The Bank of New York Mellon Corporation (BK) 10-Q 3 May 24 2024 Q1 Quarterly report Financial data

Cover

Cover	3 Months Ended
	Mar. 31, 2024 shares
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2024
Document Transition Report	false
Entity File Number	001-35651
Entity Registrant Name	THE BANK OF NEW YORK MELLON CORPORATION
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	13-2614959
Entity Address, Address Line One	240 Greenwich Street
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10286
City Area Code	212
Local Phone Number	495-1784
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 (shares)	747,815,835
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Entity Central Index Key	0001390777
Current Fiscal Year End Date	--12-31
Common Stock, $0.01 par value
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	BK
Security Exchange Name	NYSE
6.244% Fixed-to-Floating Rate Normal Preferred Capital Securities of Mellon Capital IV
Entity Information [Line Items]
Title of 12(b) Security	6.244% Fixed-to-Floating Rate Normal Preferred Capital Securities of Mellon Capital IV
Trading Symbol	BK/P
Security Exchange Name	NYSE

Consolidated Income Statement (

Consolidated Income Statement (unaudited) - USD ($) shares in Thousands, $ in Millions		3 Months Ended
		Mar. 31, 2024		Dec. 31, 2023	Mar. 31, 2023
Fee and other revenue
Investment services fees		$ 2,278		$ 2,242	$ 2,119
Investment management and performance fees		776		743	776
Foreign exchange revenue		152		143	176
Financing-related fees		57		45	52
Distribution and servicing fees		42		41	33
Total fee revenue		3,305		3,214	3,156
Investment and other revenue	[1]	182		43	131
Total fee and other revenue	[1]	3,487		3,257	3,287
Net interest income
Interest income		6,096		5,963	3,942
Interest expense		5,056		4,862	2,814
Net interest income		1,040		1,101	1,128
Total revenue		4,527		4,358	4,415
Provision for credit losses		27		84	27
Noninterest expense
Staff		1,857		1,831	1,791
Software and equipment		475		486	429
Professional, legal and other purchased services		349		406	375
Net occupancy		124		162	119
Sub-custodian and clearing		119		117	118
Distribution and servicing		96		88	85
Business development		36		61	39
Bank assessment charges		17		670	40
Amortization of intangible assets		12		14	14
Other		91		160	90
Total noninterest expense		3,176		3,995	3,100
Income
Income before income taxes	[1]	1,324		279	1,288
Provision for income taxes	[1]	297		73	306
Net income	[1],[3]	1,027	[2]	206	982	[2]
Net (income) loss attributable to noncontrolling interests related to consolidated investment management funds		(2)		2	0
Net income applicable to shareholders of The Bank of New York Mellon Corporation		1,025	[2]	208	982	[2]
Preferred stock dividends		(72)		(46)	(71)
Net income applicable to common shareholders of The Bank of New York Mellon Corporation		953		162	911
Net income applicable to common shareholders of The Bank of New York Mellon Corporation used for the earnings per share calculation
Net income applicable to common shareholders of The Bank of New York Mellon Corporation		953		162	911
Less: Earnings allocated to participating securities, basic		0		0	0
Less: Earnings allocated to participating securities, diluted		0		0	0
Net income applicable to common shareholders of The Bank of New York Mellon Corporation after required adjustment for the calculation of basic earnings per common share		953		162	911
Net income applicable to common shareholders of The Bank of New York Mellon Corporation after required adjustment for the calculation of diluted earnings per common share		$ 953		$ 162	$ 911
Average common shares and equivalents outstanding of The Bank of New York Mellon Corporation
Basic (shares)		756,937		767,146	803,340
Common stock equivalents (shares)		5,331		5,045	4,473
Less: Participating securities (shares)		0		(89)	(95)
Diluted (shares)		762,268		772,102	807,718
Anti-dilutive securities (shares)	[4]	1,604		110	4,872
Earnings per share applicable to common shareholders of The Bank of New York Mellon Corporation
Basic (usd per share)	[5]	$ 1.26		$ 0.21	$ 1.13
Diluted (usd per share)	[5]	$ 1.25		$ 0.21	$ 1.13
[1]Prior periods were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information[2]Prior period was restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.[3]Prior periods were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.[4]Represents restricted stock, restricted stock units and participating securities outstanding but not included in the computation of diluted average common shares because their effect would be anti-dilutive.[5]Prior periods were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.

Consolidated Comprehensive Inco

Consolidated Comprehensive Income Statement (unaudited) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2024		Dec. 31, 2023	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	[2],[3]	$ 1,027	[1]	$ 206	$ 982	[1]
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments		(91)		257	103
Unrealized gain (loss) on assets available-for-sale:
Unrealized gain arising during the period		103		698	317
Reclassification adjustment		1		37	1
Total unrealized gain on assets available-for-sale		104		735	318
Defined benefit plans:
Net (loss) arising during the period		0		(75)	0
Foreign exchange adjustment		0		(1)	0
Amortization of prior service credit, net loss and initial obligation included in net periodic benefit cost		3		(2)	(3)
Total defined benefit plans		3		(78)	(3)
Net unrealized gain (loss) on cash flow hedges		1		(2)	5
Total other comprehensive (loss), net of tax	[4]	17		912	423
Total comprehensive income		1,044		1,118	1,405
Net (income) loss attributable to noncontrolling interests		(2)		2	0
Other comprehensive loss attributable to noncontrolling interests		0		0	0
Comprehensive income applicable to shareholders of The Bank of New York Mellon Corporation		$ 1,042		$ 1,120	$ 1,405
[1]Prior period was restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.[2]Prior periods were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information[3]Prior periods were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.[4]Other comprehensive income (loss) attributable to The Bank of New York Mellon Corporation shareholders was $17 million for the quarter ended March 31, 2024, $912 million for the quarter ended Dec. 31, 2023 and $423 million for the quarter ended March 31, 2023.

Consolidated Comprehensive In_2

Consolidated Comprehensive Income Statement (unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Other comprehensive income	$ 17	$ 912	$ 423

Consolidated Balance Sheet (una

Consolidated Balance Sheet (unaudited) - USD ($) $ in Millions		Mar. 31, 2024	Dec. 31, 2023
Assets
Cash and due from banks, net of allowance for credit losses of $30 and $18		$ 5,305	$ 4,922
Interest-bearing deposits with the Federal Reserve and other central banks		119,197	111,550
Interest-bearing deposits with banks, net of allowance for credit losses of $3 and $2 (includes restricted of $1,907 and $3,420)		10,636	12,139
Federal funds sold and securities purchased under resale agreements		29,661	28,900
Securities:
Held-to-maturity, at amortized cost, net of allowance for credit losses of less than $1 and $1 (fair value of $43,213 and $44,711)		48,404	49,578
Available-for-sale, at fair value (amortized cost of $94,641 and $80,678, net of allowance for credit losses of $1 and less than $1)		90,505	76,817
Total securities		138,909	126,395
Trading assets		10,078	10,058
Loans		73,615	66,879
Allowance for credit losses		(322)	(303)
Net loans		73,293	66,576
Premises and equipment		3,136	3,163
Accrued interest receivable		1,343	1,150
Goodwill		16,228	16,261
Intangible assets		2,839	2,854
Other asset, net of allowance for credit losses on accounts receivable of $3 and $3 (includes $1,437 and $1,261, at fair value)	[1]	24,103	25,909
Total assets	[1]	434,728	409,877
Deposits:
Noninterest-bearing deposits (principally U.S. offices)		63,405	58,274
Interest-bearing deposits in U.S. offices		151,540	132,616
Interest-bearing deposits in non-U.S. offices		94,075	92,779
Total deposits		309,020	283,669
Federal funds purchased and securities sold under repurchase agreements		15,112	14,507
Trading liabilities		3,100	6,226
Payables to customers and broker-dealers		19,392	18,395
Other borrowed funds		306	479
Accrued taxes and other expenses	[1]	4,395	5,411
Other liabilities (including allowance for credit losses on lending-related commitments of $81 and $87, also includes $70 and $195, at fair value)	[1]	10,245	9,028
Long-term debt		32,396	31,257
Total liabilities	[1]	393,966	368,972
Temporary equity
Redeemable noncontrolling interests		82	85
Permanent equity
Preferred stock – par value $0.01 per share; authorized 100,000,000 shares; issued 43,826 and 43,826 shares		4,343	4,343
Common stock – par value $0.01 per share; authorized 3,500,000,000 shares; issued 1,408,769,769 and 1,402,429,447 shares		14	14
Additional paid-in capital		29,055	28,908
Retained earnings	[1]	40,178	39,549
Accumulated other comprehensive loss, net of tax		(4,876)	(4,893)
Less: Treasury stock of 660,953,934 and 643,085,355 common shares, at cost		(28,145)	(27,151)
Total The Bank of New York Mellon Corporation shareholders' equity	[1]	40,569	40,770
Nonredeemable noncontrolling interests of consolidated investment management funds		111	50
Total permanent equity	[1],[2]	40,680	40,820	[3],[4]
Total liabilities, temporary equity and permanent equity		$ 434,728	$ 409,877
[1]Prior period balances were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.[2]Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $36,427 million at Dec. 31, 2023 and $36,226 million at March 31, 2024.[3]Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $36,020 million at Sept. 30, 2023 and $36,427 million at Dec. 31, 2023.[4]Retained earnings was restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.

Consolidated Balance Sheet (u_2

Consolidated Balance Sheet (unaudited) (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Cash and due from banks, allowance for credit loss	$ 30	$ 18
Interest-bearing deposits with banks, allowance for credit loss	3	2
Restricted cash, interest-bearing deposits in banks and other financial institutions	1,907	3,420
Debt securities, held-to-maturity, allowance for credit loss (less than)	1	1
Held-to-maturity, fair value	43,213	44,711
Debt securities, available-for-sale, amortized cost	94,641	80,678
Debt securities, available-for-sale, allowance for credit loss	1	1
Other assets, allowance for credit loss on accounts receivable	3	3
Other assets	1,437	1,261
Allowance for credit losses on lending related commitments	81	87
Other liabilities, fair value	$ 70	$ 195
Preferred stock, par value (usd per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (shares)	100,000,000	100,000,000
Preferred stock, issued (shares)	43,826	43,826
Common stock, par value (usd per share)	$ 0.01	$ 0.01
Common stock, authorized (shares)	3,500,000,000	3,500,000,000
Common stock, issued (shares)	1,408,769,769	1,402,429,447
Treasury stock (in shares)	660,953,934	643,085,355

Consolidated Statement of Cash

Consolidated Statement of Cash Flows (unaudited) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2024		Dec. 31, 2023	Mar. 31, 2023
Operating activities
Net income	[2],[3]	$ 1,027	[1]	$ 206	$ 982	[1]
Net (income) loss attributable to noncontrolling interests		(2)		2	0
Net income applicable to shareholders of The Bank of New York Mellon Corporation		1,025	[1]	208	982	[1]
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Provision for credit losses		27		84	27
Pension plan contributions		(2)			(1)
Depreciation and amortization		468			351
Deferred tax expense		13			2
Net securities losses		1			1
Change in trading assets and liabilities		(3,264)			989
Change in accruals and other, net	[1]	(948)			(559)
Net cash (used for) provided by operating activities		(2,680)			1,792
Investing activities
Change in interest-bearing deposits with banks		(280)			(25)
Change in interest-bearing deposits with the Federal Reserve and other central banks		(8,698)			(24,908)
Purchases of securities held-to-maturity		(243)			(273)
Paydowns of securities held-to-maturity		965			1,063
Maturities of securities held-to-maturity		708			811
Purchases of securities available-for-sale		(18,770)			(8,917)
Sales of securities available-for-sale		1,160			6,581
Paydowns of securities available-for-sale		1,191			904
Maturities of securities available-for-sale		4,498			5,229
Net change in loans		(6,777)			3,714
Change in federal funds sold and securities purchased under resale agreements		(766)			(2,599)
Net change in seed capital investments		45			6
Purchases of premises and equipment/capitalized software		(299)			(261)
Other, net		525			923
Net cash (used for) investing activities		(26,741)			(17,752)
Financing activities
Change in deposits		27,030			760
Change in federal funds purchased and securities sold under repurchase agreements		603			14,231
Change in payables to customers and broker-dealers		997			(826)
Change in other borrowed funds		(160)			2,141
Net proceeds from the issuance of long-term debt		2,496			1,498
Repayments, redemptions and repurchases of long-term debt		(1,150)			(1,750)
Issuance of common stock		4			3
Treasury stock acquired		(988)			(1,256)
Common cash dividends paid		(324)			(304)
Preferred cash dividends paid		(72)			(71)
Other, net		(3)			(13)
Net cash provided by financing activities		28,433			14,413
Effect of exchange rate changes on cash		(142)			41
Change in cash and due from banks and restricted cash
Change in cash and due from banks and restricted cash		(1,130)			(1,506)
Cash and due from banks and restricted cash at beginning of period		8,342			11,529
Cash and due from banks and restricted cash at end of period		7,212		8,342	10,023
Cash and due from banks at end of period (unrestricted cash)		5,305			5,564
Restricted cash at end of period		1,907			4,459
Cash and due from banks and restricted cash at end of period		7,212		$ 8,342	10,023
Supplemental disclosures
Interest paid		4,955			2,671
Income taxes paid		132			160
Income taxes refunded		$ 12			$ 2
[1]Prior period was restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.[2]Prior periods were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information[3]Prior periods were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.

Consolidated Statement of Chang

Consolidated Statement of Changes in Equity (unaudited) - USD ($) $ in Millions		Total		Preferred stock	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive (loss), net of tax	Treasury stock	Nonredeemable noncontrolling interests of consolidated investment management funds	Redeemable non- controlling interests/ temporary equity
Beginning Balance at Dec. 31, 2022	[2]	$ 40,620	[1]	$ 4,838	$ 14	$ 28,508	$ 37,743	$ (5,966)	$ (24,524)	$ 7	$ 109
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued to shareholders of noncontrolling interests											10
Redemption of subsidiary shares from noncontrolling interests											(34)
Other net changes in noncontrolling interests		57				(8)				65	(9)
Net income		982	[3],[4],[5]				982
Other comprehensive income		423						423
Other comprehensive income		0									0
Dividends:
Common stock	[6]	(304)					(304)
Preferred stock		(71)					(71)
Repurchase of common stock		(1,256)							(1,256)
Common stock issued under employee benefit plans		5				5
Stock-based compensation		145				145
Excise tax on share repurchases		(10)							(10)
Other											(2)
Ending Balance at Mar. 31, 2023		40,591	[1]	4,838	14	28,650	38,350	(5,543)	(25,790)	72	96
Beginning Balance at Sep. 30, 2023	[8]	40,914	[7]	4,838	14	28,793	39,714	(5,805)	(26,696)	56	109
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued to shareholders of noncontrolling interests											11
Redemption of subsidiary shares from noncontrolling interests											(20)
Other net changes in noncontrolling interests		17				21				(4)	(18)
Net income		206	[4],[5]				208			(2)
Other comprehensive income		912						912
Other comprehensive income		0
Dividends:
Common stock	[9]	(328)					(328)
Preferred stock		(46)
Preferred stock		(36)					(36)
Repurchase of common stock		(450)							(450)
Common stock issued under employee benefit plans		5				5
Preferred stock redemption		(500)		(500)
Stock-based compensation		89				89
Amortization of preferred stock discount		0		5			(5)
Excise tax on share repurchases		(5)							(5)
Excise tax of preferred stock redemption		(5)					(5)
Other		1					1				3
Ending Balance at Dec. 31, 2023	[12]	40,820	[7],[10],[11]	4,343	14	28,908	39,549	(4,893)	(27,151)	50	85
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued to shareholders of noncontrolling interests											10
Redemption of subsidiary shares from noncontrolling interests											(17)
Other net changes in noncontrolling interests		54				(5)				59	5
Net income		1,027	[3],[4],[5]				1,025			2
Other comprehensive income		17						17
Other comprehensive income		0
Dividends:
Common stock	[13]	(324)					(324)
Preferred stock		(72)					(72)
Repurchase of common stock		(988)							(988)
Common stock issued under employee benefit plans		7				7
Stock-based compensation		168				168
Excise tax on share repurchases		(6)							(6)
Other		(23)				(23)					(1)
Ending Balance at Mar. 31, 2024		$ 40,680	[10],[11]	$ 4,343	$ 14	$ 29,055	$ 40,178	$ (4,876)	$ (28,145)	$ 111	$ 82
[1]Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $35,775 million at Dec. 31, 2022 and $35,681 million at March 31, 2023.[2]Retained earnings was restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.[3]Prior period was restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.[4]Prior periods were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information[5]Prior periods were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.[6]Includes dividend equivalents on share-based awards.[7]Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $36,020 million at Sept. 30, 2023 and $36,427 million at Dec. 31, 2023.[8]Retained earnings was restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.[9]Includes dividend equivalents on share-based awards.[10]Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $36,427 million at Dec. 31, 2023 and $36,226 million at March 31, 2024.[11]Prior period balances were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.[12]Retained earnings was restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.[13]Includes dividend equivalents on share-based awards.

Consolidated Statement of Cha_2

Consolidated Statement of Changes in Equity (unaudited) (Parenthetical) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Sep. 30, 2023	Dec. 31, 2022
Dividends on common stock, cash paid (usd per share)		$ 0.42	$ 0.42	$ 0.37
The Bank of New York Mellon Corporation shareholders’ equity	[1]	$ 40,569	$ 40,770
Common stock
The Bank of New York Mellon Corporation shareholders’ equity		$ 36,226	$ 36,427	$ 35,681	$ 36,020	$ 35,775
[1]Prior period balances were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.

Basis of presentation

Basis of presentation	3 Months Ended
	Mar. 31, 2024
Accounting Policies [Abstract]
Basis of presentation	Basis of presentation In this Quarterly Report on Form 10-Q, references to “our,” “we,” “us,” “BNY Mellon,” the “Company” and similar terms refer to The Bank of New York Mellon Corporation and its consolidated subsidiaries. The term “Parent” refers to The Bank of New York Mellon Corporation but not to its subsidiaries. Basis of presentation The accounting and financial reporting policies of BNY Mellon, a global financial services company, conform to U.S. generally accepted accounting principles (“GAAP”) and prevailing industry practices. For information on our significant accounting and reporting policies, see Note 1 of the Notes to Consolidated Financial Statements in our Annual Report on Form 10-K for the year ended Dec. 31, 2023 (the “2023 Annual Report”). The accompanying consolidated financial statements are unaudited. In the opinion of management, all adjustments necessary, consisting of normal recurring adjustments, for a fair presentation of financial position, results of operations and cash flows for the periods presented have been made. These financial statements should be read in conjunction with our Consolidated Financial Statements included in our 2023 Annual Report. On Jan. 1, 2024, we adopted Accounting Standards Update (“ASU”) 2023-02, Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method on a retrospective basis for our investments in renewable energy projects that have met the eligibility criteria, and restated prior period financial statements. See Note 2 for additional information. Use of estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates based upon assumptions about future economic and market conditions which affect reported amounts and related disclosures in our

New accounting guidance

New accounting guidance	3 Months Ended
	Mar. 31, 2024
Accounting Policies [Abstract]
New accounting guidance	New accounting guidance The following accounting guidance was adopted on Jan. 1, 2024. ASU 2023-02, Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method 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 permits reporting entities to elect to account for their tax equity investments, regardless of the tax credit program from which the income tax credits are received, using the proportional amortization method if certain conditions are met. Under the proportional amortization method, an entity amortizes the initial cost of the investment in proportion to the income tax credits and other income tax benefits received, and recognizes the net amortization and income tax credits and other income tax benefits in the income statement as a component of the provision for income taxes. We adopted this guidance on Jan.1, 2024. The impact of adopting this new guidance for our renewable energy investments that met the eligibility criteria was an increase in investment and other revenue and an increase in the provision for income taxes on the consolidated income statement. Renewable energy investments are recorded in other assets on the balance sheet. In the first quarter of 2024, we restated the prior period financial statements to reflect the impact of the retrospective application of the new accounting guidance. The required disclosures are included in Note 7. The table below presents the impact of the new accounting guidance on our previously reported income statement amounts. Consolidated Income Statement Previously reported Adjustment Restated (in millions) 4Q23 1Q23 4Q23 1Q23 4Q23 1Q23 Investment and other revenue $ (4) $ 79 $ 47 $ 52 $ 43 $ 131 Total fee and other revenue 3,210 3,235 47 52 3,257 3,287 Total revenue 4,311 4,363 47 52 4,358 4,415 Income before income taxes 232 1,236 47 52 279 1,288 Provision for income taxes 29 260 44 46 73 306 Net income 203 976 3 6 206 982 Net income applicable to shareholders of The Bank of New York Mellon Corporation 205 976 3 6 208 982 Net income applicable to common shareholders of The Bank of New York Mellon Corporation 159 905 3 6 162 911 The table below presents the impact of the new accounting guidance on our previously reported earnings per share applicable to common shareholders. Earnings per share applicable to common shareholders of The Bank of New York Mellon Corporation Previously reported Restated (in dollars) 4Q23 1Q23 4Q23 1Q23 Basic $ 0.21 $ 1.13 $ 0.21 $ 1.13 Diluted 0.21 1.12 0.21 1.13 The table below presents the impact of the new accounting guidance on our previously reported balance sheet amounts. Consolidated Balance Sheet Dec. 31, 2023 (in millions) Previously reported Adjustment Restated Other assets $ 25,985 $ (76) $ 25,909 Total assets 409,953 (76) 409,877 Accrued taxes and other expenses 5,567 (156) 5,411 Other liabilities 8,844 184 9,028 Total liabilities 368,944 28 368,972 Retained earnings 39,653 (104) 39,549 Total The Bank of New York Mellon Corporation shareholders’ equity 40,874 (104) 40,770 Total permanent equity 40,924 (104) 40,820 Total liabilities, temporary equity and permanent equity 409,953 (76) 409,877

Acquisitions and dispositions

Acquisitions and dispositions	3 Months Ended
	Mar. 31, 2024
Business Combination and Asset Acquisition [Abstract]
Acquisitions and dispositions	Acquisitions and dispositions We sometimes structure our acquisitions and divestitures with both an initial payment or receipt and later contingent payments or receipts tied to post-closing revenue or income growth. At March 31, 2024, we are potentially obligated to pay additional consideration which is recorded at fair value totaling approximately $20 million and, using reasonable assumptions and estimates, could range from $15 million to $20 million over the next year . Contingent payments totaled $5 million in the first three months of 2024 and we recorded $1 million of increases to contingent earnout payables reflected in other expense. At March 31, 2024, we could potentially receive additional consideration which is recorded at fair value totaling approximately $30 million and, using reasonable assumptions and estimates, could range from $20 million to $45 million over the next four years . There were no contingent receipts in the first three months of 2024.

Securities

Securities	3 Months Ended
	Mar. 31, 2024
Securities [Abstract]
Securities	Securities The following tables present the amortized cost, the gross unrealized gains and losses and the fair value of securities at March 31, 2024 and Dec. 31, 2023. Securities at March 31, 2024 Gross Fair Amortized cost (in millions) Gains Losses Available-for-sale: Non-U.S. government (a) $ 24,988 $ 40 $ 711 $ 24,317 U.S. Treasury 21,960 52 1,824 20,188 Agency residential mortgage-backed securities (“RMBS”) 17,000 109 492 16,617 Agency commercial mortgage-backed securities (“MBS”) 8,083 63 562 7,584 Foreign covered bonds 7,420 17 176 7,261 Collateralized loan obligations (“CLOs”) 6,255 11 1 6,265 Non-agency commercial MBS 3,219 2 287 2,934 U.S. government agencies 2,887 37 188 2,736 Non-agency RMBS 1,852 30 179 1,703 Other asset-backed securities (“ABS”) 976 — 77 899 Other debt securities 1 — — 1 Total securities available-for-sale (b)(c) $ 94,641 $ 361 $ 4,497 $ 90,505 Held-to-maturity: Agency RMBS $ 28,805 $ 2 $ 3,791 $ 25,016 U.S. Treasury 8,763 — 617 8,146 U.S. government agencies 4,144 — 414 3,730 Agency commercial MBS 3,581 — 304 3,277 Non-U.S. government (a) 2,093 — 66 2,027 CLOs 983 — — 983 Non-agency RMBS 24 1 1 24 Other debt securities 11 — 1 10 Total securities held-to-maturity $ 48,404 $ 3 $ 5,194 $ 43,213 Total securities $ 143,045 $ 364 $ 9,691 $ 133,718 (a) Includes supranational securities. (b) The amortized cost of available-for-sale is net of the allowance for credit losses of $1 million. The allowance for credit loss relates to non-agency RMBS. (c) Includes gross unrealized gains of $230 million and gross unrealized losses of $138 million recorded in accumulated other comprehensive income related to securities that were transferred from available-for-sale to held-to-maturity. The unrealized gains primarily relate to agency RMBS, agency commercial MBS and U.S. Treasury securities. The unrealized losses primarily relate to agency RMBS and U.S. Treasury securities. The unrealized gains and losses will be amortized into net interest income over the contractual lives of the securities. Securities at Dec. 31, 2023 Gross Amortized cost Fair (in millions) Gains Losses Available-for-sale: Non-U.S. government (a) $ 18,998 $ 68 $ 684 $ 18,382 U.S. Treasury 18,193 63 1,652 16,604 Agency RMBS 13,457 119 465 13,111 Agency commercial MBS 8,191 69 531 7,729 Foreign covered bonds 6,489 25 180 6,334 CLOs 6,142 5 10 6,137 Non-agency commercial MBS 3,245 1 311 2,935 U.S. government agencies 3,053 42 194 2,901 Non-agency RMBS 1,883 32 175 1,740 Other ABS 1,026 1 84 943 Other debt securities 1 — — 1 Total securities available-for-sale (b)(c) $ 80,678 $ 425 $ 4,286 $ 76,817 Held-to-maturity: Agency RMBS $ 29,740 $ 1 $ 3,493 $ 26,248 U.S. Treasury 9,123 — 612 8,511 U.S. government agencies 4,146 — 401 3,745 Agency commercial MBS 3,411 1 296 3,116 Non-U.S. government (a) 2,137 3 67 2,073 CLOs 983 — 1 982 Non-agency RMBS 26 1 1 26 Other debt securities 12 — 2 10 Total securities held-to-maturity $ 49,578 $ 6 $ 4,873 $ 44,711 Total securities $ 130,256 $ 431 $ 9,159 $ 121,528 (a) Includes supranational securities. (b) The amortized cost of available-for-sale securities is net of the allowance for credit losses of less than $1 million. The allowance for credit loss primarily relates to non-agency RMBS. (c) Includes gross unrealized gains of $250 million and gross unrealized losses of $146 million recorded in accumulated other comprehensive income related to securities that were transferred from available-for-sale to held-to-maturity. The unrealized gains primarily relate to agency RMBS, agency commercial MBS, and U.S. Treasury securities. The unrealized losses primarily relate to agency RMBS and U.S. Treasury securities. The unrealized gains and losses will be amortized into net interest income over the contractual lives of the securities. The following table presents the realized gains and losses, on a gross basis. Net securities gains (losses) (in millions) 1Q24 4Q23 1Q23 Realized gross gains $ 4 $ 1 $ 14 Realized gross losses (5) (49) (15) Total net securities (losses) $ (1) $ (48) $ (1) The following table presents pre-tax net securities gains (losses) by type. Net securities gains (losses) (in millions) 1Q24 4Q23 1Q23 U.S. Treasury $ (1) $ (49) $ (8) Non-agency RMBS — — 2 Other — 1 5 Total net securities (losses) $ (1) $ (48) $ (1) Allowance for credit losses – Securities The allowance for credit losses related to securities was $1 million at March 31, 2024 and $1 million at Dec. 31, 2023, and relates to non-agency RMBS and other debt securities. Credit quality indicators – Securities At March 31, 2024, the gross unrealized losses on the securities portfolio were primarily attributable to an increase in interest rates from the date of purchase, and for certain securities that were transferred from available-for-sale to held-to-maturity, an increase in interest rates through the date they were transferred. Specifically, $138 million of the unrealized losses at March 31, 2024 and $146 million at Dec. 31, 2023 reflected in the tables below relate to certain securities that were previously transferred from available-for-sale to held-to-maturity. As the transfers created a new cost basis for the securities, if these securities have experienced unrealized losses since the date of transfer, the corresponding unrealized losses would be reflected in the held-to-maturity securities portfolio in the following tables. The following tables show the aggregate fair value of available-for-sale securities with 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 more without an allowance for credit losses. Available-for-sale securities in an unrealized loss position without an allowance for credit losses at March 31, 2024 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized (in millions) U.S. Treasury $ 4,973 $ 43 $ 15,046 $ 1,781 $ 20,019 $ 1,824 Non-U.S. government (a) 7,130 54 11,188 657 18,318 711 Agency RMBS 6,326 59 6,873 433 13,199 492 Agency commercial MBS 262 6 6,965 556 7,227 562 Foreign covered bonds 1,280 5 3,020 171 4,300 176 Non-agency commercial MBS 58 — 2,604 287 2,662 287 U.S. government agencies 704 10 1,551 178 2,255 188 Non-agency RMBS 89 1 1,196 176 1,285 177 CLOs 912 — 335 1 1,247 1 Other ABS — — 790 77 790 77 Total securities available-for-sale (b) $ 21,734 $ 178 $ 49,568 $ 4,317 $ 71,302 $ 4,495 (a) Includes supranational securities . (b) Includes $138 million of gross unrealized losses for 12 months or more recorded in accumulated other comprehensive income related to securities that were transferred from available-for-sale to held-to-maturity. There were no gross unrealized losses for less than 12 months. The unrealized losses are primarily related to agency RMBS and U.S. Treasury securities and will be amortized into net interest income over the contractual lives of the securities. Available-for-sale securities in an unrealized loss position without an allowance for credit losses at Dec. 31, 2023 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized (in millions) U.S. Treasury $ 694 $ 48 $ 14,862 $ 1,604 $ 15,556 $ 1,652 Non-U.S. government (a) 2,756 24 11,767 660 14,523 684 Agency RMBS 2,753 27 6,793 438 9,546 465 Agency commercial MBS 328 5 7,060 526 7,388 531 CLOs 784 — 3,158 10 3,942 10 Foreign covered bonds 268 1 3,603 179 3,871 180 Non-agency commercial MBS 187 2 2,607 309 2,794 311 U.S. government agencies 573 4 1,779 190 2,352 194 Non-agency RMBS 30 1 1,300 174 1,330 175 Other ABS — — 832 84 832 84 Total securities available-for-sale (b) $ 8,373 $ 112 $ 53,761 $ 4,174 $ 62,134 $ 4,286 (a) Includes supranational securities. (b) Includes $146 million of gross unrealized losses for 12 months or more recorded in accumulated other comprehensive income related to securities that were transferred from available-for-sale to held-to-maturity. There were no gross unrealized losses for less than 12 months. The unrealized losses are primarily related to agency RMBS and U.S. Treasury securities and will be amortized into net interest income over the contractual lives of the securities. The following tables show the credit quality of the held-to-maturity securities. We have included certain credit ratings information because the information can indicate the degree of credit risk to which we are exposed. Significant changes in ratings classifications could indicate increased credit risk for us and could be accompanied by an increase in the allowance for credit losses and/or a reduction in the fair value of our securities portfolio. Held-to-maturity securities portfolio at March 31, 2024 Ratings (a) Net unrealized gain (loss) BB+ (dollars in millions) Amortized AAA/ A+/ BBB+/ Not Agency RMBS $ 28,805 $ (3,789) 100 % — % — % — % — % U.S. Treasury 8,763 (617) 100 — — — — U.S. government agencies 4,144 (414) 100 — — — — Agency commercial MBS 3,581 (304) 100 — — — — Non-U.S. government (b)(c) 2,093 (66) 100 — — — — CLOs 983 — 100 — — — — Non-agency RMBS 24 — 24 55 2 17 2 Other debt securities 11 (1) — — — — 100 Total held-to-maturity securities $ 48,404 $ (5,191) 100 % — % — % — % — % (a) Represents ratings by Standard & Poor’s (“S&P”) or the equivalent. (b) Includes supranational securities. (c) Primarily consists of exposure to Germany, France, UK and the Netherlands. Held-to-maturity securities portfolio at Dec. 31, 2023 Ratings (a) Net unrealized gain (loss) BB+ (dollars in millions) Amortized AAA/ A+/ BBB+/ Not Agency RMBS $ 29,740 $ (3,492) 100 % — % — % — % — % U.S. Treasury 9,123 (612) 100 — — — — U.S. government agencies 4,146 (401) 100 — — — — Agency commercial MBS 3,411 (295) 100 — — — — Non-U.S. government (b)(c) 2,137 (64) 100 — — — — CLOs 983 (1) 100 — — — — Non-agency RMBS 26 — 25 54 2 17 2 Other debt securities 12 (2) — — — — 100 Total held-to-maturity securities $ 49,578 $ (4,867) 100 % — % — % — % — % (a) Represents ratings by S&P or the equivalent. (b) Includes supranational securities. (c) Primarily consists of exposure to Germany, France, UK and the Netherlands. Maturity distribution The following table shows the maturity distribution by carrying amount and yield (on a tax equivalent basis) of our securities portfolio. Maturity distribution and yields on securities at March 31, 2024 Within 1 year 1-5 years 5-10 years After 10 years Total (dollars in millions) Amount Yield (a) Amount Yield (a) Amount Yield (a) Amount Yield (a) Amount Yield (a) Available-for-sale: U.S. Treasury $ 3,061 1.74 % $ 12,520 1.75 % $ 2,650 3.06 % $ 1,957 2.92 % $ 20,188 2.04 % Non-U.S. government (b) 4,826 2.37 16,482 3.00 2,868 2.36 141 3.08 24,317 2.80 Foreign covered bonds 1,279 3.55 5,557 3.39 425 2.20 — — 7,261 3.34 U.S. government agencies 50 1.51 1,692 3.82 886 2.81 108 2.75 2,736 3.38 Other debt securities — — — — — — 1 4.85 1 4.85 Mortgage-backed securities: Agency RMBS 16,617 5.13 Non-agency RMBS 1,703 4.46 Agency commercial MBS 7,584 3.04 Non-agency commercial MBS 2,934 3.47 CLOs 6,265 6.80 Other ABS 899 2.42 Total securities available-for-sale $ 9,216 2.32 % $ 36,251 2.65 % $ 6,829 2.68 % $ 2,207 2.92 % $ 90,505 3.44 % Held-to-maturity: U.S. Treasury $ 2,816 1.55 % $ 5,137 1.21 % $ 810 1.07 % $ — — % $ 8,763 1.30 % U.S. government agencies 555 1.34 2,827 1.46 549 1.69 213 1.99 4,144 1.50 Non-U.S. government (b) 896 0.97 1,121 1.29 76 0.59 — — 2,093 1.13 Other debt securities — — — — 11 4.75 — — 11 4.75 Mortgage-backed securities: Agency RMBS 28,805 2.33 Non-agency RMBS 24 4.42 Agency commercial MBS 3,581 2.57 CLOs 983 6.72 Total securities held-to-maturity $ 4,267 1.40 % $ 9,085 1.30 % $ 1,446 1.31 % $ 213 1.99 % $ 48,404 2.13 % Total securities $ 13,483 2.03 % $ 45,336 2.39 % $ 8,275 2.46 % $ 2,420 2.85 % $ 138,909 3.00 % (a) Yields are based upon the amortized cost of securities and consider the contractual coupon, amortization of premiums and accretion of discounts, excluding the effect of related hedging derivatives. (b) Includes supranational securities. Pledged assets At March 31, 2024, BNY Mellon had pledged assets of $145 billion, including $96 billion pledged as collateral for potential borrowings at the Federal Reserve Discount Window and $9 billion pledged as collateral for borrowing at the Federal Home Loan Bank. The components of the assets pledged at March 31, 2024 included $127 billion of securities, $13 billion of loans, $4 billion of trading assets and $1 billion of interest-bearing deposits with banks. If there has been no borrowing at the Federal Reserve Discount Window, the Federal Reserve generally allows banks to freely move assets in and out of their pledged assets account to sell or repledge the assets for other purposes. BNY Mellon regularly moves assets in and out of its pledged assets account at the Federal Reserve as there have been no borrowings. At Dec. 31, 2023, BNY Mellon had pledged assets of $134 billion, including $93 billion pledged as collateral for potential borrowing at the Federal Reserve Discount Window and $9 billion pledged as collateral for borrowing at the Federal Home Loan Bank. The components of the assets pledged at Dec. 31, 2023 included $116 billion of securities, $13 billion of loans, $4 billion of trading assets and $1 billion of interest-bearing deposits with banks. At March 31, 2024 and Dec. 31, 2023, pledged assets included $26 billion and $24 billion, respectively, for which the recipients were permitted to sell or repledge the assets delivered. We also obtain securities as collateral, including receipts under resale agreements, securities borrowed, derivative contracts and custody agreements, on terms which permit us to sell or repledge the securities to others. At March 31, 2024 and Dec. 31, 2023, the market value of the securities received that can be sold or repledged was $217 billion and $212 billion, respectively. We routinely sell or repledge these securities through delivery to third parties. As of March 31, 2024 and Dec. 31, 2023, the market value of securities collateral sold or repledged was $197 billion and $180 billion, respectively. Restricted cash and securities

Loans and asset quality

Loans and asset quality	3 Months Ended
	Mar. 31, 2024
Receivables [Abstract]
Loans and asset quality	Loans and asset quality Loans The table below provides the details of our loan portfolio. Loans March 31, 2024 Dec. 31, 2023 (in millions) Commercial $ 2,463 $ 2,112 Commercial real estate 6,997 6,760 Financial institutions 12,059 10,521 Lease financings 599 599 Wealth management loans 9,028 9,109 Wealth management mortgages 9,088 9,131 Other residential mortgages 1,147 1,166 Capital call financing 3,987 3,700 Other 2,723 2,717 Overdrafts 7,947 3,053 Margin loans 17,577 18,011 Total loans (a) $ 73,615 $ 66,879 (a) Net of unearned income of $258 million at March 31, 2024 and $268 million at Dec. 31, 2023 primarily related to lease financings. We disclose information related to our loans and asset quality by the class of the financing receivable in the following tables. Allowance for credit losses Activity in the allowance for credit losses on loans and lending-related commitments is presented below. This does not include activity in the allowance for credit losses related to other financial instruments, including cash and due from banks, interest-bearing deposits with banks, federal funds sold and securities purchased under resale agreements, available-for-sale securities, held-to-maturity securities and accounts receivable. Allowance for credit losses activity for the quarter ended March 31, 2024 Wealth management loans Wealth management mortgages Other Capital call financing (in millions) Commercial Commercial Financial Lease Total Beginning balance $ 27 $ 325 $ 19 $ 1 $ 1 $ 9 $ 4 $ 4 $ 390 Charge-offs — — — — — (1) — — (1) Recoveries — — — — — — — — — Net (charge-offs) — — — — — (1) — — (1) Provision (a) (3) 22 (2) (1) — (1) (1) — 14 Ending balance $ 24 $ 347 $ 17 $ — $ 1 $ 7 $ 3 $ 4 $ 403 Allowance for: Loan losses $ 14 $ 287 $ 8 $ — $ 1 $ 6 $ 3 $ 3 $ 322 Lending-related commitments 10 60 9 — — 1 — 1 81 Individually evaluated for impairment: Loan balance (b) $ — $ 331 $ — $ — $ — $ 16 $ 1 $ — $ 348 Allowance for loan losses — 107 — — — — — — 107 (a) Does not include the provision for credit losses related to other financial instruments of $13 million for the quarter ended March 31, 2024. (b) Includes collateral-dependent loans of $348 million with $303 million of collateral value. Allowance for credit losses activity for the quarter ended Dec. 31, 2023 Wealth management loans Wealth management mortgages Other Capital call financing (in millions) Commercial Commercial Financial Lease Other Total Beginning balance $ 32 $ 222 $ 22 $ 1 $ 1 $ 9 $ 6 $ 3 $ — $ 296 Charge-offs — — — — — — — — — — Recoveries — — — — — — — — 5 5 Net recoveries — — — — — — — — 5 5 Provision (a) (5) 103 (3) — — — (2) 1 (5) 89 Ending balance $ 27 $ 325 $ 19 $ 1 $ 1 $ 9 $ 4 $ 4 $ — $ 390 Allowance for: Loan losses $ 12 $ 266 $ 9 $ 1 $ 1 $ 8 $ 4 $ 2 $ — $ 303 Lending-related commitments 15 59 10 — — 1 — 2 — 87 Individually evaluated for impairment: Loan balance (b) $ — $ 290 $ — $ — $ — $ 12 $ 1 $ — $ — $ 303 Allowance for loan losses — 76 — — — — — — — 76 (a) Does not include the provision for credit losses benefit related to other financial instruments of $5 million for the quarter ended Dec. 31, 2023. (b) Includes collateral-dependent loans of $303 million with $348 million of collateral at fair value. Allowance for credit losses activity for the quarter ended March 31, 2023 Wealth management loans Wealth management mortgages Other Capital call financing Total (in millions) Commercial Commercial Financial Lease Beginning balance $ 18 $ 184 $ 24 $ 1 $ 1 $ 12 $ 8 $ 6 $ 254 Charge-offs — — — — — — — — — Recoveries 1 — — — — — — — 1 Net recoveries 1 — — — — — — — 1 Provision (a) 2 (7) — — — 2 1 — (2) Ending balance $ 21 $ 177 $ 24 $ 1 $ 1 $ 14 $ 9 $ 6 $ 253 Allowance for: Loan losses $ 4 $ 130 $ 8 $ 1 $ 1 $ 13 $ 9 $ 4 $ 170 Lending-related commitments 17 47 16 — — 1 — 2 83 Individually evaluated for impairment: Loan balance (b) $ — $ 54 $ — $ — $ — $ 13 $ 1 $ — $ 68 Allowance for loan losses — — — — — — — — — (a) Does not include the provision for credit losses related to other financial instruments of $29 million for the quarter ended March 31, 2023. (b) Includes collateral-dependent loans of $68 million with $103 million of collateral at fair value. Nonperforming assets The table below presents our nonperforming assets. Nonperforming assets March 31, 2024 Dec. 31, 2023 Recorded investment Recorded investment With an Without an allowance With an Without an allowance (in millions) Total Total Nonperforming loans: Commercial real estate $ 230 $ — $ 230 $ 189 $ — $ 189 Other residential mortgages 22 1 23 23 1 24 Wealth management mortgages 7 16 23 7 12 19 Total nonperforming loans 259 17 276 219 13 232 Other assets owned — 2 2 — 5 5 Total nonperforming assets $ 259 $ 19 $ 278 $ 219 $ 18 $ 237 Past due loans The table below presents our past due loans. Past due loans and still accruing interest March 31, 2024 Dec. 31, 2023 Days past due Total Days past due Total (in millions) 30-59 60-89 ≥90 30-59 60-89 ≥90 Financial institutions $ 455 (a) $ — $ — $ 455 $ 339 (b) $ — $ — $ 339 Wealth management loans 50 — — 50 52 — — 52 Wealth management mortgages 48 — — 48 26 3 — 29 Commercial real estate 3 — — 3 9 3 — 12 Other residential mortgages 12 5 — 17 7 1 — 8 Total past due loans $ 568 $ 5 $ — $ 573 $ 433 $ 7 $ — $ 440 (a) Past due financial institution loans have been collected since March 31, 2024. (b) Past due financial institution loans have been collected since Dec. 31, 2023. Loan modifications Modified loans are evaluated to determine whether a modification or restructuring with a borrower experiencing financial difficulty results in principal forgiveness, an interest rate reduction, an other-than-insignificant payment delay, or a term extension. The modification could result in a new loan or a continuation of the existing loan. In the first quarter of 2024, we modified one commercial real estate exposure, with a recorded investment of $59 million and an unfunded lending commitment of $15 million, by extending the maturity date. We also modified one residential mortgage loan, with an aggregate recorded investment of less than $1 million, by providing payment modifications and extending the maturity date. In the fourth quarter of 2023, we modified three residential mortgage loans, with an aggregate recorded investment of less than $2 million, by payment modifications and extending the maturity dates. In the first quarter of 2023, we modified one commercial real estate loan, with a recorded investment of $12 million, by extending the maturity date. Credit quality indicators Our credit strategy is to focus on investment-grade clients that are active users of our non-credit services. Each customer is assigned an internal credit rating, which is mapped to an external rating agency grade equivalent, if possible, based upon a number of dimensions, which are continually evaluated and may change over time. The tables below provide information about the credit profile of the loan portfolio by the period of origination. Credit profile of the loan portfolio March 31, 2024 Revolving loans Originated, at amortized cost Amortized cost Converted to term loans – Amortized cost Accrued (in millions) 1Q24 2023 2022 2021 2020 Prior to 2020 Total (a) Commercial: Investment grade $ 16 $ 140 $ 56 $ 64 $ — $ 116 $ 1,980 $ — $ 2,372 Non-investment grade 2 — — 24 — — 65 — 91 Total commercial 18 140 56 88 — 116 2,045 — 2,463 $ 3 Commercial real estate: Investment grade 185 555 739 640 558 1,759 226 22 4,684 Non-investment grade 1 237 846 339 307 493 90 — 2,313 Total commercial real estate 186 792 1,585 979 865 2,252 316 22 6,997 33 Financial institutions: Investment grade 184 424 24 110 72 8 10,142 — 10,964 Non-investment grade 45 20 10 — — — 1,020 — 1,095 Total financial institutions 229 444 34 110 72 8 11,162 — 12,059 124 Wealth management loans: Investment grade 4 30 31 109 26 163 8,487 100 8,950 Non-investment grade — — — — — — 78 — 78 Total wealth management loans 4 30 31 109 26 163 8,565 100 9,028 59 Wealth management mortgages (b) 107 841 1,658 1,901 855 3,705 21 — 9,088 24 Lease financings — — — 12 38 549 — — 599 — Other residential mortgages — 179 555 199 5 209 — — 1,147 4 Capital call financing — 10 — — — — 3,977 — 3,987 17 Other loans — — — — — — 2,723 — 2,723 7 Margin loans 7,830 — — — — — 9,747 — 17,577 39 Total loans $ 8,374 $ 2,436 $ 3,919 $ 3,398 $ 1,861 $ 7,002 $ 38,556 $ 122 $ 65,668 $ 310 (a) Excludes overdrafts of $7,947 million. Overdrafts occur on a daily basis primarily in the custody and securities clearance business and are generally repaid within two (b) The gross write-offs related to wealth management mortgage loans were less than $1 million in the first three months of 2024. Credit profile of the loan portfolio Dec. 31, 2023 Revolving loans Originated, at amortized cost Amortized cost Converted to term loans – Amortized cost Accrued (in millions) 2023 2022 2021 2020 2019 Prior to 2019 Total (a) Commercial: Investment grade $ 193 $ 114 $ 70 $ — $ — $ 45 $ 1,483 $ — $ 1,905 Non-investment grade 52 18 — — — — 137 — 207 Total commercial 245 132 70 — — 45 1,620 — 2,112 $ 3 Commercial real estate: Investment grade 1,518 864 585 152 271 875 136 22 4,423 Non-investment grade 1,172 685 154 43 47 152 84 — 2,337 Total commercial real estate 2,690 1,549 739 195 318 1,027 220 22 6,760 30 Financial institutions: Investment grade 616 74 57 — — 10 6,948 — 7,705 Non-investment grade 134 10 — — — — 2,672 — 2,816 Total financial institutions 750 84 57 — — 10 9,620 — 10,521 120 Wealth management loans: Investment grade 39 30 110 26 7 167 8,542 101 9,022 Non-investment grade — 2 — — — — 85 — 87 Total wealth management loans 39 32 110 26 7 167 8,627 101 9,109 57 Wealth management mortgages 850 1,689 1,909 863 736 3,066 18 — 9,131 22 Lease financings 230 — — 40 7 322 — — 599 — Other residential mortgages (b) 184 561 200 5 — 216 — — 1,166 5 Capital call financing 10 — — — — — 3,690 — 3,700 15 Other loans — — — — — — 2,717 — 2,717 7 Margin loans 7,283 — — — — — 10,728 — 18,011 41 Total loans $ 12,281 $ 4,047 $ 3,085 $ 1,129 $ 1,068 $ 4,853 $ 37,240 $ 123 $ 63,826 $ 300 (a) Excludes overdrafts of $3,053 million. Overdrafts occur on a daily basis primarily in the custody and securities clearance business and are generally repaid within two (b) The gross write-offs related to other residential mortgage loans were $3 million in 2023. Commercial loans The commercial loan portfolio is divided into investment grade and non-investment grade categories based on the assigned internal credit ratings, which are generally consistent with those of the public rating agencies. Customers with ratings consistent with BBB- (S&P)/Baa3 (Moody’s) or better are considered to be investment grade. Those clients with ratings lower than this threshold are considered to be non-investment grade. Commercial real estate Our income-producing commercial real estate facilities are focused on experienced owners and are structured with moderate leverage based on existing cash flows. Our commercial real estate lending activities also include construction and renovation facilities. Financial institutions Financial institution exposures are high quality, with 97% of the exposures meeting the investment grade equivalent criteria of our internal credit rating classification at March 31, 2024. In addition, 66% of the financial institutions exposure is secured. For example, securities industry clients and asset managers often borrow against marketable securities held in custody. The exposure to financial institutions is generally short term, with 84% expiring within one year. Wealth management loans Wealth management loans are not typically rated by external rating agencies. A majority of the wealth management loans are secured by the customers’ investment management accounts or custody accounts. Eligible assets pledged for these loans are typically investment grade fixed-income securities, equities and/or mutual funds. Internal ratings for this portion of the wealth management loan portfolio, therefore, would equate to investment grade external ratings. Wealth management loans are provided to select customers based on the pledge of other types of assets. For the loans collateralized by other assets, the credit quality of the obligor is carefully analyzed, but we do not consider this portion of our wealth management loan portfolio to be investment grade. Wealth management mortgages Credit quality indicators for wealth management mortgages are not correlated to external ratings. Wealth management mortgages are typically loans to high-net-worth individuals, which are secured primarily by residential property. These loans are primarily interest-only, adjustable-rate mortgages with a weighted-average loan-to-value ratio of 61% at origination. Delinquency rate is a key indicator of credit quality in our wealth management portfolio. At March 31, 2024, less than 1% of the mortgages were past due. At March 31, 2024, the wealth management mortgage portfolio consisted of the following geographic concentrations: California – 21%; New York – 14%; Florida – 11%; Massachusetts – 8%; and other – 46%. Lease financings At March 31, 2024, nearly all of the leasing exposure was investment grade, or investment grade equivalent, and consisted of exposures backed by well-diversified assets. The largest components of our lease residual value exposure relate to real estate and large-ticket transportation equipment. Assets are both domestic and foreign-based, with primary concentrations in Germany and the U.S. Other residential mortgages The other residential mortgages portfolio primarily consists of 1-4 family residential mortgage loans and totaled $1.1 billion at March 31, 2024 and $1.2 billion at Dec. 31, 2023. These loans are not typically correlated to external ratings. Capital call financing Capital call financing includes loans to private equity funds that are secured by the fund investors’ capital commitments and the funds’ right to call capital. Other loans Other loans primarily include loans to consumers that are fully collateralized with equities, mutual funds and fixed-income securities. Margin loans We had $17.6 billion of secured margin loans at March 31, 2024, compared with $18.0 billion at Dec. 31, 2023. Margin loans are collateralized with marketable securities, and borrowers are required to maintain a daily collateral margin in excess of 100% of the value of the loan. We have rarely suffered a loss on these types of loans. Overdrafts Overdrafts primarily relate to custody and securities clearance clients and totaled $7.9 billion at March 31, 2024 and $3.1 billion at Dec. 31, 2023. Overdrafts occur on a daily basis and are generally repaid within two Reverse repurchase agreements

Goodwill and intangible assets

Goodwill and intangible assets	3 Months Ended
	Mar. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and intangible assets	Goodwill and intangible assets Goodwill The tables below provide a breakdown of goodwill by business segment. Goodwill by business segment (in millions) Securities Market and Wealth Services Investment Consolidated Balance at Dec. 31, 2023 Goodwill $ 7,004 $ 1,429 $ 8,508 $ 16,941 Accumulated impairment losses — — (680) (680) Net goodwill $ 7,004 $ 1,429 $ 7,828 $ 16,261 Business realignment (a) (51) 48 3 — Foreign currency translation (18) (1) (14) (33) Balance at March 31, 2024 Goodwill $ 6,935 $ 1,476 $ 8,497 $ 16,908 Accumulated impairment losses — — (680) (680) Net goodwill $ 6,935 $ 1,476 $ 7,817 $ 16,228 (a) In the first quarter of 2024, we made certain realignments of similar products and services within our lines of business. See Note 19 for additional information. Goodwill by business segment (in millions) Securities Market and Wealth Services Investment Consolidated Balance at Dec. 31, 2022 Goodwill $ 6,973 $ 1,424 $ 8,433 $ 16,830 Accumulated impairment losses — — (680) (680) Net goodwill $ 6,973 $ 1,424 $ 7,753 $ 16,150 Foreign currency translation 12 2 28 42 Balance at March 31, 2023 Goodwill $ 6,985 $ 1,426 $ 8,461 $ 16,872 Accumulated impairment losses — — (680) (680) Net goodwill $ 6,985 $ 1,426 $ 7,781 $ 16,192 Goodwill impairment testing The goodwill impairment test is performed at least annually at the reporting unit level. An interim goodwill impairment test is performed when events or circumstances occur that may indicate that it is more likely than not that the fair value of any reporting unit may be less than its carrying value. In the first quarter of 2024, due to the results of the fourth quarter 2023 interim goodwill impairment test and macroeconomic conditions, we performed an interim goodwill impairment test of the Investment Management reporting unit, which had $6.1 billion of allocated goodwill. No additional goodwill impairment was recognized. Intangible assets The tables below provide a breakdown of intangible assets by business segment. Intangible assets – net carrying amount by business segment (in millions) Securities Market and Wealth Services Investment Other Consolidated Balance at Dec. 31, 2023 $ 164 $ 378 $ 1,463 $ 849 $ 2,854 Amortization (7) (1) (4) — (12) Foreign currency translation (1) — (2) — (3) Balance at March 31, 2024 $ 156 $ 377 $ 1,457 $ 849 $ 2,839 Intangible assets – net carrying amount by business segment (in millions) Securities Market and Wealth Services Investment Other Consolidated Balance at Dec. 31, 2022 $ 193 $ 384 $ 1,475 $ 849 $ 2,901 Amortization (8) (1) (5) — (14) Foreign currency translation — — 3 — 3 Balance at March 31, 2023 $ 185 $ 383 $ 1,473 $ 849 $ 2,890 The table below provides a breakdown of intangible assets by type. Intangible assets March 31, 2024 Dec. 31, 2023 (dollars in millions) Gross Accumulated Net Remaining Gross Accumulated Net Subject to amortization: (a) Customer contracts – Securities Services $ 729 $ (573) $ 156 10 years $ 731 $ (567) $ 164 Customer contracts – Market and Wealth Services 280 (274) 6 2 years 280 (273) 7 Customer relationships – Investment and Wealth Management 553 (484) 69 8 years 553 (479) 74 Other 41 (12) 29 13 years 41 (12) 29 Total subject to amortization $ 1,603 $ (1,343) $ 260 9 years $ 1,605 $ (1,331) $ 274 Not subject to amortization: (b) Tradenames $ 1,292 N/A $ 1,292 N/A $ 1,292 N/A $ 1,292 Customer relationships 1,287 N/A 1,287 N/A 1,288 N/A 1,288 Total not subject to amortization $ 2,579 N/A $ 2,579 N/A $ 2,580 N/A $ 2,580 Total intangible assets $ 4,182 $ (1,343) $ 2,839 N/A $ 4,185 $ (1,331) $ 2,854 (a) Excludes fully amortized intangible assets. (b) Intangible assets not subject to amortization have an indefinite life. N/A – Not applicable. Estimated annual amortization expense for current intangibles for the next five years is as follows: For the year ended Estimated amortization expense (in millions) 2024 $ 49 2025 43 2026 34 2027 28 2028 24 Intangible asset impairment testing Intangible assets not subject to amortization are tested for impairment annually or more often if events or circumstances indicate they may be impaired.

Other assets

Other assets	3 Months Ended
	Mar. 31, 2024
Other Assets [Abstract]
Other assets	Other assets The following table provides the components of other assets presented on the consolidated balance sheet. Other assets March 31, 2024 Dec. 31, 2023 (in millions) Corporate/bank-owned life insurance $ 5,498 $ 5,480 Accounts receivable (a) 4,347 6,567 Software 2,455 2,430 Fails to deliver 2,281 1,514 Tax credit investments (b) 2,130 2,186 Prepaid pension assets 1,984 1,818 Equity method investments 888 873 Other equity investments (c) 763 741 Prepaid expense 754 737 Assets of consolidated investment management funds 568 526 Federal Reserve Bank stock 482 480 Fair value of hedging derivatives 384 236 Seed capital (d) 207 232 Cash collateral receivable on derivative transactions 187 621 Income taxes receivable 165 270 Other (e) 1,010 1,198 Total other assets $ 24,103 $ 25,909 (a) Includes receivables for securities sold or matured that have not yet settled. (b) Prior period renewable energy investments were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 for additional information. (c) Includes strategic equity, private equity and other investments. (d) Includes investments in BNY Mellon funds that hedge deferred incentive awards. (e) At March 31, 2024 and Dec. 31, 2023, other assets include $7 million and $7 million, respectively, of Federal Home Loan Bank stock, at cost. Non-readily marketable equity securities Non-readily marketable equity securities do not have readily determinable fair values. These investments are valued using a measurement alternative where the investments are carried at cost, less any impairment, and plus or minus changes resulting from observable price changes in orderly transactions for an identical or similar investment of the same issuer. The observable price changes are recorded in investment and other revenue on the consolidated income statement. Our non-readily marketable equity securities totaled $494 million at March 31, 2024 and $479 million at Dec. 31, 2023, and are included in other equity investments in the table above. The following table presents the adjustments on the non-readily marketable equity securities. Adjustments on non-readily marketable equity securities Life-to-date (in millions) 1Q24 4Q23 1Q23 Upward adjustments $ — $ 47 $ — $ 335 Downward adjustments — (1) (18) (53) Net adjustments $ — $ 46 $ (18) $ 282 Tax credit investments Tax credit investments include affordable housing projects and renewable energy investments. We invest in affordable housing projects primarily to satisfy the Company’s requirements under the Community Reinvestment Act. On Jan. 1, 2024, we adopted ASU 2023-02, Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method for our renewable energy projects that met the eligibility criteria. See Note 2 for additional information. Our tax credit investments totaled $2.1 billion at March 31, 2024 and $2.2 billion at Dec. 31, 2023. Commitments to fund future investments totaled $777 million at March 31, 2024 and $780 million at Dec. 31, 2023 and are recorded in other liabilities on the consolidated balance sheet. A summary of the commitments to fund future investments is as follows: remainder of 2024 – $283 million; 2025 – $227 million; 2026 – $92 million; 2027 – $44 million; 2028 – $16 million; and 2029 and thereafter – $115 million. Tax credits and other tax benefits recognized were $114 million in the first quarter of 2024, $97 million in the fourth quarter of 2023 and $90 million in the first quarter of 2023. Amortization expense included in the provision for income taxes was $92 million in the first quarter of 2024, $74 million in the fourth quarter of 2023 and $73 million in the first quarter of 2023. Investments valued using net asset value (“NAV”) per share In our Investment and Wealth Management business segment, we make seed capital investments in certain funds we manage. We also hold private equity investments, primarily small business investment companies (“SBICs”), which are compliant with the Volcker Rule, and certain other corporate investments. Seed capital, private equity and other corporate investments are included in other assets on the consolidated balance sheet. The fair value of certain of these investments was estimated using the NAV per share for our ownership interest in the funds. The table below presents information on our investments valued using NAV. Investments valued using NAV March 31, 2024 Dec. 31, 2023 (in millions) Fair value Unfunded Fair value Unfunded Seed capital (a)(b) $ 7 $ — $ 3 $ — Private equity investments (c) 152 41 143 42 Other 7 — 7 — Total $ 166 $ 41 $ 153 $ 42 ( a) Seed capital investments at March 31, 2024 are generally redeemable on request. Distributions are received as the underlying investments in the funds, which have redemption notice periods of up to seven days, are liquidated. (b) Includes investments in funds that relate to deferred compensation arrangements with employees. (c) Private equity investments primarily include Volcker Rule-compliant investments in SBICs that invest in various sectors of the economy. Private equity investments do not have redemption rights. Distributions from such investments will be received as the underlying investments in the private equity investments, which have a life of 10 years, are liquidated.

Contract revenue

Contract revenue	3 Months Ended
	Mar. 31, 2024
Revenue from Contract with Customer [Abstract]
Contract revenue	Contract revenue Fee and other revenue in the Securities Services, Market and Wealth Services and Investment and Wealth Management business segments is primarily variable, based on levels of assets under custody and/or administration, assets under management and the level of client-driven transactions, as specified in the fee schedules. See Note 10 of the Notes to Consolidated Financial Statements in our 2023 Annual Report for information on the nature of our services and revenue recognition. See Note 24 of the Notes to Consolidated Financial Statements in our 2023 Annual Report for additional information on our principal business segments — Securities Services, Market and Wealth Services and Investment and Wealth Management — and the primary services provided. Disaggregation of contract revenue Contract revenue is included in fee and other revenue on the consolidated income statement. The following tables present fee and other revenue related to contracts with customers, disaggregated by type of fee revenue, for each business segment. Business segment data has been determined on an internal management basis of accounting, rather than GAAP, which is used for consolidated financial reporting. Disaggregation of contract revenue by business segment Quarter ended March 31, 2024 March 31, 2023 (a) (in millions) Securities Services Market and Wealth Services Investment and Wealth Management Other Total Securities Services Market and Wealth Services Investment and Wealth Management Other Total Fee and other revenue – contract revenue: Investment services fees $ 1,260 $ 992 $ 26 $ (16) $ 2,262 $ 1,169 $ 932 $ 24 $ (15) $ 2,110 Investment management and performance fees — 2 774 (4) 772 — 2 784 (3) 783 Financing-related fees 15 8 — — 23 13 5 — — 18 Distribution and servicing fees 1 (29) 70 — 42 — (23) 55 1 33 Investment and other revenue 57 60 (90) 1 28 60 50 (80) 1 31 Total fee and other revenue – contract revenue 1,333 1,033 780 (19) 3,127 1,242 966 783 (16) 2,975 Fee and other revenue – not in scope of Accounting Standards Codification (“ASC”) 606 (b)(c)(d) 223 61 25 49 358 201 52 2 57 312 Total fee and other revenue $ 1,556 $ 1,094 $ 805 $ 30 $ 3,485 $ 1,443 $ 1,018 $ 785 $ 41 $ 3,287 (a) Prior period results were revised in the first quarter of 2024 to reflect certain realignments of similar products and services within our lines of business. See Note 19 for additional information. (b) Primarily includes investment services fees, foreign exchange revenue, financing-related fees and investment and other revenue, all of which are accounted for using other accounting guidance. (c) The Investment and Wealth Management business segment is net of income (loss) attributable to noncontrolling interests related to consolidated investment management funds of $2 million in the first quarter of 2024 and $— million in the first quarter of 2023. (d) Prior period amount for the Other segment was restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 for additional information. Disaggregation of contract revenue by business segment Quarter ended Dec. 31, 2023 (a) (in millions) Securities Services Market and Wealth Services Investment and Wealth Management Other Total Fee and other revenue – contract revenue: Investment services fees $ 1,251 $ 970 $ 25 $ (15) $ 2,231 Investment management and performance fees — 2 744 (3) 743 Financing-related fees 7 3 1 (1) 10 Distribution and servicing fees 3 (27) 66 — 42 Investment and other revenue 58 55 (83) — 30 Total fee and other revenue – contract revenue 1,319 1,003 753 (19) 3,056 Fee and other revenue – not in scope of ASC 606 (b)(c)(d) 225 57 (119) 40 203 Total fee and other revenue $ 1,544 $ 1,060 $ 634 $ 21 $ 3,259 (a) Prior period results were revised in the first quarter of 2024 to reflect certain realignments of similar products and services within our lines of business. See Note 19 for additional information. (b) Primarily includes investment services fees, foreign exchange revenue, financing-related fees and investment and other revenue, all of which are accounted for using other accounting guidance. (c) The Investment and Wealth Management business segment is net of (loss) attributable to noncontrolling interests related to consolidated investment management funds of $(2) million in the fourth quarter of 2023. (d) Prior period amount for the Other segment was restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 for additional information. Contract balances Our clients are billed based on fee schedules that are agreed upon in each customer contract. Receivables from customers were $2.6 billion at March 31, 2024 and Dec. 31, 2023. Contract assets represent accrued revenues that have not yet been billed to customers due to certain contractual terms other than the passage of time and were $48 million at March 31, 2024 and $27 million at Dec. 31, 2023. Accrued revenues recorded as contract assets are usually billed on an annual basis. Both receivables from customers and contract assets are included in other assets on the consolidated balance sheet. Contract liabilities represent payments received in advance of providing services under certain contracts and were $204 million at March 31, 2024 and $172 million at Dec. 31, 2023. Contract liabilities are included in other liabilities on the consolidated balance sheet. Revenue recognized in the first quarter of 2024 relating to contract liabilities as of Dec. 31, 2023 was $55 million. Changes in contract assets and liabilities primarily relate to either party’s performance under the contracts. Contract costs Incremental costs for obtaining contracts that are deemed recoverable are capitalized as contract costs. Such costs result from the payment of sales incentives, primarily in the Wealth Management business, and totaled $52 million at March 31, 2024 and $46 million at Dec. 31, 2023. Capitalized sales incentives are amortized based on the transfer of goods or services to which the assets relate. The amortization of capitalized sales incentives, which is included in staff expense on the consolidated income statement, totaled $3 million in the first quarter of 2024, $4 million in the first quarter of 2023 and $4 million in the fourth quarter of 2023. Costs to fulfill a contract are capitalized when they relate directly to an existing contract or a specific anticipated contract, generate or enhance resources that will be used to fulfill performance obligations, and are recoverable. Such costs generally represent set-up costs, which include any direct cost incurred at the inception of a contract which enables the fulfillment of the performance obligation, and totaled $91 million at March 31, 2024 and $90 million at Dec. 31, 2023. These capitalized costs are amortized on a straight-line basis over the expected contract period. Unsatisfied performance obligations We do not have any unsatisfied performance obligations other than those that are subject to a practical expedient election under ASC 606, Revenue From Contracts With Customers . The practical expedient election applies to (i) contracts with an original expected length of one year or less, and (ii) contracts for which we recognize revenue at the amount to which we have the right to invoice for services performed.

Net interest income

Net interest income	3 Months Ended
	Mar. 31, 2024
Interest Revenue (Expense), Net [Abstract]
Net interest income	Net interest income The following table provides the components of net interest income presented on the consolidated income statement. Net interest income Quarter ended (in millions) March 31, 2024 Dec. 31, 2023 March 31, 2023 Interest income Deposits with the Federal Reserve and other central banks $ 1,219 $ 1,294 $ 853 Deposits with banks 121 130 140 Federal funds sold and securities purchased under resale agreements 2,433 2,308 991 Loans 1,061 1,064 866 Securities: Taxable 1,193 1,080 1,022 Exempt from federal income taxes — — — Total securities 1,193 1,080 1,022 Trading securities 69 87 70 Total interest income 6,096 5,963 3,942 Interest expense Deposits 2,187 2,108 1,366 Federal funds purchased and securities sold under repurchase agreements 2,243 2,122 892 Trading liabilities 21 35 30 Other borrowed funds 4 6 3 Customer payables 146 148 128 Long-term debt 455 443 395 Total interest expense 5,056 4,862 2,814 Net interest income 1,040 1,101 1,128 Provision for credit losses 27 84 27 Net interest income after provision for credit losses $ 1,013 $ 1,017 $ 1,101

Employee benefit plans

Employee benefit plans	3 Months Ended
	Mar. 31, 2024
Retirement Benefits [Abstract]
Employee benefit plans	Employee benefit plans The components of net periodic benefit (credit) cost are presented below. The service cost component is reflected in staff expense, whereas the remaining components are reflected in other expense. Net periodic benefit (credit) cost Quarter ended March 31, 2024 March 31, 2023 (in millions) Domestic pension benefits Foreign pension benefits Health care benefits Domestic pension benefits Foreign pension benefits Health care benefits Service cost $ — $ 3 $ — $ — $ 3 $ — Interest cost 45 10 1 48 8 1 Expected return on assets (95) (20) (2) (95) (22) (2) Other 6 (1) (2) 2 (3) (3) Net periodic benefit (credit) $ (44) $ (8) $ (3) $ (45) $ (14) $ (4)

Income taxes

Income taxes	3 Months Ended
	Mar. 31, 2024
Income Tax Disclosure [Abstract]
Income taxes	Income taxes BNY Mellon recorded an income tax provision of $297 million (22.4% effective tax rate) in the first quarter of 2024, $306 million (23.8% effective tax rate) in the first quarter of 2023 and $73 million (26.2% effective tax rate) in the fourth quarter of 2023. In accordance with ASU 2023-02, Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method , we elected to account for investments in renewable energy projects that met the eligibility requirement using the proportional amortization method on a retrospective basis. Previously, we used the hypothetical liquidation at book value (“HLBV”) methodology to determine the pre-tax loss that is recognized in each period. This change resulted in an increase in investment and other revenue and an increase in the provision for income taxes on the consolidated income statement. For additional information, see Note 2 and Note 7. Our total tax reserves as of March 31, 2024 were $105 million, compared with $109 million at Dec. 31, 2023. If these tax reserves were unnecessary, $105 million would affect the effective tax rate in future periods. We recognize accrued interest and penalties, if applicable, related to income taxes in income tax expense. Included in the balance sheet at March 31, 2024 is accrued interest, where applicable, of $33 million. The additional tax benefit related to interest for the three months ended March 31, 2024 was $5 million, compared with $1 million for the three months ended March 31, 2023. It is reasonably possible the total reserve for uncertain tax positions could decrease within the next 12 months by approximately $10 million as a result of adjustments related to tax years that are still subject to examination. Our federal income tax returns are closed to examination through 2016. Our New York State and New York City income tax returns are closed to examination through 2014. Our UK income tax returns are closed to examination through 2020.

Variable interest entities

Variable interest entities	3 Months Ended
	Mar. 31, 2024
Securitizations And Variable Interest Entities Disclosure [Abstract]
Variable interest entities	Variable interest entities We have variable interests in variable interest entities (“VIEs”), which include investments in retail, institutional and alternative investment funds. We earn management fees from these funds, as well as performance fees in certain funds, and may also provide start-up capital for new funds. The funds are primarily financed by our customers’ investments in the funds’ equity or debt. Additionally, we invest in qualified affordable housing and renewable energy projects, which are designed to generate a return primarily through the realization of tax credits. The projects, which are structured as limited partnerships and limited liability companies, are also VIEs, but are not consolidated. The following table presents the incremental assets and liabilities included on the consolidated balance sheet as of March 31, 2024 and Dec. 31, 2023. The net assets of any consolidated VIE are solely available to settle the liabilities of the VIE and to settle any investors’ ownership liquidation requests, including any seed capital we invested in the VIE. Consolidated investment management funds March 31, 2024 Dec. 31, 2023 (in millions) Trading assets $ 547 $ 510 Other assets 21 16 Total assets (a) $ 568 $ 526 Other liabilities $ 5 $ 1 Total liabilities (b) $ 5 $ 1 Nonredeemable noncontrolling interests (c) $ 111 $ 50 (a) Includes voting model entities (“VMEs”) with assets of $51 million at March 31, 2024 and $91 million at Dec. 31, 2023. (b) Includes VMEs with liabilities of $1 million at March 31, 2024 and $1 million at Dec. 31, 2023. (c) Includes VMEs with nonredeemable noncontrolling interests of $3 million at March 31, 2024 and $12 million at Dec. 31, 2023. We have not provided financial or other support that was not otherwise contractually required to be provided to our VIEs. Additionally, creditors of any consolidated VIEs do not have any recourse to the general credit of BNY Mellon. Non-consolidated VIEs As of March 31, 2024 and Dec. 31, 2023, assets and liabilities related to the VIEs where we are not the primary beneficiary were included in other assets and other liabilities on the consolidated balance sheet and primarily related to accounting for our investments in qualified affordable housing and renewable energy projects. The maximum loss exposure indicated in the following table relates solely to our investments in, and unfunded commitments to, the VIEs. Non-consolidated VIEs March 31, 2024 Dec. 31, 2023 (in millions) (a) Other assets $ 2,212 $ 2,261 Other liabilities 777 780 Maximum loss exposure 2,990 3,041 (a) Prior period balances were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 for additional information.

Preferred stock

Preferred stock	3 Months Ended
	Mar. 31, 2024
Stockholders' Equity Note [Abstract]
Preferred stock	Preferred stock The Parent has 100 million authorized shares of preferred stock with a par value of $0.01 per share. The following table summarizes the Parent’s preferred stock issued and outstanding at March 31, 2024 and Dec. 31, 2023. Preferred stock summary (a) Total shares issued and outstanding Carrying value (b) (in millions) March 31, 2024 Dec. 31, 2023 March 31, 2024 Dec. 31, 2023 Per annum dividend rate (c) Series A Greater of (i) SOFR plus 0.565% and (ii) 4.000% 5,001 5,001 $ 500 $ 500 Series F 4.625% to but excluding Sept. 20, 2026, then SOFR plus 3.131% 10,000 10,000 990 990 Series G 4.700% to but excluding Sept. 20, 2025, then a floating rate equal to the five-year treasury rate plus 4.358% 10,000 10,000 990 990 Series H 3.700% to but excluding March 20, 2026, then a floating rate equal to the five-year treasury rate plus 3.352% 5,825 5,825 576 576 Series I 3.750% to but excluding Dec. 20, 2026, then a floating rate equal to the five-year treasury rate plus 2.630% 13,000 13,000 1,287 1,287 Total 43,826 43,826 $ 4,343 $ 4,343 (a) All outstanding preferred stock is noncumulative perpetual preferred stock with a liquidation preference of $100,000 per share. (b) The carrying value of the Series F, Series G, Series H and Series I preferred stock is recorded net of issuance costs. (c) References to SOFR are to a floating rate equal to the three-month CME Term SOFR (plus a spread adjustment of 0.26161% per annum). The table below presents the Parent’s preferred dividends. Preferred dividends (dollars in millions, except per share amounts) Depositary shares 1Q24 4Q23 1Q23 Per share Total Per share Total Per share Total Series A 100 (a) $ 1,566.46 $ 8 $ 1,573.41 $ 7 $ 1,327.72 $ 7 Series D 100 N/A N/A 2,052.42 21 (b) — — Series F 100 2,312.50 23 — — 2,312.50 23 Series G 100 2,350.00 24 — — 2,350.00 24 Series H 100 925.00 5 925.00 5 925.00 5 Series I 100 937.50 12 937.50 13 937.50 12 Total $ 72 $ 46 $ 71 (a) Represents Normal Preferred Capital Securities. (b) Includes deferred fees of approximately $10 million related to the redemption of Series D preferred stock. N/A - Not applicable. In December 2023, all of the outstanding shares of the Series D preferred stock were redeemed. All of the outstanding shares of the Series A preferred stock are owned by Mellon Capital IV, a 100% owned finance subsidiary of the Parent, which will pass through any dividend on the Series A preferred stock to the holders of its Normal Preferred Capital Securities. The Parent’s obligations under the trust and other agreements relating to Mellon Capital IV have the effect of providing a full and unconditional guarantee, on a subordinated basis, of payments due on the Normal Preferred Capital Securities. No other subsidiary of the Parent guarantees the securities of Mellon Capital IV.

Other comprehensive income (los

Other comprehensive income (loss)	3 Months Ended
	Mar. 31, 2024
Equity [Abstract]
Other comprehensive income (loss)	Other comprehensive income (loss) Components of other comprehensive income (loss) Quarter ended March 31, 2024 Dec. 31, 2023 March 31, 2023 (in millions) Pre-tax Tax After-tax Pre-tax Tax After-tax Pre-tax Tax After-tax Foreign currency translation: Foreign currency translation adjustments arising during the period (a) $ (44) $ (47) $ (91) $ 172 $ 85 $ 257 $ 77 $ 26 $ 103 Total foreign currency translation (44) (47) (91) 172 85 257 77 26 103 Unrealized gain on assets available-for-sale: Unrealized gain arising during period 137 (34) 103 921 (223) 698 419 (102) 317 Reclassification adjustment (b) 1 — 1 48 (11) 37 1 — 1 Net unrealized gain on assets available-for-sale 138 (34) 104 969 (234) 735 420 (102) 318 Defined benefit plans: Net (loss) arising during the period — — — (107) 32 (75) — — — Foreign exchange adjustment — — — (1) — (1) — — — Amortization of prior service credit, net loss and initial obligation included in net periodic benefit cost (b) 3 — 3 (5) 3 (2) (4) 1 (3) Total defined benefit plans 3 — 3 (113) 35 (78) (4) 1 (3) Unrealized gain (loss) on cash flow hedges: Unrealized hedge gain arising during period 4 (1) 3 1 (1) — 4 (1) 3 Reclassification of net (gain) loss to net income: Foreign exchange (“FX”) contracts – staff expense (2) — (2) (1) — (1) 3 (1) 2 FX contracts – investment and other revenue — — — (1) — (1) — — — Total reclassifications to net income (2) — (2) (2) — (2) 3 (1) 2 Net unrealized gain (loss) on cash flow hedges 2 (1) 1 (1) (1) (2) 7 (2) 5 Total other comprehensive income $ 99 $ (82) $ 17 $ 1,027 $ (115) $ 912 $ 500 $ (77) $ 423 (a) Includes the impact of hedges of net investments in foreign subsidiaries. See Note 17 for additional information.

Fair value measurement

Fair value measurement	3 Months Ended
	Mar. 31, 2024
Fair Value Disclosures [Abstract]
Fair value measurement	Fair value measurement Fair value is defined as the price that would be received to sell an asset, or paid to transfer a liability, in an orderly transaction between market participants at the measurement date. A three-level hierarchy for fair value measurements is utilized based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. BNY Mellon’s own creditworthiness is considered when valuing liabilities. See Note 20 of the Notes to Consolidated Financial Statements in our 2023 Annual Report for information on how we determine fair value and the fair value hierarchy. The following tables present the financial instruments carried at fair value at March 31, 2024 and Dec. 31, 2023, by caption on the consolidated balance sheet and by the three-level valuation hierarchy. We have included credit ratings information in certain of the tables because the information indicates the degree of credit risk to which we are exposed, and significant changes in ratings classifications could result in increased risk for us. Assets and liabilities measured at fair value on a recurring basis at March 31, 2024 Total carrying (dollars in millions) Level 1 Level 2 Level 3 Netting (a) Assets: Available-for-sale securities: Non-U.S. government (b) $ 3,880 $ 20,437 $ — $ — $ 24,317 U.S. Treasury 20,188 — — — 20,188 Agency RMBS — 16,617 — — 16,617 Agency commercial MBS — 7,584 — — 7,584 Foreign covered bonds — 7,261 — — 7,261 CLOs — 6,265 — — 6,265 Non-agency commercial MBS — 2,934 — — 2,934 U.S. government agencies — 2,736 — — 2,736 Non-agency RMBS — 1,703 — — 1,703 Other ABS — 899 — — 899 Other debt securities — 1 — — 1 Total available-for-sale securities 24,068 66,437 — — 90,505 Trading assets: Debt instruments 1,793 1,919 — — 3,712 Equity instruments 5,060 — — — 5,060 Derivative assets not designated as hedging: Interest rate 8 947 — (853) 102 Foreign exchange — 4,668 — (3,464) 1,204 Equity and other contracts — 7 — (7) — Total derivative assets not designated as hedging 8 5,622 — (4,324) 1,306 Total trading assets 6,861 7,541 — (4,324) 10,078 Other assets: Derivative assets designated as hedging: Interest rate — 278 — — 278 Foreign exchange — 106 — — 106 Total derivative assets designated as hedging — 384 — — 384 Other assets (c) 431 456 — — 887 Total other assets 431 840 — — 1,271 Assets measured at NAV (c) 166 Total assets $ 31,360 $ 74,818 $ — $ (4,324) $ 102,020 Percentage of total assets prior to netting 30 % 70 % — % Liabilities: Trading liabilities: Debt instruments $ 1,362 $ 30 $ — $ — $ 1,392 Equity instruments 20 — — — 20 Derivative liabilities not designated as hedging: Interest rate 2 1,306 — (536) 772 Foreign exchange — 4,380 — (3,517) 863 Equity and other contracts 3 98 — (48) 53 Total derivative liabilities not designated as hedging 5 5,784 — (4,101) 1,688 Total trading liabilities 1,387 5,814 — (4,101) 3,100 Other liabilities: Derivative liabilities designated as hedging: Foreign exchange — 48 — — 48 Total derivative liabilities designated as hedging — 48 — — 48 Other liabilities — 22 — — 22 Total other liabilities — 70 — — 70 Total liabilities $ 1,387 $ 5,884 $ — $ (4,101) $ 3,170 Percentage of total liabilities prior to netting 19 % 81 % — % (a) ASC 815, Derivatives and Hedging, permits the netting of derivative receivables and derivative payables under legally enforceable master netting agreements and permits the netting of cash collateral. Netting is applicable to derivatives not designated as hedging instruments included in trading assets or trading liabilities and derivatives designated as hedging instruments included in other assets or other liabilities. Netting is allocated to the derivative products based on the net fair value of each product. (b) Includes supranational securities. (c) Includes seed capital, private equity investments and other assets. Assets and liabilities measured at fair value on a recurring basis at Dec. 31, 2023 Total carrying (dollars in millions) Level 1 Level 2 Level 3 Netting (a) Assets: Available-for-sale securities: Non-U.S. government (b) $ 2,439 $ 15,943 $ — $ — $ 18,382 U.S. Treasury 16,604 — — — 16,604 Agency RMBS — 13,111 — — 13,111 Agency commercial MBS — 7,729 — — 7,729 Foreign covered bonds — 6,334 — — 6,334 CLOs — 6,137 — — 6,137 Non-agency commercial MBS — 2,935 — — 2,935 U.S. government agencies — 2,901 — — 2,901 Non-agency RMBS — 1,740 — — 1,740 Other ABS — 943 — — 943 Other debt securities — 1 — — 1 Total available-for-sale securities 19,043 57,774 — — 76,817 Trading assets: Debt instruments 1,246 2,255 — — 3,501 Equity instruments 4,518 — — — 4,518 Derivative assets not designated as hedging: Interest rate 7 1,053 — (751) 309 Foreign exchange — 9,227 — (7,498) 1,729 Equity and other contracts — 8 — (7) 1 Total derivative assets not designated as hedging 7 10,288 — (8,256) 2,039 Total trading assets 5,771 12,543 — (8,256) 10,058 Other assets : Derivative assets designated as hedging: Interest rate — 214 — — 214 Foreign exchange — 22 — — 22 Total derivative assets designated as hedging — 236 — — 236 Other assets (c) 486 386 — — 872 Total other assets 486 622 — — 1,108 Assets measured at NAV (c) 153 Total assets $ 25,300 $ 70,939 $ — $ (8,256) $ 88,136 Percentage of total assets prior to netting 26 % 74 % — % Liabilities: Trading liabilities: Debt instruments $ 2,508 $ 12 $ — $ — $ 2,520 Equity instruments 23 — — — 23 Derivative liabilities not designated as hedging: Interest rate 8 1,339 — (635) 712 Foreign exchange — 9,282 — (6,341) 2,941 Equity and other contracts 9 135 — (114) 30 Total derivative liabilities not designated as hedging 17 10,756 — (7,090) 3,683 Total trading liabilities 2,548 10,768 — (7,090) 6,226 Other liabilities: Derivative liabilities designated as hedging: Foreign exchange — 173 — — 173 Total derivative liabilities designated as hedging — 173 — — 173 Other liabilities — 22 — — 22 Total other liabilities — 195 — — 195 Total liabilities $ 2,548 $ 10,963 $ — $ (7,090) $ 6,421 Percentage of total liabilities prior to netting 19 % 81 % — % (a) ASC 815, Derivatives and Hedging, permits the netting of derivative receivables and derivative payables under legally enforceable master netting agreements and permits the netting of cash collateral. Netting is applicable to derivatives not designated as hedging instruments included in trading assets or trading liabilities and derivatives designated as hedging instruments included in other assets or other liabilities. Netting is allocated to the derivative products based on the net fair value of each product. (b) Includes supranational securities. (c) Includes seed capital, private equity investments and other assets. Details of certain available-for-sale securities measured at fair value on a recurring basis March 31, 2024 Dec. 31, 2023 Total carrying value (b) Ratings (a) Total carrying value (b) Ratings (a) AAA/ A+/ BBB+/ BB+ and Not rated AAA/ A+/ BBB+/ BB+ and Not rated (dollars in millions) Non-agency RMBS, originated in: 2008-2024 $ 1,459 100 % — % — % — % — % $ 1,487 100 % — % — % — % — % 2007 and earlier 244 5 12 1 40 42 253 5 13 1 40 41 Total non-agency RMBS $ 1,703 86 % 2 % — % 6 % 6 % $ 1,740 86 % 2 % — % 6 % 6 % Non-agency commercial MBS originated in: 2009-2023 $ 2,934 100 % — % — % — % — % $ 2,935 100 % — % — % — % — % Foreign covered bonds: Canada $ 2,454 100 % — % — % — % — % $ 2,473 100 % — % — % — % — % UK 1,115 100 — — — — 1,035 100 — — — — Australia 659 100 — — — — 689 100 — — — — Germany 647 100 — — — — 664 100 — — — — Other 2,386 100 — — — — 1,473 100 — — — — Total foreign covered bonds $ 7,261 100 % — % — % — % — % $ 6,334 100 % — % — % — % — % Non-U.S. government: Germany $ 2,712 100 % — % — % — % — % $ 2,658 100 % — % — % — % — % UK 2,211 100 — — — — 1,316 100 — — — — France 1,832 100 — — — — 1,562 100 — — — — Canada 1,601 90 10 — — — 1,336 95 5 — — — Belgium 868 100 — — — — 511 100 — — — — Spain 612 — 8 92 — — 293 — 17 83 — — Finland 515 100 — — — — 282 100 — — — — Singapore 500 100 — — — — 302 100 — — — — Japan 449 — 100 — — — 410 — 100 — — — Netherlands 442 100 — — — — 334 100 — — — — Norway 374 100 — — — — 374 100 — — — — Other (c) 1,645 61 17 13 9 — 1,348 70 3 17 10 — Supranational 10,556 100 — — — — 7,656 100 — — — — Total non-U.S. government: $ 24,317 92 % 4 % 3 % 1 % — % $ 18,382 94 % 3 % 2 % 1 % — % (a) Represents ratings by S&P or the equivalent. (b) At March 31, 2024 and Dec. 31, 2023, non-U.S. government securities were included in Level 1 and Level 2 in the valuation hierarchy. All other assets in the table are Level 2 assets in the valuation hierarchy. (c) Includes non-investment grade non-U.S. securities related to Brazil of $146 million at March 31, 2024 and $140 million at Dec. 31, 2023. Assets and liabilities measured at fair value on a nonrecurring basis Under certain circumstances, we make adjustments to the fair value of our assets, liabilities and unfunded lending-related commitments, although they are not measured at fair value on an ongoing basis. The following table presents the carrying value as of March 31, 2024 and Dec. 31, 2023 of financial instruments for which nonrecurring adjustments to fair value have been recorded during 2024 and/or 2023 and all non-readily marketable equity securities carried at cost with upward or downward adjustments by balance sheet caption and level in the fair value hierarchy. Assets measured at fair value on a nonrecurring basis March 31, 2024 Dec. 31, 2023 Total carrying Total carrying (in millions) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Loans (a) $ — $ 27 $ — $ 27 $ — $ 28 $ — $ 28 Other assets (b) — 495 — 495 — 481 — 481 Total assets at fair value on a nonrecurring basis $ — $ 522 $ — $ 522 $ — $ 509 $ — $ 509 (a) The fair value of these loans was unchanged in the first quarter of 2024 and the fourth quarter of 2023, based on the fair value of the underlying collateral, as required by guidance in ASC 326, Financial Instruments – Credit Losses, with an offset to the allowance for credit losses. (b) Includes non-readily marketable equity securities carried at cost with upward or downward adjustments and other assets received in satisfaction of debt. Estimated fair value of financial instruments The following tables present the estimated fair value and the carrying amount of financial instruments not carried at fair value on the consolidated balance sheet at March 31, 2024 and Dec. 31, 2023, by caption on the consolidated balance sheet and by the valuation hierarchy. Summary of financial instruments March 31, 2024 (in millions) Level 1 Level 2 Level 3 Total Carrying Assets: Interest-bearing deposits with the Federal Reserve and other central banks $ — $ 119,197 $ — $ 119,197 $ 119,197 Interest-bearing deposits with banks — 10,647 — 10,647 10,636 Federal funds sold and securities purchased under resale agreements — 29,661 — 29,661 29,661 Securities held-to-maturity 9,162 34,051 — 43,213 48,404 Loans (a) — 71,851 — 71,851 72,694 Other financial assets 5,305 2,359 — 7,664 7,664 Total $ 14,467 $ 267,766 $ — $ 282,233 $ 288,256 Liabilities: Noninterest-bearing deposits $ — $ 63,405 $ — $ 63,405 $ 63,405 Interest-bearing deposits — 241,685 — 241,685 245,615 Federal funds purchased and securities sold under repurchase agreements — 15,112 — 15,112 15,112 Payables to customers and broker-dealers — 19,392 — 19,392 19,392 Borrowings — 1,202 — 1,202 1,202 Long-term debt — 31,549 — 31,549 32,396 Total $ — $ 372,345 $ — $ 372,345 $ 377,122 (a) Does not include the leasing portfolio. Summary of financial instruments Dec. 31, 2023 (in millions) Level 1 Level 2 Level 3 Total estimated Carrying Assets: Interest-bearing deposits with the Federal Reserve and other central banks $ — $ 111,550 $ — $ 111,550 $ 111,550 Interest-bearing deposits with banks — 12,134 — 12,134 12,139 Federal funds sold and securities purchased under resale agreements — 28,900 — 28,900 28,900 Securities held-to-maturity 9,545 35,166 — 44,711 49,578 Loans (a) — 65,026 — 65,026 65,977 Other financial assets 4,922 2,149 — 7,071 7,071 Total $ 14,467 $ 254,925 $ — $ 269,392 $ 275,215 Liabilities: Noninterest-bearing deposits $ — $ 58,274 $ — $ 58,274 $ 58,274 Interest-bearing deposits — 221,463 — 221,463 225,395 Federal funds purchased and securities sold under repurchase agreements — 14,507 — 14,507 14,507 Payables to customers and broker-dealers — 18,395 — 18,395 18,395 Borrowings — 1,274 — 1,274 1,274 Long-term debt — 30,596 — 30,596 31,257 Total $ — $ 344,509 $ — $ 344,509 $ 349,102 (a) Does not include the leasing portfolio.

Fair value option

Fair value option	3 Months Ended
	Mar. 31, 2024
Fair Value Disclosures [Abstract]
Fair value option	Fair value option We elected fair value as an alternative measurement for selected financial assets and liabilities that are not otherwise required to be measured at fair value, including the assets and liabilities of consolidated investment management funds and subordinated notes associated with certain equity investments. The following table presents the assets and liabilities of consolidated investment management funds, at fair value. Assets and liabilities of consolidated investment management funds, at fair value March 31, 2024 Dec. 31, 2023 (in millions) Assets of consolidated investment management funds: Trading assets $ 547 $ 510 Other assets 21 16 Total assets of consolidated investment management funds $ 568 $ 526 Liabilities of consolidated investment management funds: Other liabilities $ 5 $ 1 Total liabilities of consolidated investment management funds $ 5 $ 1 The assets and liabilities of the consolidated investment management funds are included in other assets and other liabilities, respectively, on the consolidated balance sheet. We value the assets and liabilities of consolidated investment management funds using quoted prices for identical assets or liabilities in active markets or observable inputs such as quoted prices for similar assets or liabilities. Quoted prices for either identical or similar assets or liabilities in inactive markets may also be used. Accordingly, fair value best reflects the interests BNY Mellon holds in the economic performance of the consolidated investment management funds. Changes in the fair value of the assets and liabilities are recorded as income (loss) from consolidated investment management funds, which is included in investment and other revenue on the consolidated income statement. We elected the fair value option on subordinated notes associated with certain equity investments. The fair value of these subordinated notes was $4 million at March 31, 2024 and $4 million at Dec. 31, 2023. The subordinated notes were valued using observable market inputs and included in Level 2 of the valuation hierarchy.

Derivative instruments

Derivative instruments	3 Months Ended
	Mar. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative instruments	Derivative instruments We use derivatives to manage exposure to market risk, including interest rate risk, equity price risk and foreign currency risk, as well as credit risk. Our trading activities are focused on acting as a market-maker for our customers and facilitating customer trades in compliance with the Volcker Rule. The notional amounts for derivative financial instruments express the dollar volume of the transactions; however, credit risk is much smaller. We perform credit reviews and enter into netting agreements and collateral arrangements to minimize the credit risk of derivative financial instruments. We enter into offsetting positions to reduce exposure to foreign currency, interest rate and equity price risk. Use of derivative financial instruments involves reliance on counterparties. Failure of a counterparty to honor its obligation under a derivative contract is a risk we assume whenever we engage in a derivative contract. There were no counterparty default losses recorded in the first quarter of 2024. Hedging derivatives We utilize interest rate swap agreements to manage our exposure to interest rate fluctuations. We enter into fair value hedges as an interest rate risk management strategy to reduce fair value variability by converting certain fixed rate interest payments associated with available-for-sale securities, loans and long-term debt to floating interest rates. We also utilize interest rate swaps and forward exchange contracts as cash flow hedges to manage our exposure to interest rate and foreign exchange rate changes. The available-for-sale securities hedged consist of U.S. Treasury, agency and non-agency commercial MBS, non-U.S. government and foreign covered bonds. At March 31, 2024, $33.6 billion par value of available-for-sale securities was hedged with interest rate swaps designated as fair value hedges that had notional values of $33.6 billion. At March 31, 2024, $250 million of interest rate swaps was designated as portfolio layer method fair value hedges of loans against a closed portfolio of fixed rate loans of $3.3 billion, essentially converting $250 million of such fixed rate loans to a floating rate. The fixed rate long-term debt instruments hedged generally have original maturities of five In addition, we utilize forward foreign exchange contracts as hedges to mitigate foreign exchange exposures. We use forward foreign exchange contracts as cash flow hedges to convert certain forecasted non-U.S. dollar revenue and expenses into U.S. dollars. We use forward foreign exchange contracts with maturities of 15 months or less as cash flow hedges to hedge our foreign exchange exposure to currencies such as the Indian rupee, Polish zloty, Hong Kong dollar, Singapore dollar, British pound and euro used in revenue and expense transactions for entities that have the U.S. dollar as their functional currency. As of March 31, 2024, the hedged forecasted foreign currency transactions and designated forward foreign exchange contract hedges were $689 million (notional), with a net pre-tax gain of $5 million recorded in accumulated other comprehensive income (“OCI”). Over the next 12 months, a gain of $5 million will be reclassified into earnings. From time to time, we have utilized forward foreign exchange contracts as fair value hedges of the foreign exchange risk associated with available-for-sale securities. Forward points are designated as an excluded component and amortized into earnings over the hedge period. At March 31, 2024, there were no remaining foreign exchange contracts. Forward foreign exchange contracts are also used to hedge the value of our net investments in foreign subsidiaries. These forward foreign exchange contracts have maturities of less than one year. The derivatives employed are designated as hedges of changes in value of our foreign investments due to exchange rates. The change in fair market value of these forward foreign exchange contracts is reported within foreign currency translation adjustments in shareholders’ equity, net of tax. At March 31, 2024, forward foreign exchange contracts with notional amounts totaling $10.6 billion were designated as net investment hedges. From time to time, we also designate non-derivative financial instruments as hedges of our net investments in foreign subsidiaries. At March 31, 2024, there were no non-derivative financial instruments hedging our net investments in foreign subsidiaries. The following table presents the pre-tax gains (losses) related to our fair value and cash flow hedging activities recognized in the consolidated income statement. Income statement impact of fair value and cash flow hedges (in millions) Location of gains (losses) 1Q24 4Q23 1Q23 Interest rate fair value hedges of available-for-sale securities Derivative Interest income $ 449 $ (1,023) $ (435) Hedged item Interest income (449) 1,022 434 Interest rate fair value hedges of long-term debt Derivative Interest expense (221) 645 279 Hedged item Interest expense 221 (645) (279) Interest rate fair value hedges of loans Derivative Interest expense (1) — — Hedged item Interest expense 1 — — Cash flow hedges of forecasted FX exposures Gain (loss) reclassified from OCI into income Staff expense 2 1 (3) Gain reclassified from OCI into income Investment and other revenue — 1 — Gain (loss) recognized in the consolidated income statement due to fair value and cash flow hedging relationships $ 2 $ 1 $ (4) The following table presents the impact of hedging derivatives used in net investment hedging relationships. Impact of derivative instruments used in net investment hedging relationships (in millions) Derivatives in net investment hedging relationships Gain or (loss) recognized in accumulated OCI on derivatives Location of gain or (loss) reclassified from accumulated OCI into income Gain or (loss) reclassified from accumulated OCI into income 1Q24 4Q23 1Q23 1Q24 4Q23 1Q23 FX contracts $ 198 $ (355) $ (111) Net interest income $ — $ — $ — The following table presents information on the hedged items in fair value hedging relationships. Hedged items in fair value hedging relationships Carrying amount of hedged Hedge accounting basis adjustment increase (decrease) (a) (in millions) March 31, 2024 Dec. 31, 2023 March 31, 2024 Dec. 31, 2023 Available-for-sale securities (b)(c) $ 33,228 $ 29,941 $ (2,161) $ (1,767) Loans (d) $ 251 $ — $ 1 $ — Long-term debt $ 22,288 $ 21,854 $ (1,062) $ (846) (a) Includes $405 million and $434 million of basis adjustment decreases on discontinued hedges associated with available-for-sale securities at March 31, 2024 and Dec. 31, 2023, respectively, and $21 million and $26 million of basis adjustment decreases on discontinued hedges associated with long-term debt at March 31, 2024 and Dec. 31, 2023, respectively. (b) Carrying amount represents the amortized cost. (c) At March 31, 2024, the amortized cost of the available-for-sale securities included in closed portfolios subject to portfolio layer method hedging was $5.3 billion, of which $2.5 billion was designated as hedged. The cumulative basis adjustments for active hedging relationships associated with such hedges as of March 31, 2024 was a decrease of $12 million. (d) At March 31, 2024, loans included in closed portfolios subject to portfolio layer method hedging was $3.3 billion, of which $250 million was designated as hedged. The cumulative basis adjustment for active hedging relationships associated with such hedged as of March 31, 2024 was an increase of $1 million. The following table summarizes the notional amount and carrying values of our total derivative portfolio. Impact of derivative instruments on the balance sheet Notional value Asset derivatives Liability derivatives March 31, 2024 Dec. 31, 2023 March 31, 2024 Dec. 31, 2023 March 31, 2024 Dec. 31, 2023 (in millions) Derivatives designated as hedging instruments: (a)(b) Interest rate contracts $ 57,161 $ 52,808 $ 278 $ 214 $ — $ — Foreign exchange contracts 11,243 11,099 106 22 48 173 Total derivatives designated as hedging instruments $ 384 $ 236 $ 48 $ 173 Derivatives not designated as hedging instruments: (b)(c) Interest rate contracts $ 157,599 $ 155,535 $ 955 $ 1,060 $ 1,308 $ 1,347 Foreign exchange contracts 1,016,850 944,241 4,668 9,227 4,380 9,282 Equity contracts 4,351 3,886 7 8 96 138 Credit contracts 255 220 — — 5 6 Total derivatives not designated as hedging instruments $ 5,630 $ 10,295 $ 5,789 $ 10,773 Total derivatives fair value (d) $ 6,014 $ 10,531 $ 5,837 $ 10,946 Effect of master netting agreements (e) (4,324) (8,256) (4,101) (7,090) Fair value after effect of master netting agreements $ 1,690 $ 2,275 $ 1,736 $ 3,856 (a) The fair value of asset derivatives and liability derivatives designated as hedging instruments is recorded as other assets and other liabilities, respectively, on the consolidated balance sheet. (b) For derivative transactions settled at clearing organizations, cash collateral exchanged is deemed a settlement of the derivative each day. The settlement reduces the gross fair value of derivative assets and liabilities and results in a corresponding decrease in the effect of master netting agreements, with no impact to the consolidated balance sheet. (c) The fair value of asset derivatives and liability derivatives not designated as hedging instruments is recorded as trading assets and trading liabilities, respectively, on the consolidated balance sheet. (d) Fair values are on a gross basis, before consideration of master netting agreements, as required by ASC 815, Derivatives and Hedging. (e) Effect of master netting agreements includes cash collateral received and paid of $998 million and $775 million, respectively, at March 31, 2024, and $2,353 million and $1,187 million, respectively, at Dec. 31, 2023. Trading activities (including trading derivatives) Our trading activities are focused on acting as a market-maker for our customers, facilitating customer trades and risk-mitigating economic hedging in compliance with the Volcker Rule. The change in the fair value of the derivatives utilized in our trading activities is recorded in foreign exchange revenue and investment and other revenue on the consolidated income statement. The following table presents our foreign exchange revenue and other trading revenue. Foreign exchange revenue and other trading revenue (in millions) 1Q24 4Q23 1Q23 Foreign exchange revenue $ 152 $ 143 $ 176 Other trading revenue 69 47 45 Foreign exchange revenue includes income from purchasing and selling foreign currencies, currency forwards, futures and options as well as foreign currency remeasurement. Other trading revenue reflects results from trading in cash instruments, including fixed income and equity securities, and trading and economic hedging activity with non-foreign exchange derivatives. We also use derivative financial instruments as risk-mitigating economic hedges, which are not formally designated as accounting hedges. This includes hedging the foreign currency, interest rate or market risks inherent in some of our balance sheet exposures, such as seed capital investments and deposits, as well as certain investment management fee revenue streams. We also use total return swaps to economically hedge obligations arising from the Company’s deferred compensation plan whereby the participants defer compensation and earn a return linked to the performance of investments they select. The gains or losses on these total return swaps are recorded in staff expense on the consolidated income statement and was a gain of $11 million in the first quarter of 2024, $7 million in the first quarter of 2023 and $18 million in the fourth quarter of 2023. We manage trading risk through a system of position limits, a value-at-risk (“VaR”) methodology based on historical simulation and other market sensitivity measures. Risk is monitored and reported to senior management by a separate unit, independent from trading, on a daily basis. Based on certain assumptions, the VaR methodology is designed to capture the potential overnight pre-tax dollar loss from adverse changes in fair values of all trading positions. The calculation assumes a one VaR methodology does not evaluate risk attributable to extraordinary financial, economic or other occurrences. As a result, the risk assessment process includes a number of stress scenarios based upon the risk factors in the portfolio and management’s assessment of market conditions. Additional stress scenarios based upon historical market events are also performed. Stress tests may incorporate the impact of reduced market liquidity and the breakdown of historically observed correlations and extreme scenarios. VaR and other statistical measures, stress testing and sensitivity analysis are incorporated into other risk management materials. Counterparty credit risk and collateral We assess the credit risk of our counterparties through regular examination of their financial statements, confidential communication with the management of those counterparties and regular monitoring of publicly available credit rating information. This and other information is used to develop proprietary credit rating metrics used to assess credit quality. Collateral requirements are determined after a comprehensive review of the credit quality of each counterparty. Collateral is generally held or pledged in the form of cash and/or highly liquid government securities. Collateral requirements are monitored and adjusted daily. Additional disclosures concerning derivative financial instruments are provided in Note 15. Disclosure of contingent features in over-the-counter (“OTC”) derivative instruments Certain OTC derivative contracts and/or collateral agreements contain credit risk-contingent features triggered upon a rating downgrade in which the counterparty has the right to request additional collateral or the right to terminate the contracts in a net liability position. The following table shows the aggregate fair value of OTC derivative contracts in net liability positions that contained credit risk-contingent features and the value of collateral that has been posted. March 31, 2024 Dec. 31, 2023 (in millions) Aggregate fair value of OTC derivatives in net liability positions (a) $ 1,002 $ 1,003 Collateral posted $ 1,009 $ 1,001 (a) Before consideration of cash collateral. The aggregate fair value of OTC derivative contracts containing credit risk-contingent features can fluctuate from quarter to quarter due to changes in market conditions, composition of counterparty trades, new business or changes to the contingent features. The Bank of New York Mellon, our largest banking subsidiary, enters into the substantial majority of our OTC derivative contracts and/or collateral agreements. As such, the contingent features may be triggered if The Bank of New York Mellon’s long-term issuer rating were downgraded. The following table shows the fair value of contracts falling under early termination provisions that were in net liability positions for three key ratings triggers. Potential close-out exposures (fair value) (a) March 31, 2024 Dec. 31, 2023 (in millions) If The Bank of New York Mellon’s rating changed to: (b) A3/A- $ 82 $ 115 Baa2/BBB $ 418 $ 792 Ba1/BB+ $ 968 $ 1,920 (a) The amounts represent potential total close-out values if The Bank of New York Mellon’s long-term issuer rating were to immediately drop to the indicated levels, and do not reflect collateral posted. (b) Represents ratings by Moody’s/S&P. If The Bank of New York Mellon’s debt rating had fallen below investment grade on March 31, 2024 and Dec. 31, 2023, existing collateral arrangements would have required us to post additional collateral of $283 million and $235 million, respectively. Offsetting assets and liabilities The following tables present derivative and financial instruments and their related offsets. There were no derivative instruments or financial instruments subject to a legally enforceable netting agreement for which we are not currently netting. Offsetting of derivative assets and financial assets at March 31, 2024 Gross assets recognized Gross amounts offset in the balance sheet Net assets recognized in the balance sheet Gross amounts not offset in the balance sheet (in millions) (a) Financial instruments Cash collateral received Net amount Derivatives subject to netting arrangements: Interest rate contracts $ 1,016 $ 853 $ 163 $ 31 $ — $ 132 Foreign exchange contracts 4,546 3,464 1,082 62 — 1,020 Equity and other contracts 7 7 — — — — Total derivatives subject to netting arrangements 5,569 4,324 1,245 93 — 1,152 Total derivatives not subject to netting arrangements 445 — 445 — — 445 Total derivatives 6,014 4,324 1,690 93 — 1,597 Reverse repurchase agreements 179,182 162,579 (b) 16,603 16,581 — 22 Securities borrowing 13,058 — 13,058 12,365 — 693 Total $ 198,254 $ 166,903 $ 31,351 $ 29,039 $ — $ 2,312 (a) Includes the effect of netting agreements and net cash collateral received. The offset related to the OTC derivatives was allocated to the various types of derivatives based on the net positions. (b) Offsetting of reverse repurchase agreements relates to our involvement in the Fixed Income Clearing Corporation (“FICC”), where we settle government securities transactions on a net basis for payment and delivery through the Fedwire system. Offsetting of derivative assets and financial assets at Dec. 31, 2023 Gross assets recognized Gross amounts offset in the balance sheet Net assets recognized Gross amounts not offset in the balance sheet (in millions) (a) Financial instruments Cash collateral received Net amount Derivatives subject to netting arrangements: Interest rate contracts $ 979 $ 751 $ 228 $ 60 $ — $ 168 Foreign exchange contracts 8,552 7,498 1,054 320 — 734 Equity and other contracts 7 7 — — — — Total derivatives subject to netting arrangements 9,538 8,256 1,282 380 — 902 Total derivatives not subject to netting arrangements 993 — 993 — — 993 Total derivatives 10,531 8,256 2,275 380 — 1,895 Reverse repurchase agreements 169,092 150,667 (b) 18,425 18,422 — 3 Securities borrowing 10,475 — 10,475 10,011 — 464 Total $ 190,098 $ 158,923 $ 31,175 $ 28,813 $ — $ 2,362 (a) Includes the effect of netting agreements and net cash collateral received. The offset related to the OTC derivatives was allocated to the various types of derivatives based on the net positions. (b) Offsetting of reverse repurchase agreements relates to our involvement in the FICC, where we settle government securities transactions on a net basis for payment and delivery through the Fedwire system. Offsetting of derivative liabilities and financial liabilities at March 31, 2024 Net liabilities recognized in the balance sheet Gross liabilities recognized Gross amounts offset in the balance sheet Gross amounts not offset in the balance sheet (in millions) (a) Financial instruments Cash collateral pledged Net amount Derivatives subject to netting arrangements: Interest rate contracts $ 1,002 $ 536 $ 466 $ 55 $ — $ 411 Foreign exchange contracts 4,205 3,517 688 150 — 538 Equity and other contracts 90 48 42 18 — 24 Total derivatives subject to netting arrangements 5,297 4,101 1,196 223 — 973 Total derivatives not subject to netting arrangements 540 — 540 — — 540 Total derivatives 5,837 4,101 1,736 223 — 1,513 Repurchase agreements 174,752 162,579 (b) 12,173 12,156 17 — Securities lending 2,939 — 2,939 2,839 — 100 Total $ 183,528 $ 166,680 $ 16,848 $ 15,218 $ 17 $ 1,613 (a) Includes the effect of netting agreements and net cash collateral paid. The offset related to the OTC derivatives was allocated to the various types of derivatives based on the net positions. (b) Offsetting of repurchase agreements relates to our involvement in the FICC, where we settle government securities transactions on a net basis for payment and delivery through the Fedwire system. Offsetting of derivative liabilities and financial liabilities at Dec. 31, 2023 Net liabilities recognized Gross liabilities recognized Gross amounts offset in the balance sheet Gross amounts not offset in the balance sheet (in millions) (a) Financial instruments Cash collateral pledged Net amount Derivatives subject to netting arrangements: Interest rate contracts $ 1,118 $ 635 $ 483 $ 78 $ — $ 405 Foreign exchange contracts 8,454 6,341 2,113 93 — 2,020 Equity and other contracts 128 114 14 — — 14 Total derivatives subject to netting arrangements 9,700 7,090 2,610 171 — 2,439 Total derivatives not subject to netting arrangements 1,246 — 1,246 — — 1,246 Total derivatives 10,946 7,090 3,856 171 — 3,685 Repurchase agreements 162,661 150,667 (b) 11,994 11,966 28 — Securities lending 2,513 — 2,513 2,404 — 109 Total $ 176,120 $ 157,757 $ 18,363 $ 14,541 $ 28 $ 3,794 (a) Includes the effect of netting agreements and net cash collateral paid. The offset related to the OTC derivatives was allocated to the various types of derivatives based on the net positions. (b) Offsetting of repurchase agreements relates to our involvement in the FICC, where we settle government securities transactions on a net basis for payment and delivery through the Fedwire system. Secured borrowings The following table presents the contract value of repurchase agreements and securities lending transactions accounted for as secured borrowings by the type of collateral provided to counterparties. Repurchase agreements and securities lending transactions accounted for as secured borrowings March 31, 2024 Dec. 31, 2023 Remaining contractual maturity Total Remaining contractual maturity Total (in millions) Overnight and continuous Up to 30 days 30-90 days Over 90 days Overnight and continuous Up to 30 days 30-90 days Over 90 Repurchase agreements: U.S. Treasury $ 135,849 $ 50 $ 1,613 $ 398 $ 137,910 $ 128,304 $ 15 $ 1,409 $ 510 $ 130,238 Agency RMBS 28,705 1 814 419 29,939 25,815 — 896 120 26,831 Sovereign debt/sovereign guaranteed 912 1,649 — — 2,561 1,049 — — — 1,049 Corporate bonds 97 121 1,348 583 2,149 103 72 1,315 590 2,080 State and political subdivisions 43 33 496 241 813 37 38 449 257 781 U.S. government agencies 28 — 122 62 212 44 — 61 32 137 Other debt securities 106 100 49 2 257 4 180 73 24 281 Equity securities — 44 533 334 911 — 10 1,172 82 1,264 Total $ 165,740 $ 1,998 $ 4,975 $ 2,039 $ 174,752 $ 155,356 $ 315 $ 5,375 $ 1,615 $ 162,661 Securities lending: Agency RMBS $ 103 $ — $ — $ — $ 103 $ 111 $ — $ — $ — $ 111 Other debt securities 45 — — — 45 25 — — — 25 Equity securities 2,791 — — — 2,791 2,377 — — — 2,377 Total $ 2,939 $ — $ — $ — $ 2,939 $ 2,513 $ — $ — $ — $ 2,513 Total secured borrowings $ 168,679 $ 1,998 $ 4,975 $ 2,039 $ 177,691 $ 157,869 $ 315 $ 5,375 $ 1,615 $ 165,174 BNY Mellon’s repurchase agreements and securities lending transactions primarily encounter risk associated with liquidity. We are required to pledge collateral based on predetermined terms within the agreements. If we were to experience a decline in the fair value of the collateral pledged for these transactions, we could be required to provide additional collateral to the counterparty, therefore decreasing the amount of assets available for other liquidity needs that may arise. BNY Mellon also offers tri-party collateral agency services in the tri-party repo market where we are exposed to credit risk. In order to mitigate this risk, we require dealers to fully secure intraday credit.

Commitments and contingent liab

Commitments and contingent liabilities	3 Months Ended
	Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and contingent liabilities	Commitments and contingent liabilities Off-balance sheet arrangements In the normal course of business, various commitments and contingent liabilities are outstanding that are not reflected in the accompanying consolidated balance sheets. Our significant trading and off-balance sheet risks are securities, foreign currency and interest rate risk management products, commercial lending commitments, letters of credit and securities lending indemnifications. We assume these risks to reduce interest rate and foreign currency risks, to provide customers with the ability to meet credit and liquidity needs and to hedge foreign currency and interest rate risks. These items involve, to varying degrees, credit, foreign currency and interest rate risks not recognized on the balance sheet. Our off-balance sheet risks are managed and monitored in manners similar to those used for on-balance sheet risks. The following table presents a summary of our off-balance sheet credit risks. Off-balance sheet credit risks March 31, 2024 Dec. 31, 2023 (in millions) Lending commitments $ 49,872 $ 46,518 Standby letters of credit (“SBLC”) (a) 1,694 1,816 Commercial letters of credit 66 41 Securities lending indemnifications (b)(c) 541,366 492,739 (a) Net of participations totaling $135 million at March 31, 2024 and $163 million at Dec. 31, 2023. (b) Excludes the indemnification for securities for which BNY Mellon acts as an agent on behalf of CIBC Mellon clients, which totaled $59 billion at March 31, 2024 and $59 billion at Dec. 31, 2023. (c) Includes cash collateral, invested in indemnified repurchase agreements, held by us as securities lending agent of $58 billion at March 31, 2024 and $45 billion at Dec. 31, 2023. The total potential loss on undrawn lending commitments, standby and commercial letters of credit and securities lending indemnifications is equal to the total notional amount if drawn upon, which does not consider the value of any collateral. Since many of the lending commitments are expected to expire without being drawn upon, the total amount does not necessarily represent future cash requirements. A summary of lending commitment maturities is as follows: $30.3 billion in less than one year, $19.1 billion in one to five years and $471 million over five years. SBLCs principally support obligations of corporate clients and were collateralized with cash and securities of $162 million at March 31, 2024 and $158 million at Dec. 31, 2023. At March 31, 2024, $1.2 billion of the SBLCs will expire within one year, $466 million in one to five years and $8 million over five years. We must recognize, at the inception of an SBLC and foreign and other guarantees, a liability for the fair value of the obligation undertaken in issuing the guarantee. The fair value of the liability, which was recorded with a corresponding asset in other assets, was estimated as the present value of contractual customer fees. The estimated liability for losses related to SBLCs and foreign and other guarantees, if any, is included in the allowance for lending-related commitments. Payment/performance risk of SBLCs is monitored using both historical performance and internal ratings criteria. BNY Mellon’s historical experience is that SBLCs typically expire without being funded. SBLCs below investment grade are monitored closely for payment/performance risk. The table below shows SBLCs by investment grade: Standby letters of credit March 31, 2024 Dec. 31, 2023 Investment grade 71 % 74 % Non-investment grade 29 % 26 % A commercial letter of credit is normally a short-term instrument used to finance a commercial contract for the shipment of goods from a seller to a buyer. Although the commercial letter of credit is contingent upon the satisfaction of specified conditions, it represents a credit exposure if the buyer defaults on the underlying transaction. As a result, the total contractual amounts do not necessarily represent future cash requirements. Commercial letters of credit totaled $66 million at March 31, 2024 and $41 million at Dec. 31, 2023. We expect many of the lending commitments and letters of credit to expire without the need to advance any cash. The revenue associated with guarantees frequently depends on the credit rating of the obligor and the structure of the transaction, including collateral, if any. The allowance for lending-related commitments was $81 million at March 31, 2024 and $87 million at Dec. 31, 2023. A securities lending transaction is a fully collateralized transaction in which the owner of a security agrees to lend the security (typically through an agent, in our case, The Bank of New York Mellon) to a borrower, usually a broker-dealer or bank, on an open, overnight or term basis, under the terms of a prearranged contract. We typically lend securities with indemnification against borrower default. We generally require the borrower to provide collateral with a minimum value of 102% of the fair value of the securities borrowed, which is monitored on a daily basis, thus reducing credit risk. Market risk can also arise in securities lending transactions. These risks are controlled through policies limiting the level of risk that can be undertaken. Securities lending transactions are generally entered into only with highly rated counterparties. Securities lending indemnifications were secured by collateral of $569 billion at March 31, 2024 and $518 billion at Dec. 31, 2023. CIBC Mellon, a joint venture between BNY Mellon and the Canadian Imperial Bank of Commerce (“CIBC”), engages in securities lending activities. CIBC Mellon, BNY Mellon and CIBC jointly and severally indemnify securities lenders against specific types of borrower default. At March 31, 2024 and Dec. 31, 2023, $59 billion and $59 billion, respectively, of borrowings at CIBC Mellon, for which BNY Mellon acts as agent on behalf of CIBC Mellon clients, were secured by collateral of $63 billion and $62 billion, respectively. If, upon a default, a borrower’s collateral was not sufficient to cover its related obligations, certain losses related to the indemnification could be covered by the indemnitors. Unsettled repurchase and reverse repurchase agreements In the normal course of business, we enter into repurchase agreements and reverse repurchase agreements that settle at a future date. In repurchase agreements, BNY Mellon receives cash from and provides securities as collateral to a counterparty at settlement. In reverse repurchase agreements, BNY Mellon advances cash to and receives securities as collateral from the counterparty at settlement. These transactions are recorded on the consolidated balance sheet on the settlement date. At March 31, 2024, we had no unsettled repurchase agreements and $85.4 billion of unsettled reverse repurchase agreements. At Dec. 31, 2023, we had no unsettled repurchase agreements and $77.9 billion of unsettled reverse repurchase agreements. Industry concentrations We have significant industry concentrations related to credit exposure at March 31, 2024. The tables below present our credit exposure in the financial institutions and commercial portfolios. Financial institutions portfolio exposure (in billions) March 31, 2024 Loans Unfunded Total exposure Securities industry $ 2.6 $ 17.9 $ 20.5 Asset managers 1.4 8.1 9.5 Banks 7.5 1.4 8.9 Insurance 0.1 3.8 3.9 Government — 0.3 0.3 Other 0.5 0.8 1.3 Total $ 12.1 $ 32.3 $ 44.4 Commercial portfolio exposure (in billions) March 31, 2024 Loans Unfunded Total exposure Services and other $ 1.4 $ 3.5 $ 4.9 Manufacturing 0.8 3.7 4.5 Energy and utilities 0.2 4.0 4.2 Media and telecom — 0.7 0.7 Total $ 2.4 $ 11.9 $ 14.3 Major concentrations in securities lending are primarily to broker-dealers and are generally collateralized with cash and/or securities. Sponsored member repo program BNY Mellon is a sponsoring member in the FICC sponsored member program, where we submit eligible repurchase and reverse repurchase transactions in U.S. Treasury and agency securities (“Sponsored Member Transactions”) between BNY Mellon and our sponsored member clients for novation and clearing through FICC pursuant to the FICC Government Securities Division rulebook (the “FICC Rules”). We also guarantee to FICC the prompt and full payment and performance of our sponsored member clients’ respective obligations under the FICC Rules in connection with such clients’ Sponsored Member Transactions. We minimize our credit exposure under this guaranty by obtaining a security interest in our sponsored member clients’ collateral and rights under Sponsored Member Transactions. See “Offsetting assets and liabilities” in Note 17 for additional information on our repurchase and reverse repurchase agreements. Indemnification arrangements We have provided standard representations for underwriting agreements, acquisition and divestiture agreements, sales of loans and commitments, and other similar types of arrangements and customary indemnification for claims and legal proceedings related to providing financial services that are not otherwise included above. Insurance has been purchased to mitigate certain of these risks. Generally, there are no stated or notional amounts included in these indemnifications, and the contingencies triggering the obligation for indemnification are not expected to occur. Furthermore, often counterparties to these transactions provide us with comparable indemnifications. We are unable to develop an estimate of the maximum payout under these indemnifications for several reasons. In addition to the lack of a stated or notional amount in a majority of such indemnifications, we are unable to predict the nature of events that would trigger indemnification or the level of indemnification for a certain event. We believe, however, that the possibility that we will have to make any material payments for these indemnifications is remote. At March 31, 2024 and Dec. 31, 2023, we have not recorded any material liabilities under these arrangements. Clearing and settlement exchanges We are a noncontrolling equity investor in, and/or member of, several industry clearing or settlement exchanges through which foreign exchange, securities, derivatives or other transactions settle. Certain of these industry clearing and settlement exchanges require their members to guarantee their obligations and liabilities and/or to provide liquidity support in the event other members do not honor their obligations. We believe the likelihood that a clearing or settlement exchange (of which we are a member) would become insolvent is remote. Additionally, certain settlement exchanges have implemented loss allocation policies that enable the exchange to allocate settlement losses to the members of the exchange. It is not possible to quantify such mark-to- market loss until the loss occurs. Any ancillary costs that occur as a result of any mark-to-market loss cannot be quantified. In addition, we also sponsor clients as members on clearing and settlement exchanges and guarantee their obligations. At March 31, 2024 and Dec. 31, 2023, we did not record any material liabilities under these arrangements. Legal proceedings In the ordinary course of business, The Bank of New York Mellon Corporation and its subsidiaries are routinely named as defendants in or made parties to pending and potential legal actions. We also are subject to governmental and regulatory examinations, information-gathering requests, investigations and proceedings (both formal and informal). Claims for significant monetary damages are often asserted in many of these legal actions, while claims for disgorgement, restitution, penalties and/or other remedial actions or sanctions may be sought in governmental and regulatory matters. It is inherently difficult to predict the eventual outcomes of such matters given their complexity and the particular facts and circumstances at issue in each of these matters. However, on the basis of our current knowledge and understanding, we do not believe that judgments, settlements or orders, if any, arising from these matters (either individually or in the aggregate, after giving effect to applicable reserves and insurance coverage) will have a material adverse effect on the consolidated financial position or liquidity of BNY Mellon, although they could have a material effect on our results of operations in a given period. In view of the inherent unpredictability of outcomes in litigation and regulatory matters, particularly where (i) the damages sought are substantial or indeterminate, (ii) the proceedings are in the early stages, or (iii) the matters involve novel legal theories or a large number of parties, as a matter of course there is considerable uncertainty surrounding the timing or ultimate resolution of litigation and regulatory matters, including a possible eventual loss, fine, penalty or business impact, if any, associated with each such matter. In accordance with applicable accounting guidance, we establish accruals for litigation and regulatory matters when those matters proceed to a stage where they present loss contingencies that are both probable and reasonably estimable. In such cases, there may be a possible exposure to loss in excess of any amounts accrued. We regularly monitor such matters for developments that could affect the amount of the accrual, and will adjust the accrual amount as appropriate. If the loss contingency in question is not both probable and reasonably estimable, we do not establish an accrual and the matter continues to be monitored for any developments that would make the loss contingency both probable and reasonably estimable. We believe that our accruals for legal proceedings are appropriate and, in the aggregate, are not material to the consolidated financial position of BNY Mellon, although future accruals could have a material effect on the results of operations in a given period. In addition, if we have the potential to recover a portion of an estimated loss from a third party, we record a receivable up to the amount of the accrual that is probable of recovery. For certain of those matters described here for which a loss contingency may, in the future, be reasonably possible (whether in excess of a related accrued liability or where there is no accrued liability), BNY Mellon is currently unable to estimate a range of reasonably possible loss. For those matters described here where BNY Mellon is able to estimate a reasonably possible loss, the aggregate range of such reasonably possible loss is up to $660 million in excess of the accrued liability (if any) related to those matters. For matters where a reasonably possible loss is denominated in a foreign currency, our estimate is adjusted quarterly based on prevailing exchange rates. We do not consider potential recoveries when estimating reasonably possible losses. The following describes certain judicial, regulatory and arbitration proceedings involving BNY Mellon: Mortgage-Securitization Trusts Proceedings BNY Mellon has been named as a defendant in a number of legal actions brought by MBS investors alleging that the trustee has expansive duties under the governing agreements, including the duty to investigate and pursue breach of representation and warranty claims against other parties to the MBS transactions. Two actions commenced in December 2015 and February 2017 are pending in New York federal court. In New York state court, six actions are pending: one case commenced in May 2016; two related cases commenced in September 2021 and October 2022; and three related cases commenced in October 2021, December 2021 and February 2022. Matters Related to R. Allen Stanford In late December 2005, Pershing LLC (“Pershing”) became a clearing firm for Stanford Group Co. (“SGC”), a registered broker-dealer that was part of a group of entities ultimately controlled by R. Allen Stanford (“Stanford”). Stanford International Bank, also controlled by Stanford, issued certificates of deposit (“CDs”). Some investors allegedly wired funds from their SGC accounts to purchase CDs. In 2009, the Securities and Exchange Commission charged Stanford with operating a Ponzi scheme in connection with the sale of CDs, and SGC was placed into receivership. Alleged purchasers of CDs have filed two putative class action proceedings against Pershing: one in November 2009 in Texas federal court, and one in May 2016 in New Jersey federal court. On Nov. 5, 2021, the court dismissed the class action filed in New Jersey and that matter has concluded. Three lawsuits remain against Pershing in Louisiana and New Jersey federal courts, which were filed in January 2010, October 2015 and May 2016. The purchasers allege that Pershing, as SGC’s clearing firm, assisted Stanford in a fraudulent scheme and assert contractual, statutory and common law claims. In March 2019, a group of investors filed a putative class action against The Bank of New York Mellon in New Jersey federal court, making the same allegations as in the prior actions brought against Pershing. On Nov. 12, 2021, the court dismissed the class action against The Bank of New York Mellon; on Dec. 15, 2022, an appeals court reversed the dismissal and returned the case to the trial court for further proceedings. All the cases that have been brought in federal court have been consolidated in Texas federal court for discovery purposes. Various alleged Stanford CD purchasers asserted similar claims in Financial Industry Regulatory Authority, Inc. (“FINRA”) arbitration proceedings. Brazilian Postalis Litigation BNY Mellon Servicos Financeiros DTVM S.A. (“DTVM”), a subsidiary that provides asset services in Brazil, acts as administrator for certain investment funds in which a public pension fund for postal workers called Postalis-Instituto de Seguridade Social dos Correios e Telégrafos (“Postalis”) invested. On Aug. 22, 2014, Postalis sued DTVM in Rio de Janeiro, Brazil for losses related to a Postalis fund for which DTVM is administrator. Postalis alleges that DTVM failed to properly perform duties, including to conduct due diligence of and exert control over the manager. On March 12, 2015, Postalis filed a lawsuit in Rio de Janeiro against DTVM and BNY Mellon Administração de Ativos Ltda. (“Ativos”) alleging failure to properly perform duties relating to another fund of which DTVM is administrator and Ativos is manager. On Dec. 14, 2015, Associacão dos Profissionais dos Correios (“ADCAP”), a Brazilian postal workers association, filed a lawsuit in São Paulo against DTVM and other defendants alleging that DTVM improperly contributed to Postalis investment losses. On March 20, 2017, the lawsuit was dismissed without prejudice, and ADCAP appealed. On Aug. 4, 2021, the appellate court overturned the dismissal and sent the lawsuit to a state lower court. On March 2, 2023, DTVM appealed the August 4 decision to Brazil’s Superior Court of Justice. On Dec. 17, 2015, Postalis filed three lawsuits in Rio de Janeiro against DTVM and Ativos alleging failure to properly perform duties with respect to investments in several other funds. On May 20, 2021, the court in one of those lawsuits entered a judgment of approximately $3 million against DTVM and Ativos. On Aug. 23, 2021, DTVM and Ativos filed an appeal of the May 20 decision. On June 7, 2022, the appellate court partially granted and partially denied the appeal, reducing the judgment to approximately $2 million. On July 13, 2023, DTVM and Ativos filed a further appeal to Brazil’s Superior Court of Justice. On Aug. 24, 2022, the court dismissed one of the other lawsuits. On Nov. 24, 2022, Postalis appealed that decision. On Oct. 24, 2023, Postalis’s appeal was denied. On Feb. 4, 2016, Postalis filed a lawsuit in Brasilia against DTVM, Ativos and BNY Mellon Alocação de Patrimônio Ltda. (“Alocação de Patrimônio”), an investment management subsidiary, alleging failure to properly perform duties and liability for losses with respect to investments in various funds of which the defendants were administrator and/or manager. On Jan. 16, 2018, the Brazilian Federal Prosecution Service filed a civil lawsuit in São Paulo against DTVM alleging liability for Postalis losses based on alleged failures to properly perform certain duties as administrator to certain funds in which Postalis invested or as controller of Postalis’s own investment portfolio. On April 18, 2018, the court dismissed the lawsuit without prejudice. On Aug. 4, 2021, the appellate court overturned the dismissal and returned the lawsuit to the lower court. On April 11, 2022, DTVM appealed the Aug. 4 decision to Brazil’s Superior Court of Justice. On Aug. 21, 2023, DTVM’s appeal was denied. In addition, the Tribunal de Contas da União (“TCU”), an administrative tribunal, has initiated proceedings with the purpose of determining liability for losses to three investment funds administered by DTVM in which Postalis was an investor. On Sept. 9, 2020, TCU rendered a decision in one of the proceedings, finding DTVM and two former Postalis directors jointly and severally liable for approximately $50 million. TCU also imposed on DTVM a fine of approximately $2 million. DTVM’s administrative appeal of the decision was denied. On Feb. 25, 2022, DTVM filed a lawsuit in Brazil federal court in Brasilia seeking annulment of TCU’s decision and an injunction preventing TCU from enforcing the judgment. On Aug. 24, 2022, the Brazilian Federal Attorneys filed an action in Rio de Janeiro court seeking to enforce the fine portion of the judgment. On Nov. 8, 2022, the Brasilia federal court in the annulment action granted DTVM’s request for an injunction, suspending the Sept. 9, 2020 TCU decision until the annulment action is decided. On Oct. 4, 2019, Postalis and another pension fund filed a request for arbitration in São Paulo against DTVM and Ativos alleging liability for losses to an investment fund for which DTVM was administrator and Ativos was manager. On March 26, 2021, DTVM and Ativos filed a lawsuit in São Paulo challenging the decision rendered by the Arbitration Court with respect to its jurisdiction over the case. On Feb. 24, 2023, the São Paulo court annulled the Arbitration Court’s decision that it had jurisdiction, and Postalis and the other pension fund have appealed. On Sept. 21, 2023, the São Paulo court issued an order suspending the arbitration; the Arbitration Court implemented the suspension on Oct. 6, 2023. On April 8, 2024, the appellate court reversed the São Paulo court’s decision and found that the Arbitration Court did have jurisdiction. DTVM plans to further appeal. On Oct. 25, 2019, Postalis filed a lawsuit in Rio de Janeiro against DTVM and Alocação de Patrimônio, alleging liability for losses in another fund for which DTVM was administrator and Alocação de Patrimônio and Ativos were managers. On May 9, 2022, the court found DTVM and Alocação de Patrimônio jointly and severally liable for approximately $20 million. On Aug. 12, 2022, DTVM and Alocação de Patrimônio appealed the decision. On June 19, 2020, a lawsuit was filed in federal court in Rio de Janeiro against DTVM, Postalis, and various other defendants alleging liability against DTVM for certain Postalis losses in an investment fund of which DTVM was administrator. On Feb. 10, 2021, Postalis and another pension fund served DTVM in a lawsuit filed in Rio de Janeiro, alleging liability for losses in another investment fund for which DTVM was administrator and the other defendant was manager. Brazilian Silverado Litigation DTVM acts as administrator for the Fundo de Investimento em Direitos Creditórios Multisetorial Silverado Maximum (“Silverado Maximum Fund”), which invests in commercial credit receivables. On June 2, 2016, the Silverado Maximum Fund sued DTVM in its capacity as administrator, along with Deutsche Bank S.A. - Banco Alemão in its capacity as custodian and Silverado Gestão e Investimentos Ltda. in its capacity as investment manager. The Fund alleges that each of the defendants failed to fulfill its respective duty, and caused losses to the Fund for which the defendants are jointly and severally liable. On March 21, 2024, the São Paulo court issued a decision finding DTVM, Deutsche Bank and Silverado Gestão e Investimentos jointly liable for losses to the Fund in an amount to be determined during a later calculation phase. DTVM plans to appeal. German Tax Matters German authorities are investigating past “cum/ex” trading, which involved the purchase of equity securities on or shortly before the dividend date, but settled after that date, potentially resulting in an unwarranted refund of withholding tax. German authorities have taken the view that past cum/ex trading may have resulted in tax avoidance or evasion. European subsidiaries of BNY Mellon have been informed by German authorities about investigations into potential cum/ex trading by certain third-party investment funds, where one of the subsidiaries had acquired entities that served as depositary and/or fund manager for those third-party investment funds. We have received information requests from the authorities relating to pre-acquisition activity and are cooperating fully with those requests. In August 2019, the District Court of Bonn ordered that one of these subsidiaries be joined as a secondary party in connection with the prosecution of unrelated individual defendants. Trial commenced in September 2019. In March 2020, the court stated that it would refrain from taking action against the subsidiary in order to expedite the conclusion of the trial. The court convicted the unrelated individual defendants, and determined that the cum/ex trading activities of the relevant third-party investment funds were unlawful. In November and December 2020 and February 2023, we received secondary liability notices from the German tax authorities totaling approximately $150 million (at then-prevailing exchange rates) related to pre-acquisition activity in various funds for which the entities we acquired were depositary and/or fund manager. We have appealed the notices. In connection with the acquisition of the subject entities, we obtained an indemnity for liabilities from the sellers that we intend to pursue as necessary. Off-Channel Business-Related Communications The Company has been responding to a request for information from the SEC concerning compliance with recordkeeping obligations relating to business communications transmitted on unapproved electronic communication platforms. SEC Staff has stated that it is conducting similar inquiries into recordkeeping practices at other financial institutions. The Company is cooperating with the inquiry. In April 2023, the Company received a similar request from the Commodity Futures Trading Commission and is cooperating with that inquiry as well. Pershing Rule 15c3-3 Matter The Company has been responding to investigative requests for information and records from the SEC concerning Pershing LLC’s compliance with its obligations under SEC Rule 15c3-3, among other regulatory rules and statutes. The Company continues to cooperate with the inquiry.

Business segments

Business segments	3 Months Ended
	Mar. 31, 2024
Segment Reporting [Abstract]
Business segments	Business segments We have an internal information system that produces performance data along product and service lines for our three principal business segments and the Other segment. The primary products and services and types of revenue for our principal businesses and a description of the Other segment are presented in Note 24 of the Notes to Consolidated Financial Statements in our 2023 Annual Report. Business accounting principles Our business data has been determined on an internal management basis of accounting, rather than GAAP, which is used for consolidated financial reporting. These measurement principles are designed so that reported results of the businesses will track their economic performance. Business segment results are subject to reclassification when organizational changes are made, or for refinements in revenue and expense allocation methodologies. Refinements are typically reflected on a prospective basis. In the first quarter of 2024, we made certain realignments of similar products and services within our lines of business. The largest change was the movement of Institutional Solutions from Pershing to Clearance and Collateral Management, both in the Market and Wealth Services business segment. We made other smaller changes that moved activity from Asset Servicing in the Securities Services business segment to Treasury Services in the Market and Wealth Services business segment, and from Wealth Management in the Investment and Wealth Management business segment and Pershing in the Market and Wealth Services business segment to Investment Management in the Investment and Wealth Management business segment. The Other segment was not impacted by the changes. Prior period business segment results have been revised to reflect these changes. The accounting policies of the businesses are the same as those described in Note 1 of the Notes to Consolidated Financial Statements in our 2023 Annual Report. The results of our business segments are presented and analyzed on an internal management reporting basis. • Revenue amounts reflect fee and other revenue generated by each business and include revenue for services provided between the segments that are also provided to third parties. Fee and other revenue transferred between businesses under revenue transfer agreements is included within other fees in each segment. • Revenues and expenses associated with specific client bases are included in those businesses. For example, foreign exchange activity associated with clients using custody products is included in the Securities Services segment. • Net interest income is allocated to businesses based on the yields on the assets and liabilities generated by each business. We employ a funds transfer pricing system that matches funds with the specific assets and liabilities of each business based on their interest sensitivity and maturity characteristics. • The provision for credit losses associated with the respective credit portfolios is reflected in each segment. • Incentives expense related to restricted stock and RSUs is allocated to the segments. • Support and other indirect expenses, including services provided between segments that are not provided to third parties or not subject to a revenue transfer agreement, are allocated to the businesses based on internally developed methodologies and reflected in noninterest expense. • Recurring FDIC expense is allocated to the businesses based on average deposits generated within each business. • Severance expense is recorded in the segments based on the business or function the impacted employees reside, with severance related to corporate staff, technology and operations reflected in the Other segment. • Litigation expense is generally recorded in the business in which the charge occurs. • Management of the securities portfolio is a shared service contained in the Other segment. As a result, gains and losses associated with the valuation of the securities portfolio are generally included in the Other segment. • Client deposits serve as the primary funding source for our securities portfolio. We typically allocate all interest income to the businesses generating the deposits. • Balance sheet assets and liabilities and their related income or expense are specifically assigned to each business. Segments with a net liability position have been allocated assets. • Goodwill and intangible assets are reflected within individual businesses. The following consolidating schedules present the contribution of our segments to our overall profitability. For the quarter ended March 31, 2024 Securities Market and Wealth Services Investment Other Consolidated (dollars in millions) Total fee and other revenue $ 1,556 $ 1,094 $ 805 (a) $ 30 $ 3,485 (a) Net interest income (expense) 583 423 41 (7) 1,040 Total revenue 2,139 1,517 846 (a) 23 4,525 (a) Provision for credit losses 11 5 (1) 12 27 Noninterest expense 1,537 834 740 65 3,176 Income (loss) before income taxes $ 591 $ 678 $ 107 (a) $ (54) $ 1,322 (a) Pre-tax operating margin (b) 28 % 45 % 13 % N/M 29 % Average assets $ 191,544 $ 123,552 $ 26,272 $ 62,617 $ 403,985 (a) Total fee and other revenue, total revenue and income before income taxes are net of income attributable to noncontrolling interests related to consolidated investment management funds of $2 million. (b) Income before income taxes divided by total revenue. N/M – Not meaningful. For the quarter ended Dec. 31, 2023 Securities Market and Wealth Services Investment Other (a) Consolidated (a) (dollars in millions) Total fee and other revenue $ 1,544 $ 1,060 $ 634 (b) $ 21 $ 3,259 (b) Net interest income (expense) 635 436 45 (15) 1,101 Total revenue 2,179 1,496 679 (b) 6 4,360 (b) Provision for credit losses 64 28 (2) (6) 84 Noninterest expense 1,653 837 685 820 3,995 Income (loss) before income taxes $ 462 $ 631 $ (4) (b) $ (808) $ 281 (b) Pre-tax operating margin (c) 21 % 42 % (1) % N/M 6 % Average assets $ 200,040 $ 132,357 $ 26,341 $ 42,867 $ 401,605 (a) The prior period was restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 for additional information. (b) Total fee and other revenue, total revenue and income before income taxes are net of (loss) attributable to noncontrolling interests related to consolidated investment management funds of $(2) million. (c) Income before income taxes divided by total revenue. N/M – Not meaningful. For the quarter ended March 31, 2023 Securities Market and Wealth Services Investment Other (a) Consolidated (a) (dollars in millions) Total fee and other revenue $ 1,443 $ 1,018 $ 785 (b) $ 41 $ 3,287 (b) Net interest income (expense) 666 453 45 (36) 1,128 Total revenue 2,109 1,471 830 (b) 5 4,415 (b) Provision for credit losses — — — 27 27 Noninterest expense 1,540 782 737 41 3,100 Income (loss) before income taxes $ 569 $ 689 $ 93 (b) $ (63) $ 1,288 (b) Pre-tax operating margin (c) 27 % 47 % 11 % N/M 29 % Average assets $ 196,560 $ 132,005 $ 28,370 $ 50,343 $ 407,278 (a) The prior period was restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 for additional information. (b) Total fee and other revenue, total revenue and income before income taxes are net of income (loss) attributable to noncontrolling interests related to consolidated investment management funds of $— million. (c) Income before income taxes divided by total revenue. N/M – Not meaningful.

Supplemental information to the

Supplemental information to the Consolidated Statement of Cash Flows	3 Months Ended
	Mar. 31, 2024
Supplemental Cash Flow Information [Abstract]
Supplemental information to the Consolidated Statement of Cash Flows	Supplemental information to the Consolidated Statement of Cash Flows Non-cash investing and financing transactions that, appropriately, are not reflected in the consolidated statement of cash flows are listed below. Non-cash investing and financing transactions Three months ended March 31, (in millions) 2024 2023 Change in assets of consolidated investment management funds $ 42 $ 227 Change in liabilities of consolidated investment management funds 4 — Change in nonredeemable noncontrolling interests of consolidated investment management funds 61 65 Securities purchased not settled 1,010 240 Securities sold not settled (6) (162) Premises and equipment/operating lease obligations 45 98 Excise tax on share repurchases 6 10

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024		Dec. 31, 2023	Mar. 31, 2023
Pay vs Performance Disclosure
Net income applicable to shareholders of The Bank of New York Mellon Corporation	$ 1,025	[1]	$ 208	$ 982	[1]
[1]Prior period was restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Mar. 31, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Basis of presentation (Policies

Basis of presentation (Policies)	3 Months Ended
	Mar. 31, 2024
Accounting Policies [Abstract]
Basis of presentation	Basis of presentation The accounting and financial reporting policies of BNY Mellon, a global financial services company, conform to U.S. generally accepted accounting principles (“GAAP”) and prevailing industry practices. For information on our significant accounting and reporting policies, see Note 1 of the Notes to Consolidated Financial Statements in our Annual Report on Form 10-K for the year ended Dec. 31, 2023 (the “2023 Annual Report”).
Reclassifications	On Jan. 1, 2024, we adopted Accounting Standards Update (“ASU”) 2023-02, Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method on a retrospective basis for our investments in renewable energy projects that have met the eligibility criteria, and restated prior period financial statements. See Note 2 for additional information.
Use of estimates	Use of estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates based upon assumptions about future economic and market conditions which affect reported amounts and related disclosures in our
New accounting guidance	The following accounting guidance was adopted on Jan. 1, 2024. ASU 2023-02, Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method 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 permits reporting entities to elect to account for their tax equity investments, regardless of the tax credit program from which the income tax credits are received, using the proportional amortization method if certain conditions are met. Under the proportional amortization method, an entity amortizes the initial cost of the investment in proportion to the income tax credits and other income tax benefits received, and recognizes the net amortization and income tax credits and other income tax benefits in the income statement as a component of the provision for income taxes. We adopted this guidance on Jan.1, 2024. The impact of adopting this new guidance for our renewable energy investments that met the eligibility criteria was an increase in investment and other revenue and an increase in the provision for income taxes on the consolidated income statement. Renewable energy investments are recorded in other assets on the balance sheet. In the first quarter of 2024, we restated the prior period financial statements to reflect the impact of the retrospective application of the new accounting guidance. The required disclosures are included in Note 7.
Fair value measurement	Fair value measurement Fair value is defined as the price that would be received to sell an asset, or paid to transfer a liability, in an orderly transaction between market participants at the measurement date. A three-level hierarchy for fair value measurements is utilized based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. BNY Mellon’s own creditworthiness is considered when valuing liabilities. See Note 20 of the Notes to Consolidated Financial Statements in our 2023 Annual Report for

New accounting guidance (Tables

New accounting guidance (Tables)	3 Months Ended
	Mar. 31, 2024
Accounting Policies [Abstract]
Accounting Standards Update and Change in Accounting Principle	The table below presents the impact of the new accounting guidance on our previously reported income statement amounts. Consolidated Income Statement Previously reported Adjustment Restated (in millions) 4Q23 1Q23 4Q23 1Q23 4Q23 1Q23 Investment and other revenue $ (4) $ 79 $ 47 $ 52 $ 43 $ 131 Total fee and other revenue 3,210 3,235 47 52 3,257 3,287 Total revenue 4,311 4,363 47 52 4,358 4,415 Income before income taxes 232 1,236 47 52 279 1,288 Provision for income taxes 29 260 44 46 73 306 Net income 203 976 3 6 206 982 Net income applicable to shareholders of The Bank of New York Mellon Corporation 205 976 3 6 208 982 Net income applicable to common shareholders of The Bank of New York Mellon Corporation 159 905 3 6 162 911 The table below presents the impact of the new accounting guidance on our previously reported earnings per share applicable to common shareholders. Earnings per share applicable to common shareholders of The Bank of New York Mellon Corporation Previously reported Restated (in dollars) 4Q23 1Q23 4Q23 1Q23 Basic $ 0.21 $ 1.13 $ 0.21 $ 1.13 Diluted 0.21 1.12 0.21 1.13 The table below presents the impact of the new accounting guidance on our previously reported balance sheet amounts. Consolidated Balance Sheet Dec. 31, 2023 (in millions) Previously reported Adjustment Restated Other assets $ 25,985 $ (76) $ 25,909 Total assets 409,953 (76) 409,877 Accrued taxes and other expenses 5,567 (156) 5,411 Other liabilities 8,844 184 9,028 Total liabilities 368,944 28 368,972 Retained earnings 39,653 (104) 39,549 Total The Bank of New York Mellon Corporation shareholders’ equity 40,874 (104) 40,770 Total permanent equity 40,924 (104) 40,820 Total liabilities, temporary equity and permanent equity 409,953 (76) 409,877

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 2024
Securities [Abstract]
Amortized Cost and Fair Values of Securities	The following tables present the amortized cost, the gross unrealized gains and losses and the fair value of securities at March 31, 2024 and Dec. 31, 2023. Securities at March 31, 2024 Gross Fair Amortized cost (in millions) Gains Losses Available-for-sale: Non-U.S. government (a) $ 24,988 $ 40 $ 711 $ 24,317 U.S. Treasury 21,960 52 1,824 20,188 Agency residential mortgage-backed securities (“RMBS”) 17,000 109 492 16,617 Agency commercial mortgage-backed securities (“MBS”) 8,083 63 562 7,584 Foreign covered bonds 7,420 17 176 7,261 Collateralized loan obligations (“CLOs”) 6,255 11 1 6,265 Non-agency commercial MBS 3,219 2 287 2,934 U.S. government agencies 2,887 37 188 2,736 Non-agency RMBS 1,852 30 179 1,703 Other asset-backed securities (“ABS”) 976 — 77 899 Other debt securities 1 — — 1 Total securities available-for-sale (b)(c) $ 94,641 $ 361 $ 4,497 $ 90,505 Held-to-maturity: Agency RMBS $ 28,805 $ 2 $ 3,791 $ 25,016 U.S. Treasury 8,763 — 617 8,146 U.S. government agencies 4,144 — 414 3,730 Agency commercial MBS 3,581 — 304 3,277 Non-U.S. government (a) 2,093 — 66 2,027 CLOs 983 — — 983 Non-agency RMBS 24 1 1 24 Other debt securities 11 — 1 10 Total securities held-to-maturity $ 48,404 $ 3 $ 5,194 $ 43,213 Total securities $ 143,045 $ 364 $ 9,691 $ 133,718 (a) Includes supranational securities. (b) The amortized cost of available-for-sale is net of the allowance for credit losses of $1 million. The allowance for credit loss relates to non-agency RMBS. (c) Includes gross unrealized gains of $230 million and gross unrealized losses of $138 million recorded in accumulated other comprehensive income related to securities that were transferred from available-for-sale to held-to-maturity. The unrealized gains primarily relate to agency RMBS, agency commercial MBS and U.S. Treasury securities. The unrealized losses primarily relate to agency RMBS and U.S. Treasury securities. The unrealized gains and losses will be amortized into net interest income over the contractual lives of the securities. Securities at Dec. 31, 2023 Gross Amortized cost Fair (in millions) Gains Losses Available-for-sale: Non-U.S. government (a) $ 18,998 $ 68 $ 684 $ 18,382 U.S. Treasury 18,193 63 1,652 16,604 Agency RMBS 13,457 119 465 13,111 Agency commercial MBS 8,191 69 531 7,729 Foreign covered bonds 6,489 25 180 6,334 CLOs 6,142 5 10 6,137 Non-agency commercial MBS 3,245 1 311 2,935 U.S. government agencies 3,053 42 194 2,901 Non-agency RMBS 1,883 32 175 1,740 Other ABS 1,026 1 84 943 Other debt securities 1 — — 1 Total securities available-for-sale (b)(c) $ 80,678 $ 425 $ 4,286 $ 76,817 Held-to-maturity: Agency RMBS $ 29,740 $ 1 $ 3,493 $ 26,248 U.S. Treasury 9,123 — 612 8,511 U.S. government agencies 4,146 — 401 3,745 Agency commercial MBS 3,411 1 296 3,116 Non-U.S. government (a) 2,137 3 67 2,073 CLOs 983 — 1 982 Non-agency RMBS 26 1 1 26 Other debt securities 12 — 2 10 Total securities held-to-maturity $ 49,578 $ 6 $ 4,873 $ 44,711 Total securities $ 130,256 $ 431 $ 9,159 $ 121,528 (a) Includes supranational securities. (b) The amortized cost of available-for-sale securities is net of the allowance for credit losses of less than $1 million. The allowance for credit loss primarily relates to non-agency RMBS. (c) Includes gross unrealized gains of $250 million and gross unrealized losses of $146 million recorded in accumulated other comprehensive income related to securities that were transferred from available-for-sale to held-to-maturity. The unrealized gains primarily relate to agency RMBS, agency commercial MBS, and U.S. Treasury securities. The unrealized losses primarily relate to agency RMBS and U.S. Treasury securities. The unrealized gains and losses will be amortized into net interest income over the contractual lives of the securities.
Schedule of Realized Gains, Losses, and Impairments	The following table presents the realized gains and losses, on a gross basis. Net securities gains (losses) (in millions) 1Q24 4Q23 1Q23 Realized gross gains $ 4 $ 1 $ 14 Realized gross losses (5) (49) (15) Total net securities (losses) $ (1) $ (48) $ (1)
Pre-Tax Securities Gains (Losses) by Type	The following table presents pre-tax net securities gains (losses) by type. Net securities gains (losses) (in millions) 1Q24 4Q23 1Q23 U.S. Treasury $ (1) $ (49) $ (8) Non-agency RMBS — — 2 Other — 1 5 Total net securities (losses) $ (1) $ (48) $ (1)
Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value	The following tables show the aggregate fair value of available-for-sale securities with 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 more without an allowance for credit losses. Available-for-sale securities in an unrealized loss position without an allowance for credit losses at March 31, 2024 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized (in millions) U.S. Treasury $ 4,973 $ 43 $ 15,046 $ 1,781 $ 20,019 $ 1,824 Non-U.S. government (a) 7,130 54 11,188 657 18,318 711 Agency RMBS 6,326 59 6,873 433 13,199 492 Agency commercial MBS 262 6 6,965 556 7,227 562 Foreign covered bonds 1,280 5 3,020 171 4,300 176 Non-agency commercial MBS 58 — 2,604 287 2,662 287 U.S. government agencies 704 10 1,551 178 2,255 188 Non-agency RMBS 89 1 1,196 176 1,285 177 CLOs 912 — 335 1 1,247 1 Other ABS — — 790 77 790 77 Total securities available-for-sale (b) $ 21,734 $ 178 $ 49,568 $ 4,317 $ 71,302 $ 4,495 (a) Includes supranational securities . (b) Includes $138 million of gross unrealized losses for 12 months or more recorded in accumulated other comprehensive income related to securities that were transferred from available-for-sale to held-to-maturity. There were no gross unrealized losses for less than 12 months. The unrealized losses are primarily related to agency RMBS and U.S. Treasury securities and will be amortized into net interest income over the contractual lives of the securities. Available-for-sale securities in an unrealized loss position without an allowance for credit losses at Dec. 31, 2023 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized (in millions) U.S. Treasury $ 694 $ 48 $ 14,862 $ 1,604 $ 15,556 $ 1,652 Non-U.S. government (a) 2,756 24 11,767 660 14,523 684 Agency RMBS 2,753 27 6,793 438 9,546 465 Agency commercial MBS 328 5 7,060 526 7,388 531 CLOs 784 — 3,158 10 3,942 10 Foreign covered bonds 268 1 3,603 179 3,871 180 Non-agency commercial MBS 187 2 2,607 309 2,794 311 U.S. government agencies 573 4 1,779 190 2,352 194 Non-agency RMBS 30 1 1,300 174 1,330 175 Other ABS — — 832 84 832 84 Total securities available-for-sale (b) $ 8,373 $ 112 $ 53,761 $ 4,174 $ 62,134 $ 4,286 (a) Includes supranational securities.
Debt Securities, Held-to-maturity, Credit Quality Indicator	The following tables show the credit quality of the held-to-maturity securities. We have included certain credit ratings information because the information can indicate the degree of credit risk to which we are exposed. Significant changes in ratings classifications could indicate increased credit risk for us and could be accompanied by an increase in the allowance for credit losses and/or a reduction in the fair value of our securities portfolio. Held-to-maturity securities portfolio at March 31, 2024 Ratings (a) Net unrealized gain (loss) BB+ (dollars in millions) Amortized AAA/ A+/ BBB+/ Not Agency RMBS $ 28,805 $ (3,789) 100 % — % — % — % — % U.S. Treasury 8,763 (617) 100 — — — — U.S. government agencies 4,144 (414) 100 — — — — Agency commercial MBS 3,581 (304) 100 — — — — Non-U.S. government (b)(c) 2,093 (66) 100 — — — — CLOs 983 — 100 — — — — Non-agency RMBS 24 — 24 55 2 17 2 Other debt securities 11 (1) — — — — 100 Total held-to-maturity securities $ 48,404 $ (5,191) 100 % — % — % — % — % (a) Represents ratings by Standard & Poor’s (“S&P”) or the equivalent. (b) Includes supranational securities. (c) Primarily consists of exposure to Germany, France, UK and the Netherlands. Held-to-maturity securities portfolio at Dec. 31, 2023 Ratings (a) Net unrealized gain (loss) BB+ (dollars in millions) Amortized AAA/ A+/ BBB+/ Not Agency RMBS $ 29,740 $ (3,492) 100 % — % — % — % — % U.S. Treasury 9,123 (612) 100 — — — — U.S. government agencies 4,146 (401) 100 — — — — Agency commercial MBS 3,411 (295) 100 — — — — Non-U.S. government (b)(c) 2,137 (64) 100 — — — — CLOs 983 (1) 100 — — — — Non-agency RMBS 26 — 25 54 2 17 2 Other debt securities 12 (2) — — — — 100 Total held-to-maturity securities $ 49,578 $ (4,867) 100 % — % — % — % — % (a) Represents ratings by S&P or the equivalent. (b) Includes supranational securities. (c) Primarily consists of exposure to Germany, France, UK and the Netherlands.
Maturity Distribution by Carrying Amount and Yield (on Tax Equivalent Basis) of Investment Securities Portfolio	The following table shows the maturity distribution by carrying amount and yield (on a tax equivalent basis) of our securities portfolio. Maturity distribution and yields on securities at March 31, 2024 Within 1 year 1-5 years 5-10 years After 10 years Total (dollars in millions) Amount Yield (a) Amount Yield (a) Amount Yield (a) Amount Yield (a) Amount Yield (a) Available-for-sale: U.S. Treasury $ 3,061 1.74 % $ 12,520 1.75 % $ 2,650 3.06 % $ 1,957 2.92 % $ 20,188 2.04 % Non-U.S. government (b) 4,826 2.37 16,482 3.00 2,868 2.36 141 3.08 24,317 2.80 Foreign covered bonds 1,279 3.55 5,557 3.39 425 2.20 — — 7,261 3.34 U.S. government agencies 50 1.51 1,692 3.82 886 2.81 108 2.75 2,736 3.38 Other debt securities — — — — — — 1 4.85 1 4.85 Mortgage-backed securities: Agency RMBS 16,617 5.13 Non-agency RMBS 1,703 4.46 Agency commercial MBS 7,584 3.04 Non-agency commercial MBS 2,934 3.47 CLOs 6,265 6.80 Other ABS 899 2.42 Total securities available-for-sale $ 9,216 2.32 % $ 36,251 2.65 % $ 6,829 2.68 % $ 2,207 2.92 % $ 90,505 3.44 % Held-to-maturity: U.S. Treasury $ 2,816 1.55 % $ 5,137 1.21 % $ 810 1.07 % $ — — % $ 8,763 1.30 % U.S. government agencies 555 1.34 2,827 1.46 549 1.69 213 1.99 4,144 1.50 Non-U.S. government (b) 896 0.97 1,121 1.29 76 0.59 — — 2,093 1.13 Other debt securities — — — — 11 4.75 — — 11 4.75 Mortgage-backed securities: Agency RMBS 28,805 2.33 Non-agency RMBS 24 4.42 Agency commercial MBS 3,581 2.57 CLOs 983 6.72 Total securities held-to-maturity $ 4,267 1.40 % $ 9,085 1.30 % $ 1,446 1.31 % $ 213 1.99 % $ 48,404 2.13 % Total securities $ 13,483 2.03 % $ 45,336 2.39 % $ 8,275 2.46 % $ 2,420 2.85 % $ 138,909 3.00 % (a) Yields are based upon the amortized cost of securities and consider the contractual coupon, amortization of premiums and accretion of discounts, excluding the effect of related hedging derivatives. (b) Includes supranational securities.

Loans and asset quality (Tables

Loans and asset quality (Tables)	3 Months Ended
	Mar. 31, 2024
Receivables [Abstract]
Schedule of Loan Portfolio and Industry Concentrations of Credit Risk	The table below provides the details of our loan portfolio. Loans March 31, 2024 Dec. 31, 2023 (in millions) Commercial $ 2,463 $ 2,112 Commercial real estate 6,997 6,760 Financial institutions 12,059 10,521 Lease financings 599 599 Wealth management loans 9,028 9,109 Wealth management mortgages 9,088 9,131 Other residential mortgages 1,147 1,166 Capital call financing 3,987 3,700 Other 2,723 2,717 Overdrafts 7,947 3,053 Margin loans 17,577 18,011 Total loans (a) $ 73,615 $ 66,879 (a) Net of unearned income of $258 million at March 31, 2024 and $268 million at Dec. 31, 2023 primarily related to lease financings.
Summary of Transactions in the Allowance for Credit Losses	Activity in the allowance for credit losses on loans and lending-related commitments is presented below. This does not include activity in the allowance for credit losses related to other financial instruments, including cash and due from banks, interest-bearing deposits with banks, federal funds sold and securities purchased under resale agreements, available-for-sale securities, held-to-maturity securities and accounts receivable. Allowance for credit losses activity for the quarter ended March 31, 2024 Wealth management loans Wealth management mortgages Other Capital call financing (in millions) Commercial Commercial Financial Lease Total Beginning balance $ 27 $ 325 $ 19 $ 1 $ 1 $ 9 $ 4 $ 4 $ 390 Charge-offs — — — — — (1) — — (1) Recoveries — — — — — — — — — Net (charge-offs) — — — — — (1) — — (1) Provision (a) (3) 22 (2) (1) — (1) (1) — 14 Ending balance $ 24 $ 347 $ 17 $ — $ 1 $ 7 $ 3 $ 4 $ 403 Allowance for: Loan losses $ 14 $ 287 $ 8 $ — $ 1 $ 6 $ 3 $ 3 $ 322 Lending-related commitments 10 60 9 — — 1 — 1 81 Individually evaluated for impairment: Loan balance (b) $ — $ 331 $ — $ — $ — $ 16 $ 1 $ — $ 348 Allowance for loan losses — 107 — — — — — — 107 (a) Does not include the provision for credit losses related to other financial instruments of $13 million for the quarter ended March 31, 2024. (b) Includes collateral-dependent loans of $348 million with $303 million of collateral value. Allowance for credit losses activity for the quarter ended Dec. 31, 2023 Wealth management loans Wealth management mortgages Other Capital call financing (in millions) Commercial Commercial Financial Lease Other Total Beginning balance $ 32 $ 222 $ 22 $ 1 $ 1 $ 9 $ 6 $ 3 $ — $ 296 Charge-offs — — — — — — — — — — Recoveries — — — — — — — — 5 5 Net recoveries — — — — — — — — 5 5 Provision (a) (5) 103 (3) — — — (2) 1 (5) 89 Ending balance $ 27 $ 325 $ 19 $ 1 $ 1 $ 9 $ 4 $ 4 $ — $ 390 Allowance for: Loan losses $ 12 $ 266 $ 9 $ 1 $ 1 $ 8 $ 4 $ 2 $ — $ 303 Lending-related commitments 15 59 10 — — 1 — 2 — 87 Individually evaluated for impairment: Loan balance (b) $ — $ 290 $ — $ — $ — $ 12 $ 1 $ — $ — $ 303 Allowance for loan losses — 76 — — — — — — — 76 (a) Does not include the provision for credit losses benefit related to other financial instruments of $5 million for the quarter ended Dec. 31, 2023. (b) Includes collateral-dependent loans of $303 million with $348 million of collateral at fair value. Allowance for credit losses activity for the quarter ended March 31, 2023 Wealth management loans Wealth management mortgages Other Capital call financing Total (in millions) Commercial Commercial Financial Lease Beginning balance $ 18 $ 184 $ 24 $ 1 $ 1 $ 12 $ 8 $ 6 $ 254 Charge-offs — — — — — — — — — Recoveries 1 — — — — — — — 1 Net recoveries 1 — — — — — — — 1 Provision (a) 2 (7) — — — 2 1 — (2) Ending balance $ 21 $ 177 $ 24 $ 1 $ 1 $ 14 $ 9 $ 6 $ 253 Allowance for: Loan losses $ 4 $ 130 $ 8 $ 1 $ 1 $ 13 $ 9 $ 4 $ 170 Lending-related commitments 17 47 16 — — 1 — 2 83 Individually evaluated for impairment: Loan balance (b) $ — $ 54 $ — $ — $ — $ 13 $ 1 $ — $ 68 Allowance for loan losses — — — — — — — — — (a) Does not include the provision for credit losses related to other financial instruments of $29 million for the quarter ended March 31, 2023. (b) Includes collateral-dependent loans of $68 million with $103 million of collateral at fair value.
Distribution of Nonperforming Assets	The table below presents our nonperforming assets. Nonperforming assets March 31, 2024 Dec. 31, 2023 Recorded investment Recorded investment With an Without an allowance With an Without an allowance (in millions) Total Total Nonperforming loans: Commercial real estate $ 230 $ — $ 230 $ 189 $ — $ 189 Other residential mortgages 22 1 23 23 1 24 Wealth management mortgages 7 16 23 7 12 19 Total nonperforming loans 259 17 276 219 13 232 Other assets owned — 2 2 — 5 5 Total nonperforming assets $ 259 $ 19 $ 278 $ 219 $ 18 $ 237
Information about Past Due Loans	The table below presents our past due loans. Past due loans and still accruing interest March 31, 2024 Dec. 31, 2023 Days past due Total Days past due Total (in millions) 30-59 60-89 ≥90 30-59 60-89 ≥90 Financial institutions $ 455 (a) $ — $ — $ 455 $ 339 (b) $ — $ — $ 339 Wealth management loans 50 — — 50 52 — — 52 Wealth management mortgages 48 — — 48 26 3 — 29 Commercial real estate 3 — — 3 9 3 — 12 Other residential mortgages 12 5 — 17 7 1 — 8 Total past due loans $ 568 $ 5 $ — $ 573 $ 433 $ 7 $ — $ 440 (a) Past due financial institution loans have been collected since March 31, 2024. (b) Past due financial institution loans have been collected since Dec. 31, 2023.
Financing Receivable Credit Quality Indicators	The tables below provide information about the credit profile of the loan portfolio by the period of origination. Credit profile of the loan portfolio March 31, 2024 Revolving loans Originated, at amortized cost Amortized cost Converted to term loans – Amortized cost Accrued (in millions) 1Q24 2023 2022 2021 2020 Prior to 2020 Total (a) Commercial: Investment grade $ 16 $ 140 $ 56 $ 64 $ — $ 116 $ 1,980 $ — $ 2,372 Non-investment grade 2 — — 24 — — 65 — 91 Total commercial 18 140 56 88 — 116 2,045 — 2,463 $ 3 Commercial real estate: Investment grade 185 555 739 640 558 1,759 226 22 4,684 Non-investment grade 1 237 846 339 307 493 90 — 2,313 Total commercial real estate 186 792 1,585 979 865 2,252 316 22 6,997 33 Financial institutions: Investment grade 184 424 24 110 72 8 10,142 — 10,964 Non-investment grade 45 20 10 — — — 1,020 — 1,095 Total financial institutions 229 444 34 110 72 8 11,162 — 12,059 124 Wealth management loans: Investment grade 4 30 31 109 26 163 8,487 100 8,950 Non-investment grade — — — — — — 78 — 78 Total wealth management loans 4 30 31 109 26 163 8,565 100 9,028 59 Wealth management mortgages (b) 107 841 1,658 1,901 855 3,705 21 — 9,088 24 Lease financings — — — 12 38 549 — — 599 — Other residential mortgages — 179 555 199 5 209 — — 1,147 4 Capital call financing — 10 — — — — 3,977 — 3,987 17 Other loans — — — — — — 2,723 — 2,723 7 Margin loans 7,830 — — — — — 9,747 — 17,577 39 Total loans $ 8,374 $ 2,436 $ 3,919 $ 3,398 $ 1,861 $ 7,002 $ 38,556 $ 122 $ 65,668 $ 310 (a) Excludes overdrafts of $7,947 million. Overdrafts occur on a daily basis primarily in the custody and securities clearance business and are generally repaid within two (b) The gross write-offs related to wealth management mortgage loans were less than $1 million in the first three months of 2024. Credit profile of the loan portfolio Dec. 31, 2023 Revolving loans Originated, at amortized cost Amortized cost Converted to term loans – Amortized cost Accrued (in millions) 2023 2022 2021 2020 2019 Prior to 2019 Total (a) Commercial: Investment grade $ 193 $ 114 $ 70 $ — $ — $ 45 $ 1,483 $ — $ 1,905 Non-investment grade 52 18 — — — — 137 — 207 Total commercial 245 132 70 — — 45 1,620 — 2,112 $ 3 Commercial real estate: Investment grade 1,518 864 585 152 271 875 136 22 4,423 Non-investment grade 1,172 685 154 43 47 152 84 — 2,337 Total commercial real estate 2,690 1,549 739 195 318 1,027 220 22 6,760 30 Financial institutions: Investment grade 616 74 57 — — 10 6,948 — 7,705 Non-investment grade 134 10 — — — — 2,672 — 2,816 Total financial institutions 750 84 57 — — 10 9,620 — 10,521 120 Wealth management loans: Investment grade 39 30 110 26 7 167 8,542 101 9,022 Non-investment grade — 2 — — — — 85 — 87 Total wealth management loans 39 32 110 26 7 167 8,627 101 9,109 57 Wealth management mortgages 850 1,689 1,909 863 736 3,066 18 — 9,131 22 Lease financings 230 — — 40 7 322 — — 599 — Other residential mortgages (b) 184 561 200 5 — 216 — — 1,166 5 Capital call financing 10 — — — — — 3,690 — 3,700 15 Other loans — — — — — — 2,717 — 2,717 7 Margin loans 7,283 — — — — — 10,728 — 18,011 41 Total loans $ 12,281 $ 4,047 $ 3,085 $ 1,129 $ 1,068 $ 4,853 $ 37,240 $ 123 $ 63,826 $ 300 (a) Excludes overdrafts of $3,053 million. Overdrafts occur on a daily basis primarily in the custody and securities clearance business and are generally repaid within two (b) The gross write-offs related to other residential mortgage loans were $3 million in 2023.

Goodwill and intangible assets

Goodwill and intangible assets (Tables)	3 Months Ended
	Mar. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Breakdown of Goodwill by Business	The tables below provide a breakdown of goodwill by business segment. Goodwill by business segment (in millions) Securities Market and Wealth Services Investment Consolidated Balance at Dec. 31, 2023 Goodwill $ 7,004 $ 1,429 $ 8,508 $ 16,941 Accumulated impairment losses — — (680) (680) Net goodwill $ 7,004 $ 1,429 $ 7,828 $ 16,261 Business realignment (a) (51) 48 3 — Foreign currency translation (18) (1) (14) (33) Balance at March 31, 2024 Goodwill $ 6,935 $ 1,476 $ 8,497 $ 16,908 Accumulated impairment losses — — (680) (680) Net goodwill $ 6,935 $ 1,476 $ 7,817 $ 16,228 (a) In the first quarter of 2024, we made certain realignments of similar products and services within our lines of business. See Note 19 for additional information. Goodwill by business segment (in millions) Securities Market and Wealth Services Investment Consolidated Balance at Dec. 31, 2022 Goodwill $ 6,973 $ 1,424 $ 8,433 $ 16,830 Accumulated impairment losses — — (680) (680) Net goodwill $ 6,973 $ 1,424 $ 7,753 $ 16,150 Foreign currency translation 12 2 28 42 Balance at March 31, 2023 Goodwill $ 6,985 $ 1,426 $ 8,461 $ 16,872 Accumulated impairment losses — — (680) (680) Net goodwill $ 6,985 $ 1,426 $ 7,781 $ 16,192
Breakdown of Intangible Assets by Business	The tables below provide a breakdown of intangible assets by business segment. Intangible assets – net carrying amount by business segment (in millions) Securities Market and Wealth Services Investment Other Consolidated Balance at Dec. 31, 2023 $ 164 $ 378 $ 1,463 $ 849 $ 2,854 Amortization (7) (1) (4) — (12) Foreign currency translation (1) — (2) — (3) Balance at March 31, 2024 $ 156 $ 377 $ 1,457 $ 849 $ 2,839 Intangible assets – net carrying amount by business segment (in millions) Securities Market and Wealth Services Investment Other Consolidated Balance at Dec. 31, 2022 $ 193 $ 384 $ 1,475 $ 849 $ 2,901 Amortization (8) (1) (5) — (14) Foreign currency translation — — 3 — 3 Balance at March 31, 2023 $ 185 $ 383 $ 1,473 $ 849 $ 2,890
Breakdown of Intangible Assets by Type	The table below provides a breakdown of intangible assets by type. Intangible assets March 31, 2024 Dec. 31, 2023 (dollars in millions) Gross Accumulated Net Remaining Gross Accumulated Net Subject to amortization: (a) Customer contracts – Securities Services $ 729 $ (573) $ 156 10 years $ 731 $ (567) $ 164 Customer contracts – Market and Wealth Services 280 (274) 6 2 years 280 (273) 7 Customer relationships – Investment and Wealth Management 553 (484) 69 8 years 553 (479) 74 Other 41 (12) 29 13 years 41 (12) 29 Total subject to amortization $ 1,603 $ (1,343) $ 260 9 years $ 1,605 $ (1,331) $ 274 Not subject to amortization: (b) Tradenames $ 1,292 N/A $ 1,292 N/A $ 1,292 N/A $ 1,292 Customer relationships 1,287 N/A 1,287 N/A 1,288 N/A 1,288 Total not subject to amortization $ 2,579 N/A $ 2,579 N/A $ 2,580 N/A $ 2,580 Total intangible assets $ 4,182 $ (1,343) $ 2,839 N/A $ 4,185 $ (1,331) $ 2,854 (a) Excludes fully amortized intangible assets. (b) Intangible assets not subject to amortization have an indefinite life. N/A – Not applicable.
Estimated Annual Amortization Expense	Estimated annual amortization expense for current intangibles for the next five years is as follows: For the year ended Estimated amortization expense (in millions) 2024 $ 49 2025 43 2026 34 2027 28 2028 24

Other assets (Tables)

Other assets (Tables)	3 Months Ended
	Mar. 31, 2024
Other Assets [Abstract]
Summary of Other Assets Presented on the Consolidated Balance Sheet	The following table provides the components of other assets presented on the consolidated balance sheet. Other assets March 31, 2024 Dec. 31, 2023 (in millions) Corporate/bank-owned life insurance $ 5,498 $ 5,480 Accounts receivable (a) 4,347 6,567 Software 2,455 2,430 Fails to deliver 2,281 1,514 Tax credit investments (b) 2,130 2,186 Prepaid pension assets 1,984 1,818 Equity method investments 888 873 Other equity investments (c) 763 741 Prepaid expense 754 737 Assets of consolidated investment management funds 568 526 Federal Reserve Bank stock 482 480 Fair value of hedging derivatives 384 236 Seed capital (d) 207 232 Cash collateral receivable on derivative transactions 187 621 Income taxes receivable 165 270 Other (e) 1,010 1,198 Total other assets $ 24,103 $ 25,909 (a) Includes receivables for securities sold or matured that have not yet settled. (b) Prior period renewable energy investments were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 for additional information. (c) Includes strategic equity, private equity and other investments. (d) Includes investments in BNY Mellon funds that hedge deferred incentive awards. (e) At March 31, 2024 and Dec. 31, 2023, other assets include $7 million and $7 million, respectively, of Federal Home Loan Bank stock, at cost.
Equity Securities without Readily Determinable Fair Value	The following table presents the adjustments on the non-readily marketable equity securities. Adjustments on non-readily marketable equity securities Life-to-date (in millions) 1Q24 4Q23 1Q23 Upward adjustments $ — $ 47 $ — $ 335 Downward adjustments — (1) (18) (53) Net adjustments $ — $ 46 $ (18) $ 282
Summary of Investments Valued Using NAV	The table below presents information on our investments valued using NAV. Investments valued using NAV March 31, 2024 Dec. 31, 2023 (in millions) Fair value Unfunded Fair value Unfunded Seed capital (a)(b) $ 7 $ — $ 3 $ — Private equity investments (c) 152 41 143 42 Other 7 — 7 — Total $ 166 $ 41 $ 153 $ 42 ( a) Seed capital investments at March 31, 2024 are generally redeemable on request. Distributions are received as the underlying investments in the funds, which have redemption notice periods of up to seven days, are liquidated. (b) Includes investments in funds that relate to deferred compensation arrangements with employees. (c) Private equity investments primarily include Volcker Rule-compliant investments in SBICs that invest in various sectors of the economy. Private equity investments do not have redemption rights. Distributions from such investments will be received as the underlying investments in the private equity investments, which have a life of 10 years, are liquidated.

Contract revenue (Tables)

Contract revenue (Tables)	3 Months Ended
	Mar. 31, 2024
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following tables present fee and other revenue related to contracts with customers, disaggregated by type of fee revenue, for each business segment. Business segment data has been determined on an internal management basis of accounting, rather than GAAP, which is used for consolidated financial reporting. Disaggregation of contract revenue by business segment Quarter ended March 31, 2024 March 31, 2023 (a) (in millions) Securities Services Market and Wealth Services Investment and Wealth Management Other Total Securities Services Market and Wealth Services Investment and Wealth Management Other Total Fee and other revenue – contract revenue: Investment services fees $ 1,260 $ 992 $ 26 $ (16) $ 2,262 $ 1,169 $ 932 $ 24 $ (15) $ 2,110 Investment management and performance fees — 2 774 (4) 772 — 2 784 (3) 783 Financing-related fees 15 8 — — 23 13 5 — — 18 Distribution and servicing fees 1 (29) 70 — 42 — (23) 55 1 33 Investment and other revenue 57 60 (90) 1 28 60 50 (80) 1 31 Total fee and other revenue – contract revenue 1,333 1,033 780 (19) 3,127 1,242 966 783 (16) 2,975 Fee and other revenue – not in scope of Accounting Standards Codification (“ASC”) 606 (b)(c)(d) 223 61 25 49 358 201 52 2 57 312 Total fee and other revenue $ 1,556 $ 1,094 $ 805 $ 30 $ 3,485 $ 1,443 $ 1,018 $ 785 $ 41 $ 3,287 (a) Prior period results were revised in the first quarter of 2024 to reflect certain realignments of similar products and services within our lines of business. See Note 19 for additional information. (b) Primarily includes investment services fees, foreign exchange revenue, financing-related fees and investment and other revenue, all of which are accounted for using other accounting guidance. (c) The Investment and Wealth Management business segment is net of income (loss) attributable to noncontrolling interests related to consolidated investment management funds of $2 million in the first quarter of 2024 and $— million in the first quarter of 2023. (d) Prior period amount for the Other segment was restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 for additional information. Disaggregation of contract revenue by business segment Quarter ended Dec. 31, 2023 (a) (in millions) Securities Services Market and Wealth Services Investment and Wealth Management Other Total Fee and other revenue – contract revenue: Investment services fees $ 1,251 $ 970 $ 25 $ (15) $ 2,231 Investment management and performance fees — 2 744 (3) 743 Financing-related fees 7 3 1 (1) 10 Distribution and servicing fees 3 (27) 66 — 42 Investment and other revenue 58 55 (83) — 30 Total fee and other revenue – contract revenue 1,319 1,003 753 (19) 3,056 Fee and other revenue – not in scope of ASC 606 (b)(c)(d) 225 57 (119) 40 203 Total fee and other revenue $ 1,544 $ 1,060 $ 634 $ 21 $ 3,259 (a) Prior period results were revised in the first quarter of 2024 to reflect certain realignments of similar products and services within our lines of business. See Note 19 for additional information. (b) Primarily includes investment services fees, foreign exchange revenue, financing-related fees and investment and other revenue, all of which are accounted for using other accounting guidance. (c) The Investment and Wealth Management business segment is net of (loss) attributable to noncontrolling interests related to consolidated investment management funds of $(2) million in the fourth quarter of 2023. (d) Prior period amount for the Other segment was restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 for additional information.

Net interest income (Tables)

Net interest income (Tables)	3 Months Ended
	Mar. 31, 2024
Interest Revenue (Expense), Net [Abstract]
Components of Net Interest Income	The following table provides the components of net interest income presented on the consolidated income statement. Net interest income Quarter ended (in millions) March 31, 2024 Dec. 31, 2023 March 31, 2023 Interest income Deposits with the Federal Reserve and other central banks $ 1,219 $ 1,294 $ 853 Deposits with banks 121 130 140 Federal funds sold and securities purchased under resale agreements 2,433 2,308 991 Loans 1,061 1,064 866 Securities: Taxable 1,193 1,080 1,022 Exempt from federal income taxes — — — Total securities 1,193 1,080 1,022 Trading securities 69 87 70 Total interest income 6,096 5,963 3,942 Interest expense Deposits 2,187 2,108 1,366 Federal funds purchased and securities sold under repurchase agreements 2,243 2,122 892 Trading liabilities 21 35 30 Other borrowed funds 4 6 3 Customer payables 146 148 128 Long-term debt 455 443 395 Total interest expense 5,056 4,862 2,814 Net interest income 1,040 1,101 1,128 Provision for credit losses 27 84 27 Net interest income after provision for credit losses $ 1,013 $ 1,017 $ 1,101

Employee benefit plans (Tables)

Employee benefit plans (Tables)	3 Months Ended
	Mar. 31, 2024
Retirement Benefits [Abstract]
Schedule of Defined Benefit Plans Disclosures	The components of net periodic benefit (credit) cost are presented below. The service cost component is reflected in staff expense, whereas the remaining components are reflected in other expense. Net periodic benefit (credit) cost Quarter ended March 31, 2024 March 31, 2023 (in millions) Domestic pension benefits Foreign pension benefits Health care benefits Domestic pension benefits Foreign pension benefits Health care benefits Service cost $ — $ 3 $ — $ — $ 3 $ — Interest cost 45 10 1 48 8 1 Expected return on assets (95) (20) (2) (95) (22) (2) Other 6 (1) (2) 2 (3) (3) Net periodic benefit (credit) $ (44) $ (8) $ (3) $ (45) $ (14) $ (4)

Variable interest entities (Tab

Variable interest entities (Tables)	3 Months Ended
	Mar. 31, 2024
Securitizations And Variable Interest Entities Disclosure [Abstract]
Incremental Assets and Liabilities Included in Consolidated Financial Statements	The following table presents the incremental assets and liabilities included on the consolidated balance sheet as of March 31, 2024 and Dec. 31, 2023. The net assets of any consolidated VIE are solely available to settle the liabilities of the VIE and to settle any investors’ ownership liquidation requests, including any seed capital we invested in the VIE. Consolidated investment management funds March 31, 2024 Dec. 31, 2023 (in millions) Trading assets $ 547 $ 510 Other assets 21 16 Total assets (a) $ 568 $ 526 Other liabilities $ 5 $ 1 Total liabilities (b) $ 5 $ 1 Nonredeemable noncontrolling interests (c) $ 111 $ 50 (a) Includes voting model entities (“VMEs”) with assets of $51 million at March 31, 2024 and $91 million at Dec. 31, 2023. (b) Includes VMEs with liabilities of $1 million at March 31, 2024 and $1 million at Dec. 31, 2023. (c) Includes VMEs with nonredeemable noncontrolling interests of $3 million at March 31, 2024 and $12 million at Dec. 31, 2023.
Schedule of Variable Interest Entities	The maximum loss exposure indicated in the following table relates solely to our investments in, and unfunded commitments to, the VIEs. Non-consolidated VIEs March 31, 2024 Dec. 31, 2023 (in millions) (a) Other assets $ 2,212 $ 2,261 Other liabilities 777 780 Maximum loss exposure 2,990 3,041 (a) Prior period balances were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 for additional information.

Preferred stock (Tables)

Preferred stock (Tables)	3 Months Ended
	Mar. 31, 2024
Stockholders' Equity Note [Abstract]
Preferred Stock Summary	The following table summarizes the Parent’s preferred stock issued and outstanding at March 31, 2024 and Dec. 31, 2023. Preferred stock summary (a) Total shares issued and outstanding Carrying value (b) (in millions) March 31, 2024 Dec. 31, 2023 March 31, 2024 Dec. 31, 2023 Per annum dividend rate (c) Series A Greater of (i) SOFR plus 0.565% and (ii) 4.000% 5,001 5,001 $ 500 $ 500 Series F 4.625% to but excluding Sept. 20, 2026, then SOFR plus 3.131% 10,000 10,000 990 990 Series G 4.700% to but excluding Sept. 20, 2025, then a floating rate equal to the five-year treasury rate plus 4.358% 10,000 10,000 990 990 Series H 3.700% to but excluding March 20, 2026, then a floating rate equal to the five-year treasury rate plus 3.352% 5,825 5,825 576 576 Series I 3.750% to but excluding Dec. 20, 2026, then a floating rate equal to the five-year treasury rate plus 2.630% 13,000 13,000 1,287 1,287 Total 43,826 43,826 $ 4,343 $ 4,343 (a) All outstanding preferred stock is noncumulative perpetual preferred stock with a liquidation preference of $100,000 per share. (b) The carrying value of the Series F, Series G, Series H and Series I preferred stock is recorded net of issuance costs. (c) References to SOFR are to a floating rate equal to the three-month CME Term SOFR (plus a spread adjustment of 0.26161% per annum).
Summary of Preferred Dividends Paid	The table below presents the Parent’s preferred dividends. Preferred dividends (dollars in millions, except per share amounts) Depositary shares 1Q24 4Q23 1Q23 Per share Total Per share Total Per share Total Series A 100 (a) $ 1,566.46 $ 8 $ 1,573.41 $ 7 $ 1,327.72 $ 7 Series D 100 N/A N/A 2,052.42 21 (b) — — Series F 100 2,312.50 23 — — 2,312.50 23 Series G 100 2,350.00 24 — — 2,350.00 24 Series H 100 925.00 5 925.00 5 925.00 5 Series I 100 937.50 12 937.50 13 937.50 12 Total $ 72 $ 46 $ 71 (a) Represents Normal Preferred Capital Securities. (b) Includes deferred fees of approximately $10 million related to the redemption of Series D preferred stock. N/A - Not applicable.

Other comprehensive income (l_2

Other comprehensive income (loss) (Tables)	3 Months Ended
	Mar. 31, 2024
Equity [Abstract]
Components of Other Comprehensive Income (Loss)	Components of other comprehensive income (loss) Quarter ended March 31, 2024 Dec. 31, 2023 March 31, 2023 (in millions) Pre-tax Tax After-tax Pre-tax Tax After-tax Pre-tax Tax After-tax Foreign currency translation: Foreign currency translation adjustments arising during the period (a) $ (44) $ (47) $ (91) $ 172 $ 85 $ 257 $ 77 $ 26 $ 103 Total foreign currency translation (44) (47) (91) 172 85 257 77 26 103 Unrealized gain on assets available-for-sale: Unrealized gain arising during period 137 (34) 103 921 (223) 698 419 (102) 317 Reclassification adjustment (b) 1 — 1 48 (11) 37 1 — 1 Net unrealized gain on assets available-for-sale 138 (34) 104 969 (234) 735 420 (102) 318 Defined benefit plans: Net (loss) arising during the period — — — (107) 32 (75) — — — Foreign exchange adjustment — — — (1) — (1) — — — Amortization of prior service credit, net loss and initial obligation included in net periodic benefit cost (b) 3 — 3 (5) 3 (2) (4) 1 (3) Total defined benefit plans 3 — 3 (113) 35 (78) (4) 1 (3) Unrealized gain (loss) on cash flow hedges: Unrealized hedge gain arising during period 4 (1) 3 1 (1) — 4 (1) 3 Reclassification of net (gain) loss to net income: Foreign exchange (“FX”) contracts – staff expense (2) — (2) (1) — (1) 3 (1) 2 FX contracts – investment and other revenue — — — (1) — (1) — — — Total reclassifications to net income (2) — (2) (2) — (2) 3 (1) 2 Net unrealized gain (loss) on cash flow hedges 2 (1) 1 (1) (1) (2) 7 (2) 5 Total other comprehensive income $ 99 $ (82) $ 17 $ 1,027 $ (115) $ 912 $ 500 $ (77) $ 423 (a) Includes the impact of hedges of net investments in foreign subsidiaries. See Note 17 for additional information.

Fair value measurement (Tables)

Fair value measurement (Tables)	3 Months Ended
	Mar. 31, 2024
Fair Value Disclosures [Abstract]
Financial Instruments Carried at Fair Value on Recurring Basis	The following tables present the financial instruments carried at fair value at March 31, 2024 and Dec. 31, 2023, by caption on the consolidated balance sheet and by the three-level valuation hierarchy. We have included credit ratings information in certain of the tables because the information indicates the degree of credit risk to which we are exposed, and significant changes in ratings classifications could result in increased risk for us. Assets and liabilities measured at fair value on a recurring basis at March 31, 2024 Total carrying (dollars in millions) Level 1 Level 2 Level 3 Netting (a) Assets: Available-for-sale securities: Non-U.S. government (b) $ 3,880 $ 20,437 $ — $ — $ 24,317 U.S. Treasury 20,188 — — — 20,188 Agency RMBS — 16,617 — — 16,617 Agency commercial MBS — 7,584 — — 7,584 Foreign covered bonds — 7,261 — — 7,261 CLOs — 6,265 — — 6,265 Non-agency commercial MBS — 2,934 — — 2,934 U.S. government agencies — 2,736 — — 2,736 Non-agency RMBS — 1,703 — — 1,703 Other ABS — 899 — — 899 Other debt securities — 1 — — 1 Total available-for-sale securities 24,068 66,437 — — 90,505 Trading assets: Debt instruments 1,793 1,919 — — 3,712 Equity instruments 5,060 — — — 5,060 Derivative assets not designated as hedging: Interest rate 8 947 — (853) 102 Foreign exchange — 4,668 — (3,464) 1,204 Equity and other contracts — 7 — (7) — Total derivative assets not designated as hedging 8 5,622 — (4,324) 1,306 Total trading assets 6,861 7,541 — (4,324) 10,078 Other assets: Derivative assets designated as hedging: Interest rate — 278 — — 278 Foreign exchange — 106 — — 106 Total derivative assets designated as hedging — 384 — — 384 Other assets (c) 431 456 — — 887 Total other assets 431 840 — — 1,271 Assets measured at NAV (c) 166 Total assets $ 31,360 $ 74,818 $ — $ (4,324) $ 102,020 Percentage of total assets prior to netting 30 % 70 % — % Liabilities: Trading liabilities: Debt instruments $ 1,362 $ 30 $ — $ — $ 1,392 Equity instruments 20 — — — 20 Derivative liabilities not designated as hedging: Interest rate 2 1,306 — (536) 772 Foreign exchange — 4,380 — (3,517) 863 Equity and other contracts 3 98 — (48) 53 Total derivative liabilities not designated as hedging 5 5,784 — (4,101) 1,688 Total trading liabilities 1,387 5,814 — (4,101) 3,100 Other liabilities: Derivative liabilities designated as hedging: Foreign exchange — 48 — — 48 Total derivative liabilities designated as hedging — 48 — — 48 Other liabilities — 22 — — 22 Total other liabilities — 70 — — 70 Total liabilities $ 1,387 $ 5,884 $ — $ (4,101) $ 3,170 Percentage of total liabilities prior to netting 19 % 81 % — % (a) ASC 815, Derivatives and Hedging, permits the netting of derivative receivables and derivative payables under legally enforceable master netting agreements and permits the netting of cash collateral. Netting is applicable to derivatives not designated as hedging instruments included in trading assets or trading liabilities and derivatives designated as hedging instruments included in other assets or other liabilities. Netting is allocated to the derivative products based on the net fair value of each product. (b) Includes supranational securities. (c) Includes seed capital, private equity investments and other assets. Assets and liabilities measured at fair value on a recurring basis at Dec. 31, 2023 Total carrying (dollars in millions) Level 1 Level 2 Level 3 Netting (a) Assets: Available-for-sale securities: Non-U.S. government (b) $ 2,439 $ 15,943 $ — $ — $ 18,382 U.S. Treasury 16,604 — — — 16,604 Agency RMBS — 13,111 — — 13,111 Agency commercial MBS — 7,729 — — 7,729 Foreign covered bonds — 6,334 — — 6,334 CLOs — 6,137 — — 6,137 Non-agency commercial MBS — 2,935 — — 2,935 U.S. government agencies — 2,901 — — 2,901 Non-agency RMBS — 1,740 — — 1,740 Other ABS — 943 — — 943 Other debt securities — 1 — — 1 Total available-for-sale securities 19,043 57,774 — — 76,817 Trading assets: Debt instruments 1,246 2,255 — — 3,501 Equity instruments 4,518 — — — 4,518 Derivative assets not designated as hedging: Interest rate 7 1,053 — (751) 309 Foreign exchange — 9,227 — (7,498) 1,729 Equity and other contracts — 8 — (7) 1 Total derivative assets not designated as hedging 7 10,288 — (8,256) 2,039 Total trading assets 5,771 12,543 — (8,256) 10,058 Other assets : Derivative assets designated as hedging: Interest rate — 214 — — 214 Foreign exchange — 22 — — 22 Total derivative assets designated as hedging — 236 — — 236 Other assets (c) 486 386 — — 872 Total other assets 486 622 — — 1,108 Assets measured at NAV (c) 153 Total assets $ 25,300 $ 70,939 $ — $ (8,256) $ 88,136 Percentage of total assets prior to netting 26 % 74 % — % Liabilities: Trading liabilities: Debt instruments $ 2,508 $ 12 $ — $ — $ 2,520 Equity instruments 23 — — — 23 Derivative liabilities not designated as hedging: Interest rate 8 1,339 — (635) 712 Foreign exchange — 9,282 — (6,341) 2,941 Equity and other contracts 9 135 — (114) 30 Total derivative liabilities not designated as hedging 17 10,756 — (7,090) 3,683 Total trading liabilities 2,548 10,768 — (7,090) 6,226 Other liabilities: Derivative liabilities designated as hedging: Foreign exchange — 173 — — 173 Total derivative liabilities designated as hedging — 173 — — 173 Other liabilities — 22 — — 22 Total other liabilities — 195 — — 195 Total liabilities $ 2,548 $ 10,963 $ — $ (7,090) $ 6,421 Percentage of total liabilities prior to netting 19 % 81 % — % (a) ASC 815, Derivatives and Hedging, permits the netting of derivative receivables and derivative payables under legally enforceable master netting agreements and permits the netting of cash collateral. Netting is applicable to derivatives not designated as hedging instruments included in trading assets or trading liabilities and derivatives designated as hedging instruments included in other assets or other liabilities. Netting is allocated to the derivative products based on the net fair value of each product. (b) Includes supranational securities. (c) Includes seed capital, private equity investments and other assets.
Details Of Certain Items Measured At Fair Value on Recurring Basis	Details of certain available-for-sale securities measured at fair value on a recurring basis March 31, 2024 Dec. 31, 2023 Total carrying value (b) Ratings (a) Total carrying value (b) Ratings (a) AAA/ A+/ BBB+/ BB+ and Not rated AAA/ A+/ BBB+/ BB+ and Not rated (dollars in millions) Non-agency RMBS, originated in: 2008-2024 $ 1,459 100 % — % — % — % — % $ 1,487 100 % — % — % — % — % 2007 and earlier 244 5 12 1 40 42 253 5 13 1 40 41 Total non-agency RMBS $ 1,703 86 % 2 % — % 6 % 6 % $ 1,740 86 % 2 % — % 6 % 6 % Non-agency commercial MBS originated in: 2009-2023 $ 2,934 100 % — % — % — % — % $ 2,935 100 % — % — % — % — % Foreign covered bonds: Canada $ 2,454 100 % — % — % — % — % $ 2,473 100 % — % — % — % — % UK 1,115 100 — — — — 1,035 100 — — — — Australia 659 100 — — — — 689 100 — — — — Germany 647 100 — — — — 664 100 — — — — Other 2,386 100 — — — — 1,473 100 — — — — Total foreign covered bonds $ 7,261 100 % — % — % — % — % $ 6,334 100 % — % — % — % — % Non-U.S. government: Germany $ 2,712 100 % — % — % — % — % $ 2,658 100 % — % — % — % — % UK 2,211 100 — — — — 1,316 100 — — — — France 1,832 100 — — — — 1,562 100 — — — — Canada 1,601 90 10 — — — 1,336 95 5 — — — Belgium 868 100 — — — — 511 100 — — — — Spain 612 — 8 92 — — 293 — 17 83 — — Finland 515 100 — — — — 282 100 — — — — Singapore 500 100 — — — — 302 100 — — — — Japan 449 — 100 — — — 410 — 100 — — — Netherlands 442 100 — — — — 334 100 — — — — Norway 374 100 — — — — 374 100 — — — — Other (c) 1,645 61 17 13 9 — 1,348 70 3 17 10 — Supranational 10,556 100 — — — — 7,656 100 — — — — Total non-U.S. government: $ 24,317 92 % 4 % 3 % 1 % — % $ 18,382 94 % 3 % 2 % 1 % — % (a) Represents ratings by S&P or the equivalent. (b) At March 31, 2024 and Dec. 31, 2023, non-U.S. government securities were included in Level 1 and Level 2 in the valuation hierarchy. All other assets in the table are Level 2 assets in the valuation hierarchy. (c) Includes non-investment grade non-U.S. securities related to Brazil of $146 million at March 31, 2024 and $140 million at Dec. 31, 2023.
Assets Measured at Fair Value on Nonrecurring Basis	Assets measured at fair value on a nonrecurring basis March 31, 2024 Dec. 31, 2023 Total carrying Total carrying (in millions) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Loans (a) $ — $ 27 $ — $ 27 $ — $ 28 $ — $ 28 Other assets (b) — 495 — 495 — 481 — 481 Total assets at fair value on a nonrecurring basis $ — $ 522 $ — $ 522 $ — $ 509 $ — $ 509 (a) The fair value of these loans was unchanged in the first quarter of 2024 and the fourth quarter of 2023, based on the fair value of the underlying collateral, as required by guidance in ASC 326, Financial Instruments – Credit Losses, with an offset to the allowance for credit losses. (b) Includes non-readily marketable equity securities carried at cost with upward or downward adjustments and other assets received in satisfaction of debt.
Summary of Financial Instruments Not Carried at Fair Value	The following tables present the estimated fair value and the carrying amount of financial instruments not carried at fair value on the consolidated balance sheet at March 31, 2024 and Dec. 31, 2023, by caption on the consolidated balance sheet and by the valuation hierarchy. Summary of financial instruments March 31, 2024 (in millions) Level 1 Level 2 Level 3 Total Carrying Assets: Interest-bearing deposits with the Federal Reserve and other central banks $ — $ 119,197 $ — $ 119,197 $ 119,197 Interest-bearing deposits with banks — 10,647 — 10,647 10,636 Federal funds sold and securities purchased under resale agreements — 29,661 — 29,661 29,661 Securities held-to-maturity 9,162 34,051 — 43,213 48,404 Loans (a) — 71,851 — 71,851 72,694 Other financial assets 5,305 2,359 — 7,664 7,664 Total $ 14,467 $ 267,766 $ — $ 282,233 $ 288,256 Liabilities: Noninterest-bearing deposits $ — $ 63,405 $ — $ 63,405 $ 63,405 Interest-bearing deposits — 241,685 — 241,685 245,615 Federal funds purchased and securities sold under repurchase agreements — 15,112 — 15,112 15,112 Payables to customers and broker-dealers — 19,392 — 19,392 19,392 Borrowings — 1,202 — 1,202 1,202 Long-term debt — 31,549 — 31,549 32,396 Total $ — $ 372,345 $ — $ 372,345 $ 377,122 (a) Does not include the leasing portfolio. Summary of financial instruments Dec. 31, 2023 (in millions) Level 1 Level 2 Level 3 Total estimated Carrying Assets: Interest-bearing deposits with the Federal Reserve and other central banks $ — $ 111,550 $ — $ 111,550 $ 111,550 Interest-bearing deposits with banks — 12,134 — 12,134 12,139 Federal funds sold and securities purchased under resale agreements — 28,900 — 28,900 28,900 Securities held-to-maturity 9,545 35,166 — 44,711 49,578 Loans (a) — 65,026 — 65,026 65,977 Other financial assets 4,922 2,149 — 7,071 7,071 Total $ 14,467 $ 254,925 $ — $ 269,392 $ 275,215 Liabilities: Noninterest-bearing deposits $ — $ 58,274 $ — $ 58,274 $ 58,274 Interest-bearing deposits — 221,463 — 221,463 225,395 Federal funds purchased and securities sold under repurchase agreements — 14,507 — 14,507 14,507 Payables to customers and broker-dealers — 18,395 — 18,395 18,395 Borrowings — 1,274 — 1,274 1,274 Long-term debt — 30,596 — 30,596 31,257 Total $ — $ 344,509 $ — $ 344,509 $ 349,102 (a) Does not include the leasing portfolio.

Fair value option (Tables)

Fair value option (Tables)	3 Months Ended
	Mar. 31, 2024
Fair Value Disclosures [Abstract]
Assets and Liabilities of Consolidated Investment Management Funds, at Fair Value	The following table presents the assets and liabilities of consolidated investment management funds, at fair value. Assets and liabilities of consolidated investment management funds, at fair value March 31, 2024 Dec. 31, 2023 (in millions) Assets of consolidated investment management funds: Trading assets $ 547 $ 510 Other assets 21 16 Total assets of consolidated investment management funds $ 568 $ 526 Liabilities of consolidated investment management funds: Other liabilities $ 5 $ 1 Total liabilities of consolidated investment management funds $ 5 $ 1

Derivative instruments (Tables)

Derivative instruments (Tables)	3 Months Ended
	Mar. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Gains (Losses) Related to Hedging	The following table presents the pre-tax gains (losses) related to our fair value and cash flow hedging activities recognized in the consolidated income statement. Income statement impact of fair value and cash flow hedges (in millions) Location of gains (losses) 1Q24 4Q23 1Q23 Interest rate fair value hedges of available-for-sale securities Derivative Interest income $ 449 $ (1,023) $ (435) Hedged item Interest income (449) 1,022 434 Interest rate fair value hedges of long-term debt Derivative Interest expense (221) 645 279 Hedged item Interest expense 221 (645) (279) Interest rate fair value hedges of loans Derivative Interest expense (1) — — Hedged item Interest expense 1 — — Cash flow hedges of forecasted FX exposures Gain (loss) reclassified from OCI into income Staff expense 2 1 (3) Gain reclassified from OCI into income Investment and other revenue — 1 — Gain (loss) recognized in the consolidated income statement due to fair value and cash flow hedging relationships $ 2 $ 1 $ (4)
Impacts of Hedging Derivatives in Net Investment Hedging Relationships	The following table presents the impact of hedging derivatives used in net investment hedging relationships. Impact of derivative instruments used in net investment hedging relationships (in millions) Derivatives in net investment hedging relationships Gain or (loss) recognized in accumulated OCI on derivatives Location of gain or (loss) reclassified from accumulated OCI into income Gain or (loss) reclassified from accumulated OCI into income 1Q24 4Q23 1Q23 1Q24 4Q23 1Q23 FX contracts $ 198 $ (355) $ (111) Net interest income $ — $ — $ —
Summary of Hedged Items in Fair Value Hedging Relationships	The following table presents information on the hedged items in fair value hedging relationships. Hedged items in fair value hedging relationships Carrying amount of hedged Hedge accounting basis adjustment increase (decrease) (a) (in millions) March 31, 2024 Dec. 31, 2023 March 31, 2024 Dec. 31, 2023 Available-for-sale securities (b)(c) $ 33,228 $ 29,941 $ (2,161) $ (1,767) Loans (d) $ 251 $ — $ 1 $ — Long-term debt $ 22,288 $ 21,854 $ (1,062) $ (846) (a) Includes $405 million and $434 million of basis adjustment decreases on discontinued hedges associated with available-for-sale securities at March 31, 2024 and Dec. 31, 2023, respectively, and $21 million and $26 million of basis adjustment decreases on discontinued hedges associated with long-term debt at March 31, 2024 and Dec. 31, 2023, respectively. (b) Carrying amount represents the amortized cost. (c) At March 31, 2024, the amortized cost of the available-for-sale securities included in closed portfolios subject to portfolio layer method hedging was $5.3 billion, of which $2.5 billion was designated as hedged. The cumulative basis adjustments for active hedging relationships associated with such hedges as of March 31, 2024 was a decrease of $12 million.
Impact of Derivative Instruments on the Balance Sheet	The following table summarizes the notional amount and carrying values of our total derivative portfolio. Impact of derivative instruments on the balance sheet Notional value Asset derivatives Liability derivatives March 31, 2024 Dec. 31, 2023 March 31, 2024 Dec. 31, 2023 March 31, 2024 Dec. 31, 2023 (in millions) Derivatives designated as hedging instruments: (a)(b) Interest rate contracts $ 57,161 $ 52,808 $ 278 $ 214 $ — $ — Foreign exchange contracts 11,243 11,099 106 22 48 173 Total derivatives designated as hedging instruments $ 384 $ 236 $ 48 $ 173 Derivatives not designated as hedging instruments: (b)(c) Interest rate contracts $ 157,599 $ 155,535 $ 955 $ 1,060 $ 1,308 $ 1,347 Foreign exchange contracts 1,016,850 944,241 4,668 9,227 4,380 9,282 Equity contracts 4,351 3,886 7 8 96 138 Credit contracts 255 220 — — 5 6 Total derivatives not designated as hedging instruments $ 5,630 $ 10,295 $ 5,789 $ 10,773 Total derivatives fair value (d) $ 6,014 $ 10,531 $ 5,837 $ 10,946 Effect of master netting agreements (e) (4,324) (8,256) (4,101) (7,090) Fair value after effect of master netting agreements $ 1,690 $ 2,275 $ 1,736 $ 3,856 (a) The fair value of asset derivatives and liability derivatives designated as hedging instruments is recorded as other assets and other liabilities, respectively, on the consolidated balance sheet. (b) For derivative transactions settled at clearing organizations, cash collateral exchanged is deemed a settlement of the derivative each day. The settlement reduces the gross fair value of derivative assets and liabilities and results in a corresponding decrease in the effect of master netting agreements, with no impact to the consolidated balance sheet. (c) The fair value of asset derivatives and liability derivatives not designated as hedging instruments is recorded as trading assets and trading liabilities, respectively, on the consolidated balance sheet. (d) Fair values are on a gross basis, before consideration of master netting agreements, as required by ASC 815, Derivatives and Hedging. (e) Effect of master netting agreements includes cash collateral received and paid of $998 million and $775 million, respectively, at March 31, 2024, and $2,353 million and $1,187 million, respectively, at Dec. 31, 2023.
Revenue from Foreign Exchange and Other Trading	The following table presents our foreign exchange revenue and other trading revenue. Foreign exchange revenue and other trading revenue (in millions) 1Q24 4Q23 1Q23 Foreign exchange revenue $ 152 $ 143 $ 176 Other trading revenue 69 47 45
Fair Value of Derivative Contracts Falling under Early Termination Provisions that were in Net Liability Position	The following table shows the aggregate fair value of OTC derivative contracts in net liability positions that contained credit risk-contingent features and the value of collateral that has been posted. March 31, 2024 Dec. 31, 2023 (in millions) Aggregate fair value of OTC derivatives in net liability positions (a) $ 1,002 $ 1,003 Collateral posted $ 1,009 $ 1,001 (a) Before consideration of cash collateral. The following table shows the fair value of contracts falling under early termination provisions that were in net liability positions for three key ratings triggers. Potential close-out exposures (fair value) (a) March 31, 2024 Dec. 31, 2023 (in millions) If The Bank of New York Mellon’s rating changed to: (b) A3/A- $ 82 $ 115 Baa2/BBB $ 418 $ 792 Ba1/BB+ $ 968 $ 1,920 (a) The amounts represent potential total close-out values if The Bank of New York Mellon’s long-term issuer rating were to immediately drop to the indicated levels, and do not reflect collateral posted. (b) Represents ratings by Moody’s/S&P.
Offsetting Assets	The following tables present derivative and financial instruments and their related offsets. There were no derivative instruments or financial instruments subject to a legally enforceable netting agreement for which we are not currently netting. Offsetting of derivative assets and financial assets at March 31, 2024 Gross assets recognized Gross amounts offset in the balance sheet Net assets recognized in the balance sheet Gross amounts not offset in the balance sheet (in millions) (a) Financial instruments Cash collateral received Net amount Derivatives subject to netting arrangements: Interest rate contracts $ 1,016 $ 853 $ 163 $ 31 $ — $ 132 Foreign exchange contracts 4,546 3,464 1,082 62 — 1,020 Equity and other contracts 7 7 — — — — Total derivatives subject to netting arrangements 5,569 4,324 1,245 93 — 1,152 Total derivatives not subject to netting arrangements 445 — 445 — — 445 Total derivatives 6,014 4,324 1,690 93 — 1,597 Reverse repurchase agreements 179,182 162,579 (b) 16,603 16,581 — 22 Securities borrowing 13,058 — 13,058 12,365 — 693 Total $ 198,254 $ 166,903 $ 31,351 $ 29,039 $ — $ 2,312 (a) Includes the effect of netting agreements and net cash collateral received. The offset related to the OTC derivatives was allocated to the various types of derivatives based on the net positions. (b) Offsetting of reverse repurchase agreements relates to our involvement in the Fixed Income Clearing Corporation (“FICC”), where we settle government securities transactions on a net basis for payment and delivery through the Fedwire system. Offsetting of derivative assets and financial assets at Dec. 31, 2023 Gross assets recognized Gross amounts offset in the balance sheet Net assets recognized Gross amounts not offset in the balance sheet (in millions) (a) Financial instruments Cash collateral received Net amount Derivatives subject to netting arrangements: Interest rate contracts $ 979 $ 751 $ 228 $ 60 $ — $ 168 Foreign exchange contracts 8,552 7,498 1,054 320 — 734 Equity and other contracts 7 7 — — — — Total derivatives subject to netting arrangements 9,538 8,256 1,282 380 — 902 Total derivatives not subject to netting arrangements 993 — 993 — — 993 Total derivatives 10,531 8,256 2,275 380 — 1,895 Reverse repurchase agreements 169,092 150,667 (b) 18,425 18,422 — 3 Securities borrowing 10,475 — 10,475 10,011 — 464 Total $ 190,098 $ 158,923 $ 31,175 $ 28,813 $ — $ 2,362 (a) Includes the effect of netting agreements and net cash collateral received. The offset related to the OTC derivatives was allocated to the various types of derivatives based on the net positions. (b) Offsetting of reverse repurchase agreements relates to our involvement in the FICC, where we settle government securities transactions on a net basis for payment and delivery through the Fedwire system.
Offsetting Liabilities	Offsetting of derivative liabilities and financial liabilities at March 31, 2024 Net liabilities recognized in the balance sheet Gross liabilities recognized Gross amounts offset in the balance sheet Gross amounts not offset in the balance sheet (in millions) (a) Financial instruments Cash collateral pledged Net amount Derivatives subject to netting arrangements: Interest rate contracts $ 1,002 $ 536 $ 466 $ 55 $ — $ 411 Foreign exchange contracts 4,205 3,517 688 150 — 538 Equity and other contracts 90 48 42 18 — 24 Total derivatives subject to netting arrangements 5,297 4,101 1,196 223 — 973 Total derivatives not subject to netting arrangements 540 — 540 — — 540 Total derivatives 5,837 4,101 1,736 223 — 1,513 Repurchase agreements 174,752 162,579 (b) 12,173 12,156 17 — Securities lending 2,939 — 2,939 2,839 — 100 Total $ 183,528 $ 166,680 $ 16,848 $ 15,218 $ 17 $ 1,613 (a) Includes the effect of netting agreements and net cash collateral paid. The offset related to the OTC derivatives was allocated to the various types of derivatives based on the net positions. (b) Offsetting of repurchase agreements relates to our involvement in the FICC, where we settle government securities transactions on a net basis for payment and delivery through the Fedwire system. Offsetting of derivative liabilities and financial liabilities at Dec. 31, 2023 Net liabilities recognized Gross liabilities recognized Gross amounts offset in the balance sheet Gross amounts not offset in the balance sheet (in millions) (a) Financial instruments Cash collateral pledged Net amount Derivatives subject to netting arrangements: Interest rate contracts $ 1,118 $ 635 $ 483 $ 78 $ — $ 405 Foreign exchange contracts 8,454 6,341 2,113 93 — 2,020 Equity and other contracts 128 114 14 — — 14 Total derivatives subject to netting arrangements 9,700 7,090 2,610 171 — 2,439 Total derivatives not subject to netting arrangements 1,246 — 1,246 — — 1,246 Total derivatives 10,946 7,090 3,856 171 — 3,685 Repurchase agreements 162,661 150,667 (b) 11,994 11,966 28 — Securities lending 2,513 — 2,513 2,404 — 109 Total $ 176,120 $ 157,757 $ 18,363 $ 14,541 $ 28 $ 3,794 (a) Includes the effect of netting agreements and net cash collateral paid. The offset related to the OTC derivatives was allocated to the various types of derivatives based on the net positions. (b) Offsetting of repurchase agreements relates to our involvement in the FICC, where we settle government securities transactions on a net basis for payment and delivery through the Fedwire system.
Transfer of Certain Financial Assets Accounted for as Secured Borrowings	The following table presents the contract value of repurchase agreements and securities lending transactions accounted for as secured borrowings by the type of collateral provided to counterparties. Repurchase agreements and securities lending transactions accounted for as secured borrowings March 31, 2024 Dec. 31, 2023 Remaining contractual maturity Total Remaining contractual maturity Total (in millions) Overnight and continuous Up to 30 days 30-90 days Over 90 days Overnight and continuous Up to 30 days 30-90 days Over 90 Repurchase agreements: U.S. Treasury $ 135,849 $ 50 $ 1,613 $ 398 $ 137,910 $ 128,304 $ 15 $ 1,409 $ 510 $ 130,238 Agency RMBS 28,705 1 814 419 29,939 25,815 — 896 120 26,831 Sovereign debt/sovereign guaranteed 912 1,649 — — 2,561 1,049 — — — 1,049 Corporate bonds 97 121 1,348 583 2,149 103 72 1,315 590 2,080 State and political subdivisions 43 33 496 241 813 37 38 449 257 781 U.S. government agencies 28 — 122 62 212 44 — 61 32 137 Other debt securities 106 100 49 2 257 4 180 73 24 281 Equity securities — 44 533 334 911 — 10 1,172 82 1,264 Total $ 165,740 $ 1,998 $ 4,975 $ 2,039 $ 174,752 $ 155,356 $ 315 $ 5,375 $ 1,615 $ 162,661 Securities lending: Agency RMBS $ 103 $ — $ — $ — $ 103 $ 111 $ — $ — $ — $ 111 Other debt securities 45 — — — 45 25 — — — 25 Equity securities 2,791 — — — 2,791 2,377 — — — 2,377 Total $ 2,939 $ — $ — $ — $ 2,939 $ 2,513 $ — $ — $ — $ 2,513 Total secured borrowings $ 168,679 $ 1,998 $ 4,975 $ 2,039 $ 177,691 $ 157,869 $ 315 $ 5,375 $ 1,615 $ 165,174

Commitments and contingent li_2

Commitments and contingent liabilities (Tables)	3 Months Ended
	Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Summary of Off-Balance Sheet Credit Risks, Net of Participations	The following table presents a summary of our off-balance sheet credit risks. Off-balance sheet credit risks March 31, 2024 Dec. 31, 2023 (in millions) Lending commitments $ 49,872 $ 46,518 Standby letters of credit (“SBLC”) (a) 1,694 1,816 Commercial letters of credit 66 41 Securities lending indemnifications (b)(c) 541,366 492,739 (a) Net of participations totaling $135 million at March 31, 2024 and $163 million at Dec. 31, 2023. (b) Excludes the indemnification for securities for which BNY Mellon acts as an agent on behalf of CIBC Mellon clients, which totaled $59 billion at March 31, 2024 and $59 billion at Dec. 31, 2023. (c)
Standby Letters of Credits by Investment Grade	The table below shows SBLCs by investment grade: Standby letters of credit March 31, 2024 Dec. 31, 2023 Investment grade 71 % 74 % Non-investment grade 29 % 26 %
Summary of Credit Exposure in the Financial Institutions and Commercial Portfolios	The tables below present our credit exposure in the financial institutions and commercial portfolios. Financial institutions portfolio exposure (in billions) March 31, 2024 Loans Unfunded Total exposure Securities industry $ 2.6 $ 17.9 $ 20.5 Asset managers 1.4 8.1 9.5 Banks 7.5 1.4 8.9 Insurance 0.1 3.8 3.9 Government — 0.3 0.3 Other 0.5 0.8 1.3 Total $ 12.1 $ 32.3 $ 44.4 Commercial portfolio exposure (in billions) March 31, 2024 Loans Unfunded Total exposure Services and other $ 1.4 $ 3.5 $ 4.9 Manufacturing 0.8 3.7 4.5 Energy and utilities 0.2 4.0 4.2 Media and telecom — 0.7 0.7 Total $ 2.4 $ 11.9 $ 14.3

Business segments (Tables)

Business segments (Tables)	3 Months Ended
	Mar. 31, 2024
Segment Reporting [Abstract]
Contribution of Segments to Overall Profitability	The following consolidating schedules present the contribution of our segments to our overall profitability. For the quarter ended March 31, 2024 Securities Market and Wealth Services Investment Other Consolidated (dollars in millions) Total fee and other revenue $ 1,556 $ 1,094 $ 805 (a) $ 30 $ 3,485 (a) Net interest income (expense) 583 423 41 (7) 1,040 Total revenue 2,139 1,517 846 (a) 23 4,525 (a) Provision for credit losses 11 5 (1) 12 27 Noninterest expense 1,537 834 740 65 3,176 Income (loss) before income taxes $ 591 $ 678 $ 107 (a) $ (54) $ 1,322 (a) Pre-tax operating margin (b) 28 % 45 % 13 % N/M 29 % Average assets $ 191,544 $ 123,552 $ 26,272 $ 62,617 $ 403,985 (a) Total fee and other revenue, total revenue and income before income taxes are net of income attributable to noncontrolling interests related to consolidated investment management funds of $2 million. (b) Income before income taxes divided by total revenue. N/M – Not meaningful. For the quarter ended Dec. 31, 2023 Securities Market and Wealth Services Investment Other (a) Consolidated (a) (dollars in millions) Total fee and other revenue $ 1,544 $ 1,060 $ 634 (b) $ 21 $ 3,259 (b) Net interest income (expense) 635 436 45 (15) 1,101 Total revenue 2,179 1,496 679 (b) 6 4,360 (b) Provision for credit losses 64 28 (2) (6) 84 Noninterest expense 1,653 837 685 820 3,995 Income (loss) before income taxes $ 462 $ 631 $ (4) (b) $ (808) $ 281 (b) Pre-tax operating margin (c) 21 % 42 % (1) % N/M 6 % Average assets $ 200,040 $ 132,357 $ 26,341 $ 42,867 $ 401,605 (a) The prior period was restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 for additional information. (b) Total fee and other revenue, total revenue and income before income taxes are net of (loss) attributable to noncontrolling interests related to consolidated investment management funds of $(2) million. (c) Income before income taxes divided by total revenue. N/M – Not meaningful. For the quarter ended March 31, 2023 Securities Market and Wealth Services Investment Other (a) Consolidated (a) (dollars in millions) Total fee and other revenue $ 1,443 $ 1,018 $ 785 (b) $ 41 $ 3,287 (b) Net interest income (expense) 666 453 45 (36) 1,128 Total revenue 2,109 1,471 830 (b) 5 4,415 (b) Provision for credit losses — — — 27 27 Noninterest expense 1,540 782 737 41 3,100 Income (loss) before income taxes $ 569 $ 689 $ 93 (b) $ (63) $ 1,288 (b) Pre-tax operating margin (c) 27 % 47 % 11 % N/M 29 % Average assets $ 196,560 $ 132,005 $ 28,370 $ 50,343 $ 407,278 (a) The prior period was restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 for additional information. (b) Total fee and other revenue, total revenue and income before income taxes are net of income (loss) attributable to noncontrolling interests related to consolidated investment management funds of $— million. (c) Income before income taxes divided by total revenue. N/M – Not meaningful.

Supplemental information to t_2

Supplemental information to the Consolidated Statement of Cash Flows (Tables)	3 Months Ended
	Mar. 31, 2024
Supplemental Cash Flow Information [Abstract]
Noncash Investing and Financing Transactions that are Not Reflected in Consolidated Statement of Cash Flows	Non-cash investing and financing transactions that, appropriately, are not reflected in the consolidated statement of cash flows are listed below. Non-cash investing and financing transactions Three months ended March 31, (in millions) 2024 2023 Change in assets of consolidated investment management funds $ 42 $ 227 Change in liabilities of consolidated investment management funds 4 — Change in nonredeemable noncontrolling interests of consolidated investment management funds 61 65 Securities purchased not settled 1,010 240 Securities sold not settled (6) (162) Premises and equipment/operating lease obligations 45 98 Excise tax on share repurchases 6 10

Accounting changes and new acco

Accounting changes and new accounting guidance - Cumulative Effect of Adoption of New Guidance (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
		Mar. 31, 2024		Dec. 31, 2023		Mar. 31, 2023		Sep. 30, 2023	[7],[10]	Dec. 31, 2022	[9],[11]
Consolidated Income Statement
Investment and other revenue	[1]	$ 182		$ 43		$ 131
Total fee and other revenue	[1]	3,487		3,257		3,287
Total revenue		4,527		4,358		4,415
Income before income taxes	[1]	1,324		279		1,288
Provision for income taxes	[1]	297		73		306
Net income	[1],[3]	1,027	[2]	206		982	[2]
Net income applicable to shareholders of The Bank of New York Mellon Corporation		1,025	[2]	208		982	[2]
Net income applicable to common shareholders of The Bank of New York Mellon Corporation		$ 953		$ 162		$ 911
Earnings per share applicable to common shareholders of The Bank of New York Mellon Corporation
Basic (usd per share)	[4]	$ 1.26		$ 0.21		$ 1.13
Diluted (usd per share)	[4]	$ 1.25		$ 0.21		$ 1.13
Consolidated Balance Sheet
Other assets	[5]	$ 24,103		$ 25,909
Total assets	[5]	434,728		409,877
Accrued taxes and other expenses	[5]	4,395		5,411
Other liabilities	[5]	10,245		9,028
Total liabilities	[5]	393,966		368,972
Retained earnings	[5]	40,178		39,549
Total The Bank of New York Mellon Corporation shareholders’ equity	[5]	40,569		40,770
Total permanent equity		40,680	[5],[6]	40,820	[5],[6],[7],[8]	$ 40,591	[9]	$ 40,914		$ 40,620
Total liabilities, temporary equity and permanent equity		$ 434,728		409,877
Previously reported
Consolidated Income Statement
Investment and other revenue				(4)		79
Total fee and other revenue				3,210		3,235
Total revenue				4,311		4,363
Income before income taxes				232		1,236
Provision for income taxes				29		260
Net income				203		976
Net income applicable to shareholders of The Bank of New York Mellon Corporation				205		976
Net income applicable to common shareholders of The Bank of New York Mellon Corporation				$ 159		$ 905
Earnings per share applicable to common shareholders of The Bank of New York Mellon Corporation
Basic (usd per share)				$ 0.21		$ 1.13
Diluted (usd per share)				$ 0.21		$ 1.12
Consolidated Balance Sheet
Other assets				$ 25,985
Total assets				409,953
Accrued taxes and other expenses				5,567
Other liabilities				8,844
Total liabilities				368,944
Retained earnings				39,653
Total The Bank of New York Mellon Corporation shareholders’ equity				40,874
Total permanent equity				40,924
Total liabilities, temporary equity and permanent equity				409,953
Adjustment
Consolidated Income Statement
Investment and other revenue				47		$ 52
Total fee and other revenue				47		52
Total revenue				47		52
Income before income taxes				47		52
Provision for income taxes				44		46
Net income				3		6
Net income applicable to shareholders of The Bank of New York Mellon Corporation				3		6
Net income applicable to common shareholders of The Bank of New York Mellon Corporation				3		$ 6
Consolidated Balance Sheet
Other assets				(76)
Total assets				(76)
Accrued taxes and other expenses				(156)
Other liabilities				184
Total liabilities				28
Retained earnings				(104)
Total The Bank of New York Mellon Corporation shareholders’ equity				(104)
Total permanent equity				(104)
Total liabilities, temporary equity and permanent equity				$ (76)
[1]Prior periods were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information[2]Prior period was restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.[3]Prior periods were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.[4]Prior periods were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.[5]Prior period balances were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.[6]Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $36,427 million at Dec. 31, 2023 and $36,226 million at March 31, 2024.[7]Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $36,020 million at Sept. 30, 2023 and $36,427 million at Dec. 31, 2023.[8]Retained earnings was restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.[9]Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $35,775 million at Dec. 31, 2022 and $35,681 million at March 31, 2023.[10]Retained earnings was restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.[11]Retained earnings was restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.

Acquisitions and dispositions -

Acquisitions and dispositions - Narrative (Details)	3 Months Ended
	Mar. 31, 2024 USD ($)
Business Acquisition [Line Items]
Contingent payments	$ 5,000,000
Increase in contingent consideration liability	1,000,000
Contingent consideration receivable, lower range	20,000,000
Contingent consideration receivable, upper range	45,000,000
Contingent receipts	0
Dispositions 2024
Business Acquisition [Line Items]
Contingent consideration receivable	$ 30,000,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Dispositions 2024
Business Acquisition [Line Items]
Contingent consideration period	4 years
Acquisitions In 2024
Business Acquisition [Line Items]
Contingent consideration payable	$ 20,000,000
Potential obligation to pay additional consideration, lower range	15,000,000
Potential obligation to pay additional consideration, upper range	$ 20,000,000
Contingent consideration payment period	1 year

Securities - Amortized Cost, Gr

Securities - Amortized Cost, Gross Unrealized Gains and Losses and Fair Value (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Available-for-sale:
Amortized cost	$ 94,641	$ 80,678
Gains	361	425
Losses	4,497	4,286
Fair value	90,505	76,817
Held-to-maturity:
Amortized cost	48,404	49,578
Gains	3	6
Losses	5,194	4,873
Securities held-to-maturity	43,213	44,711
Amortized cost, Total	143,045	130,256
Gross unrealized, Gain, Total	364	431
Gross unrealized, Losses, Total	9,691	9,159
Fair value, Total	133,718	121,528
Debt securities, available-for-sale, allowance for credit loss	1	1
Debt securities, available-for-sale and held-to-maturity, allowance for credit loss	1	1
AOCI, transfers from AFS to HTM Securities, gross unrealized gains	230	250
AOCI, transfers from AFS to HTM Securities, gross unrealized losses	138	146
Non-U.S. Government
Available-for-sale:
Amortized cost	24,988	18,998
Gains	40	68
Losses	711	684
Fair value	24,317	18,382
Held-to-maturity:
Amortized cost	2,093	2,137
Gains	0	3
Losses	66	67
Securities held-to-maturity	2,027	2,073
U.S. Treasury
Available-for-sale:
Amortized cost	21,960	18,193
Gains	52	63
Losses	1,824	1,652
Fair value	20,188	16,604
Held-to-maturity:
Amortized cost	8,763	9,123
Gains	0	0
Losses	617	612
Securities held-to-maturity	8,146	8,511
Agency residential mortgage-backed securities (“RMBS”)
Available-for-sale:
Amortized cost	17,000	13,457
Gains	109	119
Losses	492	465
Fair value	16,617	13,111
Held-to-maturity:
Amortized cost	28,805	29,740
Gains	2	1
Losses	3,791	3,493
Securities held-to-maturity	25,016	26,248
Agency commercial mortgage-backed securities (“MBS”)
Available-for-sale:
Amortized cost	8,083	8,191
Gains	63	69
Losses	562	531
Fair value	7,584	7,729
Held-to-maturity:
Amortized cost	3,581	3,411
Gains	0	1
Losses	304	296
Securities held-to-maturity	3,277	3,116
Foreign covered bonds
Available-for-sale:
Amortized cost	7,420	6,489
Gains	17	25
Losses	176	180
Fair value	7,261	6,334
Collateralized loan obligations (“CLOs”)
Available-for-sale:
Amortized cost	6,255	6,142
Gains	11	5
Losses	1	10
Fair value	6,265	6,137
Held-to-maturity:
Amortized cost	983	983
Gains	0	0
Losses	0	1
Securities held-to-maturity	983	982
Non-agency commercial MBS
Available-for-sale:
Amortized cost	3,219	3,245
Gains	2	1
Losses	287	311
Fair value	2,934	2,935
U.S. government agencies
Available-for-sale:
Amortized cost	2,887	3,053
Gains	37	42
Losses	188	194
Fair value	2,736	2,901
Held-to-maturity:
Amortized cost	4,144	4,146
Gains	0	0
Losses	414	401
Securities held-to-maturity	3,730	3,745
Non-agency RMBS
Available-for-sale:
Amortized cost	1,852	1,883
Gains	30	32
Losses	179	175
Fair value	1,703	1,740
Held-to-maturity:
Amortized cost	24	26
Gains	1	1
Losses	1	1
Securities held-to-maturity	24	26
Other asset-backed securities (“ABS”)
Available-for-sale:
Amortized cost	976	1,026
Gains	0	1
Losses	77	84
Fair value	899	943
Other debt securities
Available-for-sale:
Amortized cost	1	1
Gains	0	0
Losses	0	0
Fair value	1	1
Held-to-maturity:
Amortized cost	11	12
Gains	0	0
Losses	1	2
Securities held-to-maturity	$ 10	$ 10

Securities - Net Securities Gai

Securities - Net Securities Gains (Losses) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Securities [Abstract]
Realized gross gains	$ 4	$ 1	$ 14
Realized gross losses	(5)	(49)	(15)
Total net securities (losses)	$ (1)	$ (48)	$ (1)

Securities - Pre-Tax Net Securi

Securities - Pre-Tax Net Securities Gains (Losses) by Type (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Total net securities (losses)	$ (1)	$ (48)	$ (1)
U.S. Treasury
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Total net securities (losses)	(1)	(49)	(8)
Non-agency RMBS
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Total net securities (losses)	0	0	2
Other
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Total net securities (losses)	$ 0	$ 1	$ 5

Securities - Narrative (Details

Securities - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Securities [Abstract]
Debt securities, available-for-sale and held-to-maturity, allowance for credit loss	$ 1	$ 1
AOCI, transfers from AFS to HTM Securities, gross unrealized losses	$ 138	$ 146

Securities - Fair Value of Inve

Securities - Fair Value of Investments with Continuous Unrealized Loss Position (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Less than 12 months, Fair value	$ 21,734	$ 8,373
Less than 12 months, Unrealized losses	178	112
12 months or more, Fair value	49,568	53,761
12 months or more, Unrealized losses	4,317	4,174
Total, Fair value	71,302	62,134
Total, Unrealized losses	4,495	4,286
Debt securities, available-for-sale, unrealized loss position	71,302	62,134
Debt securities, available-for-sale, unrealized loss position, accumulated loss	4,495	4,286
AOCI, transfers from AFS to HTM Securities, gross unrealized losses, less than 12 months	0	0
AOCI, transfers from AFS to HTM Securities, gross unrealized losses, greater than 12 months	138	146
U.S. Treasury
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Less than 12 months, Fair value	4,973	694
Less than 12 months, Unrealized losses	43	48
12 months or more, Fair value	15,046	14,862
12 months or more, Unrealized losses	1,781	1,604
Total, Fair value	20,019	15,556
Total, Unrealized losses	1,824	1,652
Debt securities, available-for-sale, unrealized loss position	20,019	15,556
Debt securities, available-for-sale, unrealized loss position, accumulated loss	1,824	1,652
Non-U.S. Government
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Less than 12 months, Fair value	7,130	2,756
Less than 12 months, Unrealized losses	54	24
12 months or more, Fair value	11,188	11,767
12 months or more, Unrealized losses	657	660
Total, Fair value	18,318	14,523
Total, Unrealized losses	711	684
Debt securities, available-for-sale, unrealized loss position	18,318	14,523
Debt securities, available-for-sale, unrealized loss position, accumulated loss	711	684
Agency residential mortgage-backed securities (“RMBS”)
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Less than 12 months, Fair value	6,326	2,753
Less than 12 months, Unrealized losses	59	27
12 months or more, Fair value	6,873	6,793
12 months or more, Unrealized losses	433	438
Total, Fair value	13,199	9,546
Total, Unrealized losses	492	465
Debt securities, available-for-sale, unrealized loss position	13,199	9,546
Debt securities, available-for-sale, unrealized loss position, accumulated loss	492	465
Agency commercial mortgage-backed securities (“MBS”)
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Less than 12 months, Fair value	262	328
Less than 12 months, Unrealized losses	6	5
12 months or more, Fair value	6,965	7,060
12 months or more, Unrealized losses	556	526
Total, Fair value	7,227	7,388
Total, Unrealized losses	562	531
Debt securities, available-for-sale, unrealized loss position	7,227	7,388
Debt securities, available-for-sale, unrealized loss position, accumulated loss	562	531
Foreign covered bonds
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Less than 12 months, Fair value	1,280	268
Less than 12 months, Unrealized losses	5	1
12 months or more, Fair value	3,020	3,603
12 months or more, Unrealized losses	171	179
Total, Fair value	4,300	3,871
Total, Unrealized losses	176	180
Debt securities, available-for-sale, unrealized loss position	4,300	3,871
Debt securities, available-for-sale, unrealized loss position, accumulated loss	176	180
Non-agency commercial MBS
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Less than 12 months, Fair value	58	187
Less than 12 months, Unrealized losses	0	2
12 months or more, Fair value	2,604	2,607
12 months or more, Unrealized losses	287	309
Total, Fair value	2,662	2,794
Total, Unrealized losses	287	311
Debt securities, available-for-sale, unrealized loss position	2,662	2,794
Debt securities, available-for-sale, unrealized loss position, accumulated loss	287	311
U.S. government agencies
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Less than 12 months, Fair value	704	573
Less than 12 months, Unrealized losses	10	4
12 months or more, Fair value	1,551	1,779
12 months or more, Unrealized losses	178	190
Total, Fair value	2,255	2,352
Total, Unrealized losses	188	194
Debt securities, available-for-sale, unrealized loss position	2,255	2,352
Debt securities, available-for-sale, unrealized loss position, accumulated loss	188	194
Non-agency RMBS
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Less than 12 months, Fair value	89	30
Less than 12 months, Unrealized losses	1	1
12 months or more, Fair value	1,196	1,300
12 months or more, Unrealized losses	176	174
Total, Fair value	1,285	1,330
Total, Unrealized losses	177	175
Debt securities, available-for-sale, unrealized loss position	1,285	1,330
Debt securities, available-for-sale, unrealized loss position, accumulated loss	177	175
Collateralized loan obligations (“CLOs”)
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Less than 12 months, Fair value	912	784
Less than 12 months, Unrealized losses	0	0
12 months or more, Fair value	335	3,158
12 months or more, Unrealized losses	1	10
Total, Fair value	1,247	3,942
Total, Unrealized losses	1	10
Debt securities, available-for-sale, unrealized loss position	1,247	3,942
Debt securities, available-for-sale, unrealized loss position, accumulated loss	1	10
Other asset-backed securities (“ABS”)
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Less than 12 months, Fair value	0	0
Less than 12 months, Unrealized losses	0	0
12 months or more, Fair value	790	832
12 months or more, Unrealized losses	77	84
Total, Fair value	790	832
Total, Unrealized losses	77	84
Debt securities, available-for-sale, unrealized loss position	790	832
Debt securities, available-for-sale, unrealized loss position, accumulated loss	$ 77	$ 84

Securities - Debt Securities, H

Securities - Debt Securities, Held-to-maturity, Credit Quality Indicator (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 48,404	$ 49,578
Unrealized gain (loss)	$ (5,191)	$ (4,867)
Ratings (percent)	0%	0%
Agency residential mortgage-backed securities (“RMBS”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 28,805	$ 29,740
Unrealized gain (loss)	$ (3,789)	$ (3,492)
Ratings (percent)	0%	0%
U.S. Treasury
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 8,763	$ 9,123
Unrealized gain (loss)	$ (617)	$ (612)
Ratings (percent)	0%	0%
U.S. government agencies
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 4,144	$ 4,146
Unrealized gain (loss)	$ (414)	$ (401)
Ratings (percent)	0%	0%
Agency commercial mortgage-backed securities (“MBS”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 3,581	$ 3,411
Unrealized gain (loss)	$ (304)	$ (295)
Ratings (percent)	0%	0%
Non-U.S. Government
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 2,093	$ 2,137
Unrealized gain (loss)	$ (66)	$ (64)
Ratings (percent)	0%	0%
Collateralized loan obligations (“CLOs”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 983	$ 983
Unrealized gain (loss)	$ 0	$ (1)
Ratings (percent)	0%	0%
Non-agency RMBS
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 24	$ 26
Unrealized gain (loss)	$ 0	$ 0
Ratings (percent)	2%	2%
Other debt securities
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 11	$ 12
Unrealized gain (loss)	$ (1)	$ (2)
Ratings (percent)	100%	100%
AAA/ AA-
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	100%	100%
AAA/ AA- | Agency residential mortgage-backed securities (“RMBS”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	100%	100%
AAA/ AA- | U.S. Treasury
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	100%	100%
AAA/ AA- | U.S. government agencies
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	100%	100%
AAA/ AA- | Agency commercial mortgage-backed securities (“MBS”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	100%	100%
AAA/ AA- | Non-U.S. Government
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	100%	100%
AAA/ AA- | Collateralized loan obligations (“CLOs”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	100%	100%
AAA/ AA- | Non-agency RMBS
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	24%	25%
AAA/ AA- | Other debt securities
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0%	0%
A+/ A-
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0%	0%
A+/ A- | Agency residential mortgage-backed securities (“RMBS”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0%	0%
A+/ A- | U.S. Treasury
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0%	0%
A+/ A- | U.S. government agencies
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0%	0%
A+/ A- | Agency commercial mortgage-backed securities (“MBS”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0%	0%
A+/ A- | Non-U.S. Government
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0%	0%
A+/ A- | Collateralized loan obligations (“CLOs”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0%	0%
A+/ A- | Non-agency RMBS
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	55%	54%
A+/ A- | Other debt securities
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0%	0%
BBB+/ BBB-
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0%	0%
BBB+/ BBB- | Agency residential mortgage-backed securities (“RMBS”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0%	0%
BBB+/ BBB- | U.S. Treasury
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0%	0%
BBB+/ BBB- | U.S. government agencies
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0%	0%
BBB+/ BBB- | Agency commercial mortgage-backed securities (“MBS”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0%	0%
BBB+/ BBB- | Non-U.S. Government
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0%	0%
BBB+/ BBB- | Collateralized loan obligations (“CLOs”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0%	0%
BBB+/ BBB- | Non-agency RMBS
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	2%	2%
BBB+/ BBB- | Other debt securities
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0%	0%
BB+ and lower
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0%	0%
BB+ and lower | Agency residential mortgage-backed securities (“RMBS”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0%	0%
BB+ and lower | U.S. Treasury
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0%	0%
BB+ and lower | U.S. government agencies
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0%	0%
BB+ and lower | Agency commercial mortgage-backed securities (“MBS”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0%	0%
BB+ and lower | Non-U.S. Government
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0%	0%
BB+ and lower | Collateralized loan obligations (“CLOs”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0%	0%
BB+ and lower | Non-agency RMBS
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	17%	17%
BB+ and lower | Other debt securities
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0%	0%

Securities - Maturity Distribut

Securities - Maturity Distribution and Yield of Investment Securities Portfolio (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Securities available-for-sale, Amount:
Within 1 year	$ 9,216
1-5 years	36,251
5-10 years	6,829
After 10 years	2,207
Fair value	$ 90,505	$ 76,817
Securities available-for-sale (Yield):
Within 1 year	2.32%
1-5 years	2.65%
5-10 years	2.68%
After 10 years	2.92%
Total	3.44%
Securities held-to-maturity, Amount:
Within 1 year	$ 4,267
1-5 years	9,085
5-10 years	1,446
After 10 years	213
Available-for-sale, amount	$ 48,404	49,578
Securities held-to-maturity (Yield):
Within 1 year	1.40%
1-5 years	1.30%
5-10 years	1.31%
After 10 years	1.99%
Total	2.13%
Total securities	$ 13,483
Total securities (percent)	2.03%
Total securities	$ 45,336
Total securities (percent)	2.39%
Total securities	$ 8,275
Total securities (percent)	2.46%
Total securities	$ 2,420
Total securities (percent)	2.85%
Total securities	$ 138,909
Total securities (percent)	3%
U.S. Treasury
Securities available-for-sale, Amount:
Within 1 year	$ 3,061
1-5 years	12,520
5-10 years	2,650
After 10 years	1,957
Fair value	$ 20,188	16,604
Securities available-for-sale (Yield):
Within 1 year	1.74%
1-5 years	1.75%
5-10 years	3.06%
After 10 years	2.92%
Total	2.04%
Securities held-to-maturity, Amount:
Within 1 year	$ 2,816
1-5 years	5,137
5-10 years	810
After 10 years	0
Available-for-sale, amount	$ 8,763	9,123
Securities held-to-maturity (Yield):
Within 1 year	1.55%
1-5 years	1.21%
5-10 years	1.07%
After 10 years	0%
Total	1.30%
Non-U.S. Government
Securities available-for-sale, Amount:
Within 1 year	$ 4,826
1-5 years	16,482
5-10 years	2,868
After 10 years	141
Fair value	$ 24,317	18,382
Securities available-for-sale (Yield):
Within 1 year	2.37%
1-5 years	3%
5-10 years	2.36%
After 10 years	3.08%
Total	2.80%
Securities held-to-maturity, Amount:
Within 1 year	$ 896
1-5 years	1,121
5-10 years	76
After 10 years	0
Available-for-sale, amount	$ 2,093	2,137
Securities held-to-maturity (Yield):
Within 1 year	0.97%
1-5 years	1.29%
5-10 years	0.59%
After 10 years	0%
Total	1.13%
Foreign covered bonds
Securities available-for-sale, Amount:
Within 1 year	$ 1,279
1-5 years	5,557
5-10 years	425
After 10 years	0
Fair value	$ 7,261	6,334
Securities available-for-sale (Yield):
Within 1 year	3.55%
1-5 years	3.39%
5-10 years	2.20%
After 10 years	0%
Total	3.34%
U.S. government agencies
Securities available-for-sale, Amount:
Within 1 year	$ 50
1-5 years	1,692
5-10 years	886
After 10 years	108
Fair value	$ 2,736	2,901
Securities available-for-sale (Yield):
Within 1 year	1.51%
1-5 years	3.82%
5-10 years	2.81%
After 10 years	2.75%
Total	3.38%
Securities held-to-maturity, Amount:
Within 1 year	$ 555
1-5 years	2,827
5-10 years	549
After 10 years	213
Available-for-sale, amount	$ 4,144	4,146
Securities held-to-maturity (Yield):
Within 1 year	1.34%
1-5 years	1.46%
5-10 years	1.69%
After 10 years	1.99%
Total	1.50%
Other debt securities
Securities available-for-sale, Amount:
Within 1 year	$ 0
1-5 years	0
5-10 years	0
After 10 years	1
Fair value	$ 1	1
Securities available-for-sale (Yield):
Within 1 year	0%
1-5 years	0%
5-10 years	0%
After 10 years	4.85%
Total	4.85%
Securities held-to-maturity, Amount:
Within 1 year	$ 0
1-5 years	0
5-10 years	11
After 10 years	0
Available-for-sale, amount	$ 11	12
Securities held-to-maturity (Yield):
Within 1 year	0%
1-5 years	0%
5-10 years	4.75%
After 10 years	0%
Total	4.75%
Agency residential mortgage-backed securities (“RMBS”)
Securities available-for-sale, Amount:
Fair value	$ 16,617	13,111
Securities available-for-sale (Yield):
Total	5.13%
Securities held-to-maturity, Amount:
Available-for-sale, amount	$ 28,805	29,740
Securities held-to-maturity (Yield):
Total	2.33%
Non-agency RMBS
Securities available-for-sale, Amount:
Fair value	$ 1,703	1,740
Securities available-for-sale (Yield):
Total	4.46%
Securities held-to-maturity, Amount:
Available-for-sale, amount	$ 24	26
Securities held-to-maturity (Yield):
Total	4.42%
Agency commercial mortgage-backed securities (“MBS”)
Securities available-for-sale, Amount:
Fair value	$ 7,584	7,729
Securities available-for-sale (Yield):
Total	3.04%
Securities held-to-maturity, Amount:
Available-for-sale, amount	$ 3,581	3,411
Securities held-to-maturity (Yield):
Total	2.57%
Non-agency commercial MBS
Securities available-for-sale, Amount:
Fair value	$ 2,934	2,935
Securities available-for-sale (Yield):
Total	3.47%
Collateralized loan obligations (“CLOs”)
Securities available-for-sale, Amount:
Fair value	$ 6,265	6,137
Securities available-for-sale (Yield):
Total	6.80%
Securities held-to-maturity, Amount:
Available-for-sale, amount	$ 983	983
Securities held-to-maturity (Yield):
Total	6.72%
Other asset-backed securities (“ABS”)
Securities available-for-sale, Amount:
Fair value	$ 899	$ 943
Securities available-for-sale (Yield):
Total	2.42%

Securities - Pledged assets (De

Securities - Pledged assets (Details) - USD ($) $ in Millions		Mar. 31, 2024	Dec. 31, 2023
Pledged Assets [Line Items]
Total assets	[1]	$ 434,728	$ 409,877
Securities		138,909	126,395
Loans		73,615	66,879
Trading assets		10,078	10,058
Interest-bearing deposits with banks		10,636	12,139
Pledged assets permitted to be sold or repledged		217,000	212,000
Market value of securities received as collateral that have been sold or repledged		197,000	180,000
Cash segregated under federal or other regulations		2,000	3,000
Securities segregated under federal or other regulations		5,000	3,000
Asset Pledged as Collateral
Pledged Assets [Line Items]
Total assets		145,000	134,000
Securities		127,000	116,000
Loans		13,000	13,000
Trading assets		4,000	4,000
Interest-bearing deposits with banks		1,000	1,000
Financial instruments, owned, at fair value		26,000	24,000
Asset Pledged as Collateral | Federal Home Loan Bank Advances
Pledged Assets [Line Items]
Total assets		9,000	9,000
Asset Pledged as Collateral | Federal Reserve Discount Window Borrowings
Pledged Assets [Line Items]
Total assets		$ 96,000	$ 93,000
[1]Prior period balances were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.

Loans and asset quality - Loan

Loans and asset quality - Loan Distribution and Industry Concentrations (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 73,615	$ 66,879
Unearned income on lease financings	258	268
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,463	2,112
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	6,997	6,760
Financial institutions
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	12,059	10,521
Lease financings
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	599	599
Wealth management loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	9,028	9,109
Wealth management mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	9,088	9,131
Other residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,147	1,166
Capital call financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	3,987	3,700
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,723	2,717
Overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	7,947	3,053
Margin loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 17,577	$ 18,011

Loans and asset quality - Allow

Loans and asset quality - Allowance for Credit Losses Activity (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 390	$ 296	$ 254
Charge-offs	(1)	0	0
Recoveries	0	5	1
Net (charge-offs)	(1)	5	1
Provision	14	89	(2)
Ending balance	403	390	253
Allowance for loan losses	322	303	170
Allowance for lending-related commitments	81	87	83
Individually evaluated for impairment:
Loan balance	348	303	68
Allowance for loan losses	107	76	0
Provision for other credit losses	13	(5)	29
Fair value of collateral	303	348	103
Asset Pledged as Collateral
Individually evaluated for impairment:
Loan balance	348	303	68
Commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	27	32	18
Charge-offs	0	0	0
Recoveries	0	0	1
Net (charge-offs)	0	0	1
Provision	(3)	(5)	2
Ending balance	24	27	21
Allowance for loan losses	14	12	4
Allowance for lending-related commitments	10	15	17
Individually evaluated for impairment:
Loan balance	0	0	0
Allowance for loan losses	0	0	0
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	325	222	184
Charge-offs	0	0	0
Recoveries	0	0	0
Net (charge-offs)	0	0	0
Provision	22	103	(7)
Ending balance	347	325	177
Allowance for loan losses	287	266	130
Allowance for lending-related commitments	60	59	47
Individually evaluated for impairment:
Loan balance	331	290	54
Allowance for loan losses	107	76	0
Financial institutions
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	19	22	24
Charge-offs	0	0	0
Recoveries	0	0	0
Net (charge-offs)	0	0	0
Provision	(2)	(3)	0
Ending balance	17	19	24
Allowance for loan losses	8	9	8
Allowance for lending-related commitments	9	10	16
Individually evaluated for impairment:
Loan balance	0	0	0
Allowance for loan losses	0	0	0
Lease financings
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	1	1	1
Charge-offs	0	0	0
Recoveries	0	0	0
Net (charge-offs)	0	0	0
Provision	(1)	0	0
Ending balance	0	1	1
Allowance for loan losses	0	1	1
Allowance for lending-related commitments	0	0	0
Individually evaluated for impairment:
Loan balance	0	0	0
Allowance for loan losses	0	0	0
Wealth management loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	1	1	1
Charge-offs	0	0	0
Recoveries	0	0	0
Net (charge-offs)	0	0	0
Provision	0	0	0
Ending balance	1	1	1
Allowance for loan losses	1	1	1
Allowance for lending-related commitments	0	0	0
Individually evaluated for impairment:
Loan balance	0	0	0
Allowance for loan losses	0	0	0
Wealth management mortgages
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	9	9	12
Charge-offs	(1)	0	0
Recoveries	0	0	0
Net (charge-offs)	(1)	0	0
Provision	(1)	0	2
Ending balance	7	9	14
Allowance for loan losses	6	8	13
Allowance for lending-related commitments	1	1	1
Individually evaluated for impairment:
Loan balance	16	12	13
Allowance for loan losses	0	0	0
Other residential mortgages
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	4	6	8
Charge-offs	0	0	0
Recoveries	0	0	0
Net (charge-offs)	0	0	0
Provision	(1)	(2)	1
Ending balance	3	4	9
Allowance for loan losses	3	4	9
Allowance for lending-related commitments	0	0	0
Individually evaluated for impairment:
Loan balance	1	1	1
Allowance for loan losses	0	0	0
Capital call financing
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	4	3	6
Charge-offs	0	0	0
Recoveries	0	0	0
Net (charge-offs)	0	0	0
Provision	0	1	0
Ending balance	4	4	6
Allowance for loan losses	3	2	4
Allowance for lending-related commitments	1	2	2
Individually evaluated for impairment:
Loan balance	0	0	0
Allowance for loan losses	0	0	$ 0
Other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 0	0
Charge-offs		0
Recoveries		5
Net (charge-offs)		5
Provision		(5)
Ending balance		0
Allowance for loan losses		0
Allowance for lending-related commitments		0
Individually evaluated for impairment:
Loan balance		0
Allowance for loan losses		$ 0

Loans and asset quality - Nonpe

Loans and asset quality - Nonperforming Assets (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Nonperforming Assets [Line Items]
With an allowance	$ 259	$ 219
Without an allowance	17	13
Total nonperforming loans	276	232
With an allowance, Other assets owned	0	0
Without an allowance, Other assets owned	2	5
Other assets owned	2	5
With an allowance, Total nonperforming assets	259	219
Without an allowance, Total nonperforming assets	19	18
Total nonperforming assets	278	237
Commercial real estate
Nonperforming Assets [Line Items]
With an allowance	230	189
Without an allowance	0	0
Total nonperforming loans	230	189
Other residential mortgages
Nonperforming Assets [Line Items]
With an allowance	22	23
Without an allowance	1	1
Total nonperforming loans	23	24
Wealth management mortgages
Nonperforming Assets [Line Items]
With an allowance	7	7
Without an allowance	16	12
Total nonperforming loans	$ 23	$ 19

Loans and asset quality - Infor

Loans and asset quality - Information about Past Due Loans (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Past Due [Line Items]
Total past due loans	$ 73,615	$ 66,879
Total past due
Financing Receivable, Past Due [Line Items]
Total past due loans	573	440
Total past due | Financial institutions
Financing Receivable, Past Due [Line Items]
Total past due loans	455	339
Total past due | Wealth management loans
Financing Receivable, Past Due [Line Items]
Total past due loans	50	52
Total past due | Wealth management mortgages
Financing Receivable, Past Due [Line Items]
Total past due loans	48	29
Total past due | Commercial real estate
Financing Receivable, Past Due [Line Items]
Total past due loans	3	12
Total past due | Other residential mortgages
Financing Receivable, Past Due [Line Items]
Total past due loans	17	8
30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total past due loans	568	433
30 to 59 Days Past Due | Financial institutions
Financing Receivable, Past Due [Line Items]
Total past due loans	455	339
30 to 59 Days Past Due | Wealth management loans
Financing Receivable, Past Due [Line Items]
Total past due loans	50	52
30 to 59 Days Past Due | Wealth management mortgages
Financing Receivable, Past Due [Line Items]
Total past due loans	48	26
30 to 59 Days Past Due | Commercial real estate
Financing Receivable, Past Due [Line Items]
Total past due loans	3	9
30 to 59 Days Past Due | Other residential mortgages
Financing Receivable, Past Due [Line Items]
Total past due loans	12	7
60 to 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total past due loans	5	7
60 to 89 Days Past Due | Financial institutions
Financing Receivable, Past Due [Line Items]
Total past due loans	0	0
60 to 89 Days Past Due | Wealth management loans
Financing Receivable, Past Due [Line Items]
Total past due loans	0	0
60 to 89 Days Past Due | Wealth management mortgages
Financing Receivable, Past Due [Line Items]
Total past due loans	0	3
60 to 89 Days Past Due | Commercial real estate
Financing Receivable, Past Due [Line Items]
Total past due loans	0	3
60 to 89 Days Past Due | Other residential mortgages
Financing Receivable, Past Due [Line Items]
Total past due loans	5	1
Equal to Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total past due loans	0	0
Equal to Greater than 90 Days Past Due | Financial institutions
Financing Receivable, Past Due [Line Items]
Total past due loans	0	0
Equal to Greater than 90 Days Past Due | Wealth management loans
Financing Receivable, Past Due [Line Items]
Total past due loans	0	0
Equal to Greater than 90 Days Past Due | Wealth management mortgages
Financing Receivable, Past Due [Line Items]
Total past due loans	0	0
Equal to Greater than 90 Days Past Due | Commercial real estate
Financing Receivable, Past Due [Line Items]
Total past due loans	0	0
Equal to Greater than 90 Days Past Due | Other residential mortgages
Financing Receivable, Past Due [Line Items]
Total past due loans	$ 0	$ 0

Loans and asset quality - Loa_2

Loans and asset quality - Loan Modifications (Details) $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($) loan	Dec. 31, 2023 USD ($) loan	Mar. 31, 2023 USD ($) loan
Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans modified | loan	1		1
Financing receivable modifications post modification recorded investment	$ 59		$ 12
Commercial real estate | Lending-related commitments
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable modifications post modification recorded investment	$ 15
Other residential mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of loans modified | loan	1	3
Financing receivable modifications post modification recorded investment	$ 1	$ 2

Loans and asset quality - Credi

Loans and asset quality - Credit Risk Profile by Grade (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]
Originated, at amortized cost, current fiscal year	$ 8,374	$ 12,281
Originated, at amortized cost, fiscal year before current fiscal year	2,436	4,047
Originated, at amortized cost, two years before current fiscal year	3,919	3,085
Originated, at amortized cost, three years before current fiscal year	3,398	1,129
Originated, at amortized cost, four years before current fiscal year	1,861	1,068
Originated, at amortized cost, more than five years before current fiscal year	7,002	4,853
Amortized cost	38,556	37,240
Converted to term loans – Amortized cost	122	123
Total	65,668	63,826
Accrued interest receivable	310	300
Loans	73,615	66,879
Total wealth management loans
Financing Receivable, Credit Quality Indicator [Line Items]
Originated, at amortized cost, current fiscal year	4	39
Originated, at amortized cost, fiscal year before current fiscal year	30	32
Originated, at amortized cost, two years before current fiscal year	31	110
Originated, at amortized cost, three years before current fiscal year	109	26
Originated, at amortized cost, four years before current fiscal year	26	7
Originated, at amortized cost, more than five years before current fiscal year	163	167
Amortized cost	8,565	8,627
Converted to term loans – Amortized cost	100	101
Total	9,028	9,109
Accrued interest receivable	59	57
Total wealth management loans | Wealth management mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Originated, at amortized cost, current fiscal year	107	850
Originated, at amortized cost, fiscal year before current fiscal year	841	1,689
Originated, at amortized cost, two years before current fiscal year	1,658	1,909
Originated, at amortized cost, three years before current fiscal year	1,901	863
Originated, at amortized cost, four years before current fiscal year	855	736
Originated, at amortized cost, more than five years before current fiscal year	3,705	3,066
Amortized cost	21	18
Converted to term loans – Amortized cost	0	0
Total	9,088	9,131
Accrued interest receivable	24	22
Other residential mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Originated, at amortized cost, current fiscal year	0	184
Originated, at amortized cost, fiscal year before current fiscal year	179	561
Originated, at amortized cost, two years before current fiscal year	555	200
Originated, at amortized cost, three years before current fiscal year	199	5
Originated, at amortized cost, four years before current fiscal year	5	0
Originated, at amortized cost, more than five years before current fiscal year	209	216
Amortized cost	0	0
Converted to term loans – Amortized cost	0	0
Total	1,147	1,166
Accrued interest receivable	4	5
Capital call financing
Financing Receivable, Credit Quality Indicator [Line Items]
Originated, at amortized cost, current fiscal year	0	10
Originated, at amortized cost, fiscal year before current fiscal year	10	0
Originated, at amortized cost, two years before current fiscal year	0	0
Originated, at amortized cost, three years before current fiscal year	0	0
Originated, at amortized cost, four years before current fiscal year	0	0
Originated, at amortized cost, more than five years before current fiscal year	0	0
Amortized cost	3,977	3,690
Converted to term loans – Amortized cost	0	0
Total	3,987	3,700
Accrued interest receivable	17	15
Loans	3,987	3,700
Other
Financing Receivable, Credit Quality Indicator [Line Items]
Originated, at amortized cost, current fiscal year	0	0
Originated, at amortized cost, fiscal year before current fiscal year	0	0
Originated, at amortized cost, two years before current fiscal year	0	0
Originated, at amortized cost, three years before current fiscal year	0	0
Originated, at amortized cost, four years before current fiscal year	0	0
Originated, at amortized cost, more than five years before current fiscal year	0	0
Amortized cost	2,723	2,717
Converted to term loans – Amortized cost	0	0
Total	2,723	2,717
Accrued interest receivable	7	7
Loans	2,723	2,717
Margin loans
Financing Receivable, Credit Quality Indicator [Line Items]
Originated, at amortized cost, current fiscal year	7,830	7,283
Originated, at amortized cost, fiscal year before current fiscal year	0	0
Originated, at amortized cost, two years before current fiscal year	0	0
Originated, at amortized cost, three years before current fiscal year	0	0
Originated, at amortized cost, four years before current fiscal year	0	0
Originated, at amortized cost, more than five years before current fiscal year	0	0
Amortized cost	9,747	10,728
Converted to term loans – Amortized cost	0	0
Total	17,577	18,011
Accrued interest receivable	39	41
Loans	17,577	18,011
Overdrafts
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	$ 7,947	$ 3,053
Overdraft repayment period	2 days	2 days
Overdrafts | Overdrafts
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	$ 7,947	$ 3,053
Other residential mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,147	1,166
Writeoff	1	3
Investment grade | Total wealth management loans | Loans receivable
Financing Receivable, Credit Quality Indicator [Line Items]
Originated, at amortized cost, current fiscal year	4	39
Originated, at amortized cost, fiscal year before current fiscal year	30	30
Originated, at amortized cost, two years before current fiscal year	31	110
Originated, at amortized cost, three years before current fiscal year	109	26
Originated, at amortized cost, four years before current fiscal year	26	7
Originated, at amortized cost, more than five years before current fiscal year	163	167
Amortized cost	8,487	8,542
Converted to term loans – Amortized cost	100	101
Total	8,950	9,022
Non-investment grade | Total wealth management loans | Loans receivable
Financing Receivable, Credit Quality Indicator [Line Items]
Originated, at amortized cost, current fiscal year	0	0
Originated, at amortized cost, fiscal year before current fiscal year	0	2
Originated, at amortized cost, two years before current fiscal year	0	0
Originated, at amortized cost, three years before current fiscal year	0	0
Originated, at amortized cost, four years before current fiscal year	0	0
Originated, at amortized cost, more than five years before current fiscal year	0	0
Amortized cost	78	85
Converted to term loans – Amortized cost	0	0
Total	78	87
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Originated, at amortized cost, current fiscal year	18	245
Originated, at amortized cost, fiscal year before current fiscal year	140	132
Originated, at amortized cost, two years before current fiscal year	56	70
Originated, at amortized cost, three years before current fiscal year	88	0
Originated, at amortized cost, four years before current fiscal year	0	0
Originated, at amortized cost, more than five years before current fiscal year	116	45
Amortized cost	2,045	1,620
Converted to term loans – Amortized cost	0	0
Total	2,463	2,112
Accrued interest receivable	3	3
Commercial | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Originated, at amortized cost, current fiscal year	16	193
Originated, at amortized cost, fiscal year before current fiscal year	140	114
Originated, at amortized cost, two years before current fiscal year	56	70
Originated, at amortized cost, three years before current fiscal year	64	0
Originated, at amortized cost, four years before current fiscal year	0	0
Originated, at amortized cost, more than five years before current fiscal year	116	45
Amortized cost	1,980	1,483
Converted to term loans – Amortized cost	0	0
Total	2,372	1,905
Commercial | Non-investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Originated, at amortized cost, current fiscal year	2	52
Originated, at amortized cost, fiscal year before current fiscal year	0	18
Originated, at amortized cost, two years before current fiscal year	0	0
Originated, at amortized cost, three years before current fiscal year	24	0
Originated, at amortized cost, four years before current fiscal year	0	0
Originated, at amortized cost, more than five years before current fiscal year	0	0
Amortized cost	65	137
Converted to term loans – Amortized cost	0	0
Total	91	207
Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Originated, at amortized cost, current fiscal year	186	2,690
Originated, at amortized cost, fiscal year before current fiscal year	792	1,549
Originated, at amortized cost, two years before current fiscal year	1,585	739
Originated, at amortized cost, three years before current fiscal year	979	195
Originated, at amortized cost, four years before current fiscal year	865	318
Originated, at amortized cost, more than five years before current fiscal year	2,252	1,027
Amortized cost	316	220
Converted to term loans – Amortized cost	22	22
Total	6,997	6,760
Accrued interest receivable	33	30
Commercial real estate | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Originated, at amortized cost, current fiscal year	185	1,518
Originated, at amortized cost, fiscal year before current fiscal year	555	864
Originated, at amortized cost, two years before current fiscal year	739	585
Originated, at amortized cost, three years before current fiscal year	640	152
Originated, at amortized cost, four years before current fiscal year	558	271
Originated, at amortized cost, more than five years before current fiscal year	1,759	875
Amortized cost	226	136
Converted to term loans – Amortized cost	22	22
Total	4,684	4,423
Commercial real estate | Non-investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Originated, at amortized cost, current fiscal year	1	1,172
Originated, at amortized cost, fiscal year before current fiscal year	237	685
Originated, at amortized cost, two years before current fiscal year	846	154
Originated, at amortized cost, three years before current fiscal year	339	43
Originated, at amortized cost, four years before current fiscal year	307	47
Originated, at amortized cost, more than five years before current fiscal year	493	152
Amortized cost	90	84
Converted to term loans – Amortized cost	0	0
Total	2,313	2,337
Financial institutions
Financing Receivable, Credit Quality Indicator [Line Items]
Originated, at amortized cost, current fiscal year	229	750
Originated, at amortized cost, fiscal year before current fiscal year	444	84
Originated, at amortized cost, two years before current fiscal year	34	57
Originated, at amortized cost, three years before current fiscal year	110	0
Originated, at amortized cost, four years before current fiscal year	72	0
Originated, at amortized cost, more than five years before current fiscal year	8	10
Amortized cost	11,162	9,620
Converted to term loans – Amortized cost	0	0
Total	12,059	10,521
Accrued interest receivable	124	120
Financial institutions | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Originated, at amortized cost, current fiscal year	184	616
Originated, at amortized cost, fiscal year before current fiscal year	424	74
Originated, at amortized cost, two years before current fiscal year	24	57
Originated, at amortized cost, three years before current fiscal year	110	0
Originated, at amortized cost, four years before current fiscal year	72	0
Originated, at amortized cost, more than five years before current fiscal year	8	10
Amortized cost	10,142	6,948
Converted to term loans – Amortized cost	0	0
Total	10,964	7,705
Financial institutions | Non-investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
Originated, at amortized cost, current fiscal year	45	134
Originated, at amortized cost, fiscal year before current fiscal year	20	10
Originated, at amortized cost, two years before current fiscal year	10	0
Originated, at amortized cost, three years before current fiscal year	0	0
Originated, at amortized cost, four years before current fiscal year	0	0
Originated, at amortized cost, more than five years before current fiscal year	0	0
Amortized cost	1,020	2,672
Converted to term loans – Amortized cost	0	0
Total	1,095	2,816
Lease financings
Financing Receivable, Credit Quality Indicator [Line Items]
Originated, at amortized cost, current fiscal year	0	230
Originated, at amortized cost, fiscal year before current fiscal year	0	0
Originated, at amortized cost, two years before current fiscal year	0	0
Originated, at amortized cost, three years before current fiscal year	12	40
Originated, at amortized cost, four years before current fiscal year	38	7
Originated, at amortized cost, more than five years before current fiscal year	549	322
Amortized cost	0	0
Converted to term loans – Amortized cost	0	0
Total	599	599
Accrued interest receivable	$ 0	$ 0

Loans and asset quality - Cre_2

Loans and asset quality - Credit Risk Indicators Narrative (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of exposure to investment grade securities	97%
Percentage of financial institution exposure secured	66%
Percent of financial institution exposure expiring within one year	84%
Loans	$ 73,615,000,000	$ 66,879,000,000
Reverse repurchase agreements, allowance for credit loss	$ 0	0
Wealth management mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan to value ratio at origination (percent)	61%
Loans	$ 9,088,000,000	9,131,000,000
Wealth management mortgages | California | Geographic Concentration Risk | Revenue Benchmark
Accounts, Notes, Loans and Financing Receivable [Line Items]
Geographic concentrations (percent)	21%
Wealth management mortgages | New York | Geographic Concentration Risk | Revenue Benchmark
Accounts, Notes, Loans and Financing Receivable [Line Items]
Geographic concentrations (percent)	14%
Wealth management mortgages | Florida | Geographic Concentration Risk | Revenue Benchmark
Accounts, Notes, Loans and Financing Receivable [Line Items]
Geographic concentrations (percent)	11%
Wealth management mortgages | Massachusetts | Geographic Concentration Risk | Revenue Benchmark
Accounts, Notes, Loans and Financing Receivable [Line Items]
Geographic concentrations (percent)	8%
Wealth management mortgages | Other | Geographic Concentration Risk | Revenue Benchmark
Accounts, Notes, Loans and Financing Receivable [Line Items]
Geographic concentrations (percent)	46%
Total wealth management loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of past due mortgages (less than)	1%
Other residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 1,147,000,000	1,166,000,000
Margin loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 17,577,000,000	18,011,000,000
Minimum collateral margin	1
Overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 7,900,000,000
Overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 7,947,000,000	$ 3,053,000,000
Overdraft repayment period	2 days	2 days

Goodwill and intangible asset_2

Goodwill and intangible assets - Goodwill (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Goodwill [Roll Forward]
Beginning balance	$ 16,261,000,000	$ 16,150,000,000
Business realignment	0
Foreign currency translation	(33,000,000)	42,000,000
Goodwill	16,908,000,000	16,872,000,000	$ 16,941,000,000	$ 16,830,000,000
Accumulated impairment losses	(680,000,000)	(680,000,000)	(680,000,000)	(680,000,000)
Ending balance	16,228,000,000	16,192,000,000
Securities Services
Goodwill [Roll Forward]
Beginning balance	7,004,000,000	6,973,000,000
Business realignment	(51,000,000)
Foreign currency translation	(18,000,000)	12,000,000
Goodwill	6,935,000,000	6,985,000,000	7,004,000,000	6,973,000,000
Accumulated impairment losses	0	0	0	0
Ending balance	6,935,000,000	6,985,000,000
Market and Wealth Services
Goodwill [Roll Forward]
Beginning balance	1,429,000,000	1,424,000,000
Business realignment	48,000,000
Foreign currency translation	(1,000,000)	2,000,000
Goodwill	1,476,000,000	1,426,000,000	1,429,000,000	1,424,000,000
Accumulated impairment losses	0	0	0	0
Ending balance	1,476,000,000	1,426,000,000
Investment and Wealth Management
Goodwill [Roll Forward]
Beginning balance	7,828,000,000	7,753,000,000
Business realignment	3,000,000
Foreign currency translation	(14,000,000)	28,000,000
Goodwill	8,497,000,000	8,461,000,000	8,508,000,000	8,433,000,000
Accumulated impairment losses	(680,000,000)	(680,000,000)	$ (680,000,000)	$ (680,000,000)
Ending balance	7,817,000,000	$ 7,781,000,000
Allocated goodwill	6,100,000,000
Goodwill impairment	$ 0

Goodwill and intangible asset_3

Goodwill and intangible assets - Intangible Assets by Business Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Intangible Assets [Roll Forward]
Beginning Balance	$ 2,854		$ 2,901
Amortization	(12)	$ (14)	(14)
Foreign currency translation	(3)		3
Ending Balance	2,839	2,854	2,890
Securities Services | Operating segments
Intangible Assets [Roll Forward]
Beginning Balance	164		193
Amortization	(7)		(8)
Foreign currency translation	(1)		0
Ending Balance	156	164	185
Market and Wealth Services | Operating segments
Intangible Assets [Roll Forward]
Beginning Balance	378		384
Amortization	(1)		(1)
Foreign currency translation	0		0
Ending Balance	377	378	383
Investment and Wealth Management | Operating segments
Intangible Assets [Roll Forward]
Beginning Balance	1,463		1,475
Amortization	(4)		(5)
Foreign currency translation	(2)		3
Ending Balance	1,457	1,463	1,473
Other | Operating segments
Intangible Assets [Roll Forward]
Beginning Balance	849		849
Amortization	0		0
Foreign currency translation	0		0
Ending Balance	$ 849	$ 849	$ 849

Goodwill and intangible asset_4

Goodwill and intangible assets - Intangible Assets by Type (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Intangible Assets by Major Class [Line Items]
Gross carrying amount	$ 4,182	$ 4,185
Accumulated amortization	(1,343)	(1,331)
Net carrying amount	2,839	2,854	$ 2,890	$ 2,901
Finite-lived Intangible Assets
Intangible Assets by Major Class [Line Items]
Gross carrying amount	1,603	1,605
Accumulated amortization	(1,343)	(1,331)
Net carrying amount	$ 260	274
Finite-lived Intangible Assets | Weighted Average
Intangible Assets by Major Class [Line Items]
Remaining weighted- average amortization period	9 years
Finite-lived Intangible Assets | Customer contracts—Investment Services | Securities Services
Intangible Assets by Major Class [Line Items]
Gross carrying amount	$ 729	731
Accumulated amortization	(573)	(567)
Net carrying amount	156	164
Finite-lived Intangible Assets | Customer contracts—Investment Services | Market and Wealth Services
Intangible Assets by Major Class [Line Items]
Gross carrying amount	280	280
Accumulated amortization	(274)	(273)
Net carrying amount	$ 6	7
Finite-lived Intangible Assets | Customer contracts—Investment Services | Weighted Average | Securities Services
Intangible Assets by Major Class [Line Items]
Remaining weighted- average amortization period	10 years
Finite-lived Intangible Assets | Customer contracts—Investment Services | Weighted Average | Market and Wealth Services
Intangible Assets by Major Class [Line Items]
Remaining weighted- average amortization period	2 years
Finite-lived Intangible Assets | Customer relationships
Intangible Assets by Major Class [Line Items]
Gross carrying amount	$ 553	553
Accumulated amortization	(484)	(479)
Net carrying amount	$ 69	74
Finite-lived Intangible Assets | Customer relationships | Weighted Average
Intangible Assets by Major Class [Line Items]
Remaining weighted- average amortization period	8 years
Finite-lived Intangible Assets | Other
Intangible Assets by Major Class [Line Items]
Gross carrying amount	$ 41	41
Accumulated amortization	(12)	(12)
Net carrying amount	$ 29	29
Finite-lived Intangible Assets | Other | Weighted Average
Intangible Assets by Major Class [Line Items]
Remaining weighted- average amortization period	13 years
Indefinite-lived Intangible Assets
Intangible Assets by Major Class [Line Items]
Gross carrying amount	$ 2,579	2,580
Net carrying amount	2,579	2,580
Indefinite-lived Intangible Assets | Tradenames
Intangible Assets by Major Class [Line Items]
Gross carrying amount	1,292	1,292
Net carrying amount	1,292	1,292
Indefinite-lived Intangible Assets | Customer relationships
Intangible Assets by Major Class [Line Items]
Gross carrying amount	1,287	1,288
Net carrying amount	$ 1,287	$ 1,288

Goodwill and intangible asset_5

Goodwill and intangible assets - Estimated Annual Amortization Expense (Details) $ in Millions	Mar. 31, 2024 USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2024	$ 49
2025	43
2026	34
2027	28
2028	$ 24

Other assets - Components of Ot

Other assets - Components of Other Assets (Details) - USD ($) $ in Millions		Mar. 31, 2024	Dec. 31, 2023
Other Assets [Abstract]
Corporate/bank-owned life insurance		$ 5,498	$ 5,480
Accounts receivable		4,347	6,567
Software		2,455	2,430
Fails to deliver		2,281	1,514
Tax credit investments		2,130	2,186
Prepaid pension assets		1,984	1,818
Equity method investments		888	873
Other equity investments		763	741
Prepaid expense		754	737
Assets of consolidated investment management funds		568	526
Federal Reserve Bank stock		482	480
Fair value of hedging derivatives		384	236
Seed capital		207	232
Cash collateral receivable on derivative transactions		187	621
Income taxes receivable		165	270
Other		1,010	1,198
Total other assets	[1]	24,103	25,909
Federal Home Loan Bank stock, at cost		$ 7	$ 7
[1]Prior period balances were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.

Other assets - Non-Readily Mark

Other assets - Non-Readily Marketable Equity Securities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Other Assets [Abstract]
Equity securities without readily determinable fair value, amount	$ 494	$ 479
Equity securities without readily determinable fair value, upward price adjustment, annual amount	0	47	$ 0
Equity securities without readily determinable fair value, downward price adjustment, annual amount	0	(1)	(18)
Equity securities without readily determinable fair value, net adjustment, annual amount	0	$ 46	$ (18)
Equity securities without readily determinable fair value, upward price adjustment, cumulative amount	335
Equity securities without readily determinable fair value, downward price adjustment, cumulative amount	(53)
Equity securities without readily determinable fair value, net price adjustment, cumulative amount	$ 282

Other assets - Tax Credit Inves

Other assets - Tax Credit Investments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Other Assets [Abstract]
Tax credit investments	$ 2,130	$ 2,186
Tax credit investments, commitment	777	780
Tax credit investments, commitment - remainder of 2024	283
Tax credit investments, commitment - 2025	227
Tax credit investments, commitment - 2026	92
Tax credit investments, commitment - 2027	44
Tax credit investments, commitment - 2028	16
Tax credit investments, commitment - 2029 and thereafter	115
Tax credits and other benefits	114	97	$ 90
Amortization expense included in the provision for income taxes	$ 92	$ 74	$ 73

Other assets - Seed Capital and

Other assets - Seed Capital and Private Equity Investments (Details) - Other Assets - NAV - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Line Items]
Fair value	$ 166	$ 153
Unfunded commitments	41	42
Seed capital
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Line Items]
Fair value	7	3
Unfunded commitments	$ 0	$ 0
Fair value, investments, entities that calculate net asset value per share, liquidating investment, remaining period	7 days	7 days
Private equity investments
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Line Items]
Fair value	$ 152	$ 143
Unfunded commitments	$ 41	42
Fair value, investments, entities that calculate net asset value per share, liquidating investment, remaining period	10 years
Other
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Line Items]
Fair value	$ 7	7
Unfunded commitments	$ 0	$ 0

Contract revenue - Disaggregati

Contract revenue - Disaggregation of Contract Revenues (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Total fee and other revenue	[1]	$ 3,487	$ 3,257	$ 3,287
Net income (loss) attributable to noncontrolling interests		2	(2)	0
Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		3,127	3,056	2,975
Fee and other revenue - not in scope of ASC 606		358	203	312
Total fee and other revenue		3,485	3,259	3,287
Investment services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		2,262	2,231	2,110
Investment management and performance fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		772	743	783
Financing-related fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		23	10	18
Distribution and servicing | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		42	42	33
Investment and other income | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		28	30	31
Securities Services | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		1,333	1,319	1,242
Fee and other revenue - not in scope of ASC 606		223	225	201
Total fee and other revenue		1,556	1,544	1,443
Securities Services | Investment services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		1,260	1,251	1,169
Securities Services | Investment management and performance fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		0	0	0
Securities Services | Financing-related fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		15	7	13
Securities Services | Distribution and servicing | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		1	3	0
Securities Services | Investment and other income | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		57	58	60
Market and Wealth Services | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		1,033	1,003	966
Fee and other revenue - not in scope of ASC 606		61	57	52
Total fee and other revenue		1,094	1,060	1,018
Market and Wealth Services | Investment services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		992	970	932
Market and Wealth Services | Investment management and performance fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		2	2	2
Market and Wealth Services | Financing-related fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		8	3	5
Market and Wealth Services | Distribution and servicing | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		(29)	(27)	(23)
Market and Wealth Services | Investment and other income | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		60	55	50
Investment and Wealth Management | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		780	753	783
Fee and other revenue - not in scope of ASC 606		25	(119)	2
Total fee and other revenue		805	634	785
Net income (loss) attributable to noncontrolling interests		2	(2)	0
Investment and Wealth Management | Investment services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		26	25	24
Investment and Wealth Management | Investment management and performance fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		774	744	784
Investment and Wealth Management | Financing-related fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		0	1	0
Investment and Wealth Management | Distribution and servicing | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		70	66	55
Investment and Wealth Management | Investment and other income | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		(90)	(83)	(80)
Other | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		(19)	(19)	(16)
Fee and other revenue - not in scope of ASC 606		49	40	57
Total fee and other revenue		30	21	41
Other | Investment services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		(16)	(15)	(15)
Other | Investment management and performance fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		(4)	(3)	(3)
Other | Financing-related fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		0	(1)	0
Other | Distribution and servicing | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		0	0	1
Other | Investment and other income | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue and other revenue - contract revenue		$ 1	$ 0	$ 1
[1]Prior periods were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information

Contract revenue - Narrative (D

Contract revenue - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Capitalized Contract Cost [Line Items]
Contract with customer, asset	$ 2,600	$ 2,600
Contract assets representing accrued revenues not yet billed	48	27
Contract with customer, liability	204	172
Contract with customer, liability, revenue recognized	55
Incremental costs for obtaining contracts
Capitalized Contract Cost [Line Items]
Capitalized contract costs	52	46
Capitalized contract cost, amortization	3	4	$ 4
Costs to fulfill contract
Capitalized Contract Cost [Line Items]
Capitalized contract costs	$ 91	$ 90

Net interest income (Details)

Net interest income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Interest income
Deposits with the Federal Reserve and other central banks	$ 1,219	$ 1,294	$ 853
Deposits with banks	121	130	140
Federal funds sold and securities purchased under resale agreements	2,433	2,308	991
Loans	1,061	1,064	866
Securities:
Taxable	1,193	1,080	1,022
Exempt from federal income taxes	0	0	0
Total securities	1,193	1,080	1,022
Trading securities	69	87	70
Total interest income	6,096	5,963	3,942
Interest expense
Deposits	2,187	2,108	1,366
Federal funds purchased and securities sold under repurchase agreements	2,243	2,122	892
Trading liabilities	21	35	30
Other borrowed funds	4	6	3
Customer payables	146	148	128
Long-term debt	455	443	395
Total interest expense	5,056	4,862	2,814
Net interest income	1,040	1,101	1,128
Provision for credit losses	27	84	27
Net interest income after provision for credit losses	$ 1,013	$ 1,017	$ 1,101

Employee benefit plans (Details

Employee benefit plans (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Health care benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0
Interest cost	1	1
Expected return on assets	(2)	(2)
Other	(2)	(3)
Net periodic benefit (credit) cost	(3)	(4)
Domestic | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0
Interest cost	45	48
Expected return on assets	(95)	(95)
Other	6	2
Net periodic benefit (credit) cost	(44)	(45)
Foreign | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	3	3
Interest cost	10	8
Expected return on assets	(20)	(22)
Other	(1)	(3)
Net periodic benefit (credit) cost	$ (8)	$ (14)

Income taxes - Narrative (Detai

Income taxes - Narrative (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Income Tax Disclosure [Abstract]
Provision for income taxes	[1]	$ 297	$ 73	$ 306
Effective tax rate		22.40%	26.20%	23.80%
Tax reserves		$ 105	$ 109
Impact on effective tax rate if tax reserves were unnecessary		105
Accrued interest, related to income taxes in the balance sheet		33
Additional tax benefit (expense) related to interest		5		$ 1
Reasonably possible decrease in uncertain tax positions within the next 12 months, if a re-evaluation is required		$ 10
[1]Prior periods were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information

Variable interest entities - As

Variable interest entities - Assets and Liabilities of VIEs (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Variable Interest Entity [Line Items]
Trading assets	$ 10,078	$ 10,058
Other assets	1,437	1,261
Other liabilities	70	195
Nonredeemable noncontrolling interests	111	50
VME classification of carrying amount, assets	51	91
VME classification of carrying amount, liabilities	1	1
Noncontrolling interest in VME	3	12
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Trading assets	547	510
Other assets	21	16
Total assets	568	526
Other liabilities	5	1
Total liabilities	5	1
Nonredeemable noncontrolling interests	$ 111	$ 50

Variable interest entities - No

Variable interest entities - Non-consolidated VIEs (Details) - USD ($) $ in Millions		Mar. 31, 2024	Dec. 31, 2023
Variable Interest Entity [Line Items]
Other assets	[1]	$ 434,728	$ 409,877
Other liabilities	[1]	393,966	368,972
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Other assets		2,212	2,261
Other liabilities		777	780
Maximum loss exposure		$ 2,990	$ 3,041
[1]Prior period balances were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information.

Preferred stock - Narrative (De

Preferred stock - Narrative (Details)	Mar. 31, 2024 $ / shares shares	Dec. 31, 2023 $ / shares shares
Stockholders' Equity Note [Abstract]
Preferred stock, shares authorized (shares) | shares	100,000,000	100,000,000
Preferred stock, par value (usd per share) | $ / shares	$ 0.01	$ 0.01
Preferred stock, percentage ownership by subsidiary	1

Preferred stock - Summary (Deta

Preferred stock - Summary (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Class of Stock [Line Items]
Total shares issued and outstanding (shares)	43,826	43,826
Carrying value	$ 4,343	$ 4,343
Series A Noncumulative Perpetual Preferred Stock
Class of Stock [Line Items]
Per annum dividend rate	4%
Total shares issued and outstanding (shares)	5,001	5,001
Carrying value	$ 500	$ 500
Liquidation preference per share (usd per share)	$ 100,000
Series A Noncumulative Perpetual Preferred Stock | SOFR
Class of Stock [Line Items]
Preferred stock, basis spread on variable rate	0.565%
Series F Noncumulative Perpetual Preferred Stock
Class of Stock [Line Items]
Per annum dividend rate	4.625%
Total shares issued and outstanding (shares)	10,000	10,000
Carrying value	$ 990	$ 990
Liquidation preference per share (usd per share)	$ 100,000
Series F Noncumulative Perpetual Preferred Stock | SOFR
Class of Stock [Line Items]
Preferred stock, basis spread on variable rate	3.131%
Series G Preferred Stock
Class of Stock [Line Items]
Per annum dividend rate	4.70%
Total shares issued and outstanding (shares)	10,000	10,000
Carrying value	$ 990	$ 990
Liquidation preference per share (usd per share)	$ 100,000
Series G Preferred Stock | SOFR
Class of Stock [Line Items]
Preferred stock, basis spread on variable rate	4.358%
Series H Preferred Stock
Class of Stock [Line Items]
Per annum dividend rate	3.70%
Total shares issued and outstanding (shares)	5,825	5,825
Carrying value	$ 576	$ 576
Liquidation preference per share (usd per share)	$ 100,000
Series H Preferred Stock | SOFR
Class of Stock [Line Items]
Preferred stock, basis spread on variable rate	3.352%
Series I Preferred Stock
Class of Stock [Line Items]
Per annum dividend rate	3.75%
Total shares issued and outstanding (shares)	13,000	13,000
Carrying value	$ 1,287	$ 1,287
Liquidation preference per share (usd per share)	$ 100,000
Series I Preferred Stock | SOFR
Class of Stock [Line Items]
Preferred stock, basis spread on variable rate	2.63%

Preferred stock - Summary of Pr

Preferred stock - Summary of Preferred Dividends Paid (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Class of Stock [Line Items]
Preferred dividends paid	$ 72	$ 46	$ 71
Series A Preferred Stock
Class of Stock [Line Items]
Dividend paid per share (usd per share)	$ 1,566.46	$ 1,573.41	$ 1,327.72
Preferred dividends paid	$ 8	$ 7	$ 7
Depositary shares per share	1%
Series D Preferred Stock
Class of Stock [Line Items]
Dividend paid per share (usd per share)		$ 2,052.42	$ 0
Preferred dividends paid		$ 21	$ 0
Depositary shares per share	1%
Redemption of preferred stock		$ 10
Series F Preferred Stock
Class of Stock [Line Items]
Dividend paid per share (usd per share)	$ 2,312.5	$ 0	$ 2,312.5
Preferred dividends paid	$ 23	$ 0	$ 23
Depositary shares per share	1%
Series G Preferred Stock
Class of Stock [Line Items]
Dividend paid per share (usd per share)	$ 2,350	$ 0	$ 2,350
Preferred dividends paid	$ 24	$ 0	$ 24
Depositary shares per share	1%
Series H Preferred Stock
Class of Stock [Line Items]
Dividend paid per share (usd per share)	$ 925	$ 925	$ 925
Preferred dividends paid	$ 5	$ 5	$ 5
Depositary shares per share	1%
Series I Preferred Stock
Class of Stock [Line Items]
Dividend paid per share (usd per share)	$ 937.50	$ 937.50	$ 937.50
Preferred dividends paid	$ 12	$ 13	$ 12
Depositary shares per share	1%

Other comprehensive income (l_3

Other comprehensive income (loss) - Components (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Pre-tax amount
Total other comprehensive income (loss), Pre-tax amount		$ 99	$ 1,027	$ 500
Tax (expense) benefit
Total other comprehensive income (loss), Tax (expense) benefit		(82)	(115)	(77)
After-tax amount
Foreign currency translation adjustments		(91)	257	103
Total other comprehensive (loss), net of tax	[1]	17	912	423
Foreign currency translation
Pre-tax amount
Other comprehensive income (loss), Pre-tax amount		(44)	172	77
Total other comprehensive income (loss), Pre-tax amount		(44)	172	77
Tax (expense) benefit
Other comprehensive income (loss), Tax (expense) benefit		(47)	85	26
Total other comprehensive income (loss), Tax (expense) benefit		(47)	85	26
After-tax amount
Other comprehensive income (loss), After-tax amount		(91)	257	103
Total other comprehensive (loss), net of tax		(91)	257	103
Unrealized (loss) on assets available-for-sale
Pre-tax amount
Other comprehensive income (loss), Pre-tax amount		137	921	419
Reclassification adjustment, Pre-tax amount		1	48	1
Total other comprehensive income (loss), Pre-tax amount		138	969	420
Tax (expense) benefit
Other comprehensive income (loss), Tax (expense) benefit		(34)	(223)	(102)
Reclassification adjustment, Tax (expense) benefit		0	(11)	0
Total other comprehensive income (loss), Tax (expense) benefit		(34)	(234)	(102)
After-tax amount
Other comprehensive income (loss), After-tax amount		103	698	317
Reclassification adjustment, After-tax amount		1	37	1
Total other comprehensive (loss), net of tax		104	735	318
Defined benefit plans
Pre-tax amount
Other comprehensive income (loss), Pre-tax amount		0	(107)	0
Foreign exchange adjustment		0	(1)	0
Reclassification adjustment, Pre-tax amount		3	(5)	(4)
Total other comprehensive income (loss), Pre-tax amount		3	(113)	(4)
Tax (expense) benefit
Other comprehensive income (loss), Tax (expense) benefit		0	32	0
Foreign exchange adjustment		0	0	0
Reclassification adjustment, Tax (expense) benefit		0	3	1
Total other comprehensive income (loss), Tax (expense) benefit		0	35	1
After-tax amount
Other comprehensive income (loss), After-tax amount		0	(75)	0
Foreign currency translation adjustments		0	(1)	0
Reclassification adjustment, After-tax amount		3	(2)	(3)
Total other comprehensive (loss), net of tax		3	(78)	(3)
Unrealized gain (loss) on cash flow hedges
Pre-tax amount
Other comprehensive income (loss), Pre-tax amount		4	1	4
Reclassification adjustment, Pre-tax amount		(2)	(2)	3
Total other comprehensive income (loss), Pre-tax amount		2	(1)	7
Tax (expense) benefit
Other comprehensive income (loss), Tax (expense) benefit		(1)	(1)	(1)
Reclassification adjustment, Tax (expense) benefit		0	0	(1)
Total other comprehensive income (loss), Tax (expense) benefit		(1)	(1)	(2)
After-tax amount
Other comprehensive income (loss), After-tax amount		3	0	3
Reclassification adjustment, After-tax amount		(2)	(2)	2
Total other comprehensive (loss), net of tax		1	(2)	5
Unrealized gain (loss) on cash flow hedges | Investments And Other Income
Pre-tax amount
Reclassification adjustment, Pre-tax amount		0	(1)	0
Tax (expense) benefit
Reclassification adjustment, Tax (expense) benefit		0	0	0
After-tax amount
Reclassification adjustment, After-tax amount		0	(1)	0
Unrealized gain (loss) on cash flow hedges | Staff expense
Pre-tax amount
Reclassification adjustment, Pre-tax amount		(2)	(1)	3
Tax (expense) benefit
Reclassification adjustment, Tax (expense) benefit		0	0	(1)
After-tax amount
Reclassification adjustment, After-tax amount		$ (2)	$ (1)	$ 2
[1]Other comprehensive income (loss) attributable to The Bank of New York Mellon Corporation shareholders was $17 million for the quarter ended March 31, 2024, $912 million for the quarter ended Dec. 31, 2023 and $423 million for the quarter ended March 31, 2023.

Fair value measurement - Assets

Fair value measurement - Assets and Liabilities on Recurring Basis (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	$ 90,505	$ 76,817
Trading assets:
Total derivatives fair value	6,014	10,531
Effect of master netting agreements	(4,324)	(8,256)
Total derivative assets	1,690	2,275
Trading assets	10,078	10,058
Other assets	1,437	1,261
Trading liabilities:
Total derivatives fair value	5,837	10,946
Effect of master netting agreements	(4,101)	(7,090)
Derivative liabilities	1,736	3,856
Other liabilities	70	195
Interest rate contracts
Trading assets:
Effect of master netting agreements	(853)	(751)
Trading liabilities:
Effect of master netting agreements	(536)	(635)
Foreign exchange contracts
Trading assets:
Effect of master netting agreements	(3,464)	(7,498)
Trading liabilities:
Effect of master netting agreements	(3,517)	(6,341)
Equity contracts
Trading assets:
Effect of master netting agreements	(7)	(7)
Trading liabilities:
Effect of master netting agreements	(48)	(114)
Non-U.S. Government
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	24,317	18,382
U.S. Treasury
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	20,188	16,604
Agency residential mortgage-backed securities (“RMBS”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	16,617	13,111
Agency commercial mortgage-backed securities (“MBS”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	7,584	7,729
Foreign covered bonds
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	7,261	6,334
Collateralized loan obligations (“CLOs”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	6,265	6,137
U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	2,736	2,901
Non-agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	1,703	1,740
Other asset-backed securities (“ABS”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	899	943
Other debt securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	1	1
Not designated as hedging
Trading assets:
Total derivatives fair value	5,630	10,295
Trading liabilities:
Total derivatives fair value	5,789	10,773
Not designated as hedging | Interest rate contracts
Trading assets:
Total derivatives fair value	955	1,060
Trading liabilities:
Total derivatives fair value	1,308	1,347
Not designated as hedging | Foreign exchange contracts
Trading assets:
Total derivatives fair value	4,668	9,227
Trading liabilities:
Total derivatives fair value	4,380	9,282
Not designated as hedging | Equity contracts
Trading assets:
Total derivatives fair value	7	8
Trading liabilities:
Total derivatives fair value	96	138
Designated as hedging
Trading assets:
Total derivatives fair value	384	236
Trading liabilities:
Total derivatives fair value	48	173
Designated as hedging | Interest rate contracts
Trading assets:
Total derivatives fair value	278	214
Trading liabilities:
Total derivatives fair value	0	0
Designated as hedging | Foreign exchange contracts
Trading assets:
Total derivatives fair value	106	22
Trading liabilities:
Total derivatives fair value	48	173
Measured at fair value on a recurring basis | Operating segments
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	90,505	76,817
Trading assets:
Debt instruments	3,712	3,501
Equity instruments	5,060	4,518
Effect of master netting agreements	(4,324)	(8,256)
Trading assets	10,078	10,058
Other assets	887	872
Total other assets	1,271	1,108
Total assets	102,020	88,136
Trading liabilities:
Total trading liabilities	3,100	6,226
Effect of master netting agreements	(4,101)	(7,090)
Derivative liabilities	48
Other liabilities	22	22
Total other liabilities	70	195
Total liabilities	3,170	6,421
Measured at fair value on a recurring basis | Operating segments | Interest rate contracts
Trading assets:
Effect of master netting agreements	(853)	(751)
Trading liabilities:
Effect of master netting agreements	(536)	(635)
Measured at fair value on a recurring basis | Operating segments | Foreign exchange contracts
Trading assets:
Effect of master netting agreements	(3,464)	(7,498)
Trading liabilities:
Effect of master netting agreements	(3,517)	(6,341)
Measured at fair value on a recurring basis | Operating segments | Equity contracts
Trading assets:
Effect of master netting agreements	(7)	(7)
Trading liabilities:
Effect of master netting agreements	(48)	(114)
Measured at fair value on a recurring basis | Operating segments | Non-U.S. Government
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	24,317	18,382
Measured at fair value on a recurring basis | Operating segments | U.S. Treasury
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	20,188	16,604
Measured at fair value on a recurring basis | Operating segments | Agency residential mortgage-backed securities (“RMBS”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	16,617	13,111
Measured at fair value on a recurring basis | Operating segments | Agency commercial mortgage-backed securities (“MBS”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	7,584	7,729
Measured at fair value on a recurring basis | Operating segments | Foreign covered bonds
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	7,261	6,334
Measured at fair value on a recurring basis | Operating segments | Collateralized loan obligations (“CLOs”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	6,265	6,137
Measured at fair value on a recurring basis | Operating segments | Non-agency commercial MBS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	2,934	2,935
Measured at fair value on a recurring basis | Operating segments | U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	2,736	2,901
Measured at fair value on a recurring basis | Operating segments | Non-agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	1,703	1,740
Measured at fair value on a recurring basis | Operating segments | Other asset-backed securities (“ABS”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	899	943
Measured at fair value on a recurring basis | Operating segments | Other debt securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	1	1
Measured at fair value on a recurring basis | Operating segments | Not designated as hedging
Trading assets:
Total derivative assets	1,306	2,039
Trading liabilities:
Derivative liabilities	1,688	3,683
Measured at fair value on a recurring basis | Operating segments | Not designated as hedging | Interest rate contracts
Trading assets:
Total derivative assets	102	309
Trading liabilities:
Derivative liabilities	772	712
Measured at fair value on a recurring basis | Operating segments | Not designated as hedging | Foreign exchange contracts
Trading assets:
Total derivative assets	1,204	1,729
Trading liabilities:
Derivative liabilities	863	2,941
Measured at fair value on a recurring basis | Operating segments | Not designated as hedging | Equity contracts
Trading assets:
Total derivative assets	0	1
Trading liabilities:
Derivative liabilities	53	30
Measured at fair value on a recurring basis | Operating segments | Designated as hedging
Trading assets:
Total derivative assets	384	236
Trading liabilities:
Derivative liabilities		173
Measured at fair value on a recurring basis | Operating segments | Designated as hedging | Interest rate contracts
Trading assets:
Total derivative assets	278	214
Measured at fair value on a recurring basis | Operating segments | Designated as hedging | Foreign exchange contracts
Trading assets:
Total derivative assets	106	22
Trading liabilities:
Derivative liabilities	48	173
Measured at fair value on a recurring basis | Operating segments | Debt instruments
Trading liabilities:
Total trading liabilities	1,392	2,520
Measured at fair value on a recurring basis | Operating segments | Equity instruments
Trading liabilities:
Total trading liabilities	20	23
Measured at fair value on a recurring basis | Operating segments | Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	24,068	19,043
Trading assets:
Debt instruments	1,793	1,246
Equity instruments	5,060	4,518
Trading assets	6,861	5,771
Other assets	431	486
Total other assets	431	486
Total assets	$ 31,360	$ 25,300
Percentage of total assets prior to netting	30%	26%
Trading liabilities:
Total trading liabilities	$ 1,387	$ 2,548
Total derivatives fair value	0
Other liabilities	0	0
Total other liabilities	0	0
Total liabilities	$ 1,387	$ 2,548
Percentage of total liabilities prior to netting	19%	19%
Measured at fair value on a recurring basis | Operating segments | Level 1 | Non-U.S. Government
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	$ 3,880	$ 2,439
Measured at fair value on a recurring basis | Operating segments | Level 1 | U.S. Treasury
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	20,188	16,604
Measured at fair value on a recurring basis | Operating segments | Level 1 | Agency residential mortgage-backed securities (“RMBS”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 1 | Agency commercial mortgage-backed securities (“MBS”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 1 | Foreign covered bonds
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 1 | Collateralized loan obligations (“CLOs”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 1 | Non-agency commercial MBS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 1 | U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 1 | Non-agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 1 | Other asset-backed securities (“ABS”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 1 | Other debt securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 1 | Not designated as hedging
Trading assets:
Total derivatives fair value	8	7
Trading liabilities:
Total derivatives fair value	5	17
Measured at fair value on a recurring basis | Operating segments | Level 1 | Not designated as hedging | Interest rate contracts
Trading assets:
Total derivatives fair value	8	7
Trading liabilities:
Total derivatives fair value	2	8
Measured at fair value on a recurring basis | Operating segments | Level 1 | Not designated as hedging | Foreign exchange contracts
Trading assets:
Total derivatives fair value	0	0
Trading liabilities:
Total derivatives fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 1 | Not designated as hedging | Equity contracts
Trading assets:
Total derivatives fair value	0	0
Trading liabilities:
Total derivatives fair value	3	9
Measured at fair value on a recurring basis | Operating segments | Level 1 | Designated as hedging
Trading assets:
Total derivatives fair value	0	0
Trading liabilities:
Total derivatives fair value		0
Measured at fair value on a recurring basis | Operating segments | Level 1 | Designated as hedging | Interest rate contracts
Trading assets:
Total derivatives fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 1 | Designated as hedging | Foreign exchange contracts
Trading assets:
Total derivatives fair value	0	0
Trading liabilities:
Total derivatives fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 1 | Debt instruments
Trading liabilities:
Total trading liabilities	1,362	2,508
Measured at fair value on a recurring basis | Operating segments | Level 1 | Equity instruments
Trading liabilities:
Total trading liabilities	20	23
Measured at fair value on a recurring basis | Operating segments | Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	66,437	57,774
Trading assets:
Debt instruments	1,919	2,255
Equity instruments	0	0
Trading assets	7,541	12,543
Other assets	456	386
Total other assets	840	622
Total assets	$ 74,818	$ 70,939
Percentage of total assets prior to netting	70%	74%
Trading liabilities:
Total trading liabilities	$ 5,814	$ 10,768
Total derivatives fair value	48
Other liabilities	22	22
Total other liabilities	70	195
Total liabilities	$ 5,884	$ 10,963
Percentage of total liabilities prior to netting	81%	81%
Measured at fair value on a recurring basis | Operating segments | Level 2 | Non-U.S. Government
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	$ 20,437	$ 15,943
Measured at fair value on a recurring basis | Operating segments | Level 2 | U.S. Treasury
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 2 | Agency residential mortgage-backed securities (“RMBS”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	16,617	13,111
Measured at fair value on a recurring basis | Operating segments | Level 2 | Agency commercial mortgage-backed securities (“MBS”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	7,584	7,729
Measured at fair value on a recurring basis | Operating segments | Level 2 | Foreign covered bonds
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	7,261	6,334
Measured at fair value on a recurring basis | Operating segments | Level 2 | Collateralized loan obligations (“CLOs”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	6,265	6,137
Measured at fair value on a recurring basis | Operating segments | Level 2 | Non-agency commercial MBS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	2,934	2,935
Measured at fair value on a recurring basis | Operating segments | Level 2 | U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	2,736	2,901
Measured at fair value on a recurring basis | Operating segments | Level 2 | Non-agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	1,703	1,740
Measured at fair value on a recurring basis | Operating segments | Level 2 | Other asset-backed securities (“ABS”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	899	943
Measured at fair value on a recurring basis | Operating segments | Level 2 | Other debt securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	1	1
Measured at fair value on a recurring basis | Operating segments | Level 2 | Not designated as hedging
Trading assets:
Total derivatives fair value	5,622	10,288
Trading liabilities:
Total derivatives fair value	5,784	10,756
Measured at fair value on a recurring basis | Operating segments | Level 2 | Not designated as hedging | Interest rate contracts
Trading assets:
Total derivatives fair value	947	1,053
Trading liabilities:
Total derivatives fair value	1,306	1,339
Measured at fair value on a recurring basis | Operating segments | Level 2 | Not designated as hedging | Foreign exchange contracts
Trading assets:
Total derivatives fair value	4,668	9,227
Trading liabilities:
Total derivatives fair value	4,380	9,282
Measured at fair value on a recurring basis | Operating segments | Level 2 | Not designated as hedging | Equity contracts
Trading assets:
Total derivatives fair value	7	8
Trading liabilities:
Total derivatives fair value	98	135
Measured at fair value on a recurring basis | Operating segments | Level 2 | Designated as hedging
Trading assets:
Total derivatives fair value	384	236
Trading liabilities:
Total derivatives fair value		173
Measured at fair value on a recurring basis | Operating segments | Level 2 | Designated as hedging | Interest rate contracts
Trading assets:
Total derivatives fair value	278	214
Measured at fair value on a recurring basis | Operating segments | Level 2 | Designated as hedging | Foreign exchange contracts
Trading assets:
Total derivatives fair value	106	22
Trading liabilities:
Total derivatives fair value	48	173
Measured at fair value on a recurring basis | Operating segments | Level 2 | Debt instruments
Trading liabilities:
Total trading liabilities	30	12
Measured at fair value on a recurring basis | Operating segments | Level 2 | Equity instruments
Trading liabilities:
Total trading liabilities	0	0
Measured at fair value on a recurring basis | Operating segments | Level 3
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	0	0
Trading assets:
Debt instruments	0	0
Equity instruments	0	0
Trading assets	0	0
Other assets	0	0
Total other assets	0	0
Total assets	$ 0	$ 0
Percentage of total assets prior to netting	0%	0%
Trading liabilities:
Total trading liabilities	$ 0	$ 0
Total derivatives fair value	0
Other liabilities	0	0
Total other liabilities	0	0
Total liabilities	$ 0	$ 0
Percentage of total liabilities prior to netting	0%	0%
Measured at fair value on a recurring basis | Operating segments | Level 3 | Non-U.S. Government
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	$ 0	$ 0
Measured at fair value on a recurring basis | Operating segments | Level 3 | U.S. Treasury
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 3 | Agency residential mortgage-backed securities (“RMBS”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 3 | Agency commercial mortgage-backed securities (“MBS”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 3 | Foreign covered bonds
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 3 | Collateralized loan obligations (“CLOs”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 3 | Non-agency commercial MBS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 3 | U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 3 | Non-agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 3 | Other asset-backed securities (“ABS”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 3 | Other debt securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 3 | Not designated as hedging
Trading assets:
Total derivatives fair value	0	0
Trading liabilities:
Total derivatives fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 3 | Not designated as hedging | Interest rate contracts
Trading assets:
Total derivatives fair value	0	0
Trading liabilities:
Total derivatives fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 3 | Not designated as hedging | Foreign exchange contracts
Trading assets:
Total derivatives fair value	0	0
Trading liabilities:
Total derivatives fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 3 | Not designated as hedging | Equity contracts
Trading assets:
Total derivatives fair value	0	0
Trading liabilities:
Total derivatives fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 3 | Designated as hedging
Trading assets:
Total derivatives fair value	0	0
Trading liabilities:
Total derivatives fair value		0
Measured at fair value on a recurring basis | Operating segments | Level 3 | Designated as hedging | Interest rate contracts
Trading assets:
Total derivatives fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 3 | Designated as hedging | Foreign exchange contracts
Trading assets:
Total derivatives fair value	0	0
Trading liabilities:
Total derivatives fair value	0	0
Measured at fair value on a recurring basis | Operating segments | Level 3 | Debt instruments
Trading liabilities:
Total trading liabilities	0	0
Measured at fair value on a recurring basis | Operating segments | Level 3 | Equity instruments
Trading liabilities:
Total trading liabilities	0	0
Measured at fair value on a recurring basis | Operating segments | NAV
Trading assets:
Assets measured at NAV	$ 166	$ 153

Fair value measurement - Certai

Fair value measurement - Certain Items on Recurring Basis (Details) - Measured at fair value on a recurring basis - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Non-agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 1,703	$ 1,740
Non-agency RMBS | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	86%	86%
Non-agency RMBS | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	2%	2%
Non-agency RMBS | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-agency RMBS | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	6%	6%
Non-agency RMBS | Not Rated
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	6%	6%
Non-agency RMBS | 2008-2024
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value		$ 1,487
Non-agency RMBS | 2008-2024 | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings		100%
Non-agency RMBS | 2008-2024 | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings		0%
Non-agency RMBS | 2008-2024 | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings		0%
Non-agency RMBS | 2008-2024 | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings		0%
Non-agency RMBS | 2008-2024 | Not Rated
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings		0%
Non-agency RMBS | 2008-2024
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 1,459
Non-agency RMBS | 2008-2024 | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100%
Non-agency RMBS | 2008-2024 | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%
Non-agency RMBS | 2008-2024 | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%
Non-agency RMBS | 2008-2024 | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%
Non-agency RMBS | 2008-2024 | Not Rated
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%
Non-agency RMBS | 2007 and earlier
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 244	$ 253
Non-agency RMBS | 2007 and earlier | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	5%	5%
Non-agency RMBS | 2007 and earlier | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	12%	13%
Non-agency RMBS | 2007 and earlier | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	1%	1%
Non-agency RMBS | 2007 and earlier | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	40%	40%
Non-agency RMBS | 2007 and earlier | Not Rated
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	42%	41%
Non-agency commercial MBS | 2009-2023 | Domestic
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 2,934	$ 2,935
Non-agency commercial MBS | 2009-2023 | AAA/ AA- | Domestic
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100%	100%
Non-agency commercial MBS | 2009-2023 | A/ A- | Domestic
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-agency commercial MBS | 2009-2023 | BBB/ BBB- | Domestic
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-agency commercial MBS | 2009-2023 | BB and lower | Domestic
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-agency commercial MBS | 2009-2023 | Not Rated | Domestic
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Foreign covered bonds
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 7,261	$ 6,334
Foreign covered bonds | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100%	100%
Foreign covered bonds | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Foreign covered bonds | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Foreign covered bonds | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Foreign covered bonds | Not Rated
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Foreign covered bonds | Canada
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 2,454	$ 2,473
Foreign covered bonds | Canada | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100%	100%
Foreign covered bonds | Canada | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Foreign covered bonds | Canada | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Foreign covered bonds | Canada | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Foreign covered bonds | Canada | Not Rated
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Foreign covered bonds | UK
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 1,115	$ 1,035
Foreign covered bonds | UK | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100%	100%
Foreign covered bonds | UK | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Foreign covered bonds | UK | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Foreign covered bonds | UK | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Foreign covered bonds | UK | Not Rated
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Foreign covered bonds | Australia
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 659	$ 689
Foreign covered bonds | Australia | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100%	100%
Foreign covered bonds | Australia | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Foreign covered bonds | Australia | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Foreign covered bonds | Australia | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Foreign covered bonds | Australia | Not Rated
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Foreign covered bonds | Germany
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 647	$ 664
Foreign covered bonds | Germany | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100%	100%
Foreign covered bonds | Germany | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Foreign covered bonds | Germany | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Foreign covered bonds | Germany | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Foreign covered bonds | Germany | Not Rated
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Foreign covered bonds | Other
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 2,386	$ 1,473
Foreign covered bonds | Other | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100%	100%
Foreign covered bonds | Other | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Foreign covered bonds | Other | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Foreign covered bonds | Other | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Foreign covered bonds | Other | Not Rated
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Canada
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 1,601	$ 1,336
Non-U.S. Government | Canada | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	90%	95%
Non-U.S. Government | Canada | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	10%	5%
Non-U.S. Government | Canada | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Canada | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Canada | Not Rated
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Belgium
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 868	$ 511
Non-U.S. Government | Belgium | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100%	100%
Non-U.S. Government | Belgium | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Belgium | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Belgium | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Belgium | Not Rated
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | UK
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 2,211	$ 1,316
Non-U.S. Government | UK | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100%	100%
Non-U.S. Government | UK | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | UK | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | UK | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | UK | Not Rated
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Germany
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 2,712	$ 2,658
Non-U.S. Government | Germany | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100%	100%
Non-U.S. Government | Germany | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Germany | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Germany | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Germany | Not Rated
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Norway
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 374	$ 374
Non-U.S. Government | Norway | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100%	100%
Non-U.S. Government | Norway | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Norway | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Norway | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Norway | Not Rated
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Other
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 1,645	$ 1,348
Non-U.S. Government | Other | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	61%	70%
Non-U.S. Government | Other | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	17%	3%
Non-U.S. Government | Other | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	13%	17%
Non-U.S. Government | Other | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	9%	10%
Non-U.S. Government | Other | Not Rated
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | France
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 1,832	$ 1,562
Non-U.S. Government | France | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100%	100%
Non-U.S. Government | France | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | France | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | France | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | France | Not Rated
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Singapore
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 500	$ 302
Non-U.S. Government | Singapore | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100%	100%
Non-U.S. Government | Singapore | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Singapore | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Singapore | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Singapore | Not Rated
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Japan
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 449	$ 410
Non-U.S. Government | Japan | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Japan | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100%	100%
Non-U.S. Government | Japan | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Japan | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Japan | Not Rated
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Netherlands
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 442	$ 334
Non-U.S. Government | Netherlands | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100%	100%
Non-U.S. Government | Netherlands | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Netherlands | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Netherlands | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Netherlands | Not Rated
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Spain
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 612	$ 293
Non-U.S. Government | Spain | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Spain | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	8%	17%
Non-U.S. Government | Spain | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	92%	83%
Non-U.S. Government | Spain | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Spain | Not Rated
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Finland
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 515	$ 282
Non-U.S. Government | Finland | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100%	100%
Non-U.S. Government | Finland | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Finland | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Finland | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Finland | Not Rated
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Non-U.S. Government | Sovereign debt/sovereign guaranteed | Brazil | Carrying amount
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 146	$ 140
Supranational
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 10,556	$ 7,656
Supranational | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100%	100%
Supranational | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Supranational | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Supranational | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Supranational | Not Rated
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%
Total non-U.S. government:
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 24,317	$ 18,382
Total non-U.S. government: | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	92%	94%
Total non-U.S. government: | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	4%	3%
Total non-U.S. government: | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	3%	2%
Total non-U.S. government: | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	1%	1%
Total non-U.S. government: | Not Rated
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0%	0%

Fair value measurement - Asse_2

Fair value measurement - Assets on Nonrecurring Basis (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets	$ 1,437	$ 1,261
Measured at fair value on a nonrecurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	27	28
Other assets	495	481
Total assets	522	509
Measured at fair value on a nonrecurring basis | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0
Other assets	0	0
Total assets	0	0
Measured at fair value on a nonrecurring basis | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	27	28
Other assets	495	481
Total assets	522	509
Measured at fair value on a nonrecurring basis | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	0	0
Other assets	0	0
Total assets	$ 0	$ 0

Fair value measurement - Financ

Fair value measurement - Financial Instruments (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Assets:
Interest-bearing deposits with the Federal Reserve and other central banks	$ 119,197	$ 111,550
Interest-bearing deposits with banks	10,636	12,139
Securities held-to-maturity	43,213	44,711
Other financial assets	1,437	1,261
Liabilities:
Noninterest-bearing deposits	63,405	58,274
Payables to customers and broker-dealers	19,392	18,395
Estimated fair value
Assets:
Interest-bearing deposits with the Federal Reserve and other central banks	119,197	111,550
Interest-bearing deposits with banks	10,647	12,134
Federal funds sold and securities purchased under resale agreements	29,661	28,900
Securities held-to-maturity	43,213	44,711
Loans	71,851	65,026
Other financial assets	7,664	7,071
Total assets	282,233	269,392
Liabilities:
Noninterest-bearing deposits	63,405	58,274
Interest-bearing deposits	241,685	221,463
Federal funds purchased and securities sold under repurchase agreements	15,112	14,507
Payables to customers and broker-dealers	19,392	18,395
Borrowings	1,202	1,274
Long-term debt	31,549	30,596
Total liabilities	372,345	344,509
Estimated fair value | Level 1
Assets:
Interest-bearing deposits with the Federal Reserve and other central banks	0	0
Interest-bearing deposits with banks	0	0
Federal funds sold and securities purchased under resale agreements	0	0
Securities held-to-maturity	9,162	9,545
Loans	0	0
Other financial assets	5,305	4,922
Total assets	14,467	14,467
Liabilities:
Noninterest-bearing deposits	0	0
Interest-bearing deposits	0	0
Federal funds purchased and securities sold under repurchase agreements	0	0
Payables to customers and broker-dealers	0	0
Borrowings	0	0
Long-term debt	0	0
Total liabilities	0	0
Estimated fair value | Level 2
Assets:
Interest-bearing deposits with the Federal Reserve and other central banks	119,197	111,550
Interest-bearing deposits with banks	10,647	12,134
Federal funds sold and securities purchased under resale agreements	29,661	28,900
Securities held-to-maturity	34,051	35,166
Loans	71,851	65,026
Other financial assets	2,359	2,149
Total assets	267,766	254,925
Liabilities:
Noninterest-bearing deposits	63,405	58,274
Interest-bearing deposits	241,685	221,463
Federal funds purchased and securities sold under repurchase agreements	15,112	14,507
Payables to customers and broker-dealers	19,392	18,395
Borrowings	1,202	1,274
Long-term debt	31,549	30,596
Total liabilities	372,345	344,509
Estimated fair value | Level 3
Assets:
Interest-bearing deposits with the Federal Reserve and other central banks	0	0
Interest-bearing deposits with banks	0	0
Federal funds sold and securities purchased under resale agreements	0	0
Securities held-to-maturity	0	0
Loans	0	0
Other financial assets	0	0
Total assets	0	0
Liabilities:
Noninterest-bearing deposits	0	0
Interest-bearing deposits	0	0
Federal funds purchased and securities sold under repurchase agreements	0	0
Payables to customers and broker-dealers	0	0
Borrowings	0	0
Long-term debt	0	0
Total liabilities	0	0
Carrying amount
Assets:
Interest-bearing deposits with the Federal Reserve and other central banks	119,197	111,550
Interest-bearing deposits with banks	10,636	12,139
Federal funds sold and securities purchased under resale agreements	29,661	28,900
Securities held-to-maturity	48,404	49,578
Loans	72,694	65,977
Other financial assets	7,664	7,071
Total assets	288,256	275,215
Liabilities:
Noninterest-bearing deposits	63,405	58,274
Interest-bearing deposits	245,615	225,395
Federal funds purchased and securities sold under repurchase agreements	15,112	14,507
Payables to customers and broker-dealers	19,392	18,395
Borrowings	1,202	1,274
Long-term debt	32,396	31,257
Total liabilities	$ 377,122	$ 349,102

Fair value option - Assets and

Fair value option - Assets and Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Assets of consolidated investment management funds:
Trading assets	$ 10,078	$ 10,058
Other assets	1,437	1,261
Liabilities of consolidated investment management funds:
Other liabilities	70	195
Investment Management funds
Assets of consolidated investment management funds:
Trading assets	547	510
Other assets	21	16
Total assets	568	526
Liabilities of consolidated investment management funds:
Other liabilities	5	1
Total liabilities	$ 5	$ 1

Fair value option - Narrative (

Fair value option - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Fair Value Disclosures [Abstract]
Subordinated notes, fair value	$ 4	$ 4

Derivative instruments - Narrat

Derivative instruments - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Counterparty default losses recorded	$ 0
Non-derivative financial instruments designated as hedges of net investments in foreign subsidiaries were all long-term liabilities of BNY Mellon in various currencies	0
Gain or (loss) recognized in income on derivatives	$ 2,000,000	$ 1,000,000	$ (4,000,000)
Value-at-risk methodology assumed holding period for instruments	1 day
Value-at-risk methodology confidence level percentage	99%
Additional collateral The Bank of New York Mellon would have to post for existing collateral arrangements, if The Bank of New York Mellon had fallen below investment grade	$ 283,000,000	235,000,000
Interest rate swap | Fair value hedging
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Interest rate swaps designated as portfolio layer method fair value hedges of loans	250,000,000
Foreign exchange contracts | Net investment hedging
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Hedged financial instruments, notional amount of derivative	10,600,000,000
Foreign exchange contracts | Forecasted Foreign Currency
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Gain to be reclassified in next 12 months from AOCI to earnings	5,000,000
Foreign exchange contracts | Forecasted Foreign Currency | Cash flow hedges
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Hedged financial instruments, notional amount of derivative	$ 689,000,000
Original maturities, maximum, of hedged instruments	15 months
Pre-tax gain recognized in OCI related to cash flow hedges	$ 5,000,000
Foreign Exchange Forward
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Hedging derivatives, maturities, maximum	1 year
Securities – Available-for-sale | Interest rate swap
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Hedged financial instruments	$ 33,600,000,000
Hedged financial instruments, notional amount of derivative	33,600,000,000
Securities – Available-for-sale | Foreign Exchange Forward
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Hedged financial instruments	0
Long-term debt | Interest rate swap
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Hedged financial instruments	23,400,000,000
Hedged financial instruments, notional amount of derivative	$ 23,400,000,000
Original maturities, minimum, of hedged instruments	5 years
Original maturities, maximum, of hedged instruments	30 years
Not Designated as Hedging Instrument, Economic Hedge | Equity Swap
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Gain or (loss) recognized in income on derivatives	$ 11,000,000	$ 18,000,000	$ 7,000,000

Derivative instruments - Gains

Derivative instruments - Gains (Losses) Related to Hedging Derivative Portfolio Recognized in the Income Statement (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in the consolidated income statement due to fair value and cash flow hedging relationships	$ 2	$ 1	$ (4)
Interest rate contracts | Securities – Available-for-sale | Interest income
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (loss) recognized on derivatives	449	(1,023)	(435)
Gain or (loss) recognized on hedged item	(449)	1,022	434
Interest rate contracts | Long-term debt | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (loss) recognized on derivatives	(221)	645	279
Gain or (loss) recognized on hedged item	221	(645)	(279)
Interest rate contracts | Loans | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (loss) recognized on derivatives	(1)	0	0
Gain or (loss) recognized on hedged item	1	0	0
FX contracts | Staff expense
Derivative Instruments, Gain (Loss) [Line Items]
Loss (gain) on cash flow hedges	2	1	(3)
FX contracts | Investment and other income
Derivative Instruments, Gain (Loss) [Line Items]
Loss (gain) on cash flow hedges	$ 0	$ 1	$ 0

Derivative instruments - Impact

Derivative instruments - Impact of Hedging Derivatives Used in Net Investment Hedging Relationships (Details) - FX contracts - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (loss) recognized in accumulated OCI on derivatives	$ 198	$ (355)	$ (111)
Net interest income
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (loss) reclassified from accumulated OCI into income	$ 0	$ 0	$ 0

Derivative instruments - Hedged

Derivative instruments - Hedged Items in Fair Value Hedging Relationships (Details) - Fair value hedging - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Securities – Available-for-sale
Derivative [Line Items]
Carrying amount of hedged asset or liability, Available-for-sale securities	$ 33,228	$ 29,941
Hedge accounting basis adjustment increase (decrease), Available-for-sale securities	(2,161)	(1,767)
Hedge accounting basis adjustment increase (decrease), discontinued hedges	(405)	(434)
Available-for-sale securities included in closed portfolios, subject to portfolio layer method	5,300
Available-for-sale securities included in closed portfolios, subject to portfolio layer method, increase	(12)
Long-term debt
Derivative [Line Items]
Carrying amount of hedged asset or liability, Long-term debt	22,288	21,854
Hedge accounting basis adjustment increase (decrease), Long-term debt	(1,062)	(846)
Hedged liability, discontinued fair value hedge, cumulative increase (decrease)	(21)	(26)
Loans
Derivative [Line Items]
Carrying amount of hedged asset or liability, Available-for-sale securities	251	0
Hedge accounting basis adjustment increase (decrease), Available-for-sale securities	1	$ 0
Available-for-sale securities included in closed portfolios, subject to portfolio layer method	3,300
Available-for-sale securities included in closed portfolios, subject to portfolio layer method, increase	1
Designated as hedging | Securities – Available-for-sale
Derivative [Line Items]
Available-for-sale securities included in closed portfolios, subject to portfolio layer method	2,500
Designated as hedging | Loans
Derivative [Line Items]
Available-for-sale securities included in closed portfolios, subject to portfolio layer method	$ 250

Derivative instruments - Impa_2

Derivative instruments - Impact of Derivative Instruments on the Balance Sheet (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Asset derivatives fair value
Total derivatives fair value	$ 6,014	$ 10,531
Effect of master netting agreements	(4,324)	(8,256)
Fair value after effect of master netting agreements	1,690	2,275
Liability derivatives fair value
Total derivatives fair value	5,837	10,946
Effect of master netting agreements	(4,101)	(7,090)
Fair value after effect of master netting agreements	1,736	3,856
Derivative asset, collateral, obligation to return cash, offset	998	2,353
Derivative liability, collateral, right to reclaim cash, offset	775	1,187
Interest rate contracts
Asset derivatives fair value
Effect of master netting agreements	(853)	(751)
Liability derivatives fair value
Effect of master netting agreements	(536)	(635)
Foreign exchange contracts
Asset derivatives fair value
Effect of master netting agreements	(3,464)	(7,498)
Liability derivatives fair value
Effect of master netting agreements	(3,517)	(6,341)
Equity contracts
Asset derivatives fair value
Effect of master netting agreements	(7)	(7)
Liability derivatives fair value
Effect of master netting agreements	(48)	(114)
Designated as hedging
Asset derivatives fair value
Total derivatives fair value	384	236
Liability derivatives fair value
Total derivatives fair value	48	173
Designated as hedging | Interest rate contracts
Notional value
Notional amount of hedge	57,161	52,808
Asset derivatives fair value
Total derivatives fair value	278	214
Liability derivatives fair value
Total derivatives fair value	0	0
Designated as hedging | Foreign exchange contracts
Notional value
Notional amount of hedge	11,243	11,099
Asset derivatives fair value
Total derivatives fair value	106	22
Liability derivatives fair value
Total derivatives fair value	48	173
Not designated as hedging
Asset derivatives fair value
Total derivatives fair value	5,630	10,295
Liability derivatives fair value
Total derivatives fair value	5,789	10,773
Not designated as hedging | Interest rate contracts
Notional value
Notional amount of hedge	157,599	155,535
Asset derivatives fair value
Total derivatives fair value	955	1,060
Liability derivatives fair value
Total derivatives fair value	1,308	1,347
Not designated as hedging | Foreign exchange contracts
Notional value
Notional amount of hedge	1,016,850	944,241
Asset derivatives fair value
Total derivatives fair value	4,668	9,227
Liability derivatives fair value
Total derivatives fair value	4,380	9,282
Not designated as hedging | Equity contracts
Notional value
Notional amount of hedge	4,351	3,886
Asset derivatives fair value
Total derivatives fair value	7	8
Liability derivatives fair value
Total derivatives fair value	96	138
Not designated as hedging | Credit contracts
Notional value
Notional amount of hedge	255	220
Asset derivatives fair value
Total derivatives fair value	0	0
Liability derivatives fair value
Total derivatives fair value	$ 5	$ 6

Derivative instruments - Revenu

Derivative instruments - Revenue from Foreign Exchange and Other Trading (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Foreign exchange revenue	$ 152	$ 143	$ 176
Other trading revenue	69	47	45
Gain or (loss) recognized in income on derivatives	$ 2	$ 1	$ (4)

Derivative instruments - Contra

Derivative instruments - Contracts Falling under Early Termination Provisions (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Credit Derivatives [Line Items]
Aggregate fair value of OTC derivatives in net liability positions	$ 1,002	$ 1,003
Collateral posted	1,009	1,001
A3 | A-
Credit Derivatives [Line Items]
Aggregate fair value of OTC derivatives in net liability positions	82	115
Baa2 | BBB
Credit Derivatives [Line Items]
Aggregate fair value of OTC derivatives in net liability positions	418	792
Ba1 | BB+ and lower
Credit Derivatives [Line Items]
Aggregate fair value of OTC derivatives in net liability positions	$ 968	$ 1,920

Derivative instruments - Offset

Derivative instruments - Offsetting (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Derivative Asset
Derivatives subject to netting arrangements, Gross assets recognized	$ 5,569	$ 9,538
Total derivatives subject to netting arrangements, Gross amounts offset in the balance sheet	4,324	8,256
Derivatives subject to netting arrangements, Net assets recognized in the balance sheet	1,245	1,282
Total derivatives, Gross amounts not offset in the balance sheet, Financial instruments	93	380
Total derivatives, Gross amounts not offset in the balance sheet, Cash collateral received	0	0
Total derivatives subject to netting arrangements, Net amount	1,152	902
Total derivatives not subject to netting arrangements	445	993
Total derivatives, Gross assets recognized	6,014	10,531
Fair value after effect of master netting agreements	1,690	2,275
Total derivatives, Net amount	1,597	1,895
Reverse repurchase agreements, Gross assets recognized	179,182	169,092
Reverse repurchase agreements, Gross amounts offset in the balance sheet	162,579	150,667
Reverse repurchase agreements, Net assets recognized on the balance sheet	16,603	18,425
Reverse repurchase agreements, Gross amounts not offset in the balance sheet, Financial instruments	16,581	18,422
Reverse repurchase agreements, Gross amounts not offset in the balance sheet, Cash collateral received	0	0
Reverse repurchase agreements, Net amount	22	3
Securities borrowing, Gross asset recognized	13,058	10,475
Securities borrowing, Net assets recognized on the balance sheet	13,058	10,475
Securities borrowing, Gross amounts not offset in the balance sheet, Financial instruments	12,365	10,011
Securities borrowing, Net amount	693	464
Total, Gross assets recognized	198,254	190,098
Total, Gross amounts offset in the balance sheet	166,903	158,923
Total, Net assets recognized on the balance sheet	31,351	31,175
Total, Gross amounts not offset in the balance sheet, Financial instruments	29,039	28,813
Total, Gross amounts not offset in the balance sheet, Cash collateral received	0	0
Total, Net amount	2,312	2,362
Derivative Liability
Derivatives subject to netting arrangements, Gross liabilities recognized	5,297	9,700
Derivatives subject to netting arrangements, Gross amounts offset in the balance sheet	4,101	7,090
Derivatives subject to netting arrangements, Net liabilities recognized in the balance sheet	1,196	2,610
Total derivatives, Gross amounts not offset in the balance sheet, Financial instruments	223	171
Total derivatives, Gross amounts not offset in the balance sheet, Cash collateral pledged	0	0
Total derivatives subject to netting arrangement, Net amount	973	2,439
Total derivatives not subject to netting arrangements	540	1,246
Total derivatives, Gross liabilities recognized	5,837	10,946
Fair value after effect of master netting agreements	1,736	3,856
Derivative Liability, Fair Value, Amount Offset Against Collateral	1,513	3,685
Repurchase agreements, Gross liabilities recognized	174,752	162,661
Repurchase agreements, Gross amounts offset in the balance sheet	162,579	150,667
Repurchase agreements, Net liabilities recognized on the balance sheet	12,173	11,994
Repurchase agreements, Gross amounts not offset in the balance sheet, Financial instruments	12,156	11,966
Repurchase agreements, Gross amounts not offset in the balance sheet, Cash collateral pledged	17	28
Repurchase agreements, Net amount	0	0
Securities lending, Gross liabilities recognized	2,939	2,513
Securities lending, Net liabilities recognized on the balance sheet	2,939	2,513
Securities lending, Gross amounts not offset in the balance sheet, Financial instruments	2,839	2,404
Securities lending, Net amount	100	109
Total, Gross liabilities recognized	183,528	176,120
Total, Gross amounts offset in the balance sheet	166,680	157,757
Total, Net liabilities recognized on the balance sheet	16,848	18,363
Total, Gross amounts not offset in the balance sheet, Financial instruments	15,218	14,541
Total, Gross amounts not offset in the balance sheet, Cash collateral pledged	17	28
Total, Net amount	1,613	3,794
Interest rate contracts
Derivative Asset
Derivatives subject to netting arrangements, Gross assets recognized	1,016	979
Total derivatives subject to netting arrangements, Gross amounts offset in the balance sheet	853	751
Derivatives subject to netting arrangements, Net assets recognized in the balance sheet	163	228
Total derivatives, Gross amounts not offset in the balance sheet, Financial instruments	31	60
Total derivatives, Gross amounts not offset in the balance sheet, Cash collateral received	0	0
Total derivatives subject to netting arrangements, Net amount	132	168
Derivative Liability
Derivatives subject to netting arrangements, Gross liabilities recognized	1,002	1,118
Derivatives subject to netting arrangements, Gross amounts offset in the balance sheet	536	635
Derivatives subject to netting arrangements, Net liabilities recognized in the balance sheet	466	483
Total derivatives, Gross amounts not offset in the balance sheet, Financial instruments	55	78
Total derivatives, Gross amounts not offset in the balance sheet, Cash collateral pledged	0	0
Total derivatives subject to netting arrangement, Net amount	411	405
Foreign exchange contracts
Derivative Asset
Derivatives subject to netting arrangements, Gross assets recognized	4,546	8,552
Total derivatives subject to netting arrangements, Gross amounts offset in the balance sheet	3,464	7,498
Derivatives subject to netting arrangements, Net assets recognized in the balance sheet	1,082	1,054
Total derivatives, Gross amounts not offset in the balance sheet, Financial instruments	62	320
Total derivatives, Gross amounts not offset in the balance sheet, Cash collateral received	0	0
Total derivatives subject to netting arrangements, Net amount	1,020	734
Derivative Liability
Derivatives subject to netting arrangements, Gross liabilities recognized	4,205	8,454
Derivatives subject to netting arrangements, Gross amounts offset in the balance sheet	3,517	6,341
Derivatives subject to netting arrangements, Net liabilities recognized in the balance sheet	688	2,113
Total derivatives, Gross amounts not offset in the balance sheet, Financial instruments	150	93
Total derivatives, Gross amounts not offset in the balance sheet, Cash collateral pledged	0	0
Total derivatives subject to netting arrangement, Net amount	538	2,020
Equity and other contracts
Derivative Asset
Derivatives subject to netting arrangements, Gross assets recognized	7	7
Total derivatives subject to netting arrangements, Gross amounts offset in the balance sheet	7	7
Derivatives subject to netting arrangements, Net assets recognized in the balance sheet	0	0
Total derivatives, Gross amounts not offset in the balance sheet, Financial instruments	0	0
Total derivatives, Gross amounts not offset in the balance sheet, Cash collateral received	0	0
Total derivatives subject to netting arrangements, Net amount	0	0
Derivative Liability
Derivatives subject to netting arrangements, Gross liabilities recognized	90	128
Derivatives subject to netting arrangements, Gross amounts offset in the balance sheet	48	114
Derivatives subject to netting arrangements, Net liabilities recognized in the balance sheet	42	14
Total derivatives, Gross amounts not offset in the balance sheet, Financial instruments	18	0
Total derivatives, Gross amounts not offset in the balance sheet, Cash collateral pledged	0	0
Total derivatives subject to netting arrangement, Net amount	$ 24	$ 14

Derivative instruments - Secure

Derivative instruments - Secured Borrowings (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	$ 174,752	$ 162,661
Securities lending	2,939	2,513
Total borrowings	177,691	165,174
Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	165,740	155,356
Securities lending	2,939	2,513
Total borrowings	168,679	157,869
Up to 30 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	1,998	315
Securities lending	0	0
Total borrowings	1,998	315
30-90 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	4,975	5,375
Securities lending	0	0
Total borrowings	4,975	5,375
Over 90 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	2,039	1,615
Securities lending	0	0
Total borrowings	2,039	1,615
U.S. Treasury
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	137,910	130,238
U.S. Treasury | Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	135,849	128,304
U.S. Treasury | Up to 30 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	50	15
U.S. Treasury | 30-90 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	1,613	1,409
U.S. Treasury | Over 90 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	398	510
Agency residential mortgage-backed securities (“RMBS”)
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	29,939	26,831
Securities lending	103	111
Agency residential mortgage-backed securities (“RMBS”) | Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	28,705	25,815
Securities lending	103	111
Agency residential mortgage-backed securities (“RMBS”) | Up to 30 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	1	0
Securities lending	0	0
Agency residential mortgage-backed securities (“RMBS”) | 30-90 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	814	896
Securities lending	0	0
Agency residential mortgage-backed securities (“RMBS”) | Over 90 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	419	120
Securities lending	0	0
Sovereign debt/sovereign guaranteed
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	2,561	1,049
Sovereign debt/sovereign guaranteed | Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	912	1,049
Sovereign debt/sovereign guaranteed | Up to 30 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	1,649	0
Sovereign debt/sovereign guaranteed | 30-90 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	0	0
Sovereign debt/sovereign guaranteed | Over 90 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	0	0
Corporate bonds
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	2,149	2,080
Corporate bonds | Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	97	103
Corporate bonds | Up to 30 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	121	72
Corporate bonds | 30-90 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	1,348	1,315
Corporate bonds | Over 90 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	583	590
State and political subdivisions
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	813	781
State and political subdivisions | Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	43	37
State and political subdivisions | Up to 30 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	33	38
State and political subdivisions | 30-90 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	496	449
State and political subdivisions | Over 90 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	241	257
U.S. government agencies
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	212	137
U.S. government agencies | Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	28	44
U.S. government agencies | Up to 30 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	0	0
U.S. government agencies | 30-90 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	122	61
U.S. government agencies | Over 90 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	62	32
Other debt securities
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	257	281
Securities lending	45	25
Other debt securities | Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	106	4
Securities lending	45	25
Other debt securities | Up to 30 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	100	180
Securities lending	0	0
Other debt securities | 30-90 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	49	73
Securities lending	0	0
Other debt securities | Over 90 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	2	24
Securities lending	0	0
Equity securities
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	911	1,264
Securities lending	2,791	2,377
Equity securities | Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	0	0
Securities lending	2,791	2,377
Equity securities | Up to 30 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	44	10
Securities lending	0	0
Equity securities | 30-90 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	533	1,172
Securities lending	0	0
Equity securities | Over 90 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	334	82
Securities lending	$ 0	$ 0

Commitments and contingent li_3

Commitments and contingent liabilities - Summary of Off-Balance Sheet Credit Risks, Net of Participations (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Securities lending indemnifications, joint venture	$ 59,000	$ 59,000
Invested in reverse repurchase agreements
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Cash collateral invested in indemnified repurchase agreements	58,000	45,000
Lending commitments
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet credit risks	49,872	46,518
Standby letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet credit risks	1,694	1,816
Off-balance sheet credit risks participations	135	163
Commercial letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet credit risks	66	41
Securities lending indemnifications
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet credit risks	$ 541,366	$ 492,739

Commitments and contingent li_4

Commitments and contingent liabilities - Narrative (Details)

2 Months Ended

3 Months Ended

Jun. 07, 2022 USD ($)

May 09, 2022 USD ($)

May 20, 2021 USD ($)

Sep. 09, 2020 USD ($)

Dec. 17, 2015 lawsuit

Dec. 31, 2020 USD ($)

Mar. 31, 2024 USD ($) claim

Dec. 31, 2023 USD ($)

Mar. 31, 2023 USD ($)

Feb. 28, 2022 claim

Dec. 31, 2021 claim

Oct. 31, 2021 claim

Sep. 30, 2021 claim

Aug. 04, 2021 investmentFund

May 31, 2016 claim

Dec. 31, 2015 claim

Dec. 31, 2011 claim

Nov. 30, 2009 claim

Commitments and Contingencies Disclosure [Line Items]

Lending commitment maturing in less than one year

$ 30,300,000,000

Lending commitment maturing in one to five years

19,100,000,000

Lending commitment maturing over five years

471,000,000

Allowance for credit losses on lending related commitments

$ 81,000,000

$ 87,000,000

$ 83,000,000

Collateralization percentage generally required for a securities lending transaction with indemnification against broker default

102%

Securities lending indemnifications, secured amount of collateral

$ 569,000,000,000

518,000,000,000

Securities lending indemnifications, joint venture

59,000,000,000

59,000,000,000

Securities lending indemnifications, collateral joint venture

63,000,000,000

62,000,000,000

Unsettled Repurchase Agreements

Commitments and Contingencies Disclosure [Line Items]

Unsettled repurchase and reverse repurchase agreements

0

0

Unsettled Reverse Repurchase Agreements

Commitments and Contingencies Disclosure [Line Items]

Unsettled repurchase and reverse repurchase agreements

$ 85,400,000,000

77,900,000,000

Mortgage-Securitization Trusts Proceedings | Federal Court

Commitments and Contingencies Disclosure [Line Items]

Number of lawsuits or class actions (claim) | claim

2

Mortgage-Securitization Trusts Proceedings | State Court

Commitments and Contingencies Disclosure [Line Items]

Number of lawsuits or class actions (claim) | claim

6

3

3

3

2

1

Matters Related to R. Allen Stanford

Commitments and Contingencies Disclosure [Line Items]

Number of lawsuits or class actions (claim) | claim

2

1

New claims filed, number (in claims) | claim

3

Brazilian Postalis Litigation

Commitments and Contingencies Disclosure [Line Items]

New claims filed, number (in claims) | lawsuit

3

Damages awarded, value

$ 2,000,000

$ 20,000,000

$ 3,000,000

$ 50,000,000

Number of investment funds | investmentFund

3

Damages sought, value

$ 2,000,000

German Tax Matters | Foreign Tax Authority

Commitments and Contingencies Disclosure [Line Items]

Damages sought, value

$ 150,000,000

Maximum

Commitments and Contingencies Disclosure [Line Items]

Loss contingency, aggregate range of reasonable loss (up to)

$ 660,000,000

Standby letters of credit

Commitments and Contingencies Disclosure [Line Items]

Standby letters of credit (SBLC) collateralized with cash and securities

162,000,000

158,000,000

SBLC expiring within one year

1,200,000,000

SBLC expiring within one to five years

466,000,000

SBLC expiring over five years

8,000,000

Off-balance sheet credit risks

1,694,000,000

1,816,000,000

Commercial letters of credit

Commitments and Contingencies Disclosure [Line Items]

Off-balance sheet credit risks

$ 66,000,000

$ 41,000,000

Commitments and contingent li_5

Commitments and contingent liabilities - Standby Letters of Credits by Investment Grade (Details) - Standby letters of credit	Mar. 31, 2024	Dec. 31, 2023
Investment grade
Concentration Risk [Line Items]
Standby letters of credit by investment grade	71%	74%
Non-investment grade
Concentration Risk [Line Items]
Standby letters of credit by investment grade	29%	26%

Commitments and contingent li_6

Commitments and contingent liabilities - Significant Industry Concentrations Related to Credit Exposure (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	$ 73,615	$ 66,879
Financial institutions
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	12,059	$ 10,521
Unfunded commitments	32,300
Total exposure	44,400
Financial institutions | Securities industry
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	2,600
Unfunded commitments	17,900
Total exposure	20,500
Financial institutions | Asset managers
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	1,400
Unfunded commitments	8,100
Total exposure	9,500
Financial institutions | Banks
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	7,500
Unfunded commitments	1,400
Total exposure	8,900
Financial institutions | Insurance
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	100
Unfunded commitments	3,800
Total exposure	3,900
Financial institutions | Government
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	0
Unfunded commitments	300
Total exposure	300
Financial institutions | Other
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	500
Unfunded commitments	800
Total exposure	1,300
Commercial
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	2,400
Unfunded commitments	11,900
Total exposure	14,300
Commercial | Services and other
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	1,400
Unfunded commitments	3,500
Total exposure	4,900
Commercial | Manufacturing
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	800
Unfunded commitments	3,700
Total exposure	4,500
Commercial | Energy and utilities
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	200
Unfunded commitments	4,000
Total exposure	4,200
Commercial | Media and telecom
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	0
Unfunded commitments	700
Total exposure	$ 700

Business segments - Narrative (

Business segments - Narrative (Details)	3 Months Ended
	Mar. 31, 2024 business
Segment Reporting [Abstract]
Number of principal businesses (business)	3

Business segments - Contributio

Business segments - Contribution of Segments to Overall Profitability (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Segment Reporting Information [Line Items]
Total fee and other revenue	[1]	$ 3,487	$ 3,257	$ 3,287
Net interest income (expense)		1,040	1,101	1,128
Provision for credit losses		27	84	27
Noninterest expense		3,176	3,995	3,100
Net income (loss) attributable to noncontrolling interests		2	(2)	0
Operating segments
Segment Reporting Information [Line Items]
Total fee and other revenue		3,485	3,259	3,287
Operating segments | Total Segments
Segment Reporting Information [Line Items]
Total fee and other revenue		3,485	3,259	3,287
Net interest income (expense)		1,040	1,101	1,128
Total revenue		4,525	4,360	4,415
Provision for credit losses		27	84	27
Noninterest expense		3,176	3,995	3,100
Income (loss) before income taxes		$ 1,322	$ 281	$ 1,288
Pre-tax operating margin		29%	6%	29%
Average assets		$ 403,985	$ 401,605	$ 407,278
Operating segments | Securities Services
Segment Reporting Information [Line Items]
Total fee and other revenue		1,556	1,544	1,443
Net interest income (expense)		583	635	666
Total revenue		2,139	2,179	2,109
Provision for credit losses		11	64	0
Noninterest expense		1,537	1,653	1,540
Income (loss) before income taxes		$ 591	$ 462	$ 569
Pre-tax operating margin		28%	21%	27%
Average assets		$ 191,544	$ 200,040	$ 196,560
Operating segments | Market and Wealth Services
Segment Reporting Information [Line Items]
Total fee and other revenue		1,094	1,060	1,018
Net interest income (expense)		423	436	453
Total revenue		1,517	1,496	1,471
Provision for credit losses		5	28	0
Noninterest expense		834	837	782
Income (loss) before income taxes		$ 678	$ 631	$ 689
Pre-tax operating margin		45%	42%	47%
Average assets		$ 123,552	$ 132,357	$ 132,005
Operating segments | Investment and Wealth Management
Segment Reporting Information [Line Items]
Total fee and other revenue		805	634	785
Net interest income (expense)		41	45	45
Total revenue		846	679	830
Provision for credit losses		(1)	(2)	0
Noninterest expense		740	685	737
Income (loss) before income taxes		$ 107	$ (4)	$ 93
Pre-tax operating margin		13%	(1.00%)	11%
Average assets		$ 26,272	$ 26,341	$ 28,370
Net income (loss) attributable to noncontrolling interests		2	(2)	0
Operating segments | Other
Segment Reporting Information [Line Items]
Total fee and other revenue		30	21	41
Net interest income (expense)		(7)	(15)	(36)
Total revenue		23	6	5
Provision for credit losses		12	(6)	27
Noninterest expense		65	820	41
Income (loss) before income taxes		(54)	(808)	(63)
Average assets		$ 62,617	$ 42,867	$ 50,343
[1]Prior periods were restated to reflect the retrospective application of adopting new accounting guidance related to our investments in renewable energy projects using the proportional amortization method (ASU 2023-02). See Note 2 of the Notes to Consolidated Financial Statements for additional information

Supplemental information to t_3

Supplemental information to the Consolidated Statement of Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Supplemental Cash Flow Information [Abstract]
Change in assets of consolidated investment management funds	$ 42		$ 227
Change in liabilities of consolidated investment management funds	4		0
Change in nonredeemable noncontrolling interests of consolidated investment management funds	61		65
Securities purchased not settled	1,010		240
Securities sold not settled	(6)		(162)
Premises and equipment/operating lease obligations	45		98
Excise tax on share repurchases	$ 6	$ 5	$ 10