Available-for-sale, fair value	2,751,000,000	2,527,000,000
Non-agency CMBS and RMBS
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	212,000,000	252,000,000
Available for sale, gross unrealized gains	1,000,000	0
Available for sale, gross unrealized losses	1,000,000	3,000,000
Available-for-sale, fair value	212,000,000	249,000,000
Held to maturity, amortized cost	6,000,000	6,000,000
Held to maturity, gross unrealized gains	18,000,000	18,000,000
Held to maturity, gross unrealized losses	0	0
Investment securities held-to-maturity	24,000,000	24,000,000
Other
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	90,000,000	90,000,000
Available for sale, gross unrealized gains	1,000,000	0
Available for sale, gross unrealized losses	0	0
Available-for-sale, fair value	91,000,000	90,000,000
Total asset-backed securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	3,158,000,000	2,985,000,000
Available for sale, gross unrealized gains	7,000,000	4,000,000
Available for sale, gross unrealized losses	3,000,000	9,000,000
Available-for-sale, fair value	3,162,000,000	2,980,000,000
Held to maturity, amortized cost	3,061,000,000	3,304,000,000
Held to maturity, gross unrealized gains	22,000,000	20,000,000
Held to maturity, gross unrealized losses	42,000,000	62,000,000
Investment securities held-to-maturity	3,041,000,000	3,262,000,000
State and political subdivisions
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	343,000,000	356,000,000
Available for sale, gross unrealized gains	0	0
Available for sale, gross unrealized losses	3,000,000	1,000,000
Available-for-sale, fair value	340,000,000	355,000,000
Other U.S. debt securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	188,000,000	314,000,000
Available for sale, gross unrealized gains	0	0
Available for sale, gross unrealized losses	5,000,000	8,000,000
Available-for-sale, fair value	183,000,000	306,000,000
Including MMLF
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Held to maturity, amortized cost	52,914,000,000	57,117,000,000
Held to maturity, gross unrealized gains	26,000,000	35,000,000
Held to maturity, gross unrealized losses	6,117,000,000	5,649,000,000
Investment securities held-to-maturity	46,823,000,000	51,503,000,000
Non-US collateralized loan obligations
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	1,000,000,000	1,020,000,000
Non-U.S. debt securities, corporate bonds
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	2,350,000,000	2,360,000,000
US debt securities, corporate bonds
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	$ 180,000,000	310,000,000
Federal family education loan program
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Federal government credit support guarantee, percentage minimum	97%
Agency CMBS
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	$ 5,240,000,000	5,540,000,000
Held to maturity, amortized cost	5,210,000,000	5,230,000,000
Agency MBS
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	$ 5,850,000,000	$ 5,210,000,000

Investment Securities - Narrati

Investment Securities - Narrative (Details)	3 Months Ended
	Mar. 31, 2024 USD ($) security	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Allowance for credit losses on HTM investment securities	$ 1,000,000		$ 1,000,000
Allowance for credit losses on available-for-sale securities	$ 0	$ 2,000,000	0	$ 2,000,000
Percentage of investment portfolio considered investment grade	99%
Provision	$ 0
Charge-offs	0
Charge-offs	0	$ 0
Marketable securities, unrealized gain (loss)	$ (6,580,000,000)
Number of securities in loss position | security	1,731
Asset pledged as collateral
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Debt securities	$ 81,510,000,000		$ 71,300,000,000

Investment Securities - Sched_2

Investment Securities - Schedule of Gross Pre-Tax Unrealized Losses on Investment Securities (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	$ 10,198	$ 6,383
Available for sale, gross unrealized losses less than 12 months	37	16
Available for sale, fair value 12 months or longer	20,305	22,572
Available for sale, gross unrealized losses 12 months or longer	426	520
Available for sale, fair value total	30,503	28,955
Available for sale, gross unrealized losses total	463	536
Direct obligations
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	2,359	333
Available for sale, gross unrealized losses less than 12 months	8	2
Available for sale, fair value 12 months or longer	5,403	5,416
Available for sale, gross unrealized losses 12 months or longer	136	163
Available for sale, fair value total	7,762	5,749
Available for sale, gross unrealized losses total	144	165
Mortgage-backed securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	1,321	961
Available for sale, gross unrealized losses less than 12 months	11	6
Available for sale, fair value 12 months or longer	6,402	6,512
Available for sale, gross unrealized losses 12 months or longer	138	158
Available for sale, fair value total	7,723	7,473
Available for sale, gross unrealized losses total	149	164
Total U.S. Treasury and federal agencies
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	3,680	1,294
Available for sale, gross unrealized losses less than 12 months	19	8
Available for sale, fair value 12 months or longer	11,805	11,928
Available for sale, gross unrealized losses 12 months or longer	274	321
Available for sale, fair value total	15,485	13,222
Available for sale, gross unrealized losses total	293	329
Mortgage-backed securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	310	424
Available for sale, gross unrealized losses less than 12 months	0	1
Available for sale, fair value 12 months or longer	584	719
Available for sale, gross unrealized losses 12 months or longer	4	6
Available for sale, fair value total	894	1,143
Available for sale, gross unrealized losses total	4	7
Asset-backed securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	126	358
Available for sale, gross unrealized losses less than 12 months	0	0
Available for sale, fair value 12 months or longer	917	1,052
Available for sale, gross unrealized losses 12 months or longer	7	13
Available for sale, fair value total	1,043	1,410
Available for sale, gross unrealized losses total	7	13
Non-U.S. sovereign, supranational and non-U.S. agency
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	5,579	3,972
Available for sale, gross unrealized losses less than 12 months	16	7
Available for sale, fair value 12 months or longer	5,415	5,788
Available for sale, gross unrealized losses 12 months or longer	103	125
Available for sale, fair value total	10,994	9,760
Available for sale, gross unrealized losses total	119	132
Other
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	66	50
Available for sale, gross unrealized losses less than 12 months	0	0
Available for sale, fair value 12 months or longer	720	893
Available for sale, gross unrealized losses 12 months or longer	29	37
Available for sale, fair value total	786	943
Available for sale, gross unrealized losses total	29	37
Total non-U.S. debt securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	6,081	4,804
Available for sale, gross unrealized losses less than 12 months	16	8
Available for sale, fair value 12 months or longer	7,636	8,452
Available for sale, gross unrealized losses 12 months or longer	143	181
Available for sale, fair value total	13,717	13,256
Available for sale, gross unrealized losses total	159	189
Collateralized loan obligations
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	227	183
Available for sale, gross unrealized losses less than 12 months	0	0
Available for sale, fair value 12 months or longer	432	1,605
Available for sale, gross unrealized losses 12 months or longer	2	6
Available for sale, fair value total	659	1,788
Available for sale, gross unrealized losses total	2	6
Non-agency CMBS and RMBS
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	0	35
Available for sale, gross unrealized losses less than 12 months	0	0
Available for sale, fair value 12 months or longer	119	180
Available for sale, gross unrealized losses 12 months or longer	1	3
Available for sale, fair value total	119	215
Available for sale, gross unrealized losses total	1	3
Total asset-backed securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	227	218
Available for sale, gross unrealized losses less than 12 months	0	0
Available for sale, fair value 12 months or longer	551	1,785
Available for sale, gross unrealized losses 12 months or longer	3	9
Available for sale, fair value total	778	2,003
Available for sale, gross unrealized losses total	3	9
State and political subdivisions
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	210	64
Available for sale, gross unrealized losses less than 12 months	2	0
Available for sale, fair value 12 months or longer	130	104
Available for sale, gross unrealized losses 12 months or longer	1	1
Available for sale, fair value total	340	168
Available for sale, gross unrealized losses total	3	1
Other U.S. debt securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	0	3
Available for sale, gross unrealized losses less than 12 months	0	0
Available for sale, fair value 12 months or longer	183	303
Available for sale, gross unrealized losses 12 months or longer	5	8
Available for sale, fair value total	183	306
Available for sale, gross unrealized losses total	$ 5	$ 8

Investment Securities - Sched_3

Investment Securities - Schedule of Contractual Maturities of Debt Securities (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	$ 6,811
Available for sale, under 1 year, fair value	6,780
Available for sale, 1 to 5 years, amortized cost	24,437
Available for sale, 1 to 5 years, fair value	24,246
Available for sale, 6 to 10 years, amortized cost	8,718
Available for sale, 6 to 10 years, fair value	8,676
Available for sale, over 10 years, amortized cost	8,991
Available for sale, over 10 years, fair value	8,938
Available for sale, amortized cost	48,957	$ 44,853
Available for sale, fair value	48,640	44,526
Held to maturity, amortized cost	52,914	57,117
Investment securities held-to-maturity	46,823	51,503
Direct obligations
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	1,789
Available for sale, under 1 year, fair value	1,788
Available for sale, 1 to 5 years, amortized cost	8,637
Available for sale, 1 to 5 years, fair value	8,527
Available for sale, 6 to 10 years, amortized cost	1,405
Available for sale, 6 to 10 years, fair value	1,414
Available for sale, over 10 years, amortized cost	0
Available for sale, over 10 years, fair value	0
Available for sale, amortized cost	11,831	8,427
Available for sale, fair value	11,729	8,301
Held to maturity, under 1 year, amortized cost	1,548
Held to maturity, under 1 year, fair value	1,525
Held to maturity, 1 to 5 years, amortized cost	4,509
Held to maturity, 1 to 5 years, fair value	4,370
Held to maturity, 6 to 10 years, amortized cost	24
Held to maturity, 6 to 10 years, fair value	23
Held to maturity, over 10 years, amortized cost	10
Held to maturity, over 10 years, fair value	10
Held to maturity, amortized cost	6,091	8,584
Investment securities held-to-maturity	5,928	8,421
Mortgage-backed securities
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	35
Available for sale, under 1 year, fair value	35
Available for sale, 1 to 5 years, amortized cost	2,062
Available for sale, 1 to 5 years, fair value	2,049
Available for sale, 6 to 10 years, amortized cost	3,219
Available for sale, 6 to 10 years, fair value	3,169
Available for sale, over 10 years, amortized cost	5,892
Available for sale, over 10 years, fair value	5,836
Available for sale, amortized cost	11,208	10,870
Available for sale, fair value	11,089	10,755
Held to maturity, under 1 year, amortized cost	131
Held to maturity, under 1 year, fair value	117
Held to maturity, 1 to 5 years, amortized cost	805
Held to maturity, 1 to 5 years, fair value	741
Held to maturity, 6 to 10 years, amortized cost	4,254
Held to maturity, 6 to 10 years, fair value	3,598
Held to maturity, over 10 years, amortized cost	33,508
Held to maturity, over 10 years, fair value	28,485
Held to maturity, amortized cost	38,698	39,472
Investment securities held-to-maturity	32,941	34,208
Total U.S. Treasury and federal agencies
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	1,824
Available for sale, under 1 year, fair value	1,823
Available for sale, 1 to 5 years, amortized cost	10,699
Available for sale, 1 to 5 years, fair value	10,576
Available for sale, 6 to 10 years, amortized cost	4,624
Available for sale, 6 to 10 years, fair value	4,583
Available for sale, over 10 years, amortized cost	5,892
Available for sale, over 10 years, fair value	5,836
Available for sale, amortized cost	23,039	19,297
Available for sale, fair value	22,818	19,056
Held to maturity, under 1 year, amortized cost	1,679
Held to maturity, under 1 year, fair value	1,642
Held to maturity, 1 to 5 years, amortized cost	5,314
Held to maturity, 1 to 5 years, fair value	5,111
Held to maturity, 6 to 10 years, amortized cost	4,278
Held to maturity, 6 to 10 years, fair value	3,621
Held to maturity, over 10 years, amortized cost	33,518
Held to maturity, over 10 years, fair value	28,495
Held to maturity, amortized cost	44,789	48,056
Investment securities held-to-maturity	38,869	42,629
Mortgage-backed securities
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	175
Available for sale, under 1 year, fair value	175
Available for sale, 1 to 5 years, amortized cost	284
Available for sale, 1 to 5 years, fair value	284
Available for sale, 6 to 10 years, amortized cost	52
Available for sale, 6 to 10 years, fair value	52
Available for sale, over 10 years, amortized cost	1,450
Available for sale, over 10 years, fair value	1,449
Available for sale, amortized cost	1,961	1,861
Available for sale, fair value	1,960	1,857
Asset-backed securities
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	334
Available for sale, under 1 year, fair value	332
Available for sale, 1 to 5 years, amortized cost	539
Available for sale, 1 to 5 years, fair value	538
Available for sale, 6 to 10 years, amortized cost	731
Available for sale, 6 to 10 years, fair value	730
Available for sale, over 10 years, amortized cost	564
Available for sale, over 10 years, fair value	565
Available for sale, amortized cost	2,168	2,148
Available for sale, fair value	2,165	2,137
Non-U.S. sovereign, supranational and non-U.S. agency
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	3,859
Available for sale, under 1 year, fair value	3,837
Available for sale, 1 to 5 years, amortized cost	10,157
Available for sale, 1 to 5 years, fair value	10,094
Available for sale, 6 to 10 years, amortized cost	1,394
Available for sale, 6 to 10 years, fair value	1,390
Available for sale, over 10 years, amortized cost	0
Available for sale, over 10 years, fair value	0
Available for sale, amortized cost	15,410	15,159
Available for sale, fair value	15,321	15,100
Held to maturity, under 1 year, amortized cost	1,837
Held to maturity, under 1 year, fair value	1,809
Held to maturity, 1 to 5 years, amortized cost	2,817
Held to maturity, 1 to 5 years, fair value	2,716
Held to maturity, 6 to 10 years, amortized cost	410
Held to maturity, 6 to 10 years, fair value	388
Held to maturity, over 10 years, amortized cost	0
Held to maturity, over 10 years, fair value	0
Held to maturity, amortized cost	5,064	5,757
Investment securities held-to-maturity	4,913	5,612
Other
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	332
Available for sale, under 1 year, fair value	329
Available for sale, 1 to 5 years, amortized cost	2,199
Available for sale, 1 to 5 years, fair value	2,198
Available for sale, 6 to 10 years, amortized cost	159
Available for sale, 6 to 10 years, fair value	164
Available for sale, over 10 years, amortized cost	0
Available for sale, over 10 years, fair value	0
Available for sale, amortized cost	2,690	2,733
Available for sale, fair value	2,691	2,735
Total non-U.S. debt securities
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	4,700
Available for sale, under 1 year, fair value	4,673
Available for sale, 1 to 5 years, amortized cost	13,179
Available for sale, 1 to 5 years, fair value	13,114
Available for sale, 6 to 10 years, amortized cost	2,336
Available for sale, 6 to 10 years, fair value	2,336
Available for sale, over 10 years, amortized cost	2,014
Available for sale, over 10 years, fair value	2,014
Available for sale, amortized cost	22,229	21,901
Available for sale, fair value	22,137	21,829
Held to maturity, under 1 year, amortized cost	1,837
Held to maturity, under 1 year, fair value	1,809
Held to maturity, 1 to 5 years, amortized cost	2,817
Held to maturity, 1 to 5 years, fair value	2,716
Held to maturity, 6 to 10 years, amortized cost	410
Held to maturity, 6 to 10 years, fair value	388
Held to maturity, over 10 years, amortized cost	0
Held to maturity, over 10 years, fair value	0
Held to maturity, amortized cost	5,064	5,757
Investment securities held-to-maturity	4,913	5,612
Student loans
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	30
Available for sale, under 1 year, fair value	31
Available for sale, 1 to 5 years, amortized cost	0
Available for sale, 1 to 5 years, fair value	0
Available for sale, 6 to 10 years, amortized cost	14
Available for sale, 6 to 10 years, fair value	14
Available for sale, over 10 years, amortized cost	63
Available for sale, over 10 years, fair value	63
Available for sale, amortized cost	107	113
Available for sale, fair value	108	114
Held to maturity, under 1 year, amortized cost	196
Held to maturity, under 1 year, fair value	192
Held to maturity, 1 to 5 years, amortized cost	336
Held to maturity, 1 to 5 years, fair value	335
Held to maturity, 6 to 10 years, amortized cost	426
Held to maturity, 6 to 10 years, fair value	424
Held to maturity, over 10 years, amortized cost	2,097
Held to maturity, over 10 years, fair value	2,066
Held to maturity, amortized cost	3,055	3,298
Investment securities held-to-maturity	3,017	3,238
Collateralized loan obligations
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	41
Available for sale, under 1 year, fair value	41
Available for sale, 1 to 5 years, amortized cost	283
Available for sale, 1 to 5 years, fair value	282
Available for sale, 6 to 10 years, amortized cost	1,615
Available for sale, 6 to 10 years, fair value	1,615
Available for sale, over 10 years, amortized cost	810
Available for sale, over 10 years, fair value	813
Available for sale, amortized cost	2,749	2,530
Available for sale, fair value	2,751	2,527
Non-agency CMBS and RMBS
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	0
Available for sale, under 1 year, fair value	0
Available for sale, 1 to 5 years, amortized cost	0
Available for sale, 1 to 5 years, fair value	0
Available for sale, 6 to 10 years, amortized cost	0
Available for sale, 6 to 10 years, fair value	0
Available for sale, over 10 years, amortized cost	212
Available for sale, over 10 years, fair value	212
Available for sale, amortized cost	212	252
Available for sale, fair value	212	249
Held to maturity, under 1 year, amortized cost	1
Held to maturity, under 1 year, fair value	7
Held to maturity, 1 to 5 years, amortized cost	0
Held to maturity, 1 to 5 years, fair value	0
Held to maturity, 6 to 10 years, amortized cost	0
Held to maturity, 6 to 10 years, fair value	0
Held to maturity, over 10 years, amortized cost	5
Held to maturity, over 10 years, fair value	17
Held to maturity, amortized cost	6	6
Investment securities held-to-maturity	24	24
Other
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	0
Available for sale, under 1 year, fair value	0
Available for sale, 1 to 5 years, amortized cost	90
Available for sale, 1 to 5 years, fair value	91
Available for sale, 6 to 10 years, amortized cost	0
Available for sale, 6 to 10 years, fair value	0
Available for sale, over 10 years, amortized cost	0
Available for sale, over 10 years, fair value	0
Available for sale, amortized cost	90	90
Available for sale, fair value	91	90
Total asset-backed securities
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	71
Available for sale, under 1 year, fair value	72
Available for sale, 1 to 5 years, amortized cost	373
Available for sale, 1 to 5 years, fair value	373
Available for sale, 6 to 10 years, amortized cost	1,629
Available for sale, 6 to 10 years, fair value	1,629
Available for sale, over 10 years, amortized cost	1,085
Available for sale, over 10 years, fair value	1,088
Available for sale, amortized cost	3,158	2,985
Available for sale, fair value	3,162	2,980
Held to maturity, under 1 year, amortized cost	197
Held to maturity, under 1 year, fair value	199
Held to maturity, 1 to 5 years, amortized cost	336
Held to maturity, 1 to 5 years, fair value	335
Held to maturity, 6 to 10 years, amortized cost	426
Held to maturity, 6 to 10 years, fair value	424
Held to maturity, over 10 years, amortized cost	2,102
Held to maturity, over 10 years, fair value	2,083
Held to maturity, amortized cost	3,061	3,304
Investment securities held-to-maturity	3,041	3,262
State and political subdivisions
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	83
Available for sale, under 1 year, fair value	82
Available for sale, 1 to 5 years, amortized cost	131
Available for sale, 1 to 5 years, fair value	130
Available for sale, 6 to 10 years, amortized cost	129
Available for sale, 6 to 10 years, fair value	128
Available for sale, over 10 years, amortized cost	0
Available for sale, over 10 years, fair value	0
Available for sale, amortized cost	343	356
Available for sale, fair value	340	355
Other U.S. debt securities
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	133
Available for sale, under 1 year, fair value	130
Available for sale, 1 to 5 years, amortized cost	55
Available for sale, 1 to 5 years, fair value	53
Available for sale, 6 to 10 years, amortized cost	0
Available for sale, 6 to 10 years, fair value	0
Available for sale, over 10 years, amortized cost	0
Available for sale, over 10 years, fair value	0
Available for sale, amortized cost	188	314
Available for sale, fair value	183	$ 306
Total
Contractual Maturities Of Debt Investment Securities [Line Items]
Held to maturity, under 1 year, amortized cost	3,713
Held to maturity, under 1 year, fair value	3,650
Held to maturity, 1 to 5 years, amortized cost	8,467
Held to maturity, 1 to 5 years, fair value	8,162
Held to maturity, 6 to 10 years, amortized cost	5,114
Held to maturity, 6 to 10 years, fair value	4,433
Held to maturity, over 10 years, amortized cost	35,620
Held to maturity, over 10 years, fair value	30,578
Held to maturity, amortized cost	52,914
Investment securities held-to-maturity	$ 46,823

Loans and Allowance for Credi_3

Loans and Allowance for Credit Losses - Net Loans (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	$ 38,635	$ 36,631
Allowance for credit losses	(135)	(135)
Loans, net of allowance	38,500	36,496
Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	23,527	23,065
Domestic | Collateralized loan obligations in loan form
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	150	150
Non-U.S.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	15,108	13,566
Non-U.S. | Collateralized loan obligations in loan form
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	6,561	6,369
Fund Finance | Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	13,775	13,697
Fund Finance | Domestic | Private Equity Capital Call Finance Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	10,150	9,690
Fund Finance | Domestic | Real Money Funds
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	6,490	6,630
Fund Finance | Domestic | Business Development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	1,010	1,050
Fund Finance | Non-U.S.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	5,207	4,956
Leveraged loans | Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	2,503	2,412
Leveraged loans | Non-U.S.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	1,204	1,194
Overdrafts | Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	1,584	1,225
Overdrafts | Non-U.S.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	2,136	1,047
Other | Securities Finance Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	2,170	2,230
Other | Municipal Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	276	276
Other | Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	4	5
Other | Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	2,453	2,512
Commercial real estate | Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	3,062	$ 3,069
Excluding Overdrafts | Floating Rate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	31,980
Excluding Overdrafts | Fixed Rate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	$ 2,930

Loans and Allowance for Credi_4

Loans and Allowance for Credit Losses - Narrative (Details)	3 Months Ended
	Mar. 31, 2024 USD ($) loan loanSegment	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($) loan
Financing Receivable, Credit Quality Indicator [Line Items]
Number of loans and leases segments | loanSegment	2
Loans pledged as collateral	$ 38,500,000,000		$ 36,496,000,000
Number of loans on non-accrual status | loan	3		3
Nonaccrual loan value	$ 105,000,000		$ 70,000,000
Financing receivable, held-for-sale	17,000,000
Charge-offs	29,000,000
Allowance for credit losses on loans	$ 135,000,000		135,000,000
Investment grade loans	88%
Speculative grade loans	11%
Speculative senior secured loans with BB or B rating	91%
Provision for credit losses	$ 27,000,000	$ 44,000,000
Asset pledged as collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Loans pledged as collateral	13,040,000,000		$ 13,000,000,000
Leveraged Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable for sale	102,000,000
Financing receivable, held-for-sale	$ 17,000,000
Commercial and Financial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans no longer meeting similar risk of collective pool | loan	4
Loans no longer meeting similar risk of collective pool, amount	$ 43,000,000
Allowance for credit losses on loans	$ 47,000,000
Commercial Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
Loans no longer meeting similar risk of collective pool | loan	3
Loans no longer meeting similar risk of collective pool, amount	$ 224,000,000

Loans and Allowance for Credi_5

Loans and Allowance for Credit Losses - Investments by Credit Quality (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 38,618	$ 36,631
Financing receivable, held-for-sale	17
Current fiscal year	4,740	5,572
Fiscal year before current fiscal year	3,085	3,020
Two years before current fiscal year	2,824	4,685
Three years before current fiscal year	4,556	424
Four years before current fiscal year	403	1,229
Prior	2,372	1,291
Revolving Loans	20,638	20,410
Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Total	33,926	32,024
Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Total	4,028	3,995
Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total	398	304
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total	161	238
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total	105	70
Commercial and Financial
Financing Receivable, Credit Quality Indicator [Line Items]
Total	35,556	33,562
Commercial and Financial | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Total	31,633	29,737
Commercial and Financial | Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Total	3,646	3,546
Commercial and Financial | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total	235	242
Commercial and Financial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total	29	14
Commercial and Financial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total	13	23
Commercial Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
Total	3,062	3,069
Commercial Real Estate | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Total	2,293	2,287
Commercial Real Estate | Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Total	382	449
Commercial Real Estate | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total	163	62
Commercial Real Estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total	132	224
Commercial Real Estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total	92	47
Domestic | Commercial and Financial
Financing Receivable, Credit Quality Indicator [Line Items]
Total	20,448	19,995
Current fiscal year	2,097	2,019
Fiscal year before current fiscal year	746	409
Two years before current fiscal year	324	1,128
Three years before current fiscal year	946	157
Four years before current fiscal year	141	579
Prior	663	146
Revolving Loans	15,531	15,557
Domestic | Commercial and Financial | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Total	17,887	17,479
Current fiscal year	1,566	1,399
Fiscal year before current fiscal year	242	120
Two years before current fiscal year	120	199
Three years before current fiscal year	198	8
Four years before current fiscal year	8	272
Prior	276	5
Revolving Loans	15,477	15,476
Domestic | Commercial and Financial | Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Total	2,366	2,309
Current fiscal year	523	615
Fiscal year before current fiscal year	473	285
Two years before current fiscal year	204	747
Three years before current fiscal year	637	149
Four years before current fiscal year	104	291
Prior	371	141
Revolving Loans	54	81
Domestic | Commercial and Financial | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total	167	184
Current fiscal year	0	0
Fiscal year before current fiscal year	26	4
Two years before current fiscal year	0	164
Three years before current fiscal year	96	0
Four years before current fiscal year	29	16
Prior	16	0
Revolving Loans	0	0
Domestic | Commercial and Financial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total	15	23
Current fiscal year	0	5
Fiscal year before current fiscal year	0	0
Two years before current fiscal year	0	18
Three years before current fiscal year	15	0
Four years before current fiscal year	0	0
Prior	0	0
Revolving Loans	0	0
Domestic | Commercial and Financial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total	13
Current fiscal year	8
Fiscal year before current fiscal year	5
Two years before current fiscal year	0
Three years before current fiscal year	0
Four years before current fiscal year	0
Prior	0
Revolving Loans	0
Domestic | Commercial Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
Total	3,062	3,069
Current fiscal year	39	216
Fiscal year before current fiscal year	216	520
Two years before current fiscal year	520	529
Three years before current fiscal year	531	150
Four years before current fiscal year	149	541
Prior	1,607	1,113
Revolving Loans	0	0
Domestic | Commercial Real Estate | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Total	2,293	2,287
Current fiscal year	39	216
Fiscal year before current fiscal year	216	500
Two years before current fiscal year	500	498
Three years before current fiscal year	465	100
Four years before current fiscal year	100	375
Prior	973	598
Revolving Loans	0	0
Domestic | Commercial Real Estate | Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Total	382	449
Current fiscal year	0	0
Fiscal year before current fiscal year	0	20
Two years before current fiscal year	20	31
Three years before current fiscal year	66	50
Four years before current fiscal year	49	49
Prior	247	299
Revolving Loans	0	0
Domestic | Commercial Real Estate | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total	163	62
Current fiscal year	0	0
Fiscal year before current fiscal year	0	0
Two years before current fiscal year	0	0
Three years before current fiscal year	0	0
Four years before current fiscal year	0	22
Prior	163	40
Revolving Loans	0	0
Domestic | Commercial Real Estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total	132	224
Current fiscal year	0	0
Fiscal year before current fiscal year	0	0
Two years before current fiscal year	0	0
Three years before current fiscal year	0	0
Four years before current fiscal year	0	95
Prior	132	129
Revolving Loans	0	0
Domestic | Commercial Real Estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total	92	47
Current fiscal year	0	0
Fiscal year before current fiscal year	0	0
Two years before current fiscal year	0	0
Three years before current fiscal year	0	0
Four years before current fiscal year	0	0
Prior	92	47
Revolving Loans	0	0
Domestic | Fund Finance
Financing Receivable, Credit Quality Indicator [Line Items]
Overdrafts	3,720	$ 2,270
Domestic | Fund Finance | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Overdrafts	3,570
Domestic | Fund Finance | Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Overdrafts	$ 150

Loans and Allowance for Credi_6

Loans and Allowance for Credit Losses - Amortized Cost Basis (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	$ 4,740	$ 5,572
Fiscal year before current fiscal year	3,085	3,020
Two years before current fiscal year	2,824	4,685
Three years before current fiscal year	4,556	424
Four years before current fiscal year	403	1,229
Prior	2,372	1,291
Revolving Loans	20,638	20,410
Loans, gross, excluding loans classified as held-for-sale	38,618	36,631
Financing receivable, accrued interest, before allowance for credit loss	290	318
Financing receivable, held-for-sale	17
Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	33,926	32,024
Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	4,028	3,995
Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	398	304
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	161	238
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	105	70
Commercial and Financial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	35,556	33,562
Commercial and Financial | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	31,633	29,737
Commercial and Financial | Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	3,646	3,546
Commercial and Financial | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	235	242
Commercial and Financial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	29	14
Commercial and Financial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	13	23
Commercial and Financial | Domestic
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	2,097	2,019
Fiscal year before current fiscal year	746	409
Two years before current fiscal year	324	1,128
Three years before current fiscal year	946	157
Four years before current fiscal year	141	579
Prior	663	146
Revolving Loans	15,531	15,557
Loans, gross, excluding loans classified as held-for-sale	20,448	19,995
Commercial and Financial | Domestic | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	1,566	1,399
Fiscal year before current fiscal year	242	120
Two years before current fiscal year	120	199
Three years before current fiscal year	198	8
Four years before current fiscal year	8	272
Prior	276	5
Revolving Loans	15,477	15,476
Loans, gross, excluding loans classified as held-for-sale	17,887	17,479
Commercial and Financial | Domestic | Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	523	615
Fiscal year before current fiscal year	473	285
Two years before current fiscal year	204	747
Three years before current fiscal year	637	149
Four years before current fiscal year	104	291
Prior	371	141
Revolving Loans	54	81
Loans, gross, excluding loans classified as held-for-sale	2,366	2,309
Commercial and Financial | Domestic | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
Fiscal year before current fiscal year	26	4
Two years before current fiscal year	0	164
Three years before current fiscal year	96	0
Four years before current fiscal year	29	16
Prior	16	0
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	167	184
Commercial and Financial | Domestic | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	5
Fiscal year before current fiscal year	0	0
Two years before current fiscal year	0	18
Three years before current fiscal year	15	0
Four years before current fiscal year	0	0
Prior	0	0
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	15	23
Commercial and Financial | Domestic | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	8
Fiscal year before current fiscal year	5
Two years before current fiscal year	0
Three years before current fiscal year	0
Four years before current fiscal year	0
Prior	0
Revolving Loans	0
Loans, gross, excluding loans classified as held-for-sale	13
Commercial and Financial | Non-U.S.
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	2,604	3,337
Fiscal year before current fiscal year	2,123	2,091
Two years before current fiscal year	1,980	3,028
Three years before current fiscal year	3,079	117
Four years before current fiscal year	113	109
Prior	102	32
Revolving Loans	5,107	4,853
Loans, gross, excluding loans classified as held-for-sale	15,108	13,567
Commercial and Financial | Non-U.S. | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	2,328	2,943
Fiscal year before current fiscal year	1,853	1,956
Two years before current fiscal year	1,853	2,518
Three years before current fiscal year	2,633	0
Four years before current fiscal year	0	0
Prior	0	0
Revolving Loans	5,079	4,841
Loans, gross, excluding loans classified as held-for-sale	13,746	12,258
Commercial and Financial | Non-U.S. | Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	276	394
Fiscal year before current fiscal year	270	135
Two years before current fiscal year	127	481
Three years before current fiscal year	378	88
Four years before current fiscal year	113	109
Prior	88	18
Revolving Loans	28	12
Loans, gross, excluding loans classified as held-for-sale	1,280	1,237
Commercial and Financial | Non-U.S. | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
Fiscal year before current fiscal year	0	0
Two years before current fiscal year	0	29
Three years before current fiscal year	68	29
Four years before current fiscal year	0	0
Prior	0	0
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	68	58
Commercial and Financial | Non-U.S. | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
Fiscal year before current fiscal year	0	0
Two years before current fiscal year	0	0
Three years before current fiscal year	0	0
Four years before current fiscal year	0	0
Prior	14	14
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	14	14
Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	3,062	3,069
Commercial real estate | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	2,293	2,287
Commercial real estate | Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	382	449
Commercial real estate | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	163	62
Commercial real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	132	224
Commercial real estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	92	47
Commercial real estate | Domestic
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	39	216
Fiscal year before current fiscal year	216	520
Two years before current fiscal year	520	529
Three years before current fiscal year	531	150
Four years before current fiscal year	149	541
Prior	1,607	1,113
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	3,062	3,069
Commercial real estate | Domestic | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	39	216
Fiscal year before current fiscal year	216	500
Two years before current fiscal year	500	498
Three years before current fiscal year	465	100
Four years before current fiscal year	100	375
Prior	973	598
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	2,293	2,287
Commercial real estate | Domestic | Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
Fiscal year before current fiscal year	0	20
Two years before current fiscal year	20	31
Three years before current fiscal year	66	50
Four years before current fiscal year	49	49
Prior	247	299
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	382	449
Commercial real estate | Domestic | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
Fiscal year before current fiscal year	0	0
Two years before current fiscal year	0	0
Three years before current fiscal year	0	0
Four years before current fiscal year	0	22
Prior	163	40
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	163	62
Commercial real estate | Domestic | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
Fiscal year before current fiscal year	0	0
Two years before current fiscal year	0	0
Three years before current fiscal year	0	0
Four years before current fiscal year	0	95
Prior	132	129
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	132	224
Commercial real estate | Domestic | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
Fiscal year before current fiscal year	0	0
Two years before current fiscal year	0	0
Three years before current fiscal year	0	0
Four years before current fiscal year	0	0
Prior	92	47
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	$ 92	$ 47

Loans and Allowance for Credi_7

Loans and Allowance for Credit Losses - Activity in the Allowance for Credit Losses for Loans Held for Investment (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 135,000,000
Charge-offs	(29,000,000)
Provision for credit losses	27,000,000	$ 44,000,000
Ending balance	135,000,000
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	0	2,000,000
Charge-offs	0	0
Provision	0	0
Ending balance	0	2,000,000
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Roll Forward]
Beginning balance	1,000,000
Charge-offs	0
Provision	0
Ending balance	1,000,000
Leveraged Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	72,000,000	73,000,000
Charge-offs	(6,000,000)	(3,000,000)
Provision for credit losses	5,000,000	12,000,000
Ending balance	71,000,000	82,000,000
Other Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	4,000,000	5,000,000
Charge-offs	0	0
Provision for credit losses	1,000,000	(1,000,000)
Ending balance	5,000,000	4,000,000
Other Loans | Fund Finance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Ending balance	4,000,000	3,000,000
Other Loans | Other Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Ending balance	1,000,000	1,000,000
Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	60,000,000	19,000,000
Charge-offs	(25,000,000)	0
Provision for credit losses	25,000,000	10,000,000
Ending balance	60,000,000	29,000,000
Off-Balance Sheet Commitments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	14,000,000	23,000,000
Charge-offs	0	0
Provision for credit losses	(4,000,000)	(7,000,000)
Ending balance	10,000,000	16,000,000
All Other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	(1,000,000)	(1,000,000)
Charge-offs	0	0
Provision for credit losses	0	30,000,000
Ending balance	(1,000,000)	29,000,000
Total
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	150,000,000	121,000,000
Charge-offs	(31,000,000)	(3,000,000)
Provision for credit losses	27,000,000	44,000,000
Ending balance	$ 146,000,000	$ 162,000,000

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Changes in the Carrying Amount of Goodwill (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Goodwill [Roll Forward]
Beginning balance	$ 7,611	$ 7,495
Acquisitions	14	44
Foreign currency translation	(43)	72
Ending balance	7,582	7,611
Investment Servicing
Goodwill [Roll Forward]
Beginning balance	7,346	7,232
Acquisitions	14	44
Foreign currency translation	(42)	70
Ending balance	7,318	7,346
Investment Management
Goodwill [Roll Forward]
Beginning balance	265	263
Acquisitions	0	0
Foreign currency translation	(1)	2
Ending balance	$ 264	$ 265

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Changes in the Carrying Amount of Other Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	$ 1,320	$ 1,544	$ 1,544
Amortization	(60)	(60)	(239)
Acquisitions	7
Foreign currency translation	(9)		15
Ending balance	1,258		1,320
Investment Servicing
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	1,293	1,495	1,495
Amortization	(55)		(217)
Acquisitions	7
Foreign currency translation	(9)		15
Ending balance	1,236		1,293
Investment Management
Finite-lived Intangible Assets [Roll Forward]
Beginning balance	27	$ 49	49
Amortization	(5)		(22)
Acquisitions	0
Foreign currency translation	0		0
Ending balance	$ 22		$ 27

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Gross Carrying Amount, Accumulated Amortization and Net Carrying Amount of Other Intangible Assets (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 3,915	$ 3,938
Accumulated amortization	(2,657)	(2,618)
Net carrying amount	1,258	1,320	$ 1,544
Client relationships
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	2,742	2,761
Accumulated amortization	(1,833)	(1,808)
Net carrying amount	909	953
Technology
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	404	402
Accumulated amortization	(225)	(216)
Net carrying amount	179	186
Core deposits
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	685	690
Accumulated amortization	(521)	(516)
Net carrying amount	164	174
Other
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	84	85
Accumulated amortization	(78)	(78)
Net carrying amount	$ 6	$ 7

Other Assets (Details)

Other Assets (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Other Assets [Abstract]
Securities borrowed	$ 25,288,000,000	$ 23,131,000,000
Derivative instruments, net	4,937,000,000	5,307,000,000
Bank-owned life insurance	3,770,000,000	3,742,000,000
Investments in joint ventures and other unconsolidated entities	2,989,000,000	2,981,000,000
Collateral, net	2,518,000,000	2,983,000,000
Deferred tax assets, net of valuation allowance	987,000,000	1,034,000,000
Right-of-use assets	831,000,000	805,000,000
Prepaid expenses	825,000,000	598,000,000
Accounts receivable	752,000,000	611,000,000
Receivable for securities settlement	297,000,000	1,082,000,000
Income taxes receivable	238,000,000	246,000,000
Deposits with clearing organizations	59,000,000	58,000,000
Other	1,977,000,000	2,228,000,000
Other Assets, Total	45,468,000,000	44,806,000,000
Equity securities without readily determinable fair value, amount	192,000,000	183,000,000
Equity securities without readily determinable fair value, impairment loss	0
Advances	$ 886,000,000	$ 1,150,000,000

Derivative Financial Instrume_3

Derivative Financial Instruments - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Derivative [Line Items]
Cash flow hedge gains to be reclassified within twelve months	$ 183
Maximum length of time hedged in cash flow hedge	5 years
Fair value of derivative liabilities	$ 12,969	$ 19,602
Interest rate swap | Fair Value Hedges
Derivative [Line Items]
Notional amount of derivative instruments	20,810	$ 19,430
Credit swap agreements
Derivative [Line Items]
Fair value of derivative liabilities	3,040
Cash collateral provided for derivative instruments	2,140
Maximum additional amount of payments related to termination events	$ 900

Derivative Financial Instrume_4

Derivative Financial Instruments - Schedule of Outstanding Hedges: (Notional Amount) (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Derivatives not designated as hedging instruments | Interest rate contracts | Futures
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	$ 29,758	$ 12,668
Derivatives not designated as hedging instruments | Foreign exchange contracts | Futures
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	127	197
Derivatives not designated as hedging instruments | Foreign exchange contracts | Forward, swap and spot
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	2,756,921	2,528,115
Derivatives not designated as hedging instruments | Foreign exchange contracts | Options purchased
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	922	851
Derivatives not designated as hedging instruments | Foreign exchange contracts | Options written
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	449	544
Derivatives not designated as hedging instruments | Other derivative contracts | Futures
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	145	125
Derivatives not designated as hedging instruments | Other derivative contracts | Stable value contracts
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	28,454	28,704
Derivatives not designated as hedging instruments | Other derivative contracts | Deferred value awards
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	343	289
Derivatives designated as hedging instruments | Interest rate contracts | Swap agreements
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	22,441	20,333
Derivatives designated as hedging instruments | Foreign exchange contracts | Forward and swap
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	$ 9,487	$ 9,777

Derivative Financial Instrume_5

Derivative Financial Instruments - Schedule of the Fair Values of Derivative Financial Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	$ 13,433	$ 19,707
Fair value of derivative liabilities	12,969	19,602
Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	13,422	19,694
Fair value of derivative liabilities	12,787	19,416
Interest rate contracts
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	11	13
Fair value of derivative liabilities	4	4
Derivatives not designated as hedging instruments | Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	13,354	19,498
Derivatives not designated as hedging instruments | Other Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	12,963	19,335
Derivatives not designated as hedging instruments | Foreign exchange contracts | Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	13,354	19,498
Derivatives not designated as hedging instruments | Foreign exchange contracts | Other Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	12,785	19,153
Derivatives not designated as hedging instruments | Other derivative contracts | Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	0	0
Derivatives not designated as hedging instruments | Other derivative contracts | Other Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	178	182
Derivatives designated as hedging instruments | Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	79	209
Derivatives designated as hedging instruments | Other Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	6	267
Derivatives designated as hedging instruments | Foreign exchange contracts | Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	68	196
Derivatives designated as hedging instruments | Foreign exchange contracts | Other Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	2	263
Derivatives designated as hedging instruments | Interest rate contracts | Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	11	13
Derivatives designated as hedging instruments | Interest rate contracts | Other Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	$ 4	$ 4

Derivative Financial Instrume_6

Derivative Financial Instruments - Impact of Derivatives on Consolidated Statement of Income (Details) - Derivatives not designated as hedging instruments - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	$ 212	$ 183
Foreign exchange contracts | Foreign exchange trading services
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	207	232
Foreign exchange contracts | Interest expense
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	49	5
Interest rate contracts
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	7	1
Other derivative contracts
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income		$ (55)
Other derivative contracts | Other fee revenue
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	(2)
Other derivative contracts | Compensation and employee benefits
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	$ (49)

Derivative Financial Instrume_7

Derivative Financial Instruments - Carrying Amount and Cumulative Basis Adjustments for Hedge Accounting (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Prepayable financial asset closed portfolio, amortized cost	$ 667	$ 685
Prepayable financial asset closed portfolio, last-of-layer, amortized cost	400	400
Cumulative adjustment associated with hedging relationships	(11)	(6)
Hedged Items Currently Designated | Long-term debt
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Carrying Amount of Hedged Assets/Liabilities	12,465	12,463
Cumulative Hedge Accounting Basis Adjustments	(400)	(340)
Hedged Items Currently Designated | Available-for-sale securities
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Carrying Amount of Hedged Assets/Liabilities	12,621	11,260
Cumulative Hedge Accounting Basis Adjustments	(605)	(503)
De-designated | Long-term debt
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cumulative Hedge Accounting Basis Adjustments	142	156
De-designated | Available-for-sale securities
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cumulative Hedge Accounting Basis Adjustments	$ 2	$ 3

Derivative Financial Instrume_8

Derivative Financial Instruments - Impact on Derivatives and Hedged Items on Consolidated Statement of Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of gain (loss) on derivative recognized in consolidated statement of income	$ 42	$ (5)
Amount of gain (loss) on hedged item recognized in consolidated statement of income	(42)	5
Net unrealized gains (losses) on available-for-sale securities designated in fair value hedges, net of related taxes	75	81
Available-for-sale securities | Net interest income | Interest rate contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of gain (loss) on derivative recognized in consolidated statement of income	102	(113)
Amount of gain (loss) on hedged item recognized in consolidated statement of income	(102)	113
Long-term debt | Net interest income | Interest rate contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of gain (loss) on derivative recognized in consolidated statement of income	(60)	108
Amount of gain (loss) on hedged item recognized in consolidated statement of income	$ 60	$ (108)

Derivative Financial Instrume_9

Derivative Financial Instruments - Schedule of Differences Between the Gains (Losses) on the Derivative and the Gains (Losses) on the Hedged Item (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Derivative [Line Items]
Gain (loss) on derivative recognized in OCI, cash flow hedge	$ 45	$ 19
Gain (loss) on derivative recognized in OCI, net investment hedge	185	(41)
Other comprehensive income (loss), derivative, before reclassification and tax	230	(22)
Gain (loss) on hedges reclassified to income, cash flow hedge	199	(51)
Other comprehensive income (loss), derivative, gain (loss), reclassification, before tax	199	(51)
Gain (loss) on hedges reclassified to income, net investment hedge	$ 0	0
Floating-rate loans
Derivative [Line Items]
Term of debt instrument	5 years
Interest rate contracts
Derivative [Line Items]
Gain (loss) on derivative recognized in OCI, cash flow hedge	$ (14)	3
Interest rate contracts | Net interest income
Derivative [Line Items]
Gain (loss) on hedges reclassified to income, cash flow hedge	(55)	(51)
Foreign exchange contracts
Derivative [Line Items]
Gain (loss) on derivative recognized in OCI, cash flow hedge	59	16
Gain (loss) on derivative recognized in OCI, net investment hedge	185	(41)
Foreign exchange contracts | Net interest income
Derivative [Line Items]
Gain (loss) on hedges reclassified to income, cash flow hedge	254	0
Foreign exchange contracts | Gains (losses) related to investment securities, net
Derivative [Line Items]
Gain (loss) on hedges reclassified to income, net investment hedge	$ 0	$ 0

Offsetting Arrangements - Narra

Offsetting Arrangements - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Offsetting [Abstract]
Fair value of securities received as collateral that can be resold or repledged	$ 11,000	$ 10,670
Fair value of securities received as collateral that have been resold or repledged	$ 6,210	$ 6,410

Offsetting Arrangements - Asset

Offsetting Arrangements - Assets With Offsetting Arrangements (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Offsetting Assets [Line Items]
Derivatives, gross amounts of recognized assets	$ 13,433	$ 19,707
Derivatives, gross amounts offset in statement of condition	(8,496)	(14,400)
Derivatives, net amounts of assets presented in statement of condition	4,937	5,307
Derivatives, net amount	4,561	4,238
Derivatives, cash collateral and securities netting, cash offset	(762)	(3,904)
Derivatives, cash collateral and securities netting, cash and securities received	(376)	(1,069)
Derivatives, cash collateral and securities netting, net amount	(1,138)	(4,973)
Resale agreements and securities borrowing, gross amounts of recognized assets	236,786	230,384
Resale agreements and securities borrowing, gross amounts offset in statement of condition	(204,009)	(200,561)
Resale agreements and securities borrowing, net amounts of assets presented in statement of condition	32,777	29,823
Resale agreements and securities borrowing, cash and securities received	(31,146)	(28,016)
Resale agreements and securities borrowing, net amount	1,631	1,807
Total derivatives and other financial instruments, gross amounts of recognized assets	250,219	250,091
Total derivatives and other financial instruments, gross amounts offset in statement of condition	(212,505)	(214,961)
Total derivatives and other financial instruments, net amounts of assets presented in statement of condition	37,714	35,130
Total derivatives and other financial instruments, cash and securities received	(31,522)	(29,085)
Total derivatives and other financial instruments, net amount	6,192	6,045
Securities purchased under resale agreements	7,489	6,692
Cash collateral provided for securities borrowing	25,290	23,130
Foreign exchange contracts
Offsetting Assets [Line Items]
Derivatives, gross amounts of recognized assets	13,422	19,694
Derivatives, gross amounts offset in statement of condition	(7,730)	(10,496)
Derivatives, net amounts of assets presented in statement of condition	5,692	9,198
Derivatives, net amount	5,692	9,198
Interest rate contracts
Offsetting Assets [Line Items]
Derivatives, gross amounts of recognized assets	11	13
Derivatives, gross amounts offset in statement of condition	(4)	0
Derivatives, net amounts of assets presented in statement of condition	7	13
Derivatives, net amount	$ 7	$ 13

Offsetting Arrangements - Liabi

Offsetting Arrangements - Liabilities With Offsetting Arrangements (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Offsetting Liabilities [Line Items]
Derivatives, gross amounts of recognized liabilities	$ 12,969	$ 19,602
Derivatives, gross amounts offset in statement of condition	(9,711)	(11,909)
Net Amounts of Liabilities Presented in Statement of Condition	3,258	7,693
Derivative, net amount	2,708	7,060
Derivative liability, collateral, cash offset	(1,977)	(1,413)
Derivatives, cash and collateral securities netting, cash and securities provided	(550)	(633)
Derivatives, cash and collateral securities netting, net	(2,527)	(2,046)
Resale agreements and securities lending, gross amounts of recognized liabilities	221,325	214,362
Resale agreements and securities lending, gross amounts offset in statement of condition	(204,009)	(200,561)
Resale agreements and securities lending, net amounts of liabilities presented in statement of condition	17,316	13,801
Resale agreements and securities lending, cash and securities provided	(16,752)	(13,306)
Resale agreements and securities lending, net amount	564	495
Total derivatives and other financial instruments, gross amounts of recognized liabilities	234,294	233,964
Total derivatives and other financial instruments, gross amounts offset in statement of condition	(213,720)	(212,470)
Total derivatives and other financial instruments, net amounts of liabilities presented in statement of condition	20,574	21,494
Total derivatives and other financial instruments, cash and securities provided	(17,302)	(13,939)
Total derivatives and other financial instruments, net amount	3,272	7,555
Securities sold under repurchase agreements	3,576	1,867
Foreign exchange contracts
Offsetting Liabilities [Line Items]
Derivatives, gross amounts of recognized liabilities	12,787	19,416
Derivatives, gross amounts offset in statement of condition	(7,730)	(10,496)
Net Amounts of Liabilities Presented in Statement of Condition	5,057	8,920
Derivative, net amount	5,057	8,920
Interest rate contracts
Offsetting Liabilities [Line Items]
Derivatives, gross amounts of recognized liabilities	4	4
Derivatives, gross amounts offset in statement of condition	(4)	0
Net Amounts of Liabilities Presented in Statement of Condition	0	4
Derivative, net amount	0	4
Other derivative contracts
Offsetting Liabilities [Line Items]
Derivatives, gross amounts of recognized liabilities	178	182
Derivatives, gross amounts offset in statement of condition	0	0
Net Amounts of Liabilities Presented in Statement of Condition	178	182
Derivative, net amount	178	182
Accrued expenses and other liabilities
Offsetting Liabilities [Line Items]
Cash collateral received in connection to securities finance activities	$ 13,740	$ 11,930

Offsetting Arrangements - Repo,

Offsetting Arrangements - Repo, Sec Lending Transactions Maturity by Category (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	$ 202,300	$ 197,757
Securities lending transactions	19,025	16,605
Gross amount of recognized liabilities for repurchase agreements and securities lending	221,325	214,362
U.S. Treasury and agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	202,300	197,757
Securities lending transactions	4	6
Corporate debt securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	265	281
Equity securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	11,890	9,452
Other
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	6,866	6,866
Overnight and Continuous
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	199,053	196,212
Securities lending transactions	16,323	14,278
Gross amount of recognized liabilities for repurchase agreements and securities lending	215,376	210,490
Overnight and Continuous | U.S. Treasury and agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	199,053	196,212
Securities lending transactions	4	6
Overnight and Continuous | Corporate debt securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	252	278
Overnight and Continuous | Equity securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	9,201	7,128
Overnight and Continuous | Other
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	6,866	6,866
Up to 30 Days
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	254	0
Securities lending transactions	18	20
Gross amount of recognized liabilities for repurchase agreements and securities lending	272	20
Up to 30 Days | U.S. Treasury and agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	254	0
Securities lending transactions	0	0
Up to 30 Days | Corporate debt securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	0	0
Up to 30 Days | Equity securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	18	20
Up to 30 Days | Other
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	0	0
30-90 days
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	929	185
Securities lending transactions	71	16
Gross amount of recognized liabilities for repurchase agreements and securities lending	1,000	201
30-90 days | U.S. Treasury and agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	929	185
Securities lending transactions	0	0
30-90 days | Corporate debt securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	13	3
30-90 days | Equity securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	58	13
30-90 days | Other
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	0	0
Greater than 90 Days
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	2,064	1,360
Securities lending transactions	2,613	2,291
Gross amount of recognized liabilities for repurchase agreements and securities lending	4,677	3,651
Greater than 90 Days | U.S. Treasury and agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	2,064	1,360
Securities lending transactions	0	0
Greater than 90 Days | Corporate debt securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	0	0
Greater than 90 Days | Equity securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	2,613	2,291
Greater than 90 Days | Other
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	$ 0	$ 0

Commitments and Guarantees - Co

Commitments and Guarantees - Contractual Amounts of Credit-Related Off-Balance Sheet Financial Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Unfunded credit facilities	$ 34,569	$ 34,197
Indemnified securities financing	326,375	279,916
Standby letters of credit	$ 1,491	$ 1,510

Commitments and Guarantees - Sc

Commitments and Guarantees - Schedule of Repurchase Agreements (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Fair value of indemnified securities financing	$ 326,375	$ 279,916
Fair value of cash and securities held by us, as agent, as collateral for indemnified securities financing	341,903	293,855
Fair value of collateral for indemnified securities financing invested in indemnified repurchase agreements	69,197	59,028
Fair value of cash and securities held by us or our agents as collateral for investments in indemnified repurchase agreements	$ 73,975	$ 63,105

Commitments and Guarantees - Na

Commitments and Guarantees - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Loss Contingencies [Line Items]
Unfunded commitments to extend credit, short term	77%	75%
Term of unfunded commitment	1 year
Cash collateral provided for securities lending	$ 25,290	$ 23,130
Accrued expenses and other liabilities
Loss Contingencies [Line Items]
Cash collateral received in connection to securities finance activities	$ 13,740	$ 11,930

Contingencies (Details)

Contingencies (Details) $ in Millions	1 Months Ended
	Mar. 31, 2024 USD ($) classAction	Aug. 31, 2021 plaintiff	May 31, 2021 participant	Dec. 31, 2023 USD ($)
Loss Contingencies [Line Items]
Accrual of loss contingency	$ 20
Estimate of possible loss	40
Participants who filed a purported class action complaint | participant			8
Unrecognized tax benefits	$ 237			$ 237
Edmar v Currenex
Loss Contingencies [Line Items]
Loss contingency, number of plaintiffs | plaintiff		2
Piercy v AT&T And Schloss v AT&T
Loss Contingencies [Line Items]
Number of class actions filed | classAction	2

Variable Interest Entities - Na

Variable Interest Entities - Narrative (Details) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Variable Interest Entity [Line Items]
Assets	$ 338,003,000,000	$ 297,258,000,000
Total liabilities	313,570,000,000	273,459,000,000
Contingent Commitment for Tax Credit Investments
Variable Interest Entity [Line Items]
Other commitment	149,000,000
Low Income Housing Tax Credit
Variable Interest Entity [Line Items]
Investment owned	788,000,000
Production Tax Credit
Variable Interest Entity [Line Items]
Investment owned	365,000,000
VIE - primary beneficiary
Variable Interest Entity [Line Items]
Assets	0	0
Total liabilities	0	0
VIE - not primary beneficiary | Unconsolidated Funds
Variable Interest Entity [Line Items]
Potential maximum loss exposure of unconsolidated funds	18,000,000	18,000,000
VIE - not primary beneficiary | Low Income Housing, Production and Investment Tax Credit Entities
Variable Interest Entity [Line Items]
Potential maximum loss exposure of unconsolidated funds	1,280,000,000	$ 1,330,000,000
Deferred contribution payments included in accrued expenses and other liabilities	$ 48,000,000

Variable Interest Entities - Ta

Variable Interest Entities - Tax Credits (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Variable Interest Entity [Line Items]
Total revenue	$ 3,138	$ 3,101
Income tax expense	135	$ 139
VIE - not primary beneficiary
Variable Interest Entity [Line Items]
Total revenue	4
Tax credits and benefits recognized in income tax expense	56
Proportional amortization recognized in income tax expense	(44)
Income tax expense	12
Net benefit attributable to tax-advantaged investments included in the consolidated statement of income	$ 16

Shareholders' Equity - Schedule

Shareholders' Equity - Schedule of Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended
	Jan. 31, 2024	Jan. 31, 2024	Sep. 30, 2018	Apr. 30, 2016	Mar. 31, 2024	Dec. 31, 2023
Series G Preferred Stock, Depository Share
Class of Stock [Line Items]
Preferred stock issued (shares)				20,000,000
Amount outstanding (in shares)				500,000,000
Liquidation preference per share (USD per share)				$ 25
Series G Preferred Stock
Class of Stock [Line Items]
Ownership Interest Per Depositary Share				0.025%
Liquidation preference per share (USD per share)				$ 100,000
Per annum dividend rate				5.35%
Preferred stock					$ 493	$ 493
Series H Preferred Stock, Depository Share
Class of Stock [Line Items]
Preferred stock issued (shares)			500,000
Amount outstanding (in shares)			500,000,000
Liquidation preference per share (USD per share)			$ 1,000
Series H Preferred Stock
Class of Stock [Line Items]
Ownership Interest Per Depositary Share			1%
Liquidation preference per share (USD per share)			$ 100,000
Preferred stock					494	494
Series H Preferred Stock | SOFR | Maximum
Class of Stock [Line Items]
Preferred stock, dividend payment rate, basis spread on variable rate, option one			8.185%
Series H Preferred Stock | SOFR | Minimum
Class of Stock [Line Items]
Preferred stock, dividend payment rate, option two			2.801%
Series I Preferred Stock, Depository Share
Class of Stock [Line Items]
Preferred stock issued (shares)		1,500,000
Amount outstanding (in shares)	1,500,000,000	1,500,000,000
Ownership Interest Per Depositary Share		1%
Liquidation preference per share (USD per share)	$ 1,000	$ 1,000
Series I Preferred Stock
Class of Stock [Line Items]
Preferred stock issued (shares)	1,500,000
Ownership Interest Per Depositary Share		1%
Liquidation preference per share (USD per share)	$ 100,000	$ 100,000
Per annum dividend rate		6.70%
Per annum dividend rate, basis spread on variable rate		6.70%
Preferred stock					$ 1,481	$ 0
Series I Preferred Stock | US Treasury (UST) Interest Rate
Class of Stock [Line Items]
Per annum dividend rate, basis spread on variable rate		2.613%

Shareholders' Equity - Preferre

Shareholders' Equity - Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended		3 Months Ended
	Sep. 30, 2018	Apr. 30, 2016	Mar. 31, 2024	Mar. 31, 2023
Class of Stock [Line Items]
Preferred stock cash dividend			$ 34	$ 23
Series D Preferred Stock
Class of Stock [Line Items]
Preferred dividends declared (USD per share)			$ 1,475	$ 1,475
Preferred stock cash dividend			$ 11	$ 11
Series D Preferred Stock, Depository Share
Class of Stock [Line Items]
Preferred dividends declared (USD per share)			$ 0.37	$ 0.37
Series F Preferred Stock
Class of Stock [Line Items]
Preferred dividends declared (USD per share)			$ 2,336	$ 2,092
Preferred stock cash dividend			$ 6	$ 5
Series F Preferred Stock, Depository Share
Class of Stock [Line Items]
Preferred dividends declared (USD per share)			$ 23.36	$ 20.92
Series G Preferred Stock
Class of Stock [Line Items]
Preferred dividends declared (USD per share)			$ 1,338	$ 1,338
Preferred stock cash dividend			$ 7	$ 7
Ownership Interest Per Depositary Share		0.025%
Series G Preferred Stock, Depository Share
Class of Stock [Line Items]
Preferred dividends declared (USD per share)			$ 0.33	$ 0.33
Series H Preferred Stock
Class of Stock [Line Items]
Preferred dividends declared (USD per share)			$ 2,069	$ 0
Preferred stock cash dividend			$ 10	$ 0
Ownership Interest Per Depositary Share	1%
Series H Preferred Stock, Depository Share
Class of Stock [Line Items]
Preferred dividends declared (USD per share)			$ 20.69	$ 0

Shareholders' Equity - Narrativ

Shareholders' Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended	3 Months Ended
	Jan. 31, 2024	Jan. 31, 2024	Mar. 31, 2024	Mar. 31, 2023	Mar. 15, 2024	Jan. 19, 2024	Dec. 31, 2023
Class of Stock [Line Items]
Proceeds from issuance of preferred stock, net of issuance costs			$ 1,481	$ 0
Series I Preferred Stock, Depository Share
Class of Stock [Line Items]
Ownership Interest Per Depositary Share		1%
Preferred stock issued (shares)		1,500,000
Liquidation preference per share (USD per share)	$ 1,000	$ 1,000
Series I Preferred Stock
Class of Stock [Line Items]
Ownership Interest Per Depositary Share		1%
Preferred stock issued (shares)	1,500,000
Liquidation preference per share (USD per share)	$ 100,000	$ 100,000
Proceeds from issuance of preferred stock, net of issuance costs	$ 1,500
Per annum dividend rate		6.70%
Preferred stock, shares outstanding (in shares)			15,000				15,000
Series F Preferred Stock
Class of Stock [Line Items]
Liquidation preference per share (USD per share)					$ 100,000
Redemption price					$ 1,000
Preferred stock, shares outstanding (in shares)			2,500		2,500		2,500
Series D Preferred Stock
Class of Stock [Line Items]
Liquidation preference per share (USD per share)					$ 100,000
Preferred stock, shares outstanding (in shares)			7,500		7,500		7,500
Series D Preferred Stock, Depository Share
Class of Stock [Line Items]
Liquidation preference per share (USD per share)					$ 25
Preferred stock, shares outstanding (in shares)					30,000,000
Series F Preferred Stock, Depository Share
Class of Stock [Line Items]
Liquidation preference per share (USD per share)					$ 1,000
Preferred stock, shares outstanding (in shares)					250,000
2023 Share Repurchase Program
Class of Stock [Line Items]
Total Acquired (In millions)			$ 0	1,250
2024 Share Repurchase Program
Class of Stock [Line Items]
Total Acquired (In millions)			$ 100	$ 0
Amount of common stock authorized for repurchase						$ 5,000

Shareholders' Equity - Schedu_2

Shareholders' Equity - Schedule of Common Stock (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
2024 Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Common stock acquired (shares)	1,400	0
Average cost per share (USD per share)	$ 73.24	$ 0
Total Acquired (In millions)	$ 100	$ 0
2023 Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Common stock acquired (shares)	0	13,600
Average cost per share (USD per share)	$ 0	$ 91.57
Total Acquired (In millions)	$ 0	$ 1,250

Shareholders' Equity - Schedu_3

Shareholders' Equity - Schedule of Dividends Declared (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Equity [Abstract]
Cash dividends declared (in USD per share)	$ 0.69	$ 0.63
Total (In millions)	$ 208	$ 212

Shareholders' Equity - Accumula

Shareholders' Equity - Accumulated Other Comprehensive Income by Component (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Jun. 30, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 23,799	$ 25,191	$ 25,191
Other comprehensive income (loss) before reclassifications	(97)	338
Increase (decrease) due to amounts reclassified from accumulated other comprehensive income	82	101
Other comprehensive income (loss)	(15)	439
Ending balance	24,433	24,750
AFS transferred to HTM	(492)		(530)
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(2,354)	(3,711)	(3,711)
Other comprehensive income (loss)	(15)	439
Ending balance	(2,369)	(3,272)
Net Unrealized Gains (Losses) on Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(131)	(359)	(359)
Other comprehensive income (loss) before reclassifications	34	14
Increase (decrease) due to amounts reclassified from accumulated other comprehensive income	(147)	37
Other comprehensive income (loss)	(113)	51
Ending balance	(244)	(308)
Net Unrealized Gains (Losses) on Investment Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(947)	(1,817)	(1,817)
Other comprehensive income (loss) before reclassifications	(30)	194
Increase (decrease) due to amounts reclassified from accumulated other comprehensive income	228	52
Other comprehensive income (loss)	198	246
Ending balance	(749)	(1,571)
Net Unrealized Losses on Retirement Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(145)	(143)	(143)
Other comprehensive income (loss) before reclassifications	6	0
Increase (decrease) due to amounts reclassified from accumulated other comprehensive income	1	12
Other comprehensive income (loss)	7	12
Ending balance	(138)	(131)
Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1,400)	(1,751)	(1,751)
Other comprehensive income (loss) before reclassifications	(292)	172
Increase (decrease) due to amounts reclassified from accumulated other comprehensive income	0	0
Other comprehensive income (loss)	(292)	172
Ending balance	(1,692)	(1,579)
Net Unrealized Gains (Losses) on Hedges of Net Investments in Non-U.S. Subsidiaries
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	269	359	$ 359
Other comprehensive income (loss) before reclassifications	185	(42)
Increase (decrease) due to amounts reclassified from accumulated other comprehensive income	0	0
Other comprehensive income (loss)	185	(42)
Ending balance	$ 454	$ 317

Shareholders' Equity - Adjustme

Shareholders' Equity - Adjustments to Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Class of Stock [Line Items]
Net interest income	$ (716)	$ (766)
Compensation and employee benefits expenses	1,252	1,292
Total amounts reclassified from accumulated other comprehensive income	(463)	(549)
Other comprehensive income (loss), reclassified losses into net income, tax	83	19
Other comprehensive income (loss), cash flow hedge, gain (loss), reclassification, tax	(52)	14
Other comprehensive (income) loss, actuarial losses, tax	0	5
Amounts Reclassified into Earnings
Class of Stock [Line Items]
Total amounts reclassified from accumulated other comprehensive income	82	101
Amounts Reclassified into Earnings | Net Unrealized Gains (Losses) on Investment Securities
Class of Stock [Line Items]
Net interest income	(228)	(52)
Amounts Reclassified into Earnings | Net Unrealized Gains (Losses) on Cash Flow Hedges
Class of Stock [Line Items]
Net interest income	(147)	37
Amounts Reclassified into Earnings | Amortization of Actuarial Losses
Class of Stock [Line Items]
Compensation and employee benefits expenses	$ 1	$ 12

Regulatory Capital (Details)

Regulatory Capital (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Retained earnings	$ 28,166	$ 27,957
Capital ratio: required common equity tier 1 capital	8%	8%
Capital ratio: required tier 1 capital	0.095	0.095
Capital ratio: required total capital	0.115	0.115
Tier 1 leverage capital ratio, minimum	0.040	0.040
Capital conservation buffer	0.025
Stress capital buffer	2.50%
Global systemically important bank	0.010
Countercyclical capital buffer	0
Leverage ratio minimum	0.05
Basel III Advanced Approaches
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common stock and related surplus	$ 11,228	$ 11,245
Retained earnings	28,166	27,957
Accumulated other comprehensive income (loss)	(2,369)	(2,354)
Treasury stock, at cost	(15,060)	(15,025)
Total	21,965	21,823
Goodwill and other intangible assets, net of associated deferred tax liabilities	(8,380)	(8,470)
Other adjustments	(418)	(382)
Common equity tier 1 capital	13,167	12,971
Preferred stock	2,468	1,976
Tier 1 capital	15,635	14,947
Qualifying subordinated long-term debt	1,869	1,870
Allowance for credit losses	0	0
Total capital	17,504	16,817
Credit risk	61,787	61,210
Operational risk	48,149	43,768
Market risk	2,225	2,475
Total risk-weighted assets	112,161	107,453
Adjusted quarterly average assets	$ 289,772	$ 269,807
Common equity tier 1 capital	11.70%	12.10%
Tier 1 capital	0.139	0.139
Total capital	0.156	0.157
Tier 1 leverage capital ratio, actual	0.054	0.055
Basel III Standardized Approach
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common stock and related surplus	$ 11,228	$ 11,245
Retained earnings	28,166	27,957
Accumulated other comprehensive income (loss)	(2,369)	(2,354)
Treasury stock, at cost	(15,060)	(15,025)
Total	21,965	21,823
Goodwill and other intangible assets, net of associated deferred tax liabilities	(8,380)	(8,470)
Other adjustments	(418)	(382)
Common equity tier 1 capital	13,167	12,971
Preferred stock	2,468	1,976
Tier 1 capital	15,635	14,947
Qualifying subordinated long-term debt	1,869	1,870
Allowance for credit losses	146	150
Total capital	17,650	16,967
Credit risk	116,388	109,228
Market risk	2,225	2,475
Total risk-weighted assets	118,613	111,703
Adjusted quarterly average assets	$ 289,772	$ 269,807
Common equity tier 1 capital	11.10%	11.60%
Tier 1 capital	0.132	0.134
Total capital	0.149	0.152
Tier 1 leverage capital ratio, actual	0.054	0.055
State Street Bank | Basel III Advanced Approaches
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common stock and related surplus	$ 13,333	$ 13,033
Retained earnings	14,888	14,454
Accumulated other comprehensive income (loss)	(2,094)	(2,097)
Treasury stock, at cost	0	0
Total	26,127	25,390
Goodwill and other intangible assets, net of associated deferred tax liabilities	(8,107)	(8,208)
Other adjustments	(321)	(298)
Common equity tier 1 capital	17,699	16,884
Preferred stock	0	0
Tier 1 capital	17,699	16,884
Qualifying subordinated long-term debt	535	536
Allowance for credit losses	0	0
Total capital	18,234	17,420
Credit risk	54,966	54,942
Operational risk	47,044	42,297
Market risk	2,225	2,475
Total risk-weighted assets	104,235	99,714
Adjusted quarterly average assets	$ 286,577	$ 266,818
Common equity tier 1 capital	17%	16.90%
Tier 1 capital	0.170	0.169
Total capital	0.175	0.175
Tier 1 leverage capital ratio, actual	0.062	0.063
State Street Bank | Basel III Standardized Approach
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common stock and related surplus	$ 13,333	$ 13,033
Retained earnings	14,888	14,454
Accumulated other comprehensive income (loss)	(2,094)	(2,097)
Treasury stock, at cost	0	0
Total	26,127	25,390
Goodwill and other intangible assets, net of associated deferred tax liabilities	(8,107)	(8,208)
Other adjustments	(321)	(298)
Common equity tier 1 capital	17,699	16,884
Preferred stock	0	0
Tier 1 capital	17,699	16,884
Qualifying subordinated long-term debt	535	536
Allowance for credit losses	146	150
Total capital	18,380	17,570
Credit risk	114,292	107,067
Market risk	2,225	2,475
Total risk-weighted assets	116,517	109,542
Adjusted quarterly average assets	$ 286,577	$ 266,818
Common equity tier 1 capital	15.20%	15.40%
Tier 1 capital	0.152	0.154
Total capital	0.158	0.160
Tier 1 leverage capital ratio, actual	0.062	0.063

Net Interest Income (Details)

Net Interest Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Interest income:
Interest-bearing deposits with banks	$ 998	$ 641
Investment securities:
Investment securities available-for-sale	572	347
Investment securities held-to-maturity	294	321
Total investment securities	866	668
Securities purchased under resale agreements	167	76
Loans	546	397
Other interest-earning assets	312	245
Total interest income	2,889	2,027
Interest expense:
Interest-bearing deposits	1,640	953
Securities sold under repurchase agreements	39	9
Short-term borrowings	101	12
Long-term debt	258	184
Other interest-bearing liabilities	135	103
Interest expense	2,173	1,261
Net interest income	$ 716	$ 766

Expenses - Schedule of Expenses

Expenses - Schedule of Expenses (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Other Expenses [Abstract]
Regulatory fees and assessments	$ 141	$ 26
Professional services	110	106
Sales advertising and public relations	25	23
Donations	25	7
Securities processing	8	10
Bank operations	8	11
Other	101	87
Total other expenses	418	$ 270
FDIC special assessment expense	$ 130

Expenses - Restructuring Reserv

Expenses - Restructuring Reserve (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Restructuring Reserve [Roll Forward]
Beginning balance	$ 208	$ 88
Payments and other adjustments	(19)	(15)
Ending balance	189	73
Employee Related Costs
Restructuring Reserve [Roll Forward]
Beginning balance	207	83
Payments and other adjustments	(19)	(14)
Ending balance	188	69
Real Estate Actions
Restructuring Reserve [Roll Forward]
Beginning balance	1	5
Payments and other adjustments	0	(1)
Ending balance	$ 1	$ 4

Earnings Per Common Share (Deta

Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share [Abstract]
Net income	$ 463	$ 549
Preferred stock dividends	(45)	(23)
Dividends and undistributed earnings allocated to participating securities	0	(1)
Net income available to common shareholders, basic	418	525
Net income available to common shareholders, diluted	$ 418	$ 525
Basic average common shares (in shares)	301,991	341,106
Effect of dilutive securities: equity-based awards (in shares)	3,952	4,366
Diluted average common shares (in shares)	305,943	345,472
Anti-dilutive securities (in shares)	1,329	23
Earnings per common share, basic:
Basic (in USD per share)	$ 1.38	$ 1.54
Earnings per common share, diluted:
Diluted (in USD per share)	$ 1.37	$ 1.52

Line of Business Information -

Line of Business Information - Narrative (Details) - 3 months ended Mar. 31, 2024	segment	line_of_business
Segment Reporting [Abstract]
Number of lines of business	2	2

Line of Business Information _2

Line of Business Information - Summary of Line of Business (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Servicing fees	$ 1,228,000,000	$ 1,217,000,000
Management fees	510,000,000	457,000,000
Foreign exchange trading services	331,000,000	342,000,000
Securities finance	96,000,000	109,000,000
Software and processing fees	207,000,000	165,000,000
Other fee revenue	50,000,000	45,000,000
Total fee revenue	2,422,000,000	2,335,000,000
Net interest income	716,000,000	766,000,000
Total revenue	3,138,000,000	3,101,000,000
Provision for credit losses	27,000,000	44,000,000
Total expenses	2,513,000,000	2,369,000,000
Income before income tax expense	$ 598,000,000	$ 688,000,000
Pre-tax margin	19%	22%
Operating Segments | Investment Servicing
Segment Reporting Information [Line Items]
Servicing fees	$ 1,228,000,000	$ 1,217,000,000
Management fees	0	0
Foreign exchange trading services	308,000,000	321,000,000
Securities finance	90,000,000	103,000,000
Software and processing fees	207,000,000	165,000,000
Other fee revenue	43,000,000	28,000,000
Total fee revenue	1,876,000,000	1,834,000,000
Net interest income	711,000,000	762,000,000
Total revenue	2,587,000,000	2,596,000,000
Provision for credit losses	27,000,000	44,000,000
Total expenses	1,963,000,000	1,978,000,000
Income before income tax expense	$ 597,000,000	$ 574,000,000
Pre-tax margin	23%	22%
Operating Segments | Investment Management
Segment Reporting Information [Line Items]
Servicing fees	$ 0	$ 0
Management fees	510,000,000	457,000,000
Foreign exchange trading services	23,000,000	21,000,000
Securities finance	6,000,000	6,000,000
Software and processing fees	0	0
Other fee revenue	7,000,000	17,000,000
Total fee revenue	546,000,000	501,000,000
Net interest income	5,000,000	4,000,000
Total revenue	551,000,000	505,000,000
Provision for credit losses	0	0
Total expenses	420,000,000	386,000,000
Income before income tax expense	$ 131,000,000	$ 119,000,000
Pre-tax margin	24%	24%
Other
Segment Reporting Information [Line Items]
Servicing fees	$ 0	$ 0
Management fees	0	0
Foreign exchange trading services	0	0
Securities finance	0	0
Software and processing fees	0	0
Other fee revenue	0	0
Total fee revenue	0	0
Net interest income	0	0
Total revenue	0	0
Provision for credit losses	0	0
Total expenses	130,000,000	5,000,000
Income before income tax expense	$ (130,000,000)	$ (5,000,000)

Revenue from Contracts with C_3

Revenue from Contracts with Customers - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($) segment	Mar. 31, 2024 USD ($) line_of_business	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of lines of business	2	2
Deferred revenue	$ 135	$ 135	$ 135	$ 133
Amount of deferred revenue recognized			$ 63
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-04-01
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenue, remaining performance obligation, percentage	50%	50%	50%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-04-01 | Software License Sales & SaaS
Accounts, Notes, Loans and Financing Receivable [Line Items]
Remaining performance obligation	$ 1,530	$ 1,530	$ 1,530
Revenue, remaining performance obligation, expected timing of satisfaction, period (in years)	3 years	3 years	3 years
Accrued Interest and Fees Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables related to contracts with customers	$ 2,900	$ 2,900	$ 2,900	$ 2,720

Revenue from Contracts with C_4

Revenue from Contracts with Customers - Disaggregation of Revenues (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Servicing fees	$ 1,228	$ 1,217
Management fees	510	457
Foreign exchange trading services	331	342
Securities finance	96	109
Software and processing fees	207	165
Other fee revenue	50	45
Total fee revenue	2,422	2,335
Net interest income	716	766
Total revenue	3,138	3,101
Operating Segments | Investment Servicing
Disaggregation of Revenue [Line Items]
Topic 606 revenue	1,525	1,490
All other revenue	1,062	1,106
Servicing fees	1,228	1,217
Management fees	0	0
Foreign exchange trading services	308	321
Securities finance	90	103
Software and processing fees	207	165
Other fee revenue	43	28
Total fee revenue	1,876	1,834
Net interest income	711	762
Total revenue	2,587	2,596
Operating Segments | Investment Servicing | Servicing fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	1,228	1,217
All other revenue	0	0
Servicing fees	1,228	1,217
Operating Segments | Investment Servicing | Management fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	0	0
Management fees	0	0
Operating Segments | Investment Servicing | Foreign exchange trading services
Disaggregation of Revenue [Line Items]
Topic 606 revenue	95	90
All other revenue	213	231
Foreign exchange trading services	308	321
Operating Segments | Investment Servicing | Securities finance
Disaggregation of Revenue [Line Items]
Topic 606 revenue	47	63
All other revenue	43	40
Securities finance	90	103
Operating Segments | Investment Servicing | Software and processing fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	155	120
All other revenue	52	45
Software and processing fees	207	165
Operating Segments | Investment Servicing | Other fee revenue
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	43	28
Other fee revenue	43	28
Operating Segments | Investment Servicing | Total fee revenue
Disaggregation of Revenue [Line Items]
Topic 606 revenue	1,525	1,490
All other revenue	351	344
Total fee revenue	1,876	1,834
Operating Segments | Investment Servicing | Net interest income
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	711	762
Net interest income	711	762
Operating Segments | Investment Management
Disaggregation of Revenue [Line Items]
Topic 606 revenue	533	478
All other revenue	18	27
Servicing fees	0	0
Management fees	510	457
Foreign exchange trading services	23	21
Securities finance	6	6
Software and processing fees	0	0
Other fee revenue	7	17
Total fee revenue	546	501
Net interest income	5	4
Total revenue	551	505
Operating Segments | Investment Management | Servicing fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	0	0
Servicing fees	0	0
Operating Segments | Investment Management | Management fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	510	457
All other revenue	0	0
Management fees	510	457
Operating Segments | Investment Management | Foreign exchange trading services
Disaggregation of Revenue [Line Items]
Topic 606 revenue	23	21
All other revenue	0	0
Foreign exchange trading services	23	21
Operating Segments | Investment Management | Securities finance
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	6	6
Securities finance	6	6
Operating Segments | Investment Management | Software and processing fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	0	0
Software and processing fees	0	0
Operating Segments | Investment Management | Other fee revenue
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	7	17
Other fee revenue	7	17
Operating Segments | Investment Management | Total fee revenue
Disaggregation of Revenue [Line Items]
Topic 606 revenue	533	478
All other revenue	13	23
Total fee revenue	546	501
Operating Segments | Investment Management | Net interest income
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	5	4
Net interest income	5	4
Other
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	0	0
Servicing fees	0	0
Management fees	0	0
Foreign exchange trading services	0	0
Securities finance	0	0
Software and processing fees	0	0
Other fee revenue	0	0
Total fee revenue	0	0
Net interest income	0	0
Total revenue	0	0
Other | Servicing fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	0	0
Servicing fees	0	0
Other | Management fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	0	0
Management fees	0	0
Other | Foreign exchange trading services
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	0	0
Foreign exchange trading services	0	0
Other | Securities finance
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	0	0
Securities finance	0	0
Other | Software and processing fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	0	0
Software and processing fees	0	0
Other | Other fee revenue
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	0	0
Other fee revenue	0	0
Other | Total fee revenue
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	0	0
Total fee revenue	0	0
Other | Net interest income
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0
All other revenue	0	0
Net interest income	$ 0	$ 0

Non-U.S. Activities - Schedule

Non-U.S. Activities - Schedule of Results from Non-U.S. Operations (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Total revenue	$ 3,138	$ 3,101
Income before income tax expense	598	688
Non-U.S.
Segment Reporting Information [Line Items]
Total revenue	1,344	1,283
Income before income tax expense	279	252
U.S.
Segment Reporting Information [Line Items]
Total revenue	1,794	1,818
Income before income tax expense	$ 319	$ 436

Non-U.S. Activities - Narrative

Non-U.S. Activities - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)
Segment Reporting Information [Line Items]
Total assets	$ 338,003		$ 297,258
Non-U.S.
Segment Reporting Information [Line Items]
Management fees, percent	0.25	0.25
Service fees, percent	0.47	0.46
Total assets	$ 86,400	$ 81,760

Uncategorized Items - stt-20240

Label	Element	Value
Treasury Stock, Value, Acquired, Par Value Method	us-gaap_TreasuryStockValueAcquiredParValueMethod	$ 1,262,000,000
Treasury Stock, Common [Member]
Treasury Stock, Value, Acquired, Par Value Method	us-gaap_TreasuryStockValueAcquiredParValueMethod	$ 1,262,000,000
Treasury Stock, Shares, Acquired	us-gaap_TreasuryStockSharesAcquired	13,647,000