State Street (STT) 10-Q 27 Oct 23 2023 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2023	Oct. 25, 2023
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2023
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		308,583,511
Entity Central Index Key	0000093751
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
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 D Preferred Stock, Depository Share
Entity Information [Line Items]
Title of 12(b) Security	Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series D, without par value per share
Trading Symbol	STT.PRD
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		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Fee revenue:
Servicing fees	$ 1,234,000,000	$ 1,219,000,000	$ 3,710,000,000	$ 3,884,000,000
Management fees	479,000,000	472,000,000	1,397,000,000	1,482,000,000
Foreign exchange trading services	313,000,000	319,000,000	958,000,000	1,009,000,000
Securities finance	103,000,000	110,000,000	329,000,000	313,000,000
Software and processing fees	188,000,000	184,000,000	574,000,000	573,000,000
Other fee revenue	44,000,000	(5,000,000)	147,000,000	(19,000,000)
Total fee revenue	2,361,000,000	2,299,000,000	7,115,000,000	7,242,000,000
Net interest income:
Interest income	2,328,000,000	1,101,000,000	6,587,000,000	2,326,000,000
Interest expense	1,704,000,000	441,000,000	4,506,000,000	573,000,000
Net interest income	624,000,000	660,000,000	2,081,000,000	1,753,000,000
Other income:
Gains (losses) from sales of available-for-sale securities, net	(294,000,000)	0	(294,000,000)	(2,000,000)
Total other income (loss)	(294,000,000)	0	(294,000,000)	(2,000,000)
Total revenue	2,691,000,000	2,959,000,000	8,902,000,000	8,993,000,000
Provision for credit losses	0	0	26,000,000	10,000,000
Expenses:
Compensation and employee benefits	1,082,000,000	1,042,000,000	3,497,000,000	3,320,000,000
Information systems and communications	411,000,000	399,000,000	1,230,000,000	1,214,000,000
Transaction processing services	241,000,000	227,000,000	715,000,000	731,000,000
Occupancy	101,000,000	97,000,000	298,000,000	288,000,000
Acquisition and restructuring costs	0	13,000,000	0	34,000,000
Amortization of other intangible assets	60,000,000	58,000,000	180,000,000	179,000,000
Other	285,000,000	274,000,000	841,000,000	779,000,000
Total expenses	2,180,000,000	2,110,000,000	6,761,000,000	6,545,000,000
Income before income tax expense	511,000,000	849,000,000	2,115,000,000	2,438,000,000
Income tax expense	89,000,000	159,000,000	381,000,000	397,000,000
Net income	422,000,000	690,000,000	1,734,000,000	2,041,000,000
Net income available to common shareholders, basic	398,000,000	669,000,000	1,649,000,000	1,964,000,000
Net income available to common shareholders, diluted	$ 398,000,000	$ 669,000,000	$ 1,649,000,000	$ 1,964,000,000
Earnings per common share:
Basic (in USD per share)	$ 1.27	$ 1.82	$ 5.03	$ 5.35
Diluted (in USD per share)	$ 1.25	$ 1.80	$ 4.97	$ 5.28
Average common shares outstanding (in thousands):
Basic (in shares)	313,147	367,789	327,776	367,240
Diluted (in shares)	317,329	372,418	332,011	372,194
Cash dividends declared (in USD per share)	$ 0.69	$ 0.63	$ 1.95	$ 1.77

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 422	$ 690	$ 1,734	$ 2,041
Other comprehensive income (loss), net of related taxes:
Foreign currency translation, net of related taxes of $62 and $101, respectively	(127)	(302)	31	(846)
Net unrealized gains (losses) on available-for-sale securities, net of reclassification adjustment and net of related taxes of $106 and ($62), respectively	277	(164)	427	(1,957)
Net unrealized gains (losses) on cash flow hedges, net of related taxes of $23 and ($44), respectively	63	(116)	196	(350)
Net unrealized gains on retirement plans, net of related taxes of $0 and $1, respectively	0	1	12	18
Other comprehensive income (loss)	213	(581)	666	(3,135)
Total comprehensive income (loss)	$ 635	$ 109	$ 2,400	$ (1,094)

Consolidated Statement of Com_2

Consolidated Statement of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Foreign currency translation, taxes	$ 62	$ 101	$ 53	$ 164
Change in net unrealized gains (losses) on available-for-sale securities, taxes	106	(62)	160	(727)
Change in net unrealized gains (losses) on cash flow hedges, taxes	23	(44)	71	(133)
Change in unrealized gains (losses) on retirement plans, taxes	$ 0	$ 1	$ 5	$ 8

Consolidated Statement of Condi

Consolidated Statement of Condition - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Assets:
Cash and due from banks	$ 4,009	$ 3,970
Interest-bearing deposits with banks	76,756	101,593
Securities purchased under resale agreements	1,816	5,215
Trading account assets	725	650
Investment securities available-for-sale (less allowance for credit losses of $0 and $2)	41,546	40,579
Investment securities held-to-maturity (less allowance for credit losses of $1 and $0) (fair value of $54,121 and $57,913)	61,956	64,700
Loans (less allowance for credit losses on loans of $119 and $97)	35,317	32,053
Premises and equipment (net of accumulated depreciation of $6,148 and $5,745)	2,334	2,315
Accrued interest and fees receivable	3,874	3,434
Goodwill	7,487	7,495
Other intangible assets	1,363	1,544
Other assets	47,232	37,902
Total assets	284,415	301,450
Deposits:
Non-interest-bearing	35,824	46,755
Interest-bearing - U.S.	118,561	111,384
Interest-bearing - non-U.S.	58,616	77,325
Total deposits	213,001	235,464
Securities sold under repurchase agreements	3,097	1,177
Short-term borrowings	8	2,097
Accrued expenses and other liabilities	26,124	22,525
Long-term debt	18,564	14,996
Total liabilities	260,794	276,259
Commitments, guarantees and contingencies (Notes 9 and 10)
Shareholders’ equity:
Common stock, $1 par, 750,000,000 shares authorized:	504	504
Surplus	10,735	10,730
Retained earnings	27,993	27,028
Accumulated other comprehensive income (loss)	(3,045)	(3,711)
Treasury stock, at cost (195,296,131 and 154,855,475 shares)	(14,542)	(11,336)
Total shareholders’ equity	23,621	25,191
Total liabilities and shareholders' equity	284,415	301,450
Series D Preferred Stock
Shareholders’ equity:
Preferred stock, no par, 3,500,000 shares authorized:	742	742
Series F Preferred Stock
Shareholders’ equity:
Preferred stock, no par, 3,500,000 shares authorized:	247	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

Consolidated Statement of Con_2

Consolidated Statement of Condition (Parenthetical) - USD ($)	Sep. 30, 2023	Dec. 31, 2022
Assets:
Allowance for credit losses on available-for-sale securities	$ 0	$ 2,000,000
Allowance for credit losses on HTM investment securities	1,000,000	0
Investment securities held-to-maturity	54,121,000,000	57,913,000,000
Allowance for credit losses on loans	119,000,000	97,000,000
Accumulated depreciation	$ 6,148,000,000	$ 5,745,000,000
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)	308,583,511	349,024,167
Treasury stock (in shares)	195,296,131	154,855,475
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

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, 2021	$ 27,363	$ 1,976	$ 504	$ 10,787	$ 25,238	$ (1,133)	$ (10,009)
Beginning balance (shares) at Dec. 31, 2021			503,880,000
Treasury stock, beginning balance (in shares) at Dec. 31, 2021							137,897,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	604				604
Other comprehensive income (loss)	(1,565)					(1,565)
Cash dividends declared:
Common stock dividends	(209)				(209)
Preferred stock cash dividends	(20)				(20)
Common stock awards exercised	66			(11)			$ 77
Common stock awards exercised (in shares)							(1,132,000)
Other	(15)			(14)	(1)
Ending balance at Mar. 31, 2022	$ 26,224	1,976	$ 504	10,762	25,612	(2,698)	$ (9,932)
Ending balance (shares) at Mar. 31, 2022			503,880,000
Treasury stock, ending balance (in shares) at Mar. 31, 2022							136,765,000
Cash dividends declared:
Cash dividends declared (in USD per share)	$ 0.57
Beginning balance at Dec. 31, 2021	$ 27,363	1,976	$ 504	10,787	25,238	(1,133)	$ (10,009)
Beginning balance (shares) at Dec. 31, 2021			503,880,000
Treasury stock, beginning balance (in shares) at Dec. 31, 2021							137,897,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,041
Other comprehensive income (loss)	(3,135)
Cash dividends declared:
Common stock dividends	(651)
Preferred stock cash dividends	(76)
Ending balance at Sep. 30, 2022	$ 25,648	1,976	$ 504	10,760	26,552	(4,268)	$ (9,876)
Ending balance (shares) at Sep. 30, 2022			503,880,000				135,912,000
Cash dividends declared:
Cash dividends declared (in USD per share)	$ 1.77
Beginning balance at Mar. 31, 2022	$ 26,224	1,976	$ 504	10,762	25,612	(2,698)	$ (9,932)
Beginning balance (shares) at Mar. 31, 2022			503,880,000
Treasury stock, beginning balance (in shares) at Mar. 31, 2022							136,765,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	747				747
Other comprehensive income (loss)	(989)					(989)
Preferred stock redeemed	0
Cash dividends declared:
Common stock dividends	(210)				(210)
Preferred stock cash dividends	(35)				(35)
Common stock acquired	0
Common stock awards exercised	29			(5)			$ 34
Common stock awards exercised (in shares)							(505,000)
Other	1				1
Ending balance at Jun. 30, 2022	$ 25,767	1,976	$ 504	10,757	26,115	(3,687)	$ (9,898)
Ending balance (shares) at Jun. 30, 2022			503,880,000
Treasury stock, ending balance (in shares) at Jun. 30, 2022							136,260,000
Cash dividends declared:
Cash dividends declared (in USD per share)	$ 0.57
Net income	$ 690				690
Other comprehensive income (loss)	(581)					(581)
Common stock dividends	(232)				(232)
Preferred stock cash dividends	(21)				(21)
Common stock awards exercised	25			3			$ 22
Common stock awards exercised (in shares)							(348,000)
Ending balance at Sep. 30, 2022	$ 25,648	1,976	$ 504	10,760	26,552	(4,268)	$ (9,876)
Ending balance (shares) at Sep. 30, 2022			503,880,000				135,912,000
Cash dividends declared:
Cash dividends declared (in USD per share)	$ 0.63
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	154,855,475						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 acquired	(1,262)						$ (1,262)
Common stock acquired (shares)							13,647,000
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
Cash dividends declared:
Cash dividends declared (in USD per share)	$ 0.63
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	154,855,475						154,855,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 1,734
Other comprehensive income (loss)	666
Cash dividends declared:
Common stock dividends	(628)
Preferred stock cash dividends	(84)
Ending balance at Sep. 30, 2023	$ 23,621	1,976	$ 504	10,735	27,993	(3,045)	$ (14,542)
Ending balance (shares) at Sep. 30, 2023			503,880,000				195,296,000
Treasury stock, ending balance (in shares) at Sep. 30, 2023	195,296,131
Cash dividends declared:
Cash dividends declared (in USD per share)	$ 1.95
Beginning balance at Mar. 31, 2023	$ 24,750	1,976	$ 504	10,724	27,342	(3,272)	$ (12,524)
Beginning balance (shares) at Mar. 31, 2023			503,880,000
Treasury stock, beginning balance (in shares) at Mar. 31, 2023							167,418,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	763				763
Other comprehensive income (loss)	14					14
Cash dividends declared:
Common stock dividends	(203)				(203)
Preferred stock cash dividends	(37)				(37)
Common stock acquired	(1,060)						$ (1,060)
Common stock acquired (shares)							14,773,000
Common stock awards exercised	34			5			$ 29
Common stock awards exercised (in shares)							(415,000)
Other	(57)				(57)
Other (shares)							2,000
Ending balance at Jun. 30, 2023	$ 24,204	1,976	$ 504	10,729	27,808	(3,258)	$ (13,555)
Ending balance (shares) at Jun. 30, 2023			503,880,000
Treasury stock, ending balance (in shares) at Jun. 30, 2023							181,778,000
Cash dividends declared:
Cash dividends declared (in USD per share)	$ 0.63
Net income	$ 422				422
Other comprehensive income (loss)	213					213
Common stock dividends	(213)				(213)
Preferred stock cash dividends	(24)				(24)
Common stock acquired	(1,010)						$ (1,010)
Common stock acquired (shares)							13,843,000
Common stock awards exercised	29			6			$ 23
Common stock awards exercised (in shares)							(327,000)
Other
Other (shares)							2,000
Ending balance at Sep. 30, 2023	$ 23,621	$ 1,976	$ 504	$ 10,735	$ 27,993	$ (3,045)	$ (14,542)
Ending balance (shares) at Sep. 30, 2023			503,880,000				195,296,000
Treasury stock, ending balance (in shares) at Sep. 30, 2023	195,296,131
Cash dividends declared:
Cash dividends declared (in USD per share)	$ 0.69

Consolidated Statement of Cha_2

Consolidated Statement of Changes in Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Stockholders' Equity [Abstract]
Cash dividends declared (in USD per share)	$ 0.69	$ 0.63	$ 0.63	$ 0.63	$ 0.57	$ 0.57	$ 1.95	$ 1.77

Consolidated Statement of Cash

Consolidated Statement of Cash Flows - USD ($)	3 Months Ended				9 Months Ended		12 Months Ended
	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Operating Activities:
Net income	$ 422,000,000	$ 549,000,000	$ 690,000,000	$ 604,000,000	$ 1,734,000,000	$ 2,041,000,000
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income tax					8,000,000	(6,000,000)
Amortization of other intangible assets	60,000,000		58,000,000		180,000,000	179,000,000	$ 238,000,000
Other non-cash adjustments for depreciation, amortization and accretion, net					511,000,000	558,000,000
Losses related to investment securities, net					294,000,000	2,000,000
Provision for credit losses	0		0		26,000,000	10,000,000
Change in trading account assets, net					(75,000,000)	73,000,000
Change in accrued interest and fees receivable, net					(440,000,000)	(248,000,000)
Change in collateral deposits, net					(2,187,000,000)	4,761,000,000
Change in unrealized (gains) losses on foreign exchange derivatives, net					(2,748,000,000)	(5,155,000,000)
Change in other assets, net					(338,000,000)	1,644,000,000
Change in accrued expenses and other liabilities, net					(504,000,000)	700,000,000
Other, net					47,000,000	359,000,000
Net cash provided by operating activities					(3,492,000,000)	4,918,000,000
Investing Activities:
Net decrease in interest-bearing deposits with banks					24,837,000,000	7,160,000,000
Net decrease in securities purchased under resale agreements					3,399,000,000	1,704,000,000
Proceeds from sales of available-for-sale securities	3,870,000,000				4,567,000,000	4,545,000,000
Proceeds from maturities of available-for-sale securities					11,870,000,000	14,952,000,000
Purchases of available-for-sale securities					(17,243,000,000)	(15,777,000,000)
Proceeds from maturities of held-to-maturity securities					4,414,000,000	8,098,000,000
Purchases of held-to-maturity securities					(1,579,000,000)	(7,755,000,000)
Sale of loans					465,000,000	1,739,000,000
Net (increase) in loans					(3,807,000,000)	(6,134,000,000)
Purchases of equity investments and other long-term assets					0	(193,000,000)
Purchases of premises and equipment, net					(487,000,000)	(530,000,000)
Other, net					130,000,000	102,000,000
Net cash provided by (used in) investing activities					26,566,000,000	7,911,000,000
Financing Activities:
Net increase (decrease) in time deposits					3,273,000,000	(709,000,000)
Net decrease in all other deposits					(25,729,000,000)	(16,086,000,000)
Net increase in securities sold under repurchase agreements					1,920,000,000	2,675,000,000
Net decrease in short-term borrowings					(2,089,000,000)	(20,000,000)
Proceeds from issuance of long-term debt, net of issuance costs					4,729,000,000	2,735,000,000
Payments for long-term debt and obligations under finance leases					(1,037,000,000)	(1,507,000,000)
Repurchases of common stock					(3,300,000,000)	0
Repurchases of common stock for employee tax withholding					(83,000,000)	(96,000,000)
Payments for cash dividends					(719,000,000)	(704,000,000)
Net cash (used in) provided by financing activities					(23,035,000,000)	(13,712,000,000)
Net decrease in cash and due from banks					39,000,000	(883,000,000)
Cash and due from banks at beginning of period		$ 3,970,000,000		$ 3,631,000,000	3,970,000,000	3,631,000,000	3,631,000,000
Cash and due from banks at end of period	$ 4,009,000,000		$ 2,748,000,000		4,009,000,000	2,748,000,000	$ 3,970,000,000
Supplemental disclosure:
Interest paid					4,320,000,000	463,000,000
Income taxes paid, net					$ 258,000,000	$ 364,000,000

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2023
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 2022 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, 2022 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 September 30, 2023 and December 31, 2022, we held such accounts in Russia, inclusive of $1.4 billion and $767 million, 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 $1.9 billion and $1.3 billion, respectively. Cash and due from banks is evaluated as part of our allowance for credit losses. Recent Accounting Developments In March 2023, the Financial Accounting Standards Board (FASB) issued ASU 2023-02, Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method, which expands the use of the proportional amortization method to other types of tax credit investments, regardless of the tax credit program from which the income tax credits are received. We adopted the new standard in the second quarter of 2023, effective January 1, 2023, for renewable energy production tax credit investments under the modified retrospective approach. The proportional amortization method better reflects the economics of the investments by amortizing the cost of the investments in proportion to the tax benefits received, and simplifies the presentation of the amortization by recognizing it through Income tax expense. The impact of adoption resulted in a decrease in accrued expenses and other liabilities, a decrease in other assets and was not material to retained earnings. Additionally, we continue to evaluate other accounting standards that were recently issued, but not yet adopted as of September 30, 2023; none are expected to have a material impact to our financial statements.

Fair Value

Fair Value	9 Months Ended
	Sep. 30, 2023
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 133 to 139 in Note 2 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2022 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 September 30, 2023 (In millions) Quoted Market Pricing Methods Pricing Methods Impact of Netting (1) Total Net Assets: Trading account assets: U.S. government securities $ 35 $ — $ — $ 35 Non-U.S. government securities — 133 — 133 Other — 557 — 557 Total trading account assets 35 690 — 725 Available-for-sale investment securities: U.S. Treasury and federal agencies: Direct obligations 7,627 — — 7,627 Mortgage-backed securities — 9,986 — 9,986 Total U.S. Treasury and federal agencies 7,627 9,986 — 17,613 Non-U.S. debt securities: Mortgage-backed securities — 1,541 — 1,541 Asset-backed securities — 1,890 — 1,890 Non-U.S. sovereign, supranational and non-U.S. agency — 14,666 — 14,666 Other — 2,022 — 2,022 Total non-U.S. debt securities — 20,119 — 20,119 Asset-backed securities: Student loans — 118 — 118 Collateralized loan obligations — 2,640 — 2,640 Non-agency CMBS and RMBS (2) — 264 — 264 Other — 90 — 90 Total asset-backed securities — 3,112 — 3,112 State and political subdivisions — 377 — 377 Other U.S. debt securities — 325 — 325 Total available-for-sale investment securities 7,627 33,919 — 41,546 Other assets: Derivative instruments: Foreign exchange contracts — 20,604 4 $ (12,805) 7,803 Interest rate contracts — 1 — — 1 Total derivative instruments — 20,605 4 (12,805) 7,804 Other 7 687 — — 694 Total assets carried at fair value $ 7,669 $ 55,901 $ 4 $ (12,805) $ 50,769 Liabilities: Accrued expenses and other liabilities: Derivative instruments: Foreign exchange contracts $ 2 $ 20,103 $ 1 $ (15,021) $ 5,085 Interest rate contracts 1 — — — 1 Other derivative contracts — 196 — — 196 Total derivative instruments 3 20,299 1 (15,021) 5,282 Total liabilities carried at fair value $ 3 $ 20,299 $ 1 $ (15,021) $ 5,282 (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 $1.80 billion and $4.02 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, 2022 (In millions) Quoted Market Pricing Methods Pricing Methods Impact of Netting (1) Total Net Assets: Trading account assets: U.S. government securities $ 40 $ — $ — $ 40 Non-U.S. government securities — 142 — 142 Other — 468 — 468 Total trading account assets 40 610 — 650 Available-for-sale investment securities: U.S. Treasury and federal agencies: Direct obligations 7,981 — — 7,981 Mortgage-backed securities — 8,509 — 8,509 Total U.S. Treasury and federal agencies 7,981 8,509 — 16,490 Non-U.S. debt securities: Mortgage-backed securities — 1,623 — 1,623 Asset-backed securities — 1,669 — 1,669 Non-U.S. sovereign, supranational and non-U.S. agency — 14,089 — 14,089 Other — 2,091 — 2,091 Total non-U.S. debt securities — 19,472 — 19,472 Asset-backed securities: Student loans — 115 — 115 Collateralized loan obligations — 2,355 — 2,355 Non-agency CMBS and RMBS (2) — 231 — 231 Other — 88 — 88 Total asset-backed securities — 2,789 — 2,789 State and political subdivisions — 823 — 823 Other U.S. debt securities — 1,005 — 1,005 Total available-for-sale investment securities 7,981 32,598 — 40,579 Other assets: Derivative instruments: Foreign exchange contracts 9 26,173 4 $ (18,522) 7,664 Interest rate contracts — — — — — Total derivative instruments 9 26,173 4 (18,522) 7,664 Other 6 600 — — 606 Total assets carried at fair value $ 8,036 $ 59,981 $ 4 $ (18,522) $ 49,499 Liabilities: Accrued expenses and other liabilities: Trading account liabilities: Derivative instruments: Foreign exchange contracts 2 25,745 2 (17,951) 7,798 Interest rate contracts 1 — — — 1 Other derivative contracts — 216 — — 216 Total derivative instruments 3 25,961 2 (17,951) 8,015 Total liabilities carried at fair value $ 3 $ 25,961 $ 2 $ (17,951) $ 8,015 (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 $3.30 billion and $2.73 billion, respectively, for cash collateral received from and provided to derivative counterparties. (2) Consists entirely of non-agency CMBS. The following tables present activity related to our level 3 financial assets during the three and nine months ended September 30, 2023 and 2022, respectively. Transfers into and out of level 3 are reported as of the beginning of the period presented. During both the three and nine months ended September 30, 2023 and 2022, there were no transfers into and out of level 3. Fair Value Measurements Using Significant Unobservable Inputs Three Months Ended September 30, 2023 Fair Value as of June 30, 2023 Total Realized and Unrealized Gains (Losses) (1) Purchases Sales Settlements Transfers into Level 3 Transfers out of Level 3 Fair Value as of September 30, 2023 (1) Change in Unrealized Gains (Losses) Related to Financial Instruments (In millions) Recorded in Revenue (1) Recorded in Other Comprehensive Income (1) Assets: Other assets: Derivative instruments: Foreign exchange contracts $ 7 $ — $ — $ 3 $ — $ (6) $ — $ — $ 4 $ — Total derivative instruments 7 — — 3 — (6) — — 4 — Total assets carried at fair value $ 7 $ — $ — $ 3 $ — $ (6) $ — $ — $ 4 $ — (1) Total realized and unrealized gains (losses) on derivative instruments are included within foreign exchange trading services. Fair Value Measurements Using Significant Unobservable Inputs Nine Months Ended September 30, 2023 Fair Value as of December 31, 2022 Total Realized and Unrealized Gains (Losses) (1) Purchases Sales Settlements Transfers into Level 3 Transfers out of Level 3 Fair Value as of September 30, 2023 (1) Change in Unrealized Gains (Losses) Related to Financial Instruments (In millions) Recorded in Revenue (1) Recorded in Other Comprehensive Income (1) Assets: Other assets: Derivative instruments: Foreign exchange contracts $ 4 $ (1) $ — $ 4 $ — $ (3) $ — $ — $ 4 $ — Total derivative instruments 4 (1) — 4 — (3) — — 4 — Total assets carried at fair value $ 4 $ (1) $ — $ 4 $ — $ (3) $ — $ — $ 4 $ — (1) Total realized and unrealized gains (losses) on derivative instruments are included within foreign exchange trading services. Fair Value Measurements Using Significant Unobservable Inputs Three Months Ended September 30, 2022 Fair Value as of June 30, 2022 Total Realized and Unrealized Gains (Losses) (1) Purchases Sales Settlements Transfers Transfers Fair Value as of September 30, 2022 (1) Change in Unrealized Gains (Losses) Related to Financial Instruments (In millions) Recorded (1) Recorded (1) Assets: Other assets: Derivative instruments: Foreign exchange contracts $ 15 $ 7 $ — $ 5 $ — $ (12) $ — $ — $ 15 $ 8 Total derivative instruments 15 7 — 5 — (12) — — 15 8 Total assets carried at fair value $ 15 $ 7 $ — $ 5 $ — $ (12) $ — $ — $ 15 $ 8 ( 1) Total realized and unrealized gains (losses) on AFS investment securities are included within gains (losses) related to investment securities, net. Total realized and unrealized gains (losses) on derivative instruments are included within foreign exchange trading services. Fair Value Measurements Using Significant Unobservable Inputs Nine Months Ended September 30, 2022 Fair Value Total Realized and Unrealized Gains (Losses) (1) Purchases Sales Settlements Transfers Transfers Fair Value as of September 30, 2022 (1) Change in Unrealized Gains (Losses) Related to Financial Instruments (In millions) Recorded (1) Recorded (1) Assets: Other assets: Derivative instruments: Foreign exchange contracts $ — $ 6 $ — $ 9 $ — $ — $ — $ — $ 15 $ 6 Total derivative instruments — 6 — 9 — — — — 15 6 Total assets carried at fair value $ — $ 6 $ — $ 9 $ — $ — $ — $ — $ 15 $ 6 ( 1) Total realized and unrealized gains (losses) on AFS investment securities are included within gains (losses) related to investment securities, net. Total realized and unrealized gains (losses) on derivative instruments are included within foreign exchange trading services. The following table presents quantitative information, as of the dates indicated, about the valuation techniques and significant unobservable inputs used in the valuation of our level 3 financial assets and liabilities measured at fair value on a recurring basis for which we use internally-developed pricing models. The significant unobservable inputs for our level 3 financial assets and liabilities whose fair value is measured using pricing information from non-binding broker/dealer quotes are not included in the table, as the specific inputs applied are not provided by the broker/dealer. Quantitative Information about Level 3 Fair Value Measurements Fair Value Range Weighted-Average (Dollars in millions) As of September 30, 2023 As of December 31, 2022 Valuation Technique Significant Unobservable Input (1) As of September 30, 2023 As of September 30, 2023 As of December 31, 2022 Significant unobservable inputs readily available to State Street: Assets: Derivative Instruments, foreign exchange contracts $ 4 $ 4 Option model Volatility 5.7 % - 13.5% 8.6 % 11.4 % Total $ 4 $ 4 Liabilities: Derivative instruments, foreign exchange contracts $ 1 $ 2 Option model Volatility 6.5 % - 14.7% 8.3 % 9.8 % Total $ 1 $ 2 (1) Significant changes in these unobservable inputs may result in significant changes in fair value measurement of the derivative instrument. 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) September 30, 2023 Financial Assets: Cash and due from banks $ 4,009 4,009 $ 4,009 $ — $ — Interest-bearing deposits with banks 76,756 76,756 — 76,756 — Securities purchased under resale agreements 1,816 1,816 — 1,816 — Investment securities held-to-maturity 61,956 54,121 11,457 42,664 — Net loans (1) 35,317 35,103 — 33,055 2,048 Other (2) 6,869 6,869 — 6,869 — Financial Liabilities: Deposits: Non-interest-bearing $ 35,824 $ 35,824 $ — $ 35,824 $ — Interest-bearing - U.S. 118,561 118,561 — 118,561 — Interest-bearing - non-U.S. 58,616 58,616 — 58,616 — Securities sold under repurchase agreements 3,097 3,097 — 3,097 — Other short-term borrowings 8 8 — 8 — Long-term debt 18,564 17,661 — 17,523 138 Other (2) 6,869 6,869 — 6,869 — (1) Includes $7 million of loans classified as held-for-sale that were measured at fair value in level 2 as of September 30, 2023. (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, 2022 Financial Assets: Cash and due from banks $ 3,970 $ 3,970 $ 3,970 $ — $ — Interest-bearing deposits with banks 101,593 101,593 — 101,593 — Securities purchased under resale agreements 5,215 5,215 — 5,215 — Investment securities held-to-maturity 64,700 57,913 11,336 46,577 — Net loans (1) 32,053 31,794 — 29,679 2,115 Other (2) 3,626 3,626 — 3,626 — Financial Liabilities: Deposits: Non-interest-bearing $ 46,755 $ 46,755 $ — $ 46,755 $ — Interest-bearing - U.S. 111,384 111,384 — 111,384 — Interest-bearing - non-U.S. 77,325 77,325 — 77,325 — Securities sold under repurchase agreements 1,177 1,177 — 1,177 — Other short-term borrowings 2,097 2,097 — 2,097 — Long-term debt 14,996 14,273 — 14,102 171 Other (2) 3,626 3,626 — 3,626 — (1) Includes $5 million of loans classified as held-for-sale that were measured at fair value in level 2 as of December 31, 2022. (2) 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	9 Months Ended
	Sep. 30, 2023
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 2022 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: September 30, 2023 December 31, 2022 Amortized Cost Gross Unrealized Fair Value Amortized Cost Gross Unrealized Fair Value (In millions) Gains Losses Gains Losses Available-for-sale: U.S. Treasury and federal agencies: Direct obligations $ 7,812 $ 12 $ 197 $ 7,627 $ 8,232 $ 10 $ 261 $ 7,981 Mortgage-backed securities (1) 10,266 — 280 9,986 8,767 2 260 8,509 Total U.S. Treasury and federal agencies 18,078 12 477 17,613 16,999 12 521 16,490 Non-U.S. debt securities: Mortgage-backed securities 1,551 1 11 1,541 1,642 — 19 1,623 Asset-backed securities (2) 1,903 1 14 1,890 1,696 — 27 1,669 Non-U.S. sovereign, supranational and non-U.S. agency 14,910 2 246 14,666 14,512 1 424 14,089 Other (3) 2,085 1 64 2,022 2,255 — 164 2,091 Total non-U.S. debt securities 20,449 5 335 20,119 20,105 1 634 19,472 Asset-backed securities: Student loans (4) 118 — — 118 116 — 1 115 Collateralized loan obligations (5) 2,649 2 11 2,640 2,394 — 39 2,355 Non-agency CMBS and RMBS (6) 268 — 4 264 237 — 6 231 Other 90 — — 90 90 — 2 88 Total asset-backed securities 3,125 2 15 3,112 2,837 — 48 2,789 State and political subdivisions 387 — 10 377 839 1 17 823 Other U.S. debt securities (7) 338 — 13 325 1,078 — 73 1,005 Total available-for-sale securities (8)(9) $ 42,377 $ 19 $ 850 $ 41,546 $ 41,858 $ 14 $ 1,293 $ 40,579 Held-to-maturity: U.S. Treasury and federal agencies: Direct obligations $ 11,758 $ — $ 289 $ 11,469 $ 11,693 $ — $ 341 $ 11,352 Mortgage-backed securities (10) 40,297 — 7,232 33,065 42,307 3 6,030 36,280 Total U.S. Treasury and federal agencies 52,055 — 7,521 44,534 54,000 3 6,371 47,632 Non-U.S. debt securities: Non-U.S. sovereign, supranational and non-U.S. agency 6,452 — 262 6,190 6,603 — 304 6,299 Total non-U.S. debt securities 6,452 — 262 6,190 6,603 — 304 6,299 Asset-backed securities: Student loans (4) 3,442 3 73 3,372 3,955 1 134 3,822 Non-agency CMBS and RMBS (11) 7 18 — 25 142 18 — 160 Total asset-backed securities 3,449 21 73 3,397 4,097 19 134 3,982 Total held-to-maturity securities (8)(12) $ 61,956 $ 21 $ 7,856 $ 54,121 $ 64,700 $ 22 $ 6,809 $ 57,913 (1) As of September 30, 2023 and December 31, 2022, the total fair value included $5.63 billion and $6.78 billion, respectively, of agency CMBS and $4.36 billion and $1.73 billion, respectively, of agency MBS. (2) As of September 30, 2023 and December 31, 2022, the fair value includes non-U.S. collateralized loan obligations of $0.97 billion and $0.86 billion, respectively. (3) As of September 30, 2023 and December 31, 2022, the fair value includes non-U.S. corporate bonds of $1.67 billion and $1.14 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 September 30, 2023 and December 31, 2022. (7) As of September 30, 2023 and December 31, 2022, the fair value of U.S. corporate bonds was $0.33 billion and $1.01 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 period ended September 30, 2023. (9) As of September 30, 2023, we had no allowance for credit losses on AFS investment securities. As of December 31, 2022, we had an allowance for credit losses on AFS investment securities of $2 million. (10) As of September 30, 2023 and December 31, 2022, the total amortized cost included $5.24 billion and $4.99 billion of agency CMBS, respectively. (11) As of September 30, 2023, the total amortized cost included $7 million of non-agency RMBS. As of December 31, 2022, the total amortized cost included $133 million of non-agency CMBS and $9 million of non-agency RMBS. (12) As of September 30, 2023, we had an allowance for credit losses on HTM investment securities of $1 million. As of December 31, 2022, we had no allowance for credit losses on HTM investment securities. Aggregate investment securities with carrying values of approximately $79.74 billion and $70.52 billion as of September 30, 2023 and December 31, 2022, respectively, were designated as pledged for public and trust deposits, short-term borrowings and for other purposes as provided by law. In the three and nine months ended September 30, 2023, proceeds from sales of AFS securities were approximately $3.87 billion and $4.57 billion, respectively, primarily driven by sales of non-U.S. sovereign and agency, corporate and municipal bonds as part of an investment portfolio repositioning in the third quarter of 2023. We recognized a pre-tax loss of approximately $294 million from these sales, in both the three and nine months ended September 30, 2023. 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: September 30, 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 $ 1,310 $ 27 $ 5,276 $ 170 $ 6,586 $ 197 Mortgage-backed securities 3,202 85 6,717 195 9,919 280 Total U.S. Treasury and federal agencies 4,512 112 11,993 365 16,505 477 Non-U.S. debt securities: Mortgage-backed securities 214 1 823 10 1,037 11 Asset-backed securities 225 — 1,124 14 1,349 14 Non-U.S. sovereign, supranational and non-U.S. agency 6,715 72 7,077 174 13,792 246 Other 855 10 902 54 1,757 64 Total non-U.S. debt securities 8,009 83 9,926 252 17,935 335 Asset-backed securities: Student loans 68 — — — 68 — Collateralized loan obligations 328 — 1,860 11 2,188 11 Non-agency CMBS and RMBS 39 1 180 3 219 4 Total asset-backed securities 435 1 2,040 14 2,475 15 State and political subdivisions 244 7 133 3 377 10 Other U.S. debt securities 3 — 323 13 326 13 Total $ 13,203 $ 203 $ 24,415 $ 647 $ 37,618 $ 850 December 31, 2022 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 $ 1,337 $ 15 $ 5,745 $ 246 $ 7,082 $ 261 Mortgage-backed securities 5,524 130 2,815 130 8,339 260 Total U.S. Treasury and federal agencies 6,861 145 8,560 376 15,421 521 Non-U.S. debt securities: Mortgage-backed securities 1,278 15 272 4 1,550 19 Asset-backed securities 859 11 765 16 1,624 27 Non-U.S. sovereign, supranational and non-U.S. agency 6,750 108 5,800 316 12,550 424 Other 771 27 1,233 137 2,004 164 Total non-U.S. debt securities 9,658 161 8,070 473 17,728 634 Asset-backed securities: Student loans 89 1 — — 89 1 Collateralized loan obligations 1,577 27 710 12 2,287 39 Non-agency CMBS and RMBS 193 6 3 — 196 6 Other 88 2 — — 88 2 Total asset-backed securities 1,947 36 713 12 2,660 48 State and political subdivisions 669 12 42 5 711 17 Other U.S. debt securities 294 15 708 58 1,002 73 Total $ 19,429 $ 369 $ 18,093 $ 924 $ 37,522 $ 1,293 The following table presents the amortized cost and the fair value of contractual maturities of debt investment securities as of September 30, 2023. 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. September 30, 2023 (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 $ 291 $ 291 $ 6,920 $ 6,730 $ 601 $ 606 $ — $ — $ 7,812 $ 7,627 Mortgage-backed securities 41 41 1,309 1,291 4,398 4,307 4,518 4,347 10,266 9,986 Total U.S. Treasury and federal agencies 332 332 8,229 8,021 4,999 4,913 4,518 4,347 18,078 17,613 Non-U.S. debt securities: Mortgage-backed securities 142 142 243 242 — — 1,166 1,157 1,551 1,541 Asset-backed securities 319 315 419 415 554 551 611 609 1,903 1,890 Non-U.S. sovereign, supranational and non-U.S. agency 5,627 5,591 6,483 6,304 2,800 2,771 — — 14,910 14,666 Other 341 335 1,570 1,515 174 172 — — 2,085 2,022 Total non-U.S. debt securities 6,429 6,383 8,715 8,476 3,528 3,494 1,777 1,766 20,449 20,119 Asset-backed securities: Student loans 33 33 — — — — 85 85 118 118 Collateralized loan obligations 122 122 345 343 1,489 1,482 693 693 2,649 2,640 Non-agency CMBS and RMBS — — 20 19 — — 248 245 268 264 Other — — 90 90 — — — — 90 90 Total asset-backed securities 155 155 455 452 1,489 1,482 1,026 1,023 3,125 3,112 State and political subdivisions 125 122 100 98 162 157 — — 387 377 Other U.S. debt securities 258 252 80 73 — — — — 338 325 Total $ 7,299 $ 7,244 $ 17,579 $ 17,120 $ 10,178 $ 10,046 $ 7,321 $ 7,136 $ 42,377 $ 41,546 Held-to-maturity: U.S. Treasury and federal agencies: Direct obligations $ 6,284 $ 6,230 $ 5,439 $ 5,206 $ 24 $ 22 $ 11 $ 11 $ 11,758 $ 11,469 Mortgage-backed securities 132 115 594 547 4,523 3,653 35,048 28,750 40,297 33,065 Total U.S. Treasury and federal agencies 6,416 6,345 6,033 5,753 4,547 3,675 35,059 28,761 52,055 44,534 Non-U.S. debt securities: Non-U.S. sovereign, supranational and non-U.S. agency 2,261 2,231 3,690 3,504 501 455 — — 6,452 6,190 Total non-U.S. debt securities 2,261 2,231 3,690 3,504 501 455 — — 6,452 6,190 Asset-backed securities: Student loans 237 231 232 231 622 612 2,351 2,298 3,442 3,372 Non-agency CMBS and RMBS 1 8 — — — — 6 17 7 25 Total asset-backed securities 238 239 232 231 622 612 2,357 2,315 3,449 3,397 Total $ 8,915 $ 8,815 $ 9,955 $ 9,488 $ 5,670 $ 4,742 $ 37,416 $ 31,076 $ 61,956 $ 54,121 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 pages 144 to 145 in Note 3 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2022 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 September 30, 2023, over 99% of our HTM and AFS investment portfolio is publicly rated investment grade. As of September 30, 2023, we had an allowance for credit losses on HTM investment securities of $1 million. As of December 31, 2022, we had no allowance for credit losses on HTM investment securities. In the third quarter of 2023, we recorded $1 million provision for credit losses and no charge-offs on HTM securities. As of September 30, 2023, we had no allowance for credit losses on AFS investment securities. As of December 31, 2022, we had an allowance for credit losses on AFS investment securities of $2 million. In the third quarter of 2023, 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	9 Months Ended
	Sep. 30, 2023
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. 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 145 to 150 in Note 4 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2022 Form 10-K. The following table presents our recorded investment in loans, by segment, as of the dates indicated: (In millions) September 30, 2023 December 31, 2022 Domestic (1) : Commercial and financial: Fund Finance (2) $ 12,732 $ 12,154 Leveraged loans 2,336 2,431 Overdrafts 1,017 1,707 Collateralized loan obligations in loan form 100 100 Other (3) 2,207 1,871 Commercial real estate 3,117 2,985 Total domestic $ 21,509 $ 21,248 Foreign (1) : Commercial and financial: Fund Finance (2) $ 4,809 $ 3,949 Leveraged loans 1,096 1,118 Overdrafts 2,576 1,094 Collateralized loan obligations in loan form 5,446 4,741 Total foreign 13,927 10,902 Total loans (4) 35,436 32,150 Allowance for credit losses (119) (97) Loans, net of allowance $ 35,317 $ 32,053 (1) Domestic and foreign categorization is based on the borrower’s country of domicile. (2) Fund finance loans include primarily $9.33 billion private equity capital call finance loans, $5.97 billion loans to real money funds and $1.19 billion loans to business development companies as of September 30, 2023, compared to $7.57 billion private equity capital call finance loans, $6.61 billion loans to real money funds and $1.11 billion loans to business development companies as of December 31, 2022. (3) Includes $1.93 billion securities finance loans, $276 million loans to municipalities and $6 million other loans as of September 30, 2023 and $1.51 billion securities finance loans, $321 million loans to municipalities and $42 million other loans as of December 31, 2022. (4) As of September 30, 2023, excluding overdrafts, floating rate loans totaled $28.85 billion and fixed rate loans totaled $2.99 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 2022 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 September 30, 2023 and December 31, 2022, the loans pledged as collateral totaled $11.56 billion and $10.17 billion, respectively. As of September 30, 2023, we had three loans totaling $76 million on non-accrual status and as of December 31, 2022, we had no loans on non-accrual status. We sold $74 million of loans in the third quarter of 2023, of which $7 million remained unsettled and was held-for-sale as of September 30, 2023. We recorded a charge-off against the allowance for these loans of $2 million in the third quarter of 2023. 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 September 30, 2023, we had 8 loans for $68 million in the commercial and financial segment and 1 loan for $47 million in the commercial real estate segment that no longer met the similar risk characteristics of their collective pool. As of September 30, 2023, $33 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 145 to 150 in Note 4 to the consolidated financial statements included under item 8, Financial Statements and Supplementary Data, in our 2022 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 September 30, 2023. 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 86% of our loans were rated as investment grade as of September 30, 2023 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 12% of our loans as of September 30, 2023, and are concentrated in leveraged loans. Approximately 92% of those leveraged loans have an external credit rating, or equivalent, of "BB" or "B" as of September 30, 2023. • 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: September 30, 2023 Commercial and Financial Commercial Real Estate Total Loans (In millions) Investment grade $ 28,160 $ 2,435 $ 30,595 Speculative 3,816 536 4,352 Special mention 268 99 367 Substandard 39 — 39 Doubtful 29 47 76 Total (1)(2) $ 32,312 $ 3,117 $ 35,429 December 31, 2022 Commercial and Financial Commercial Real Estate Total Loans (In millions) Investment grade $ 24,667 $ 2,509 $ 27,176 Speculative 4,103 388 4,491 Special mention 291 88 379 Substandard 99 — 99 Total (1)(2) $ 29,160 $ 2,985 $ 32,145 (1) Loans include $3.59 billion and $2.80 billion of overdrafts as of September 30, 2023 and December 31, 2022, respectively. Overdrafts are short-term in nature and do not present a significant credit risk to us. As of September 30, 2023, $3.21 billion overdrafts were investment grade and $0.38 billion overdrafts were speculative. (2) Total does not include $7 million and $5 million of loans classified as held-for-sale as of September 30, 2023 and December 31, 2022, respectively. For additional information about credit quality, refer to pages 146 to 150 in Note 4 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2022 Form 10-K. The following table presents the amortized cost basis, by year of origination and credit quality indicator, as of September 30, 2023. 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) 2023 2022 2021 2020 2019 Prior Revolving Loans Total (1) Domestic loans: Commercial and financial: Risk Rating: Investment grade $ 1,095 $ 100 $ 204 $ 61 $ 272 $ 6 $ 13,930 $ 15,668 Speculative 458 264 749 113 334 185 347 2,450 Special mention — — 155 — 57 — — 212 Substandard 20 — — 5 — — — 25 Doubtful 5 — 24 — — — — 29 Total commercial and financing $ 1,578 $ 364 $ 1,132 $ 179 $ 663 $ 191 $ 14,277 $ 18,384 Commercial real estate: Risk Rating: Investment grade $ 215 $ 500 $ 498 $ 100 $ 375 $ 747 $ — $ 2,435 Speculative — 20 31 50 144 291 — 536 Special mention — — — — 22 77 — 99 Doubtful — — — — — 47 — 47 Total commercial real estate $ 215 $ 520 $ 529 $ 150 $ 541 $ 1,162 $ — $ 3,117 Non-U.S. loans: Commercial and financial: Risk Rating: Investment grade $ 3,031 $ 1,982 $ 2,793 $ — $ — $ — $ 4,686 $ 12,492 Speculative 483 131 502 75 104 71 — 1,366 Special mention — — 28 28 — — — 56 Substandard — — — — — 14 — $ 14 Total commercial and financing $ 3,514 $ 2,113 $ 3,323 $ 103 $ 104 $ 85 $ 4,686 $ 13,928 Total loans (2) $ 5,307 $ 2,997 $ 4,984 $ 432 $ 1,308 $ 1,438 $ 18,963 $ 35,429 (1) Any reserve associated with accrued interest is not material. As of September 30, 2023, accrued interest receivable of $325 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 $7 million of loans classified as held-for-sale as of September 30, 2023. The following table presents the amortized cost basis, by year of origination and credit quality indicator as of December 31, 2022: (In millions) 2022 2021 2020 2019 2018 Prior Revolving Loans Total (1) Domestic loans: Commercial and financial: Risk Rating: Investment grade $ 1,577 $ 185 $ 72 $ 300 $ — $ 9 $ 12,843 $ 14,986 Speculative 523 859 168 461 236 151 545 2,943 Special mention — 120 — 105 19 — — 244 Substandard — — 5 42 31 7 — 85 Total commercial and financing $ 2,100 $ 1,164 $ 245 $ 908 $ 286 $ 167 $ 13,388 $ 18,258 Commercial real estate: Risk Rating: Investment grade $ 519 $ 612 $ 100 $ 330 $ 511 $ 436 $ — $ 2,508 Speculative — — 49 163 111 65 — 388 Special mention — — — 49 40 — — 89 Total commercial real estate $ 519 $ 612 $ 149 $ 542 $ 662 $ 501 $ — $ 2,985 Non-U.S. loans: Commercial and financial: Risk Rating: Investment grade $ 2,986 $ 2,799 $ — $ — $ — $ — $ 3,897 $ 9,682 Speculative 234 529 100 181 107 — 9 1,160 Special mention — — 18 5 23 — — 46 Substandard — — — — 14 — — 14 Total commercial and financing $ 3,220 $ 3,328 $ 118 $ 186 $ 144 $ — $ 3,906 $ 10,902 Total loans (2) $ 5,839 $ 5,104 $ 512 $ 1,636 $ 1,092 $ 668 $ 17,294 $ 32,145 (1) Any reserve associated with accrued interest is not material. As of December 31, 2022, accrued interest receivable of $200 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 $5 million of loans classified as held-for-sale as of December 31, 2022. The following tables present the activity in the allowance for credit losses by portfolio and class for the periods indicated: Three Months Ended September 30, 2023 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 $ 80 $ 3 $ 37 $ — $ — $ 15 $ 1 $ 136 Charge-offs (2) — — — — — — (2) Provision (6) — 7 — 1 (1) (1) — Ending balance $ 72 $ 3 $ 44 $ — $ 1 $ 14 $ — $ 134 (1) Includes $2 million allowance for credit losses on Fund Finance loans and $1 million on other loans. Nine Months Ended September 30, 2023 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 $ 73 $ 5 $ 19 $ 2 $ — $ 23 $ (1) $ 121 Charge-offs (13) — — — — — — (13) Provision 12 (2) 25 (2) 1 (9) 1 26 Ending balance $ 72 $ 3 $ 44 $ — $ 1 $ 14 $ — $ 134 (1) Includes $2 million allowance for credit losses on Fund Finance loans and $1 million on other loans. Three Months Ended September 30, 2022 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 $ 69 $ 10 $ 16 $ 2 $ 17 $ — $ 114 Charge-offs — — — — — — — Provision 6 (5) 2 (1) (2) — — Ending balance $ 75 $ 5 $ 18 $ 1 $ 15 $ — $ 114 (1) Includes $4 million allowance for credit losses on Fund Finance loans and $1 million on other loans. Nine Months Ended September 30, 2022 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 $ 61 $ 12 $ 14 $ 2 $ 19 $ — $ 108 Charge-offs (4) — — — — — (4) Provision 18 (7) 4 (1) (4) — 10 Ending balance $ 75 $ 5 $ 18 $ 1 $ 15 $ — $ 114 (1) Includes $4 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. We recorded no provision for credit losses in the third quarter of 2023, as an increase in reserves for commercial real estate loans was offset by a reduction in reserves related to leveraged loans. There was no provision for credit losses recorded in the third quarter of 2022. 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 September 30, 2023, 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	9 Months Ended
	Sep. 30, 2023
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, 2021 $ 7,354 $ 267 $ 7,621 Acquisitions 3 — 3 Foreign currency translation (125) (4) (129) Ending balance December 31, 2022 $ 7,232 $ 263 $ 7,495 Foreign currency translation (8) — (8) Ending balance September 30, 2023 $ 7,224 $ 263 $ 7,487 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, 2021 $ 1,746 $ 70 $ 1,816 Amortization (217) (21) (238) Foreign currency translation (34) — (34) Ending balance December 31, 2022 1,495 49 1,544 Amortization (164) (16) (180) Foreign currency translation (1) — (1) Ending balance September 30, 2023 $ 1,330 $ 33 $ 1,363 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: September 30, 2023 Gross Accumulated Net (In millions) Other intangible assets: Client relationships $ 2,722 $ (1,743) $ 979 Technology 401 (206) 195 Core deposits 681 (501) 180 Other 83 (74) 9 Total $ 3,887 $ (2,524) $ 1,363 December 31, 2022 Gross Accumulated Net (In millions) Other intangible assets: Client relationships $ 2,728 $ (1,626) $ 1,102 Technology 402 (178) 224 Core deposits 683 (477) 206 Other 84 (72) 12 Total $ 3,897 $ (2,353) $ 1,544

Other Assets

Other Assets	9 Months Ended
	Sep. 30, 2023
Other Assets [Abstract]
Other Assets	Other Assets The following table presents the components of other assets as of the dates indicated: (In millions) September 30, 2023 December 31, 2022 Securities borrowed (1) $ 24,065 $ 16,489 Derivative instruments, net 7,804 7,664 Bank-owned life insurance 3,730 3,649 Collateral, net 3,104 1,833 Investments in joint ventures and other unconsolidated entities (2) 2,840 3,245 Deferred tax assets, net of valuation allowance (3) 1,020 1,127 Right-of-use assets 823 500 Receivable for securities settlement 670 383 Prepaid expenses 610 558 Accounts receivable 472 404 Income taxes receivable 238 235 Deposits with clearing organizations 58 62 Other (4) 1,798 1,753 Total $ 47,232 $ 37,902 (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 $181 million and $179 million as of September 30, 2023 and December 31, 2022, respectively. For both the three and nine months ended September 30, 2023, $5 million of 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

Derivative Financial Instrument

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2023
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 154 and 155 in Note 10 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2022 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 154 and 155 in Note 10 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2022 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 September 30, 2023, is approximately $210 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) September 30, 2023 December 31, 2022 Derivatives not designated as hedging instruments: Interest rate contracts: Futures $ 15,704 $ 8,683 Foreign exchange contracts: Forward, swap and spot 2,379,456 2,267,221 Options purchased 683 607 Options written 278 445 Futures 148 1,550 Other: Futures 130 — Stable value contracts (1) 29,490 31,391 Deferred value awards (2) 320 300 Derivatives designated as hedging instruments: Interest rate contracts: Swap agreements 20,453 22,566 Foreign exchange contracts: Forward and swap 9,279 8,213 (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 158 in Note 10 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2022 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) September 30, 2023 December 31, 2022 September 30, 2023 December 31, 2022 Derivatives not designated as hedging instruments: Foreign exchange contracts $ 20,090 $ 26,081 $ 20,103 $ 25,407 Other derivative contracts — — 196 216 Total $ 20,090 $ 26,081 $ 20,299 $ 25,623 Derivatives designated as hedging instruments: Foreign exchange contracts $ 518 $ 105 $ 3 $ 342 Interest rate contracts 1 — 1 1 Total $ 519 $ 105 $ 4 $ 343 (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 September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (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 $ 198 $ 207 $ 621 $ 676 Foreign exchange contracts Interest expense (24) (16) (40) — Interest rate contracts Foreign exchange trading services revenue (3) — (2) — Other derivative contracts Other fee revenue 6 — 5 — Other derivative contracts Compensation and employee benefits (21) (11) (99) (75) Total $ 156 $ 180 $ 485 $ 601 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: September 30, 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 $ 13,960 $ (594) $ 176 Available-for-sale securities (2)(3) 9,957 (767) 4 December 31, 2022 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 $ 12,513 $ (644) $ 362 Available-for-sale securities (2)(3) 9,801 (675) 8 (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 September 30, 2023 and December 31, 2022, the amortized cost of the closed portfolios used in these hedging relationships was $699 million and $207 million, respectively, of which $400 million and $64 million, respectively, was designated under the portfolio layer hedging relationship. At September 30, 2023 and December 31, 2022, the cumulative adjustment associated with these hedging relationships was ($16) million and ($4) million, respectively. (3) Carrying amount represents amortized cost. As of September 30, 2023 and December 31, 2022, the total notional amount of the interest rate swaps of fair value hedges was $19.59 billion and $20.32 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 September 30, Three Months Ended September 30, 2023 2022 2023 2022 (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 $ 57 $ 349 Available-for-sale securities (1) Net interest income $ (57) $ (349) Interest rate contracts Net interest income (76) (261) Long-term debt Net interest income 76 261 Total $ (19) $ 88 $ 19 $ (88) Nine Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (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 $ 99 707 Available-for-sale securities (2) Net interest income $ (100) $ (709) Interest rate contracts Net interest income (52) (600) Long-term debt Net interest income 52 600 Total $ 47 $ 107 $ (48) $ (109) (1) In the three months ended September 30, 2023, approximately $36 million of net unrealized gains on AFS investment securities designated in fair value hedges were recognized in OCI compared to $256 million of net unrealized gains in the same period of 2022. (2) In the nine months ended September 30, 2023, approximately $70 million of net unrealized gains on AFS investment securities designated in fair value hedges were recognized in OCI compared to $526 million of net unrealized gains in the same period of 2022. Three Months Ended September 30, Three Months Ended September 30, 2023 2022 Location of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income 2023 2022 (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) $ (1) $ (222) Net interest income $ (53) $ (22) Foreign exchange contracts 33 39 Net interest income — — Total derivatives designated as cash flow hedges $ 32 $ (183) $ (53) $ (22) Derivatives designated as net investment hedges: Foreign exchange contracts $ 225 $ 395 $ — $ — Total derivatives designated as net investment hedges 225 395 — — Total $ 257 $ 212 $ (53) $ (22) Nine Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (In millions) Amount of Gain or (Loss) Recognized in Other Comprehensive Income on Derivative Location of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income Derivatives designated as cash flow hedges: Interest rate contracts $ (4) $ (604) Net interest income $ (156) $ 3 Foreign exchange contracts 115 215 Net interest income 1 6 Total derivatives designated as cash flow hedges $ 111 $ (389) $ (155) $ 9 Derivatives designated as net investment hedges: Foreign exchange contracts $ 176 $ 723 $ — $ — Total derivatives designated as net investment hedges 176 723 — — Total $ 287 $ 334 $ (155) $ 9 (1) As of September 30, 2023, 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 September 30, 2023 totaled approximately $5.08 billion, against which we provided $4.07 billion of collateral in the normal course of business. If our credit related contingent features underlying these agreements were triggered as of September 30, 2023, the maximum additional collateral we would be required to post to our counterparties is approximately $1.01 billion.

Offsetting Arrangements

Offsetting Arrangements	9 Months Ended
	Sep. 30, 2023
Offsetting [Abstract]
Offsetting Arrangements	Offsetting Arrangements For additional information on our offsetting arrangements, refer to page 158 in Note 11 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2022 Form 10-K. As of September 30, 2023 and December 31, 2022, the value of securities received as collateral from third parties where we are permitted to transfer or re-pledge the securities totaled $10.38 billion and $8.14 billion, respectively, and the fair value of the portion that had been transferred or re-pledged as of the same dates was $6.18 billion and $3.63 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: September 30, 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 $ 20,608 $ (11,006) $ 9,602 $ — $ 9,602 Interest rate contracts (6) 1 — 1 — 1 Cash collateral and securities netting NA (1,799) (1,799) (820) (2,619) Total derivatives 20,609 (12,805) 7,804 (820) 6,984 Other financial instruments: Resale agreements and securities borrowing (7)(8) 213,229 (187,348) 25,881 (24,436) 1,445 Total derivatives and other financial instruments $ 233,838 $ (200,153) $ 33,685 $ (25,256) $ 8,429 Assets: December 31, 2022 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 $ 26,186 $ (15,224) $ 10,962 $ — $ 10,962 Interest rate contracts (6) — — — — — Cash collateral and securities netting NA (3,298) (3,298) (1,717) (5,015) Total derivatives 26,186 (18,522) 7,664 (1,717) 5,947 Other financial instruments: Resale agreements and securities borrowing (7)(8) 125,797 (104,093) 21,704 (20,960) 744 Total derivatives and other financial instruments $ 151,983 $ (122,615) $ 29,368 $ (22,677) $ 6,691 (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 $25.88 billion as of September 30, 2023 were $1.82 billion of resale agreements and $24.06 billion of collateral provided related to securities borrowing. Included in the $21.70 billion as of December 31, 2022 were $5.21 billion of resale agreements and $16.49 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: September 30, 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 $ 20,106 $ (11,006) $ 9,100 $ — $ 9,100 Interest rate contracts (6) 1 — 1 — 1 Other derivative contracts 196 — 196 — 196 Cash collateral and securities netting NA (4,015) (4,015) (1,081) (5,096) Total derivatives 20,303 (15,021) 5,282 (1,081) 4,201 Other financial instruments: Repurchase agreements and securities lending (7)(8) 203,469 (187,348) 16,121 (15,790) 331 Total derivatives and other financial instruments $ 223,772 $ (202,369) $ 21,403 $ (16,871) $ 4,532 Liabilities: December 31, 2022 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 $ 25,749 $ (15,224) $ 10,525 $ — $ 10,525 Interest rate contracts (6) 1 — 1 — 1 Other derivative contracts 216 — 216 — 216 Cash collateral and securities netting NA (2,727) (2,727) (908) (3,635) Total derivatives 25,966 (17,951) 8,015 (908) 7,107 Other financial instruments: Repurchase agreements and securities lending (7)(8) 111,653 (104,093) 7,560 (6,433) 1,127 Total derivatives and other financial instruments $ 137,619 $ (122,044) $ 15,575 $ (7,341) $ 8,234 (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 $16.12 billion as of September 30, 2023 were $3.10 billion of repurchase agreements and $13.02 billion of collateral received related to securities lending transactions. Included in the $7.56 billion as of December 31, 2022 were $1.18 billion of repurchase agreements and $6.38 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 September 30, 2023 As of December 31, 2022 (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 $ 186,824 $ — $ 178 $ — $ 187,002 $ 100,899 $ — $ 200 $ — $ 101,099 Non-U.S. sovereign debt — — — — — 702 — — — 702 Total 186,824 — 178 — 187,002 101,601 — 200 — 101,801 Securities lending transactions: US Treasury and agency securities 8 — — — 8 44 — — — 44 Corporate debt securities 144 — 12 — 156 67 — — — 67 Equity securities 7,503 15 20 1,896 9,434 4,509 — — 1,606 6,115 Other (1) 6,869 — — — 6,869 3,626 — — — 3,626 Total 14,524 15 32 1,896 16,467 8,246 — — 1,606 9,852 Gross amount of recognized liabilities for repurchase agreements and securities lending $ 201,348 $ 15 $ 210 $ 1,896 $ 203,469 $ 109,847 $ — $ 200 $ 1,606 $ 111,653 (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	9 Months Ended
	Sep. 30, 2023
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 161 in Note 12 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2022 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) September 30, 2023 December 31, 2022 Commitments: Unfunded credit facilities $ 34,149 $ 31,208 Guarantees (1) : Indemnified securities financing $ 269,180 $ 348,924 Standby letters of credit 1,527 2,125 (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 76% of our unfunded commitments to extend credit expire within one year as of September 30, 2023, compared to approximately 77% as of December 31, 2022. Indemnified Securities Financing For additional information on our indemnified securities financing, refer to page 161 in Note 12 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2022 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) September 30, 2023 December 31, 2022 Fair value of indemnified securities financing $ 269,180 $ 348,924 Fair value of cash and securities held by us, as agent, as collateral for indemnified securities financing 281,856 366,895 Fair value of collateral for indemnified securities financing invested in indemnified repurchase agreements 58,722 54,114 Fair value of cash and securities held by us or our agents as collateral for investments in indemnified repurchase agreements 63,263 57,903 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 September 30, 2023 and December 31, 2022, we had approximately $24.06 billion and $16.49 billion, respectively, of collateral provided and approximately $13.02 billion and $6.38 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 FICC, 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 to FICC is depleted. It is difficult to estimate our maximum possible exposure under the membership agreement, since this would require an assessment of future claims that may be made against us that have not yet occurred. At both September 30, 2023 and December 31, 2022, 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	9 Months Ended
	Sep. 30, 2023
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 September 30, 2023, our aggregate accruals for loss contingencies for legal, regulatory and related matters totaled approximately $17 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 September 30, 2023, for those matters for which we have accrued probable loss contingencies (including the Invoicing Matter described below) 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 $70 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. Invoicing Matter In 2015, we determined that we had incorrectly invoiced clients for certain expenses. We have reimbursed most of our affected customers for those expenses, and we have implemented enhancements to our billing processes. In connection with our enhancements to our billing processes, we continue to review historical billing practices and may from time to time identify additional remediation. In 2017, we identified an additional area of incorrect expense billing associated with mailing services in our retirement services business. We currently expect the cumulative total of our payments to customers for these invoicing errors, including the error in the retirement services business, to be at least $350 million, all of which has been paid or is accrued. However, we may identify additional remediation costs. In March 2017, a purported class action was commenced against us alleging that our invoicing practices violated duties owed to retirement plan customers under the Employee Retirement Income 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. In addition, we have received a purported class action demand letter alleging that our invoicing practices were unfair and deceptive under Massachusetts law. A class of customers, or particular customers, may assert that we have not paid to them all amounts incorrectly invoiced, and may seek double or treble damages under Massachusetts law. We resolved potential criminal claims that arose from these matters by entering into a deferred prosecution agreement with the office of the United States Attorney for the District of Massachusetts and paying a $115 million penalty in May 2021. In June 2019, we reached an agreement with the SEC to settle its claims that we violated the recordkeeping provisions of Section 34(b) of the Investment Company Act of 1940 and caused violations of Section 31(a) of the Investment Company Act and Rules 31a-1(a) and 31a-1(b) thereunder in connection with our overcharges of customers which are registered investment companies. In reaching this settlement, we neither admitted nor denied the claims contained in the SEC’s order, and agreed to pay a civil monetary penalty of $40 million. Also in June 2019, we reached an agreement with the Massachusetts Attorney General’s office to resolve its claims related to this matter. In reaching this settlement, we neither admitted nor denied the claims in the order, and agreed to pay a civil monetary penalty of $5.5 million. The SEC and Massachusetts Attorney General’s office settlements both recognize that the payment of $48.8 million in disgorgement and interest is satisfied by our direct reimbursements of our customers. We paid fines to resolve claims of the Securities Divisions of the Secretaries of the State of Massachusetts and New Hampshire. The costs associated with the settlements discussed above were within our related and previously established accruals for loss contingencies. We have not resolved certain claims that may be made by the U.S. Department of Labor. We do not know whether any such claims will be brought, and there can be no assurance that any settlement of any such claims will be reached on financial terms acceptable to us or at all. The aggregate amount of penalties that may potentially be imposed upon us in connection with the resolution of any such matters is not currently known. 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 and the other named defendants deny the alleged claims and are proceeding with a defense of the matter. 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. 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 $204 million and $285 million as of September 30, 2023 and December 31, 2022, 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 2013. Management believes that we have sufficiently

Variable Interest Entities

Variable Interest Entities	9 Months Ended
	Sep. 30, 2023
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 164 to 165 in Note 14 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, "Variable Interest Entities", in our 2022 Form 10-K. Interests in Investment Funds As of both September 30, 2023 and December 31, 2022, we had no consolidated funds. As of both September 30, 2023 and December 31, 2022, 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 $16 million and $15 million as of September 30, 2023 and December 31, 2022, respectively, 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 September 30, 2023 and December 31, 2022, our potential maximum loss exposure related to these unconsolidated entities totaled $1.30 billion and $1.60 billion, respectively, most of which represented the carrying value of our investments which are recorded in other assets in our consolidated statement of condition. State Street accounts for our low-income housing tax credit investments (LIHTC) under the proportional amortization method. Effective January 1, 2023, State Street has 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 September 30, 2023, we had investments in LIHTC and production tax credit investments of $841 million and $301 million, respectively, which are included in other assets in our consolidated statement of condition. Deferred contributions related to LIHTC investments were $198 million at September 30, 2023. These deferred contributions are payable in accordance with the respective agreements and are expected to be paid through 2038. Contingent contributions related to the renewable energy production tax credit investments were $48 million at September 30, 2023. These contributions are contingent on production and expected to be paid through 2029. 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 September 30, 2023 Nine Months Ended September 30, 2023 Income (loss) recorded on investments within other fee revenue $ 8 $ 23 Income recorded in total revenue 8 23 Tax credits and benefits recognized in income tax expense 68 202 Proportional amortization recognized in income tax expense (52) (156) Net benefits included in income tax expense 16 46 Net benefit attributable to tax-advantaged investments included in the consolidated statement of income $ 24 $ 69

Shareholders' Equity

Shareholders' Equity	9 Months Ended
	Sep. 30, 2023
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 September 30, 2023: 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 September 30, 2023 Redemption Date (2) Series D February 2014 30,000,000 $ 750 1/4,000th $ 100,000 $ 25 5.9% to but excluding March 15, 2024, then 9.008% (3) Quarterly $ 742 March 15, 2024 Series F (4) May 2015 250,000 250 1/100th 100,000 1,000 Floating rate equal to the three-month CME term SOFR plus 3.859%, or 9.268% effective September 15, 2023 Quarterly 247 September 15, 2020 Series G April 2016 20,000,000 500 1/4,000th 100,000 25 5.35% (5) Quarterly 493 March 15, 2026 Series H September 2018 500,000 500 1/100th 100,000 1,000 5.625% to but excluding December 15, 2023, then a floating rate equal to the three-month CME term SOFR plus 2.801% (6) Semi-annually 494 December 15, 2023 (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 D preferred stock that begins on March 15, 2024 and all subsequent floating rate periods will transition to a new, fixed rate in accordance with the LIBOR Act and the contractual terms of the Series D preferred stock. (4) Series F preferred stock is redeemable on September 15, 2020 and on each succeeding dividend payment date. (5) 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. (6) In accordance with the LIBOR Act, the benchmark interest rate to be used to calculate the dividend rate during the floating rate period of the Series H preferred stock that begins on December 15, 2023 will transition from USD LIBOR to CME Term SOFR, plus 0.26161%. 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 September 30, 2023 2022 (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 2,338 23.38 6 1,387 13.87 3 Series G 1,338 0.33 7 1,338 0.33 7 Total $ 24 $ 21 Nine Months Ended September 30, 2023 2022 (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 $ 4,425 $ 1.11 $ 33 $ 4,425 $ 1.11 $ 33 Series F 6,592 65.92 17 3,467 34.67 9 Series G 4,013 1.00 20 4,014 0.99 20 Series H 2,813 28.13 14 2,813 28.13 14 Total $ 84 $ 76 Common Stock In January 2023, our Board approved a share repurchase program authorizing the purchase of up to $4.5 billion of our common stock through December 31, 2023. We repurchased $1.00 billion of our common stock in the third quarter of 2023 under our 2023 share repurchase authorization. The table below presents the activity under our common share repurchase program for the period indicated: Three Months Ended September 30, 2023 Nine Months Ended September 30, 2023 Shares Acquired Average Cost per Share Total Acquired Shares Acquired (In millions) Average Cost per Share Total Acquired (In millions) 2023 Program 13.8 $ 72.23 $ 1,000 42.3 $ 78.08 $ 3,300 The tables below present the dividends declared on common stock for the periods indicated: Three Months Ended September 30, 2023 2022 Dividends Declared per Share Total (In millions) Dividends Declared per Share Total (In millions) Common Stock $ 0.69 $ 213 $ 0.63 $ 232 Nine Months Ended September 30, 2023 2022 Dividends Declared per Share Total (In millions) Dividends Declared per Share Total (In millions) Common Stock $ 1.95 $ 628 $ 1.77 $ 651 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 83 49 — (145) 176 163 Increase (decrease) due to amounts reclassified from accumulated other comprehensive income 113 378 12 — — 503 Other comprehensive income (loss) 196 427 12 (145) 176 666 Balance as of September 30, 2023 $ (163) $ (1,390) $ (131) $ (1,896) $ 535 $ (3,045) 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, 2021 $ (2) $ (50) $ (130) $ (1,019) $ 68 $ (1,133) Other comprehensive income (loss) before reclassifications (344) (2,041) (1) (1,569) 723 (3,232) Increase (decrease) due to amounts reclassified from accumulated other comprehensive income (6) 84 19 — — 97 Other comprehensive income (loss) (350) (1,957) 18 (1,569) 723 (3,135) Balance as of September 30, 2022 $ (352) $ (2,007) $ (112) $ (2,588) $ 791 $ (4,268) (1) Includes after-tax net unamortized unrealized gains (losses) related to AFS investment securities that have been transferred to HTM of ($578) million and ($749) million as of September 30, 2023 and December 31, 2022, respectively. The following tables present after-tax reclassifications into earnings for the periods indicated: Three Months Ended September 30, 2023 2022 (In millions) Amounts Reclassified into Earnings Affected Line Item in Consolidated Statement of Income Investment securities: Net realized (gains) losses from sales of available-for-sale securities, net of related taxes of $81, and $0, respectively $ 213 $ — Net gains (losses) from sales of available-for-sale securities Losses reclassified from accumulated other comprehensive income into income, net of related taxes of $22 and $22, respectively 59 60 Net interest income Cash flow hedges: Losses (gains) reclassified from accumulated other comprehensive income into income, net of related taxes of $14 and $6, respectively 39 16 Net interest income Retirement plans: Amortization of actuarial losses, net of related taxes of $0 and $1, respectively — 2 Compensation and employee benefits expenses Total amounts reclassified from accumulated other comprehensive income $ 311 $ 78 Nine Months Ended September 30, 2023 2022 (In millions) Amounts Reclassified into Earnings Affected Line Item in Consolidated Statement of Income Investment securities: Net realized (gains) losses from sales of available-for-sale securities, net of related taxes of $81 and $1, respectively $ 213 $ 1 Net gains (losses) from sales of available-for-sale securities Losses reclassified from accumulated other comprehensive income into income, net of related taxes of $61 and $31, respectively 165 83 Net interest income Cash flow hedges: Losses (gains) reclassified from accumulated other comprehensive income into income, net of related taxes of $42 and $(3), respectively 113 (6) Net interest income Retirement plans: Amortization of actuarial losses, net of related taxes of $5 and $8, respectively 12 19 Compensation and employee benefits expenses Total amounts reclassified from accumulated other comprehensive income $ 503 $ 97

Regulatory Capital

Regulatory Capital	9 Months Ended
	Sep. 30, 2023
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 167 to 168 in Note 16 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2022 Form 10-K. As of September 30, 2023, we and State Street Bank exceeded all regulatory capital adequacy requirements to which we were subject to. As of September 30, 2023, 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 September 30, 2023 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 September 30, 2023 Basel III Standardized Approach September 30, 2023 Basel III Advanced Approaches December 31, 2022 Basel III Standardized Approach December 31, 2022 Basel III Advanced Approaches September 30, 2023 Basel III Standardized Approach September 30, 2023 Basel III Advanced Approaches December 31, 2022 Basel III Standardized Approach December 31, 2022 Common shareholders' equity: Common stock and related surplus $ 11,239 $ 11,239 $ 11,234 $ 11,234 $ 13,033 $ 13,033 $ 13,033 $ 13,033 Retained earnings 27,993 27,993 27,028 27,028 15,407 15,407 16,975 16,975 Accumulated other comprehensive income (loss) (3,045) (3,045) (3,711) (3,711) (2,756) (2,756) (3,428) (3,428) Treasury stock, at cost (14,542) (14,542) (11,336) (11,336) — — — — Total 21,645 21,645 23,215 23,215 25,684 25,684 26,580 26,580 Regulatory capital adjustments: Goodwill and other intangible assets, net of associated deferred tax liabilities (8,352) (8,352) (8,545) (8,545) (8,096) (8,096) (8,288) (8,288) Other adjustments (1) (289) (289) (123) (123) (206) (206) (19) (19) Common equity tier 1 capital 13,004 13,004 14,547 14,547 17,382 17,382 18,273 18,273 Preferred stock 1,976 1,976 1,976 1,976 — — — — Tier 1 capital 14,980 14,980 16,523 16,523 17,382 17,382 18,273 18,273 Qualifying subordinated long-term debt 1,374 1,374 1,376 1,376 538 538 542 542 Allowance for credit losses 3 134 — 120 3 134 — 120 Total capital $ 16,357 $ 16,488 $ 17,899 $ 18,019 $ 17,923 $ 18,054 $ 18,815 $ 18,935 Risk-weighted assets: Credit risk (2) $ 62,206 $ 116,045 $ 61,108 $ 105,739 $ 56,273 $ 114,662 $ 54,675 $ 104,184 Operational risk (3) 42,677 NA 42,763 NA 42,299 NA 42,325 NA Market risk 1,963 1,963 1,488 1,488 1,963 1,963 1,488 1,488 Total risk-weighted assets $ 106,846 $ 118,008 $ 105,359 $ 107,227 $ 100,535 $ 116,625 $ 98,488 $ 105,672 Adjusted quarterly average assets $ 259,086 $ 259,086 $ 275,678 $ 275,678 $ 256,408 $ 256,408 $ 273,220 $ 273,220 Capital Ratios: 2023 Minimum Requirements (4) 2022 Minimum Requirements (4) Common equity tier 1 capital 8.0 % 8.0 % 12.2 % 11.0 % 13.8 % 13.6 % 17.3 % 14.9 % 18.6 % 17.3 % Tier 1 capital 9.5 9.5 14.0 12.7 15.7 15.4 17.3 14.9 18.6 17.3 Total capital 11.5 11.5 15.3 14.0 17.0 16.8 17.8 15.5 19.1 17.9 Tier 1 leverage (5) 4.0 4.0 5.8 5.8 6.0 6.0 6.8 6.8 6.7 6.7 (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 OTC 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%. (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 Not applicable

Net Interest Income

Net Interest Income	9 Months Ended
	Sep. 30, 2023
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 September 30, Nine Months Ended September 30, (In millions) 2023 2022 2023 2022 Interest income: Interest-bearing deposits with banks $ 693 $ 202 $ 2,031 $ 281 Investment securities: Investment securities available-for-sale 464 176 1,218 452 Investment securities held-to-maturity 314 271 954 672 Total investment securities 778 447 2,172 1,124 Securities purchased under resale agreements 65 57 223 105 Loans 492 256 1,330 627 Other interest-earning assets 300 139 831 189 Total interest income 2,328 1,101 6,587 2,326 Interest expense: Interest-bearing deposits 1,332 300 3,479 260 Securities sold under repurchase agreements 6 2 28 5 Short-term borrowings 2 — 34 1 Long-term debt 241 97 635 234 Other interest-bearing liabilities 123 42 330 73 Total interest expense 1,704 441 4,506 573 Net interest income $ 624 $ 660 $ 2,081 $ 1,753

Expenses

Expenses	9 Months Ended
	Sep. 30, 2023
Other Expenses [Abstract]
Expenses	Expenses The following table presents the components of other expenses for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, (In millions) 2023 2022 2023 2022 Professional services $ 99 $ 92 $ 315 $ 273 Sales advertising and public relations 38 28 91 69 Regulatory fees and assessments 18 19 62 63 Securities processing 10 21 35 41 Bank operations 9 11 33 24 Donations 13 7 26 20 Other 98 96 279 289 Total other expenses $ 285 $ 274 $ 841 $ 779 Acquisition and Restructuring Costs We had no acquisition and restructuring costs in both the three and nine months ended September 30, 2023, compared to $13 million and $34 million in the same periods of 2022, respectively, related to the BBH Investor Services acquisition transaction that we are no longer pursuing. 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, 2021 $ 68 $ 6 $ 74 Payments and Other Adjustments (17) (1) (18) Accrual Balance at March 31, 2022 51 5 56 Payments and Other Adjustments (11) — (11) Accrual Balance at June 30, 2022 40 5 45 Payments and Other Adjustments (5) — (5) Accrual Balance at September 30, 2022 $ 35 $ 5 $ 40 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 Payments and Other Adjustments (16) (1) (17) Accrual Balance at June 30, 2023 53 3 56 Payments and Other Adjustments (12) (2) (14) Accrual Balance at September 30, 2023 $ 41 $ 1 $ 42

Earnings Per Common Share

Earnings Per Common Share	9 Months Ended
	Sep. 30, 2023
Earnings Per Share [Abstract]
Earnings Per Common Share	Earnings Per Common Share For additional information on our EPS calculation methodologies, refer to page 175 in Note 23 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2022 Form 10-K. The following table presents the computation of basic and diluted earnings per common share for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, (Dollars in millions, except per share amounts) 2023 2022 2023 2022 Net income $ 422 $ 690 $ 1,734 $ 2,041 Less: Preferred stock dividends (24) (21) (84) (76) Dividends and undistributed earnings allocated to participating securities (1) — — (1) (1) Net income available to common shareholders $ 398 $ 669 $ 1,649 $ 1,964 Average common shares outstanding (In thousands): Basic average common shares 313,147 367,789 327,776 367,240 Effect of dilutive securities: equity-based awards 4,182 4,629 4,235 4,954 Diluted average common shares 317,329 372,418 332,011 372,194 Anti-dilutive securities (2) 1,683 1,592 1,368 904 Earnings per common share: Basic $ 1.27 $ 1.82 $ 5.03 $ 5.35 Diluted (3) 1.25 1.80 4.97 5.28 (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 169 to 171 in Note 18 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2022 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	9 Months Ended
	Sep. 30, 2023
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 175 to 177 in Note 24 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2022 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 September 30, Investment Investment Other Total (Dollars in millions) 2023 2022 2023 2022 2023 2022 2023 2022 Servicing fees $ 1,234 $ 1,219 $ — $ — $ — $ — $ 1,234 $ 1,219 Management fees — — 479 472 — — 479 472 Foreign exchange trading services 278 293 35 26 — — 313 319 Securities finance 98 105 5 5 — — 103 110 Software and processing fees 188 184 — — — — 188 184 Other fee revenue 41 12 3 (17) — — 44 (5) Total fee revenue 1,839 1,813 522 486 — — 2,361 2,299 Net interest income 620 663 4 (3) — — 624 660 Total other income — — — — (294) — (294) — Total revenue 2,459 2,476 526 483 (294) — 2,691 2,959 Provision for credit losses — — — — — — — — Total expenses 1,798 1,760 379 335 3 15 2,180 2,110 Income before income tax expense $ 661 $ 716 $ 147 $ 148 $ (297) $ (15) $ 511 $ 849 Pre-tax margin 27 % 29 % 28 % 31 % 19 % 29 % Nine Months Ended September 30, Investment Investment Other Total (Dollars in millions) 2023 2022 2023 2022 2023 2022 2023 2022 Servicing fees $ 3,710 $ 3,884 $ — $ — $ — $ — $ 3,710 $ 3,884 Management fees — — 1,397 1,482 — — 1,397 1,482 Foreign exchange trading services 875 948 83 61 — — 958 1,009 Securities finance 310 300 19 13 — — 329 313 Software and processing fees (1) 574 573 — — — — 574 573 Other fee revenue 124 46 23 (65) — 147 (19) Total fee revenue 5,593 5,751 1,522 1,491 — — 7,115 7,242 Net interest income 2,069 1,760 12 (7) — — 2,081 1,753 Total other income — (2) — — (294) — (294) (2) Total revenue 7,662 7,509 1,534 1,484 (294) — 8,902 8,993 Provision for credit losses 26 10 — — — — 26 10 Total expenses 5,626 5,452 1,126 1,051 9 42 6,761 6,545 Income before income tax expense $ 2,010 $ 2,047 $ 408 $ 433 $ (303) $ (42) 2,115 $ 2,438 Pre-tax margin 26 % 27 % 27 % 29 % 24 % 27 %

Revenue from Contracts with Cus

Revenue from Contracts with Customers	9 Months Ended
	Sep. 30, 2023
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 177 to 180 in Note 25 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2022 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 September 30, 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 $ 1,234 $ — $ 1,234 $ — $ — $ — $ — $ — $ — $ 1,234 Management fees — — — 479 — 479 — — — 479 Foreign exchange trading services 84 194 278 35 — 35 — — — 313 Securities finance 53 45 98 — 5 5 — — — 103 Software and processing fees 142 46 188 — — — — — — 188 Other fee revenue — 41 41 — 3 3 — — — 44 Total fee revenue 1,513 326 1,839 514 8 522 — — — 2,361 Net interest income — 620 620 — 4 4 — — — 624 Total other income — — — — — — — (294) (294) (294) Total revenue $ 1,513 $ 946 $ 2,459 $ 514 $ 12 $ 526 $ — $ (294) $ (294) $ 2,691 Nine Months Ended September 30, 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 $ 3,710 $ — $ 3,710 $ — $ — $ — $ — $ — $ — $ 3,710 Management fees — — — 1,397 — 1,397 — — — 1,397 Foreign exchange trading services 260 615 875 83 — 83 — — — 958 Securities finance 177 133 310 — 19 19 — — — 329 Software and processing fees 436 138 574 — — — — — — 574 Other fee revenue — 124 124 — 23 23 — — — 147 Total fee revenue 4,583 1,010 5,593 1,480 42 1,522 — — — 7,115 Net interest income — 2,069 2,069 — 12 12 — — — 2,081 Total other income — — — — — — — (294) (294) (294) Total revenue $ 4,583 $ 3,079 $ 7,662 $ 1,480 $ 54 $ 1,534 $ — $ (294) $ (294) $ 8,902 Three Months Ended September 30, 2022 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 2022 Servicing fees $ 1,219 $ — $ 1,219 $ — $ — $ — $ — $ — $ — $ 1,219 Management fees — — — 472 — 472 — — — 472 Foreign exchange trading services 88 205 293 26 — 26 — — — 319 Securities finance 60 45 105 — 5 5 — — — 110 Software and processing fees 138 46 184 — — — — — — 184 Other fee revenue — 12 12 — (17) (17) — — — (5) Total fee revenue 1,505 308 1,813 498 (12) 486 — — — 2,299 Net interest income — 663 663 — (3) (3) — — — 660 Total other income — — — — — — — — — — Total revenue $ 1,505 $ 971 $ 2,476 $ 498 $ (15) $ 483 $ — $ — $ — $ 2,959 Nine Months Ended September 30, 2022 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 2022 Servicing fees $ 3,884 $ — $ 3,884 $ — $ — $ — $ — $ — $ — $ 3,884 Management fees — — — 1,482 — 1,482 — — — 1,482 Foreign exchange trading services 279 669 948 61 — 61 — — — 1,009 Securities finance 175 125 300 — 13 13 — — — 313 Software and processing fees 427 146 573 — — — — — — 573 Other fee revenue — 46 46 — (65) (65) — — — (19) Total fee revenue 4,765 986 5,751 1,543 (52) 1,491 — — — 7,242 Net interest income — 1,760 1,760 — (7) (7) — — — 1,753 Total other income — (2) (2) — — — — — — (2) Total revenue $ 4,765 $ 2,744 $ 7,509 $ 1,543 $ (59) $ 1,484 $ — $ — $ — $ 8,993 Contract balances and contract costs As of September 30, 2023 and December 31, 2022, net receivables of $2.87 billion and $2.63 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 $138 million of deferred revenue as of September 30, 2023 and December 31, 2022, 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 three months ended September 30, 2023, we recognized revenue of $64 million relating to deferred revenue of $150 million as of June 30, 2023. In the nine months ended September 30, 2023, we recognized revenue of $103 million relating to deferred revenue of $138 million as of December 31, 2022. 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 September 30, 2023, total remaining non-cancelable performance obligations for services and products not yet delivered, primarily comprised of software license sales and SaaS, were approximately $1.5 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	9 Months Ended
	Sep. 30, 2023
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 September 30, 2023 2022 (In millions) Non-U.S. (1) U.S. Total Non-U.S. (1) U.S. Total Total revenue $ 1,081 $ 1,610 $ 2,691 $ 1,232 $ 1,727 $ 2,959 Income before income tax expense 130 381 511 333 516 849 Nine Months Ended September 30, 2023 2022 (In millions) Non-U.S. (1) U.S. Total Non-U.S. (1) U.S. Total Total revenue $ 3,777 $ 5,125 $ 8,902 $ 3,912 $ 5,081 $ 8,993 Income before income tax expense 819 1,296 2,115 1,089 1,349 2,438 (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% and 26% of total management fees in the three and nine months ended September 30, 2023, respectively, compared to approximately 25% and 26% in the three and nine months ended September 30, 2022, respectively. Servicing fees generated outside the U.S. were approximately 47% and 46% of total servicing fees in the three and nine months ended September 30, 2023, respectively, compared to approximately 45% and 46% in the three and nine months ended September 30, 2022, respectively. Non-U.S. assets were $80.75 billion and $91.23 billion as of September 30, 2023 and 2022, respectively.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Pay vs Performance Disclosure
Net income	$ 422	$ 763	$ 549	$ 690	$ 747	$ 604	$ 1,734	$ 2,041

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Sep. 30, 2023
Trading Arrangements, by Individual
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false
Kathryn M. Horgan [Member]
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2023
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, 2022 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 September 30, 2023 and December 31, 2022, we held such accounts in Russia, inclusive of $1.4 billion and $767 million, 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 $1.9 billion and $1.3 billion, respectively. Cash and due from banks is evaluated as part of our allowance for credit losses.
Recent Accounting Developments	Recent Accounting Developments In March 2023, the Financial Accounting Standards Board (FASB) issued ASU 2023-02, Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method, which expands the use of the proportional amortization method to other types of tax credit investments, regardless of the tax credit program from which the income tax credits are received. We adopted the new standard in the second quarter of 2023, effective January 1, 2023, for renewable energy production tax credit investments under the modified retrospective approach. The proportional amortization method better reflects the economics of the investments by amortizing the cost of the investments in proportion to the tax benefits received, and simplifies the presentation of the amortization by recognizing it through Income tax expense. The impact of adoption resulted in a decrease in accrued expenses and other liabilities, a decrease in other assets and was not material to retained earnings. Additionally, we continue to evaluate other accounting standards that were recently issued, but not yet adopted as of September 30, 2023; 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

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2023
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 September 30, 2023 (In millions) Quoted Market Pricing Methods Pricing Methods Impact of Netting (1) Total Net Assets: Trading account assets: U.S. government securities $ 35 $ — $ — $ 35 Non-U.S. government securities — 133 — 133 Other — 557 — 557 Total trading account assets 35 690 — 725 Available-for-sale investment securities: U.S. Treasury and federal agencies: Direct obligations 7,627 — — 7,627 Mortgage-backed securities — 9,986 — 9,986 Total U.S. Treasury and federal agencies 7,627 9,986 — 17,613 Non-U.S. debt securities: Mortgage-backed securities — 1,541 — 1,541 Asset-backed securities — 1,890 — 1,890 Non-U.S. sovereign, supranational and non-U.S. agency — 14,666 — 14,666 Other — 2,022 — 2,022 Total non-U.S. debt securities — 20,119 — 20,119 Asset-backed securities: Student loans — 118 — 118 Collateralized loan obligations — 2,640 — 2,640 Non-agency CMBS and RMBS (2) — 264 — 264 Other — 90 — 90 Total asset-backed securities — 3,112 — 3,112 State and political subdivisions — 377 — 377 Other U.S. debt securities — 325 — 325 Total available-for-sale investment securities 7,627 33,919 — 41,546 Other assets: Derivative instruments: Foreign exchange contracts — 20,604 4 $ (12,805) 7,803 Interest rate contracts — 1 — — 1 Total derivative instruments — 20,605 4 (12,805) 7,804 Other 7 687 — — 694 Total assets carried at fair value $ 7,669 $ 55,901 $ 4 $ (12,805) $ 50,769 Liabilities: Accrued expenses and other liabilities: Derivative instruments: Foreign exchange contracts $ 2 $ 20,103 $ 1 $ (15,021) $ 5,085 Interest rate contracts 1 — — — 1 Other derivative contracts — 196 — — 196 Total derivative instruments 3 20,299 1 (15,021) 5,282 Total liabilities carried at fair value $ 3 $ 20,299 $ 1 $ (15,021) $ 5,282 (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 $1.80 billion and $4.02 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, 2022 (In millions) Quoted Market Pricing Methods Pricing Methods Impact of Netting (1) Total Net Assets: Trading account assets: U.S. government securities $ 40 $ — $ — $ 40 Non-U.S. government securities — 142 — 142 Other — 468 — 468 Total trading account assets 40 610 — 650 Available-for-sale investment securities: U.S. Treasury and federal agencies: Direct obligations 7,981 — — 7,981 Mortgage-backed securities — 8,509 — 8,509 Total U.S. Treasury and federal agencies 7,981 8,509 — 16,490 Non-U.S. debt securities: Mortgage-backed securities — 1,623 — 1,623 Asset-backed securities — 1,669 — 1,669 Non-U.S. sovereign, supranational and non-U.S. agency — 14,089 — 14,089 Other — 2,091 — 2,091 Total non-U.S. debt securities — 19,472 — 19,472 Asset-backed securities: Student loans — 115 — 115 Collateralized loan obligations — 2,355 — 2,355 Non-agency CMBS and RMBS (2) — 231 — 231 Other — 88 — 88 Total asset-backed securities — 2,789 — 2,789 State and political subdivisions — 823 — 823 Other U.S. debt securities — 1,005 — 1,005 Total available-for-sale investment securities 7,981 32,598 — 40,579 Other assets: Derivative instruments: Foreign exchange contracts 9 26,173 4 $ (18,522) 7,664 Interest rate contracts — — — — — Total derivative instruments 9 26,173 4 (18,522) 7,664 Other 6 600 — — 606 Total assets carried at fair value $ 8,036 $ 59,981 $ 4 $ (18,522) $ 49,499 Liabilities: Accrued expenses and other liabilities: Trading account liabilities: Derivative instruments: Foreign exchange contracts 2 25,745 2 (17,951) 7,798 Interest rate contracts 1 — — — 1 Other derivative contracts — 216 — — 216 Total derivative instruments 3 25,961 2 (17,951) 8,015 Total liabilities carried at fair value $ 3 $ 25,961 $ 2 $ (17,951) $ 8,015 (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 $3.30 billion and $2.73 billion, respectively, for cash collateral received from and provided to derivative counterparties. (2) Consists entirely of non-agency CMBS.
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation	The following tables present activity related to our level 3 financial assets during the three and nine months ended September 30, 2023 and 2022, respectively. Transfers into and out of level 3 are reported as of the beginning of the period presented. During both the three and nine months ended September 30, 2023 and 2022, there were no transfers into and out of level 3. Fair Value Measurements Using Significant Unobservable Inputs Three Months Ended September 30, 2023 Fair Value as of June 30, 2023 Total Realized and Unrealized Gains (Losses) (1) Purchases Sales Settlements Transfers into Level 3 Transfers out of Level 3 Fair Value as of September 30, 2023 (1) Change in Unrealized Gains (Losses) Related to Financial Instruments (In millions) Recorded in Revenue (1) Recorded in Other Comprehensive Income (1) Assets: Other assets: Derivative instruments: Foreign exchange contracts $ 7 $ — $ — $ 3 $ — $ (6) $ — $ — $ 4 $ — Total derivative instruments 7 — — 3 — (6) — — 4 — Total assets carried at fair value $ 7 $ — $ — $ 3 $ — $ (6) $ — $ — $ 4 $ — (1) Total realized and unrealized gains (losses) on derivative instruments are included within foreign exchange trading services. Fair Value Measurements Using Significant Unobservable Inputs Nine Months Ended September 30, 2023 Fair Value as of December 31, 2022 Total Realized and Unrealized Gains (Losses) (1) Purchases Sales Settlements Transfers into Level 3 Transfers out of Level 3 Fair Value as of September 30, 2023 (1) Change in Unrealized Gains (Losses) Related to Financial Instruments (In millions) Recorded in Revenue (1) Recorded in Other Comprehensive Income (1) Assets: Other assets: Derivative instruments: Foreign exchange contracts $ 4 $ (1) $ — $ 4 $ — $ (3) $ — $ — $ 4 $ — Total derivative instruments 4 (1) — 4 — (3) — — 4 — Total assets carried at fair value $ 4 $ (1) $ — $ 4 $ — $ (3) $ — $ — $ 4 $ — (1) Total realized and unrealized gains (losses) on derivative instruments are included within foreign exchange trading services. Fair Value Measurements Using Significant Unobservable Inputs Three Months Ended September 30, 2022 Fair Value as of June 30, 2022 Total Realized and Unrealized Gains (Losses) (1) Purchases Sales Settlements Transfers Transfers Fair Value as of September 30, 2022 (1) Change in Unrealized Gains (Losses) Related to Financial Instruments (In millions) Recorded (1) Recorded (1) Assets: Other assets: Derivative instruments: Foreign exchange contracts $ 15 $ 7 $ — $ 5 $ — $ (12) $ — $ — $ 15 $ 8 Total derivative instruments 15 7 — 5 — (12) — — 15 8 Total assets carried at fair value $ 15 $ 7 $ — $ 5 $ — $ (12) $ — $ — $ 15 $ 8 ( 1) Total realized and unrealized gains (losses) on AFS investment securities are included within gains (losses) related to investment securities, net. Total realized and unrealized gains (losses) on derivative instruments are included within foreign exchange trading services. Fair Value Measurements Using Significant Unobservable Inputs Nine Months Ended September 30, 2022 Fair Value Total Realized and Unrealized Gains (Losses) (1) Purchases Sales Settlements Transfers Transfers Fair Value as of September 30, 2022 (1) Change in Unrealized Gains (Losses) Related to Financial Instruments (In millions) Recorded (1) Recorded (1) Assets: Other assets: Derivative instruments: Foreign exchange contracts $ — $ 6 $ — $ 9 $ — $ — $ — $ — $ 15 $ 6 Total derivative instruments — 6 — 9 — — — — 15 6 Total assets carried at fair value $ — $ 6 $ — $ 9 $ — $ — $ — $ — $ 15 $ 6 ( 1) Total realized and unrealized gains (losses) on AFS investment securities are included within gains (losses) related to investment securities, net. Total realized and unrealized gains (losses) on derivative instruments are included within foreign exchange trading services.
Fair Value Inputs, Quantitative Information	The following table presents quantitative information, as of the dates indicated, about the valuation techniques and significant unobservable inputs used in the valuation of our level 3 financial assets and liabilities measured at fair value on a recurring basis for which we use internally-developed pricing models. The significant unobservable inputs for our level 3 financial assets and liabilities whose fair value is measured using pricing information from non-binding broker/dealer quotes are not included in the table, as the specific inputs applied are not provided by the broker/dealer. Quantitative Information about Level 3 Fair Value Measurements Fair Value Range Weighted-Average (Dollars in millions) As of September 30, 2023 As of December 31, 2022 Valuation Technique Significant Unobservable Input (1) As of September 30, 2023 As of September 30, 2023 As of December 31, 2022 Significant unobservable inputs readily available to State Street: Assets: Derivative Instruments, foreign exchange contracts $ 4 $ 4 Option model Volatility 5.7 % - 13.5% 8.6 % 11.4 % Total $ 4 $ 4 Liabilities: Derivative instruments, foreign exchange contracts $ 1 $ 2 Option model Volatility 6.5 % - 14.7% 8.3 % 9.8 % Total $ 1 $ 2 (1) Significant changes in these unobservable inputs may result in significant changes in fair value measurement of the derivative instrument.
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) September 30, 2023 Financial Assets: Cash and due from banks $ 4,009 4,009 $ 4,009 $ — $ — Interest-bearing deposits with banks 76,756 76,756 — 76,756 — Securities purchased under resale agreements 1,816 1,816 — 1,816 — Investment securities held-to-maturity 61,956 54,121 11,457 42,664 — Net loans (1) 35,317 35,103 — 33,055 2,048 Other (2) 6,869 6,869 — 6,869 — Financial Liabilities: Deposits: Non-interest-bearing $ 35,824 $ 35,824 $ — $ 35,824 $ — Interest-bearing - U.S. 118,561 118,561 — 118,561 — Interest-bearing - non-U.S. 58,616 58,616 — 58,616 — Securities sold under repurchase agreements 3,097 3,097 — 3,097 — Other short-term borrowings 8 8 — 8 — Long-term debt 18,564 17,661 — 17,523 138 Other (2) 6,869 6,869 — 6,869 — (1) Includes $7 million of loans classified as held-for-sale that were measured at fair value in level 2 as of September 30, 2023. (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, 2022 Financial Assets: Cash and due from banks $ 3,970 $ 3,970 $ 3,970 $ — $ — Interest-bearing deposits with banks 101,593 101,593 — 101,593 — Securities purchased under resale agreements 5,215 5,215 — 5,215 — Investment securities held-to-maturity 64,700 57,913 11,336 46,577 — Net loans (1) 32,053 31,794 — 29,679 2,115 Other (2) 3,626 3,626 — 3,626 — Financial Liabilities: Deposits: Non-interest-bearing $ 46,755 $ 46,755 $ — $ 46,755 $ — Interest-bearing - U.S. 111,384 111,384 — 111,384 — Interest-bearing - non-U.S. 77,325 77,325 — 77,325 — Securities sold under repurchase agreements 1,177 1,177 — 1,177 — Other short-term borrowings 2,097 2,097 — 2,097 — Long-term debt 14,996 14,273 — 14,102 171 Other (2) 3,626 3,626 — 3,626 — (1) Includes $5 million of loans classified as held-for-sale that were measured at fair value in level 2 as of December 31, 2022. (2) 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)	9 Months Ended
	Sep. 30, 2023
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: September 30, 2023 December 31, 2022 Amortized Cost Gross Unrealized Fair Value Amortized Cost Gross Unrealized Fair Value (In millions) Gains Losses Gains Losses Available-for-sale: U.S. Treasury and federal agencies: Direct obligations $ 7,812 $ 12 $ 197 $ 7,627 $ 8,232 $ 10 $ 261 $ 7,981 Mortgage-backed securities (1) 10,266 — 280 9,986 8,767 2 260 8,509 Total U.S. Treasury and federal agencies 18,078 12 477 17,613 16,999 12 521 16,490 Non-U.S. debt securities: Mortgage-backed securities 1,551 1 11 1,541 1,642 — 19 1,623 Asset-backed securities (2) 1,903 1 14 1,890 1,696 — 27 1,669 Non-U.S. sovereign, supranational and non-U.S. agency 14,910 2 246 14,666 14,512 1 424 14,089 Other (3) 2,085 1 64 2,022 2,255 — 164 2,091 Total non-U.S. debt securities 20,449 5 335 20,119 20,105 1 634 19,472 Asset-backed securities: Student loans (4) 118 — — 118 116 — 1 115 Collateralized loan obligations (5) 2,649 2 11 2,640 2,394 — 39 2,355 Non-agency CMBS and RMBS (6) 268 — 4 264 237 — 6 231 Other 90 — — 90 90 — 2 88 Total asset-backed securities 3,125 2 15 3,112 2,837 — 48 2,789 State and political subdivisions 387 — 10 377 839 1 17 823 Other U.S. debt securities (7) 338 — 13 325 1,078 — 73 1,005 Total available-for-sale securities (8)(9) $ 42,377 $ 19 $ 850 $ 41,546 $ 41,858 $ 14 $ 1,293 $ 40,579 Held-to-maturity: U.S. Treasury and federal agencies: Direct obligations $ 11,758 $ — $ 289 $ 11,469 $ 11,693 $ — $ 341 $ 11,352 Mortgage-backed securities (10) 40,297 — 7,232 33,065 42,307 3 6,030 36,280 Total U.S. Treasury and federal agencies 52,055 — 7,521 44,534 54,000 3 6,371 47,632 Non-U.S. debt securities: Non-U.S. sovereign, supranational and non-U.S. agency 6,452 — 262 6,190 6,603 — 304 6,299 Total non-U.S. debt securities 6,452 — 262 6,190 6,603 — 304 6,299 Asset-backed securities: Student loans (4) 3,442 3 73 3,372 3,955 1 134 3,822 Non-agency CMBS and RMBS (11) 7 18 — 25 142 18 — 160 Total asset-backed securities 3,449 21 73 3,397 4,097 19 134 3,982 Total held-to-maturity securities (8)(12) $ 61,956 $ 21 $ 7,856 $ 54,121 $ 64,700 $ 22 $ 6,809 $ 57,913 (1) As of September 30, 2023 and December 31, 2022, the total fair value included $5.63 billion and $6.78 billion, respectively, of agency CMBS and $4.36 billion and $1.73 billion, respectively, of agency MBS. (2) As of September 30, 2023 and December 31, 2022, the fair value includes non-U.S. collateralized loan obligations of $0.97 billion and $0.86 billion, respectively. (3) As of September 30, 2023 and December 31, 2022, the fair value includes non-U.S. corporate bonds of $1.67 billion and $1.14 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 September 30, 2023 and December 31, 2022. (7) As of September 30, 2023 and December 31, 2022, the fair value of U.S. corporate bonds was $0.33 billion and $1.01 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 period ended September 30, 2023. (9) As of September 30, 2023, we had no allowance for credit losses on AFS investment securities. As of December 31, 2022, we had an allowance for credit losses on AFS investment securities of $2 million. (10) As of September 30, 2023 and December 31, 2022, the total amortized cost included $5.24 billion and $4.99 billion of agency CMBS, respectively. (11) As of September 30, 2023, the total amortized cost included $7 million of non-agency RMBS. As of December 31, 2022, the total amortized cost included $133 million of non-agency CMBS and $9 million of non-agency RMBS.
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: September 30, 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 $ 1,310 $ 27 $ 5,276 $ 170 $ 6,586 $ 197 Mortgage-backed securities 3,202 85 6,717 195 9,919 280 Total U.S. Treasury and federal agencies 4,512 112 11,993 365 16,505 477 Non-U.S. debt securities: Mortgage-backed securities 214 1 823 10 1,037 11 Asset-backed securities 225 — 1,124 14 1,349 14 Non-U.S. sovereign, supranational and non-U.S. agency 6,715 72 7,077 174 13,792 246 Other 855 10 902 54 1,757 64 Total non-U.S. debt securities 8,009 83 9,926 252 17,935 335 Asset-backed securities: Student loans 68 — — — 68 — Collateralized loan obligations 328 — 1,860 11 2,188 11 Non-agency CMBS and RMBS 39 1 180 3 219 4 Total asset-backed securities 435 1 2,040 14 2,475 15 State and political subdivisions 244 7 133 3 377 10 Other U.S. debt securities 3 — 323 13 326 13 Total $ 13,203 $ 203 $ 24,415 $ 647 $ 37,618 $ 850 December 31, 2022 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 $ 1,337 $ 15 $ 5,745 $ 246 $ 7,082 $ 261 Mortgage-backed securities 5,524 130 2,815 130 8,339 260 Total U.S. Treasury and federal agencies 6,861 145 8,560 376 15,421 521 Non-U.S. debt securities: Mortgage-backed securities 1,278 15 272 4 1,550 19 Asset-backed securities 859 11 765 16 1,624 27 Non-U.S. sovereign, supranational and non-U.S. agency 6,750 108 5,800 316 12,550 424 Other 771 27 1,233 137 2,004 164 Total non-U.S. debt securities 9,658 161 8,070 473 17,728 634 Asset-backed securities: Student loans 89 1 — — 89 1 Collateralized loan obligations 1,577 27 710 12 2,287 39 Non-agency CMBS and RMBS 193 6 3 — 196 6 Other 88 2 — — 88 2 Total asset-backed securities 1,947 36 713 12 2,660 48 State and political subdivisions 669 12 42 5 711 17 Other U.S. debt securities 294 15 708 58 1,002 73 Total $ 19,429 $ 369 $ 18,093 $ 924 $ 37,522 $ 1,293
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 September 30, 2023. 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. September 30, 2023 (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 $ 291 $ 291 $ 6,920 $ 6,730 $ 601 $ 606 $ — $ — $ 7,812 $ 7,627 Mortgage-backed securities 41 41 1,309 1,291 4,398 4,307 4,518 4,347 10,266 9,986 Total U.S. Treasury and federal agencies 332 332 8,229 8,021 4,999 4,913 4,518 4,347 18,078 17,613 Non-U.S. debt securities: Mortgage-backed securities 142 142 243 242 — — 1,166 1,157 1,551 1,541 Asset-backed securities 319 315 419 415 554 551 611 609 1,903 1,890 Non-U.S. sovereign, supranational and non-U.S. agency 5,627 5,591 6,483 6,304 2,800 2,771 — — 14,910 14,666 Other 341 335 1,570 1,515 174 172 — — 2,085 2,022 Total non-U.S. debt securities 6,429 6,383 8,715 8,476 3,528 3,494 1,777 1,766 20,449 20,119 Asset-backed securities: Student loans 33 33 — — — — 85 85 118 118 Collateralized loan obligations 122 122 345 343 1,489 1,482 693 693 2,649 2,640 Non-agency CMBS and RMBS — — 20 19 — — 248 245 268 264 Other — — 90 90 — — — — 90 90 Total asset-backed securities 155 155 455 452 1,489 1,482 1,026 1,023 3,125 3,112 State and political subdivisions 125 122 100 98 162 157 — — 387 377 Other U.S. debt securities 258 252 80 73 — — — — 338 325 Total $ 7,299 $ 7,244 $ 17,579 $ 17,120 $ 10,178 $ 10,046 $ 7,321 $ 7,136 $ 42,377 $ 41,546 Held-to-maturity: U.S. Treasury and federal agencies: Direct obligations $ 6,284 $ 6,230 $ 5,439 $ 5,206 $ 24 $ 22 $ 11 $ 11 $ 11,758 $ 11,469 Mortgage-backed securities 132 115 594 547 4,523 3,653 35,048 28,750 40,297 33,065 Total U.S. Treasury and federal agencies 6,416 6,345 6,033 5,753 4,547 3,675 35,059 28,761 52,055 44,534 Non-U.S. debt securities: Non-U.S. sovereign, supranational and non-U.S. agency 2,261 2,231 3,690 3,504 501 455 — — 6,452 6,190 Total non-U.S. debt securities 2,261 2,231 3,690 3,504 501 455 — — 6,452 6,190 Asset-backed securities: Student loans 237 231 232 231 622 612 2,351 2,298 3,442 3,372 Non-agency CMBS and RMBS 1 8 — — — — 6 17 7 25 Total asset-backed securities 238 239 232 231 622 612 2,357 2,315 3,449 3,397 Total $ 8,915 $ 8,815 $ 9,955 $ 9,488 $ 5,670 $ 4,742 $ 37,416 $ 31,076 $ 61,956 $ 54,121

Loans and Allowance for Credi_2

Loans and Allowance for Credit Losses (Tables)	9 Months Ended
	Sep. 30, 2023
Receivables [Abstract]
Net Loans	The following table presents our recorded investment in loans, by segment, as of the dates indicated: (In millions) September 30, 2023 December 31, 2022 Domestic (1) : Commercial and financial: Fund Finance (2) $ 12,732 $ 12,154 Leveraged loans 2,336 2,431 Overdrafts 1,017 1,707 Collateralized loan obligations in loan form 100 100 Other (3) 2,207 1,871 Commercial real estate 3,117 2,985 Total domestic $ 21,509 $ 21,248 Foreign (1) : Commercial and financial: Fund Finance (2) $ 4,809 $ 3,949 Leveraged loans 1,096 1,118 Overdrafts 2,576 1,094 Collateralized loan obligations in loan form 5,446 4,741 Total foreign 13,927 10,902 Total loans (4) 35,436 32,150 Allowance for credit losses (119) (97) Loans, net of allowance $ 35,317 $ 32,053 (1) Domestic and foreign categorization is based on the borrower’s country of domicile. (2) Fund finance loans include primarily $9.33 billion private equity capital call finance loans, $5.97 billion loans to real money funds and $1.19 billion loans to business development companies as of September 30, 2023, compared to $7.57 billion private equity capital call finance loans, $6.61 billion loans to real money funds and $1.11 billion loans to business development companies as of December 31, 2022. (3) Includes $1.93 billion securities finance loans, $276 million loans to municipalities and $6 million other loans as of September 30, 2023 and $1.51 billion securities finance loans, $321 million loans to municipalities and $42 million other loans as of December 31, 2022. (4) As of September 30, 2023, excluding overdrafts, floating rate loans totaled $28.85 billion and fixed rate loans totaled $2.99 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 2022 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: September 30, 2023 Commercial and Financial Commercial Real Estate Total Loans (In millions) Investment grade $ 28,160 $ 2,435 $ 30,595 Speculative 3,816 536 4,352 Special mention 268 99 367 Substandard 39 — 39 Doubtful 29 47 76 Total (1)(2) $ 32,312 $ 3,117 $ 35,429 December 31, 2022 Commercial and Financial Commercial Real Estate Total Loans (In millions) Investment grade $ 24,667 $ 2,509 $ 27,176 Speculative 4,103 388 4,491 Special mention 291 88 379 Substandard 99 — 99 Total (1)(2) $ 29,160 $ 2,985 $ 32,145 (1) Loans include $3.59 billion and $2.80 billion of overdrafts as of September 30, 2023 and December 31, 2022, respectively. Overdrafts are short-term in nature and do not present a significant credit risk to us. As of September 30, 2023, $3.21 billion overdrafts were investment grade and $0.38 billion overdrafts were speculative. (2) Total does not include $7 million and $5 million of loans classified as held-for-sale as of September 30, 2023 and December 31, 2022, respectively. The following table presents the amortized cost basis, by year of origination and credit quality indicator, as of September 30, 2023. 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) 2023 2022 2021 2020 2019 Prior Revolving Loans Total (1) Domestic loans: Commercial and financial: Risk Rating: Investment grade $ 1,095 $ 100 $ 204 $ 61 $ 272 $ 6 $ 13,930 $ 15,668 Speculative 458 264 749 113 334 185 347 2,450 Special mention — — 155 — 57 — — 212 Substandard 20 — — 5 — — — 25 Doubtful 5 — 24 — — — — 29 Total commercial and financing $ 1,578 $ 364 $ 1,132 $ 179 $ 663 $ 191 $ 14,277 $ 18,384 Commercial real estate: Risk Rating: Investment grade $ 215 $ 500 $ 498 $ 100 $ 375 $ 747 $ — $ 2,435 Speculative — 20 31 50 144 291 — 536 Special mention — — — — 22 77 — 99 Doubtful — — — — — 47 — 47 Total commercial real estate $ 215 $ 520 $ 529 $ 150 $ 541 $ 1,162 $ — $ 3,117 Non-U.S. loans: Commercial and financial: Risk Rating: Investment grade $ 3,031 $ 1,982 $ 2,793 $ — $ — $ — $ 4,686 $ 12,492 Speculative 483 131 502 75 104 71 — 1,366 Special mention — — 28 28 — — — 56 Substandard — — — — — 14 — $ 14 Total commercial and financing $ 3,514 $ 2,113 $ 3,323 $ 103 $ 104 $ 85 $ 4,686 $ 13,928 Total loans (2) $ 5,307 $ 2,997 $ 4,984 $ 432 $ 1,308 $ 1,438 $ 18,963 $ 35,429 (1) Any reserve associated with accrued interest is not material. As of September 30, 2023, accrued interest receivable of $325 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 $7 million of loans classified as held-for-sale as of September 30, 2023. The following table presents the amortized cost basis, by year of origination and credit quality indicator as of December 31, 2022: (In millions) 2022 2021 2020 2019 2018 Prior Revolving Loans Total (1) Domestic loans: Commercial and financial: Risk Rating: Investment grade $ 1,577 $ 185 $ 72 $ 300 $ — $ 9 $ 12,843 $ 14,986 Speculative 523 859 168 461 236 151 545 2,943 Special mention — 120 — 105 19 — — 244 Substandard — — 5 42 31 7 — 85 Total commercial and financing $ 2,100 $ 1,164 $ 245 $ 908 $ 286 $ 167 $ 13,388 $ 18,258 Commercial real estate: Risk Rating: Investment grade $ 519 $ 612 $ 100 $ 330 $ 511 $ 436 $ — $ 2,508 Speculative — — 49 163 111 65 — 388 Special mention — — — 49 40 — — 89 Total commercial real estate $ 519 $ 612 $ 149 $ 542 $ 662 $ 501 $ — $ 2,985 Non-U.S. loans: Commercial and financial: Risk Rating: Investment grade $ 2,986 $ 2,799 $ — $ — $ — $ — $ 3,897 $ 9,682 Speculative 234 529 100 181 107 — 9 1,160 Special mention — — 18 5 23 — — 46 Substandard — — — — 14 — — 14 Total commercial and financing $ 3,220 $ 3,328 $ 118 $ 186 $ 144 $ — $ 3,906 $ 10,902 Total loans (2) $ 5,839 $ 5,104 $ 512 $ 1,636 $ 1,092 $ 668 $ 17,294 $ 32,145 (1) Any reserve associated with accrued interest is not material. As of December 31, 2022, accrued interest receivable of $200 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 $5 million of loans classified as held-for-sale as of December 31, 2022.
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 September 30, 2023 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 $ 80 $ 3 $ 37 $ — $ — $ 15 $ 1 $ 136 Charge-offs (2) — — — — — — (2) Provision (6) — 7 — 1 (1) (1) — Ending balance $ 72 $ 3 $ 44 $ — $ 1 $ 14 $ — $ 134 (1) Includes $2 million allowance for credit losses on Fund Finance loans and $1 million on other loans. Nine Months Ended September 30, 2023 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 $ 73 $ 5 $ 19 $ 2 $ — $ 23 $ (1) $ 121 Charge-offs (13) — — — — — — (13) Provision 12 (2) 25 (2) 1 (9) 1 26 Ending balance $ 72 $ 3 $ 44 $ — $ 1 $ 14 $ — $ 134 (1) Includes $2 million allowance for credit losses on Fund Finance loans and $1 million on other loans. Three Months Ended September 30, 2022 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 $ 69 $ 10 $ 16 $ 2 $ 17 $ — $ 114 Charge-offs — — — — — — — Provision 6 (5) 2 (1) (2) — — Ending balance $ 75 $ 5 $ 18 $ 1 $ 15 $ — $ 114 (1) Includes $4 million allowance for credit losses on Fund Finance loans and $1 million on other loans. Nine Months Ended September 30, 2022 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 $ 61 $ 12 $ 14 $ 2 $ 19 $ — $ 108 Charge-offs (4) — — — — — (4) Provision 18 (7) 4 (1) (4) — 10 Ending balance $ 75 $ 5 $ 18 $ 1 $ 15 $ — $ 114 (1) Includes $4 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)	9 Months Ended
	Sep. 30, 2023
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, 2021 $ 7,354 $ 267 $ 7,621 Acquisitions 3 — 3 Foreign currency translation (125) (4) (129) Ending balance December 31, 2022 $ 7,232 $ 263 $ 7,495 Foreign currency translation (8) — (8) Ending balance September 30, 2023 $ 7,224 $ 263 $ 7,487
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, 2021 $ 1,746 $ 70 $ 1,816 Amortization (217) (21) (238) Foreign currency translation (34) — (34) Ending balance December 31, 2022 1,495 49 1,544 Amortization (164) (16) (180) Foreign currency translation (1) — (1) Ending balance September 30, 2023 $ 1,330 $ 33 $ 1,363
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: September 30, 2023 Gross Accumulated Net (In millions) Other intangible assets: Client relationships $ 2,722 $ (1,743) $ 979 Technology 401 (206) 195 Core deposits 681 (501) 180 Other 83 (74) 9 Total $ 3,887 $ (2,524) $ 1,363 December 31, 2022 Gross Accumulated Net (In millions) Other intangible assets: Client relationships $ 2,728 $ (1,626) $ 1,102 Technology 402 (178) 224 Core deposits 683 (477) 206 Other 84 (72) 12 Total $ 3,897 $ (2,353) $ 1,544

Other Assets (Tables)

Other Assets (Tables)	9 Months Ended
	Sep. 30, 2023
Other Assets [Abstract]
Components of Other Assets	The following table presents the components of other assets as of the dates indicated: (In millions) September 30, 2023 December 31, 2022 Securities borrowed (1) $ 24,065 $ 16,489 Derivative instruments, net 7,804 7,664 Bank-owned life insurance 3,730 3,649 Collateral, net 3,104 1,833 Investments in joint ventures and other unconsolidated entities (2) 2,840 3,245 Deferred tax assets, net of valuation allowance (3) 1,020 1,127 Right-of-use assets 823 500 Receivable for securities settlement 670 383 Prepaid expenses 610 558 Accounts receivable 472 404 Income taxes receivable 238 235 Deposits with clearing organizations 58 62 Other (4) 1,798 1,753 Total $ 47,232 $ 37,902 (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 $181 million and $179 million as of September 30, 2023 and December 31, 2022, respectively. For both the three and nine months ended September 30, 2023, $5 million of 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

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2023
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) September 30, 2023 December 31, 2022 Derivatives not designated as hedging instruments: Interest rate contracts: Futures $ 15,704 $ 8,683 Foreign exchange contracts: Forward, swap and spot 2,379,456 2,267,221 Options purchased 683 607 Options written 278 445 Futures 148 1,550 Other: Futures 130 — Stable value contracts (1) 29,490 31,391 Deferred value awards (2) 320 300 Derivatives designated as hedging instruments: Interest rate contracts: Swap agreements 20,453 22,566 Foreign exchange contracts: Forward and swap 9,279 8,213 (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 158 in Note 10 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2022 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) September 30, 2023 December 31, 2022 September 30, 2023 December 31, 2022 Derivatives not designated as hedging instruments: Foreign exchange contracts $ 20,090 $ 26,081 $ 20,103 $ 25,407 Other derivative contracts — — 196 216 Total $ 20,090 $ 26,081 $ 20,299 $ 25,623 Derivatives designated as hedging instruments: Foreign exchange contracts $ 518 $ 105 $ 3 $ 342 Interest rate contracts 1 — 1 1 Total $ 519 $ 105 $ 4 $ 343 (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) September 30, 2023 December 31, 2022 September 30, 2023 December 31, 2022 Derivatives not designated as hedging instruments: Foreign exchange contracts $ 20,090 $ 26,081 $ 20,103 $ 25,407 Other derivative contracts — — 196 216 Total $ 20,090 $ 26,081 $ 20,299 $ 25,623 Derivatives designated as hedging instruments: Foreign exchange contracts $ 518 $ 105 $ 3 $ 342 Interest rate contracts 1 — 1 1 Total $ 519 $ 105 $ 4 $ 343 (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 September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (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 $ 198 $ 207 $ 621 $ 676 Foreign exchange contracts Interest expense (24) (16) (40) — Interest rate contracts Foreign exchange trading services revenue (3) — (2) — Other derivative contracts Other fee revenue 6 — 5 — Other derivative contracts Compensation and employee benefits (21) (11) (99) (75) Total $ 156 $ 180 $ 485 $ 601 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 September 30, Three Months Ended September 30, 2023 2022 2023 2022 (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 $ 57 $ 349 Available-for-sale securities (1) Net interest income $ (57) $ (349) Interest rate contracts Net interest income (76) (261) Long-term debt Net interest income 76 261 Total $ (19) $ 88 $ 19 $ (88) Nine Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (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 $ 99 707 Available-for-sale securities (2) Net interest income $ (100) $ (709) Interest rate contracts Net interest income (52) (600) Long-term debt Net interest income 52 600 Total $ 47 $ 107 $ (48) $ (109) (1) In the three months ended September 30, 2023, approximately $36 million of net unrealized gains on AFS investment securities designated in fair value hedges were recognized in OCI compared to $256 million of net unrealized gains in the same period of 2022. (2) In the nine months ended September 30, 2023, approximately $70 million of net unrealized gains on AFS investment securities designated in fair value hedges were recognized in OCI compared to $526 million of net unrealized gains in the same period of 2022. Three Months Ended September 30, Three Months Ended September 30, 2023 2022 Location of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income 2023 2022 (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) $ (1) $ (222) Net interest income $ (53) $ (22) Foreign exchange contracts 33 39 Net interest income — — Total derivatives designated as cash flow hedges $ 32 $ (183) $ (53) $ (22) Derivatives designated as net investment hedges: Foreign exchange contracts $ 225 $ 395 $ — $ — Total derivatives designated as net investment hedges 225 395 — — Total $ 257 $ 212 $ (53) $ (22) Nine Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 (In millions) Amount of Gain or (Loss) Recognized in Other Comprehensive Income on Derivative Location of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income Derivatives designated as cash flow hedges: Interest rate contracts $ (4) $ (604) Net interest income $ (156) $ 3 Foreign exchange contracts 115 215 Net interest income 1 6 Total derivatives designated as cash flow hedges $ 111 $ (389) $ (155) $ 9 Derivatives designated as net investment hedges: Foreign exchange contracts $ 176 $ 723 $ — $ — Total derivatives designated as net investment hedges 176 723 — — Total $ 287 $ 334 $ (155) $ 9 (1) As of September 30, 2023, 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: September 30, 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 $ 13,960 $ (594) $ 176 Available-for-sale securities (2)(3) 9,957 (767) 4 December 31, 2022 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 $ 12,513 $ (644) $ 362 Available-for-sale securities (2)(3) 9,801 (675) 8 (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 September 30, 2023 and December 31, 2022, the amortized cost of the closed portfolios used in these hedging relationships was $699 million and $207 million, respectively, of which $400 million and $64 million, respectively, was designated under the portfolio layer hedging relationship. At September 30, 2023 and December 31, 2022, the cumulative adjustment associated with these hedging relationships was ($16) million and ($4) million, respectively. (3) Carrying amount represents amortized cost.

Offsetting Arrangements (Tables

Offsetting Arrangements (Tables)	9 Months Ended
	Sep. 30, 2023
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: September 30, 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 $ 20,608 $ (11,006) $ 9,602 $ — $ 9,602 Interest rate contracts (6) 1 — 1 — 1 Cash collateral and securities netting NA (1,799) (1,799) (820) (2,619) Total derivatives 20,609 (12,805) 7,804 (820) 6,984 Other financial instruments: Resale agreements and securities borrowing (7)(8) 213,229 (187,348) 25,881 (24,436) 1,445 Total derivatives and other financial instruments $ 233,838 $ (200,153) $ 33,685 $ (25,256) $ 8,429 Assets: December 31, 2022 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 $ 26,186 $ (15,224) $ 10,962 $ — $ 10,962 Interest rate contracts (6) — — — — — Cash collateral and securities netting NA (3,298) (3,298) (1,717) (5,015) Total derivatives 26,186 (18,522) 7,664 (1,717) 5,947 Other financial instruments: Resale agreements and securities borrowing (7)(8) 125,797 (104,093) 21,704 (20,960) 744 Total derivatives and other financial instruments $ 151,983 $ (122,615) $ 29,368 $ (22,677) $ 6,691 (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 $25.88 billion as of September 30, 2023 were $1.82 billion of resale agreements and $24.06 billion of collateral provided related to securities borrowing. Included in the $21.70 billion as of December 31, 2022 were $5.21 billion of resale agreements and $16.49 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: September 30, 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 $ 20,106 $ (11,006) $ 9,100 $ — $ 9,100 Interest rate contracts (6) 1 — 1 — 1 Other derivative contracts 196 — 196 — 196 Cash collateral and securities netting NA (4,015) (4,015) (1,081) (5,096) Total derivatives 20,303 (15,021) 5,282 (1,081) 4,201 Other financial instruments: Repurchase agreements and securities lending (7)(8) 203,469 (187,348) 16,121 (15,790) 331 Total derivatives and other financial instruments $ 223,772 $ (202,369) $ 21,403 $ (16,871) $ 4,532 Liabilities: December 31, 2022 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 $ 25,749 $ (15,224) $ 10,525 $ — $ 10,525 Interest rate contracts (6) 1 — 1 — 1 Other derivative contracts 216 — 216 — 216 Cash collateral and securities netting NA (2,727) (2,727) (908) (3,635) Total derivatives 25,966 (17,951) 8,015 (908) 7,107 Other financial instruments: Repurchase agreements and securities lending (7)(8) 111,653 (104,093) 7,560 (6,433) 1,127 Total derivatives and other financial instruments $ 137,619 $ (122,044) $ 15,575 $ (7,341) $ 8,234 (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 $16.12 billion as of September 30, 2023 were $3.10 billion of repurchase agreements and $13.02 billion of collateral received related to securities lending transactions. Included in the $7.56 billion as of December 31, 2022 were $1.18 billion of repurchase agreements and $6.38 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 September 30, 2023 As of December 31, 2022 (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 $ 186,824 $ — $ 178 $ — $ 187,002 $ 100,899 $ — $ 200 $ — $ 101,099 Non-U.S. sovereign debt — — — — — 702 — — — 702 Total 186,824 — 178 — 187,002 101,601 — 200 — 101,801 Securities lending transactions: US Treasury and agency securities 8 — — — 8 44 — — — 44 Corporate debt securities 144 — 12 — 156 67 — — — 67 Equity securities 7,503 15 20 1,896 9,434 4,509 — — 1,606 6,115 Other (1) 6,869 — — — 6,869 3,626 — — — 3,626 Total 14,524 15 32 1,896 16,467 8,246 — — 1,606 9,852 Gross amount of recognized liabilities for repurchase agreements and securities lending $ 201,348 $ 15 $ 210 $ 1,896 $ 203,469 $ 109,847 $ — $ 200 $ 1,606 $ 111,653 (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)	9 Months Ended
	Sep. 30, 2023
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) September 30, 2023 December 31, 2022 Commitments: Unfunded credit facilities $ 34,149 $ 31,208 Guarantees (1) : Indemnified securities financing $ 269,180 $ 348,924 Standby letters of credit 1,527 2,125 (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) September 30, 2023 December 31, 2022 Fair value of indemnified securities financing $ 269,180 $ 348,924 Fair value of cash and securities held by us, as agent, as collateral for indemnified securities financing 281,856 366,895 Fair value of collateral for indemnified securities financing invested in indemnified repurchase agreements 58,722 54,114 Fair value of cash and securities held by us or our agents as collateral for investments in indemnified repurchase agreements 63,263 57,903

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	9 Months Ended
	Sep. 30, 2023
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 September 30, 2023 Nine Months Ended September 30, 2023 Income (loss) recorded on investments within other fee revenue $ 8 $ 23 Income recorded in total revenue 8 23 Tax credits and benefits recognized in income tax expense 68 202 Proportional amortization recognized in income tax expense (52) (156) Net benefits included in income tax expense 16 46 Net benefit attributable to tax-advantaged investments included in the consolidated statement of income $ 24 $ 69

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2023
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 September 30, 2023: 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 September 30, 2023 Redemption Date (2) Series D February 2014 30,000,000 $ 750 1/4,000th $ 100,000 $ 25 5.9% to but excluding March 15, 2024, then 9.008% (3) Quarterly $ 742 March 15, 2024 Series F (4) May 2015 250,000 250 1/100th 100,000 1,000 Floating rate equal to the three-month CME term SOFR plus 3.859%, or 9.268% effective September 15, 2023 Quarterly 247 September 15, 2020 Series G April 2016 20,000,000 500 1/4,000th 100,000 25 5.35% (5) Quarterly 493 March 15, 2026 Series H September 2018 500,000 500 1/100th 100,000 1,000 5.625% to but excluding December 15, 2023, then a floating rate equal to the three-month CME term SOFR plus 2.801% (6) Semi-annually 494 December 15, 2023 (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 D preferred stock that begins on March 15, 2024 and all subsequent floating rate periods will transition to a new, fixed rate in accordance with the LIBOR Act and the contractual terms of the Series D preferred stock. (4) Series F preferred stock is redeemable on September 15, 2020 and on each succeeding dividend payment date. (5) 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. (6) In accordance with the LIBOR Act, the benchmark interest rate to be used to calculate the dividend rate during the floating rate period of the Series H preferred stock that begins on December 15, 2023 will transition from USD LIBOR to CME Term SOFR, plus 0.26161%.
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 September 30, 2023 2022 (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 2,338 23.38 6 1,387 13.87 3 Series G 1,338 0.33 7 1,338 0.33 7 Total $ 24 $ 21 Nine Months Ended September 30, 2023 2022 (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 $ 4,425 $ 1.11 $ 33 $ 4,425 $ 1.11 $ 33 Series F 6,592 65.92 17 3,467 34.67 9 Series G 4,013 1.00 20 4,014 0.99 20 Series H 2,813 28.13 14 2,813 28.13 14 Total $ 84 $ 76 Three Months Ended September 30, 2023 2022 Dividends Declared per Share Total (In millions) Dividends Declared per Share Total (In millions) Common Stock $ 0.69 $ 213 $ 0.63 $ 232 Nine Months Ended September 30, 2023 2022 Dividends Declared per Share Total (In millions) Dividends Declared per Share Total (In millions) Common Stock $ 1.95 $ 628 $ 1.77 $ 651
Stock Repurchase Program	The table below presents the activity under our common share repurchase program for the period indicated: Three Months Ended September 30, 2023 Nine Months Ended September 30, 2023 Shares Acquired Average Cost per Share Total Acquired Shares Acquired (In millions) Average Cost per Share Total Acquired (In millions) 2023 Program 13.8 $ 72.23 $ 1,000 42.3 $ 78.08 $ 3,300
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 83 49 — (145) 176 163 Increase (decrease) due to amounts reclassified from accumulated other comprehensive income 113 378 12 — — 503 Other comprehensive income (loss) 196 427 12 (145) 176 666 Balance as of September 30, 2023 $ (163) $ (1,390) $ (131) $ (1,896) $ 535 $ (3,045) 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, 2021 $ (2) $ (50) $ (130) $ (1,019) $ 68 $ (1,133) Other comprehensive income (loss) before reclassifications (344) (2,041) (1) (1,569) 723 (3,232) Increase (decrease) due to amounts reclassified from accumulated other comprehensive income (6) 84 19 — — 97 Other comprehensive income (loss) (350) (1,957) 18 (1,569) 723 (3,135) Balance as of September 30, 2022 $ (352) $ (2,007) $ (112) $ (2,588) $ 791 $ (4,268) (1) Includes after-tax net unamortized unrealized gains (losses) related to AFS investment securities that have been transferred to HTM of ($578) million and ($749) million as of September 30, 2023 and December 31, 2022, respectively.
Schedule of Reclassifications Out of AOCI	The following tables present after-tax reclassifications into earnings for the periods indicated: Three Months Ended September 30, 2023 2022 (In millions) Amounts Reclassified into Earnings Affected Line Item in Consolidated Statement of Income Investment securities: Net realized (gains) losses from sales of available-for-sale securities, net of related taxes of $81, and $0, respectively $ 213 $ — Net gains (losses) from sales of available-for-sale securities Losses reclassified from accumulated other comprehensive income into income, net of related taxes of $22 and $22, respectively 59 60 Net interest income Cash flow hedges: Losses (gains) reclassified from accumulated other comprehensive income into income, net of related taxes of $14 and $6, respectively 39 16 Net interest income Retirement plans: Amortization of actuarial losses, net of related taxes of $0 and $1, respectively — 2 Compensation and employee benefits expenses Total amounts reclassified from accumulated other comprehensive income $ 311 $ 78 Nine Months Ended September 30, 2023 2022 (In millions) Amounts Reclassified into Earnings Affected Line Item in Consolidated Statement of Income Investment securities: Net realized (gains) losses from sales of available-for-sale securities, net of related taxes of $81 and $1, respectively $ 213 $ 1 Net gains (losses) from sales of available-for-sale securities Losses reclassified from accumulated other comprehensive income into income, net of related taxes of $61 and $31, respectively 165 83 Net interest income Cash flow hedges: Losses (gains) reclassified from accumulated other comprehensive income into income, net of related taxes of $42 and $(3), respectively 113 (6) Net interest income Retirement plans: Amortization of actuarial losses, net of related taxes of $5 and $8, respectively 12 19 Compensation and employee benefits expenses Total amounts reclassified from accumulated other comprehensive income $ 503 $ 97

Regulatory Capital (Tables)

Regulatory Capital (Tables)	9 Months Ended
	Sep. 30, 2023
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 September 30, 2023 Basel III Standardized Approach September 30, 2023 Basel III Advanced Approaches December 31, 2022 Basel III Standardized Approach December 31, 2022 Basel III Advanced Approaches September 30, 2023 Basel III Standardized Approach September 30, 2023 Basel III Advanced Approaches December 31, 2022 Basel III Standardized Approach December 31, 2022 Common shareholders' equity: Common stock and related surplus $ 11,239 $ 11,239 $ 11,234 $ 11,234 $ 13,033 $ 13,033 $ 13,033 $ 13,033 Retained earnings 27,993 27,993 27,028 27,028 15,407 15,407 16,975 16,975 Accumulated other comprehensive income (loss) (3,045) (3,045) (3,711) (3,711) (2,756) (2,756) (3,428) (3,428) Treasury stock, at cost (14,542) (14,542) (11,336) (11,336) — — — — Total 21,645 21,645 23,215 23,215 25,684 25,684 26,580 26,580 Regulatory capital adjustments: Goodwill and other intangible assets, net of associated deferred tax liabilities (8,352) (8,352) (8,545) (8,545) (8,096) (8,096) (8,288) (8,288) Other adjustments (1) (289) (289) (123) (123) (206) (206) (19) (19) Common equity tier 1 capital 13,004 13,004 14,547 14,547 17,382 17,382 18,273 18,273 Preferred stock 1,976 1,976 1,976 1,976 — — — — Tier 1 capital 14,980 14,980 16,523 16,523 17,382 17,382 18,273 18,273 Qualifying subordinated long-term debt 1,374 1,374 1,376 1,376 538 538 542 542 Allowance for credit losses 3 134 — 120 3 134 — 120 Total capital $ 16,357 $ 16,488 $ 17,899 $ 18,019 $ 17,923 $ 18,054 $ 18,815 $ 18,935 Risk-weighted assets: Credit risk (2) $ 62,206 $ 116,045 $ 61,108 $ 105,739 $ 56,273 $ 114,662 $ 54,675 $ 104,184 Operational risk (3) 42,677 NA 42,763 NA 42,299 NA 42,325 NA Market risk 1,963 1,963 1,488 1,488 1,963 1,963 1,488 1,488 Total risk-weighted assets $ 106,846 $ 118,008 $ 105,359 $ 107,227 $ 100,535 $ 116,625 $ 98,488 $ 105,672 Adjusted quarterly average assets $ 259,086 $ 259,086 $ 275,678 $ 275,678 $ 256,408 $ 256,408 $ 273,220 $ 273,220 Capital Ratios: 2023 Minimum Requirements (4) 2022 Minimum Requirements (4) Common equity tier 1 capital 8.0 % 8.0 % 12.2 % 11.0 % 13.8 % 13.6 % 17.3 % 14.9 % 18.6 % 17.3 % Tier 1 capital 9.5 9.5 14.0 12.7 15.7 15.4 17.3 14.9 18.6 17.3 Total capital 11.5 11.5 15.3 14.0 17.0 16.8 17.8 15.5 19.1 17.9 Tier 1 leverage (5) 4.0 4.0 5.8 5.8 6.0 6.0 6.8 6.8 6.7 6.7 (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 OTC 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%. (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 Not applicable

Net Interest Income (Tables)

Net Interest Income (Tables)	9 Months Ended
	Sep. 30, 2023
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 September 30, Nine Months Ended September 30, (In millions) 2023 2022 2023 2022 Interest income: Interest-bearing deposits with banks $ 693 $ 202 $ 2,031 $ 281 Investment securities: Investment securities available-for-sale 464 176 1,218 452 Investment securities held-to-maturity 314 271 954 672 Total investment securities 778 447 2,172 1,124 Securities purchased under resale agreements 65 57 223 105 Loans 492 256 1,330 627 Other interest-earning assets 300 139 831 189 Total interest income 2,328 1,101 6,587 2,326 Interest expense: Interest-bearing deposits 1,332 300 3,479 260 Securities sold under repurchase agreements 6 2 28 5 Short-term borrowings 2 — 34 1 Long-term debt 241 97 635 234 Other interest-bearing liabilities 123 42 330 73 Total interest expense 1,704 441 4,506 573 Net interest income $ 624 $ 660 $ 2,081 $ 1,753

Expenses (Tables)

Expenses (Tables)	9 Months Ended
	Sep. 30, 2023
Other Expenses [Abstract]
Schedule of Expenses	The following table presents the components of other expenses for the periods indicated: Three Months Ended September 30, Nine Months Ended September 30, (In millions) 2023 2022 2023 2022 Professional services $ 99 $ 92 $ 315 $ 273 Sales advertising and public relations 38 28 91 69 Regulatory fees and assessments 18 19 62 63 Securities processing 10 21 35 41 Bank operations 9 11 33 24 Donations 13 7 26 20 Other 98 96 279 289 Total other expenses $ 285 $ 274 $ 841 $ 779
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, 2021 $ 68 $ 6 $ 74 Payments and Other Adjustments (17) (1) (18) Accrual Balance at March 31, 2022 51 5 56 Payments and Other Adjustments (11) — (11) Accrual Balance at June 30, 2022 40 5 45 Payments and Other Adjustments (5) — (5) Accrual Balance at September 30, 2022 $ 35 $ 5 $ 40 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 Payments and Other Adjustments (16) (1) (17) Accrual Balance at June 30, 2023 53 3 56 Payments and Other Adjustments (12) (2) (14) Accrual Balance at September 30, 2023 $ 41 $ 1 $ 42

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2023
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 September 30, Nine Months Ended September 30, (Dollars in millions, except per share amounts) 2023 2022 2023 2022 Net income $ 422 $ 690 $ 1,734 $ 2,041 Less: Preferred stock dividends (24) (21) (84) (76) Dividends and undistributed earnings allocated to participating securities (1) — — (1) (1) Net income available to common shareholders $ 398 $ 669 $ 1,649 $ 1,964 Average common shares outstanding (In thousands): Basic average common shares 313,147 367,789 327,776 367,240 Effect of dilutive securities: equity-based awards 4,182 4,629 4,235 4,954 Diluted average common shares 317,329 372,418 332,011 372,194 Anti-dilutive securities (2) 1,683 1,592 1,368 904 Earnings per common share: Basic $ 1.27 $ 1.82 $ 5.03 $ 5.35 Diluted (3) 1.25 1.80 4.97 5.28 (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 169 to 171 in Note 18 to the consolidated financial statements included under Item 8, Financial Statements and Supplementary Data, in our 2022 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)	9 Months Ended
	Sep. 30, 2023
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 September 30, Investment Investment Other Total (Dollars in millions) 2023 2022 2023 2022 2023 2022 2023 2022 Servicing fees $ 1,234 $ 1,219 $ — $ — $ — $ — $ 1,234 $ 1,219 Management fees — — 479 472 — — 479 472 Foreign exchange trading services 278 293 35 26 — — 313 319 Securities finance 98 105 5 5 — — 103 110 Software and processing fees 188 184 — — — — 188 184 Other fee revenue 41 12 3 (17) — — 44 (5) Total fee revenue 1,839 1,813 522 486 — — 2,361 2,299 Net interest income 620 663 4 (3) — — 624 660 Total other income — — — — (294) — (294) — Total revenue 2,459 2,476 526 483 (294) — 2,691 2,959 Provision for credit losses — — — — — — — — Total expenses 1,798 1,760 379 335 3 15 2,180 2,110 Income before income tax expense $ 661 $ 716 $ 147 $ 148 $ (297) $ (15) $ 511 $ 849 Pre-tax margin 27 % 29 % 28 % 31 % 19 % 29 % Nine Months Ended September 30, Investment Investment Other Total (Dollars in millions) 2023 2022 2023 2022 2023 2022 2023 2022 Servicing fees $ 3,710 $ 3,884 $ — $ — $ — $ — $ 3,710 $ 3,884 Management fees — — 1,397 1,482 — — 1,397 1,482 Foreign exchange trading services 875 948 83 61 — — 958 1,009 Securities finance 310 300 19 13 — — 329 313 Software and processing fees (1) 574 573 — — — — 574 573 Other fee revenue 124 46 23 (65) — 147 (19) Total fee revenue 5,593 5,751 1,522 1,491 — — 7,115 7,242 Net interest income 2,069 1,760 12 (7) — — 2,081 1,753 Total other income — (2) — — (294) — (294) (2) Total revenue 7,662 7,509 1,534 1,484 (294) — 8,902 8,993 Provision for credit losses 26 10 — — — — 26 10 Total expenses 5,626 5,452 1,126 1,051 9 42 6,761 6,545 Income before income tax expense $ 2,010 $ 2,047 $ 408 $ 433 $ (303) $ (42) 2,115 $ 2,438 Pre-tax margin 26 % 27 % 27 % 29 % 24 % 27 %

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	9 Months Ended
	Sep. 30, 2023
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 September 30, 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 $ 1,234 $ — $ 1,234 $ — $ — $ — $ — $ — $ — $ 1,234 Management fees — — — 479 — 479 — — — 479 Foreign exchange trading services 84 194 278 35 — 35 — — — 313 Securities finance 53 45 98 — 5 5 — — — 103 Software and processing fees 142 46 188 — — — — — — 188 Other fee revenue — 41 41 — 3 3 — — — 44 Total fee revenue 1,513 326 1,839 514 8 522 — — — 2,361 Net interest income — 620 620 — 4 4 — — — 624 Total other income — — — — — — — (294) (294) (294) Total revenue $ 1,513 $ 946 $ 2,459 $ 514 $ 12 $ 526 $ — $ (294) $ (294) $ 2,691 Nine Months Ended September 30, 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 $ 3,710 $ — $ 3,710 $ — $ — $ — $ — $ — $ — $ 3,710 Management fees — — — 1,397 — 1,397 — — — 1,397 Foreign exchange trading services 260 615 875 83 — 83 — — — 958 Securities finance 177 133 310 — 19 19 — — — 329 Software and processing fees 436 138 574 — — — — — — 574 Other fee revenue — 124 124 — 23 23 — — — 147 Total fee revenue 4,583 1,010 5,593 1,480 42 1,522 — — — 7,115 Net interest income — 2,069 2,069 — 12 12 — — — 2,081 Total other income — — — — — — — (294) (294) (294) Total revenue $ 4,583 $ 3,079 $ 7,662 $ 1,480 $ 54 $ 1,534 $ — $ (294) $ (294) $ 8,902 Three Months Ended September 30, 2022 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 2022 Servicing fees $ 1,219 $ — $ 1,219 $ — $ — $ — $ — $ — $ — $ 1,219 Management fees — — — 472 — 472 — — — 472 Foreign exchange trading services 88 205 293 26 — 26 — — — 319 Securities finance 60 45 105 — 5 5 — — — 110 Software and processing fees 138 46 184 — — — — — — 184 Other fee revenue — 12 12 — (17) (17) — — — (5) Total fee revenue 1,505 308 1,813 498 (12) 486 — — — 2,299 Net interest income — 663 663 — (3) (3) — — — 660 Total other income — — — — — — — — — — Total revenue $ 1,505 $ 971 $ 2,476 $ 498 $ (15) $ 483 $ — $ — $ — $ 2,959 Nine Months Ended September 30, 2022 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 2022 Servicing fees $ 3,884 $ — $ 3,884 $ — $ — $ — $ — $ — $ — $ 3,884 Management fees — — — 1,482 — 1,482 — — — 1,482 Foreign exchange trading services 279 669 948 61 — 61 — — — 1,009 Securities finance 175 125 300 — 13 13 — — — 313 Software and processing fees 427 146 573 — — — — — — 573 Other fee revenue — 46 46 — (65) (65) — — — (19) Total fee revenue 4,765 986 5,751 1,543 (52) 1,491 — — — 7,242 Net interest income — 1,760 1,760 — (7) (7) — — — 1,753 Total other income — (2) (2) — — — — — — (2) Total revenue $ 4,765 $ 2,744 $ 7,509 $ 1,543 $ (59) $ 1,484 $ — $ — $ — $ 8,993

Non-U.S. Activities (Tables)

Non-U.S. Activities (Tables)	9 Months Ended
	Sep. 30, 2023
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 September 30, 2023 2022 (In millions) Non-U.S. (1) U.S. Total Non-U.S. (1) U.S. Total Total revenue $ 1,081 $ 1,610 $ 2,691 $ 1,232 $ 1,727 $ 2,959 Income before income tax expense 130 381 511 333 516 849 Nine Months Ended September 30, 2023 2022 (In millions) Non-U.S. (1) U.S. Total Non-U.S. (1) U.S. Total Total revenue $ 3,777 $ 5,125 $ 8,902 $ 3,912 $ 5,081 $ 8,993 Income before income tax expense 819 1,296 2,115 1,089 1,349 2,438 (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_3

Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Cash and Cash Equivalents [Line Items]
Cash and due from banks	$ 4,009	$ 3,970
Russia
Cash and Cash Equivalents [Line Items]
Cash and due from banks	1,400	767
Western Europe
Cash and Cash Equivalents [Line Items]
Cash and due from banks	$ 1,900	$ 1,300

Fair Value - Schedule of Fair V

Fair Value - Schedule of Fair Value Measurements on a Recurring Basis (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	$ 725	$ 650
Available-for-sale investment securities:	41,546	40,579
Bank-owned life insurance	7,804	7,664
Derivative asset, collateral, cash offset	1,799	3,298
Derivative liability, collateral, cash offset	4,015	2,727
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	725	650
Available-for-sale investment securities:	41,546	40,579
Derivative asset, Impact of Netting	(12,805)	(18,522)
Bank-owned life insurance	7,804	7,664
Other	694	606
Other assets - impact of netting	0	0
Total	50,769	49,499
Derivative liability, Impact of Netting	(15,021)	(17,951)
Derivative liabilities	5,282	8,015
Total liabilities carried at fair value	5,282	8,015
Recurring | Foreign exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, Impact of Netting	(12,805)	(18,522)
Bank-owned life insurance	7,803	7,664
Derivative liability, Impact of Netting	(15,021)	(17,951)
Derivative liabilities	5,085	7,798
Recurring | Interest rate contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, Impact of Netting		0
Bank-owned life insurance	1	0
Derivative liability, Impact of Netting	0	0
Derivative liabilities	1	1
Recurring | Other derivative contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, Impact of Netting	0
Derivative liability, Impact of Netting	0	0
Derivative liabilities	196	216
Recurring | U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	35	40
Recurring | Non-U.S. government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	133	142
Recurring | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account assets	557	468
Available-for-sale investment securities:	325	1,005
Recurring | Direct obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	7,627	7,981
Recurring | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	9,986	8,509
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:	17,613	16,490
Recurring | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	1,541	1,623
Recurring | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	1,890	1,669
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:	14,666	14,089
Recurring | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	2,022	2,091
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:	20,119	19,472
Recurring | Student loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	118	115
Recurring | Collateralized loan obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	2,640	2,355
Recurring | Non-agency CMBS and RMBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	264	231
Recurring | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	90	88
Recurring | Total asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	3,112	2,789
Recurring | State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investment securities:	377	823
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	35	40
Available-for-sale investment securities:	7,627	7,981
Derivative asset	0	9
Other	7	6
Total	7,669	8,036
Derivative liability	3	3
Total liabilities carried at fair value	3	3
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	9
Derivative liability	2	2
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
Derivative liability	1	1
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 asset	0
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	35	40
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	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:	7,627	7,981
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:	7,627	7,981
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	690	610
Available-for-sale investment securities:	33,919	32,598
Derivative asset	20,605	26,173
Other	687	600
Total	55,901	59,981
Derivative liability	20,299	25,961
Total liabilities carried at fair value	20,299	25,961
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	20,604	26,173
Derivative liability	20,103	25,745
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		0
Derivative liability	0	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 asset	1
Derivative liability	196	216
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	142
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	557	468
Available-for-sale investment securities:	325	1,005
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:	9,986	8,509
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:	9,986	8,509
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:	1,541	1,623
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:	1,890	1,669
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:	14,666	14,089
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:	2,022	2,091
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:	20,119	19,472
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:	118	115
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:	2,640	2,355
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:	264	231
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:	90	88
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:	3,112	2,789
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:	377	823
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	4	4
Other	0	0
Total	4	4
Derivative liability	1	2
Total liabilities carried at fair value	1	2
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	4	4
Derivative liability	1	2
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
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 asset	0
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	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 - Narrative (Details

Fair Value - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Fair Value Disclosures [Abstract]
Transfers into Level 3	$ 0	$ 0	$ 0	$ 0
Transfers out of Level 3	$ 0	$ 0	$ 0	$ 0

Fair Value - Schedule of Fair_2

Fair Value - Schedule of Fair Value Measurements, Assets, Using Significant Unobservable Inputs (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	$ 7,000,000	$ 15,000,000	$ 4,000,000	$ 0
Recorded in revenue	0	7,000,000	(1,000,000)	6,000,000
Recorded in other comprehensive income	0	0	0	0
Purchases	3,000,000	5,000,000	4,000,000	9,000,000
Sales	0	0	0	0
Settlements	(6,000,000)	(12,000,000)	(3,000,000)	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Fair value, end of period	4,000,000	15,000,000	4,000,000	15,000,000
Change in unrealized gains (losses) related to financial instruments, assets, held at period end	0	8,000,000	0	6,000,000
Foreign exchange contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	7,000,000	15,000,000	4,000,000	0
Recorded in revenue	0	7,000,000	(1,000,000)	6,000,000
Recorded in other comprehensive income	0	0	0	0
Purchases	3,000,000	5,000,000	4,000,000	9,000,000
Sales	0	0	0	0
Settlements	(6,000,000)	(12,000,000)	(3,000,000)	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Fair value, end of period	4,000,000	15,000,000	4,000,000	15,000,000
Change in unrealized gains (losses) related to financial instruments, assets, held at period end	0	8,000,000	0	6,000,000
Total derivative instruments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning of period	7,000,000	15,000,000	4,000,000	0
Recorded in revenue	0	7,000,000	(1,000,000)	6,000,000
Recorded in other comprehensive income	0	0	0	0
Purchases	3,000,000	5,000,000	4,000,000	9,000,000
Sales	0	0	0	0
Settlements	(6,000,000)	(12,000,000)	(3,000,000)	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Fair value, end of period	4,000,000	15,000,000	4,000,000	15,000,000
Change in unrealized gains (losses) related to financial instruments, assets, held at period end	$ 0	$ 8,000,000	$ 0	$ 6,000,000

Fair Value - Fair Value Inputs,

Fair Value - Fair Value Inputs, Assets and Liabilities, Quantitative Information (Details) - Pricing Methods with Significant Unobservable Market Inputs (Level 3) $ in Millions	Sep. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Volatility | Option model | Derivative instruments, liabilities | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Derivative liability, measurement input	0.065
Volatility | Option model | Derivative instruments, liabilities | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Derivative liability, measurement input	0.147
Volatility | Option model | Derivative instruments, liabilities | Weighted-Average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Derivative liability, measurement input	0.083	0.098
Volatility | Option model | Total derivative instruments | Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Derivative asset, measurement input	0.057
Volatility | Option model | Total derivative instruments | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Derivative asset, measurement input	0.135
Volatility | Option model | Total derivative instruments | Weighted-Average
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Derivative asset, measurement input	0.086	0.114
Significant unobservable inputs readily available to State Street:
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Total	$ 4	$ 4
Total liabilities carried at fair value	1	2
Significant unobservable inputs readily available to State Street: | Derivative instruments, liabilities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Derivative instruments, foreign exchange contracts	1	2
Significant unobservable inputs readily available to State Street: | Total derivative instruments
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Derivative Instruments, foreign exchange contracts	$ 4	$ 4

Fair Value - Carrying Value and

Fair Value - Carrying Value and Estimated Fair Value of Financial Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Financial Assets:
Cash and due from banks	$ 4,009	$ 3,970
Interest-bearing deposits with banks	76,756	101,593
Securities purchased under resale agreements	1,816	5,215
Investment securities held-to-maturity	54,121	57,913
Financial Liabilities:
Non-interest-bearing	35,824	46,755
Interest-bearing - U.S.	118,561	111,384
Interest-bearing - non-U.S.	58,616	77,325
Securities sold under repurchase agreements	3,097	1,177
Short-term borrowings	8	2,097
Pricing Methods with Significant Observable Market Inputs (Level 2)
Financial Liabilities:
Net loans (excluding leases)		5
Reported Amount
Financial Assets:
Cash and due from banks	4,009	3,970
Interest-bearing deposits with banks	76,756	101,593
Securities purchased under resale agreements	1,816	5,215
Investment securities held-to-maturity	61,956	64,700
Net loans	35,317	32,053
Other	6,869	3,626
Financial Liabilities:
Non-interest-bearing	35,824	46,755
Interest-bearing - U.S.	118,561	111,384
Interest-bearing - non-U.S.	58,616	77,325
Securities sold under repurchase agreements	3,097	1,177
Short-term borrowings	8	2,097
Long-term debt	18,564	14,996
Other	6,869	3,626
Estimated Fair Value
Financial Assets:
Cash and due from banks	4,009	3,970
Interest-bearing deposits with banks	76,756	101,593
Securities purchased under resale agreements	1,816	5,215
Investment securities held-to-maturity	54,121	57,913
Net loans	35,103	31,794
Other	6,869	3,626
Financial Liabilities:
Non-interest-bearing	35,824	46,755
Interest-bearing - U.S.	118,561	111,384
Interest-bearing - non-U.S.	58,616	77,325
Securities sold under repurchase agreements	3,097	1,177
Short-term borrowings	8	2,097
Long-term debt	17,661	14,273
Other	6,869	3,626
Estimated Fair Value | Quoted Market Prices in Active Markets (Level 1)
Financial Assets:
Cash and due from banks	4,009	3,970
Interest-bearing deposits with banks	0	0
Securities purchased under resale agreements	0	0
Investment securities held-to-maturity	11,457	11,336
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
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	76,756	101,593
Securities purchased under resale agreements	1,816	5,215
Investment securities held-to-maturity	42,664	46,577
Net loans	33,055	29,679
Other	6,869	3,626
Financial Liabilities:
Non-interest-bearing	35,824	46,755
Interest-bearing - U.S.	118,561	111,384
Interest-bearing - non-U.S.	58,616	77,325
Securities sold under repurchase agreements	3,097	1,177
Short-term borrowings	8	2,097
Long-term debt	17,523	14,102
Other	6,869	3,626
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	2,048	2,115
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
Short-term borrowings	0	0
Long-term debt	138	171
Other	$ 0	$ 0

Investment Securities - Schedul

Investment Securities - Schedule of Marketable Securities (Details) - USD ($)	9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	$ 42,377,000,000		$ 41,858,000,000
Available for sale, gross unrealized gains	19,000,000		14,000,000
Available for sale, gross unrealized losses	850,000,000		1,293,000,000
Available-for-sale, fair value	41,546,000,000		40,579,000,000
Held to maturity, amortized cost	61,956,000,000		64,700,000,000
Investment securities held-to-maturity	54,121,000,000		57,913,000,000
Allowance for credit losses on available-for-sale securities	0	$ 0	2,000,000	$ 1,000,000	$ 2,000,000	$ 2,000,000
Direct obligations
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	7,812,000,000		8,232,000,000
Available for sale, gross unrealized gains	12,000,000		10,000,000
Available for sale, gross unrealized losses	197,000,000		261,000,000
Available-for-sale, fair value	7,627,000,000		7,981,000,000
Held to maturity, amortized cost	11,758,000,000		11,693,000,000
Held to maturity, gross unrealized gains	0		0
Held to maturity, gross unrealized losses	289,000,000		341,000,000
Investment securities held-to-maturity	11,469,000,000		11,352,000,000
Mortgage-backed securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	10,266,000,000		8,767,000,000
Available for sale, gross unrealized gains	0		2,000,000
Available for sale, gross unrealized losses	280,000,000		260,000,000
Available-for-sale, fair value	9,986,000,000		8,509,000,000
Held to maturity, amortized cost	40,297,000,000		42,307,000,000
Held to maturity, gross unrealized gains	0		3,000,000
Held to maturity, gross unrealized losses	7,232,000,000		6,030,000,000
Investment securities held-to-maturity	33,065,000,000		36,280,000,000
Total U.S. Treasury and federal agencies
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	18,078,000,000		16,999,000,000
Available for sale, gross unrealized gains	12,000,000		12,000,000
Available for sale, gross unrealized losses	477,000,000		521,000,000
Available-for-sale, fair value	17,613,000,000		16,490,000,000
Held to maturity, amortized cost	52,055,000,000		54,000,000,000
Held to maturity, gross unrealized gains	0		3,000,000
Held to maturity, gross unrealized losses	7,521,000,000		6,371,000,000
Investment securities held-to-maturity	44,534,000,000		47,632,000,000
Mortgage-backed securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	1,551,000,000		1,642,000,000
Available for sale, gross unrealized gains	1,000,000		0
Available for sale, gross unrealized losses	11,000,000		19,000,000
Available-for-sale, fair value	1,541,000,000		1,623,000,000
Asset-backed securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	1,903,000,000		1,696,000,000
Available for sale, gross unrealized gains	1,000,000		0
Available for sale, gross unrealized losses	14,000,000		27,000,000
Available-for-sale, fair value	1,890,000,000		1,669,000,000
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	14,910,000,000		14,512,000,000
Available for sale, gross unrealized gains	2,000,000		1,000,000
Available for sale, gross unrealized losses	246,000,000		424,000,000
Available-for-sale, fair value	14,666,000,000		14,089,000,000
Held to maturity, amortized cost	6,452,000,000		6,603,000,000
Held to maturity, gross unrealized gains	0		0
Held to maturity, gross unrealized losses	262,000,000		304,000,000
Investment securities held-to-maturity	6,190,000,000		6,299,000,000
Other
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	2,085,000,000		2,255,000,000
Available for sale, gross unrealized gains	1,000,000		0
Available for sale, gross unrealized losses	64,000,000		164,000,000
Available-for-sale, fair value	2,022,000,000		2,091,000,000
Total non-U.S. debt securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	20,449,000,000		20,105,000,000
Available for sale, gross unrealized gains	5,000,000		1,000,000
Available for sale, gross unrealized losses	335,000,000		634,000,000
Available-for-sale, fair value	20,119,000,000		19,472,000,000
Held to maturity, amortized cost	6,452,000,000		6,603,000,000
Held to maturity, gross unrealized gains	0		0
Held to maturity, gross unrealized losses	262,000,000		304,000,000
Investment securities held-to-maturity	6,190,000,000		6,299,000,000
Student loans
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	118,000,000		116,000,000
Available for sale, gross unrealized gains	0		0
Available for sale, gross unrealized losses	0		1,000,000
Available-for-sale, fair value	118,000,000		115,000,000
Held to maturity, amortized cost	3,442,000,000		3,955,000,000
Held to maturity, gross unrealized gains	3,000,000		1,000,000
Held to maturity, gross unrealized losses	73,000,000		134,000,000
Investment securities held-to-maturity	3,372,000,000		3,822,000,000
Collateralized loan obligations
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	2,649,000,000		2,394,000,000
Available for sale, gross unrealized gains	2,000,000		0
Available for sale, gross unrealized losses	11,000,000		39,000,000
Available-for-sale, fair value	2,640,000,000		2,355,000,000
Non-agency CMBS and RMBS
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	268,000,000		237,000,000
Available for sale, gross unrealized gains	0		0
Available for sale, gross unrealized losses	4,000,000		6,000,000
Available-for-sale, fair value	264,000,000		231,000,000
Held to maturity, amortized cost	7,000,000		142,000,000
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	25,000,000		160,000,000
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	0		0
Available for sale, gross unrealized losses	0		2,000,000
Available-for-sale, fair value	90,000,000		88,000,000
Total asset-backed securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	3,125,000,000		2,837,000,000
Available for sale, gross unrealized gains	2,000,000		0
Available for sale, gross unrealized losses	15,000,000		48,000,000
Available-for-sale, fair value	3,112,000,000		2,789,000,000
Held to maturity, amortized cost	3,449,000,000		4,097,000,000
Held to maturity, gross unrealized gains	21,000,000		19,000,000
Held to maturity, gross unrealized losses	73,000,000		134,000,000
Investment securities held-to-maturity	3,397,000,000		3,982,000,000
State and political subdivisions
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	387,000,000		839,000,000
Available for sale, gross unrealized gains	0		1,000,000
Available for sale, gross unrealized losses	10,000,000		17,000,000
Available-for-sale, fair value	377,000,000		823,000,000
Other U.S. debt securities
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	338,000,000		1,078,000,000
Available for sale, gross unrealized gains	0		0
Available for sale, gross unrealized losses	13,000,000		73,000,000
Available-for-sale, fair value	325,000,000		1,005,000,000
Including MMLF
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Held to maturity, amortized cost	61,956,000,000		64,700,000,000
Held to maturity, gross unrealized gains	21,000,000		22,000,000
Held to maturity, gross unrealized losses	7,856,000,000		6,809,000,000
Investment securities held-to-maturity	54,121,000,000		57,913,000,000
Non-US collateralized loan obligations
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	970,000,000		860,000,000
Non-U.S. debt securities, corporate bonds
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	1,670,000,000		1,140,000,000
US debt securities, corporate bonds
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	330,000,000		1,010,000,000
Non-agency CMBS
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Held to maturity, amortized cost	$ 7,000,000		133,000,000
Non-agency RMBS
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Held to maturity, amortized cost			9,000,000
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	$ 5,630,000,000		6,780,000,000
Held to maturity, amortized cost	5,240,000,000		4,990,000,000
Agency MBS
Available-For-Sale and Held-To-Maturity-Securities [Line Items]
Available for sale, amortized cost	$ 4,360,000,000		$ 1,730,000,000

Investment Securities - Narrati

Investment Securities - Narrative (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) security	Sep. 30, 2022 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Percentage of investment portfolio considered investment grade	99%		99%
Allowance for credit losses on HTM investment securities	$ 1,000,000		$ 1,000,000		$ 0	$ 0
Allowance for credit losses on available-for-sale securities	0	$ 1,000,000	0	$ 1,000,000	$ 0	2,000,000	$ 2,000,000	$ 2,000,000
Provision	0	(1,000,000)	(2,000,000)	(1,000,000)
Charge-offs	0	0	0	0
Marketable securities, unrealized gain (loss)			$ (8,710,000,000)
Number of securities in loss position | security			2,031
Proceeds from sales of available-for-sale securities	3,870,000,000		$ 4,567,000,000	4,545,000,000
Gains (losses) from sales of available-for-sale securities, net	294,000,000	$ 0	294,000,000	$ 2,000,000
Asset pledged as collateral
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Debt securities	$ 79,740,000,000		$ 79,740,000,000			$ 70,520,000,000

Investment Securities - Sched_2

Investment Securities - Schedule of Gross Pre-Tax Unrealized Losses on Investment Securities (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	$ 13,203	$ 19,429
Available for sale, gross unrealized losses less than 12 months	203	369
Available for sale, fair value 12 months or longer	24,415	18,093
Available for sale, gross unrealized losses 12 months or longer	647	924
Available for sale, fair value total	37,618	37,522
Available for sale, gross unrealized losses total	850	1,293
Direct obligations
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	1,310	1,337
Available for sale, gross unrealized losses less than 12 months	27	15
Available for sale, fair value 12 months or longer	5,276	5,745
Available for sale, gross unrealized losses 12 months or longer	170	246
Available for sale, fair value total	6,586	7,082
Available for sale, gross unrealized losses total	197	261
Mortgage-backed securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	3,202	5,524
Available for sale, gross unrealized losses less than 12 months	85	130
Available for sale, fair value 12 months or longer	6,717	2,815
Available for sale, gross unrealized losses 12 months or longer	195	130
Available for sale, fair value total	9,919	8,339
Available for sale, gross unrealized losses total	280	260
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	4,512	6,861
Available for sale, gross unrealized losses less than 12 months	112	145
Available for sale, fair value 12 months or longer	11,993	8,560
Available for sale, gross unrealized losses 12 months or longer	365	376
Available for sale, fair value total	16,505	15,421
Available for sale, gross unrealized losses total	477	521
Mortgage-backed securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	214	1,278
Available for sale, gross unrealized losses less than 12 months	1	15
Available for sale, fair value 12 months or longer	823	272
Available for sale, gross unrealized losses 12 months or longer	10	4
Available for sale, fair value total	1,037	1,550
Available for sale, gross unrealized losses total	11	19
Asset-backed securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	225	859
Available for sale, gross unrealized losses less than 12 months	0	11
Available for sale, fair value 12 months or longer	1,124	765
Available for sale, gross unrealized losses 12 months or longer	14	16
Available for sale, fair value total	1,349	1,624
Available for sale, gross unrealized losses total	14	27
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	6,715	6,750
Available for sale, gross unrealized losses less than 12 months	72	108
Available for sale, fair value 12 months or longer	7,077	5,800
Available for sale, gross unrealized losses 12 months or longer	174	316
Available for sale, fair value total	13,792	12,550
Available for sale, gross unrealized losses total	246	424
Other
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	855	771
Available for sale, gross unrealized losses less than 12 months	10	27
Available for sale, fair value 12 months or longer	902	1,233
Available for sale, gross unrealized losses 12 months or longer	54	137
Available for sale, fair value total	1,757	2,004
Available for sale, gross unrealized losses total	64	164
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	8,009	9,658
Available for sale, gross unrealized losses less than 12 months	83	161
Available for sale, fair value 12 months or longer	9,926	8,070
Available for sale, gross unrealized losses 12 months or longer	252	473
Available for sale, fair value total	17,935	17,728
Available for sale, gross unrealized losses total	335	634
Student loans
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	68	89
Available for sale, gross unrealized losses less than 12 months	0	1
Available for sale, fair value 12 months or longer	0	0
Available for sale, gross unrealized losses 12 months or longer	0	0
Available for sale, fair value total	68	89
Available for sale, gross unrealized losses total	0	1
Collateralized loan obligations
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	328	1,577
Available for sale, gross unrealized losses less than 12 months	0	27
Available for sale, fair value 12 months or longer	1,860	710
Available for sale, gross unrealized losses 12 months or longer	11	12
Available for sale, fair value total	2,188	2,287
Available for sale, gross unrealized losses total	11	39
Non-agency CMBS and RMBS
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	39	193
Available for sale, gross unrealized losses less than 12 months	1	6
Available for sale, fair value 12 months or longer	180	3
Available for sale, gross unrealized losses 12 months or longer	3	0
Available for sale, fair value total	219	196
Available for sale, gross unrealized losses total	4	6
Other
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months		88
Available for sale, gross unrealized losses less than 12 months		2
Available for sale, fair value 12 months or longer		0
Available for sale, gross unrealized losses 12 months or longer		0
Available for sale, fair value total		88
Available for sale, gross unrealized losses total		2
Total asset-backed securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	435	1,947
Available for sale, gross unrealized losses less than 12 months	1	36
Available for sale, fair value 12 months or longer	2,040	713
Available for sale, gross unrealized losses 12 months or longer	14	12
Available for sale, fair value total	2,475	2,660
Available for sale, gross unrealized losses total	15	48
State and political subdivisions
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	244	669
Available for sale, gross unrealized losses less than 12 months	7	12
Available for sale, fair value 12 months or longer	133	42
Available for sale, gross unrealized losses 12 months or longer	3	5
Available for sale, fair value total	377	711
Available for sale, gross unrealized losses total	10	17
Other U.S. debt securities
Gross Pre-Tax Unrealized Losses On Investment Securities [Line Items]
Available for sale, fair value less than 12 months	3	294
Available for sale, gross unrealized losses less than 12 months	0	15
Available for sale, fair value 12 months or longer	323	708
Available for sale, gross unrealized losses 12 months or longer	13	58
Available for sale, fair value total	326	1,002
Available for sale, gross unrealized losses total	$ 13	$ 73

Investment Securities - Sched_3

Investment Securities - Schedule of Contractual Maturities of Debt Securities (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	$ 7,299
Available for sale, under 1 year, fair value	7,244
Available for sale, 1 to 5 years, amortized cost	17,579
Available for sale, 1 to 5 years, fair value	17,120
Available for sale, 6 to 10 years, amortized cost	10,178
Available for sale, 6 to 10 years, fair value	10,046
Available for sale, over 10 years, amortized cost	7,321
Available for sale, over 10 years, fair value	7,136
Available for sale, amortized cost	42,377	$ 41,858
Available for sale, fair value	41,546	40,579
Held to maturity, amortized cost	61,956	64,700
Investment securities held-to-maturity	54,121	57,913
Direct obligations
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	291
Available for sale, under 1 year, fair value	291
Available for sale, 1 to 5 years, amortized cost	6,920
Available for sale, 1 to 5 years, fair value	6,730
Available for sale, 6 to 10 years, amortized cost	601
Available for sale, 6 to 10 years, fair value	606
Available for sale, over 10 years, amortized cost	0
Available for sale, over 10 years, fair value	0
Available for sale, amortized cost	7,812	8,232
Available for sale, fair value	7,627	7,981
Held to maturity, under 1 year, amortized cost	6,284
Held to maturity, under 1 year, fair value	6,230
Held to maturity, 1 to 5 years, amortized cost	5,439
Held to maturity, 1 to 5 years, fair value	5,206
Held to maturity, 6 to 10 years, amortized cost	24
Held to maturity, 6 to 10 years, fair value	22
Held to maturity, over 10 years, amortized cost	11
Held to maturity, over 10 years, fair value	11
Held to maturity, amortized cost	11,758	11,693
Investment securities held-to-maturity	11,469	11,352
Mortgage-backed securities
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	1,309
Available for sale, 1 to 5 years, fair value	1,291
Available for sale, 6 to 10 years, amortized cost	4,398
Available for sale, 6 to 10 years, fair value	4,307
Available for sale, over 10 years, amortized cost	4,518
Available for sale, over 10 years, fair value	4,347
Available for sale, amortized cost	10,266	8,767
Available for sale, fair value	9,986	8,509
Held to maturity, under 1 year, amortized cost	132
Held to maturity, under 1 year, fair value	115
Held to maturity, 1 to 5 years, amortized cost	594
Held to maturity, 1 to 5 years, fair value	547
Held to maturity, 6 to 10 years, amortized cost	4,523
Held to maturity, 6 to 10 years, fair value	3,653
Held to maturity, over 10 years, amortized cost	35,048
Held to maturity, over 10 years, fair value	28,750
Held to maturity, amortized cost	40,297	42,307
Investment securities held-to-maturity	33,065	36,280
Total U.S. Treasury and federal agencies
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	332
Available for sale, 1 to 5 years, amortized cost	8,229
Available for sale, 1 to 5 years, fair value	8,021
Available for sale, 6 to 10 years, amortized cost	4,999
Available for sale, 6 to 10 years, fair value	4,913
Available for sale, over 10 years, amortized cost	4,518
Available for sale, over 10 years, fair value	4,347
Available for sale, amortized cost	18,078	16,999
Available for sale, fair value	17,613	16,490
Held to maturity, under 1 year, amortized cost	6,416
Held to maturity, under 1 year, fair value	6,345
Held to maturity, 1 to 5 years, amortized cost	6,033
Held to maturity, 1 to 5 years, fair value	5,753
Held to maturity, 6 to 10 years, amortized cost	4,547
Held to maturity, 6 to 10 years, fair value	3,675
Held to maturity, over 10 years, amortized cost	35,059
Held to maturity, over 10 years, fair value	28,761
Held to maturity, amortized cost	52,055	54,000
Investment securities held-to-maturity	44,534	47,632
Mortgage-backed securities
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	142
Available for sale, under 1 year, fair value	142
Available for sale, 1 to 5 years, amortized cost	243
Available for sale, 1 to 5 years, fair value	242
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	1,166
Available for sale, over 10 years, fair value	1,157
Available for sale, amortized cost	1,551	1,642
Available for sale, fair value	1,541	1,623
Asset-backed securities
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	319
Available for sale, under 1 year, fair value	315
Available for sale, 1 to 5 years, amortized cost	419
Available for sale, 1 to 5 years, fair value	415
Available for sale, 6 to 10 years, amortized cost	554
Available for sale, 6 to 10 years, fair value	551
Available for sale, over 10 years, amortized cost	611
Available for sale, over 10 years, fair value	609
Available for sale, amortized cost	1,903	1,696
Available for sale, fair value	1,890	1,669
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	5,627
Available for sale, under 1 year, fair value	5,591
Available for sale, 1 to 5 years, amortized cost	6,483
Available for sale, 1 to 5 years, fair value	6,304
Available for sale, 6 to 10 years, amortized cost	2,800
Available for sale, 6 to 10 years, fair value	2,771
Available for sale, over 10 years, amortized cost	0
Available for sale, over 10 years, fair value	0
Available for sale, amortized cost	14,910	14,512
Available for sale, fair value	14,666	14,089
Held to maturity, under 1 year, amortized cost	2,261
Held to maturity, under 1 year, fair value	2,231
Held to maturity, 1 to 5 years, amortized cost	3,690
Held to maturity, 1 to 5 years, fair value	3,504
Held to maturity, 6 to 10 years, amortized cost	501
Held to maturity, 6 to 10 years, fair value	455
Held to maturity, over 10 years, amortized cost	0
Held to maturity, over 10 years, fair value	0
Held to maturity, amortized cost	6,452	6,603
Investment securities held-to-maturity	6,190	6,299
Other
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	341
Available for sale, under 1 year, fair value	335
Available for sale, 1 to 5 years, amortized cost	1,570
Available for sale, 1 to 5 years, fair value	1,515
Available for sale, 6 to 10 years, amortized cost	174
Available for sale, 6 to 10 years, fair value	172
Available for sale, over 10 years, amortized cost	0
Available for sale, over 10 years, fair value	0
Available for sale, amortized cost	2,085	2,255
Available for sale, fair value	2,022	2,091
Total non-U.S. debt securities
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	6,429
Available for sale, under 1 year, fair value	6,383
Available for sale, 1 to 5 years, amortized cost	8,715
Available for sale, 1 to 5 years, fair value	8,476
Available for sale, 6 to 10 years, amortized cost	3,528
Available for sale, 6 to 10 years, fair value	3,494
Available for sale, over 10 years, amortized cost	1,777
Available for sale, over 10 years, fair value	1,766
Available for sale, amortized cost	20,449	20,105
Available for sale, fair value	20,119	19,472
Held to maturity, under 1 year, amortized cost	2,261
Held to maturity, under 1 year, fair value	2,231
Held to maturity, 1 to 5 years, amortized cost	3,690
Held to maturity, 1 to 5 years, fair value	3,504
Held to maturity, 6 to 10 years, amortized cost	501
Held to maturity, 6 to 10 years, fair value	455
Held to maturity, over 10 years, amortized cost	0
Held to maturity, over 10 years, fair value	0
Held to maturity, amortized cost	6,452	6,603
Investment securities held-to-maturity	6,190	6,299
Student loans
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	33
Available for sale, under 1 year, fair value	33
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	85
Available for sale, over 10 years, fair value	85
Available for sale, amortized cost	118	116
Available for sale, fair value	118	115
Held to maturity, under 1 year, amortized cost	237
Held to maturity, under 1 year, fair value	231
Held to maturity, 1 to 5 years, amortized cost	232
Held to maturity, 1 to 5 years, fair value	231
Held to maturity, 6 to 10 years, amortized cost	622
Held to maturity, 6 to 10 years, fair value	612
Held to maturity, over 10 years, amortized cost	2,351
Held to maturity, over 10 years, fair value	2,298
Held to maturity, amortized cost	3,442	3,955
Investment securities held-to-maturity	3,372	3,822
Collateralized loan obligations
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	122
Available for sale, under 1 year, fair value	122
Available for sale, 1 to 5 years, amortized cost	345
Available for sale, 1 to 5 years, fair value	343
Available for sale, 6 to 10 years, amortized cost	1,489
Available for sale, 6 to 10 years, fair value	1,482
Available for sale, over 10 years, amortized cost	693
Available for sale, over 10 years, fair value	693
Available for sale, amortized cost	2,649	2,394
Available for sale, fair value	2,640	2,355
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	20
Available for sale, 1 to 5 years, fair value	19
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	248
Available for sale, over 10 years, fair value	245
Available for sale, amortized cost	268	237
Available for sale, fair value	264	231
Held to maturity, under 1 year, amortized cost	1
Held to maturity, under 1 year, fair value	8
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	6
Held to maturity, over 10 years, fair value	17
Held to maturity, amortized cost	7	142
Investment securities held-to-maturity	25	160
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	90
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	90	88
Total asset-backed securities
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	155
Available for sale, under 1 year, fair value	155
Available for sale, 1 to 5 years, amortized cost	455
Available for sale, 1 to 5 years, fair value	452
Available for sale, 6 to 10 years, amortized cost	1,489
Available for sale, 6 to 10 years, fair value	1,482
Available for sale, over 10 years, amortized cost	1,026
Available for sale, over 10 years, fair value	1,023
Available for sale, amortized cost	3,125	2,837
Available for sale, fair value	3,112	2,789
Held to maturity, under 1 year, amortized cost	238
Held to maturity, under 1 year, fair value	239
Held to maturity, 1 to 5 years, amortized cost	232
Held to maturity, 1 to 5 years, fair value	231
Held to maturity, 6 to 10 years, amortized cost	622
Held to maturity, 6 to 10 years, fair value	612
Held to maturity, over 10 years, amortized cost	2,357
Held to maturity, over 10 years, fair value	2,315
Held to maturity, amortized cost	3,449	4,097
Investment securities held-to-maturity	3,397	3,982
State and political subdivisions
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	125
Available for sale, under 1 year, fair value	122
Available for sale, 1 to 5 years, amortized cost	100
Available for sale, 1 to 5 years, fair value	98
Available for sale, 6 to 10 years, amortized cost	162
Available for sale, 6 to 10 years, fair value	157
Available for sale, over 10 years, amortized cost	0
Available for sale, over 10 years, fair value	0
Available for sale, amortized cost	387	839
Available for sale, fair value	377	823
Other U.S. debt securities
Contractual Maturities Of Debt Investment Securities [Line Items]
Available for sale, under 1 year, amortized cost	258
Available for sale, under 1 year, fair value	252
Available for sale, 1 to 5 years, amortized cost	80
Available for sale, 1 to 5 years, fair value	73
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	338	1,078
Available for sale, fair value	325	$ 1,005
Total
Contractual Maturities Of Debt Investment Securities [Line Items]
Held to maturity, under 1 year, amortized cost	8,915
Held to maturity, under 1 year, fair value	8,815
Held to maturity, 1 to 5 years, amortized cost	9,955
Held to maturity, 1 to 5 years, fair value	9,488
Held to maturity, 6 to 10 years, amortized cost	5,670
Held to maturity, 6 to 10 years, fair value	4,742
Held to maturity, over 10 years, amortized cost	37,416
Held to maturity, over 10 years, fair value	31,076
Held to maturity, amortized cost	61,956
Investment securities held-to-maturity	$ 54,121

Loans and Allowance for Credi_3

Loans and Allowance for Credit Losses - Net Loans (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	$ 35,436	$ 32,150
Allowance for credit losses	(119)	(97)
Loans, net of allowance	35,317	32,053
Floating Rate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	28,850
Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	21,509	21,248
Domestic | Collateralized loan obligations in loan form
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	100	100
Non-U.S.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	13,927	10,902
Non-U.S. | Collateralized loan obligations in loan form
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	5,446	4,741
Fund Finance | Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	12,732	12,154
Fund Finance | Domestic | Private Equity Capital Call Finance Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	9,330	7,570
Fund Finance | Domestic | Real Money Funds
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	5,970	6,610
Fund Finance | Domestic | Business Development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	1,190	1,110
Fund Finance | Non-U.S.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	4,809	3,949
Leveraged loans | Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	2,336	2,431
Leveraged loans | Non-U.S.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	1,096	1,118
Overdrafts | Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	1,017	1,707
Overdrafts | Non-U.S.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	2,576	1,094
Other | Securities Finance Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	1,930	1,510
Other | Municipal Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	276	321
Other | Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	6	42
Other | Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	2,207	1,871
Commercial real estate | Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	3,117	$ 2,985
Excluding Overdrafts | Fixed Rate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	$ 2,990

Loans and Allowance for Credi_4

Loans and Allowance for Credit Losses - Narrative (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($) loan	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) loanSegment loan	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) loan
Financing Receivable, Credit Quality Indicator [Line Items]
Number of loans and leases segments | loanSegment			2
Loans pledged as collateral	$ 35,317,000,000		$ 35,317,000,000		$ 32,053,000,000
Number of loans on non-accrual status | loan	3		3		0
Nonaccrual loan value	$ 76,000,000		$ 76,000,000
Financing receivable, held-for-sale	7,000,000		7,000,000		$ 5,000,000
Charge-offs	2,000,000
Allowance for credit losses on loans	$ 119,000,000		$ 119,000,000		97,000,000
Investment grade loans	86%		86%
Speculative grade loans	12%		12%
Speculative senior secured loans with BB or B rating	92%		92%
Provision for credit losses	$ 0	$ 0	$ 26,000,000	$ 10,000,000
Asset pledged as collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Loans pledged as collateral	11,560,000,000		11,560,000,000		$ 10,170,000,000
Leveraged Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Financing receivable for sale	74,000,000
Financing receivable, held-for-sale	$ 7,000,000		$ 7,000,000
Commercial and Financial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans no longer meeting similar risk of collective pool | loan	8		8
Loans no longer meeting similar risk of collective pool, amount	$ 68,000,000		$ 68,000,000
Allowance for credit losses on loans	$ 33,000,000		$ 33,000,000
Commercial Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
Loans no longer meeting similar risk of collective pool | loan	1		1
Loans no longer meeting similar risk of collective pool, amount	$ 47,000,000		$ 47,000,000

Loans and Allowance for Credi_5

Loans and Allowance for Credit Losses - Investments by Credit Quality (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 35,429	$ 32,145
Financing receivable, held-for-sale	7	5
Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Total	30,595	27,176
Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Total	4,352	4,491
Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total	367	379
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total	39	99
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total	76
Commercial and Financial
Financing Receivable, Credit Quality Indicator [Line Items]
Total	32,312	29,160
Commercial and Financial | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Total	28,160	24,667
Commercial and Financial | Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Total	3,816	4,103
Commercial and Financial | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total	268	291
Commercial and Financial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total	39	99
Commercial and Financial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total	29
Commercial Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
Total	3,117	2,985
Commercial Real Estate | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Total	2,435	2,509
Commercial Real Estate | Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Total	536	388
Commercial Real Estate | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total	99	88
Commercial Real Estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Commercial Real Estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total	47
Domestic | Commercial and Financial
Financing Receivable, Credit Quality Indicator [Line Items]
Total	18,384	18,258
Domestic | Commercial and Financial | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Total	15,668	14,986
Domestic | Commercial and Financial | Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Total	2,450	2,943
Domestic | Commercial and Financial | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total	212	244
Domestic | Commercial and Financial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total	25	85
Domestic | Commercial and Financial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total	29
Domestic | Commercial Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
Total	3,117	2,985
Domestic | Commercial Real Estate | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Total	2,435	2,508
Domestic | Commercial Real Estate | Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Total	536	388
Domestic | Commercial Real Estate | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total	99	89
Domestic | Commercial Real Estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total	47
Domestic | Fund Finance
Financing Receivable, Credit Quality Indicator [Line Items]
Overdrafts	3,590	$ 2,800
Domestic | Fund Finance | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Overdrafts	3,210
Domestic | Fund Finance | Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Overdrafts	$ 380

Loans and Allowance for Credi_6

Loans and Allowance for Credit Losses - Amortized Cost Basis (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	$ 5,307	$ 5,839
Fiscal year before current fiscal year	2,997	5,104
Two years before current fiscal year	4,984	512
Three years before current fiscal year	432	1,636
Four years before current fiscal year	1,308	1,092
Prior	1,438	668
Revolving Loans	18,963	17,294
Loans, gross, excluding loans classified as held-for-sale	35,429	32,145
Financing receivable, accrued interest, before allowance for credit loss	325	200
Financing receivable, held-for-sale	7	5
Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	30,595	27,176
Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	4,352	4,491
Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	367	379
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	39	99
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	76
Commercial and Financial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	32,312	29,160
Commercial and Financial | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	28,160	24,667
Commercial and Financial | Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	3,816	4,103
Commercial and Financial | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	268	291
Commercial and Financial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	39	99
Commercial and Financial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	29
Commercial and Financial | Domestic
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	1,578	2,100
Fiscal year before current fiscal year	364	1,164
Two years before current fiscal year	1,132	245
Three years before current fiscal year	179	908
Four years before current fiscal year	663	286
Prior	191	167
Revolving Loans	14,277	13,388
Loans, gross, excluding loans classified as held-for-sale	18,384	18,258
Commercial and Financial | Domestic | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	1,095	1,577
Fiscal year before current fiscal year	100	185
Two years before current fiscal year	204	72
Three years before current fiscal year	61	300
Four years before current fiscal year	272	0
Prior	6	9
Revolving Loans	13,930	12,843
Loans, gross, excluding loans classified as held-for-sale	15,668	14,986
Commercial and Financial | Domestic | Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	458	523
Fiscal year before current fiscal year	264	859
Two years before current fiscal year	749	168
Three years before current fiscal year	113	461
Four years before current fiscal year	334	236
Prior	185	151
Revolving Loans	347	545
Loans, gross, excluding loans classified as held-for-sale	2,450	2,943
Commercial and Financial | Domestic | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
Fiscal year before current fiscal year	0	120
Two years before current fiscal year	155	0
Three years before current fiscal year	0	105
Four years before current fiscal year	57	19
Prior	0	0
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	212	244
Commercial and Financial | Domestic | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	20	0
Fiscal year before current fiscal year	0	0
Two years before current fiscal year	0	5
Three years before current fiscal year	5	42
Four years before current fiscal year	0	31
Prior	0	7
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	25	85
Commercial and Financial | Domestic | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	5
Fiscal year before current fiscal year	0
Two years before current fiscal year	24
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	29
Commercial and Financial | Non-U.S.
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	3,514	3,220
Fiscal year before current fiscal year	2,113	3,328
Two years before current fiscal year	3,323	118
Three years before current fiscal year	103	186
Four years before current fiscal year	104	144
Prior	85	0
Revolving Loans	4,686	3,906
Loans, gross, excluding loans classified as held-for-sale	13,928	10,902
Commercial and Financial | Non-U.S. | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	3,031	2,986
Fiscal year before current fiscal year	1,982	2,799
Two years before current fiscal year	2,793	0
Three years before current fiscal year	0	0
Four years before current fiscal year	0	0
Prior	0	0
Revolving Loans	4,686	3,897
Loans, gross, excluding loans classified as held-for-sale	12,492	9,682
Commercial and Financial | Non-U.S. | Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	483	234
Fiscal year before current fiscal year	131	529
Two years before current fiscal year	502	100
Three years before current fiscal year	75	181
Four years before current fiscal year	104	107
Prior	71	0
Revolving Loans	0	9
Loans, gross, excluding loans classified as held-for-sale	1,366	1,160
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	28	18
Three years before current fiscal year	28	5
Four years before current fiscal year	0	23
Prior	0	0
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	56	46
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	14
Prior	14	0
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	3,117	2,985
Commercial real estate | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	2,435	2,509
Commercial real estate | Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	536	388
Commercial real estate | Special mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	99	88
Commercial real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	0	0
Commercial real estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, gross, excluding loans classified as held-for-sale	47
Commercial real estate | Domestic
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	215	519
Fiscal year before current fiscal year	520	612
Two years before current fiscal year	529	149
Three years before current fiscal year	150	542
Four years before current fiscal year	541	662
Prior	1,162	501
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	3,117	2,985
Commercial real estate | Domestic | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	215	519
Fiscal year before current fiscal year	500	612
Two years before current fiscal year	498	100
Three years before current fiscal year	100	330
Four years before current fiscal year	375	511
Prior	747	436
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	2,435	2,508
Commercial real estate | Domestic | Speculative
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0	0
Fiscal year before current fiscal year	20	0
Two years before current fiscal year	31	49
Three years before current fiscal year	50	163
Four years before current fiscal year	144	111
Prior	291	65
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	536	388
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	49
Four years before current fiscal year	22	40
Prior	77	0
Revolving Loans	0	0
Loans, gross, excluding loans classified as held-for-sale	99	$ 89
Commercial real estate | Domestic | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Current fiscal year	0
Fiscal year before current fiscal year	0
Two years before current fiscal year	0
Three years before current fiscal year	0
Four years before current fiscal year	0
Prior	47
Revolving Loans	0
Loans, gross, excluding loans classified as held-for-sale	$ 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		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			$ 97,000,000
Charge-offs	$ (2,000,000)
Provision for credit losses	0	$ 0	26,000,000	$ 10,000,000
Ending balance	119,000,000		119,000,000
Debt Securities, Available-for-Sale, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward]
Beginning balance	0	2,000,000	2,000,000	2,000,000
Charge-offs	0	0	0	0
Provision	0	(1,000,000)	(2,000,000)	(1,000,000)
Ending balance	0	1,000,000	0	1,000,000
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Roll Forward]
Beginning balance	0		0
Charge-offs	0		0
Provision	1,000,000		1,000,000
Ending balance	1,000,000		1,000,000
Leveraged Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	80,000,000	69,000,000	73,000,000	61,000,000
Charge-offs	(2,000,000)	0	(13,000,000)	(4,000,000)
Provision for credit losses	(6,000,000)	6,000,000	12,000,000	18,000,000
Ending balance	72,000,000	75,000,000	72,000,000	75,000,000
Other Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	3,000,000	10,000,000	5,000,000	12,000,000
Charge-offs	0	0	0	0
Provision for credit losses	0	(5,000,000)	(2,000,000)	(7,000,000)
Ending balance	3,000,000	5,000,000	3,000,000	5,000,000
Other Loans | Fund Finance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Ending balance	2,000,000	4,000,000	2,000,000	4,000,000
Other Loans | Other Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Ending balance	1,000,000	1,000,000	1,000,000	1,000,000
Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	37,000,000	16,000,000	19,000,000	14,000,000
Charge-offs	0	0	0	0
Provision for credit losses	7,000,000	2,000,000	25,000,000	4,000,000
Ending balance	44,000,000	18,000,000	44,000,000	18,000,000
Off-Balance Sheet Commitments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	15,000,000	17,000,000	23,000,000	19,000,000
Charge-offs	0	0	0	0
Provision for credit losses	(1,000,000)	(2,000,000)	(9,000,000)	(4,000,000)
Ending balance	14,000,000	15,000,000	14,000,000	15,000,000
All Other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	1,000,000	0	(1,000,000)	0
Charge-offs	0	0	0	0
Provision for credit losses	(1,000,000)	0	1,000,000	0
Ending balance	0	0	0	0
Total
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	136,000,000	114,000,000	121,000,000	108,000,000
Charge-offs	(2,000,000)	0	(13,000,000)	(4,000,000)
Provision for credit losses	0	0	26,000,000	10,000,000
Ending balance	$ 134,000,000	$ 114,000,000	$ 134,000,000	$ 114,000,000

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Changes in the Carrying Amount of Goodwill (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Goodwill [Roll Forward]
Beginning balance	$ 7,495	$ 7,621
Acquisitions		3
Foreign currency translation	(8)	(129)
Ending balance	7,487	7,495
Investment Servicing
Goodwill [Roll Forward]
Beginning balance	7,232	7,354
Acquisitions		3
Foreign currency translation	(8)	(125)
Ending balance	7,224	7,232
Investment Management
Goodwill [Roll Forward]
Beginning balance	263	267
Acquisitions		0
Foreign currency translation	0	(4)
Ending balance	$ 263	$ 263

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		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			$ 1,544	$ 1,816	$ 1,816
Amortization	$ (60)	$ (58)	(180)	(179)	(238)
Foreign currency translation			(1)		(34)
Ending balance	1,363		1,363		1,544
Investment Servicing
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			1,495	1,746	1,746
Amortization			(164)		(217)
Foreign currency translation			(1)		(34)
Ending balance	1,330		1,330		1,495
Investment Management
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			49	$ 70	70
Amortization			(16)		(21)
Foreign currency translation			0		0
Ending balance	$ 33		$ 33		$ 49

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	Sep. 30, 2023	Dec. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 3,887	$ 3,897
Accumulated amortization	(2,524)	(2,353)
Net carrying amount	1,363	1,544	$ 1,816
Client relationships
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	2,722	2,728
Accumulated amortization	(1,743)	(1,626)
Net carrying amount	979	1,102
Technology
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	401	402
Accumulated amortization	(206)	(178)
Net carrying amount	195	224
Core deposits
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	681	683
Accumulated amortization	(501)	(477)
Net carrying amount	180	206
Other
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	83	84
Accumulated amortization	(74)	(72)
Net carrying amount	$ 9	$ 12

Other Assets (Details)

Other Assets (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023	Dec. 31, 2022
Other Assets [Abstract]
Securities borrowed	$ 24,065	$ 24,065	$ 16,489
Derivative instruments, net	7,804	7,804	7,664
Bank-owned life insurance	3,730	3,730	3,649
Investments in joint ventures and other unconsolidated entities	2,840	2,840	3,245
Collateral, net	3,104	3,104	1,833
Deferred tax assets, net of valuation allowance	1,020	1,020	1,127
Prepaid expenses	610	610	558
Receivable for securities settlement	670	670	383
Right-of-use assets	823	823	500
Accounts receivable	472	472	404
Income taxes receivable	238	238	235
Deposits with clearing organizations	58	58	62
Other	1,798	1,798	1,753
Total	47,232	47,232	37,902
Equity securities without readily determinable fair value, amount	181	181	179
Equity securities without readily determinable fair value, impairment loss	5	5
Advances	$ 968	$ 968	$ 1,201

Derivative Financial Instrume_3

Derivative Financial Instruments - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Derivative [Line Items]
Cash flow hedge gains to be reclassified within twelve months	$ 210
Maximum length of time hedged in cash flow hedge	5 years
Fair value of derivative liabilities	$ 20,303	$ 25,966
Interest rate swap | Fair Value Hedges
Derivative [Line Items]
Notional amount of derivative instruments	19,590	$ 20,320
Credit swap agreements
Derivative [Line Items]
Fair value of derivative liabilities	5,080
Cash collateral provided for derivative instruments	4,070
Maximum additional amount of payments related to termination events	$ 1,010

Derivative Financial Instrume_4

Derivative Financial Instruments - Schedule of Outstanding Hedges: (Notional Amount) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Derivatives not designated as hedging instruments | Interest rate contracts | Futures
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	$ 15,704	$ 8,683
Derivatives not designated as hedging instruments | Foreign exchange contracts | Futures
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	148	1,550
Derivatives not designated as hedging instruments | Foreign exchange contracts | Forward, swap and spot
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	2,379,456	2,267,221
Derivatives not designated as hedging instruments | Foreign exchange contracts | Options purchased
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	683	607
Derivatives not designated as hedging instruments | Foreign exchange contracts | Options written
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	278	445
Derivatives not designated as hedging instruments | Other derivative contracts | Futures
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	130	0
Derivatives not designated as hedging instruments | Other derivative contracts | Stable value contracts
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	29,490	31,391
Derivatives not designated as hedging instruments | Other derivative contracts | Deferred value awards
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	320	300
Derivatives designated as hedging instruments | Interest rate contracts | Swap agreements
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	20,453	22,566
Derivatives designated as hedging instruments | Foreign exchange contracts | Forward and swap
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of derivative instruments	$ 9,279	$ 8,213

Derivative Financial Instrume_5

Derivative Financial Instruments - Schedule of the Fair Values of Derivative Financial Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	$ 20,609	$ 26,186
Fair value of derivative liabilities	20,303	25,966
Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	20,608	26,186
Fair value of derivative liabilities	20,106	25,749
Interest rate contracts
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	1	0
Fair value of derivative liabilities	1	1
Derivatives not designated as hedging instruments | Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	20,090	26,081
Derivatives not designated as hedging instruments | Other Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	20,299	25,623
Derivatives not designated as hedging instruments | Foreign exchange contracts | Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	20,090	26,081
Derivatives not designated as hedging instruments | Foreign exchange contracts | Other Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	20,103	25,407
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	196	216
Derivatives designated as hedging instruments | Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	519	105
Derivatives designated as hedging instruments | Other Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	4	343
Derivatives designated as hedging instruments | Foreign exchange contracts | Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	518	105
Derivatives designated as hedging instruments | Foreign exchange contracts | Other Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	3	342
Derivatives designated as hedging instruments | Interest rate contracts | Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	1	0
Derivatives designated as hedging instruments | Interest rate contracts | Other Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	$ 1	$ 1

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		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	$ 156	$ 180	$ 485	$ 601
Foreign exchange contracts | Foreign exchange trading services
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	198	207	621	676
Foreign exchange contracts | Interest expense
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	(24)	(16)	(40)	0
Interest rate contracts
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	(3)	0	(2)	0
Other derivative contracts
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income		$ (11)		$ (75)
Other derivative contracts | Other fee revenue
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	6		5
Other derivative contracts | Compensation and employee benefits
Derivative [Line Items]
Amount of gain (loss) on derivative recognized in income	$ (21)		$ (99)

Derivative Financial Instrume_7

Derivative Financial Instruments - Carrying Amount and Cumulative Basis Adjustments for Hedge Accounting (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Prepayable financial asset closed portfolio, amortized cost	$ 699	$ 207
Prepayable financial asset closed portfolio, last-of-layer, amortized cost	400	64
Cumulative adjustment associated with hedging relationships	(16)	(4)
Hedged Items Currently Designated | Long-term debt
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Carrying Amount of Hedged Assets/Liabilities	13,960	12,513
Cumulative Hedge Accounting Basis Adjustments	(594)	(644)
Hedged Items Currently Designated | Available-For-Sale Debt Securities
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Carrying Amount of Hedged Assets/Liabilities	9,957	9,801
Cumulative Hedge Accounting Basis Adjustments	(767)	(675)
De-designated | Long-term debt
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cumulative Hedge Accounting Basis Adjustments	176	362
De-designated | Available-For-Sale Debt Securities
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cumulative Hedge Accounting Basis Adjustments	$ 4	$ 8

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		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of gain (loss) on derivative recognized in consolidated statement of income	$ (19)	$ 88	$ 47	$ 107
Amount of gain (loss) on hedged item recognized in consolidated statement of income	19	(88)	(48)	(109)
Net unrealized gains (losses) on available-for-sale securities designated in fair value hedges, net of related taxes	36	256	70	526
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	57	349	99	707
Amount of gain (loss) on hedged item recognized in consolidated statement of income	(57)	(349)	(100)	(709)
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	(76)	(261)	(52)	(600)
Amount of gain (loss) on hedged item recognized in consolidated statement of income	$ 76	$ 261	$ 52	$ 600

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		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Derivative [Line Items]
Gain (loss) on derivative recognized in OCI, cash flow hedge	$ 32	$ (183)	$ 111	$ (389)
Gain (loss) on derivative recognized in OCI, net investment hedge	225	395	176	723
Other comprehensive income (loss), derivative, before reclassification and tax	257	212	287	334
Gain (loss) on hedges reclassified to income, cash flow hedge	(53)	(22)	(155)	9
Other comprehensive income (loss), derivative, gain (loss), reclassification, before tax	(53)	(22)	(155)	9
Gain (loss) on hedges reclassified to income, net investment hedge	0	0	$ 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	(1)	(222)	$ (4)	(604)
Interest rate contracts | Net interest income
Derivative [Line Items]
Gain (loss) on hedges reclassified to income, cash flow hedge	(53)	(22)	(156)	3
Foreign exchange contracts
Derivative [Line Items]
Gain (loss) on derivative recognized in OCI, cash flow hedge	33	39	115	215
Gain (loss) on derivative recognized in OCI, net investment hedge	225	395	176	723
Foreign exchange contracts | Net interest income
Derivative [Line Items]
Gain (loss) on hedges reclassified to income, cash flow hedge	0	0	1	6
Foreign exchange contracts | Gain (Loss) on Investments
Derivative [Line Items]
Gain (loss) on hedges reclassified to income, net investment hedge	$ 0	$ 0	$ 0	$ 0

Offsetting Arrangements - Narra

Offsetting Arrangements - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Offsetting [Abstract]
Fair value of securities received as collateral that can be resold or repledged	$ 10,380	$ 8,140
Fair value of securities received as collateral that have been resold or repledged	$ 6,180	$ 3,630

Offsetting Arrangements - Asset

Offsetting Arrangements - Assets With Offsetting Arrangements (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Offsetting Assets [Line Items]
Derivatives, gross amounts of recognized assets	$ 20,609	$ 26,186
Derivatives, gross amounts offset in statement of condition	(12,805)	(18,522)
Derivatives, net amounts of assets presented in statement of condition	7,804	7,664
Derivatives, net amount	6,984	5,947
Derivatives, cash collateral and securities netting, cash offset	(1,799)	(3,298)
Derivatives, cash collateral and securities netting, cash and securities received	(820)	(1,717)
Derivatives, cash collateral and securities netting, net amount	(2,619)	(5,015)
Resale agreements and securities borrowing, gross amounts of recognized assets	213,229	125,797
Resale agreements and securities borrowing, gross amounts offset in statement of condition	(187,348)	(104,093)
Resale agreements and securities borrowing, net amounts of assets presented in statement of condition	25,881	21,704
Resale agreements and securities borrowing, cash and securities received	(24,436)	(20,960)
Resale agreements and securities borrowing, net amount	1,445	744
Total derivatives and other financial instruments, gross amounts of recognized assets	233,838	151,983
Total derivatives and other financial instruments, gross amounts offset in statement of condition	(200,153)	(122,615)
Total derivatives and other financial instruments, net amounts of assets presented in statement of condition	33,685	29,368
Total derivatives and other financial instruments, cash and securities received	(25,256)	(22,677)
Total derivatives and other financial instruments, net amount	8,429	6,691
Securities purchased under resale agreements	1,816	5,215
Cash collateral provided for securities borrowing	24,060	16,490
Foreign exchange contracts
Offsetting Assets [Line Items]
Derivatives, gross amounts of recognized assets	20,608	26,186
Derivatives, gross amounts offset in statement of condition	(11,006)	(15,224)
Derivatives, net amounts of assets presented in statement of condition	9,602	10,962
Derivatives, net amount	9,602	10,962
Interest rate contracts
Offsetting Assets [Line Items]
Derivatives, gross amounts of recognized assets	1	0
Derivatives, gross amounts offset in statement of condition	0	0
Derivatives, net amounts of assets presented in statement of condition	1	0
Derivatives, net amount	$ 1	$ 0

Offsetting Arrangements - Liabi

Offsetting Arrangements - Liabilities With Offsetting Arrangements (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Offsetting Liabilities [Line Items]
Derivatives, gross amounts of recognized liabilities	$ 20,303	$ 25,966
Derivatives, gross amounts offset in statement of condition	(15,021)	(17,951)
Net Amounts of Liabilities Presented in Statement of Condition	5,282	8,015
Derivative, net amount	4,201	7,107
Derivative liability, collateral, cash offset	(4,015)	(2,727)
Derivatives, cash and collateral securities netting, cash and securities provided	(1,081)	(908)
Derivatives, cash and collateral securities netting, net	(5,096)	(3,635)
Resale agreements and securities lending, gross amounts of recognized liabilities	203,469	111,653
Resale agreements and securities lending, gross amounts offset in statement of condition	(187,348)	(104,093)
Resale agreements and securities lending, net amounts of liabilities presented in statement of condition	16,121	7,560
Resale agreements and securities lending, cash and securities provided	(15,790)	(6,433)
Resale agreements and securities lending, net amount	331	1,127
Total derivatives and other financial instruments, gross amounts of recognized liabilities	223,772	137,619
Total derivatives and other financial instruments, gross amounts offset in statement of condition	(202,369)	(122,044)
Total derivatives and other financial instruments, net amounts of liabilities presented in statement of condition	21,403	15,575
Total derivatives and other financial instruments, cash and securities provided	(16,871)	(7,341)
Total derivatives and other financial instruments, net amount	4,532	8,234
Securities sold under repurchase agreements	3,097	1,177
Foreign exchange contracts
Offsetting Liabilities [Line Items]
Derivatives, gross amounts of recognized liabilities	20,106	25,749
Derivatives, gross amounts offset in statement of condition	(11,006)	(15,224)
Net Amounts of Liabilities Presented in Statement of Condition	9,100	10,525
Derivative, net amount	9,100	10,525
Interest rate contracts
Offsetting Liabilities [Line Items]
Derivatives, gross amounts of recognized liabilities	1	1
Derivatives, gross amounts offset in statement of condition	0	0
Net Amounts of Liabilities Presented in Statement of Condition	1	1
Derivative, net amount	1	1
Other derivative contracts
Offsetting Liabilities [Line Items]
Derivatives, gross amounts of recognized liabilities	196	216
Derivatives, gross amounts offset in statement of condition	0	0
Net Amounts of Liabilities Presented in Statement of Condition	196	216
Derivative, net amount	196	216
Accrued expenses and other liabilities
Offsetting Liabilities [Line Items]
Cash collateral received in connection to securities finance activities	$ 13,020	$ 6,380

Offsetting Arrangements - Repo,

Offsetting Arrangements - Repo, Sec Lending Transactions Maturity by Category (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	$ 187,002	$ 101,801
Securities lending transactions	16,467	9,852
Gross amount of recognized liabilities for repurchase agreements and securities lending	203,469	111,653
U.S. Treasury and agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	187,002	101,099
Securities lending transactions	8	44
Non-U.S. sovereign debt
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	0	702
Corporate debt securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	156	67
Equity securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	9,434	6,115
Other
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	6,869	3,626
Overnight and Continuous
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	186,824	101,601
Securities lending transactions	14,524	8,246
Gross amount of recognized liabilities for repurchase agreements and securities lending	201,348	109,847
Overnight and Continuous | U.S. Treasury and agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	186,824	100,899
Securities lending transactions	8	44
Overnight and Continuous | Non-U.S. sovereign debt
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	0	702
Overnight and Continuous | Corporate debt securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	144	67
Overnight and Continuous | Equity securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	7,503	4,509
Overnight and Continuous | Other
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	6,869	3,626
Up to 30 Days
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	0	0
Securities lending transactions	15	0
Gross amount of recognized liabilities for repurchase agreements and securities lending	15	0
Up to 30 Days | U.S. Treasury and agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	0	0
Securities lending transactions	0	0
Up to 30 Days | Non-U.S. sovereign debt
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	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	15	0
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	178	200
Securities lending transactions	32	0
Gross amount of recognized liabilities for repurchase agreements and securities lending	210	200
30-90 days | U.S. Treasury and agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	178	200
Securities lending transactions	0	0
30-90 days | Non-U.S. sovereign debt
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	0	0
30-90 days | Corporate debt securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	12	0
30-90 days | Equity securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities lending transactions	20	0
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	0	0
Securities lending transactions	1,896	1,606
Gross amount of recognized liabilities for repurchase agreements and securities lending	1,896	1,606
Greater than 90 Days | U.S. Treasury and agency securities
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	0	0
Securities lending transactions	0	0
Greater than 90 Days | Non-U.S. sovereign debt
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase agreements	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	1,896	1,606
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	Sep. 30, 2023	Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Unfunded credit facilities	$ 34,149	$ 31,208
Indemnified securities financing	269,180	348,924
Standby letters of credit	$ 1,527	$ 2,125

Commitments and Guarantees - Sc

Commitments and Guarantees - Schedule of Repurchase Agreements (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Fair value of indemnified securities financing	$ 269,180	$ 348,924
Fair value of cash and securities held by us, as agent, as collateral for indemnified securities financing	281,856	366,895
Fair value of collateral for indemnified securities financing invested in indemnified repurchase agreements	58,722	54,114
Fair value of cash and securities held by us or our agents as collateral for investments in indemnified repurchase agreements	$ 63,263	$ 57,903

Commitments and Guarantees - Na

Commitments and Guarantees - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Loss Contingencies [Line Items]
Unfunded commitments to extend credit, short term	76%	77%
Term of unfunded commitment	1 year
Cash collateral provided for securities lending	$ 24,060	$ 16,490
Accrued expenses and other liabilities
Loss Contingencies [Line Items]
Cash collateral received in connection to securities finance activities	$ 13,020	$ 6,380

Contingencies (Details)

Contingencies (Details) $ in Millions	1 Months Ended
	Aug. 31, 2021 plaintiff	May 31, 2021 USD ($) participant	Jun. 30, 2019 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Loss Contingencies [Line Items]
Accrual of loss contingency				$ 17
Estimate of possible loss				70
Participants who filed a purported class action complaint | participant		8
Unrecognized tax benefits				204	$ 285
Invoicing Matter
Loss Contingencies [Line Items]
Payments for settlements			$ 48.8
Invoicing Matter | United States Attorney for the District of Massachusetts
Loss Contingencies [Line Items]
Amount awarded to other party		$ 115
Invoicing Matter | Massachusetts Attorney General
Loss Contingencies [Line Items]
Amount awarded to other party			5.5
Invoicing Matter | U.S. Securities and Exchange Commission
Loss Contingencies [Line Items]
Amount awarded to other party			$ 40
Edmar v Currenex
Loss Contingencies [Line Items]
Loss contingency, number of plaintiffs | plaintiff	2
Legal Reserve | Invoicing Matter
Loss Contingencies [Line Items]
Estimate of possible loss				$ 350

Variable Interest Entities - Na

Variable Interest Entities - Narrative (Details) - USD ($)	Sep. 30, 2023	Dec. 31, 2022
Variable Interest Entity [Line Items]
Assets	$ 284,415,000,000	$ 301,450,000,000
Total liabilities	260,794,000,000	276,259,000,000
Contingent Commitment For Tax Credit Investments
Variable Interest Entity [Line Items]
Other commitment	48,000,000
Low Income Housing Tax Credit
Variable Interest Entity [Line Items]
Investment owned	841,000,000
Production Tax Credit
Variable Interest Entity [Line Items]
Investment owned	301,000,000
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	16,000,000	15,000,000
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	1,300,000,000	$ 1,600,000,000
Deferred contribution payments included in accrued expenses and other liabilities	$ 198,000,000

Variable Interest Entities - Ta

Variable Interest Entities - Tax Credits (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Variable Interest Entity [Line Items]
Total revenue	$ 2,691	$ 2,959	$ 8,902	$ 8,993
Income tax expense	89	$ 159	381	$ 397
VIE - not primary beneficiary | Low Income Housing, Production and Investment Tax Credit Entities
Variable Interest Entity [Line Items]
Total revenue	8		23
Tax credits and benefits recognized in income tax expense	68		202
Proportional amortization recognized in income tax expense	(52)		(156)
Income tax expense	16		46
Net benefit attributable to tax-advantaged investments included in the consolidated statement of income	$ 24		$ 69

Shareholders' Equity - Schedule

Shareholders' Equity - Schedule of Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Millions			1 Months Ended
	Mar. 15, 2024	Jun. 15, 2022	Sep. 30, 2018	Apr. 30, 2016	May 31, 2015	Feb. 28, 2014	Sep. 30, 2023	Dec. 31, 2022
SOFR
Class of Stock [Line Items]
Basis spread, variable rate							0.26161%
Series D Preferred Stock, Depository Share
Class of Stock [Line Items]
Depositary shares issued (shares)						30,000,000
Amount outstanding (in shares)						750,000,000
Liquidation preference per share (USD per share)						$ 25
Series D Preferred Stock
Class of Stock [Line Items]
Liquidation preference per share (USD per share)						$ 100,000
Per annum dividend rate						5.90%
Preferred stock							$ 742	$ 742
Series D Preferred Stock | LIBOR | Forecast
Class of Stock [Line Items]
Per annum dividend rate, basis spread on variable rate	9.008%
Series F Preferred Stock, Depository Share
Class of Stock [Line Items]
Depositary shares issued (shares)					250,000
Amount outstanding (in shares)					250,000,000
Liquidation preference per share (USD per share)					$ 1,000
Series F Preferred Stock
Class of Stock [Line Items]
Liquidation preference per share (USD per share)					$ 100,000
Preferred stock							247	247
Series F Preferred Stock | SOFR
Class of Stock [Line Items]
Per annum dividend rate, basis spread on variable rate		9.268%			3.859%
Series G Preferred Stock, Depository Share
Class of Stock [Line Items]
Depositary shares 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]
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]
Depositary shares 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]
Liquidation preference per share (USD per share)			$ 100,000
Per annum dividend rate			5.625%
Preferred stock							$ 494	$ 494
Series H Preferred Stock | LIBOR
Class of Stock [Line Items]
Per annum dividend rate, basis spread on variable rate			2.801%

Shareholders' Equity - Preferre

Shareholders' Equity - Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended				3 Months Ended						9 Months Ended
	Sep. 30, 2018	Apr. 30, 2016	May 31, 2015	Feb. 28, 2014	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Class of Stock [Line Items]
Preferred stock cash dividend					$ 24	$ 37	$ 23	$ 21	$ 35	$ 20	$ 84	$ 76
Series D Preferred Stock
Class of Stock [Line Items]
Preferred dividends declared (USD per share)					$ 1,475			$ 1,475			$ 4,425	$ 4,425
Preferred stock cash dividend					$ 11			$ 11			$ 33	$ 33
Ownership Interest Per Depositary Share				0.025%
Series D Preferred Stock, Depository Share
Class of Stock [Line Items]
Preferred dividends declared (USD per share)					$ 0.37			$ 0.37			$ 1.11	$ 1.11
Series F Preferred Stock
Class of Stock [Line Items]
Preferred dividends declared (USD per share)					$ 2,338			$ 1,387			$ 6,592	$ 3,467
Preferred stock cash dividend					$ 6			$ 3			$ 17	$ 9
Ownership Interest Per Depositary Share			1%
Series F Preferred Stock, Depository Share
Class of Stock [Line Items]
Preferred dividends declared (USD per share)					$ 23.38			$ 13.87			$ 65.92	$ 34.67
Series G Preferred Stock
Class of Stock [Line Items]
Preferred dividends declared (USD per share)					$ 1,338			$ 1,338			$ 4,013	$ 4,014
Preferred stock cash dividend					$ 7			$ 7			$ 20	$ 20
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			$ 1	$ 0.99
Series H Preferred Stock
Class of Stock [Line Items]
Preferred dividends declared (USD per share)											$ 2,813	$ 2,813
Preferred stock cash dividend											$ 14	$ 14
Ownership Interest Per Depositary Share	1%
Series H Preferred Stock, Depository Share
Class of Stock [Line Items]
Preferred dividends declared (USD per share)											$ 28.13	$ 28.13

Shareholders' Equity - Narrativ

Shareholders' Equity - Narrative (Details) - 2023 Share Repurchase Program - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2023	Jan. 31, 2023
Class of Stock [Line Items]
Amount of common stock authorized for repurchase		$ 4,500
Total common stock repurchased	$ 1,000

Shareholders' Equity - Schedu_2

Shareholders' Equity - Schedule of Common Stock (Details) - Share repurchase program - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Equity, Class of Treasury Stock [Line Items]
Common stock acquired (shares)	13,800	42,300
Average cost per share (USD per share)	$ 72.23	$ 78.08
Total common stock repurchased	$ 1,000	$ 3,300

Shareholders' Equity - Schedu_3

Shareholders' Equity - Schedule of Dividends Declared (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Equity [Abstract]
Cash dividends declared (in USD per share)	$ 0.69	$ 0.63	$ 0.63	$ 0.63	$ 0.57	$ 0.57	$ 1.95	$ 1.77
Total (In millions)	$ 213	$ 203	$ 212	$ 232	$ 210	$ 209	$ 628	$ 651

Shareholders' Equity - Accumula

Shareholders' Equity - Accumulated Other Comprehensive Income by Component (Details) - USD ($) $ in Millions	3 Months Ended						9 Months Ended		12 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 24,204	$ 24,750	$ 25,191	$ 25,767	$ 26,224	$ 27,363	$ 25,191	$ 27,363	$ 27,363
Other comprehensive income (loss) before reclassifications							163	(3,232)
Increase (decrease) due to amounts reclassified from accumulated other comprehensive income							503	97
Other comprehensive income (loss)	213	14	439	(581)	(989)	(1,565)	666	(3,135)
Ending balance	23,621	24,204	24,750	25,648	25,767	26,224	23,621	25,648	25,191
AFS transferred to HTM							(578)		(749)
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(3,258)	(3,272)	(3,711)	(3,687)	(2,698)	(1,133)	(3,711)	(1,133)	(1,133)
Other comprehensive income (loss)	213	14	439	(581)	(989)	(1,565)
Ending balance	(3,045)	$ (3,258)	(3,272)	(4,268)	$ (3,687)	(2,698)	(3,045)	(4,268)	(3,711)
Net Unrealized Gains (Losses) on Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(359)			(2)	(359)	(2)	(2)
Other comprehensive income (loss) before reclassifications							83	(344)
Increase (decrease) due to amounts reclassified from accumulated other comprehensive income							113	(6)
Other comprehensive income (loss)							196	(350)
Ending balance	(163)			(352)			(163)	(352)	(359)
Net Unrealized Gains (Losses) on Investment Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(1,817)			(50)	(1,817)	(50)	(50)
Other comprehensive income (loss) before reclassifications							49	(2,041)
Increase (decrease) due to amounts reclassified from accumulated other comprehensive income							378	84
Other comprehensive income (loss)							427	(1,957)
Ending balance	(1,390)			(2,007)			(1,390)	(2,007)	(1,817)
Net Unrealized Losses on Retirement Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(143)			(130)	(143)	(130)	(130)
Other comprehensive income (loss) before reclassifications							0	(1)
Increase (decrease) due to amounts reclassified from accumulated other comprehensive income							12	19
Other comprehensive income (loss)							12	18
Ending balance	(131)			(112)			(131)	(112)	(143)
Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(1,751)			(1,019)	(1,751)	(1,019)	(1,019)
Other comprehensive income (loss) before reclassifications							(145)	(1,569)
Increase (decrease) due to amounts reclassified from accumulated other comprehensive income							0	0
Other comprehensive income (loss)							(145)	(1,569)
Ending balance	(1,896)			(2,588)			(1,896)	(2,588)	(1,751)
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			$ 359			$ 68	359	68	68
Other comprehensive income (loss) before reclassifications							176	723
Increase (decrease) due to amounts reclassified from accumulated other comprehensive income							0	0
Other comprehensive income (loss)							176	723
Ending balance	$ 535			$ 791			$ 535	$ 791	$ 359

Shareholders' Equity - Adjustme

Shareholders' Equity - Adjustments to Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Class of Stock [Line Items]
Gains (losses) from sales of available-for-sale securities, net	$ (294)			$ 0			$ (294)	$ (2)
Net interest income	(624)			(660)			(2,081)	(1,753)
Compensation and employee benefits expenses	1,082			1,042			3,497	3,320
Total amounts reclassified from accumulated other comprehensive income	(422)	$ (763)	$ (549)	(690)	$ (747)	$ (604)	(1,734)	(2,041)
Other comprehensive income (loss), reclassification adjustment from AOCI for sale of securities, tax	81			81			0	1
Other comprehensive income (loss), reclassified losses into net income, tax	22			31			61	22
Other comprehensive income (loss), cash flow hedge, gain (loss), reclassification, tax	14			6			42	(3)
Other comprehensive (income) loss, actuarial losses, tax	0			1			5	8
Amounts Reclassified into Earnings
Class of Stock [Line Items]
Gains (losses) from sales of available-for-sale securities, net	213			0			213	1
Total amounts reclassified from accumulated other comprehensive income	311			78			503	97
Amounts Reclassified into Earnings | Net Unrealized Gains (Losses) on Investment Securities
Class of Stock [Line Items]
Net interest income	(59)			(60)			(165)	(83)
Amounts Reclassified into Earnings | Net Unrealized Gains (Losses) on Cash Flow Hedges
Class of Stock [Line Items]
Net interest income	39			16			(113)	6
Amounts Reclassified into Earnings | Amortization of Actuarial Losses
Class of Stock [Line Items]
Compensation and employee benefits expenses	$ 0			$ 2			$ 12	$ 19

Regulatory Capital (Details)

Regulatory Capital (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Retained earnings	$ 27,993	$ 27,028
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	$ 11,239	$ 11,234
Retained earnings	27,993	27,028
Accumulated other comprehensive income (loss)	(3,045)	(3,711)
Treasury stock, at cost	(14,542)	(11,336)
Total	21,645	23,215
Goodwill and other intangible assets, net of associated deferred tax liabilities	(8,352)	(8,545)
Other adjustments	(289)	(123)
Common equity tier 1 capital	13,004	14,547
Preferred stock	1,976	1,976
Tier 1 capital	14,980	16,523
Qualifying subordinated long-term debt	1,374	1,376
Allowance for credit losses	3	0
Total capital	16,357	17,899
Credit risk	62,206	61,108
Operational risk	42,677	42,763
Market risk	1,963	1,488
Total risk-weighted assets	106,846	105,359
Adjusted quarterly average assets	$ 259,086	$ 275,678
Common equity tier 1 capital	12.20%	13.80%
Tier 1 capital	0.140	0.157
Total capital	0.153	0.170
Tier 1 leverage capital ratio, actual	0.058	0.060
Basel III Standardized Approach
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common stock and related surplus	$ 11,239	$ 11,234
Retained earnings	27,993	27,028
Accumulated other comprehensive income (loss)	(3,045)	(3,711)
Treasury stock, at cost	(14,542)	(11,336)
Total	21,645	23,215
Goodwill and other intangible assets, net of associated deferred tax liabilities	(8,352)	(8,545)
Other adjustments	(289)	(123)
Common equity tier 1 capital	13,004	14,547
Preferred stock	1,976	1,976
Tier 1 capital	14,980	16,523
Qualifying subordinated long-term debt	1,374	1,376
Allowance for credit losses	134	120
Total capital	16,488	18,019
Credit risk	116,045	105,739
Market risk	1,963	1,488
Total risk-weighted assets	118,008	107,227
Adjusted quarterly average assets	$ 259,086	$ 275,678
Common equity tier 1 capital	11%	13.60%
Tier 1 capital	0.127	0.154
Total capital	0.140	0.168
Tier 1 leverage capital ratio, actual	0.058	0.060
State Street Bank | Basel III Advanced Approaches
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common stock and related surplus	$ 13,033	$ 13,033
Retained earnings	15,407	16,975
Accumulated other comprehensive income (loss)	(2,756)	(3,428)
Treasury stock, at cost	0	0
Total	25,684	26,580
Goodwill and other intangible assets, net of associated deferred tax liabilities	(8,096)	(8,288)
Other adjustments	(206)	(19)
Common equity tier 1 capital	17,382	18,273
Preferred stock	0	0
Tier 1 capital	17,382	18,273
Qualifying subordinated long-term debt	538	542
Allowance for credit losses	3	0
Total capital	17,923	18,815
Credit risk	56,273	54,675
Operational risk	42,299	42,325
Market risk	1,963	1,488
Total risk-weighted assets	100,535	98,488
Adjusted quarterly average assets	$ 256,408	$ 273,220
Common equity tier 1 capital	17.30%	18.60%
Tier 1 capital	0.173	0.186
Total capital	0.178	0.191
Tier 1 leverage capital ratio, actual	0.068	0.067
State Street Bank | Basel III Standardized Approach
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common stock and related surplus	$ 13,033	$ 13,033
Retained earnings	15,407	16,975
Accumulated other comprehensive income (loss)	(2,756)	(3,428)
Treasury stock, at cost	0	0
Total	25,684	26,580
Goodwill and other intangible assets, net of associated deferred tax liabilities	(8,096)	(8,288)
Other adjustments	(206)	(19)
Common equity tier 1 capital	17,382	18,273
Preferred stock	0	0
Tier 1 capital	17,382	18,273
Qualifying subordinated long-term debt	538	542
Allowance for credit losses	134	120
Total capital	18,054	18,935
Credit risk	114,662	104,184
Market risk	1,963	1,488
Total risk-weighted assets	116,625	105,672
Adjusted quarterly average assets	$ 256,408	$ 273,220
Common equity tier 1 capital	14.90%	17.30%
Tier 1 capital	0.149	0.173
Total capital	0.155	0.179
Tier 1 leverage capital ratio, actual	0.068	0.067

Net Interest Income (Details)

Net Interest Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Interest income:
Interest-bearing deposits with banks	$ 693	$ 202	$ 2,031	$ 281
Investment securities:
Investment securities available-for-sale	464	176	1,218	452
Investment securities held-to-maturity	314	271	954	672
Total investment securities	778	447	2,172	1,124
Securities purchased under resale agreements	65	57	223	105
Loans	492	256	1,330	627
Other interest-earning assets	300	139	831	189
Total interest income	2,328	1,101	6,587	2,326
Interest expense:
Interest-bearing deposits	1,332	300	3,479	260
Securities sold under repurchase agreements	6	2	28	5
Short-term borrowings	2	0	34	1
Long-term debt	241	97	635	234
Other interest-bearing liabilities	123	42	330	73
Interest expense	1,704	441	4,506	573
Net interest income	$ 624	$ 660	$ 2,081	$ 1,753

Expenses - Schedule of Expenses

Expenses - Schedule of Expenses (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Other Expenses [Abstract]
Professional services	$ 99	$ 92	$ 315	$ 273
Sales advertising and public relations	38	28	91	69
Regulatory fees and assessments	18	19	62	63
Securities processing	10	21	35	41
Bank operations	9	11	33	24
Donations	13	7	26	20
Other	98	96	279	289
Total other expenses	$ 285	$ 274	$ 841	$ 779

Expenses - Narrative (Details)

Expenses - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
BBH Investor Services
Restructuring Cost and Reserve [Line Items]
Acquisition costs	$ 0	$ 13,000,000	$ 0	$ 34,000,000

Expenses - Restructuring Reserv

Expenses - Restructuring Reserve (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022
Restructuring Reserve [Roll Forward]
Beginning balance	$ 56	$ 73	$ 88	$ 45	$ 56	$ 74
Payments and Other Adjustments	(14)	(17)	(15)	(5)	(11)	(18)
Ending balance	42	56	73	40	45	56
Employee Related Costs
Restructuring Reserve [Roll Forward]
Beginning balance	53	69	83	40	51	68
Payments and Other Adjustments	(12)	(16)	(14)	(5)	(11)	(17)
Ending balance	41	53	69	35	40	51
Real Estate Actions
Restructuring Reserve [Roll Forward]
Beginning balance	3	4	5	5	5	6
Payments and Other Adjustments	(2)	(1)	(1)	0	0	(1)
Ending balance	$ 1	$ 3	$ 4	$ 5	$ 5	$ 5

Earnings Per Common Share (Deta

Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share [Abstract]
Net income	$ 422	$ 763	$ 549	$ 690	$ 747	$ 604	$ 1,734	$ 2,041
Preferred stock dividends	(24)			(21)			(84)	(76)
Dividends and undistributed earnings allocated to participating securities	0			0			(1)	(1)
Net income available to common shareholders, basic	398			669			1,649	1,964
Net income available to common shareholders, diluted	$ 398			$ 669			$ 1,649	$ 1,964
Basic average common shares (in shares)	313,147			367,789			327,776	367,240
Effect of dilutive securities: equity-based awards (in shares)	4,182			4,629			4,235	4,954
Diluted average common shares (in shares)	317,329			372,418			332,011	372,194
Anti-dilutive securities (in shares)	1,683			1,592			1,368	904
Earnings per common share, basic:
Basic (in USD per share)	$ 1.27			$ 1.82			$ 5.03	$ 5.35
Earnings per common share, diluted:
Diluted (in USD per share)	$ 1.25			$ 1.80			$ 4.97	$ 5.28

Line of Business Information -

Line of Business Information - Narrative (Details) - 9 months ended Sep. 30, 2023	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		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting Information [Line Items]
Servicing fees	$ 1,234,000,000	$ 1,219,000,000	$ 3,710,000,000	$ 3,884,000,000
Management fees	479,000,000	472,000,000	1,397,000,000	1,482,000,000
Foreign exchange trading services	313,000,000	319,000,000	958,000,000	1,009,000,000
Securities finance	103,000,000	110,000,000	329,000,000	313,000,000
Software and processing fees	188,000,000	184,000,000	574,000,000	573,000,000
Other fee revenue	44,000,000	(5,000,000)	147,000,000	(19,000,000)
Total fee revenue	2,361,000,000	2,299,000,000	7,115,000,000	7,242,000,000
Net interest income	624,000,000	660,000,000	2,081,000,000	1,753,000,000
Total other income	(294,000,000)	0	(294,000,000)	(2,000,000)
Total revenue	2,691,000,000	2,959,000,000	8,902,000,000	8,993,000,000
Provision for credit losses	0	0	26,000,000	10,000,000
Total expenses	2,180,000,000	2,110,000,000	6,761,000,000	6,545,000,000
Income before income tax expense	$ 511,000,000	$ 849,000,000	$ 2,115,000,000	$ 2,438,000,000
Pre-tax margin	19%	29%	24%	27%
Operating Segments | Investment Servicing
Segment Reporting Information [Line Items]
Servicing fees	$ 1,234,000,000	$ 1,219,000,000	$ 3,710,000,000	$ 3,884,000,000
Management fees	0	0	0	0
Foreign exchange trading services	278,000,000	293,000,000	875,000,000	948,000,000
Securities finance	98,000,000	105,000,000	310,000,000	300,000,000
Software and processing fees	188,000,000	184,000,000	574,000,000	573,000,000
Other fee revenue	41,000,000	12,000,000	124,000,000	46,000,000
Total fee revenue	1,839,000,000	1,813,000,000	5,593,000,000	5,751,000,000
Net interest income	620,000,000	663,000,000	2,069,000,000	1,760,000,000
Total other income	0	0	0	(2,000,000)
Total revenue	2,459,000,000	2,476,000,000	7,662,000,000	7,509,000,000
Provision for credit losses	0	0	26,000,000	10,000,000
Total expenses	1,798,000,000	1,760,000,000	5,626,000,000	5,452,000,000
Income before income tax expense	$ 661,000,000	$ 716,000,000	$ 2,010,000,000	$ 2,047,000,000
Pre-tax margin	27%	29%	26%	27%
Operating Segments | Investment Management
Segment Reporting Information [Line Items]
Servicing fees	$ 0	$ 0	$ 0	$ 0
Management fees	479,000,000	472,000,000	1,397,000,000	1,482,000,000
Foreign exchange trading services	35,000,000	26,000,000	83,000,000	61,000,000
Securities finance	5,000,000	5,000,000	19,000,000	13,000,000
Software and processing fees	0	0	0	0
Other fee revenue	3,000,000	(17,000,000)	23,000,000	(65,000,000)
Total fee revenue	522,000,000	486,000,000	1,522,000,000	1,491,000,000
Net interest income	4,000,000	(3,000,000)	12,000,000	(7,000,000)
Total other income	0	0	0	0
Total revenue	526,000,000	483,000,000	1,534,000,000	1,484,000,000
Provision for credit losses	0	0	0	0
Total expenses	379,000,000	335,000,000	1,126,000,000	1,051,000,000
Income before income tax expense	$ 147,000,000	$ 148,000,000	$ 408,000,000	$ 433,000,000
Pre-tax margin	28%	31%	27%	29%
Other
Segment Reporting Information [Line Items]
Servicing fees	$ 0	$ 0	$ 0	$ 0
Management fees	0	0	0	0
Foreign exchange trading services	0	0	0	0
Securities finance	0	0	0	0
Software and processing fees	0	0	0	0
Other fee revenue	0	0		0
Total fee revenue	0	0	0	0
Net interest income	0	0	0	0
Total other income	(294,000,000)	0	(294,000,000)	0
Total revenue	(294,000,000)	0	(294,000,000)	0
Provision for credit losses	0	0	0	0
Total expenses	3,000,000	15,000,000	9,000,000	42,000,000
Income before income tax expense	$ (297,000,000)	$ (15,000,000)	$ (303,000,000)	$ (42,000,000)

Revenue from Contracts with C_3

Revenue from Contracts with Customers - Narrative (Details) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2023 USD ($) segment	Sep. 30, 2023 USD ($) line_of_business	Sep. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of lines of business		2	2
Deferred revenue	$ 135	$ 135	$ 135	$ 135	$ 150	$ 138
Amount of deferred revenue recognized	$ 64			$ 103
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-10-01
Accounts, Notes, Loans and Financing Receivable [Line Items]
Revenue, remaining performance obligation, percentage	50%	50%	50%	50%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-10-01 | Software License Sales & SaaS
Accounts, Notes, Loans and Financing Receivable [Line Items]
Remaining performance obligation	$ 1,500	$ 1,500	$ 1,500	$ 1,500
Revenue, remaining performance obligation, expected timing of satisfaction, period (in years)	3 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	$ 2,870	$ 2,870	$ 2,870	$ 2,870		$ 2,630

Revenue from Contracts with C_4

Revenue from Contracts with Customers - Disaggregation of Revenues (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Servicing fees	$ 1,234	$ 1,219	$ 3,710	$ 3,884
Management fees	479	472	1,397	1,482
Foreign exchange trading services	313	319	958	1,009
Securities finance	103	110	329	313
Software and processing fees	188	184	574	573
Other fee revenue	44	(5)	147	(19)
Total fee revenue	2,361	2,299	7,115	7,242
Net interest income	624	660	2,081	1,753
Total other income	(294)	0	(294)	(2)
Total revenue	2,691	2,959	8,902	8,993
Operating Segments | Investment Servicing
Disaggregation of Revenue [Line Items]
Topic 606 revenue	1,513	1,505	4,583	4,765
All other revenue	946	971	3,079	2,744
Servicing fees	1,234	1,219	3,710	3,884
Management fees	0	0	0	0
Foreign exchange trading services	278	293	875	948
Securities finance	98	105	310	300
Software and processing fees	188	184	574	573
Other fee revenue	41	12	124	46
Total fee revenue	1,839	1,813	5,593	5,751
Net interest income	620	663	2,069	1,760
Total other income	0	0	0	(2)
Total revenue	2,459	2,476	7,662	7,509
Operating Segments | Investment Servicing | Servicing fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	1,234	1,219	3,710	3,884
All other revenue	0	0	0	0
Servicing fees	1,234	1,219	3,710	3,884
Operating Segments | Investment Servicing | Management fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0	0
All other revenue	0	0	0	0
Management fees	0	0	0	0
Operating Segments | Investment Servicing | Foreign exchange trading services
Disaggregation of Revenue [Line Items]
Topic 606 revenue	84	88	260	279
All other revenue	194	205	615	669
Foreign exchange trading services	278	293	875	948
Operating Segments | Investment Servicing | Securities finance
Disaggregation of Revenue [Line Items]
Topic 606 revenue	53	60	177	175
All other revenue	45	45	133	125
Securities finance	98	105	310	300
Operating Segments | Investment Servicing | Software and processing fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	142	138	436	427
All other revenue	46	46	138	146
Software and processing fees	188	184	574	573
Operating Segments | Investment Servicing | Other fee revenue
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0	0
All other revenue	41	12	124	46
Other fee revenue	41	12	124	46
Operating Segments | Investment Servicing | Total fee revenue
Disaggregation of Revenue [Line Items]
Topic 606 revenue	1,513	1,505	4,583	4,765
All other revenue	326	308	1,010	986
Total fee revenue	1,839	1,813	5,593	5,751
Operating Segments | Investment Servicing | Net interest income
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0	0
All other revenue	620	663	2,069	1,760
Net interest income	620	663	2,069	1,760
Operating Segments | Investment Servicing | Total other income
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0	0
All other revenue	0	0	0	(2)
Total other income	0	0	0	(2)
Operating Segments | Investment Management
Disaggregation of Revenue [Line Items]
Topic 606 revenue	514	498	1,480	1,543
All other revenue	12	(15)	54	(59)
Servicing fees	0	0	0	0
Management fees	479	472	1,397	1,482
Foreign exchange trading services	35	26	83	61
Securities finance	5	5	19	13
Software and processing fees	0	0	0	0
Other fee revenue	3	(17)	23	(65)
Total fee revenue	522	486	1,522	1,491
Net interest income	4	(3)	12	(7)
Total other income	0	0	0	0
Total revenue	526	483	1,534	1,484
Operating Segments | Investment Management | Servicing fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0	0
All other revenue	0	0	0	0
Servicing fees	0	0	0	0
Operating Segments | Investment Management | Management fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	479	472	1,397	1,482
All other revenue	0	0	0	0
Management fees	479	472	1,397	1,482
Operating Segments | Investment Management | Foreign exchange trading services
Disaggregation of Revenue [Line Items]
Topic 606 revenue	35	26	83	61
All other revenue	0	0	0	0
Foreign exchange trading services	35	26	83	61
Operating Segments | Investment Management | Securities finance
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0	0
All other revenue	5	5	19	13
Securities finance	5	5	19	13
Operating Segments | Investment Management | Software and processing fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0	0
All other revenue	0	0	0	0
Software and processing fees	0	0	0	0
Operating Segments | Investment Management | Other fee revenue
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0	0
All other revenue	3	(17)	23	(65)
Other fee revenue	3	(17)	23	(65)
Operating Segments | Investment Management | Total fee revenue
Disaggregation of Revenue [Line Items]
Topic 606 revenue	514	498	1,480	1,543
All other revenue	8	(12)	42	(52)
Total fee revenue	522	486	1,522	1,491
Operating Segments | Investment Management | Net interest income
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0	0
All other revenue	4	(3)	12	(7)
Net interest income	4	(3)	12	(7)
Operating Segments | Investment Management | Total other income
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0	0
All other revenue	0	0	0	0
Total other income	0	0	0	0
Other
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0	0
All other revenue	(294)	0	(294)	0
Servicing fees	0	0	0	0
Management fees	0	0	0	0
Foreign exchange trading services	0	0	0	0
Securities finance	0	0	0	0
Software and processing fees	0	0	0	0
Other fee revenue	0	0		0
Total fee revenue	0	0	0	0
Net interest income	0	0	0	0
Total other income	(294)	0	(294)	0
Total revenue	(294)	0	(294)	0
Other | Servicing fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0	0
All other revenue	0	0	0	0
Servicing fees	0	0	0	0
Other | Management fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0	0
All other revenue	0	0	0	0
Management fees	0	0	0	0
Other | Foreign exchange trading services
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0	0
All other revenue	0	0	0	0
Foreign exchange trading services	0	0	0	0
Other | Securities finance
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0	0
All other revenue	0	0	0	0
Securities finance	0	0	0	0
Other | Software and processing fees
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0	0
All other revenue	0	0	0	0
Software and processing fees	0	0	0	0
Other | Other fee revenue
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0	0
All other revenue	0	0	0	0
Other fee revenue	0	0	0	0
Other | Total fee revenue
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0	0
All other revenue	0	0	0	0
Total fee revenue	0	0	0	0
Other | Net interest income
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0	0
All other revenue	0	0	0	0
Net interest income	0	0	0	0
Other | Total other income
Disaggregation of Revenue [Line Items]
Topic 606 revenue	0	0	0	0
All other revenue	(294)	0	(294)	0
Total other income	$ (294)	$ 0	$ (294)	$ 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		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting Information [Line Items]
Total revenue	$ 2,691	$ 2,959	$ 8,902	$ 8,993
Income before income tax expense	511	849	2,115	2,438
Non-U.S.
Segment Reporting Information [Line Items]
Total revenue	1,081	1,232	3,777	3,912
Income before income tax expense	130	333	819	1,089
U.S.
Segment Reporting Information [Line Items]
Total revenue	1,610	1,727	5,125	5,081
Income before income tax expense	$ 381	$ 516	$ 1,296	$ 1,349

Non-U.S. Activities - Narrative

Non-U.S. Activities - Narrative (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Segment Reporting Information [Line Items]
Total assets	$ 284,415		$ 284,415		$ 301,450
Non-U.S.
Segment Reporting Information [Line Items]
Management fees, percent	0.25	0.25	0.26	0.26
Service fees, percent	0.47	0.45	0.46	0.46
Total assets	$ 80,750	$ 91,230	$ 80,750	$ 91,230