The Bank of New York Mellon Corporation (BK) 10-Q 5 Nov 20 2020 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information	9 Months Ended
	Sep. 30, 2020shares
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2020
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)	886,135,805
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001390777
Current Fiscal Year End Date	--12-31
Common Stock, $0.01 par value | New York Stock Exchange
Document Information [Line Items]
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	BK
Security Exchange Name	NYSE
Series C Noncumulative Perpetual Preferred Stock | New York Stock Exchange
Document Information [Line Items]
Title of 12(b) Security	Depositary Shares, each representing 1/4,000th of a share of Series C Noncumulative Perpetual Preferred Stock
Trading Symbol	BK PrC
Security Exchange Name	NYSE
6.244% Fixed-to-Floating Rate Normal Preferred Capital Securities of Mellon Capital IV | New York Stock Exchange
Document 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			9 Months Ended
		Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020		Sep. 30, 2019
Fee and other revenue
Asset servicing fees		$ 1,168	$ 1,173	$ 1,152	$ 3,500		$ 3,415
Clearing services fees		397	431	419	1,298		1,227
Issuer services fees		295	277	324	835		866
Treasury services fees		152	144	140	445		412
Total investment services fees		2,012	2,025	2,035	6,078		5,920
Investment management and performance fees		835	786	832	2,483		2,506
Foreign exchange and other trading revenue		137	166	150	622		486
Financing-related fees		49	58	49	166		150
Distribution and servicing		29	27	33	87		95
Investment and other income		46	105	30	162		108
Total fee revenue		3,108	3,167	3,129	9,598		9,265
Net securities gains (losses)		9	9	(1)	27		7
Total fee and other revenue		3,117	3,176	3,128	9,625		9,272
Operations of consolidated investment management funds
Investment income		27	54	4	43		40
Interest of investment management fund note holders		0	0	1	0		1
Income from consolidated investment management funds		27	54	3	43		39
Net interest revenue
Interest revenue		820	943	1,942	3,333		5,827
Interest expense		117	163	1,212	1,036		3,454
Net interest revenue		703	780	730	2,297		2,373
Total revenue		3,847	4,010	3,861	11,965		11,684
Provision for credit losses		9	143	(16)	321	[1]	(17)	[1]
Noninterest expense
Staff		1,466	1,464	1,479	4,412		4,424
Professional, legal and other purchased services		355	337	316	1,022		978
Software and equipment		340	345	309	1,011		896
Net occupancy		136	137	138	408		413
Sub-custodian and clearing		119	120	111	344		331
Distribution and servicing		85	85	97	261		282
Bank assessment charges		30	35	31	100		93
Business development		17	20	47	79		148
Amortization of intangible assets		26	26	30	78		89
Other		107	117	32	364		282
Total noninterest expense		2,681	2,686	2,590	8,079		7,936
Income
Income before income taxes		1,157	1,181	1,287	3,565		3,765
Provision for income taxes		213	216	246	694		747
Net income		944	965	1,041	2,871		3,018
Net (income) attributable to noncontrolling interests related to consolidated investment management funds		(7)	(15)	(3)	(4)		(17)
Net income applicable to shareholders of The Bank of New York Mellon Corporation		937	950	1,038	2,867		3,001
Preferred stock dividends		(61)	(49)	(36)	(146)		(120)
Net income applicable to common shareholders of The Bank of New York Mellon Corporation		876	901	1,002	2,721		2,881
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		876	901	1,002	2,721		2,881
Less: Earnings allocated to participating securities		1	1	3	5		12
Net income applicable to common shareholders of The Bank of New York Mellon Corporation after required adjustment for the calculation of basic and diluted earnings per common share		$ 875	$ 900	$ 999	$ 2,716		$ 2,869
Average common shares and equivalents outstanding of The Bank of New York Mellon Corporation
Basic (shares)		889,499	889,020	933,264	891,050		949,035
Common stock equivalents (shares)		2,173	2,044	3,811	2,522		4,484
Less: Participating securities (shares)		(603)	(503)	(1,398)	(779)		(1,643)
Diluted (shares)		891,069	890,561	935,677	892,793		951,876
Anti-dilutive securities (shares)	[2]	1,485	1,578	3,701	1,828		4,269
Earnings per share applicable to the common shareholders of The Bank of New York Mellon Corporation
Basic (usd per share)		$ 0.98	$ 1.01	$ 1.07	$ 3.05		$ 3.02
Diluted (usd per share)		$ 0.98	$ 1.01	$ 1.07	$ 3.04		$ 3.01
[1]	In the first quarter of 2020, we adopted new accounting guidance included in ASU 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments, on a prospective basis. See Note 2 of the Notes to Consolidated Financial Statements for additional information.
[2]	Represents stock options, 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.

Consolidated Comprehensive Inco

Consolidated Comprehensive Income Statement (unaudited) - USD ($) $ in Millions		3 Months Ended			9 Months Ended
		Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income		$ 944	$ 965	$ 1,041	$ 2,871	$ 3,018
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments		331	115	(276)	77	(237)
Unrealized gain on assets available-for-sale:
Unrealized gain arising during the period		233	753	63	1,169	589
Reclassification adjustment		(6)	(7)	1	(20)	(5)
Total unrealized gain on assets available-for-sale		227	746	64	1,149	584
Defined benefit plans:
Net (loss) arising during the period		0	0	0	0	(9)
Amortization of prior service credit, net loss and initial obligation included in net periodic benefit cost		20	19	10	57	30
Total defined benefit plans		20	19	10	57	21
Net unrealized gain (loss) on cash flow hedges		8	4	(6)	1	(1)
Total other comprehensive income (loss), net of tax	[1]	586	884	(208)	1,284	367
Total comprehensive income		1,530	1,849	833	4,155	3,385
Net (income) attributable to noncontrolling interests		(7)	(15)	(3)	(4)	(17)
Other comprehensive (income) loss attributable to noncontrolling interests		(2)	0	3	0	1
Comprehensive income applicable to shareholders of The Bank of New York Mellon Corporation		1,521	1,834	833	4,151	3,369
Other comprehensive (loss) income attributable to The Bank of New York Mellon Corporation shareholders		$ 584	$ 884	$ (205)	$ 1,284	$ 368
[1]	Other comprehensive income (loss) attributable to The Bank of New York Mellon Corporation shareholders was $584 million for the quarter ended Sept. 30, 2020, $884 million for the quarter ended June 30, 2020, $(205) million for the quarter ended Sept. 30, 2019, $1,284 million for the nine months ended Sept. 30, 2020 and $368 million for the nine months ended Sept. 30, 2019.

Consolidated Balance Sheet (una

Consolidated Balance Sheet (unaudited) - USD ($) $ in Millions		Sep. 30, 2020		Dec. 31, 2019
Securities:
Held-to-maturity, at amortized cost, net of allowance for credit losses of less than $1 at Sept. 30, 2020 (fair value of $47,458 and $34,805)		$ 46,096		$ 34,483
Available-for-sale, at fair value (amortized cost of $105,684 and $87,435, net of allowance for credit losses of $12 at Sept 30, 2020)		109,243		88,550
Loans		55,491		54,953
Allowance for credit losses		(460)		(216)
Goodwill		17,357		17,386
Intangible assets		3,026		3,107
Other assets, net of allowance for credit losses on accounts receivable of $5 at Sept. 30, 2020 (includes $527 and $419, at fair value)		20,779		20,221
Total assets		428,398		381,508
Deposits:
Total liabilities		383,051		339,780
Temporary equity
Redeemable noncontrolling interests		179		143
Permanent equity
Preferred stock – par value $0.01 per share; authorized 100,000,000 shares; issued 45,826 and 35,826 shares		4,532		3,542
Common stock – par value $0.01 per share; authorized 3,500,000,000 shares; issued 1,381,650,891 and 1,374,443,376 shares		14		14
Additional paid-in capital		27,741		27,515
Retained earnings		33,821		31,894
Accumulated other comprehensive loss, net of tax		(1,359)		(2,638)
Less: Treasury stock of 495,515,086 and 473,760,338 common shares, at cost		(19,832)		(18,844)
Total The Bank of New York Mellon Corporation shareholders’ equity		44,917		41,483
Nonredeemable noncontrolling interests of consolidated investment management funds		251		102
Total permanent equity	[1]	45,168	[2]	41,585
Total liabilities, temporary equity and permanent equity		428,398		381,508
Investment Management funds
Securities:
Trading assets		579		229
Assets of consolidated investment management funds, at fair value		588		245
Deposits:
Liabilities of consolidated investment management funds, at fair value		4		1
Operating segments
Assets
Cash and due from banks, net of allowance for credit losses of $5 at Sept. 30, 2020	[3]	4,104		4,830
Interest-bearing deposits with the Federal Reserve and other central banks		106,185		95,042
Interest-bearing deposits with banks, net of allowance for credit losses of $4 at Sept. 30, 2020 (includes restricted of $2,891 and $2,437)	[3]	19,027		14,811
Federal funds sold and securities purchased under resale agreements	[3]	29,647		30,182
Securities:
Held-to-maturity, at amortized cost, net of allowance for credit losses of less than $1 at Sept. 30, 2020 (fair value of $47,458 and $34,805)	[3]	46,096		34,483
Available-for-sale, at fair value (amortized cost of $105,684 and $87,435, net of allowance for credit losses of $12 at Sept 30, 2020)	[3]	109,243		88,550
Total securities		155,339		123,033
Trading assets		13,074		13,571
Loans		55,491		54,953
Allowance for credit losses	[3]	(325)		(122)
Net loans		55,166		54,831
Premises and equipment		3,617		3,625
Accrued interest receivable		489		624
Goodwill		17,357		17,386
Intangible assets		3,026		3,107
Other assets, net of allowance for credit losses on accounts receivable of $5 at Sept. 30, 2020 (includes $527 and $419, at fair value)	[3]	20,779		20,221
Total assets		427,810		381,263
Deposits:
Noninterest-bearing (principally U.S. offices)		79,470		57,630
Interest-bearing deposits in U.S. offices		111,703		101,542
Interest-bearing deposits in non-U.S. offices		105,139		100,294
Total deposits		296,312		259,466
Federal funds purchased and securities sold under repurchase agreements		15,907		11,401
Trading liabilities		6,084		4,841
Payables to customers and broker-dealers		23,514		18,758
Commercial paper		671		3,959
Other borrowed funds		420		599
Accrued taxes and other expenses		5,347		5,642
Other liabilities (including allowance for credit losses on lending-related commitments of $135 and $94, also includes $997 and $607, at fair value)	[3]	8,671		7,612
Long-term debt (includes $400 and $387, at fair value)		26,121		27,501
Total liabilities		383,047		339,779
Operating segments | Investment Management funds
Securities:
Assets of consolidated investment management funds, at fair value		588		245
Deposits:
Liabilities of consolidated investment management funds, at fair value		$ 4		$ 1
[1]	Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $37,941 million at Dec. 31, 2019 and $40,385 million at Sept. 30, 2020.
[2]	Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $39,165 million at June 30, 2020 and $40,385 million at Sept. 30, 2020.
[3]	In the first quarter of 2020, we adopted new accounting guidance included in ASU 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments, on a prospective basis. 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	Sep. 30, 2020	Dec. 31, 2019
Restricted cash	$ 3,000	$ 2,000
Debt securities, held-to-maturity, fair value	47,458	34,805
Debt securities, available-for-sale, allowance for credit loss	12
Debt securities, available-for-sale, amortized cost	105,684	87,435
Long-term debt, fair value	$ 400	$ 387
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)	45,826	35,826
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)	1,381,650,891	1,374,443,376
Treasury stock, common shares (shares)	495,515,086	473,760,338
Operating segments
Cash and due from banks, allowance for credit loss	$ 5
Interest-bearing deposits with banks, allowance for credit losses	4
Restricted cash	2,891	$ 2,437
Debt securities, held-to-maturity, allowance for credit loss (less than)	1
Debt securities, held-to-maturity, fair value	47,458	34,805
Debt securities, available-for-sale, allowance for credit loss	12
Debt securities, available-for-sale, amortized cost	105,684	87,435
Other assets, allowance for credit loss on accounts receivable	5
Other assets, fair value	527	419
Allowance for credit losses on lending related commitments	135	94
Other liabilities, fair value	997	607
Long-term debt, fair value	$ 400	$ 387

Consolidated Statement of Cash

Consolidated Statement of Cash Flows (unaudited) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019
Operating activities
Net income		$ 2,871	$ 3,018
Net (income) attributable to noncontrolling interests		(4)	(17)
Net income applicable to shareholders of The Bank of New York Mellon Corporation		2,867	3,001
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Provision for credit losses	[1]	321	(17)
Pension plan contributions		(18)	(30)
Depreciation and amortization		1,175	971
Deferred tax (benefit)		(351)	(185)
Net securities (gains)		(27)	(7)
Change in trading assets and liabilities		1,736	(1,880)
Change in accruals and other, net		200	714
Net cash provided by operating activities		5,903	2,567
Investing activities
Change in interest-bearing deposits with banks		(3,808)	(1,503)
Change in interest-bearing deposits with the Federal Reserve and other central banks		(9,775)	(7,171)
Purchases of securities held-to-maturity		(23,507)	(5,390)
Paydowns of securities held-to-maturity		6,291	3,501
Maturities of securities held-to-maturity		5,477	2,274
Purchases of securities available-for-sale		(56,860)	(33,929)
Sales of securities available-for-sale		10,824	7,482
Paydowns of securities available-for-sale		7,300	5,260
Maturities of securities available-for-sale		21,113	20,006
Net change in loans		(537)	1,478
Sales of loans and other real estate		10	147
Change in federal funds sold and securities purchased under resale agreements		525	3,071
Net change in seed capital investments		20	68
Purchases of premises and equipment/capitalized software		(956)	(1,112)
Other, net		(417)	588
Net cash (used for) investing activities		(44,300)	(5,230)
Financing activities
Change in deposits		35,736	13,207
Change in federal funds purchased and securities sold under repurchase agreements		4,299	(2,447)
Change in payables to customers and broker-dealers		4,627	(1,332)
Change in other borrowed funds		(183)	(2,422)
Change in commercial paper		(3,288)	1,599
Net proceeds from the issuance of long-term debt		2,245	2,246
Repayments of long-term debt		(4,400)	(4,250)
Proceeds from the exercise of stock options		36	51
Issuance of common stock		9	19
Issuance of preferred stock		990	0
Treasury stock acquired		(988)	(2,286)
Common cash dividends paid		(838)	(834)
Preferred cash dividends paid		(146)	(120)
Other, net		36	23
Net cash provided by financing activities		38,135	3,454
Effect of exchange rate changes on cash		(10)	(57)
Change in cash and due from banks and restricted cash
Change in cash and due from banks and restricted cash		(272)	734
Cash and due from banks and restricted cash at beginning of period		7,267	8,258
Cash and due from banks and restricted cash at end of period		6,995	8,992
Cash and due from banks and restricted cash at end of period		6,995	8,992
Supplemental disclosures
Interest paid		1,166	3,528
Income taxes paid		1,112	697
Income taxes refunded		$ 23	$ 445
[1]	In the first quarter of 2020, we adopted new accounting guidance included in ASU 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments, on a prospective basis. 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	Non-redeemable noncontrolling interests of consolidated investment management funds	Redeemable non- controlling interests/ temporary equity	Cumulative Effect, Period Of Adoption, Adjustment	Cumulative Effect, Period Of Adoption, AdjustmentRetained earnings	Cumulative Effect, Period Of Adoption, AdjustmentAccumulated other comprehensive (loss), net of tax	Cumulative Effect, Period of Adoption, Adjusted Balance	Cumulative Effect, Period of Adoption, Adjusted BalancePreferred stock	Cumulative Effect, Period of Adoption, Adjusted BalanceCommon stock	Cumulative Effect, Period of Adoption, Adjusted BalanceAdditional paid-in capital	Cumulative Effect, Period of Adoption, Adjusted BalanceRetained earnings	Cumulative Effect, Period of Adoption, Adjusted BalanceAccumulated other comprehensive (loss), net of tax	Cumulative Effect, Period of Adoption, Adjusted BalanceTreasury stock	Cumulative Effect, Period of Adoption, Adjusted BalanceNon-redeemable noncontrolling interests of consolidated investment management funds	Cumulative Effect, Period of Adoption, Adjusted BalanceRedeemable non- controlling interests/ temporary equity
Beginning balance at Dec. 31, 2018	$ 40,739	[1]	$ 3,542	$ 14	$ 27,118	$ 28,652	$ (3,171)	$ (15,517)	$ 101	$ 129	$ 0	$ 90	$ (90)	$ 40,739	$ 3,542	$ 14	$ 27,118	$ 28,742	$ (3,261)	$ (15,517)	$ 101	$ 129
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued to shareholders of noncontrolling interests										52
Redemption of subsidiary shares from noncontrolling interests										(7)
Other net changes in noncontrolling interests	108				23				85	(26)
Net income	3,018					3,001			17
Other comprehensive (loss) income attributable to The Bank of New York Mellon Corporation shareholders	368						368
Other comprehensive income (loss)	(1)									(1)
Dividends:
Common stock	(834)					(834)
Preferred stock	(120)					(120)
Repurchase of common stock	(2,286)							(2,286)
Common stock issued under employee benefit plans	22				22
Direct stock purchase and dividend reinvestment plan	11				11
Stock awards and options exercised	297				297
Ending balance at Sep. 30, 2019	$ 41,323	[1],[2]	3,542	14	27,471	30,789	(2,893)	(17,803)	203	147
Dividends:
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201602Member
Beginning balance at Dec. 31, 2018	$ 40,739	[1]	3,542	14	27,118	28,652	(3,171)	(15,517)	101	129	0	90	(90)	40,739	3,542	14	27,118	28,742	(3,261)	(15,517)	101	129
Ending balance at Dec. 31, 2019	$ 41,585	[3]	3,542	14	27,515	31,894	(2,638)	(18,844)	102	143	40	45	(5)	41,625	3,542	14	27,515	31,939	(2,643)	(18,844)	102	143
Dividends:
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201613Member
Beginning balance at Jun. 30, 2019	$ 41,699	[2]	3,542	14	27,406	30,081	(2,688)	(16,822)	166	136
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued to shareholders of noncontrolling interests										16
Other net changes in noncontrolling interests	36				2				34	(2)
Net income	1,041					1,038			3
Other comprehensive (loss) income attributable to The Bank of New York Mellon Corporation shareholders	(205)						(205)
Other comprehensive income (loss)	(3)									(3)
Dividends:
Common stock	(294)					(294)
Preferred stock	(36)					(36)
Repurchase of common stock	(981)							(981)
Common stock issued under employee benefit plans	6				6
Stock awards and options exercised	57				57
Ending balance at Sep. 30, 2019	41,323	[1],[2]	3,542	14	27,471	30,789	(2,893)	(17,803)	203	147
Beginning balance at Dec. 31, 2019	41,585	[3]	3,542	14	27,515	31,894	(2,638)	(18,844)	102	143	$ 40	$ 45	$ (5)	$ 41,625	$ 3,542	$ 14	$ 27,515	$ 31,939	$ (2,643)	$ (18,844)	$ 102	$ 143
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued to shareholders of noncontrolling interests										55
Redemption of subsidiary shares from noncontrolling interests										(17)
Other net changes in noncontrolling interests	140				(5)				145	(2)
Net income	2,871					2,867			4
Other comprehensive (loss) income attributable to The Bank of New York Mellon Corporation shareholders	1,284						1,284
Other comprehensive income (loss)	0									0
Dividends:
Common stock	(839)					(839)
Preferred stock	(146)					(146)
Repurchase of common stock	(988)							(988)
Common stock issued under employee benefit plans	21				21
Preferred stock issued	990		990
Stock awards and options exercised	210				210
Ending balance at Sep. 30, 2020	45,168	[3],[4]	4,532	14	27,741	33,821	(1,359)	(19,832)	251	179
Beginning balance at Mar. 31, 2020	41,239	[5]	3,542	14	27,644	32,601	(2,827)	(19,829)	94	140
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued to shareholders of noncontrolling interests										17
Other net changes in noncontrolling interests	3				0				3	0
Net income	965					950			15
Other comprehensive (loss) income attributable to The Bank of New York Mellon Corporation shareholders	884						884
Other comprehensive income (loss)	0									0
Dividends:
Common stock	(278)					(278)
Preferred stock	(49)					(49)
Repurchase of common stock	(3)							(3)
Common stock issued under employee benefit plans	6				6
Preferred stock issued	990		990
Stock awards and options exercised	52				52
Ending balance at Jun. 30, 2020	43,809	[4],[5]	4,532	14	27,702	33,224	(1,943)	(19,832)	112	157
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued to shareholders of noncontrolling interests										21
Redemption of subsidiary shares from noncontrolling interests										(1)
Other net changes in noncontrolling interests	132				0				132	0
Net income	944					937			7
Other comprehensive (loss) income attributable to The Bank of New York Mellon Corporation shareholders	584						584
Other comprehensive income (loss)	2									2
Dividends:
Common stock	(279)					(279)
Preferred stock	(61)					(61)
Common stock issued under employee benefit plans	6				6
Stock awards and options exercised	33				33
Ending balance at Sep. 30, 2020	$ 45,168	[3],[4]	$ 4,532	$ 14	$ 27,741	$ 33,821	$ (1,359)	$ (19,832)	$ 251	$ 179
[1]	Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $37,096 million at Dec. 31, 2018 and $37,578 million at Sept. 30, 2019.
[2]	Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $37,991 million at June 30, 2019 and $37,578 million at Sept. 30, 2019.
[3]	Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $37,941 million at Dec. 31, 2019 and $40,385 million at Sept. 30, 2020.
[4]	Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $39,165 million at June 30, 2020 and $40,385 million at Sept. 30, 2020.
[5]	Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $37,603 million at March 31, 2020 and $39,165 million at June 30, 2020.

Consolidated Statement of Cha_2

Consolidated Statement of Changes in Equity (unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018
Dividends on common stock, cash paid (usd per share)	$ 0.31	$ 0.31	$ 0.31	$ 0.93	$ 0.87
The Bank of New York Mellon Corporation shareholders’ equity	$ 44,917			$ 44,917			$ 41,483
Common stock
The Bank of New York Mellon Corporation shareholders’ equity	$ 40,385	$ 39,165	$ 37,578	$ 40,385	$ 37,578	$ 37,603	$ 37,941	$ 37,991	$ 37,096

Basis of presentation

Basis of presentation	9 Months Ended
	Sep. 30, 2020
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 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 in our 2019 Annual Report. The accompanying consolidated financial statements are unaudited. In the opinion of management, all adjustments necessary 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 2019 Annual Report. Certain immaterial reclassifications have been made to prior periods to place them on a basis comparable with the current period presentation. Use of estimates

Accounting changes and new acco

Accounting changes and new accounting guidance	9 Months Ended
	Sep. 30, 2020
Accounting Policies [Abstract]
Accounting changes and new accounting guidance	Accounting changes and new accounting guidance The following accounting guidance was adopted in the first quarter of 2020. Accounting Standards Update (“ASU”) 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments In June 2016, the Financial Accounting Standards Board (“FASB”) issued an ASU, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments . This ASU introduces a new current expected credit losses model, which applies to financial assets subject to credit losses and measured at amortized cost, including held-to-maturity securities and certain off-balance sheet credit exposures. The guidance also changes current practice for the impairment model for available-for-sale debt securities by requiring the use of an allowance to record estimated credit losses and subsequent recoveries. The standard requires a cumulative effect of initial application to be recognized in retained earnings at the date of initial application. In conjunction with adopting the new standard, we developed expected credit loss models and approaches that include consideration of multiple forecast scenarios and other methodologies. On Jan. 1, 2020, we adopted this new accounting guidance on a prospective basis and recognized a $45 million after-tax increase in retained earnings primarily attributable to a reduction to the allowance for credit losses for our commercial lending portfolios. The comparative financial information for prior periods has not been restated. See the Consolidated Balance Sheet and Notes 4 and 5 for the disclosures required by this ASU. The table below presents the reconciliation of the allowance for credit losses (pre-tax). Allowance for credit losses (in millions) Allowance for credit losses – Dec. 31, 2019 $ 216 Impact of adopting ASU 2016-13: Securities 7 Loans (a) (69) Other 3 Total impact of adoption of ASU 2016-13 (59) Reclassification of credit-related reserves on accounts receivable 4 Allowance for credit losses – Jan. 1, 2020 $ 161 (a) Includes $48 million related to loans and $21 million for lending-related commitments. Significant accounting policies Loans Loans are reported at amortized cost, net of any unearned income and deferred fees and costs. Certain loan origination and upfront commitment fees, as well as certain direct loan origination and commitment costs, are deferred and amortized as a yield adjustment over the lives of the related loans. Loans held for sale are carried at the lower of cost or fair value. Troubled debt restructuring/loan modifications A modified loan is considered a troubled debt restructuring (“TDR”) if the debtor is experiencing financial difficulties and the creditor grants a concession to the debtor that would not otherwise be considered. A TDR may include a transfer of real estate or other assets from the debtor to the creditor, or a modification of the term of the loan. Credit losses related to TDRs are accounted for under an individual evaluation methodology (see “Allowance for credit losses” below). Credit losses for anticipated TDRs are accounted for similarly to TDRs and are identified when there is a reasonable expectation that a TDR will be executed with the borrower and when we expect the modification to affect the timing or amount of payments and/or the payment term. Due to the coronavirus pandemic, there have been two forms of relief provided for classifying loans as TDRs: The Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”) and the Interagency Guidance (as defined below). Financial institutions may account for eligible loan modifications either under the CARES Act or the Interagency Guidance. The Company has elected to apply both the CARES Act and the Interagency Guidance, as applicable, in providing borrowers with loan modification relief in response to the coronavirus pandemic. The CARES Act, which became law on March 27, 2020, provides that financial institutions may, subject to certain conditions, elect to temporarily suspend the U.S. GAAP requirements with respect to loan modifications related to the coronavirus pandemic that were current as of Dec. 31, 2019 and that would otherwise be identified and treated as TDRs. This TDR relief is applicable to modifications that were made from March 1, 2020 until the earlier of Dec. 31, 2020 or 60 days from the date the national emergency related to the coronavirus pandemic officially ends. Various banking regulators issued guidance in the April 7, 2020 “Interagency Statement on Loan Modifications and Reporting for Financial Institutions Working with Customers Affected by the Coronavirus (revised)” (“Interagency Guidance”) on loan modification treatment pursuant to which financial institutions can apply the U.S. GAAP requirements for loan modifications. In accordance with this guidance, a loan modification is not considered a TDR if the modification is related to the coronavirus pandemic, the borrower had been current when the modification program was implemented, and the modification includes payment deferrals for not more than six months. Nonperforming assets Commercial loans are placed on nonaccrual status when principal or interest is past due 90 days or more, or when there is reasonable doubt that interest or principal will be collected. When a first or second lien residential mortgage loan reaches 90 days delinquent, it is subject to an individual evaluation of credit loss and placed on nonaccrual status. When a loan is placed on nonaccrual status, previously accrued and uncollected interest is reversed against current period interest revenue. Interest receipts on nonaccrual loans are recognized as interest revenue or are applied to principal when we believe the ultimate collectability of principal is in doubt. Nonaccrual loans generally are restored to an accrual basis when principal and interest become current and remain current for a specified period. “Allowance for credit losses” below provides additional information regarding the individual evaluation of credit losses for nonperforming loans. Allowance for credit losses The accounting policy for estimating credit losses related to financial assets measured at amortized cost, including loans and lending-related commitments changed beginning in the first quarter of 2020 as a result of the adoption of ASU 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments . This ASU also included targeted amendments with respect to credit losses for available-for-sale debt securities. The accounting policy for determining the allowances has been identified as a “critical accounting estimate” as it requires us to make numerous complex and subjective estimates and assumptions relating to amounts which are judgmental and inherently uncertain. Credit quality is monitored by management and is reflected within the allowance for credit losses. The allowance represents management’s estimate of expected credit losses over the expected contractual life of the financial instruments as of the balance sheet date. The allowance methodology is designed to provide procedural discipline in assessing the appropriateness of the allowance. A quantitative methodology and qualitative framework is used to estimate the allowance for credit losses. The qualitative framework is described in further detail within “Allowance for credit losses - Other” below. The quantitative component of our estimate uses models and methodologies that categorize financial assets based on product type, collateral type, and other credit trends and risk characteristics, including relevant information about past events, current conditions and reasonable and supportable forecasts of future economic conditions that affect the collectability of the recorded amounts. The allowance may be determined using various methods, including discounted cash flow methods, loss-rate methods, probability of default methods or other methods that we determine to be appropriate. We estimate our expected credit losses using the probability of default method for the majority of our financial assets. We measure expected credit losses of financial assets on a collective (pool) basis when similar risk characteristics exist. For a financial asset that does not share risk characteristics with other assets, expected credit losses are measured based on an individual evaluation method. In our estimate, with the exception of our small home equity line of credit portfolio, available-for-sale debt securities, and individually evaluated financial assets, we utilize a multi-scenario macroeconomic forecast which includes a weighting of baseline, stronger near-term growth and moderate recession scenarios. This approach allows us to develop our estimate using a wide span of economic input variables. Our baseline scenario reflects a view on likely performance of each global region and the other two scenarios are designed relative to the baseline scenario. The scenarios include both a reasonable and supportable forecast period as well as a reversion period. The reasonable and supportable forecast is typically over a two- to three-year horizon, followed by a reversion period in which the economic data reverts to long-term historical experience. In general, the forecasts across the alternative economic scenarios tend to revert toward the long-term trends after the forecast period, which is the period in which the confidence interval is considered reasonable and supportable. The speed at which the scenario specific forecasts revert is based on observed historical patterns of mean reversion that are reflected in our model parameter estimates. Certain macroeconomic variables such as unemployment or home prices take longer to revert after a contraction, though specific recovery times are scenario-specific. Reversion will usually take longer the further away the scenario specific forecast is from the historical mean. On a quarterly basis, within a developed governance structure, we update these scenarios for current economic conditions and may adjust the scenario weighting based on our economic outlook. Allowance for credit losses - Loans and lending-related commitments The allowance for credit losses on loans is presented as a valuation allowance to loans, and the allowance for credit losses on lending-related commitments is recorded in other liabilities. The components of the allowance for credit losses on loans and lending- related commitments consist of the following three elements: • a pooled allowance component for higher risk-rated and pass-rated commercial and institutional credits; • a pooled allowance component for residential mortgage loans; and • an asset-specific allowance component involving individually evaluated credits of $1 million or greater. The first element, a pooled allowance component for higher risk-rated and pass-rated commercial and institutional credits, is based on our expected credit loss model. Individual credit analyses are performed on such loans before being assigned a credit rating. All borrowers are collectively evaluated based on their credit rating. The loss expected in each loan incorporates the borrower’s credit rating, facility rating and maturity. The loss given default, derived from the facility rating, incorporates a recovery expectation, and for unfunded lending exposures, an estimate of the use of the facility at default (usage given default). The borrower’s probability of default is derived from the associated credit rating. For each of the different parameters, specific credit models are developed for each segment of our portfolio, including commercial loans and lease financing, commercial real estate, financial institutions, and other. Segmentation is established based on risk characteristics of the loans and how risk is monitored. We use both internal and external data in the development of these parameters. In estimating the term of the exposures and resulting effect on the measurement of expected credit loss, we consider the impact of potential prepayments as well as the effect of borrower extension options. Borrower ratings are reviewed at least annually and are periodically mapped to third-party databases, including rating agency and default and recovery databases, to ensure ongoing consistency and validity. Higher risk-rated loans and lending-related commitments are reviewed quarterly. The second element, a pooled allowance component for residential mortgage loans, is determined by first segregating our mortgage pools into two categories: (i) our wealth management mortgages and (ii) our legacy mortgage portfolio disclosed as other residential mortgages. We then apply models to each portfolio to predict prepayments, default rates and loss severity. We consider historical loss experience and use a loan-level, multi-period default model which further segments each portfolio by product type including first lien fixed rate mortgages, first lien adjustable rate mortgages, second lien mortgages, and interest-only mortgages. We calculate the mortgage loss up to loan contractual maturity and embed a reasonable and supportable forecast and macroeconomic variable inputs which are described above. For home equity lines of credit, probability of default and loss given default are based on external data from third-party databases due to the small size of the portfolio and limited internal data. Our legacy mortgage portfolio and home equity line of credit portfolios represent small sub-segments of our mortgage loans. The third element, individually evaluated credits, is based on individual analysis of loans of $1 million and greater which no longer share the risk characteristics with other loans. Factors we consider in measuring the extent of expected credit loss include the payment status, collateral value, the borrower’s financial condition, guarantor support, the probability of collecting scheduled principal and interest payments when due, anticipated modifications of payment structure or term for troubled borrowers, and recoveries if they can be reasonably estimated. We measure the expected credit loss as the difference between the amortized cost basis in the loan and the present value of the expected future cash flows from the borrower which is generally discounted at the loan’s effective interest rate, or the fair value of the collateral, if the loan is collateral dependent. We generally consider nonperforming loans as well as loans that have been or are anticipated to be modified under a troubled debt restructuring for individual evaluation given the risk characteristics of such loans. Allowance for credit losses - Securities - Debt When estimating expected credit losses, we segment our available-for-sale and held-to-maturity debt securities portfolios by major asset class. This is influenced by whether the security is structured or non-structured (i.e., direct obligation), as well as the issuer type. Debt securities are classified as available-for-sale securities when we intend to hold the securities for an indefinite period of time or when the securities may be used for tactical asset/liability management purposes and may be sold from time to time to effectively manage interest rate exposure, prepayment risk and liquidity needs. Available-for-sale securities are measured at fair value. The difference between fair value and amortized cost represents the unrealized gains or losses on assets classified as available-for-sale, and is recorded net of tax as an addition to, or deduction from, other comprehensive income, unless we determine that this difference or a portion thereof represents an expected credit loss. If we determine that a credit loss exists, the amount is recognized as an allowance for credit losses in securities - available-for sale, with a corresponding adjustment to the provision for credit losses. We evaluate credit losses at the individual security level and do not recognize credit losses if the fair value exceeds amortized cost, and if we determine that a credit loss exists, we limit the recognition of the loss to the difference between fair value and amortized cost. In our determination of whether an expected credit loss exists, we routinely conduct periodic reviews and examine various quantitative and qualitative factors that are unique to each portfolio, including the severity of the unrealized loss position, agency rating, credit enhancement, cash flow deterioration and other factors. The measurement of an expected credit loss is then based on the best estimate of the present value of cash flows to be collected from the debt security. Generally, cash flows are discounted at the effective interest rate implicit in the debt security. Changes to the present value of cash flows due to the passage of time are recognized within the allowance for credit losses. We estimate expected credit losses for held-to-maturity debt securities using a similar methodology as described in the first allowance element within “Allowance for credit losses - Loans and lending-related commitments” above. The allowance for credit losses on held-to-maturity debt securities are recorded in securities - held-to-maturity. The components of the credit loss calculation for each major portfolio or asset class include a probability of default and loss given default and their values depend on the forecast behavior of variables in the macroeconomic environment. For structured debt securities, we estimated expected credit losses at the individual security level and use a cash flow model to project principal losses. Generally, cash flows are discounted at the effective interest rate implicit in the debt security. The difference is reflected in the allowance for credit losses, and changes to the present value of cash flows due to the passage of time are recognized within the allowance for credit losses. We currently do not require an estimate of expected credit losses to be measured and recorded for U.S. Treasury securities, agency debt securities, as well as other debt securities that meet certain conditions that are based on a combination of factors such as guarantees, credit ratings, and other credit quality factors. These assets are monitored within our established governance structure on a recurring basis to determine if any changes are warranted. Allowance for credit losses – Other financial instruments We also estimate expected credit losses associated with margin loans, reverse repurchase agreements, security lending indemnifications, and deposits with third-party financial institutions using a similar methodology as described in the first allowance element within “Allowance for credit losses - Loans and lending-related commitments” above. The allowance for credit losses on reverse repurchase agreements are recorded in federal funds sold and securities purchased under resale agreements; the allowance for credit losses on securities lending indemnifications is recorded in other liabilities and the allowance for credit losses on deposits with third-party financial institutions is recorded in cash and due from banks or interest-bearing deposits with banks. Our reverse repurchase agreements are short term and subject to continuous overcollateralization by our counterparties and timely collateral replenishment, when necessary. As a result, we estimate the expected credit loss related to the uncollateralized portion of the asset at the balance sheet date, if any, and when there is a reasonable expectation that the counterparty will not replenish the collateral in compliance with the terms of the repurchase agreement. This method is also applied to margin lending arrangements and securities lending indemnifications. Allowance for credit losses - Other We do not apply our credit loss measurement methodologies to accrued interest receivable balances related to our loan, debt securities and deposits with third party financial institutions assets given our nonaccrual policy that requires charge-off of interest receivable when deemed uncollectible. Accrued interest receivable related to these instruments is presented in total with other interest-bearing instruments in the consolidated balance sheet. Accrued interest receivable related to each major loan class is disclosed within our credit quality disclosure in Note 5. Our policy for credit losses related to purchased financial assets requires an evaluation to be performed prior to the effective purchase date to determine if more than an insignificant decline in credit quality has occurred during the period between the origination and purchase date, or, in the case of debt securities, the period between the issuance and purchase date. If we purchase a financial asset with more than insignificant deterioration in credit quality, the measurement of expected credit loss is performed using the methodologies described above, and the credit loss is recorded as an allowance for credit losses on the purchase date. Subsequent to purchase, changes (favorable and unfavorable) in expected cash flows are recognized immediately in net income by adjusting the allowance. We evaluate various factors in the determination of whether a more than an insignificant decline in credit quality has occurred and these factors vary depending upon the type of asset purchased. Such factors include changes in risk rating and/or agency rating, collateral deterioration, payment status, purchase price, credit spreads, and other factors. We did not purchase any such assets during the first nine months of 2020 and did not own such assets as of Sept. 30, 2020. We apply a separate credit loss methodology to accounts receivables to estimate the expected credit losses associated with these short-term receivables which historically have not resulted in significant credit losses. The allowance for credit losses on accounts receivable is reflected in other assets. The qualitative component of our estimate for the allowance for credit losses is intended to capture expected losses that may not have been fully captured in the quantitative component. Through an established governance structure, management determines the qualitative allowance each period based on an evaluation of various internal and environmental factors which include: scenario weighting and sensitivity risk, credit concentration risk, economic conditions and other considerations. We may also make adjustments for idiosyncratic

Acquisitions and dispositions

Acquisitions and dispositions	9 Months Ended
	Sep. 30, 2020
Business Combinations [Abstract]
Acquisitions and dispositions	Acquisitions and dispositions We sometimes structure our acquisitions with both an initial payment and later contingent payments tied to post-closing revenue or income growth. There were no contingent payments in the third quarter of 2020. Contingent payment totaled $3 million in the first nine months of 2020. At Sept. 30, 2020, we are potentially obligated to pay additional consideration which, using reasonable assumptions, could range from $5 million to $10 million over the next two years , but could be higher as certain of the arrangements do not contain a contractual maximum. Transaction in 2019 On Nov. 8, 2019, BNY Mellon, along with the other holders of Promontory Interfinancial Network, LLC (“PIN”), completed the sale of their interests in PIN. BNY Mellon recorded an after-tax gain of $622 million on the sale of this equity investment.

Securities

Securities	9 Months Ended
	Sep. 30, 2020
Securities [Abstract]
Securities	Securities On Jan. 1, 2020, we adopted ASU 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments on a prospective basis. See Note 2 for the significant accounting policy related to securities. The following tables present the amortized cost, the gross unrealized gains and losses and the fair value of securities at Sept. 30, 2020 and Dec. 31, 2019. Securities at Sept. 30, 2020 Gross Fair Amortized cost (in millions) Gains Losses Available-for-sale: Agency RMBS $ 24,262 $ 526 $ 55 $ 24,733 U.S. Treasury 23,166 1,568 1 24,733 Sovereign debt/sovereign guaranteed 13,925 169 1 14,093 Agency commercial mortgage-backed securities (“MBS”) 9,299 646 3 9,942 Supranational 7,069 68 1 7,136 Foreign covered bonds 5,777 64 — 5,841 Collateralized loan obligations (“CLOs”) 4,696 5 44 4,657 Foreign government agencies 3,924 46 — 3,970 U.S. government agencies 3,300 180 2 3,478 Other asset-backed securities (“ABS”) 2,903 31 4 2,930 Non-agency commercial MBS 2,565 156 10 2,711 Non-agency RMBS (a) 1,793 157 9 1,941 State and political subdivisions 1,661 33 4 1,690 Corporate bonds 988 43 1 1,030 Commercial paper/certificates of deposit (“CDs”) 355 2 — 357 Other debt securities 1 — — 1 Total securities available-for-sale (b)(c) $ 105,684 $ 3,694 $ 135 $ 109,243 Held-to-maturity: Agency RMBS $ 37,086 $ 1,117 $ 10 $ 38,193 U.S. Treasury 3,288 103 — 3,391 U.S. government agencies 2,266 5 4 2,267 Agency commercial MBS 2,041 107 — 2,148 Sovereign debt/sovereign guaranteed 983 41 — 1,024 Commercial paper/CDs 295 — — 295 Non-agency RMBS 70 3 1 72 Supranational 52 1 — 53 State and political subdivisions 15 — — 15 Total securities held-to-maturity $ 46,096 $ 1,377 $ 15 $ 47,458 Total securities $ 151,780 $ 5,071 $ 150 $ 156,701 (a) Includes $512 million that was included in the former Grantor Trust. (b) In the first quarter of 2020, we adopted new accounting guidance included in ASU 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments, on a prospective basis. The amortized cost of available-for-sale securities is net of the allowance for credit loss of $12 million. The allowance for credit loss primarily relates to CLOs. See Note 2 for additional information. (c) Includes gross unrealized gains of $25 million and gross unrealized losses of $49 million recorded in accumulated other comprehensive income related to securities that were transferred from available-for-sale to held-to-maturity. The unrealized gains and losses are primarily related to Agency RMBS and will be amortized into net interest revenue over the contractual lives of the securities. Securities at Dec. 31, 2019 Gross Amortized cost Fair (in millions) Gains Losses Available-for-sale: Agency RMBS $ 27,022 $ 164 $ 143 $ 27,043 U.S. Treasury 14,979 472 20 15,431 Sovereign debt/sovereign guaranteed 12,548 109 11 12,646 Agency commercial MBS 9,231 203 17 9,417 Foreign covered bonds 4,189 15 7 4,197 CLOs 4,078 1 16 4,063 Supranational 3,697 18 6 3,709 Foreign government agencies 2,638 7 2 2,643 Non-agency commercial MBS 2,134 46 2 2,178 Other ABS 2,141 7 5 2,143 U.S. government agencies 1,890 61 2 1,949 Non-agency RMBS (a) 1,038 202 7 1,233 State and political subdivisions 1,017 27 — 1,044 Corporate bonds 832 21 — 853 Other debt securities 1 — — 1 Total securities available-for-sale (b) $ 87,435 $ 1,353 $ 238 $ 88,550 Held-to-maturity: Agency RMBS $ 27,357 $ 292 $ 46 $ 27,603 U.S. Treasury 3,818 28 3 3,843 Agency commercial MBS 1,326 21 3 1,344 U.S. government agencies 1,023 1 2 1,022 Sovereign debt/sovereign guaranteed 756 31 — 787 Non-agency RMBS 80 4 1 83 Foreign covered bonds 79 — — 79 Supranational 27 — — 27 State and political subdivisions 17 — — 17 Total securities held-to-maturity $ 34,483 $ 377 $ 55 $ 34,805 Total securities $ 121,918 $ 1,730 $ 293 $ 123,355 (a) Includes $640 million that was included in the former Grantor Trust. (b) Includes gross unrealized gains of $32 million and gross unrealized losses of $65 million recorded in accumulated other comprehensive income related to securities that were transferred from available-for-sale to held-to-maturity. The unrealized gains and losses are primarily related to Agency RMBS and will be amortized into net interest revenue over the contractual lives of the securities. The following table presents the realized gains, losses and impairments, on a gross basis. Net securities gains (losses) (in millions) 3Q20 2Q20 3Q19 YTD20 YTD19 Realized gross gains $ 10 $ 16 $ 1 $ 38 $ 18 Realized gross losses (1) (7) (1) (11) (10) Recognized gross impairments — — (1) — (1) Total net securities gains (losses) $ 9 $ 9 $ (1) $ 27 $ 7 The following table presents pre-tax net securities gains (losses) by type. Net securities gains (losses) (in millions) 3Q20 2Q20 3Q19 YTD20 YTD19 Foreign government agencies $ 5 $ 2 $ — $ 7 $ — U.S. Treasury 1 1 — 7 4 Supranational — 6 — 6 — Sovereign debt/sovereign guaranteed 1 2 — 3 3 State and political subdivisions — — — — 2 Other 2 (2) (1) 4 (2) Total net securities gains (losses) $ 9 $ 9 $ (1) $ 27 $ 7 Allowance for credit losses - Securities In the first quarter of 2020, we adopted new accounting guidance included in ASU 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments , on a prospective basis. The allowance for credit losses related to securities was $7 million on Jan. 1, 2020 and $12 million at Sept. 30, 2020. The increase reflects additional credit deterioration in the available-for-sale CLO portfolio. For additional information about the review of securities under previous other-than-temporary impairment guidance, refer to Notes 1 and 4, both Notes to Consolidated Financial Statements, in our 2019 Annual Report. Credit quality indicators - Securities At Sept. 30, 2020, the gross unrealized losses on the securities portfolio were primarily attributable to an increase in credit spreads 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, $49 million of the unrealized losses at Sept. 30, 2020 and $65 million at Dec. 31, 2019 reflected in the available-for-sale sections of the tables below relate to certain securities (primarily Agency RMBS) that were transferred in prior periods from available-for-sale to held-to-maturity. The unrealized losses will be amortized into net interest revenue over the contractual lives of the securities. The transfer created a new cost basis for the securities. As a result, if these securities have experienced unrealized losses since the date of transfer, the corresponding fair value and unrealized losses would be reflected in the held-to-maturity sections of the following tables. We do not intend to sell these securities, and it is not more likely than not that we will have to sell these securities. The following table shows 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 Sept. 30, 2020 (a) Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized (in millions) Agency RMBS $ 1,126 $ 3 $ 2,102 $ 52 $ 3,228 $ 55 U.S. Treasury 1,041 1 — — 1,041 1 Sovereign debt/sovereign guaranteed 1,069 1 119 — 1,188 1 Agency commercial MBS 566 1 306 2 872 3 Supranational 1,583 1 127 — 1,710 1 CLOs 3,449 31 579 13 4,028 44 U.S. government agencies 99 2 — — 99 2 Other ABS 675 2 229 2 904 4 Non-agency commercial MBS 358 6 194 4 552 10 Non-agency RMBS (b) 636 3 97 6 733 9 State and political subdivisions 262 4 2 — 264 4 Corporate bonds 173 1 — — 173 1 Total securities available-for-sale (c) $ 11,037 $ 56 $ 3,755 $ 79 $ 14,792 $ 135 (a) Includes $370 million of securities with an unrealized loss of greater than $1 million. (b) Includes $22 million of securities with an unrealized loss of $1 million for less than 12 months and $1 million of securities with an unrealized loss of less than $1 million for 12 months or more that were included in the former Grantor Trust. (c) Includes gross unrealized losses of $49 million 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. The unrealized losses are primarily related to Agency RMBS and will be amortized into net interest revenue over the contractual lives of the securities. There were no gross unrealized losses for less than 12 months. The following table presents the temporarily impaired securities under the disclosure guidance that existed prior to the adoption of ASU 2016-13 and shows 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. Temporarily impaired securities at Dec. 31, 2019 Less than 12 months 12 months or more Total (in millions) Fair Unrealized Fair Unrealized Fair Unrealized Available-for-sale: Agency RMBS $ 8,373 $ 33 $ 5,912 $ 110 $ 14,285 $ 143 U.S. Treasury 1,976 16 766 4 2,742 20 Sovereign debt/sovereign guaranteed 4,045 10 225 1 4,270 11 Agency commercial MBS 1,960 12 775 5 2,735 17 Foreign covered bonds 1,009 4 690 3 1,699 7 CLOs 1,066 2 1,499 14 2,565 16 Supranational 1,336 6 360 — 1,696 6 Foreign government agencies 1,706 2 47 — 1,753 2 Non-agency commercial MBS 525 2 45 — 570 2 Other ABS 456 3 305 2 761 5 U.S. government agencies 377 2 — — 377 2 Non-agency RMBS (a) 101 — 113 7 214 7 State and political subdivisions — — 16 — 16 — Corporate bonds 82 — 21 — 103 — Total securities available-for-sale (b) $ 23,012 $ 92 $ 10,774 $ 146 $ 33,786 $ 238 (a) Includes $2 million of securities with an unrealized loss of less than $1 million for less than 12 months and $2 million of securities with an unrealized loss of less than $1 million for 12 months or more that were included in the former Grantor Trust. (b) Includes gross unrealized losses of $65 million 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. The unrealized losses are primarily related to Agency RMBS and will be amortized into net interest revenue over the contractual lives of the securities. There were no gross unrealized losses for less than 12 months. The following table shows 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 a reduction in the fair value of our securities portfolio. Held-to-maturity securities portfolio at Sept. 30, 2020 (a) Ratings (b) Net unrealized gain BB+ A1+/A2/SP-1+ (dollars in millions) Amortized AAA/ A+/ BBB+/ Not Agency RMBS $ 37,086 $ 1,107 100 % — % — % — % — % — % U.S. Treasury 3,288 103 100 — — — — — U.S. government agencies 2,266 1 100 — — — — — Agency commercial MBS 2,041 107 100 — — — — — Sovereign debt/sovereign guaranteed (c) 983 41 100 — — — — — Commercial paper/CDs 295 — — — — — 100 — Non-agency RMBS 70 2 39 46 2 12 — 1 Supranational 52 1 100 — — — — — State and political subdivisions 15 — 6 2 6 — — 86 Total held-to-maturity securities $ 46,096 $ 1,362 99 % — % — % — % 1 % — % (a) In the first quarter of 2020, we adopted new accounting guidance included in ASU 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments, on a prospective basis. See Note 2 for additional information. (b) Represents ratings by Standard & Poor’s (“S&P”) or the equivalent. (c) Primarily consists of exposure to France, UK and Germany. 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 Sept. 30, 2020 U.S. Treasury U.S. government State and political Other bonds, notes and debentures Mortgage/ (dollars in millions) Amount Yield (a) Amount Yield (a) Amount Yield (a) Amount Yield (a) Amount Yield (a) Total Securities available-for-sale: One year or less $ 4,405 1.11 % $ 25 2.55 % $ 549 1.49 % $ 11,186 0.44 % $ — — % $ 16,165 Over 1 through 5 years 10,546 1.28 1,866 0.85 570 3.16 17,769 0.61 — — 30,751 Over 5 through 10 years 6,517 1.57 1,468 2.51 223 1.88 3,240 0.56 — — 11,448 Over 10 years 3,265 3.11 119 2.06 348 2.22 233 0.62 — — 3,965 Mortgage-backed securities — — — — — — — — 39,327 2.18 39,327 Asset-backed securities — — — — — — — — 7,587 1.72 7,587 Total $ 24,733 1.57 % $ 3,478 1.60 % $ 1,690 2.26 % $ 32,428 0.55 % $ 46,914 2.10 % $ 109,243 Securities held-to-maturity: One year or less $ 785 1.43 % $ — — % $ — — % $ 307 1.99 % $ — — % $ 1,092 Over 1 through 5 years 2,503 1.90 1,253 0.82 2 5.66 946 0.67 — — 4,704 Over 5 through 10 years — — 564 1.13 — — 32 0.92 — — 596 Over 10 years — — 449 2.28 13 4.76 45 0.35 — — 507 Mortgage-backed securities — — — — — — — — 39,197 2.57 39,197 Total $ 3,288 1.79 % $ 2,266 1.19 % $ 15 4.91 % $ 1,330 0.96 % $ 39,197 2.57 % $ 46,096 (a) Yields are based upon the amortized cost of securities. Pledged assets At Sept. 30, 2020, BNY Mellon had pledged assets of $141 billion, including $108 billion pledged as collateral for potential borrowings at the Federal Reserve Discount Window and $5 billion pledged as collateral for borrowing at the Federal Home Loan Bank. The components of the assets pledged at Sept. 30, 2020 included $123 billion of securities, $11 billion of loans, $6 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. At Dec. 31, 2019, BNY Mellon had pledged assets of $118 billion, including $80 billion pledged as collateral for potential borrowing at the Federal Reserve Discount Window and $6 billion pledged as collateral for borrowing at the Federal Home Loan Bank. The components of the assets pledged at Dec. 31, 2019 included $98 billion of securities, $13 billion of loans, $7 billion of trading assets and less than $1 billion of interest-bearing deposits with banks. At Sept. 30, 2020 and Dec. 31, 2019, pledged assets included $23 billion and $29 billion, respectively, for which the recipients were permitted to sell or repledge the assets delivered. At Sept. 30, 2020, we pledged commercial paper and CDs totaling $295 million as collateral to the Federal Reserve Bank of Boston to secure non-recourse borrowings under the Federal Reserve’s Money Market Mutual Fund Liquidity Facility (“MMLF”) program. 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 Sept. 30, 2020 and Dec. 31, 2019, the market value of the securities received that can be sold or repledged was $112 billion and $153 billion, respectively. We routinely sell or repledge these securities through delivery to third parties. As of Sept. 30, 2020 and Dec. 31, 2019, the market value of securities collateral sold or repledged was $80 billion and $107 billion, respectively. Restricted cash and securities

Loans and asset quality

Loans and asset quality	9 Months Ended
	Sep. 30, 2020
Receivables [Abstract]
Loans and asset quality	Loans and asset quality Loans The table below provides the details of our loan portfolio. Loans Sept. 30, 2020 Dec. 31, 2019 (in millions) Domestic: Commercial $ 1,839 $ 1,442 Commercial real estate 5,987 5,575 Financial institutions 4,915 4,852 Lease financings 482 537 Wealth management loans and mortgages 15,805 16,050 Other residential mortgages 423 494 Overdrafts 899 524 Other 1,616 1,167 Margin loans 11,220 11,907 Total domestic 43,186 42,548 Foreign: Commercial 102 347 Commercial real estate 5 7 Financial institutions 6,097 7,626 Lease financings 596 576 Wealth management loans and mortgages 121 140 Other (primarily overdrafts) 3,106 2,230 Margin loans 2,278 1,479 Total foreign 12,305 12,405 Total loans (a) $ 55,491 $ 54,953 (a) Net of unearned income of $285 million at Sept. 30, 2020 and $313 million at Dec. 31, 2019 primarily related to domestic and foreign lease financings. Our loan portfolio consists of three portfolio segments: commercial, lease financings and mortgages. We manage our portfolio at the class level, which consists of six classes of financing receivables: commercial, commercial real estate, financial institutions, lease financings, wealth management loans and mortgages, and other residential mortgages. The following tables are presented for each class of financing receivables and provide additional information about our credit risks. Allowance for credit losses On Jan. 1, 2020, we adopted ASU 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments on a prospective basis. See Note 2 for the significant accounting policy related to allowance for credit losses on loans and lending-related commitments. 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, held-to-maturity securities, available-for-sale securities and accounts receivable. Allowance for credit losses activity for the quarter ended Sept. 30, 2020 Wealth management loans and mortgages Other (in millions) Commercial Commercial Financial Lease Total Beginning balance $ 40 $ 372 $ 16 $ 3 $ 11 $ 12 $ 454 Charge-offs — — — — — — — Recoveries — — — — — 1 1 Net recoveries — — — — — 1 1 Provision (a) (13) 14 (5) — 4 5 5 Ending balance (b) $ 27 $ 386 $ 11 $ 3 $ 15 $ 18 $ 460 Allowance for: Loan losses $ 14 $ 270 $ 7 $ 3 $ 13 $ 18 $ 325 Lending-related commitments 13 116 4 — 2 — 135 Individually evaluated for impairment: Loan balance $ — $ — $ — $ — $ 17 (c) $ — $ 17 Allowance for loan losses — — — — — — — (a) Does not include provision for credit losses related to other financial instruments of $4 million for the third quarter 2020. (b) Includes $8 million of allowance for credit losses related to foreign loans, primarily financial institutions. (c) Includes collateral dependent loans of $17 million with $25 million of collateral at fair value. Allowance for credit losses activity for the quarter ended June 30, 2020 Wealth management loans and mortgages Other (in millions) Commercial Commercial Financial Lease Total Beginning balance $ 26 $ 208 $ 18 $ 13 $ 9 $ 14 $ 288 Charge-offs — — — — — — — Recoveries — — — — — 3 3 Net recoveries — — — — — 3 3 Provision (a) 14 164 (2) (10) 2 (5) 163 Ending balance (b) $ 40 $ 372 $ 16 $ 3 $ 11 $ 12 $ 454 Allowance for: Loan losses $ 23 $ 244 $ 11 $ 3 $ 9 $ 12 $ 302 Lending-related commitments 17 128 5 — 2 — 152 Individually evaluated for impairment: Loan balance $ — $ — $ — $ — $ 18 (c) $ — $ 18 Allowance for loan losses — — — — — — — (a) Does not include provision for credit losses related to other financial instruments of $(20) million for the second quarter 2020. (b) Includes $11 million of allowance for credit losses related to foreign loans, primarily financial institutions. (c) Includes collateral dependent loans of $18 million with $26 million of collateral at fair value. Allowance for credit losses activity for the quarter ended Sept. 30, 2019 Wealth management loans and mortgages Other All Foreign Total (in millions) Commercial Commercial Financial Lease Beginning balance $ 77 $ 72 $ 21 $ 4 $ 20 $ 14 $ — $ 33 $ 241 Charge-offs (1) — — — — — — — (1) Recoveries — — — — — — — — — Net (charge-offs) (1) — — — — — — — (1) Provision (15) 5 — (1) — — — (5) (16) Ending balance $ 61 $ 77 $ 21 $ 3 $ 20 $ 14 $ — $ 28 $ 224 Allowance for: Loan losses $ 10 $ 57 $ 7 $ 3 $ 17 $ 14 $ — $ 19 $ 127 Lending-related commitments 51 20 14 — 3 — — 9 97 Individually evaluated for impairment: Loan balance $ — $ — $ — $ — $ 16 $ — $ — $ — $ 16 Allowance for loan losses — — — — — — — — — Collectively evaluated for impairment: Loan balance $ 1,335 $ 5,292 $ 4,973 $ 559 $ 15,748 $ 520 $ 12,567 (a) $ 13,871 $ 54,865 Allowance for loan losses 10 57 7 3 17 14 — 19 127 (a) Includes $1,247 million of domestic overdrafts, $10,177 million of margin loans and $1,143 million of other loans at Sept. 30, 2019. Allowance for credit losses activity for the nine months ended Sept. 30, 2020 Wealth management loans and mortgages Other Foreign Total (in millions) Commercial Commercial Financial Lease (a) Balance at Dec. 31, 2019 $ 60 $ 76 $ 20 $ 3 $ 20 $ 13 $ 24 $ 216 Impact of adopting ASU 2016-13 (43) 14 (6) — (12) 2 (24) (69) Balance at Jan. 1, 2020 17 90 14 3 8 15 — 147 Charge-offs — — — — — — — — Recoveries — — — — — 4 — 4 Net recoveries — — — — — 4 — 4 Provision (b) 10 296 (3) — 7 (1) — 309 Ending balance $ 27 $ 386 $ 11 $ 3 $ 15 $ 18 $ — $ 460 (a) The allowance related to foreign exposure has been reclassified to financial institutions ($10 million), commercial ($10 million) and lease financings ($4 million). (b) Does not include provision for credit losses related to other financial instruments of $12 million for the nine months ended Sept. 30, 2020. Allowance for credit losses activity for the nine months ended Sept. 30, 2019 Wealth management loans and mortgages Other All Foreign Total (in millions) Commercial Commercial Financial Lease Beginning balance $ 81 $ 75 $ 22 $ 5 $ 21 $ 16 $ — $ 32 $ 252 Charge-offs (12) — — — (1) — — — (13) Recoveries — — — — — 2 — — 2 Net (charge-offs) recoveries (12) — — — (1) 2 — — (11) Provision (8) 2 (1) (2) — (4) — (4) (17) Ending balance $ 61 $ 77 $ 21 $ 3 $ 20 $ 14 $ — $ 28 $ 224 Nonperforming assets The table below presents our nonperforming assets. Nonperforming assets Sept. 30, 2020 Dec. 31, 2019 Recorded investment With an Without an allowance (in millions) Total Nonperforming loans: Other residential mortgages $ 56 $ — $ 56 $ 62 Wealth management loans and mortgages 10 17 27 24 Total nonperforming loans 66 17 83 86 Other assets owned — 1 1 3 Total nonperforming assets $ 66 $ 18 $ 84 $ 89 At Sept. 30, 2020, undrawn commitments to borrowers whose loans were classified as nonaccrual or reduced rate were not material. Past due loans The table below presents our past due loans. Past due loans and still accruing interest Sept. 30, 2020 Dec. 31, 2019 Days past due Total Days past due Total (in millions) 30-59 60-89 ≥90 30-59 60-89 ≥90 Wealth management loans and mortgages $ 20 $ 1 $ — $ 21 $ 22 $ 5 $ — $ 27 Other residential mortgages 7 — — 7 8 3 — 11 Financial institutions — — — — 1 30 — 31 Commercial real estate 9 — — 9 6 12 — 18 Total past due loans $ 36 $ 1 $ — $ 37 $ 37 $ 50 $ — $ 87 Loan modifications Due to the coronavirus pandemic, there have been two forms of relief provided for classifying loans as TDRs: The Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”) and the Interagency Guidance. See Note 2 for additional details on the CARES Act and Interagency Guidance. Financial institutions may account for eligible loan modifications either under the CARES Act or the Interagency Guidance. The Company has elected to apply both the CARES Act and the Interagency Guidance, as applicable, in providing borrowers with loan modification relief in response to the coronavirus pandemic. We modified loans of $106 million in the third quarter of 2020 and $282 million in the second quarter of 2020. Nearly all of the modifications were 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 table below provides information about the credit profile of the loan portfolio by the period of origination. Credit profile of the loan portfolio Sept. 30, 2020 Revolving loans Originated, at amortized cost Amortized cost Converted to term loans - Amortized cost Accrued (in millions) YTD20 2019 2018 2017 2016 Prior to 2016 Total (a) Commercial: Investment grade $ 153 $ 73 $ 96 $ 450 $ 57 $ — $ 893 $ — $ 1,722 Non-investment grade 85 61 7 — — — 66 — 219 Total commercial 238 134 103 450 57 — 959 — 1,941 $ 1 Commercial real estate: Investment grade 611 1,065 542 543 385 430 175 — 3,751 Non-investment grade 160 526 604 159 367 152 244 29 2,241 Total commercial real estate 771 1,591 1,146 702 752 582 419 29 5,992 8 Financial institutions: Investment grade 60 238 47 125 14 165 8,471 — 9,120 Non-investment grade 98 36 — — — — 1,758 — 1,892 Total financial institutions 158 274 47 125 14 165 10,229 — 11,012 13 Wealth management loans and mortgages: Investment grade 31 80 11 149 56 85 7,235 — 7,647 Non-investment grade — — — — — — 63 — 63 Wealth management mortgages 781 1,082 682 1,267 1,622 2,748 34 — 8,216 Total wealth management loans and mortgages 812 1,162 693 1,416 1,678 2,833 7,332 — 15,926 29 Lease financings 126 19 17 10 25 881 — — 1,078 — Other residential mortgages — — — — — 423 — — 423 2 Other loans — — — — — — 1,658 — 1,658 1 Margin loans 3,553 — — — — — 9,945 — 13,498 7 Total loans $ 5,658 $ 3,180 $ 2,006 $ 2,703 $ 2,526 $ 4,884 $ 30,542 $ 29 $ 51,528 $ 61 (a) Excludes overdrafts of $3,963 million. Overdrafts occur on a daily basis primarily in the custody and securities clearance business and are generally repaid within two 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 95% of the exposures meeting the investment grade equivalent criteria of our internal credit rating classification at Sept. 30, 2020. In addition, 75% 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 89% expiring within one year. Wealth management loans and mortgages Wealth management non-mortgage 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 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, including business assets, fixed assets or a modest amount of commercial real estate. For the loans collateralized by other assets, the credit quality of the obligor is carefully analyzed, but we do not consider this portfolio of loans to be investment grade. 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 62% at origination. Delinquency rate is a key indicator of credit quality in the wealth management portfolio. At Sept. 30, 2020, less than 1% of the mortgages were past due. At Sept. 30, 2020, the wealth management mortgage portfolio consisted of the following geographic concentrations: California - 22%; New York - 17%; Massachusetts - 10%; Florida - 8%; and other - 43%. Lease financing At Sept. 30, 2020, the lease financings portfolio consisted of exposures backed by well-diversified assets, primarily large-ticket transportation equipment and real estate. The largest component of our lease residual value exposure is freight-related rail. Assets are both domestic and foreign-based, with primary concentrations in the U.S. and Germany. Other residential mortgages The other residential mortgage portfolio primarily consists of 1-4 family residential mortgage loans and totaled $423 million at Sept. 30, 2020 and $494 million at Dec. 31, 2019. These loans are not typically correlated to external ratings. Included in this portfolio at Sept. 30, 2020 were $76 million of mortgage loans purchased in 2005, 2006 and the first quarter of 2007, of which 19% of the serviced loan balance was at least 60 days delinquent. Overdrafts Overdrafts primarily relate to custody and securities clearance clients and totaled $4.0 billion at Sept. 30, 2020 and $2.7 billion at Dec. 31, 2019. Overdrafts occur on a daily basis and are generally repaid within two 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 $13.5 billion of secured margin loans at Sept. 30, 2020, compared with $13.4 billion at Dec. 31, 2019. 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. Reverse repurchase agreements

Goodwill and intangible assets

Goodwill and intangible assets	9 Months Ended
	Sep. 30, 2020
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. Goodwill by business (in millions) Investment Investment and Wealth Other Consolidated Balance at Dec. 31, 2019 $ 8,332 $ 9,007 $ 47 $ 17,386 Foreign currency translation 21 (50) — (29) Other (a) 47 — (47) — Balance at Sept. 30, 2020 $ 8,400 $ 8,957 $ — $ 17,357 (a) Reflects the transfer of goodwill associated with the Capital Markets business. Goodwill by business (in millions) Investment Investment and Wealth Management Other Consolidated Balance at Dec. 31, 2018 $ 8,333 $ 8,970 $ 47 $ 17,350 Foreign currency translation (45) (57) — (102) Balance at Sept. 30, 2019 $ 8,288 $ 8,913 $ 47 $ 17,248 Intangible assets The tables below provide a breakdown of intangible assets by business. Intangible assets – net carrying amount by business (in millions) Investment Investment and Wealth Management Other Consolidated Balance at Dec. 31, 2019 $ 678 $ 1,580 $ 849 $ 3,107 Amortization (54) (24) — (78) Foreign currency translation 1 (4) — (3) Balance at Sept. 30, 2020 $ 625 $ 1,552 $ 849 $ 3,026 Intangible assets – net carrying amount by business (in millions) Investment Investment and Wealth Management Other Consolidated Balance at Dec. 31, 2018 $ 758 $ 1,613 $ 849 $ 3,220 Amortization (61) (28) — (89) Foreign currency translation (1) (6) — (7) Balance at Sept. 30, 2019 $ 696 $ 1,579 $ 849 $ 3,124 The table below provides a breakdown of intangible assets by type. Intangible assets Sept. 30, 2020 Dec. 31, 2019 (in millions) Gross Accumulated Net Remaining Gross Accumulated Net Subject to amortization: (a) Customer contracts—Investment Services $ 1,482 $ (1,228) $ 254 10 years $ 1,520 $ (1,214) $ 306 Customer relationships—Investment and Wealth Management 711 (563) 148 10 years 712 (544) 168 Other 64 (21) 43 14 years 64 (16) 48 Total subject to amortization 2,257 (1,812) 445 10 years 2,296 (1,774) 522 Not subject to amortization: (b) Tradenames 1,292 N/A 1,292 N/A 1,293 N/A 1,293 Customer relationships 1,289 N/A 1,289 N/A 1,292 N/A 1,292 Total not subject to amortization 2,581 N/A 2,581 N/A 2,585 N/A 2,585 Total intangible assets $ 4,838 $ (1,812) $ 3,026 N/A $ 4,881 $ (1,774) $ 3,107 (a) Excludes fully amortized intangible assets. (b) Intangible assets not subject to amortization have an indefinite life. Estimated annual amortization expense for current intangibles for the next five years is as follows: For the year ended Estimated amortization expense (in millions) 2020 $ 104 2021 81 2022 63 2023 52 2024 45 Impairment testing The goodwill impairment test is performed at least annually at the reporting unit level. Intangible assets not subject to amortization are tested for impairment annually or more often if events or circumstances indicate they may be impaired. BNY Mellon’s three business segments include six reporting units for which goodwill impairment testing is performed on an annual basis. The Investment Services segment is comprised of four reporting units and the Investment and Wealth Management segment is comprised of two reporting units. As a result of the annual goodwill impairment test of the six reporting units conducted in the second quarter of 2020 , no goodwill impairment was recognized.

Other assets

Other assets	9 Months Ended
	Sep. 30, 2020
Other Assets [Abstract]
Other assets	Other assets The following table provides the components of other assets presented on the consolidated balance sheet. Other assets Sept. 30, 2020 Dec. 31, 2019 (in millions) Corporate/bank-owned life insurance $ 5,276 $ 5,219 Accounts receivable 3,549 3,802 Fails to deliver 2,192 1,671 Software 1,832 1,590 Prepaid pension assets 1,599 1,464 Equity in a joint venture and other investments 1,190 1,102 Renewable energy investments 1,057 1,144 Qualified affordable housing project investments 997 1,024 Prepaid expense 522 491 Federal Reserve Bank stock 478 466 Income taxes receivable 332 388 Seed capital 200 184 Fair value of hedging derivatives 56 21 Other (a) 1,499 1,655 Total other assets $ 20,779 $ 20,221 (a) At Sept. 30, 2020 and Dec. 31, 2019, other assets include $8 million and $22 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 income on the consolidated income statement. Our non-readily marketable equity securities totaled $112 million at Sept. 30, 2020 and $61 million at Dec. 31, 2019 and are included in equity in a joint venture and other 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) 3Q20 2Q20 3Q19 YTD20 YTD19 Upward adjustments $ 4 $ 2 $ 1 $ 10 $ 3 $ 42 Downward adjustments — — — — (1) (4) Net adjustments $ 4 $ 2 $ 1 $ 10 $ 2 $ 38 Qualified affordable housing project investments We invest in affordable housing projects primarily to satisfy the Company’s requirements under the Community Reinvestment Act. Our total investment in qualified affordable housing projects totaled $1.0 billion at both Sept. 30, 2020 and Dec. 31, 2019. Commitments to fund future investments in qualified affordable housing projects totaled $388 million at Sept. 30, 2020 and $422 million at Dec. 31, 2019 and are recorded in other liabilities. A summary of the commitments to fund future investments is as follows: 2020 – $40 million; 2021 – $187 million; 2022 – $99 million; 2023 – $36 million; 2024 – $1 million; and 2025 and thereafter – $25 million. Tax credits and other tax benefits recognized were $35 million in the third quarter of 2020, $38 million in the second quarter of 2020, $39 million in the third quarter of 2019, $111 million in the first nine months of 2020 and $117 million in the first nine months of 2019. Investments valued using net asset value (“NAV”) per share In our Investment and Wealth Management business, we make seed capital investments in certain funds we manage. We also hold private equity investments, specifically 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 Sept. 30, 2020 Dec. 31, 2019 (in millions) Fair value Unfunded Fair value Unfunded Seed capital (a) $ 44 $ 11 $ 59 $ — Private equity investments (SBICs) (b) 97 55 89 55 Other (c) 43 — 33 — Total $ 184 $ 66 $ 181 $ 55 (a) Primarily includes leveraged loans and structured credit funds, which are generally not redeemable. Distributions from such investments will be received as the underlying investments in the funds, which have lives of six of six years at Dec. 31, 2019, are liquidated. (b) Private equity investments 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	9 Months Ended
	Sep. 30, 2020
Revenue from Contract with Customer [Abstract]
Contract revenue	Contract revenueFee revenue in Investment Services and Investment and Wealth Management 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 fee schedules. See Note 10 of the Notes to Consolidated Financial Statements in our 2019 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 2019 Annual Report for additional information on our principal businesses, Investment Services and Investment and Wealth Management, and the primary services provided. Disaggregation of contract revenue Contract revenue is included in fee revenue on the consolidated income statement. The following table presents fee 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 the generally accepted accounting principles used for consolidated financial reporting. Disaggregation of contract revenue by business segment Quarter ended Sept. 30, 2020 June 30, 2020 Sept. 30, 2019 (a) (in millions) IS IWM Other Total IS IWM Other Total IS IWM Other Total Fee revenue - contract revenue: Investment services fees: Asset servicing fees $ 1,143 $ 25 $ (13) $ 1,155 $ 1,147 $ 25 $ (15) $ 1,157 $ 1,106 $ 20 $ (5) $ 1,121 Clearing services fees 397 — — 397 431 — — 431 419 — — 419 Issuer services fees 296 — — 296 277 — — 277 324 — — 324 Treasury services fees 153 1 (2) 152 144 — 1 145 140 — — 140 Total investment services fees 1,989 26 (15) 2,000 1,999 25 (14) 2,010 1,989 20 (5) 2,004 Investment management and performance fees 4 838 (3) 839 4 792 (5) 791 4 829 (4) 829 Financing-related fees 13 1 1 15 23 1 — 24 14 — — 14 Distribution and servicing (2) 31 — 29 (7) 34 — 27 (12) 45 — 33 Investment and other income 57 (33) (2) 22 62 (41) 3 24 72 (50) — 22 Total fee revenue - contract revenue 2,061 863 (19) 2,905 2,081 811 (16) 2,876 2,067 844 (9) 2,902 Fee and other revenue - not in scope of Accounting Standards Codification (“ASC”) 606 (b)(c) 185 8 39 232 258 27 54 339 229 (6) 3 226 Total fee and other revenue (loss) $ 2,246 $ 871 $ 20 $ 3,137 $ 2,339 $ 838 $ 38 $ 3,215 $ 2,296 $ 838 $ (6) $ 3,128 (a) Restated to reflect the first quarter 2020 business segment reclassifications. There was no impact on total revenue, by type or in aggregate. See Note 19 for additional information related to the reclassifications. (b) Primarily includes foreign exchange and other trading revenue, financing-related fees, investment and other income (loss), asset servicing fees and net securities gains (losses), all of which are accounted for using other accounting guidance. (c) The Investment and Wealth Management business segment includes income fr om consolidated investment management funds, net of noncontrolling interests, of $20 million in the third quarter of 2020, $39 million in the second quarter of 2020 and $— million in the third quarter of 2019. IS - Investment Services business segment. IWM - Investment and Wealth Management business segment. Disaggregation of contract revenue by business segment Year-to-date Sept. 30, 2020 Sept. 30, 2019 (a) (in millions) IS IWM Other Total IS IWM Other Total Fee revenue - contract revenue: Investment services fees: Asset servicing fees $ 3,417 $ 73 $ (39) $ 3,451 $ 3,282 $ 60 $ (19) $ 3,323 Clearing services fees 1,298 — — 1,298 1,228 — (1) 1,227 Issuer services fees 836 — — 836 866 — — 866 Treasury services fees 446 1 (1) 446 412 1 — 413 Total investment services fees 5,997 74 (40) 6,031 5,788 61 (20) 5,829 Investment management and performance fees 13 2,492 (12) 2,493 12 2,503 (12) 2,503 Financing-related fees 64 2 1 67 47 — 1 48 Distribution and servicing (21) 108 — 87 (39) 134 — 95 Investment and other income 191 (124) 1 68 210 (147) — 63 Total fee revenue - contract revenue 6,244 2,552 (50) 8,746 6,018 2,551 (31) 8,538 Fee and other revenue - not in scope of ASC 606 (b)(c) 777 3 138 918 672 10 74 756 Total fee and other revenue $ 7,021 $ 2,555 $ 88 $ 9,664 $ 6,690 $ 2,561 $ 43 $ 9,294 (a) Restated to reflect the first quarter 2020 business segment reclassifications. There was no impact on total revenue, by type or in aggregate. See Note 19 for additional information related to the reclassifications. (b) Primarily includes foreign exchange and other trading revenue, financing-related fees, investment and other income (loss), asset servicing fees and net securities gains (losses), all of which are accounted for using other accounting guidance. (c) The Investment and Wealth Management business segment includes income from consolidated investment management funds, net of noncontrolling interests, of $39 million in the first nine months of 2020 and $22 million in the first nine months of 2019. IS - Investment Services business segment. IWM - Investment and Wealth Management business segment. Contract balances Our clients are billed based on fee schedules that are agreed upon in each customer contract. Receivables from customers were $2.5 billion at Sept. 30, 2020 and $2.4 billion at Dec. 31, 2019. Contract assets represent accrued revenues that have not yet been billed to the customers due to certain contractual terms other than the passage of time and were $57 million at Sept. 30, 2020 and $32 million at Dec. 31, 2019. 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 $187 million at Sept. 30, 2020 and $168 million at Dec. 31, 2019. Contract liabilities are included in other liabilities on the consolidated balance sheet. Revenue recognized in the third quarter of 2020 relating to contract liabilities as of June 30, 2020 was $65 million. Revenue recognized in the first nine months of 2020 relating to contract liabilities as of Dec. 31, 2019 was $95 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 $77 million at Sept. 30, 2020 and $86 million at Dec. 31, 2019. Capitalized sales incentives are amortized based on the transfer of goods or services to which the assets relate and typically average nine years. The amortization of capitalized sales incentives, which is primarily included in staff expense on the consolidated income statement, totaled $6 million in the third quarter of 2020, $7 million in the third quarter of 2019, $5 million in the second quarter of 2020, $16 million in the first nine months of 2020 and $17 million in the first nine months of 2019. 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 seven 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 revenue

Net interest revenue	9 Months Ended
	Sep. 30, 2020
Interest Revenue (Expense), Net [Abstract]
Net interest revenue	Net interest revenue The following table provides the components of net interest revenue presented on the consolidated income statement. Net interest revenue Quarter ended Year-to-date (in millions) Sept. 30, 2020 June 30, 2020 Sept. 30, 2019 Sept. 30, 2020 Sept. 30, 2019 Interest revenue Deposits with the Federal Reserve and other central banks $ (10) $ (7) $ 102 $ 63 $ 354 Deposits with banks 20 40 73 118 200 Federal funds sold and securities purchased under resale agreements 48 61 660 505 1,702 Margin loans 41 40 104 168 358 Non-margin loans 199 230 287 (a) 738 1,007 (a) Securities: Taxable 499 556 669 1,649 2,062 Exempt from federal income taxes 7 6 7 19 29 Total securities 506 562 676 1,668 2,091 Trading securities 16 17 40 73 115 Total interest revenue 820 943 1,942 3,333 5,827 Interest expense Deposits (29) (17) 437 194 1,260 Federal funds purchased and securities sold under repurchase agreements 6 1 443 282 1,146 Trading liabilities 2 2 8 11 26 Other borrowed funds 3 7 10 14 54 Commercial paper — 1 22 7 48 Customer payables — (1) 59 29 198 Long-term debt 135 170 233 499 722 Total interest expense 117 163 1,212 1,036 3,454 Net interest revenue 703 780 730 2,297 2,373 Provision for credit losses 9 143 (16) 321 (17) Net interest revenue after provision for credit losses $ 694 $ 637 $ 746 $ 1,976 $ 2,390 (a) Includes the impact of a lease-related impairment of $70 million.

Employee benefit plans

Employee benefit plans	9 Months Ended
	Sep. 30, 2020
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 Sept. 30, 2020 June 30, 2020 Sept. 30, 2019 (in millions) Domestic Foreign Health Domestic Foreign Health Domestic Foreign Health Service cost $ — $ 3 $ — $ — $ 3 $ — $ — $ 3 $ — Interest cost 39 7 2 39 6 1 44 8 2 Expected return on assets (80) (10) (2) (79) (9) (2) (84) (11) (1) Other 22 2 (1) 21 3 — 13 — (1) Net periodic benefit (credit) cost $ (19) $ 2 $ (1) $ (19) $ 3 $ (1) $ (27) $ — $ — Net periodic benefit (credit) cost Year-to-date Sept. 30, 2020 Sept. 30, 2019 (in millions) Domestic Foreign Health Domestic Foreign Health Service cost $ — $ 9 $ — $ — $ 9 $ — Interest cost 117 20 4 133 24 5 Expected return on assets (239) (29) (5) (252) (34) (5) Other 65 8 (2) 39 1 (2) Net periodic benefit (credit) cost $ (57) $ 8 $ (3) $ (80) $ — $ (2)

Income taxes

Income taxes	9 Months Ended
	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income taxes	Income taxes BNY Mellon recorded an income tax provision of $213 million (18.4% effective tax rate) in the third quarter of 2020, $246 million (19.1% effective tax rate) in the third quarter of 2019 and $216 million (18.3% effective tax rate) in the second quarter of 2020. Our total tax reserves as of Sept. 30, 2020 were $85 million compared with $173 million at Dec. 31, 2019. If these tax reserves were unnecessary, $85 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 Sept. 30, 2020 is accrued interest, where applicable, of $23 million. The additional tax expense related to interest for the nine months ended Sept. 30, 2020 was $5 million, compared with $9 million for the nine months ended Sept. 30, 2019. It is reasonably possible the total reserve for uncertain tax positions could decrease within the next 12 months by approximately $15 million as a result of adjustments related to tax years that are still subject to examination.

Variable interest entities and

Variable interest entities and securitization	9 Months Ended
	Sep. 30, 2020
Securitizations And Variable Interest Entities Disclosure [Abstract]
Variable interest entities and securitization	Variable interest entities and securitization We have variable interests in variable interest entities (“VIEs”), which include investments in retail, institutional and alternative investment funds, including CLO structures in which we provide asset management services, some of which are consolidated. 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 in the consolidated balance sheet as of Sept. 30, 2020 and Dec. 31, 2019. 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 investments Sept. 30, 2020 Dec. 31, 2019 (in millions) Investment Securitization Total Investment Securitization Total Trading assets $ 579 $ 400 $ 979 $ 229 $ 400 $ 629 Other assets 9 — 9 16 — 16 Total assets $ 588 (a) $ 400 $ 988 $ 245 (b) $ 400 $ 645 Other liabilities $ 4 $ 400 $ 404 $ 1 $ 387 $ 388 Total liabilities $ 4 (a) $ 400 $ 404 $ 1 (b) $ 387 $ 388 Nonredeemable noncontrolling interests $ 251 (a) $ — $ 251 $ 102 (b) $ — $ 102 (a) Includes voting model entities (“VMEs”) with assets of $226 million, liabilities of $1 million and nonredeemable noncontrolling interests of $31 million. (b) Includes VMEs with assets of $50 million, liabilities of $1 million and nonredeemable noncontrolling interests of $1 million. 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 Sept. 30, 2020 and Dec. 31, 2019, the following assets and liabilities related to the VIEs where we are not the primary beneficiary were included in our consolidated balance sheets and primarily related to accounting for our investments in qualified affordable housing and renewable energy projects. The maximum loss exposure indicated in the table below relates solely to our investments in, and unfunded commitments to, the VIEs. Non-consolidated VIEs Sept. 30, 2020 Dec. 31, 2019 (in millions) Assets Liabilities Maximum Assets Liabilities Maximum Securities - Available-for-sale (a) $ 206 $ — $ 206 $ 208 $ — $ 208 Other 2,278 388 2,675 2,400 422 2,822 (a) Includes investments in the Company’s sponsored CLOs.

Preferred stock

Preferred stock	9 Months Ended
	Sep. 30, 2020
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 Sept. 30, 2020 and Dec. 31, 2019. Preferred stock summary (a) Total shares issued and outstanding Carrying value (b) (in millions) Sept. 30, 2020 Dec. 31, 2019 Sept. 30, 2020 Dec. 31, 2019 Per annum dividend rate Series A Greater of (i) three-month LIBOR plus 0.565% for the related distribution period; or (ii) 4.000% 5,001 5,001 $ 500 $ 500 Series C 5.2% 5,825 5,825 568 568 Series D 4.50% to but excluding June 20, 2023, then a floating rate equal to the three-month LIBOR plus 2.46% 5,000 5,000 494 494 Series E 4.95% to but excluding June 20, 2020, then a floating rate equal to the three-month LIBOR plus 3.42% 10,000 10,000 990 990 Series F 4.625% to but excluding Sept. 20, 2026, then a floating rate equal to the three-month LIBOR plus 3.131% 10,000 10,000 990 990 Series G 4.70% to but excluding Sept. 20, 2025, then a floating rate equal to the five-year treasury rate plus 4.358% 10,000 — 990 — Total 45,826 35,826 $ 4,532 $ 3,542 (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 C, Series D, Series E, Series F and Series G preferred stock is recorded net of issuance costs. In May 2020, the Parent issued 1,000,000 depositary shares, each representing a 1/100th interest in a share of the Parent’s Series G Noncumulative Perpetual Preferred Stock (the “Series G Preferred Stock”). The Parent will pay dividends on the Series G Preferred Stock, if declared by its board of directors, on each March 20 and September 20, at an annual rate of 4.70%, from the original issue date to but excluding Sept. 20, 2025; and at a floating rate equal to the five-year treasury rate on the date that is three business days prior to the reset date plus 4.358% for each reset period, from and including Sept. 20, 2025. The floating rate will initially reset on Sept. 20, 2025 and subsequently on each date falling on the fifth anniversary of the preceding reset date. The table below presents the dividends paid on the Parent’s preferred stock. Preferred dividends paid (dollars in millions, except per share amounts) Depositary shares 3Q20 2Q20 3Q19 YTD20 YTD19 Per share Total Per share Total Per share Total Per share Total Per share Total Series A 100 (a) $ 1,011.11 $ 5 $ 1,022.22 $ 5 $ 1,022.22 $ 5 $ 3,044.44 $ 15 $ 3,044.44 $ 15 Series C 4,000 1,300.00 7 1,300.00 8 1,300.00 8 3,900.00 23 3,900.00 23 Series D 100 N/A — 2,250.00 11 N/A — 2,250.00 11 2,250.00 11 Series E 100 962.65 10 2,475.00 25 N/A — 3,437.65 35 2,475.00 25 Series F 100 2,312.50 23 N/A — 2,312.50 23 4,625.00 46 4,625.00 46 Series G 100 1,579.72 16 N/A — N/A — 1,579.72 16 N/A — Total $ 61 $ 49 $ 36 $ 146 $ 120 (a) Represents Normal Preferred Capital Securities. N/A - Not applicable. For additional information on the preferred stock, see Note 15 of the Notes to Consolidated Financial Statements in our 2019 Annual Report.

Other comprehensive income (los

Other comprehensive income (loss)	9 Months Ended
	Sep. 30, 2020
Equity [Abstract]
Other comprehensive income (loss)	Other comprehensive income (loss) Components of other comprehensive income (loss) Quarter ended Sept. 30, 2020 June 30, 2020 Sept. 30, 2019 (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) $ 262 $ 69 $ 331 $ 104 $ 11 $ 115 $ (213) $ (63) $ (276) Total foreign currency translation 262 69 331 104 11 115 (213) (63) (276) Unrealized gain on assets available-for-sale: Unrealized gain arising during period 297 (64) 233 989 (236) 753 88 (25) 63 Reclassification adjustment (b) (9) 3 (6) (9) 2 (7) 1 — 1 Net unrealized gain on assets available-for-sale 288 (61) 227 980 (234) 746 89 (25) 64 Defined benefit plans: Amortization of prior service credit, net loss and initial obligation included in net periodic benefit cost (b) 24 (4) 20 24 (5) 19 13 (3) 10 Total defined benefit plans 24 (4) 20 24 (5) 19 13 (3) 10 Unrealized gain (loss) on cash flow hedges: Unrealized hedge gain (loss) arising during period 9 (1) 8 3 (1) 2 (9) 4 (5) Reclassification of net (gain) loss to net income: Interest rate contracts - interest expense — — — — — — 1 — 1 Foreign exchange (“FX”) contracts - staff expense — — — 3 (1) 2 (2) — (2) Total reclassifications to net income — — — 3 (1) 2 (1) — (1) Net unrealized gain (loss) on cash flow hedges 9 (1) 8 6 (2) 4 (10) 4 (6) Total other comprehensive income (loss) $ 583 $ 3 $ 586 $ 1,114 $ (230) $ 884 $ (121) $ (87) $ (208) (a) Includes the impact of hedges of net investments in foreign subsidiaries. See Note 17 for additional information. (b) The reclassification adjustment related to the unrealized gain (loss) on assets available-for-sale is recorded as net securities gains on the consolidated income statement. The amortization of prior service credit, net loss and initial obligation included in net periodic benefit cost is recorded as staff expense on the consolidated income statement. Components of other comprehensive income (loss) Year-to-date Sept. 30, 2020 Sept. 30, 2019 (in millions) Pre-tax Tax After-tax Pre-tax Tax After-tax Foreign currency translation: Foreign currency translation adjustments arising during the period (a) $ 101 $ (24) $ 77 $ (157) $ (80) $ (237) Total foreign currency translation 101 (24) 77 (157) (80) (237) Unrealized gain on assets available-for-sale: Unrealized gain (loss) arising during period 1,529 (360) 1,169 794 (205) 589 Reclassification adjustment (b) (27) 7 (20) (7) 2 (5) Net unrealized gain on assets available-for-sale 1,502 (353) 1,149 787 (203) 584 Defined benefit plans: Net (loss) arising during the period — — — (11) 2 (9) Amortization of prior service credit, net loss and initial obligation included in net periodic benefit cost (b) 72 (15) 57 38 (8) 30 Total defined benefit plans 72 (15) 57 27 (6) 21 Unrealized (loss) gain on cash flow hedges: Unrealized hedge (loss) arising during period (1) 1 — (1) (2) (3) Reclassification of net loss (gain) to net income : Interest rate contracts - interest expense — — — 1 — 1 FX contracts - staff expense 2 (1) 1 (1) 2 1 Total reclassifications to net income 2 (1) 1 — 2 2 Net unrealized (loss) on cash flow hedges 1 — 1 (1) — (1) Total other comprehensive income $ 1,676 $ (392) $ 1,284 $ 656 $ (289) $ 367 (a) Includes the impact of hedges of net investments in foreign subsidiaries. See Note 17 for additional information. (b) The reclassification adjustment related to the unrealized gain (loss) on assets available-for-sale is recorded as net securities gains on the consolidated income statement. The amortization of prior service credit, net loss and initial obligation included in net periodic benefit cost is recorded as staff expense on the consolidated income statement.

Fair value measurement

Fair value measurement	9 Months Ended
	Sep. 30, 2020
Fair Value Disclosures [Abstract]
Fair value measurement	Fair value measurementFair 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 2019 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 Sept. 30, 2020 and Dec. 31, 2019, 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 measured at fair value on a recurring basis at Sept. 30, 2020 Total carrying (dollars in millions) Level 1 Level 2 Level 3 Netting (a) Available-for-sale securities: Agency RMBS $ — $ 24,733 $ — $ — $ 24,733 U.S. Treasury 24,733 — — — 24,733 Sovereign debt/sovereign guaranteed 7,179 6,914 — — 14,093 Agency commercial MBS — 9,942 — — 9,942 Supranational — 7,136 — — 7,136 Foreign covered bonds — 5,841 — — 5,841 CLOs — 4,657 — — 4,657 Foreign government agencies — 3,970 — — 3,970 U.S. government agencies — 3,478 — — 3,478 Other ABS — 2,930 — — 2,930 Non-agency commercial MBS — 2,711 — — 2,711 Non-agency RMBS (b) — 1,941 — — 1,941 State and political subdivisions — 1,690 — — 1,690 Corporate bonds — 1,030 — — 1,030 Commercial paper/CDs — 357 — — 357 Other debt securities — 1 — — 1 Total available-for-sale securities 31,912 77,331 — — 109,243 Trading assets: Debt instruments 3,181 3,050 — — 6,231 Equity instruments (c) 2,694 — — — 2,694 Derivative assets not designated as hedging: Interest rate 4 4,958 — (2,133) 2,829 Foreign exchange — 4,410 — (3,102) 1,308 Equity and other contracts 4 11 — (3) 12 Total derivative assets not designated as hedging 8 9,379 — (5,238) 4,149 Total trading assets 5,883 12,429 — (5,238) 13,074 Other assets: Derivative assets designated as hedging: Foreign exchange — 56 — — 56 Total derivative assets designated as hedging — 56 — — 56 Other assets (d) 113 174 — — 287 Assets measured at NAV (d) 184 Subtotal assets of operations at fair value 37,908 89,990 — (5,238) 122,844 Percentage of assets of operations prior to netting 30 % 70 % — % Assets of consolidated investment management funds 360 228 — — 588 Total assets $ 38,268 $ 90,218 $ — $ (5,238) $ 123,432 Percentage of total assets prior to netting 30 % 70 % — % Liabilities measured at fair value on a recurring basis at Sept. 30, 2020 Total carrying (dollars in millions) Level 1 Level 2 Level 3 Netting (a) Trading liabilities: Debt instruments $ 3,396 $ 66 $ — $ — $ 3,462 Equity instruments 26 — — — 26 Derivative liabilities not designated as hedging: Interest rate 3 4,243 — (2,551) 1,695 Foreign exchange — 4,522 — (3,631) 891 Equity and other contracts — 11 — (1) 10 Total derivative liabilities not designated as hedging 3 8,776 — (6,183) 2,596 Total trading liabilities 3,425 8,842 — (6,183) 6,084 Long-term debt (c) — 400 — — 400 Other liabilities – derivative liabilities designated as hedging: Interest rate — 803 — — 803 Foreign exchange — 194 — — 194 Total other liabilities – derivative liabilities designated as hedging — 997 — — 997 Subtotal liabilities of operations at fair value 3,425 10,239 — (6,183) 7,481 Percentage of liabilities of operations prior to netting 25 % 75 % — % Liabilities of consolidated investment management funds — 4 — — 4 Total liabilities $ 3,425 $ 10,243 $ — $ (6,183) $ 7,485 Percentage of total liabilities prior to netting 25 % 75 % — % (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 $512 million in Level 2 that was included in the former Grantor Trust. (c) Includes certain interests in securitizations. (d) Includes seed capital, private equity investments and other assets. Assets measured at fair value on a recurring basis at Dec. 31, 2019 Total carrying (dollars in millions) Level 1 Level 2 Level 3 Netting (a) Available-for-sale securities: Agency RMBS $ — $ 27,043 $ — $ — $ 27,043 U.S. Treasury 15,431 — — — 15,431 Sovereign debt/sovereign guaranteed 7,784 4,862 — — 12,646 Agency commercial MBS — 9,417 — — 9,417 Foreign covered bonds — 4,197 — — 4,197 CLOs — 4,063 — — 4,063 Supranational — 3,709 — — 3,709 Foreign government agencies — 2,643 — — 2,643 Non-agency commercial MBS — 2,178 — — 2,178 Other ABS — 2,143 — — 2,143 U.S. government agencies — 1,949 — — 1,949 Non-agency RMBS (b) — 1,233 — — 1,233 State and political subdivisions — 1,044 — — 1,044 Corporate bonds — 853 — — 853 Other debt securities — 1 — — 1 Total available-for-sale securities 23,215 65,335 — — 88,550 Trading assets: Debt instruments 1,568 4,243 — — 5,811 Equity instruments (c) 4,539 — — — 4,539 Derivative assets not designated as hedging: Interest rate 4 3,686 — (1,792) 1,898 Foreign exchange — 5,331 — (4,021) 1,310 Equity and other contracts — 19 — (6) 13 Total derivative assets not designated as hedging 4 9,036 — (5,819) 3,221 Total trading assets 6,111 13,279 — (5,819) 13,571 Other assets : Derivative assets designated as hedging: Foreign exchange — 21 — — 21 Total derivative assets designated as hedging — 21 — — 21 Other assets (d) 38 179 — — 217 Assets measured at NAV (d) 181 Subtotal assets of operations at fair value 29,364 78,814 — (5,819) 102,540 Percentage of assets of operations prior to netting 27 % 73 % — % Assets of consolidated investment management funds 212 33 — — 245 Total assets $ 29,576 $ 78,847 $ — $ (5,819) $ 102,785 Percentage of total assets prior to netting 27 % 73 % — % Liabilities measured at fair value on a recurring basis at Dec. 31, 2019 Total carrying (dollars in millions) Level 1 Level 2 Level 3 Netting (a) Trading liabilities: Debt instruments $ 1,477 $ 107 $ — $ — $ 1,584 Equity instruments 73 — — — 73 Derivative liabilities not designated as hedging: Interest rate 6 3,244 — (1,986) 1,264 Foreign exchange — 5,340 — (3,428) 1,912 Equity and other contracts 3 6 — (1) 8 Total derivative liabilities not designated as hedging 9 8,590 — (5,415) 3,184 Total trading liabilities 1,559 8,697 — (5,415) 4,841 Long-term debt (c) — 387 — — 387 Other liabilities – derivative liabilities designated as hedging: Interest rate — 350 — — 350 Foreign exchange — 257 — — 257 Total other liabilities – derivative liabilities designated as hedging — 607 — — 607 Subtotal liabilities of operations at fair value 1,559 9,691 — (5,415) 5,835 Percentage of liabilities of operations prior to netting 14 % 86 % — % Liabilities of consolidated investment management funds 1 — — — 1 Total liabilities $ 1,560 $ 9,691 $ — $ (5,415) $ 5,836 Percentage of total liabilities prior to netting 14 % 86 % — % (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 $640 million in Level 2 that was included in the former Grantor Trust. (c) Includes certain interests in securitizations. (d) Includes seed capital, private equity investments and other assets. Details of certain available-for-sale securities measured at fair value on a recurring basis Sept. 30, 2020 Dec. 31, 2019 Total Ratings (a) Total Ratings (a) AAA/ A+/ BBB+/ BB+ and AAA/ A+/ BBB+/ BB+ and (dollars in millions) (b) (b) Non-agency RMBS (c) , originated in: 2007-2020 $ 1,311 88 % — % — % 12 % $ 464 55 % 1 % — % 44 % 2006 244 — 23 — 77 291 — 21 — 79 2005 243 4 — 7 89 305 5 2 8 85 2004 and earlier 143 20 9 12 59 173 22 24 4 50 Total non-agency RMBS $ 1,941 61 % 4 % 2 % 33 % $ 1,233 25 % 9 % 3 % 63 % Non-agency commercial MBS originated in: 2009-2020 $ 2,711 100 % — % — % — % $ 2,178 98 % 2 % — % — % Foreign covered bonds: Canada $ 2,368 98 % 2 % — % — % $ 1,798 100 % — % — % — % UK 1,130 100 — — — 984 100 — — — Australia 775 100 — — — 431 100 — — — Norway 609 100 — — — 287 100 — — — Germany 479 100 — — — 357 100 — — — Other 480 100 — — — 340 100 — — — Total foreign covered bonds $ 5,841 99 % 1 % — % — % $ 4,197 100 % — % — % — % Sovereign debt/sovereign guaranteed: Germany $ 2,155 100 % — % — % — % $ 1,997 100 % — % — % — % UK 2,037 100 — — — 3,318 100 — — — Italy 1,974 — — 100 — 1,260 — — 100 — France 1,846 100 — — — 1,272 100 — — — Spain 1,835 — 5 95 — 1,453 — 6 94 — Singapore 949 100 — — — 742 100 — — — Canada 732 100 — — — 271 100 — — — Ireland 522 — 100 — — 301 — 100 — — Netherlands 471 100 — — — 791 100 — — — Japan 437 — 100 — — 274 — 100 — — Austria 294 100 — — — 240 100 — — — Belgium 253 100 — — — 79 100 — — — Hong Kong 206 100 — — — 411 100 — — — Other (d) 382 51 — 18 31 237 39 4 — 57 Total sovereign debt/sovereign guaranteed $ 14,093 65 % 7 % 27 % 1 % $ 12,646 73 % 5 % 21 % 1 % Foreign government agencies: Germany $ 1,483 100 % — % — % — % $ 1,131 100 % — % — % — % Netherlands 800 100 — — — 678 100 — — — Canada 442 72 28 — — 71 — 100 — — France 293 100 — — — 42 100 — — — Sweden 276 100 — — — 202 100 — — — Finland 246 100 — — — 245 100 — — — Other 430 77 23 — — 274 79 21 — — Total foreign government agencies $ 3,970 94 % 6 % — % — % $ 2,643 95 % 5 % — % — % (a) Represents ratings by S&P or the equivalent. (b) At Sept. 30, 2020 and Dec. 31, 2019, sovereign debt/sovereign guaranteed 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 $512 million at Sept. 30, 2020 and $640 million at Dec. 31, 2019 that were included in the former Grantor Trust. (d) Includes non-investment grade sovereign debt/sovereign guaranteed securities related to Brazil of $119 million at Sept. 30, 2020 and $134 million at Dec. 31, 2019. 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. Examples would be the recording of an impairment of an asset and non-readily marketable equity securities carried at cost with upward or downward adjustments. The following table presents the financial instruments carried on the consolidated balance sheet by caption and level in the fair value hierarchy as of Sept. 30, 2020 and Dec. 31, 2019. Assets measured at fair value on a nonrecurring basis Sept. 30, 2020 Dec. 31, 2019 Total carrying Total carrying (in millions) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Loans (a) $ — $ 52 $ — $ 52 $ — $ 58 $ — $ 58 Other assets (b) — 113 — 113 — 64 — 64 Total assets at fair value on a nonrecurring basis $ — $ 165 $ — $ 165 $ — $ 122 $ — $ 122 (a) The fair value of these loans decreased less than $1 million in the third quarter of 2020 and the fourth quarter of 2019, 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 Sept. 30, 2020 and Dec. 31, 2019, by caption on the consolidated balance sheet and by the valuation hierarchy. Summary of financial instruments Sept. 30, 2020 (in millions) Level 1 Level 2 Level 3 Total Carrying Assets: Interest-bearing deposits with the Federal Reserve and other central banks $ — $ 106,185 $ — $ 106,185 $ 106,185 Interest-bearing deposits with banks — 19,037 — 19,037 19,027 Federal funds sold and securities purchased under resale agreements — 29,647 — 29,647 29,647 Securities held-to-maturity 4,415 43,043 — 47,458 46,096 Loans (a) — 54,475 — 54,475 54,088 Other financial assets 4,104 1,121 — 5,225 5,225 Total $ 8,519 $ 253,508 $ — $ 262,027 $ 260,268 Liabilities: Noninterest-bearing deposits $ — $ 79,470 $ — $ 79,470 $ 79,470 Interest-bearing deposits — 216,499 — 216,499 216,842 Federal funds purchased and securities sold under repurchase agreements — 15,907 — 15,907 15,907 Payables to customers and broker-dealers — 23,514 — 23,514 23,514 Commercial paper — 671 — 671 671 Borrowings — 607 — 607 607 Long-term debt — 27,457 — 27,457 25,721 Total $ — $ 364,125 $ — $ 364,125 $ 362,732 (a) Does not include the leasing portfolio. Summary of financial instruments Dec. 31, 2019 (in millions) Level 1 Level 2 Level 3 Total estimated Carrying Assets: Interest-bearing deposits with the Federal Reserve and other central banks $ — $ 95,042 $ — $ 95,042 $ 95,042 Interest-bearing deposits with banks — 14,832 — 14,832 14,811 Federal funds sold and securities purchased under resale agreements — 30,182 — 30,182 30,182 Securities held-to-maturity 4,630 30,175 — 34,805 34,483 Loans (a) — 54,194 — 54,194 53,718 Other financial assets 4,830 1,233 — 6,063 6,063 Total $ 9,460 $ 225,658 $ — $ 235,118 $ 234,299 Liabilities: Noninterest-bearing deposits $ — $ 57,630 $ — $ 57,630 $ 57,630 Interest-bearing deposits — 200,846 — 200,846 201,836 Federal funds purchased and securities sold under repurchase agreements — 11,401 — 11,401 11,401 Payables to customers and broker-dealers — 18,758 — 18,758 18,758 Commercial paper — 3,959 — 3,959 3,959 Borrowings — 917 — 917 917 Long-term debt — 27,858 — 27,858 27,114 Total $ — $ 321,369 $ — $ 321,369 $ 321,615 (a) Does not include the leasing portfolio.

Fair value option

Fair value option	9 Months Ended
	Sep. 30, 2020
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 certain long-term debt. 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 Sept. 30, 2020 Dec. 31, 2019 (in millions) Assets of consolidated investment management funds: Trading assets $ 579 $ 229 Other assets 9 16 Total assets of consolidated investment management funds $ 588 $ 245 Liabilities of consolidated investment management funds: Other liabilities 4 1 Total liabilities of consolidated investment management funds $ 4 $ 1 BNY Mellon values the assets and liabilities of its 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 value of the assets and liabilities are recorded in the consolidated income statement as investment income of consolidated investment management funds and in the interest of investment management fund note holders, respectively. We have elected the fair value option on $240 million of long-term debt. The fair value of this long-term debt was $400 million at Sept. 30, 2020 and $387 million at Dec. 31, 2019. The long-term debt is valued using observable market inputs and is included in Level 2 of the valuation hierarchy. The following table presents the changes in fair value of long-term debt recorded in foreign exchange and other trading revenue in the consolidated income statement. Change in fair value of long-term debt (a) (in millions) 3Q20 2Q20 3Q19 YTD20 YTD19 Foreign exchange and other trading revenue $ (1) $ (2) $ (3) $ (13) $ (15) (a) The changes in fair value are approximately offset by an economic hedge included in foreign exchange and other trading revenue.

Derivative instruments

Derivative instruments	9 Months Ended
	Sep. 30, 2020
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 third quarter of 2020. 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 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, sovereign debt/sovereign guaranteed, corporate bonds and foreign covered bonds. At Sept. 30, 2020, $14.5 billion par value of available-for-sale securities were hedged with interest rate swaps designated as fair value hedges that had notional values of $14.5 billion. 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 Indian rupee, British pound, Euro, Hong Kong dollar, Singapore dollar and Polish zloty used in revenue and expense transactions for entities that have the U.S. dollar as their functional currency. As of Sept. 30, 2020, the hedged forecasted foreign currency transactions and designated forward foreign exchange contract hedges were $319 million (notional), with a pre-tax gain of $5 million recorded in accumulated OCI. This gain will be reclassified to earnings over the next 12 months. We also utilize 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. The unamortized derivative value associated with the excluded component is recognized in accumulated OCI. At Sept. 30, 2020, $140 million par value of available-for-sale securities was hedged with foreign currency forward contracts that had a notional value of $140 million. 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 Sept. 30, 2020, forward foreign exchange contracts with notional amounts totaling $7.9 billion were designated as net investment hedges. In addition to forward foreign exchange contracts, we also designate non-derivative financial instruments as hedges of our net investments in foreign subsidiaries. Those non-derivative financial instruments designated as hedges of our net investments in foreign subsidiaries were all long-term liabilities of BNY Mellon and, at Sept. 30, 2020, had a combined U.S. dollar equivalent carrying value of $179 million. 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 3Q20 2Q20 3Q19 YTD20 YTD19 Interest rate fair value hedges of available-for-sale securities Derivative Interest revenue $ 150 $ 19 $ (250) $ (864) $ (1,119) Hedged item Interest revenue (140) (15) 243 856 1,099 Interest rate fair value hedges of long-term debt Derivative Interest expense (68) 47 146 693 631 Hedged item Interest expense 66 (49) (145) (691) (627) Foreign exchange fair value hedges of available-for-sale securities Derivative (a) Other revenue 1 (5) 2 (11) 3 Hedged item Other revenue 1 5 (2) 13 (2) Cash flow hedge of interest rate risk (Loss) reclassified from OCI into income Interest expense — — (1) — (1) Cash flow hedges of forecasted FX exposures (Loss) gain reclassified from OCI into income Staff expense — (3) 2 (2) 1 Gain (loss) recognized in the consolidated income statement due to fair value and cash flow hedging relationships $ 10 $ (1) $ (5) $ (6) $ (15) (a) Includes gains of less than $1 million in the third quarter of 2020, second quarter of 2020 and third quarter of 2019 and gains of $1 million in the first nine months of 2020 and first nine months of 2019 associated with the amortization of the excluded component. At Sept. 30, 2020 and Dec. 31, 2019, the remaining accumulated OCI balance associated with the excluded component was de minimis. 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 3Q20 2Q20 3Q19 YTD20 YTD19 3Q20 2Q20 3Q19 YTD20 YTD19 FX contracts $ (289) $ (45) $ 252 $ 103 $ 322 Net interest revenue $ — $ — $ — $ — $ — 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) Sept. 30, 2020 Dec. 31, 2019 Sept. 30, 2020 Dec. 31, 2019 Available-for-sale securities (b)(c) $ 14,629 $ 13,792 $ 1,650 $ 687 Long-term debt $ 14,889 $ 13,945 $ 870 $ 116 (a) Includes $187 million and $53 million of basis adjustment increases on discontinued hedges associated with available-for-sale securities at Sept. 30, 2020 and Dec. 31, 2019, respectively, and $136 million and $200 million of basis adjustment decreases on discontinued hedges associated with long-term debt at Sept. 30, 2020 and Dec. 31, 2019, respectively. (b) Excludes hedged items where only foreign currency risk is the designated hedged risk, as the basis adjustments related to foreign currency hedges will not reverse through the consolidated income statement in future periods. The carrying amount excluded for available-for-sale securities was $140 million at Sept. 30, 2020 and $142 million at Dec. 31, 2019. (c) Carrying amount represents the amortized cost. The following table summarizes the notional amount and carrying values of our total derivative portfolio at Sept. 30, 2020 and Dec. 31, 2019. Impact of derivative instruments on the balance sheet Notional value Asset derivatives Liability derivatives Sept. 30, 2020 Dec. 31, 2019 Sept. 30, 2020 Dec. 31, 2019 Sept. 30, 2020 Dec. 31, 2019 (in millions) Derivatives designated as hedging instruments: (a)(b) Interest rate contracts $ 28,441 $ 28,365 $ — $ — $ 803 $ 350 Foreign exchange contracts 8,369 8,390 56 21 194 257 Total derivatives designated as hedging instruments $ 56 $ 21 $ 997 $ 607 Derivatives not designated as hedging instruments: (b)(c) Interest rate contracts $ 206,771 $ 306,790 $ 4,962 $ 3,690 $ 4,246 $ 3,250 Foreign exchange contracts 753,812 848,961 4,410 5,331 4,522 5,340 Equity contracts 2,241 3,189 15 19 8 5 Credit contracts 165 165 — — 3 4 Total derivatives not designated as hedging instruments $ 9,387 $ 9,040 $ 8,779 $ 8,599 Total derivatives fair value (d) $ 9,443 $ 9,061 $ 9,776 $ 9,206 Effect of master netting agreements (e) (5,238) (5,819) (6,183) (5,415) Fair value after effect of master netting agreements $ 4,205 $ 3,242 $ 3,593 $ 3,791 (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 $675 million and $1,620 million, respectively, at Sept. 30, 2020, and $1,022 million and $618 million, respectively, at Dec. 31, 2019. 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 and other trading revenue on the consolidated income statement. The following table presents our foreign exchange and other trading revenue. Foreign exchange and other trading revenue (in millions) 3Q20 2Q20 3Q19 YTD20 YTD19 Foreign exchange $ 151 $ 174 $ 129 $ 578 $ 439 Other trading (loss) revenue (14) (8) 21 44 47 Total foreign exchange and other trading revenue $ 137 $ 166 $ 150 $ 622 $ 486 Foreign exchange revenue includes income from purchasing and selling foreign currencies and currency forwards, futures and options. Other trading revenue reflects results from trading in cash instruments, including fixed income and equity securities and 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 were a gain of $12 million in the third quarter of 2020, a de minimis loss in the third quarter of 2019, a gain of $28 million in the second quarter of 2020, a loss of $1 million in the first nine months of 2020 and a gain of $23 million in the first nine months of 2019. 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. Sept. 30, 2020 Dec. 31, 2019 (in millions) Aggregate fair value of OTC derivatives in net liability positions (a) $ 5,958 $ 3,442 Collateral posted $ 6,384 $ 3,671 (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 was 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) Sept. 30, 2020 Dec. 31, 2019 (in millions) If The Bank of New York Mellon’s rating changed to: (b) A3/A- $ 10 $ 56 Baa2/BBB $ 565 $ 608 Ba1/BB+ $ 3,113 $ 2,084 (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 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 Sept. 30, 2020 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 $ 3,183 $ 2,133 $ 1,050 $ 350 $ — $ 700 Foreign exchange contracts 4,043 3,102 941 33 — 908 Equity and other contracts 8 3 5 — — 5 Total derivatives subject to netting arrangements 7,234 5,238 1,996 383 — 1,613 Total derivatives not subject to netting arrangements 2,209 — 2,209 — — 2,209 Total derivatives 9,443 5,238 4,205 383 — 3,822 Reverse repurchase agreements 72,507 54,629 (b) 17,878 17,852 — 26 Securities borrowing 11,769 — 11,769 11,216 — 553 Total $ 93,719 $ 59,867 $ 33,852 $ 29,451 $ — $ 4,401 (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, 2019 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 $ 2,394 $ 1,792 $ 602 $ 207 $ — $ 395 Foreign exchange contracts 4,861 4,021 840 44 — 796 Equity and other contracts 9 6 3 — — 3 Total derivatives subject to netting arrangements 7,264 5,819 1,445 251 — 1,194 Total derivatives not subject to netting arrangements 1,797 — 1,797 — — 1,797 Total derivatives 9,061 5,819 3,242 251 — 2,991 Reverse repurchase agreements 112,355 93,794 (b) 18,561 18,554 — 7 Securities borrowing 11,621 — 11,621 11,278 — 343 Total $ 133,037 $ 99,613 $ 33,424 $ 30,083 $ — $ 3,341 (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 Sept. 30, 2020 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 $ 5,035 $ 2,551 $ 2,484 $ 2,477 $ — $ 7 Foreign exchange contracts 4,294 3,631 663 224 — 439 Equity and other contracts 8 1 7 — — 7 Total derivatives subject to netting arrangements 9,337 6,183 3,154 2,701 — 453 Total derivatives not subject to netting arrangements 439 — 439 — — 439 Total derivatives 9,776 6,183 3,593 2,701 — 892 Repurchase agreements 69,494 54,629 (b) 14,865 14,863 1 1 Securities lending 1,002 — 1,002 961 — 41 Total $ 80,272 $ 60,812 $ 19,460 $ 18,525 $ 1 $ 934 (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, 2019 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 $ 3,550 $ 1,986 $ 1,564 $ 1,539 $ — $ 25 Foreign exchange contracts 4,873 3,428 1,445 74 — 1,371 Equity and other contracts 5 1 4 2 — 2 Total derivatives subject to netting arrangements 8,428 5,415 3,013 1,615 — 1,398 Total derivatives not subject to netting arrangements 778 — 778 — — 778 Total derivatives 9,206 5,415 3,791 1,615 — 2,176 Repurchase agreements 104,451 93,794 (b) 10,657 10,657 — — Securities lending 718 — 718 694 — 24 Total $ 114,375 $ 99,209 $ 15,166 $ 12,966 $ — $ 2,200 (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 Sept. 30, 2020 Dec. 31, 2019 Remaining contractual maturity Total Remaining contractual maturity Total (in millions) Overnight and continuous Up to 30 days 30 days or more Overnight and continuous Up to 30 days 30 days or more Repurchase agreements: U.S. Treasury $ 60,350 $ — $ — $ 60,350 $ 94,788 $ 10 $ — $ 94,798 Agency RMBS 2,913 675 2 3,590 4,234 774 — 5,008 Corporate bonds 232 64 1,432 1,728 266 236 1,617 2,119 Sovereign debt/ sovereign guaranteed 128 — 1,151 1,279 — 22 — 22 State and political subdivisions 43 39 810 892 38 166 1,077 1,281 U.S. government agencies 610 — — 610 594 16 — 610 Other debt securities 47 44 186 277 2 — 2 4 Equity securities — 53 715 768 31 99 479 609 Total $ 64,323 $ 875 $ 4,296 $ 69,494 $ 99,953 $ 1,323 $ 3,175 $ 104,451 Securities lending: Agency RMBS $ 180 $ — $ — $ 180 $ 160 $ — $ — $ 160 U.S. government agencies 1 — — 1 19 — — 19 Other debt securities 49 — — 49 41 — — 41 Equity securities 772 — — 772 498 — — 498 Total $ 1,002 $ — $ — $ 1,002 $ 718 $ — $ — $ 718 Total secured borrowings $ 65,325 $ 875 $ 4,296 $ 70,496 $ 100,671 $ 1,323 $ 3,175 $ 105,169

Commitments and contingent liab

Commitments and contingent liabilities	9 Months Ended
	Sep. 30, 2020
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 Sept. 30, 2020 Dec. 31, 2019 (in millions) Lending commitments $ 47,658 $ 49,119 Standby letters of credit (“SBLC”) (a) 2,175 2,298 Commercial letters of credit 87 74 Securities lending indemnifications (b)(c) 414,324 408,378 (a) Net of participations totaling $145 million at Sept. 30, 2020 and $146 million at Dec. 31, 2019. (b) Excludes the indemnification for securities for which BNY Mellon acts as an agent on behalf of CIBC Mellon clients, which totaled $58 billion at Sept. 30, 2020 and $57 billion at Dec. 31, 2019. (c) Includes cash collateral, invested in indemnified repurchase agreements, held by us as securities lending agent of $43 billion at Sept. 30, 2020 and $37 billion at Dec. 31, 2019. 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: $31.0 billion in less than one year, $16.3 billion in one to five years and $336 million over five years. SBLCs principally support obligations of corporate clients and were collateralized with cash and securities of $200 million at Sept. 30, 2020 and $184 million at Dec. 31, 2019. At Sept. 30, 2020, $1.6 billion of the SBLCs will expire within one year, $568 million in one to five years and $1 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 Sept. 30, 2020 Dec. 31, 2019 Investment grade 87 % 90 % Non-investment grade 13 % 10 % 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 $87 million at Sept. 30, 2020 and $74 million at Dec. 31, 2019. 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 $135 million at Sept. 30, 2020 and $94 million at Dec. 31, 2019. 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 $435 billion at Sept. 30, 2020 and $428 billion at Dec. 31, 2019. 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 Sept. 30, 2020 and Dec. 31, 2019, $58 billion and $57 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 $61 billion and $61 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 Sept. 30, 2020, we had $150 million of unsettled repurchase agreements and no unsettled reverse repurchase agreements. Industry concentrations We have significant industry concentrations related to credit exposure at Sept. 30, 2020. The tables below present our credit exposure in the financial institutions and commercial portfolios. Financial institutions portfolio exposure (in billions) Sept. 30, 2020 Loans Unfunded Total exposure Securities industry $ 2.8 $ 22.3 $ 25.1 Asset managers 1.2 6.5 7.7 Banks 6.1 1.1 7.2 Insurance 0.1 2.7 2.8 Government 0.1 0.2 0.3 Other 0.7 0.7 1.4 Total $ 11.0 $ 33.5 $ 44.5 Commercial portfolio exposure (in billions) Sept. 30, 2020 Loans Unfunded Total exposure Services and other $ 1.0 $ 3.5 $ 4.5 Manufacturing 0.7 3.8 4.5 Energy and utilities 0.2 4.0 4.2 Media and telecom — 0.9 0.9 Total $ 1.9 $ 12.2 $ 14.1 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 overnight repurchase and reverse repurchase transactions in U.S. Treasury 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 Sept. 30, 2020 and Dec. 31, 2019, 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 Sept. 30, 2020 and Dec. 31, 2019, 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 $750 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 The Bank of New York 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. Three actions commenced in December 2014, December 2015 and February 2017 are pending in New York federal court; and one action commenced in May 2016 is pending in New York state court. A New York federal court action filed in August 2014 has been dismissed. 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. Thirteen lawsuits have been filed against Pershing in Louisiana, Florida and New Jersey federal courts in January 2010, January and February 2015, 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. All the cases that have been brought in federal court against Pershing and the case brought against The Bank of New York Mellon have been consolidated in Texas federal court for discovery purposes. On Dec. 19, 2019, the Court of Appeals for the Fifth Circuit affirmed the dismissal of six individual federal lawsuits brought under Florida law, which will also apply to four other similarly situated cases. On March 18, 2020, the plaintiffs in those lawsuits filed a Petition for Writ of Certiorari seeking permission to appeal to the United States Supreme Court. On Oct. 5, 2020, the United States Supreme Court denied the Petition. In July 2020, after being enjoined from pursuing claims before the Financial Industry Regulatory Authority, Inc. (“FINRA”), an investment firm filed an action against Pershing in Texas federal court. FINRA arbitration proceedings also have been initiated by alleged purchasers asserting similar claims. 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 has appealed that decision. 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 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 (“MPF”) 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, and the MPF has appealed that decision. In addition, the Tribunal de Contas da Uniao (“TCU”), an administrative tribunal, has initiated two proceedings with the purpose of determining liability for losses to two investment funds administered by DTVM in which Postalis was the exclusive 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 $41.7 million. TCU also imposed on DTVM a fine of approximately $1.8 million. DTVM has filed an administrative appeal of the decision. 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 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 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. 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. 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. We have not received any tax demand concerning cum/ex trading. 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 connection with the acquisition of the subject entities, we obtained an indemnity for liabilities from the sellers that we intend to pursue as necessary.

Supplemental information to the

Supplemental information to the Consolidated Statement of Cash Flows	9 Months Ended
	Sep. 30, 2020
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 Nine months ended Sept. 30, (in millions) 2020 2019 Transfers from loans to other assets for other real estate owned $ 1 $ 1 Change in assets of consolidated investment management funds 343 120 Change in liabilities of consolidated investment management funds 3 13 Change in nonredeemable noncontrolling interests of consolidated investment management funds 149 102 Securities purchased not settled 846 804 Premises and equipment/capitalized software funded by finance lease obligations — 14 Premises and equipment/operating lease obligations 126 1,440 (a) (a) Includes $1,244 million related to the adoption of ASU 2016-02, Leases

Lines of business

Lines of business	9 Months Ended
	Sep. 30, 2020
Segment Reporting [Abstract]
Lines of business	Lines of business We have an internal information system that produces performance data along product and service lines for our two principal businesses 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 2019 Annual Report. Business accounting principles Our business data has been determined on an internal management basis of accounting, rather than the generally accepted accounting principles used for consolidated financial reporting. These measurement principles are designed so that reported results of the businesses will track their economic performance. Business 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. There were no significant organizational changes in the second or third quarters of 2020. In the first quarter of 2020, we reclassified the results of certain services provided between the segments from noninterest expense to fee and other revenue. The intersegment activity is eliminated in the Other segment and relates to services that are also provided to third parties and provides consistency with the reporting of the revenues. This adjustment had no impact on income before taxes of the businesses. Also in the first quarter of 2020, we reclassified the results related to certain lending activities from the Wealth Management business to the Pershing business. These loans were originated by the Wealth Management business as a service to Pershing clients. This resulted in an increase in total revenue, noninterest expense and income before taxes in the Pershing business and corresponding decrease in the Wealth Management business. Prior periods were restated in the first quarter of 2020 for both reclassifications. The accounting policies of the businesses are the same as those described in Note 1 of the Notes to Consolidated Financial Statements in our 2019 Annual Report. The results of our businesses 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 revenue in each business. • 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 Investment Services. • Net interest revenue 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 business segment. • Incentives expense related to restricted stock is allocated to the businesses. • 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 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. • 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 revenue to the businesses generating the deposits. Accordingly, accretion related to the portion of the securities portfolio restructured in 2009 has been included in the results of the businesses. • Balance sheet assets and liabilities and their related income or expense are specifically assigned to each business. Businesses 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 businesses to our overall profitability. For the quarter ended Sept. 30, 2020 Investment Investment and Wealth Other Consolidated (dollars in millions) Total fee and other revenue $ 2,246 $ 871 (a) $ 20 $ 3,137 (a) Net interest revenue (expense) 681 47 (25) 703 Total revenue (loss) 2,927 918 (a) (5) 3,840 (a) Provision for credit losses (10) 12 7 9 Noninterest expense 2,020 661 — 2,681 Income (loss) before income taxes $ 917 $ 245 (a) $ (12) $ 1,150 (a) Pre-tax operating margin (b) 31 % 27 % N/M 30 % Average assets $ 329,324 $ 30,160 $ 55,381 $ 414,865 (a) Total fee and other revenue includes net income from consolidated investment management funds of $20 million, representing $27 million of income and noncontrolling interests of $7 million. Total revenue and income before income taxes are net of noncontrolling interests of $7 million. (b) Income before income taxes divided by total revenue. N/M - Not meaningful. For the quarter ended June 30, 2020 Investment Investment and Wealth Other Consolidated (dollars in millions) Total fee and other revenue $ 2,339 $ 838 (a) $ 38 $ 3,215 (a) Net interest revenue (expense) 768 48 (36) 780 Total revenue 3,107 886 (a) 2 3,995 (a) Provision for credit losses 145 7 (9) 143 Noninterest expense 1,989 658 39 2,686 Income (loss) before income taxes $ 973 $ 221 (a) $ (28) $ 1,166 (a) Pre-tax operating margin (b) 31 % 25 % N/M 29 % Average assets $ 335,288 $ 30,327 $ 49,744 $ 415,359 (a) Total fee and other revenue includes net income from consolidated investment management funds of $39 million, representing $54 million of income and noncontrolling interests of $15 million. Total revenue and income before income taxes are net of noncontrolling interests of $15 million. (b) Income before income taxes divided by total revenue. N/M - Not meaningful. For the quarter ended Sept. 30, 2019 Investment Investment and Wealth Other Consolidated (dollars in millions) Total fee and other revenue (loss) $ 2,296 $ 838 (a) $ (6) $ 3,128 (a) Net interest revenue (expense) 761 49 (80) 730 Total revenue (loss) 3,057 887 (a) (86) 3,858 (a) Provision for credit losses (15) — (1) (16) Noninterest expense 1,973 592 25 2,590 Income (loss) before income taxes $ 1,099 $ 295 (a) $ (110) $ 1,284 (a) Pre-tax operating margin (b) 36 % 33 % N/M 33 % Average assets $ 269,926 $ 27,840 $ 52,913 $ 350,679 (a) Total fee and other revenue includes net income from consolidated investment management funds of $— million, representing $3 million of income and noncontrolling interests of $3 million. Total revenue and income before income taxes are net of noncontrolling interests of $3 million. (b) Income before income taxes divided by total revenue. N/M - Not meaningful. For the nine months ended Sept. 30, 2020 Investment Investment and Wealth Other Consolidated (dollars in millions) Total fee and other revenue $ 7,021 $ 2,555 (a) $ 88 $ 9,664 (a) Net interest revenue (expense) 2,255 147 (105) 2,297 Total revenue (loss) 9,276 2,702 (a) (17) 11,961 (a) Provision for credit losses 284 28 9 321 Noninterest expense 5,996 2,014 69 8,079 Income (loss) before income taxes $ 2,996 $ 660 (a) $ (95) $ 3,561 (a) Pre-tax operating margin (b) 32 % 24 % N/M 30 % Average assets $ 322,924 $ 30,343 $ 51,936 $ 405,203 (a) Total fee and other revenue includes net income from consolidated investment management funds of $39 million, representing $43 million of income and noncontrolling interests of $4 million. Total revenue and income before income taxes are net of noncontrolling interests of $4 million. (b) Income before income taxes divided by total revenue. N/M - Not meaningful. For the nine months ended Sept. 30, 2019 Investment Investment and Wealth Other Consolidated (dollars in millions) Total fee and other revenue $ 6,690 $ 2,561 (a) $ 43 $ 9,294 (a) Net interest revenue (expense) 2,348 175 (150) 2,373 Total revenue (loss) 9,038 2,736 (a) (107) 11,667 (a) Provision for credit losses (11) (1) (5) (17) Noninterest expense 5,917 1,916 103 7,936 Income (loss) before income taxes $ 3,132 $ 821 (a) $ (205) $ 3,748 (a) Pre-tax operating margin (b) 35 % 30 % N/M 32 % Average assets $ 263,631 $ 29,815 $ 49,683 $ 343,129 (a) Total fee and other revenue includes net income from consolidated investment management funds of $22 million, representing $39 million of income and noncontrolling interests of $17 million. Total revenue and income before income taxes are net of noncontrolling interests of $17 million. (b) Income before income taxes divided by total revenue. N/M - Not meaningful.

Accounting changes and new ac_2

Accounting changes and new accounting guidance (Policies)	9 Months Ended
	Sep. 30, 2020
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 in our 2019 Annual Report.
Reclassifications	Certain immaterial reclassifications have been made to prior periods to place them on a basis comparable with the current period presentation.
Use of estimates	Use of estimatesThe 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 financial statements. Although our current estimates contemplate current conditions and how we expect them to change in the future, it is reasonably possible that actual conditions could be worse than anticipated in those estimates, which could materially affect our results of operations and financial condition.
Fair value measurement	Fair value measurementFair 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 2019 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 Sept. 30, 2020 and Dec. 31, 2019, 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.
Loans	LoansLoans are reported at amortized cost, net of any unearned income and deferred fees and costs. Certain loan origination and upfront commitment fees, as well as certain direct loan origination and commitment costs, are deferred and amortized as a yield adjustment over the lives of the related loans. Loans held for sale are carried at the lower of cost or fair value.
Troubled debt restructuring/loan modifications	Troubled debt restructuring/loan modifications A modified loan is considered a troubled debt restructuring (“TDR”) if the debtor is experiencing financial difficulties and the creditor grants a concession to the debtor that would not otherwise be considered. A TDR may include a transfer of real estate or other assets from the debtor to the creditor, or a modification of the term of the loan. Credit losses related to TDRs are accounted for under an individual evaluation methodology (see “Allowance for credit losses” below). Credit losses for anticipated TDRs are accounted for similarly to TDRs and are identified when there is a reasonable expectation that a TDR will be executed with the borrower and when we expect the modification to affect the timing or amount of payments and/or the payment term. Due to the coronavirus pandemic, there have been two forms of relief provided for classifying loans as TDRs: The Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”) and the Interagency Guidance (as defined below). Financial institutions may account for eligible loan modifications either under the CARES Act or the Interagency Guidance. The Company has elected to apply both the CARES Act and the Interagency Guidance, as applicable, in providing borrowers with loan modification relief in response to the coronavirus pandemic. The CARES Act, which became law on March 27, 2020, provides that financial institutions may, subject to certain conditions, elect to temporarily suspend the U.S. GAAP requirements with respect to loan modifications related to the coronavirus pandemic that were current as of Dec. 31, 2019 and that would otherwise be identified and treated as TDRs. This TDR relief is applicable to modifications that were made from March 1, 2020 until the earlier of Dec. 31, 2020 or 60 days from the date the national emergency related to the coronavirus pandemic officially ends. Various banking regulators issued guidance in the April 7, 2020 “Interagency Statement on Loan Modifications and Reporting for Financial Institutions Working with Customers Affected by the Coronavirus (revised)” (“Interagency Guidance”) on loan modification treatment pursuant to which financial institutions can apply the U.S. GAAP requirements for loan modifications. In accordance with this guidance, a loan modification is not considered a TDR if the modification is related to the coronavirus pandemic, the borrower had been current when the modification program was implemented, and the modification includes payment deferrals for not more than six months.
Nonperforming assets	Nonperforming assets Commercial loans are placed on nonaccrual status when principal or interest is past due 90 days or more, or when there is reasonable doubt that interest or principal will be collected. When a first or second lien residential mortgage loan reaches 90 days delinquent, it is subject to an individual evaluation of credit loss and placed on nonaccrual status. When a loan is placed on nonaccrual status, previously accrued and uncollected interest is reversed against current period interest revenue. Interest receipts on nonaccrual loans are recognized
Allowance for credit losses	Allowance for credit losses The accounting policy for estimating credit losses related to financial assets measured at amortized cost, including loans and lending-related commitments changed beginning in the first quarter of 2020 as a result of the adoption of ASU 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments . This ASU also included targeted amendments with respect to credit losses for available-for-sale debt securities. The accounting policy for determining the allowances has been identified as a “critical accounting estimate” as it requires us to make numerous complex and subjective estimates and assumptions relating to amounts which are judgmental and inherently uncertain. Credit quality is monitored by management and is reflected within the allowance for credit losses. The allowance represents management’s estimate of expected credit losses over the expected contractual life of the financial instruments as of the balance sheet date. The allowance methodology is designed to provide procedural discipline in assessing the appropriateness of the allowance. A quantitative methodology and qualitative framework is used to estimate the allowance for credit losses. The qualitative framework is described in further detail within “Allowance for credit losses - Other” below. The quantitative component of our estimate uses models and methodologies that categorize financial assets based on product type, collateral type, and other credit trends and risk characteristics, including relevant information about past events, current conditions and reasonable and supportable forecasts of future economic conditions that affect the collectability of the recorded amounts. The allowance may be determined using various methods, including discounted cash flow methods, loss-rate methods, probability of default methods or other methods that we determine to be appropriate. We estimate our expected credit losses using the probability of default method for the majority of our financial assets. We measure expected credit losses of financial assets on a collective (pool) basis when similar risk characteristics exist. For a financial asset that does not share risk characteristics with other assets, expected credit losses are measured based on an individual evaluation method. In our estimate, with the exception of our small home equity line of credit portfolio, available-for-sale debt securities, and individually evaluated financial assets, we utilize a multi-scenario macroeconomic forecast which includes a weighting of baseline, stronger near-term growth and moderate recession scenarios. This approach allows us to develop our estimate using a wide span of economic input variables. Our baseline scenario reflects a view on likely performance of each global region and the other two scenarios are designed relative to the baseline scenario. The scenarios include both a reasonable and supportable forecast period as well as a reversion period. The reasonable and supportable forecast is typically over a two- to three-year horizon, followed by a reversion period in which the economic data reverts to long-term historical experience. In general, the forecasts across the alternative economic scenarios tend to revert toward the long-term trends after the forecast period, which is the period in which the confidence interval is considered reasonable and supportable. The speed at which the scenario specific forecasts revert is based on observed historical patterns of mean reversion that are reflected in our model parameter estimates. Certain macroeconomic variables such as unemployment or home prices take longer to revert after a contraction, though specific recovery times are scenario-specific. Reversion will usually take longer the further away the scenario specific forecast is from the historical mean. On a quarterly basis, within a developed governance structure, we update these scenarios for current economic conditions and may adjust the scenario weighting based on our economic outlook. Allowance for credit losses - Loans and lending-related commitments The allowance for credit losses on loans is presented as a valuation allowance to loans, and the allowance for credit losses on lending-related commitments is recorded in other liabilities. The components of the allowance for credit losses on loans and lending- related commitments consist of the following three elements: • a pooled allowance component for higher risk-rated and pass-rated commercial and institutional credits; • a pooled allowance component for residential mortgage loans; and • an asset-specific allowance component involving individually evaluated credits of $1 million or greater. The first element, a pooled allowance component for higher risk-rated and pass-rated commercial and institutional credits, is based on our expected credit loss model. Individual credit analyses are performed on such loans before being assigned a credit rating. All borrowers are collectively evaluated based on their credit rating. The loss expected in each loan incorporates the borrower’s credit rating, facility rating and maturity. The loss given default, derived from the facility rating, incorporates a recovery expectation, and for unfunded lending exposures, an estimate of the use of the facility at default (usage given default). The borrower’s probability of default is derived from the associated credit rating. For each of the different parameters, specific credit models are developed for each segment of our portfolio, including commercial loans and lease financing, commercial real estate, financial institutions, and other. Segmentation is established based on risk characteristics of the loans and how risk is monitored. We use both internal and external data in the development of these parameters. In estimating the term of the exposures and resulting effect on the measurement of expected credit loss, we consider the impact of potential prepayments as well as the effect of borrower extension options. Borrower ratings are reviewed at least annually and are periodically mapped to third-party databases, including rating agency and default and recovery databases, to ensure ongoing consistency and validity. Higher risk-rated loans and lending-related commitments are reviewed quarterly. The second element, a pooled allowance component for residential mortgage loans, is determined by first segregating our mortgage pools into two categories: (i) our wealth management mortgages and (ii) our legacy mortgage portfolio disclosed as other residential mortgages. We then apply models to each portfolio to predict prepayments, default rates and loss severity. We consider historical loss experience and use a loan-level, multi-period default model which further segments each portfolio by product type including first lien fixed rate mortgages, first lien adjustable rate mortgages, second lien mortgages, and interest-only mortgages. We calculate the mortgage loss up to loan contractual maturity and embed a reasonable and supportable forecast and macroeconomic variable inputs which are described above. For home equity lines of credit, probability of default and loss given default are based on external data from third-party databases due to the small size of the portfolio and limited internal data. Our legacy mortgage portfolio and home equity line of credit portfolios represent small sub-segments of our mortgage loans. The third element, individually evaluated credits, is based on individual analysis of loans of $1 million and greater which no longer share the risk characteristics with other loans. Factors we consider in measuring the extent of expected credit loss include the payment status, collateral value, the borrower’s financial condition, guarantor support, the probability of collecting scheduled principal and interest payments when due, anticipated modifications of payment structure or term for troubled borrowers, and recoveries if they can be reasonably estimated. We measure the expected credit loss as the difference between the amortized cost basis in the loan and the present value of the expected future cash flows from the borrower which is generally discounted at the loan’s effective interest rate, or the fair value of the collateral, if the loan is collateral dependent. We generally consider nonperforming loans as well as loans that have been or are anticipated to be modified under a troubled debt restructuring for individual evaluation given the risk characteristics of such loans. Allowance for credit losses - Securities - Debt When estimating expected credit losses, we segment our available-for-sale and held-to-maturity debt securities portfolios by major asset class. This is influenced by whether the security is structured or non-structured (i.e., direct obligation), as well as the issuer type. Debt securities are classified as available-for-sale securities when we intend to hold the securities for an indefinite period of time or when the securities may be used for tactical asset/liability management purposes and may be sold from time to time to effectively manage interest rate exposure, prepayment risk and liquidity needs. Available-for-sale securities are measured at fair value. The difference between fair value and amortized cost represents the unrealized gains or losses on assets classified as available-for-sale, and is recorded net of tax as an addition to, or deduction from, other comprehensive income, unless we determine that this difference or a portion thereof represents an expected credit loss. If we determine that a credit loss exists, the amount is recognized as an allowance for credit losses in securities - available-for sale, with a corresponding adjustment to the provision for credit losses. We evaluate credit losses at the individual security level and do not recognize credit losses if the fair value exceeds amortized cost, and if we determine that a credit loss exists, we limit the recognition of the loss to the difference between fair value and amortized cost. In our determination of whether an expected credit loss exists, we routinely conduct periodic reviews and examine various quantitative and qualitative factors that are unique to each portfolio, including the severity of the unrealized loss position, agency rating, credit enhancement, cash flow deterioration and other factors. The measurement of an expected credit loss is then based on the best estimate of the present value of cash flows to be collected from the debt security. Generally, cash flows are discounted at the effective interest rate implicit in the debt security. Changes to the present value of cash flows due to the passage of time are recognized within the allowance for credit losses. We estimate expected credit losses for held-to-maturity debt securities using a similar methodology as described in the first allowance element within “Allowance for credit losses - Loans and lending-related commitments” above. The allowance for credit losses on held-to-maturity debt securities are recorded in securities - held-to-maturity. The components of the credit loss calculation for each major portfolio or asset class include a probability of default and loss given default and their values depend on the forecast behavior of variables in the macroeconomic environment. For structured debt securities, we estimated expected credit losses at the individual security level and use a cash flow model to project principal losses. Generally, cash flows are discounted at the effective interest rate implicit in the debt security. The difference is reflected in the allowance for credit losses, and changes to the present value of cash flows due to the passage of time are recognized within the allowance for credit losses. We currently do not require an estimate of expected credit losses to be measured and recorded for U.S. Treasury securities, agency debt securities, as well as other debt securities that meet certain conditions that are based on a combination of factors such as guarantees, credit ratings, and other credit quality factors. These assets are monitored within our established governance structure on a recurring basis to determine if any changes are warranted. Allowance for credit losses – Other financial instruments We also estimate expected credit losses associated with margin loans, reverse repurchase agreements, security lending indemnifications, and deposits with third-party financial institutions using a similar methodology as described in the first allowance element within “Allowance for credit losses - Loans and lending-related commitments” above. The allowance for credit losses on reverse repurchase agreements are recorded in federal funds sold and securities purchased under resale agreements; the allowance for credit losses on securities lending indemnifications is recorded in other liabilities and the allowance for credit losses on deposits with third-party financial institutions is recorded in cash and due from banks or interest-bearing deposits with banks. Our reverse repurchase agreements are short term and subject to continuous overcollateralization by our counterparties and timely collateral replenishment, when necessary. As a result, we estimate the expected credit loss related to the uncollateralized portion of the asset at the balance sheet date, if any, and when there is a reasonable expectation that the counterparty will not replenish the collateral in compliance with the terms of the repurchase agreement. This method is also applied to margin lending arrangements and securities lending indemnifications. Allowance for credit losses - Other We do not apply our credit loss measurement methodologies to accrued interest receivable balances related to our loan, debt securities and deposits with third party financial institutions assets given our nonaccrual policy that requires charge-off of interest receivable when deemed uncollectible. Accrued interest receivable related to these instruments is presented in total with other interest-bearing instruments in the consolidated balance sheet. Accrued interest receivable related to each major loan class is disclosed within our credit quality disclosure in Note 5. Our policy for credit losses related to purchased financial assets requires an evaluation to be performed prior to the effective purchase date to determine if more than an insignificant decline in credit quality has occurred during the period between the origination and purchase date, or, in the case of debt securities, the period between the issuance and purchase date. If we purchase a financial asset with more than insignificant deterioration in credit quality, the measurement of expected credit loss is performed using the methodologies described above, and the credit loss is recorded as an allowance for credit losses on the purchase date. Subsequent to purchase, changes (favorable and unfavorable) in expected cash flows are recognized immediately in net income by adjusting the allowance. We evaluate various factors in the determination of whether a more than an insignificant decline in credit quality has occurred and these factors vary depending upon the type of asset purchased. Such factors include changes in risk rating and/or agency rating, collateral deterioration, payment status, purchase price, credit spreads, and other factors. We did not purchase any such assets during the first nine months of 2020 and did not own such assets as of Sept. 30, 2020. We apply a separate credit loss methodology to accounts receivables to estimate the expected credit losses associated with these short-term receivables which historically have not resulted in significant credit losses. The allowance for credit losses on accounts receivable is reflected in other assets. The qualitative component of our estimate for the allowance for credit losses is intended to capture expected losses that may not have been fully captured in the quantitative component. Through an established governance structure, management determines the qualitative allowance each period based on an evaluation of various internal and environmental factors which include: scenario weighting and sensitivity risk, credit concentration risk, economic conditions and other considerations. We may also make adjustments for idiosyncratic

Accounting changes and new ac_3

Accounting changes and new accounting guidance (Tables)	9 Months Ended
	Sep. 30, 2020
Accounting Policies [Abstract]
Reconciliation of Allowance for Credit Losses	The table below presents the reconciliation of the allowance for credit losses (pre-tax). Allowance for credit losses (in millions) Allowance for credit losses – Dec. 31, 2019 $ 216 Impact of adopting ASU 2016-13: Securities 7 Loans (a) (69) Other 3 Total impact of adoption of ASU 2016-13 (59) Reclassification of credit-related reserves on accounts receivable 4 Allowance for credit losses – Jan. 1, 2020 $ 161 (a) Includes $48 million related to loans and $21 million for lending-related commitments.

Securities (Tables)

Securities (Tables)	9 Months Ended
	Sep. 30, 2020
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 Sept. 30, 2020 and Dec. 31, 2019. Securities at Sept. 30, 2020 Gross Fair Amortized cost (in millions) Gains Losses Available-for-sale: Agency RMBS $ 24,262 $ 526 $ 55 $ 24,733 U.S. Treasury 23,166 1,568 1 24,733 Sovereign debt/sovereign guaranteed 13,925 169 1 14,093 Agency commercial mortgage-backed securities (“MBS”) 9,299 646 3 9,942 Supranational 7,069 68 1 7,136 Foreign covered bonds 5,777 64 — 5,841 Collateralized loan obligations (“CLOs”) 4,696 5 44 4,657 Foreign government agencies 3,924 46 — 3,970 U.S. government agencies 3,300 180 2 3,478 Other asset-backed securities (“ABS”) 2,903 31 4 2,930 Non-agency commercial MBS 2,565 156 10 2,711 Non-agency RMBS (a) 1,793 157 9 1,941 State and political subdivisions 1,661 33 4 1,690 Corporate bonds 988 43 1 1,030 Commercial paper/certificates of deposit (“CDs”) 355 2 — 357 Other debt securities 1 — — 1 Total securities available-for-sale (b)(c) $ 105,684 $ 3,694 $ 135 $ 109,243 Held-to-maturity: Agency RMBS $ 37,086 $ 1,117 $ 10 $ 38,193 U.S. Treasury 3,288 103 — 3,391 U.S. government agencies 2,266 5 4 2,267 Agency commercial MBS 2,041 107 — 2,148 Sovereign debt/sovereign guaranteed 983 41 — 1,024 Commercial paper/CDs 295 — — 295 Non-agency RMBS 70 3 1 72 Supranational 52 1 — 53 State and political subdivisions 15 — — 15 Total securities held-to-maturity $ 46,096 $ 1,377 $ 15 $ 47,458 Total securities $ 151,780 $ 5,071 $ 150 $ 156,701 (a) Includes $512 million that was included in the former Grantor Trust. (b) In the first quarter of 2020, we adopted new accounting guidance included in ASU 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments, on a prospective basis. The amortized cost of available-for-sale securities is net of the allowance for credit loss of $12 million. The allowance for credit loss primarily relates to CLOs. See Note 2 for additional information. (c) Includes gross unrealized gains of $25 million and gross unrealized losses of $49 million recorded in accumulated other comprehensive income related to securities that were transferred from available-for-sale to held-to-maturity. The unrealized gains and losses are primarily related to Agency RMBS and will be amortized into net interest revenue over the contractual lives of the securities. Securities at Dec. 31, 2019 Gross Amortized cost Fair (in millions) Gains Losses Available-for-sale: Agency RMBS $ 27,022 $ 164 $ 143 $ 27,043 U.S. Treasury 14,979 472 20 15,431 Sovereign debt/sovereign guaranteed 12,548 109 11 12,646 Agency commercial MBS 9,231 203 17 9,417 Foreign covered bonds 4,189 15 7 4,197 CLOs 4,078 1 16 4,063 Supranational 3,697 18 6 3,709 Foreign government agencies 2,638 7 2 2,643 Non-agency commercial MBS 2,134 46 2 2,178 Other ABS 2,141 7 5 2,143 U.S. government agencies 1,890 61 2 1,949 Non-agency RMBS (a) 1,038 202 7 1,233 State and political subdivisions 1,017 27 — 1,044 Corporate bonds 832 21 — 853 Other debt securities 1 — — 1 Total securities available-for-sale (b) $ 87,435 $ 1,353 $ 238 $ 88,550 Held-to-maturity: Agency RMBS $ 27,357 $ 292 $ 46 $ 27,603 U.S. Treasury 3,818 28 3 3,843 Agency commercial MBS 1,326 21 3 1,344 U.S. government agencies 1,023 1 2 1,022 Sovereign debt/sovereign guaranteed 756 31 — 787 Non-agency RMBS 80 4 1 83 Foreign covered bonds 79 — — 79 Supranational 27 — — 27 State and political subdivisions 17 — — 17 Total securities held-to-maturity $ 34,483 $ 377 $ 55 $ 34,805 Total securities $ 121,918 $ 1,730 $ 293 $ 123,355 (a) Includes $640 million that was included in the former Grantor Trust. (b) Includes gross unrealized gains of $32 million and gross unrealized losses of $65 million recorded in accumulated other comprehensive income related to securities that were transferred from available-for-sale to held-to-maturity. The unrealized gains and losses are primarily related to Agency RMBS and will be amortized into net interest revenue over the contractual lives of the securities.
Schedule of Realized Gains, Losses, and Impairments	The following table presents the realized gains, losses and impairments, on a gross basis. Net securities gains (losses) (in millions) 3Q20 2Q20 3Q19 YTD20 YTD19 Realized gross gains $ 10 $ 16 $ 1 $ 38 $ 18 Realized gross losses (1) (7) (1) (11) (10) Recognized gross impairments — — (1) — (1) Total net securities gains (losses) $ 9 $ 9 $ (1) $ 27 $ 7
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) 3Q20 2Q20 3Q19 YTD20 YTD19 Foreign government agencies $ 5 $ 2 $ — $ 7 $ — U.S. Treasury 1 1 — 7 4 Supranational — 6 — 6 — Sovereign debt/sovereign guaranteed 1 2 — 3 3 State and political subdivisions — — — — 2 Other 2 (2) (1) 4 (2) Total net securities gains (losses) $ 9 $ 9 $ (1) $ 27 $ 7
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	The following table shows 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 Sept. 30, 2020 (a) Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized (in millions) Agency RMBS $ 1,126 $ 3 $ 2,102 $ 52 $ 3,228 $ 55 U.S. Treasury 1,041 1 — — 1,041 1 Sovereign debt/sovereign guaranteed 1,069 1 119 — 1,188 1 Agency commercial MBS 566 1 306 2 872 3 Supranational 1,583 1 127 — 1,710 1 CLOs 3,449 31 579 13 4,028 44 U.S. government agencies 99 2 — — 99 2 Other ABS 675 2 229 2 904 4 Non-agency commercial MBS 358 6 194 4 552 10 Non-agency RMBS (b) 636 3 97 6 733 9 State and political subdivisions 262 4 2 — 264 4 Corporate bonds 173 1 — — 173 1 Total securities available-for-sale (c) $ 11,037 $ 56 $ 3,755 $ 79 $ 14,792 $ 135 (a) Includes $370 million of securities with an unrealized loss of greater than $1 million. (b) Includes $22 million of securities with an unrealized loss of $1 million for less than 12 months and $1 million of securities with an unrealized loss of less than $1 million for 12 months or more that were included in the former Grantor Trust. (c) Includes gross unrealized losses of $49 million 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. The unrealized losses are primarily related to Agency RMBS and will be amortized into net interest revenue over the contractual lives of the securities. There were no gross unrealized losses for less than 12 months. The following table presents the temporarily impaired securities under the disclosure guidance that existed prior to the adoption of ASU 2016-13 and shows 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. Temporarily impaired securities at Dec. 31, 2019 Less than 12 months 12 months or more Total (in millions) Fair Unrealized Fair Unrealized Fair Unrealized Available-for-sale: Agency RMBS $ 8,373 $ 33 $ 5,912 $ 110 $ 14,285 $ 143 U.S. Treasury 1,976 16 766 4 2,742 20 Sovereign debt/sovereign guaranteed 4,045 10 225 1 4,270 11 Agency commercial MBS 1,960 12 775 5 2,735 17 Foreign covered bonds 1,009 4 690 3 1,699 7 CLOs 1,066 2 1,499 14 2,565 16 Supranational 1,336 6 360 — 1,696 6 Foreign government agencies 1,706 2 47 — 1,753 2 Non-agency commercial MBS 525 2 45 — 570 2 Other ABS 456 3 305 2 761 5 U.S. government agencies 377 2 — — 377 2 Non-agency RMBS (a) 101 — 113 7 214 7 State and political subdivisions — — 16 — 16 — Corporate bonds 82 — 21 — 103 — Total securities available-for-sale (b) $ 23,012 $ 92 $ 10,774 $ 146 $ 33,786 $ 238 (a) Includes $2 million of securities with an unrealized loss of less than $1 million for less than 12 months and $2 million of securities with an unrealized loss of less than $1 million for 12 months or more that were included in the former Grantor Trust. (b) Includes gross unrealized losses of $65 million 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. The unrealized losses are primarily related to Agency RMBS and will be amortized into net interest revenue over the contractual lives of the securities. There were no gross unrealized losses for less than 12 months.
Debt Securities, Held-to-maturity, Credit Quality Indicator	The following table shows 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 a reduction in the fair value of our securities portfolio. Held-to-maturity securities portfolio at Sept. 30, 2020 (a) Ratings (b) Net unrealized gain BB+ A1+/A2/SP-1+ (dollars in millions) Amortized AAA/ A+/ BBB+/ Not Agency RMBS $ 37,086 $ 1,107 100 % — % — % — % — % — % U.S. Treasury 3,288 103 100 — — — — — U.S. government agencies 2,266 1 100 — — — — — Agency commercial MBS 2,041 107 100 — — — — — Sovereign debt/sovereign guaranteed (c) 983 41 100 — — — — — Commercial paper/CDs 295 — — — — — 100 — Non-agency RMBS 70 2 39 46 2 12 — 1 Supranational 52 1 100 — — — — — State and political subdivisions 15 — 6 2 6 — — 86 Total held-to-maturity securities $ 46,096 $ 1,362 99 % — % — % — % 1 % — % (a) In the first quarter of 2020, we adopted new accounting guidance included in ASU 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments, on a prospective basis. See Note 2 for additional information. (b) Represents ratings by Standard & Poor’s (“S&P”) or the equivalent. (c) Primarily consists of exposure to France, UK and Germany.
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 Sept. 30, 2020 U.S. Treasury U.S. government State and political Other bonds, notes and debentures Mortgage/ (dollars in millions) Amount Yield (a) Amount Yield (a) Amount Yield (a) Amount Yield (a) Amount Yield (a) Total Securities available-for-sale: One year or less $ 4,405 1.11 % $ 25 2.55 % $ 549 1.49 % $ 11,186 0.44 % $ — — % $ 16,165 Over 1 through 5 years 10,546 1.28 1,866 0.85 570 3.16 17,769 0.61 — — 30,751 Over 5 through 10 years 6,517 1.57 1,468 2.51 223 1.88 3,240 0.56 — — 11,448 Over 10 years 3,265 3.11 119 2.06 348 2.22 233 0.62 — — 3,965 Mortgage-backed securities — — — — — — — — 39,327 2.18 39,327 Asset-backed securities — — — — — — — — 7,587 1.72 7,587 Total $ 24,733 1.57 % $ 3,478 1.60 % $ 1,690 2.26 % $ 32,428 0.55 % $ 46,914 2.10 % $ 109,243 Securities held-to-maturity: One year or less $ 785 1.43 % $ — — % $ — — % $ 307 1.99 % $ — — % $ 1,092 Over 1 through 5 years 2,503 1.90 1,253 0.82 2 5.66 946 0.67 — — 4,704 Over 5 through 10 years — — 564 1.13 — — 32 0.92 — — 596 Over 10 years — — 449 2.28 13 4.76 45 0.35 — — 507 Mortgage-backed securities — — — — — — — — 39,197 2.57 39,197 Total $ 3,288 1.79 % $ 2,266 1.19 % $ 15 4.91 % $ 1,330 0.96 % $ 39,197 2.57 % $ 46,096 (a) Yields are based upon the amortized cost of securities.

Loans and asset quality (Tables

Loans and asset quality (Tables)	9 Months Ended
	Sep. 30, 2020
Receivables [Abstract]
Schedule of Loan Portfolio and Industry Concentrations of Credit Risk	The table below provides the details of our loan portfolio. Loans Sept. 30, 2020 Dec. 31, 2019 (in millions) Domestic: Commercial $ 1,839 $ 1,442 Commercial real estate 5,987 5,575 Financial institutions 4,915 4,852 Lease financings 482 537 Wealth management loans and mortgages 15,805 16,050 Other residential mortgages 423 494 Overdrafts 899 524 Other 1,616 1,167 Margin loans 11,220 11,907 Total domestic 43,186 42,548 Foreign: Commercial 102 347 Commercial real estate 5 7 Financial institutions 6,097 7,626 Lease financings 596 576 Wealth management loans and mortgages 121 140 Other (primarily overdrafts) 3,106 2,230 Margin loans 2,278 1,479 Total foreign 12,305 12,405 Total loans (a) $ 55,491 $ 54,953 (a) Net of unearned income of $285 million at Sept. 30, 2020 and $313 million at Dec. 31, 2019 primarily related to domestic and foreign 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, held-to-maturity securities, available-for-sale securities and accounts receivable. Allowance for credit losses activity for the quarter ended Sept. 30, 2020 Wealth management loans and mortgages Other (in millions) Commercial Commercial Financial Lease Total Beginning balance $ 40 $ 372 $ 16 $ 3 $ 11 $ 12 $ 454 Charge-offs — — — — — — — Recoveries — — — — — 1 1 Net recoveries — — — — — 1 1 Provision (a) (13) 14 (5) — 4 5 5 Ending balance (b) $ 27 $ 386 $ 11 $ 3 $ 15 $ 18 $ 460 Allowance for: Loan losses $ 14 $ 270 $ 7 $ 3 $ 13 $ 18 $ 325 Lending-related commitments 13 116 4 — 2 — 135 Individually evaluated for impairment: Loan balance $ — $ — $ — $ — $ 17 (c) $ — $ 17 Allowance for loan losses — — — — — — — (a) Does not include provision for credit losses related to other financial instruments of $4 million for the third quarter 2020. (b) Includes $8 million of allowance for credit losses related to foreign loans, primarily financial institutions. (c) Includes collateral dependent loans of $17 million with $25 million of collateral at fair value. Allowance for credit losses activity for the quarter ended June 30, 2020 Wealth management loans and mortgages Other (in millions) Commercial Commercial Financial Lease Total Beginning balance $ 26 $ 208 $ 18 $ 13 $ 9 $ 14 $ 288 Charge-offs — — — — — — — Recoveries — — — — — 3 3 Net recoveries — — — — — 3 3 Provision (a) 14 164 (2) (10) 2 (5) 163 Ending balance (b) $ 40 $ 372 $ 16 $ 3 $ 11 $ 12 $ 454 Allowance for: Loan losses $ 23 $ 244 $ 11 $ 3 $ 9 $ 12 $ 302 Lending-related commitments 17 128 5 — 2 — 152 Individually evaluated for impairment: Loan balance $ — $ — $ — $ — $ 18 (c) $ — $ 18 Allowance for loan losses — — — — — — — (a) Does not include provision for credit losses related to other financial instruments of $(20) million for the second quarter 2020. (b) Includes $11 million of allowance for credit losses related to foreign loans, primarily financial institutions. (c) Includes collateral dependent loans of $18 million with $26 million of collateral at fair value. Allowance for credit losses activity for the quarter ended Sept. 30, 2019 Wealth management loans and mortgages Other All Foreign Total (in millions) Commercial Commercial Financial Lease Beginning balance $ 77 $ 72 $ 21 $ 4 $ 20 $ 14 $ — $ 33 $ 241 Charge-offs (1) — — — — — — — (1) Recoveries — — — — — — — — — Net (charge-offs) (1) — — — — — — — (1) Provision (15) 5 — (1) — — — (5) (16) Ending balance $ 61 $ 77 $ 21 $ 3 $ 20 $ 14 $ — $ 28 $ 224 Allowance for: Loan losses $ 10 $ 57 $ 7 $ 3 $ 17 $ 14 $ — $ 19 $ 127 Lending-related commitments 51 20 14 — 3 — — 9 97 Individually evaluated for impairment: Loan balance $ — $ — $ — $ — $ 16 $ — $ — $ — $ 16 Allowance for loan losses — — — — — — — — — Collectively evaluated for impairment: Loan balance $ 1,335 $ 5,292 $ 4,973 $ 559 $ 15,748 $ 520 $ 12,567 (a) $ 13,871 $ 54,865 Allowance for loan losses 10 57 7 3 17 14 — 19 127 (a) Includes $1,247 million of domestic overdrafts, $10,177 million of margin loans and $1,143 million of other loans at Sept. 30, 2019. Allowance for credit losses activity for the nine months ended Sept. 30, 2020 Wealth management loans and mortgages Other Foreign Total (in millions) Commercial Commercial Financial Lease (a) Balance at Dec. 31, 2019 $ 60 $ 76 $ 20 $ 3 $ 20 $ 13 $ 24 $ 216 Impact of adopting ASU 2016-13 (43) 14 (6) — (12) 2 (24) (69) Balance at Jan. 1, 2020 17 90 14 3 8 15 — 147 Charge-offs — — — — — — — — Recoveries — — — — — 4 — 4 Net recoveries — — — — — 4 — 4 Provision (b) 10 296 (3) — 7 (1) — 309 Ending balance $ 27 $ 386 $ 11 $ 3 $ 15 $ 18 $ — $ 460 (a) The allowance related to foreign exposure has been reclassified to financial institutions ($10 million), commercial ($10 million) and lease financings ($4 million). (b) Does not include provision for credit losses related to other financial instruments of $12 million for the nine months ended Sept. 30, 2020. Allowance for credit losses activity for the nine months ended Sept. 30, 2019 Wealth management loans and mortgages Other All Foreign Total (in millions) Commercial Commercial Financial Lease Beginning balance $ 81 $ 75 $ 22 $ 5 $ 21 $ 16 $ — $ 32 $ 252 Charge-offs (12) — — — (1) — — — (13) Recoveries — — — — — 2 — — 2 Net (charge-offs) recoveries (12) — — — (1) 2 — — (11) Provision (8) 2 (1) (2) — (4) — (4) (17) Ending balance $ 61 $ 77 $ 21 $ 3 $ 20 $ 14 $ — $ 28 $ 224
Distribution of Nonperforming Assets	The table below presents our nonperforming assets. Nonperforming assets Sept. 30, 2020 Dec. 31, 2019 Recorded investment With an Without an allowance (in millions) Total Nonperforming loans: Other residential mortgages $ 56 $ — $ 56 $ 62 Wealth management loans and mortgages 10 17 27 24 Total nonperforming loans 66 17 83 86 Other assets owned — 1 1 3 Total nonperforming assets $ 66 $ 18 $ 84 $ 89
Information about Past Due Loans	The table below presents our past due loans. Past due loans and still accruing interest Sept. 30, 2020 Dec. 31, 2019 Days past due Total Days past due Total (in millions) 30-59 60-89 ≥90 30-59 60-89 ≥90 Wealth management loans and mortgages $ 20 $ 1 $ — $ 21 $ 22 $ 5 $ — $ 27 Other residential mortgages 7 — — 7 8 3 — 11 Financial institutions — — — — 1 30 — 31 Commercial real estate 9 — — 9 6 12 — 18 Total past due loans $ 36 $ 1 $ — $ 37 $ 37 $ 50 $ — $ 87
Credit Profile of Loan Portfolio by Origination	The table below provides information about the credit profile of the loan portfolio by the period of origination. Credit profile of the loan portfolio Sept. 30, 2020 Revolving loans Originated, at amortized cost Amortized cost Converted to term loans - Amortized cost Accrued (in millions) YTD20 2019 2018 2017 2016 Prior to 2016 Total (a) Commercial: Investment grade $ 153 $ 73 $ 96 $ 450 $ 57 $ — $ 893 $ — $ 1,722 Non-investment grade 85 61 7 — — — 66 — 219 Total commercial 238 134 103 450 57 — 959 — 1,941 $ 1 Commercial real estate: Investment grade 611 1,065 542 543 385 430 175 — 3,751 Non-investment grade 160 526 604 159 367 152 244 29 2,241 Total commercial real estate 771 1,591 1,146 702 752 582 419 29 5,992 8 Financial institutions: Investment grade 60 238 47 125 14 165 8,471 — 9,120 Non-investment grade 98 36 — — — — 1,758 — 1,892 Total financial institutions 158 274 47 125 14 165 10,229 — 11,012 13 Wealth management loans and mortgages: Investment grade 31 80 11 149 56 85 7,235 — 7,647 Non-investment grade — — — — — — 63 — 63 Wealth management mortgages 781 1,082 682 1,267 1,622 2,748 34 — 8,216 Total wealth management loans and mortgages 812 1,162 693 1,416 1,678 2,833 7,332 — 15,926 29 Lease financings 126 19 17 10 25 881 — — 1,078 — Other residential mortgages — — — — — 423 — — 423 2 Other loans — — — — — — 1,658 — 1,658 1 Margin loans 3,553 — — — — — 9,945 — 13,498 7 Total loans $ 5,658 $ 3,180 $ 2,006 $ 2,703 $ 2,526 $ 4,884 $ 30,542 $ 29 $ 51,528 $ 61 (a) Excludes overdrafts of $3,963 million. Overdrafts occur on a daily basis primarily in the custody and securities clearance business and are generally repaid within two

Goodwill and intangible assets

Goodwill and intangible assets (Tables)	9 Months Ended
	Sep. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Breakdown of Goodwill by Business	The tables below provide a breakdown of goodwill by business. Goodwill by business (in millions) Investment Investment and Wealth Other Consolidated Balance at Dec. 31, 2019 $ 8,332 $ 9,007 $ 47 $ 17,386 Foreign currency translation 21 (50) — (29) Other (a) 47 — (47) — Balance at Sept. 30, 2020 $ 8,400 $ 8,957 $ — $ 17,357 (a) Reflects the transfer of goodwill associated with the Capital Markets business. Goodwill by business (in millions) Investment Investment and Wealth Management Other Consolidated Balance at Dec. 31, 2018 $ 8,333 $ 8,970 $ 47 $ 17,350 Foreign currency translation (45) (57) — (102) Balance at Sept. 30, 2019 $ 8,288 $ 8,913 $ 47 $ 17,248
Breakdown of Intangible Assets by Business	The tables below provide a breakdown of intangible assets by business. Intangible assets – net carrying amount by business (in millions) Investment Investment and Wealth Management Other Consolidated Balance at Dec. 31, 2019 $ 678 $ 1,580 $ 849 $ 3,107 Amortization (54) (24) — (78) Foreign currency translation 1 (4) — (3) Balance at Sept. 30, 2020 $ 625 $ 1,552 $ 849 $ 3,026 Intangible assets – net carrying amount by business (in millions) Investment Investment and Wealth Management Other Consolidated Balance at Dec. 31, 2018 $ 758 $ 1,613 $ 849 $ 3,220 Amortization (61) (28) — (89) Foreign currency translation (1) (6) — (7) Balance at Sept. 30, 2019 $ 696 $ 1,579 $ 849 $ 3,124
Breakdown of Intangible Assets by Type	The table below provides a breakdown of intangible assets by type. Intangible assets Sept. 30, 2020 Dec. 31, 2019 (in millions) Gross Accumulated Net Remaining Gross Accumulated Net Subject to amortization: (a) Customer contracts—Investment Services $ 1,482 $ (1,228) $ 254 10 years $ 1,520 $ (1,214) $ 306 Customer relationships—Investment and Wealth Management 711 (563) 148 10 years 712 (544) 168 Other 64 (21) 43 14 years 64 (16) 48 Total subject to amortization 2,257 (1,812) 445 10 years 2,296 (1,774) 522 Not subject to amortization: (b) Tradenames 1,292 N/A 1,292 N/A 1,293 N/A 1,293 Customer relationships 1,289 N/A 1,289 N/A 1,292 N/A 1,292 Total not subject to amortization 2,581 N/A 2,581 N/A 2,585 N/A 2,585 Total intangible assets $ 4,838 $ (1,812) $ 3,026 N/A $ 4,881 $ (1,774) $ 3,107 (a) Excludes fully amortized intangible assets. (b) Intangible assets not subject to amortization have an indefinite life.
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) 2020 $ 104 2021 81 2022 63 2023 52 2024 45

Other assets (Tables)

Other assets (Tables)	9 Months Ended
	Sep. 30, 2020
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 Sept. 30, 2020 Dec. 31, 2019 (in millions) Corporate/bank-owned life insurance $ 5,276 $ 5,219 Accounts receivable 3,549 3,802 Fails to deliver 2,192 1,671 Software 1,832 1,590 Prepaid pension assets 1,599 1,464 Equity in a joint venture and other investments 1,190 1,102 Renewable energy investments 1,057 1,144 Qualified affordable housing project investments 997 1,024 Prepaid expense 522 491 Federal Reserve Bank stock 478 466 Income taxes receivable 332 388 Seed capital 200 184 Fair value of hedging derivatives 56 21 Other (a) 1,499 1,655 Total other assets $ 20,779 $ 20,221 (a) At Sept. 30, 2020 and Dec. 31, 2019, other assets include $8 million and $22 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) 3Q20 2Q20 3Q19 YTD20 YTD19 Upward adjustments $ 4 $ 2 $ 1 $ 10 $ 3 $ 42 Downward adjustments — — — — (1) (4) Net adjustments $ 4 $ 2 $ 1 $ 10 $ 2 $ 38
Summary of Investments Valued Using NAV	The table below presents information on our investments valued using NAV. Investments valued using NAV Sept. 30, 2020 Dec. 31, 2019 (in millions) Fair value Unfunded Fair value Unfunded Seed capital (a) $ 44 $ 11 $ 59 $ — Private equity investments (SBICs) (b) 97 55 89 55 Other (c) 43 — 33 — Total $ 184 $ 66 $ 181 $ 55 (a) Primarily includes leveraged loans and structured credit funds, which are generally not redeemable. Distributions from such investments will be received as the underlying investments in the funds, which have lives of six of six years at Dec. 31, 2019, are liquidated. (b) Private equity investments 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)	9 Months Ended
	Sep. 30, 2020
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following table presents fee 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 the generally accepted accounting principles used for consolidated financial reporting. Disaggregation of contract revenue by business segment Quarter ended Sept. 30, 2020 June 30, 2020 Sept. 30, 2019 (a) (in millions) IS IWM Other Total IS IWM Other Total IS IWM Other Total Fee revenue - contract revenue: Investment services fees: Asset servicing fees $ 1,143 $ 25 $ (13) $ 1,155 $ 1,147 $ 25 $ (15) $ 1,157 $ 1,106 $ 20 $ (5) $ 1,121 Clearing services fees 397 — — 397 431 — — 431 419 — — 419 Issuer services fees 296 — — 296 277 — — 277 324 — — 324 Treasury services fees 153 1 (2) 152 144 — 1 145 140 — — 140 Total investment services fees 1,989 26 (15) 2,000 1,999 25 (14) 2,010 1,989 20 (5) 2,004 Investment management and performance fees 4 838 (3) 839 4 792 (5) 791 4 829 (4) 829 Financing-related fees 13 1 1 15 23 1 — 24 14 — — 14 Distribution and servicing (2) 31 — 29 (7) 34 — 27 (12) 45 — 33 Investment and other income 57 (33) (2) 22 62 (41) 3 24 72 (50) — 22 Total fee revenue - contract revenue 2,061 863 (19) 2,905 2,081 811 (16) 2,876 2,067 844 (9) 2,902 Fee and other revenue - not in scope of Accounting Standards Codification (“ASC”) 606 (b)(c) 185 8 39 232 258 27 54 339 229 (6) 3 226 Total fee and other revenue (loss) $ 2,246 $ 871 $ 20 $ 3,137 $ 2,339 $ 838 $ 38 $ 3,215 $ 2,296 $ 838 $ (6) $ 3,128 (a) Restated to reflect the first quarter 2020 business segment reclassifications. There was no impact on total revenue, by type or in aggregate. See Note 19 for additional information related to the reclassifications. (b) Primarily includes foreign exchange and other trading revenue, financing-related fees, investment and other income (loss), asset servicing fees and net securities gains (losses), all of which are accounted for using other accounting guidance. (c) The Investment and Wealth Management business segment includes income fr om consolidated investment management funds, net of noncontrolling interests, of $20 million in the third quarter of 2020, $39 million in the second quarter of 2020 and $— million in the third quarter of 2019. IS - Investment Services business segment. IWM - Investment and Wealth Management business segment. Disaggregation of contract revenue by business segment Year-to-date Sept. 30, 2020 Sept. 30, 2019 (a) (in millions) IS IWM Other Total IS IWM Other Total Fee revenue - contract revenue: Investment services fees: Asset servicing fees $ 3,417 $ 73 $ (39) $ 3,451 $ 3,282 $ 60 $ (19) $ 3,323 Clearing services fees 1,298 — — 1,298 1,228 — (1) 1,227 Issuer services fees 836 — — 836 866 — — 866 Treasury services fees 446 1 (1) 446 412 1 — 413 Total investment services fees 5,997 74 (40) 6,031 5,788 61 (20) 5,829 Investment management and performance fees 13 2,492 (12) 2,493 12 2,503 (12) 2,503 Financing-related fees 64 2 1 67 47 — 1 48 Distribution and servicing (21) 108 — 87 (39) 134 — 95 Investment and other income 191 (124) 1 68 210 (147) — 63 Total fee revenue - contract revenue 6,244 2,552 (50) 8,746 6,018 2,551 (31) 8,538 Fee and other revenue - not in scope of ASC 606 (b)(c) 777 3 138 918 672 10 74 756 Total fee and other revenue $ 7,021 $ 2,555 $ 88 $ 9,664 $ 6,690 $ 2,561 $ 43 $ 9,294 (a) Restated to reflect the first quarter 2020 business segment reclassifications. There was no impact on total revenue, by type or in aggregate. See Note 19 for additional information related to the reclassifications. (b) Primarily includes foreign exchange and other trading revenue, financing-related fees, investment and other income (loss), asset servicing fees and net securities gains (losses), all of which are accounted for using other accounting guidance. (c) The Investment and Wealth Management business segment includes income from consolidated investment management funds, net of noncontrolling interests, of $39 million in the first nine months of 2020 and $22 million in the first nine months of 2019. IS - Investment Services business segment. IWM - Investment and Wealth Management business segment.

Net interest revenue (Tables)

Net interest revenue (Tables)	9 Months Ended
	Sep. 30, 2020
Interest Revenue (Expense), Net [Abstract]
Components of Net Interest Revenue	The following table provides the components of net interest revenue presented on the consolidated income statement. Net interest revenue Quarter ended Year-to-date (in millions) Sept. 30, 2020 June 30, 2020 Sept. 30, 2019 Sept. 30, 2020 Sept. 30, 2019 Interest revenue Deposits with the Federal Reserve and other central banks $ (10) $ (7) $ 102 $ 63 $ 354 Deposits with banks 20 40 73 118 200 Federal funds sold and securities purchased under resale agreements 48 61 660 505 1,702 Margin loans 41 40 104 168 358 Non-margin loans 199 230 287 (a) 738 1,007 (a) Securities: Taxable 499 556 669 1,649 2,062 Exempt from federal income taxes 7 6 7 19 29 Total securities 506 562 676 1,668 2,091 Trading securities 16 17 40 73 115 Total interest revenue 820 943 1,942 3,333 5,827 Interest expense Deposits (29) (17) 437 194 1,260 Federal funds purchased and securities sold under repurchase agreements 6 1 443 282 1,146 Trading liabilities 2 2 8 11 26 Other borrowed funds 3 7 10 14 54 Commercial paper — 1 22 7 48 Customer payables — (1) 59 29 198 Long-term debt 135 170 233 499 722 Total interest expense 117 163 1,212 1,036 3,454 Net interest revenue 703 780 730 2,297 2,373 Provision for credit losses 9 143 (16) 321 (17) Net interest revenue after provision for credit losses $ 694 $ 637 $ 746 $ 1,976 $ 2,390 (a) Includes the impact of a lease-related impairment of $70 million.

Employee benefit plans (Tables)

Employee benefit plans (Tables)	9 Months Ended
	Sep. 30, 2020
Retirement Benefits [Abstract]
Combined Data for Domestic and Foreign Defined Benefit Pension and Post Retirement Healthcare 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 Sept. 30, 2020 June 30, 2020 Sept. 30, 2019 (in millions) Domestic Foreign Health Domestic Foreign Health Domestic Foreign Health Service cost $ — $ 3 $ — $ — $ 3 $ — $ — $ 3 $ — Interest cost 39 7 2 39 6 1 44 8 2 Expected return on assets (80) (10) (2) (79) (9) (2) (84) (11) (1) Other 22 2 (1) 21 3 — 13 — (1) Net periodic benefit (credit) cost $ (19) $ 2 $ (1) $ (19) $ 3 $ (1) $ (27) $ — $ — Net periodic benefit (credit) cost Year-to-date Sept. 30, 2020 Sept. 30, 2019 (in millions) Domestic Foreign Health Domestic Foreign Health Service cost $ — $ 9 $ — $ — $ 9 $ — Interest cost 117 20 4 133 24 5 Expected return on assets (239) (29) (5) (252) (34) (5) Other 65 8 (2) 39 1 (2) Net periodic benefit (credit) cost $ (57) $ 8 $ (3) $ (80) $ — $ (2)

Variable interest entities an_2

Variable interest entities and securitization (Tables)	9 Months Ended
	Sep. 30, 2020
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 in the consolidated balance sheet as of Sept. 30, 2020 and Dec. 31, 2019. 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 investments Sept. 30, 2020 Dec. 31, 2019 (in millions) Investment Securitization Total Investment Securitization Total Trading assets $ 579 $ 400 $ 979 $ 229 $ 400 $ 629 Other assets 9 — 9 16 — 16 Total assets $ 588 (a) $ 400 $ 988 $ 245 (b) $ 400 $ 645 Other liabilities $ 4 $ 400 $ 404 $ 1 $ 387 $ 388 Total liabilities $ 4 (a) $ 400 $ 404 $ 1 (b) $ 387 $ 388 Nonredeemable noncontrolling interests $ 251 (a) $ — $ 251 $ 102 (b) $ — $ 102 (a) Includes voting model entities (“VMEs”) with assets of $226 million, liabilities of $1 million and nonredeemable noncontrolling interests of $31 million. (b) Includes VMEs with assets of $50 million, liabilities of $1 million and nonredeemable noncontrolling interests of $1 million.
Schedule of Variable Interest Entities	As of Sept. 30, 2020 and Dec. 31, 2019, the following assets and liabilities related to the VIEs where we are not the primary beneficiary were included in our consolidated balance sheets and primarily related to accounting for our investments in qualified affordable housing and renewable energy projects. The maximum loss exposure indicated in the table below relates solely to our investments in, and unfunded commitments to, the VIEs. Non-consolidated VIEs Sept. 30, 2020 Dec. 31, 2019 (in millions) Assets Liabilities Maximum Assets Liabilities Maximum Securities - Available-for-sale (a) $ 206 $ — $ 206 $ 208 $ — $ 208 Other 2,278 388 2,675 2,400 422 2,822 (a) Includes investments in the Company’s sponsored CLOs.

Preferred stock (Tables)

Preferred stock (Tables)	9 Months Ended
	Sep. 30, 2020
Stockholders' Equity Note [Abstract]
Preferred Stock Summary	The following table summarizes the Parent’s preferred stock issued and outstanding at Sept. 30, 2020 and Dec. 31, 2019. Preferred stock summary (a) Total shares issued and outstanding Carrying value (b) (in millions) Sept. 30, 2020 Dec. 31, 2019 Sept. 30, 2020 Dec. 31, 2019 Per annum dividend rate Series A Greater of (i) three-month LIBOR plus 0.565% for the related distribution period; or (ii) 4.000% 5,001 5,001 $ 500 $ 500 Series C 5.2% 5,825 5,825 568 568 Series D 4.50% to but excluding June 20, 2023, then a floating rate equal to the three-month LIBOR plus 2.46% 5,000 5,000 494 494 Series E 4.95% to but excluding June 20, 2020, then a floating rate equal to the three-month LIBOR plus 3.42% 10,000 10,000 990 990 Series F 4.625% to but excluding Sept. 20, 2026, then a floating rate equal to the three-month LIBOR plus 3.131% 10,000 10,000 990 990 Series G 4.70% to but excluding Sept. 20, 2025, then a floating rate equal to the five-year treasury rate plus 4.358% 10,000 — 990 — Total 45,826 35,826 $ 4,532 $ 3,542 (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 C, Series D, Series E, Series F and Series G preferred stock is recorded net of issuance costs.
Summary of Preferred Dividends Paid	The table below presents the dividends paid on the Parent’s preferred stock. Preferred dividends paid (dollars in millions, except per share amounts) Depositary shares 3Q20 2Q20 3Q19 YTD20 YTD19 Per share Total Per share Total Per share Total Per share Total Per share Total Series A 100 (a) $ 1,011.11 $ 5 $ 1,022.22 $ 5 $ 1,022.22 $ 5 $ 3,044.44 $ 15 $ 3,044.44 $ 15 Series C 4,000 1,300.00 7 1,300.00 8 1,300.00 8 3,900.00 23 3,900.00 23 Series D 100 N/A — 2,250.00 11 N/A — 2,250.00 11 2,250.00 11 Series E 100 962.65 10 2,475.00 25 N/A — 3,437.65 35 2,475.00 25 Series F 100 2,312.50 23 N/A — 2,312.50 23 4,625.00 46 4,625.00 46 Series G 100 1,579.72 16 N/A — N/A — 1,579.72 16 N/A — Total $ 61 $ 49 $ 36 $ 146 $ 120 (a) Represents Normal Preferred Capital Securities. N/A - Not applicable.

Other comprehensive income (l_2

Other comprehensive income (loss) (Tables)	9 Months Ended
	Sep. 30, 2020
Equity [Abstract]
Components of Other Comprehensive Income (Loss)	Components of other comprehensive income (loss) Quarter ended Sept. 30, 2020 June 30, 2020 Sept. 30, 2019 (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) $ 262 $ 69 $ 331 $ 104 $ 11 $ 115 $ (213) $ (63) $ (276) Total foreign currency translation 262 69 331 104 11 115 (213) (63) (276) Unrealized gain on assets available-for-sale: Unrealized gain arising during period 297 (64) 233 989 (236) 753 88 (25) 63 Reclassification adjustment (b) (9) 3 (6) (9) 2 (7) 1 — 1 Net unrealized gain on assets available-for-sale 288 (61) 227 980 (234) 746 89 (25) 64 Defined benefit plans: Amortization of prior service credit, net loss and initial obligation included in net periodic benefit cost (b) 24 (4) 20 24 (5) 19 13 (3) 10 Total defined benefit plans 24 (4) 20 24 (5) 19 13 (3) 10 Unrealized gain (loss) on cash flow hedges: Unrealized hedge gain (loss) arising during period 9 (1) 8 3 (1) 2 (9) 4 (5) Reclassification of net (gain) loss to net income: Interest rate contracts - interest expense — — — — — — 1 — 1 Foreign exchange (“FX”) contracts - staff expense — — — 3 (1) 2 (2) — (2) Total reclassifications to net income — — — 3 (1) 2 (1) — (1) Net unrealized gain (loss) on cash flow hedges 9 (1) 8 6 (2) 4 (10) 4 (6) Total other comprehensive income (loss) $ 583 $ 3 $ 586 $ 1,114 $ (230) $ 884 $ (121) $ (87) $ (208) (a) Includes the impact of hedges of net investments in foreign subsidiaries. See Note 17 for additional information. (b) The reclassification adjustment related to the unrealized gain (loss) on assets available-for-sale is recorded as net securities gains on the consolidated income statement. The amortization of prior service credit, net loss and initial obligation included in net periodic benefit cost is recorded as staff expense on the consolidated income statement. Components of other comprehensive income (loss) Year-to-date Sept. 30, 2020 Sept. 30, 2019 (in millions) Pre-tax Tax After-tax Pre-tax Tax After-tax Foreign currency translation: Foreign currency translation adjustments arising during the period (a) $ 101 $ (24) $ 77 $ (157) $ (80) $ (237) Total foreign currency translation 101 (24) 77 (157) (80) (237) Unrealized gain on assets available-for-sale: Unrealized gain (loss) arising during period 1,529 (360) 1,169 794 (205) 589 Reclassification adjustment (b) (27) 7 (20) (7) 2 (5) Net unrealized gain on assets available-for-sale 1,502 (353) 1,149 787 (203) 584 Defined benefit plans: Net (loss) arising during the period — — — (11) 2 (9) Amortization of prior service credit, net loss and initial obligation included in net periodic benefit cost (b) 72 (15) 57 38 (8) 30 Total defined benefit plans 72 (15) 57 27 (6) 21 Unrealized (loss) gain on cash flow hedges: Unrealized hedge (loss) arising during period (1) 1 — (1) (2) (3) Reclassification of net loss (gain) to net income : Interest rate contracts - interest expense — — — 1 — 1 FX contracts - staff expense 2 (1) 1 (1) 2 1 Total reclassifications to net income 2 (1) 1 — 2 2 Net unrealized (loss) on cash flow hedges 1 — 1 (1) — (1) Total other comprehensive income $ 1,676 $ (392) $ 1,284 $ 656 $ (289) $ 367 (a) Includes the impact of hedges of net investments in foreign subsidiaries. See Note 17 for additional information. (b) The reclassification adjustment related to the unrealized gain (loss) on assets available-for-sale is recorded as net securities gains on the consolidated income statement. The amortization of prior service credit, net loss and initial obligation included in net periodic benefit cost is recorded as staff expense on the consolidated income statement.

Fair value measurement (Tables)

Fair value measurement (Tables)	9 Months Ended
	Sep. 30, 2020
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 Sept. 30, 2020 and Dec. 31, 2019, 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 measured at fair value on a recurring basis at Sept. 30, 2020 Total carrying (dollars in millions) Level 1 Level 2 Level 3 Netting (a) Available-for-sale securities: Agency RMBS $ — $ 24,733 $ — $ — $ 24,733 U.S. Treasury 24,733 — — — 24,733 Sovereign debt/sovereign guaranteed 7,179 6,914 — — 14,093 Agency commercial MBS — 9,942 — — 9,942 Supranational — 7,136 — — 7,136 Foreign covered bonds — 5,841 — — 5,841 CLOs — 4,657 — — 4,657 Foreign government agencies — 3,970 — — 3,970 U.S. government agencies — 3,478 — — 3,478 Other ABS — 2,930 — — 2,930 Non-agency commercial MBS — 2,711 — — 2,711 Non-agency RMBS (b) — 1,941 — — 1,941 State and political subdivisions — 1,690 — — 1,690 Corporate bonds — 1,030 — — 1,030 Commercial paper/CDs — 357 — — 357 Other debt securities — 1 — — 1 Total available-for-sale securities 31,912 77,331 — — 109,243 Trading assets: Debt instruments 3,181 3,050 — — 6,231 Equity instruments (c) 2,694 — — — 2,694 Derivative assets not designated as hedging: Interest rate 4 4,958 — (2,133) 2,829 Foreign exchange — 4,410 — (3,102) 1,308 Equity and other contracts 4 11 — (3) 12 Total derivative assets not designated as hedging 8 9,379 — (5,238) 4,149 Total trading assets 5,883 12,429 — (5,238) 13,074 Other assets: Derivative assets designated as hedging: Foreign exchange — 56 — — 56 Total derivative assets designated as hedging — 56 — — 56 Other assets (d) 113 174 — — 287 Assets measured at NAV (d) 184 Subtotal assets of operations at fair value 37,908 89,990 — (5,238) 122,844 Percentage of assets of operations prior to netting 30 % 70 % — % Assets of consolidated investment management funds 360 228 — — 588 Total assets $ 38,268 $ 90,218 $ — $ (5,238) $ 123,432 Percentage of total assets prior to netting 30 % 70 % — % Liabilities measured at fair value on a recurring basis at Sept. 30, 2020 Total carrying (dollars in millions) Level 1 Level 2 Level 3 Netting (a) Trading liabilities: Debt instruments $ 3,396 $ 66 $ — $ — $ 3,462 Equity instruments 26 — — — 26 Derivative liabilities not designated as hedging: Interest rate 3 4,243 — (2,551) 1,695 Foreign exchange — 4,522 — (3,631) 891 Equity and other contracts — 11 — (1) 10 Total derivative liabilities not designated as hedging 3 8,776 — (6,183) 2,596 Total trading liabilities 3,425 8,842 — (6,183) 6,084 Long-term debt (c) — 400 — — 400 Other liabilities – derivative liabilities designated as hedging: Interest rate — 803 — — 803 Foreign exchange — 194 — — 194 Total other liabilities – derivative liabilities designated as hedging — 997 — — 997 Subtotal liabilities of operations at fair value 3,425 10,239 — (6,183) 7,481 Percentage of liabilities of operations prior to netting 25 % 75 % — % Liabilities of consolidated investment management funds — 4 — — 4 Total liabilities $ 3,425 $ 10,243 $ — $ (6,183) $ 7,485 Percentage of total liabilities prior to netting 25 % 75 % — % (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 $512 million in Level 2 that was included in the former Grantor Trust. (c) Includes certain interests in securitizations. (d) Includes seed capital, private equity investments and other assets. Assets measured at fair value on a recurring basis at Dec. 31, 2019 Total carrying (dollars in millions) Level 1 Level 2 Level 3 Netting (a) Available-for-sale securities: Agency RMBS $ — $ 27,043 $ — $ — $ 27,043 U.S. Treasury 15,431 — — — 15,431 Sovereign debt/sovereign guaranteed 7,784 4,862 — — 12,646 Agency commercial MBS — 9,417 — — 9,417 Foreign covered bonds — 4,197 — — 4,197 CLOs — 4,063 — — 4,063 Supranational — 3,709 — — 3,709 Foreign government agencies — 2,643 — — 2,643 Non-agency commercial MBS — 2,178 — — 2,178 Other ABS — 2,143 — — 2,143 U.S. government agencies — 1,949 — — 1,949 Non-agency RMBS (b) — 1,233 — — 1,233 State and political subdivisions — 1,044 — — 1,044 Corporate bonds — 853 — — 853 Other debt securities — 1 — — 1 Total available-for-sale securities 23,215 65,335 — — 88,550 Trading assets: Debt instruments 1,568 4,243 — — 5,811 Equity instruments (c) 4,539 — — — 4,539 Derivative assets not designated as hedging: Interest rate 4 3,686 — (1,792) 1,898 Foreign exchange — 5,331 — (4,021) 1,310 Equity and other contracts — 19 — (6) 13 Total derivative assets not designated as hedging 4 9,036 — (5,819) 3,221 Total trading assets 6,111 13,279 — (5,819) 13,571 Other assets : Derivative assets designated as hedging: Foreign exchange — 21 — — 21 Total derivative assets designated as hedging — 21 — — 21 Other assets (d) 38 179 — — 217 Assets measured at NAV (d) 181 Subtotal assets of operations at fair value 29,364 78,814 — (5,819) 102,540 Percentage of assets of operations prior to netting 27 % 73 % — % Assets of consolidated investment management funds 212 33 — — 245 Total assets $ 29,576 $ 78,847 $ — $ (5,819) $ 102,785 Percentage of total assets prior to netting 27 % 73 % — % Liabilities measured at fair value on a recurring basis at Dec. 31, 2019 Total carrying (dollars in millions) Level 1 Level 2 Level 3 Netting (a) Trading liabilities: Debt instruments $ 1,477 $ 107 $ — $ — $ 1,584 Equity instruments 73 — — — 73 Derivative liabilities not designated as hedging: Interest rate 6 3,244 — (1,986) 1,264 Foreign exchange — 5,340 — (3,428) 1,912 Equity and other contracts 3 6 — (1) 8 Total derivative liabilities not designated as hedging 9 8,590 — (5,415) 3,184 Total trading liabilities 1,559 8,697 — (5,415) 4,841 Long-term debt (c) — 387 — — 387 Other liabilities – derivative liabilities designated as hedging: Interest rate — 350 — — 350 Foreign exchange — 257 — — 257 Total other liabilities – derivative liabilities designated as hedging — 607 — — 607 Subtotal liabilities of operations at fair value 1,559 9,691 — (5,415) 5,835 Percentage of liabilities of operations prior to netting 14 % 86 % — % Liabilities of consolidated investment management funds 1 — — — 1 Total liabilities $ 1,560 $ 9,691 $ — $ (5,415) $ 5,836 Percentage of total liabilities prior to netting 14 % 86 % — % (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 $640 million in Level 2 that was included in the former Grantor Trust. (c) Includes certain interests in securitizations. (d) 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 Sept. 30, 2020 Dec. 31, 2019 Total Ratings (a) Total Ratings (a) AAA/ A+/ BBB+/ BB+ and AAA/ A+/ BBB+/ BB+ and (dollars in millions) (b) (b) Non-agency RMBS (c) , originated in: 2007-2020 $ 1,311 88 % — % — % 12 % $ 464 55 % 1 % — % 44 % 2006 244 — 23 — 77 291 — 21 — 79 2005 243 4 — 7 89 305 5 2 8 85 2004 and earlier 143 20 9 12 59 173 22 24 4 50 Total non-agency RMBS $ 1,941 61 % 4 % 2 % 33 % $ 1,233 25 % 9 % 3 % 63 % Non-agency commercial MBS originated in: 2009-2020 $ 2,711 100 % — % — % — % $ 2,178 98 % 2 % — % — % Foreign covered bonds: Canada $ 2,368 98 % 2 % — % — % $ 1,798 100 % — % — % — % UK 1,130 100 — — — 984 100 — — — Australia 775 100 — — — 431 100 — — — Norway 609 100 — — — 287 100 — — — Germany 479 100 — — — 357 100 — — — Other 480 100 — — — 340 100 — — — Total foreign covered bonds $ 5,841 99 % 1 % — % — % $ 4,197 100 % — % — % — % Sovereign debt/sovereign guaranteed: Germany $ 2,155 100 % — % — % — % $ 1,997 100 % — % — % — % UK 2,037 100 — — — 3,318 100 — — — Italy 1,974 — — 100 — 1,260 — — 100 — France 1,846 100 — — — 1,272 100 — — — Spain 1,835 — 5 95 — 1,453 — 6 94 — Singapore 949 100 — — — 742 100 — — — Canada 732 100 — — — 271 100 — — — Ireland 522 — 100 — — 301 — 100 — — Netherlands 471 100 — — — 791 100 — — — Japan 437 — 100 — — 274 — 100 — — Austria 294 100 — — — 240 100 — — — Belgium 253 100 — — — 79 100 — — — Hong Kong 206 100 — — — 411 100 — — — Other (d) 382 51 — 18 31 237 39 4 — 57 Total sovereign debt/sovereign guaranteed $ 14,093 65 % 7 % 27 % 1 % $ 12,646 73 % 5 % 21 % 1 % Foreign government agencies: Germany $ 1,483 100 % — % — % — % $ 1,131 100 % — % — % — % Netherlands 800 100 — — — 678 100 — — — Canada 442 72 28 — — 71 — 100 — — France 293 100 — — — 42 100 — — — Sweden 276 100 — — — 202 100 — — — Finland 246 100 — — — 245 100 — — — Other 430 77 23 — — 274 79 21 — — Total foreign government agencies $ 3,970 94 % 6 % — % — % $ 2,643 95 % 5 % — % — % (a) Represents ratings by S&P or the equivalent. (b) At Sept. 30, 2020 and Dec. 31, 2019, sovereign debt/sovereign guaranteed 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 $512 million at Sept. 30, 2020 and $640 million at Dec. 31, 2019 that were included in the former Grantor Trust. (d) Includes non-investment grade sovereign debt/sovereign guaranteed securities related to Brazil of $119 million at Sept. 30, 2020 and $134 million at Dec. 31, 2019.
Assets Measured at Fair Value on Nonrecurring Basis	The following table presents the financial instruments carried on the consolidated balance sheet by caption and level in the fair value hierarchy as of Sept. 30, 2020 and Dec. 31, 2019. Assets measured at fair value on a nonrecurring basis Sept. 30, 2020 Dec. 31, 2019 Total carrying Total carrying (in millions) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Loans (a) $ — $ 52 $ — $ 52 $ — $ 58 $ — $ 58 Other assets (b) — 113 — 113 — 64 — 64 Total assets at fair value on a nonrecurring basis $ — $ 165 $ — $ 165 $ — $ 122 $ — $ 122 (a) The fair value of these loans decreased less than $1 million in the third quarter of 2020 and the fourth quarter of 2019, 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 Sept. 30, 2020 and Dec. 31, 2019, by caption on the consolidated balance sheet and by the valuation hierarchy. Summary of financial instruments Sept. 30, 2020 (in millions) Level 1 Level 2 Level 3 Total Carrying Assets: Interest-bearing deposits with the Federal Reserve and other central banks $ — $ 106,185 $ — $ 106,185 $ 106,185 Interest-bearing deposits with banks — 19,037 — 19,037 19,027 Federal funds sold and securities purchased under resale agreements — 29,647 — 29,647 29,647 Securities held-to-maturity 4,415 43,043 — 47,458 46,096 Loans (a) — 54,475 — 54,475 54,088 Other financial assets 4,104 1,121 — 5,225 5,225 Total $ 8,519 $ 253,508 $ — $ 262,027 $ 260,268 Liabilities: Noninterest-bearing deposits $ — $ 79,470 $ — $ 79,470 $ 79,470 Interest-bearing deposits — 216,499 — 216,499 216,842 Federal funds purchased and securities sold under repurchase agreements — 15,907 — 15,907 15,907 Payables to customers and broker-dealers — 23,514 — 23,514 23,514 Commercial paper — 671 — 671 671 Borrowings — 607 — 607 607 Long-term debt — 27,457 — 27,457 25,721 Total $ — $ 364,125 $ — $ 364,125 $ 362,732 (a) Does not include the leasing portfolio. Summary of financial instruments Dec. 31, 2019 (in millions) Level 1 Level 2 Level 3 Total estimated Carrying Assets: Interest-bearing deposits with the Federal Reserve and other central banks $ — $ 95,042 $ — $ 95,042 $ 95,042 Interest-bearing deposits with banks — 14,832 — 14,832 14,811 Federal funds sold and securities purchased under resale agreements — 30,182 — 30,182 30,182 Securities held-to-maturity 4,630 30,175 — 34,805 34,483 Loans (a) — 54,194 — 54,194 53,718 Other financial assets 4,830 1,233 — 6,063 6,063 Total $ 9,460 $ 225,658 $ — $ 235,118 $ 234,299 Liabilities: Noninterest-bearing deposits $ — $ 57,630 $ — $ 57,630 $ 57,630 Interest-bearing deposits — 200,846 — 200,846 201,836 Federal funds purchased and securities sold under repurchase agreements — 11,401 — 11,401 11,401 Payables to customers and broker-dealers — 18,758 — 18,758 18,758 Commercial paper — 3,959 — 3,959 3,959 Borrowings — 917 — 917 917 Long-term debt — 27,858 — 27,858 27,114 Total $ — $ 321,369 $ — $ 321,369 $ 321,615 (a) Does not include the leasing portfolio.

Fair value option (Tables)

Fair value option (Tables)	9 Months Ended
	Sep. 30, 2020
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 Sept. 30, 2020 Dec. 31, 2019 (in millions) Assets of consolidated investment management funds: Trading assets $ 579 $ 229 Other assets 9 16 Total assets of consolidated investment management funds $ 588 $ 245 Liabilities of consolidated investment management funds: Other liabilities 4 1 Total liabilities of consolidated investment management funds $ 4 $ 1 The following table presents the changes in fair value of long-term debt recorded in foreign exchange and other trading revenue in the consolidated income statement. Change in fair value of long-term debt (a) (in millions) 3Q20 2Q20 3Q19 YTD20 YTD19 Foreign exchange and other trading revenue $ (1) $ (2) $ (3) $ (13) $ (15) (a) The changes in fair value are approximately offset by an economic hedge included in foreign exchange and other trading revenue.

Derivative instruments (Tables)

Derivative instruments (Tables)	9 Months Ended
	Sep. 30, 2020
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 3Q20 2Q20 3Q19 YTD20 YTD19 Interest rate fair value hedges of available-for-sale securities Derivative Interest revenue $ 150 $ 19 $ (250) $ (864) $ (1,119) Hedged item Interest revenue (140) (15) 243 856 1,099 Interest rate fair value hedges of long-term debt Derivative Interest expense (68) 47 146 693 631 Hedged item Interest expense 66 (49) (145) (691) (627) Foreign exchange fair value hedges of available-for-sale securities Derivative (a) Other revenue 1 (5) 2 (11) 3 Hedged item Other revenue 1 5 (2) 13 (2) Cash flow hedge of interest rate risk (Loss) reclassified from OCI into income Interest expense — — (1) — (1) Cash flow hedges of forecasted FX exposures (Loss) gain reclassified from OCI into income Staff expense — (3) 2 (2) 1 Gain (loss) recognized in the consolidated income statement due to fair value and cash flow hedging relationships $ 10 $ (1) $ (5) $ (6) $ (15)
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 3Q20 2Q20 3Q19 YTD20 YTD19 3Q20 2Q20 3Q19 YTD20 YTD19 FX contracts $ (289) $ (45) $ 252 $ 103 $ 322 Net interest revenue $ — $ — $ — $ — $ —
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) Sept. 30, 2020 Dec. 31, 2019 Sept. 30, 2020 Dec. 31, 2019 Available-for-sale securities (b)(c) $ 14,629 $ 13,792 $ 1,650 $ 687 Long-term debt $ 14,889 $ 13,945 $ 870 $ 116 (a) Includes $187 million and $53 million of basis adjustment increases on discontinued hedges associated with available-for-sale securities at Sept. 30, 2020 and Dec. 31, 2019, respectively, and $136 million and $200 million of basis adjustment decreases on discontinued hedges associated with long-term debt at Sept. 30, 2020 and Dec. 31, 2019, respectively. (b) Excludes hedged items where only foreign currency risk is the designated hedged risk, as the basis adjustments related to foreign currency hedges will not reverse through the consolidated income statement in future periods. The carrying amount excluded for available-for-sale securities was $140 million at Sept. 30, 2020 and $142 million at Dec. 31, 2019. (c) Carrying amount represents the amortized cost.
Impact of Derivative Instruments on the Balance Sheet	The following table summarizes the notional amount and carrying values of our total derivative portfolio at Sept. 30, 2020 and Dec. 31, 2019. Impact of derivative instruments on the balance sheet Notional value Asset derivatives Liability derivatives Sept. 30, 2020 Dec. 31, 2019 Sept. 30, 2020 Dec. 31, 2019 Sept. 30, 2020 Dec. 31, 2019 (in millions) Derivatives designated as hedging instruments: (a)(b) Interest rate contracts $ 28,441 $ 28,365 $ — $ — $ 803 $ 350 Foreign exchange contracts 8,369 8,390 56 21 194 257 Total derivatives designated as hedging instruments $ 56 $ 21 $ 997 $ 607 Derivatives not designated as hedging instruments: (b)(c) Interest rate contracts $ 206,771 $ 306,790 $ 4,962 $ 3,690 $ 4,246 $ 3,250 Foreign exchange contracts 753,812 848,961 4,410 5,331 4,522 5,340 Equity contracts 2,241 3,189 15 19 8 5 Credit contracts 165 165 — — 3 4 Total derivatives not designated as hedging instruments $ 9,387 $ 9,040 $ 8,779 $ 8,599 Total derivatives fair value (d) $ 9,443 $ 9,061 $ 9,776 $ 9,206 Effect of master netting agreements (e) (5,238) (5,819) (6,183) (5,415) Fair value after effect of master netting agreements $ 4,205 $ 3,242 $ 3,593 $ 3,791 (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 $675 million and $1,620 million, respectively, at Sept. 30, 2020, and $1,022 million and $618 million, respectively, at Dec. 31, 2019.
Revenue from Foreign Exchange and Other Trading	The following table presents our foreign exchange and other trading revenue. Foreign exchange and other trading revenue (in millions) 3Q20 2Q20 3Q19 YTD20 YTD19 Foreign exchange $ 151 $ 174 $ 129 $ 578 $ 439 Other trading (loss) revenue (14) (8) 21 44 47 Total foreign exchange and other trading revenue $ 137 $ 166 $ 150 $ 622 $ 486
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. Sept. 30, 2020 Dec. 31, 2019 (in millions) Aggregate fair value of OTC derivatives in net liability positions (a) $ 5,958 $ 3,442 Collateral posted $ 6,384 $ 3,671 (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) Sept. 30, 2020 Dec. 31, 2019 (in millions) If The Bank of New York Mellon’s rating changed to: (b) A3/A- $ 10 $ 56 Baa2/BBB $ 565 $ 608 Ba1/BB+ $ 3,113 $ 2,084 (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 Sept. 30, 2020 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 $ 3,183 $ 2,133 $ 1,050 $ 350 $ — $ 700 Foreign exchange contracts 4,043 3,102 941 33 — 908 Equity and other contracts 8 3 5 — — 5 Total derivatives subject to netting arrangements 7,234 5,238 1,996 383 — 1,613 Total derivatives not subject to netting arrangements 2,209 — 2,209 — — 2,209 Total derivatives 9,443 5,238 4,205 383 — 3,822 Reverse repurchase agreements 72,507 54,629 (b) 17,878 17,852 — 26 Securities borrowing 11,769 — 11,769 11,216 — 553 Total $ 93,719 $ 59,867 $ 33,852 $ 29,451 $ — $ 4,401 (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, 2019 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 $ 2,394 $ 1,792 $ 602 $ 207 $ — $ 395 Foreign exchange contracts 4,861 4,021 840 44 — 796 Equity and other contracts 9 6 3 — — 3 Total derivatives subject to netting arrangements 7,264 5,819 1,445 251 — 1,194 Total derivatives not subject to netting arrangements 1,797 — 1,797 — — 1,797 Total derivatives 9,061 5,819 3,242 251 — 2,991 Reverse repurchase agreements 112,355 93,794 (b) 18,561 18,554 — 7 Securities borrowing 11,621 — 11,621 11,278 — 343 Total $ 133,037 $ 99,613 $ 33,424 $ 30,083 $ — $ 3,341 (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 Sept. 30, 2020 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 $ 5,035 $ 2,551 $ 2,484 $ 2,477 $ — $ 7 Foreign exchange contracts 4,294 3,631 663 224 — 439 Equity and other contracts 8 1 7 — — 7 Total derivatives subject to netting arrangements 9,337 6,183 3,154 2,701 — 453 Total derivatives not subject to netting arrangements 439 — 439 — — 439 Total derivatives 9,776 6,183 3,593 2,701 — 892 Repurchase agreements 69,494 54,629 (b) 14,865 14,863 1 1 Securities lending 1,002 — 1,002 961 — 41 Total $ 80,272 $ 60,812 $ 19,460 $ 18,525 $ 1 $ 934 (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, 2019 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 $ 3,550 $ 1,986 $ 1,564 $ 1,539 $ — $ 25 Foreign exchange contracts 4,873 3,428 1,445 74 — 1,371 Equity and other contracts 5 1 4 2 — 2 Total derivatives subject to netting arrangements 8,428 5,415 3,013 1,615 — 1,398 Total derivatives not subject to netting arrangements 778 — 778 — — 778 Total derivatives 9,206 5,415 3,791 1,615 — 2,176 Repurchase agreements 104,451 93,794 (b) 10,657 10,657 — — Securities lending 718 — 718 694 — 24 Total $ 114,375 $ 99,209 $ 15,166 $ 12,966 $ — $ 2,200 (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 Sept. 30, 2020 Dec. 31, 2019 Remaining contractual maturity Total Remaining contractual maturity Total (in millions) Overnight and continuous Up to 30 days 30 days or more Overnight and continuous Up to 30 days 30 days or more Repurchase agreements: U.S. Treasury $ 60,350 $ — $ — $ 60,350 $ 94,788 $ 10 $ — $ 94,798 Agency RMBS 2,913 675 2 3,590 4,234 774 — 5,008 Corporate bonds 232 64 1,432 1,728 266 236 1,617 2,119 Sovereign debt/ sovereign guaranteed 128 — 1,151 1,279 — 22 — 22 State and political subdivisions 43 39 810 892 38 166 1,077 1,281 U.S. government agencies 610 — — 610 594 16 — 610 Other debt securities 47 44 186 277 2 — 2 4 Equity securities — 53 715 768 31 99 479 609 Total $ 64,323 $ 875 $ 4,296 $ 69,494 $ 99,953 $ 1,323 $ 3,175 $ 104,451 Securities lending: Agency RMBS $ 180 $ — $ — $ 180 $ 160 $ — $ — $ 160 U.S. government agencies 1 — — 1 19 — — 19 Other debt securities 49 — — 49 41 — — 41 Equity securities 772 — — 772 498 — — 498 Total $ 1,002 $ — $ — $ 1,002 $ 718 $ — $ — $ 718 Total secured borrowings $ 65,325 $ 875 $ 4,296 $ 70,496 $ 100,671 $ 1,323 $ 3,175 $ 105,169

Commitments and contingent li_2

Commitments and contingent liabilities (Tables)	9 Months Ended
	Sep. 30, 2020
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 Sept. 30, 2020 Dec. 31, 2019 (in millions) Lending commitments $ 47,658 $ 49,119 Standby letters of credit (“SBLC”) (a) 2,175 2,298 Commercial letters of credit 87 74 Securities lending indemnifications (b)(c) 414,324 408,378 (a) Net of participations totaling $145 million at Sept. 30, 2020 and $146 million at Dec. 31, 2019. (b) Excludes the indemnification for securities for which BNY Mellon acts as an agent on behalf of CIBC Mellon clients, which totaled $58 billion at Sept. 30, 2020 and $57 billion at Dec. 31, 2019.
Standby Letters of Credits by Investment Grade	The table below shows SBLCs by investment grade: Standby letters of credit Sept. 30, 2020 Dec. 31, 2019 Investment grade 87 % 90 % Non-investment grade 13 % 10 %
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) Sept. 30, 2020 Loans Unfunded Total exposure Securities industry $ 2.8 $ 22.3 $ 25.1 Asset managers 1.2 6.5 7.7 Banks 6.1 1.1 7.2 Insurance 0.1 2.7 2.8 Government 0.1 0.2 0.3 Other 0.7 0.7 1.4 Total $ 11.0 $ 33.5 $ 44.5 Commercial portfolio exposure (in billions) Sept. 30, 2020 Loans Unfunded Total exposure Services and other $ 1.0 $ 3.5 $ 4.5 Manufacturing 0.7 3.8 4.5 Energy and utilities 0.2 4.0 4.2 Media and telecom — 0.9 0.9 Total $ 1.9 $ 12.2 $ 14.1

Supplemental information to t_2

Supplemental information to the Consolidated Statement of Cash Flows (Tables)	9 Months Ended
	Sep. 30, 2020
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 Nine months ended Sept. 30, (in millions) 2020 2019 Transfers from loans to other assets for other real estate owned $ 1 $ 1 Change in assets of consolidated investment management funds 343 120 Change in liabilities of consolidated investment management funds 3 13 Change in nonredeemable noncontrolling interests of consolidated investment management funds 149 102 Securities purchased not settled 846 804 Premises and equipment/capitalized software funded by finance lease obligations — 14 Premises and equipment/operating lease obligations 126 1,440 (a) (a) Includes $1,244 million related to the adoption of ASU 2016-02, Leases

Lines of business (Tables)

Lines of business (Tables)	9 Months Ended
	Sep. 30, 2020
Segment Reporting [Abstract]
Contribution of Segments to Overall Profitability	The following consolidating schedules present the contribution of our businesses to our overall profitability. For the quarter ended Sept. 30, 2020 Investment Investment and Wealth Other Consolidated (dollars in millions) Total fee and other revenue $ 2,246 $ 871 (a) $ 20 $ 3,137 (a) Net interest revenue (expense) 681 47 (25) 703 Total revenue (loss) 2,927 918 (a) (5) 3,840 (a) Provision for credit losses (10) 12 7 9 Noninterest expense 2,020 661 — 2,681 Income (loss) before income taxes $ 917 $ 245 (a) $ (12) $ 1,150 (a) Pre-tax operating margin (b) 31 % 27 % N/M 30 % Average assets $ 329,324 $ 30,160 $ 55,381 $ 414,865 (a) Total fee and other revenue includes net income from consolidated investment management funds of $20 million, representing $27 million of income and noncontrolling interests of $7 million. Total revenue and income before income taxes are net of noncontrolling interests of $7 million. (b) Income before income taxes divided by total revenue. N/M - Not meaningful. For the quarter ended June 30, 2020 Investment Investment and Wealth Other Consolidated (dollars in millions) Total fee and other revenue $ 2,339 $ 838 (a) $ 38 $ 3,215 (a) Net interest revenue (expense) 768 48 (36) 780 Total revenue 3,107 886 (a) 2 3,995 (a) Provision for credit losses 145 7 (9) 143 Noninterest expense 1,989 658 39 2,686 Income (loss) before income taxes $ 973 $ 221 (a) $ (28) $ 1,166 (a) Pre-tax operating margin (b) 31 % 25 % N/M 29 % Average assets $ 335,288 $ 30,327 $ 49,744 $ 415,359 (a) Total fee and other revenue includes net income from consolidated investment management funds of $39 million, representing $54 million of income and noncontrolling interests of $15 million. Total revenue and income before income taxes are net of noncontrolling interests of $15 million. (b) Income before income taxes divided by total revenue. N/M - Not meaningful. For the quarter ended Sept. 30, 2019 Investment Investment and Wealth Other Consolidated (dollars in millions) Total fee and other revenue (loss) $ 2,296 $ 838 (a) $ (6) $ 3,128 (a) Net interest revenue (expense) 761 49 (80) 730 Total revenue (loss) 3,057 887 (a) (86) 3,858 (a) Provision for credit losses (15) — (1) (16) Noninterest expense 1,973 592 25 2,590 Income (loss) before income taxes $ 1,099 $ 295 (a) $ (110) $ 1,284 (a) Pre-tax operating margin (b) 36 % 33 % N/M 33 % Average assets $ 269,926 $ 27,840 $ 52,913 $ 350,679 (a) Total fee and other revenue includes net income from consolidated investment management funds of $— million, representing $3 million of income and noncontrolling interests of $3 million. Total revenue and income before income taxes are net of noncontrolling interests of $3 million. (b) Income before income taxes divided by total revenue. N/M - Not meaningful. For the nine months ended Sept. 30, 2020 Investment Investment and Wealth Other Consolidated (dollars in millions) Total fee and other revenue $ 7,021 $ 2,555 (a) $ 88 $ 9,664 (a) Net interest revenue (expense) 2,255 147 (105) 2,297 Total revenue (loss) 9,276 2,702 (a) (17) 11,961 (a) Provision for credit losses 284 28 9 321 Noninterest expense 5,996 2,014 69 8,079 Income (loss) before income taxes $ 2,996 $ 660 (a) $ (95) $ 3,561 (a) Pre-tax operating margin (b) 32 % 24 % N/M 30 % Average assets $ 322,924 $ 30,343 $ 51,936 $ 405,203 (a) Total fee and other revenue includes net income from consolidated investment management funds of $39 million, representing $43 million of income and noncontrolling interests of $4 million. Total revenue and income before income taxes are net of noncontrolling interests of $4 million. (b) Income before income taxes divided by total revenue. N/M - Not meaningful. For the nine months ended Sept. 30, 2019 Investment Investment and Wealth Other Consolidated (dollars in millions) Total fee and other revenue $ 6,690 $ 2,561 (a) $ 43 $ 9,294 (a) Net interest revenue (expense) 2,348 175 (150) 2,373 Total revenue (loss) 9,038 2,736 (a) (107) 11,667 (a) Provision for credit losses (11) (1) (5) (17) Noninterest expense 5,917 1,916 103 7,936 Income (loss) before income taxes $ 3,132 $ 821 (a) $ (205) $ 3,748 (a) Pre-tax operating margin (b) 35 % 30 % N/M 32 % Average assets $ 263,631 $ 29,815 $ 49,683 $ 343,129 (a) Total fee and other revenue includes net income from consolidated investment management funds of $22 million, representing $39 million of income and noncontrolling interests of $17 million. Total revenue and income before income taxes are net of noncontrolling interests of $17 million. (b) Income before income taxes divided by total revenue. N/M - Not meaningful.

Accounting changes and new ac_4

Accounting changes and new accounting guidance - Narrative (Details) - USD ($)

9 Months Ended

12 Months Ended

Sep. 30, 2020

Sep. 30, 2019

Dec. 31, 2019

Dec. 31, 2018

Jun. 30, 2020

Mar. 31, 2020

Jan. 01, 2020

Jun. 30, 2019

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Accounting Standards Update [Extensible List]

us-gaap:AccountingStandardsUpdate201602Member

us-gaap:AccountingStandardsUpdate201613Member

us-gaap:AccountingStandardsUpdate201802Member

Adjustment for the cumulative effect of applying the ASU

$ 45,168,000,000

[1],[2]

$ 41,323,000,000

[3],[4]

$ 41,585,000,000

[1]

$ 40,739,000,000

[3]

$ 43,809,000,000

[2],[5]

$ 41,239,000,000

[5]

$ 41,699,000,000

[4]

Minimum loan amount required to measure impairment allowance

1,000,000

Retained earnings

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Adjustment for the cumulative effect of applying the ASU

$ 33,821,000,000

$ 30,789,000,000

31,894,000,000

28,652,000,000

$ 33,224,000,000

$ 32,601,000,000

$ 30,081,000,000

Commercial Loan

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Threshold period past due for nonaccrual status

90 days

First Lien Residential Mortgage

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Threshold period past due subject to impairment test

90 days

Second Lien Residential Mortgage

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Threshold period past due subject to further impairment testing

90 days

Cumulative Effect, Period Of Adoption, Adjustment

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Adjustment for the cumulative effect of applying the ASU

40,000,000

0

Cumulative Effect, Period Of Adoption, Adjustment | Retained earnings

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Adjustment for the cumulative effect of applying the ASU

$ 45,000,000

$ 90,000,000

$ 45,000,000

[1]

Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $37,941 million at Dec. 31, 2019 and $40,385 million at Sept. 30, 2020.

[2]

Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $39,165 million at June 30, 2020 and $40,385 million at Sept. 30, 2020.

[3]

Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $37,096 million at Dec. 31, 2018 and $37,578 million at Sept. 30, 2019.

[4]

Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $37,991 million at June 30, 2019 and $37,578 million at Sept. 30, 2019.

[5]

Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $37,603 million at March 31, 2020 and $39,165 million at June 30, 2020.

Accounting changes and new ac_5

Accounting changes and new accounting guidance - Allowance for Credit Losses (Details) - USD ($) $ in Millions	Sep. 30, 2020	Jun. 30, 2020	Jan. 01, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses, loans	$ 460	$ 454		$ 216	$ 224	$ 241	$ 252
Securities	12
Allowance for credit losses			$ 161
Reclassification of credit-related reserves on accounts receivable			4
Cumulative Effect, Period Of Adoption, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses, loans			(69)	$ (69)
Securities			7
Other			3
Allowance for credit losses			(59)
Loans
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses, loans	325	302	48		127
Lending-related commitments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses, loans	$ 135	$ 152	$ 21		$ 97

Acquisitions and dispositions -

Acquisitions and dispositions - Narrative (Details) - USD ($)	Nov. 08, 2019	Sep. 30, 2020	Sep. 30, 2020
Business Acquisition [Line Items]
Contingent payments		$ 0	$ 3,000,000
Potential obligation to pay additional consideration, lower range		5,000,000	5,000,000
Potential obligation to pay additional consideration, upper range		$ 10,000,000	$ 10,000,000
Contingent consideration payment period			2 years
Promontory Interfinancial Network
Business Acquisition [Line Items]
Gain on disposal	$ 622,000,000

Securities - Amortized Cost, Gr

Securities - Amortized Cost, Gross Unrealized Gains and Losses and Fair Value (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Available-for-sale:
Amortized cost	$ 105,684	$ 87,435
Gross unrealized, Gain	3,694	1,353
Gross unrealized, Loss	135	238
Available-for-sale	109,243	88,550
Held-to-maturity:
Amortized cost	46,096	34,483
Gross unrealized, Gains	1,377	377
Gross unrealized, Losses	15	55
Securities held-to-maturity	47,458	34,805
Amortized cost, Total	151,780	121,918
Gross unrealized, Gain, Total	5,071	1,730
Gross unrealized, Losses, Total	150	293
Fair value, Total	156,701	123,355
Debt securities, available-for-sale, allowance for credit loss	12
AOCI, transfers from AFS to HTM Securities, gross unrealized gains	25	32
AOCI, transfers from AFS to HTM Securities, gross unrealized losses	49	65
Agency RMBS
Available-for-sale:
Amortized cost	24,262	27,022
Gross unrealized, Gain	526	164
Gross unrealized, Loss	55	143
Available-for-sale	24,733	27,043
Held-to-maturity:
Amortized cost	37,086	27,357
Gross unrealized, Gains	1,117	292
Gross unrealized, Losses	10	46
Securities held-to-maturity	38,193	27,603
U.S. Treasury
Available-for-sale:
Amortized cost	23,166	14,979
Gross unrealized, Gain	1,568	472
Gross unrealized, Loss	1	20
Available-for-sale	24,733	15,431
Held-to-maturity:
Amortized cost	3,288	3,818
Gross unrealized, Gains	103	28
Gross unrealized, Losses	0	3
Securities held-to-maturity	3,391	3,843
Sovereign debt/sovereign guaranteed
Available-for-sale:
Amortized cost	13,925	12,548
Gross unrealized, Gain	169	109
Gross unrealized, Loss	1	11
Available-for-sale	14,093	12,646
Held-to-maturity:
Amortized cost	983	756
Gross unrealized, Gains	41	31
Gross unrealized, Losses	0	0
Securities held-to-maturity	1,024	787
Agency commercial mortgage-backed securities (“MBS”)
Available-for-sale:
Amortized cost	9,299	9,231
Gross unrealized, Gain	646	203
Gross unrealized, Loss	3	17
Available-for-sale	9,942	9,417
Held-to-maturity:
Amortized cost	2,041	1,326
Gross unrealized, Gains	107	21
Gross unrealized, Losses	0	3
Securities held-to-maturity	2,148	1,344
Foreign covered bonds
Available-for-sale:
Amortized cost	5,777	4,189
Gross unrealized, Gain	64	15
Gross unrealized, Loss	0	7
Available-for-sale	5,841	4,197
Held-to-maturity:
Amortized cost		79
Gross unrealized, Gains		0
Gross unrealized, Losses		0
Securities held-to-maturity		79
Supranational
Available-for-sale:
Amortized cost	7,069	3,697
Gross unrealized, Gain	68	18
Gross unrealized, Loss	1	6
Available-for-sale	7,136	3,709
Held-to-maturity:
Amortized cost	52	27
Gross unrealized, Gains	1	0
Gross unrealized, Losses	0	0
Securities held-to-maturity	53	27
Collateralized loan obligations (“CLOs”)
Available-for-sale:
Amortized cost	4,696	4,078
Gross unrealized, Gain	5	1
Gross unrealized, Loss	44	16
Available-for-sale	4,657	4,063
Foreign government agencies
Available-for-sale:
Amortized cost	3,924	2,638
Gross unrealized, Gain	46	7
Gross unrealized, Loss	0	2
Available-for-sale	3,970	2,643
U.S. government agencies
Available-for-sale:
Amortized cost	3,300	1,890
Gross unrealized, Gain	180	61
Gross unrealized, Loss	2	2
Available-for-sale	3,478	1,949
Held-to-maturity:
Amortized cost	2,266	1,023
Gross unrealized, Gains	5	1
Gross unrealized, Losses	4	2
Securities held-to-maturity	2,267	1,022
Other ABS
Available-for-sale:
Amortized cost	2,903	2,141
Gross unrealized, Gain	31	7
Gross unrealized, Loss	4	5
Available-for-sale	2,930	2,143
Non-agency commercial MBS
Available-for-sale:
Amortized cost	2,565	2,134
Gross unrealized, Gain	156	46
Gross unrealized, Loss	10	2
Available-for-sale	2,711	2,178
Commercial paper/certificates of deposit (“CDs”)
Available-for-sale:
Amortized cost	355
Gross unrealized, Gain	2
Gross unrealized, Loss	0
Available-for-sale	357
Held-to-maturity:
Amortized cost	295
Gross unrealized, Gains	0
Gross unrealized, Losses	0
Securities held-to-maturity	295
Non-agency RMBS
Available-for-sale:
Amortized cost	1,793	1,038
Gross unrealized, Gain	157	202
Gross unrealized, Loss	9	7
Available-for-sale	1,941	1,233
Held-to-maturity:
Amortized cost	70	80
Gross unrealized, Gains	3	4
Gross unrealized, Losses	1	1
Securities held-to-maturity	72	83
Non-agency RMBS | Grantor Trust
Available-for-sale:
Available-for-sale	512	640
State and political subdivisions
Available-for-sale:
Amortized cost	1,661	1,017
Gross unrealized, Gain	33	27
Gross unrealized, Loss	4	0
Available-for-sale	1,690	1,044
Held-to-maturity:
Amortized cost	15	17
Gross unrealized, Gains	0	0
Gross unrealized, Losses	0	0
Securities held-to-maturity	15	17
Corporate bonds
Available-for-sale:
Amortized cost	988	832
Gross unrealized, Gain	43	21
Gross unrealized, Loss	1	0
Available-for-sale	1,030	853
Other debt securities
Available-for-sale:
Amortized cost	1	1
Gross unrealized, Gain	0	0
Gross unrealized, Loss	0	0
Available-for-sale	$ 1	$ 1

Securities - Net Securities Gai

Securities - Net Securities Gains (Losses) (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Securities [Abstract]
Realized gross gains	$ 10	$ 16	$ 1	$ 38	$ 18
Realized gross losses	(1)	(7)	(1)	(11)	(10)
Recognized gross impairments	0	0	(1)	0	(1)
Total net securities gains (losses)	$ 9	$ 9	$ (1)	$ 27	$ 7

Securities - Pre-Tax Net Securi

Securities - Pre-Tax Net Securities Gains (Losses) by Type (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Total net securities gains (losses)	$ 9	$ 9	$ (1)	$ 27	$ 7
Foreign government agencies
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Total net securities gains (losses)	5	2	0	7	0
U.S. Treasury
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Total net securities gains (losses)	1	1	0	7	4
Supranational
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Total net securities gains (losses)	0	6	0	6	0
Sovereign debt/sovereign guaranteed
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Total net securities gains (losses)	1	2	0	3	3
State and political subdivisions
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Total net securities gains (losses)	0	0	0	0	2
Other
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Total net securities gains (losses)	$ 2	$ (2)	$ (1)	$ 4	$ (2)

Securities - Narrative (Details

Securities - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Jan. 01, 2020
Debt Securities, Available-for-sale [Line Items]
Accounting Standards Update [Extensible List]			us-gaap:AccountingStandardsUpdate201602Member	us-gaap:AccountingStandardsUpdate201613Member	us-gaap:AccountingStandardsUpdate201802Member
Debt securities, available-for-sale, allowance for credit loss	$ 12
AOCI, transfers from AFS to HTM Securities, gross unrealized losses	$ 49	$ 65
Cumulative Effect, Period Of Adoption, Adjustment
Debt Securities, Available-for-sale [Line Items]
Debt securities, available-for-sale, allowance for credit loss						$ 7

Securities - Fair Value of Inve

Securities - Fair Value of Investments with Continuous Unrealized Loss Position (Details) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Available-for-sale:
Less than 12 months, Fair value	$ 11,037,000,000	$ 23,012,000,000
Less than 12 months, Unrealized losses	56,000,000	92,000,000
12 months or more, Fair value	3,755,000,000	10,774,000,000
12 months or more, Unrealized losses	79,000,000	146,000,000
Total, Fair value	14,792,000,000	33,786,000,000
Total, Unrealized losses	135,000,000	238,000,000
AOCI, transfers from AFS to HTM Securities, gross unrealized losses, greater than 12 months	49,000,000	65,000,000
AOCI, transfers from AFS to HTM Securities, gross unrealized losses, less than 12 months	0	0
Grantor Trust
Available-for-sale:
Less than 12 months, Fair value	370,000,000
Agency RMBS
Available-for-sale:
Less than 12 months, Fair value	1,126,000,000	8,373,000,000
Less than 12 months, Unrealized losses	3,000,000	33,000,000
12 months or more, Fair value	2,102,000,000	5,912,000,000
12 months or more, Unrealized losses	52,000,000	110,000,000
Total, Fair value	3,228,000,000	14,285,000,000
Total, Unrealized losses	55,000,000	143,000,000
U.S. Treasury
Available-for-sale:
Less than 12 months, Fair value	1,041,000,000	1,976,000,000
Less than 12 months, Unrealized losses	1,000,000	16,000,000
12 months or more, Fair value	0	766,000,000
12 months or more, Unrealized losses	0	4,000,000
Total, Fair value	1,041,000,000	2,742,000,000
Total, Unrealized losses	1,000,000	20,000,000
Sovereign debt/sovereign guaranteed
Available-for-sale:
Less than 12 months, Fair value	1,069,000,000	4,045,000,000
Less than 12 months, Unrealized losses	1,000,000	10,000,000
12 months or more, Fair value	119,000,000	225,000,000
12 months or more, Unrealized losses	0	1,000,000
Total, Fair value	1,188,000,000	4,270,000,000
Total, Unrealized losses	1,000,000	11,000,000
Agency commercial mortgage-backed securities (“MBS”)
Available-for-sale:
Less than 12 months, Fair value	566,000,000	1,960,000,000
Less than 12 months, Unrealized losses	1,000,000	12,000,000
12 months or more, Fair value	306,000,000	775,000,000
12 months or more, Unrealized losses	2,000,000	5,000,000
Total, Fair value	872,000,000	2,735,000,000
Total, Unrealized losses	3,000,000	17,000,000
Foreign covered bonds
Available-for-sale:
Less than 12 months, Fair value		1,009,000,000
Less than 12 months, Unrealized losses		4,000,000
12 months or more, Fair value		690,000,000
12 months or more, Unrealized losses		3,000,000
Total, Fair value		1,699,000,000
Total, Unrealized losses		7,000,000
Supranational
Available-for-sale:
Less than 12 months, Fair value	1,583,000,000	1,336,000,000
Less than 12 months, Unrealized losses	1,000,000	6,000,000
12 months or more, Fair value	127,000,000	360,000,000
12 months or more, Unrealized losses	0	0
Total, Fair value	1,710,000,000	1,696,000,000
Total, Unrealized losses	1,000,000	6,000,000
Collateralized loan obligations (“CLOs”)
Available-for-sale:
Less than 12 months, Fair value	3,449,000,000	1,066,000,000
Less than 12 months, Unrealized losses	31,000,000	2,000,000
12 months or more, Fair value	579,000,000	1,499,000,000
12 months or more, Unrealized losses	13,000,000	14,000,000
Total, Fair value	4,028,000,000	2,565,000,000
Total, Unrealized losses	44,000,000	16,000,000
Foreign government agencies
Available-for-sale:
Less than 12 months, Fair value		1,706,000,000
Less than 12 months, Unrealized losses		2,000,000
12 months or more, Fair value		47,000,000
12 months or more, Unrealized losses		0
Total, Fair value		1,753,000,000
Total, Unrealized losses		2,000,000
U.S. government agencies
Available-for-sale:
Less than 12 months, Fair value	99,000,000	377,000,000
Less than 12 months, Unrealized losses	2,000,000	2,000,000
12 months or more, Fair value	0	0
12 months or more, Unrealized losses	0	0
Total, Fair value	99,000,000	377,000,000
Total, Unrealized losses	2,000,000	2,000,000
Other ABS
Available-for-sale:
Less than 12 months, Fair value	675,000,000	456,000,000
Less than 12 months, Unrealized losses	2,000,000	3,000,000
12 months or more, Fair value	229,000,000	305,000,000
12 months or more, Unrealized losses	2,000,000	2,000,000
Total, Fair value	904,000,000	761,000,000
Total, Unrealized losses	4,000,000	5,000,000
Non-agency commercial MBS
Available-for-sale:
Less than 12 months, Fair value	358,000,000	525,000,000
Less than 12 months, Unrealized losses	6,000,000	2,000,000
12 months or more, Fair value	194,000,000	45,000,000
12 months or more, Unrealized losses	4,000,000	0
Total, Fair value	552,000,000	570,000,000
Total, Unrealized losses	10,000,000	2,000,000
Non-agency RMBS
Available-for-sale:
Less than 12 months, Fair value	636,000,000	101,000,000
Less than 12 months, Unrealized losses	3,000,000	0
12 months or more, Fair value	97,000,000	113,000,000
12 months or more, Unrealized losses	6,000,000	7,000,000
Total, Fair value	733,000,000	214,000,000
Total, Unrealized losses	9,000,000	7,000,000
Non-agency RMBS | Grantor Trust
Available-for-sale:
Less than 12 months, Fair value	22,000,000	2,000,000
Less than 12 months, Unrealized losses	1,000,000	1,000,000
12 months or more, Fair value	1,000,000	2,000,000
12 months or more, Unrealized losses	1,000,000	1,000,000
State and political subdivisions
Available-for-sale:
Less than 12 months, Fair value	262,000,000	0
Less than 12 months, Unrealized losses	4,000,000	0
12 months or more, Fair value	2,000,000	16,000,000
12 months or more, Unrealized losses	0	0
Total, Fair value	264,000,000	16,000,000
Total, Unrealized losses	4,000,000	0
Corporate bonds
Available-for-sale:
Less than 12 months, Fair value		82,000,000
Less than 12 months, Unrealized losses		0
12 months or more, Fair value		21,000,000
12 months or more, Unrealized losses		0
Total, Fair value		103,000,000
Total, Unrealized losses		$ 0
Corporate Bond Securities
Available-for-sale:
Less than 12 months, Fair value	173,000,000
Less than 12 months, Unrealized losses	1,000,000
12 months or more, Fair value	0
12 months or more, Unrealized losses	0
Total, Fair value	173,000,000
Total, Unrealized losses	$ 1,000,000

Securities - Debt Securities, H

Securities - Debt Securities, Held-to-maturity, Credit Quality Indicator (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 46,096	$ 34,483
Unrealized gain (loss)	$ 1,362
Ratings (percent)	0.00%
Agency RMBS
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 37,086	27,357
Unrealized gain (loss)	$ 1,107
Ratings (percent)	0.00%
U.S. Treasury
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 3,288	3,818
Unrealized gain (loss)	$ 103
Ratings (percent)	0.00%
U.S. government agencies
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 2,266	1,023
Unrealized gain (loss)	$ 1
Ratings (percent)	0.00%
Agency commercial mortgage-backed securities (“MBS”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 2,041	1,326
Unrealized gain (loss)	$ 107
Ratings (percent)	0.00%
Commercial paper/certificates of deposit (“CDs”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 295
Unrealized gain (loss)	$ 0
Ratings (percent)	0.00%
Sovereign debt/sovereign guaranteed
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 983	756
Unrealized gain (loss)	$ 41
Ratings (percent)	0.00%
Non-agency RMBS
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 70	80
Unrealized gain (loss)	$ 2
Ratings (percent)	1.00%
Supranational
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 52	27
Unrealized gain (loss)	$ 1
Ratings (percent)	0.00%
State and political subdivisions
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 15	$ 17
Unrealized gain (loss)	$ 0
Ratings (percent)	86.00%
AAA/ AA-
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	99.00%
AAA/ AA- | Agency RMBS
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	100.00%
AAA/ AA- | U.S. Treasury
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	100.00%
AAA/ AA- | U.S. government agencies
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	100.00%
AAA/ AA- | Agency commercial mortgage-backed securities (“MBS”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	100.00%
AAA/ AA- | Commercial paper/certificates of deposit (“CDs”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
AAA/ AA- | Sovereign debt/sovereign guaranteed
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	100.00%
AAA/ AA- | Non-agency RMBS
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	39.00%
AAA/ AA- | Supranational
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	100.00%
AAA/ AA- | State and political subdivisions
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	6.00%
A/ A-
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
A/ A- | Agency RMBS
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
A/ A- | U.S. Treasury
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
A/ A- | U.S. government agencies
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
A/ A- | Agency commercial mortgage-backed securities (“MBS”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
A/ A- | Commercial paper/certificates of deposit (“CDs”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
A/ A- | Sovereign debt/sovereign guaranteed
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
A/ A- | Non-agency RMBS
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	46.00%
A/ A- | Supranational
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
A/ A- | State and political subdivisions
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	2.00%
BBB/ BBB-
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
BBB/ BBB- | Agency RMBS
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
BBB/ BBB- | U.S. Treasury
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
BBB/ BBB- | U.S. government agencies
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
BBB/ BBB- | Agency commercial mortgage-backed securities (“MBS”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
BBB/ BBB- | Commercial paper/certificates of deposit (“CDs”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
BBB/ BBB- | Sovereign debt/sovereign guaranteed
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
BBB/ BBB- | Non-agency RMBS
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	2.00%
BBB/ BBB- | Supranational
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
BBB/ BBB- | State and political subdivisions
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	6.00%
BB and lower
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
BB and lower | Agency RMBS
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
BB and lower | U.S. Treasury
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
BB and lower | U.S. government agencies
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
BB and lower | Agency commercial mortgage-backed securities (“MBS”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
BB and lower | Commercial paper/certificates of deposit (“CDs”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
BB and lower | Sovereign debt/sovereign guaranteed
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
BB and lower | Non-agency RMBS
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	12.00%
BB and lower | Supranational
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
BB and lower | State and political subdivisions
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
A1+/A2/SP-1+
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	1.00%
A1+/A2/SP-1+ | Agency RMBS
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
A1+/A2/SP-1+ | U.S. Treasury
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
A1+/A2/SP-1+ | U.S. government agencies
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
A1+/A2/SP-1+ | Agency commercial mortgage-backed securities (“MBS”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
A1+/A2/SP-1+ | Commercial paper/certificates of deposit (“CDs”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	100.00%
A1+/A2/SP-1+ | Sovereign debt/sovereign guaranteed
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
A1+/A2/SP-1+ | Non-agency RMBS
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
A1+/A2/SP-1+ | Supranational
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
A1+/A2/SP-1+ | State and political subdivisions
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%

Securities - Maturity Distribut

Securities - Maturity Distribution and Yield of Investment Securities Portfolio (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Securities available-for-sale, Amount:
One year or less	$ 16,165
Over 1 through 5 years	30,751
Over 5 through 10 years	11,448
Over 10 years	3,965
Total	109,243	$ 88,550
Securities held-to-maturity, Amount:
One year or less	1,092
Over 1 through 5 years	4,704
Over 5 through 10 years	596
Over 10 years	507
Amortized cost	46,096	34,483
Mortgage-backed securities
Securities available-for-sale, Amount:
Without single maturity date	39,327
Securities held-to-maturity, Amount:
Mortgage-backed securities	39,197
Asset-backed securities
Securities available-for-sale, Amount:
Without single maturity date	7,587
U.S. Treasury
Securities available-for-sale, Amount:
One year or less	4,405
Over 1 through 5 years	10,546
Over 5 through 10 years	6,517
Over 10 years	3,265
Total	$ 24,733	15,431
Securities available-for-sale (Yield):
One year or less	1.11%
Over 1 through 5 years	1.28%
Over 5 through 10 years	1.57%
Over 10 years	3.11%
Total	1.57%
Securities held-to-maturity, Amount:
One year or less	$ 785
Over 1 through 5 years	2,503
Over 5 through 10 years	0
Over 10 years	0
Amortized cost	$ 3,288	3,818
Securities held-to-maturity (Yield):
One year or less	1.43%
Over 1 through 5 years	1.90%
Over 5 through 10 years	0.00%
Over 10 years	0.00%
Total	1.79%
U.S. government agencies
Securities available-for-sale, Amount:
One year or less	$ 25
Over 1 through 5 years	1,866
Over 5 through 10 years	1,468
Over 10 years	119
Total	$ 3,478	1,949
Securities available-for-sale (Yield):
One year or less	2.55%
Over 1 through 5 years	0.85%
Over 5 through 10 years	2.51%
Over 10 years	2.06%
Total	1.60%
Securities held-to-maturity, Amount:
One year or less	$ 0
Over 1 through 5 years	1,253
Over 5 through 10 years	564
Over 10 years	449
Amortized cost	$ 2,266	1,023
Securities held-to-maturity (Yield):
One year or less	0.00%
Over 1 through 5 years	0.82%
Over 5 through 10 years	1.13%
Over 10 years	2.28%
Total	1.19%
State and political subdivisions
Securities available-for-sale, Amount:
One year or less	$ 549
Over 1 through 5 years	570
Over 5 through 10 years	223
Over 10 years	348
Total	$ 1,690	1,044
Securities available-for-sale (Yield):
One year or less	1.49%
Over 1 through 5 years	3.16%
Over 5 through 10 years	1.88%
Over 10 years	2.22%
Total	2.26%
Securities held-to-maturity, Amount:
One year or less	$ 0
Over 1 through 5 years	2
Over 5 through 10 years	0
Over 10 years	13
Amortized cost	$ 15	$ 17
Securities held-to-maturity (Yield):
One year or less	0.00%
Over 1 through 5 years	5.66%
Over 5 through 10 years	0.00%
Over 10 years	4.76%
Total	4.91%
Other bonds, notes and debentures
Securities available-for-sale, Amount:
One year or less	$ 11,186
Over 1 through 5 years	17,769
Over 5 through 10 years	3,240
Over 10 years	233
Total	$ 32,428
Securities available-for-sale (Yield):
One year or less	0.44%
Over 1 through 5 years	0.61%
Over 5 through 10 years	0.56%
Over 10 years	0.62%
Total	0.55%
Securities held-to-maturity, Amount:
One year or less	$ 307
Over 1 through 5 years	946
Over 5 through 10 years	32
Over 10 years	45
Amortized cost	$ 1,330
Securities held-to-maturity (Yield):
One year or less	1.99%
Over 1 through 5 years	0.67%
Over 5 through 10 years	0.92%
Over 10 years	0.35%
Total	0.96%
Mortgage/ asset-backed
Securities available-for-sale, Amount:
Total	$ 46,914
Securities available-for-sale (Yield):
Total	2.10%
Securities held-to-maturity, Amount:
Amortized cost	$ 39,197
Securities held-to-maturity (Yield):
Total	2.57%
Mortgage/ asset-backed | Mortgage-backed securities
Securities available-for-sale, Amount:
Without single maturity date	$ 39,327
Securities available-for-sale (Yield):
Without single maturity date	2.18%
Securities held-to-maturity, Amount:
Mortgage-backed securities	$ 39,197
Securities held-to-maturity (Yield):
Without single maturity date	2.57%
Mortgage/ asset-backed | Asset-backed securities
Securities available-for-sale, Amount:
Without single maturity date	$ 7,587
Securities available-for-sale (Yield):
Without single maturity date	1.72%

Securities - Pledged assets (De

Securities - Pledged assets (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Securities [Abstract]
Pledged assets	$ 141,000	$ 118,000
Pledged collateral for potential borrowings at the Federal Reserve Discount Window	108,000	80,000
Pledged asset, other not separately reported, potential borrowings at FHLB	5,000	6,000
Pledged securities	123,000	98,000
Pledged loans	11,000	13,000
Pledged trading assets	6,000	7,000
Pledged interest-bearing deposits	1,000	1,000
Financial instruments owned and pledged as collateral, amount eligible to be pledged by counterparty	23,000	29,000
Pledged collateral for potential borrowings at the Federal Reserve	295
Pledged assets permitted to be sold or repledged	112,000	153,000
Market value of securities received as collateral that have been sold or repledged	80,000	107,000
Cash segregated under federal or other regulations	3,000	2,000
Securities segregated under federal or other regulations	$ 4,000	$ 1,000

Loans and asset quality - Loan

Loans and asset quality - Loan Distribution and Industry Concentrations (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 55,491	$ 54,953
Unearned income on lease financings	285	313
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,900
Financial institutions
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	11,000
Other residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	423	494
Overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		2,700
Margin loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	13,500	13,400
Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	43,186	42,548
Domestic | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,839	1,442
Domestic | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	5,987	5,575
Domestic | Financial institutions
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	4,915	4,852
Domestic | Lease financings
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	482	537
Domestic | Wealth management loans and mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	15,805	16,050
Domestic | Other residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	423	494
Domestic | Overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	899	524
Domestic | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,616	1,167
Domestic | Margin loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	11,220	11,907
Foreign
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	12,305	12,405
Foreign | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	102	347
Foreign | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	5	7
Foreign | Financial institutions
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	6,097	7,626
Foreign | Lease financings
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	596	576
Foreign | Wealth management loans and mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	121	140
Foreign | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	3,106	2,230
Foreign | Margin loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 2,278	$ 1,479

Loans and asset quality - Loans

Loans and asset quality - Loans Additional Information (Details)	9 Months Ended
	Sep. 30, 2020segmentclass_of_receivable
Receivables [Abstract]
Number of portfolio segments (segment) | segment	3
Number of classes of financing receivables (class of receivable) | class_of_receivable	6

Loans and asset quality - Allow

Loans and asset quality - Allowance for Credit Losses Activity (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Loss [Line Items]
Accounting Standards Update [Extensible List]					us-gaap:AccountingStandardsUpdate201602Member	us-gaap:AccountingStandardsUpdate201613Member	us-gaap:AccountingStandardsUpdate201802Member
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 454		$ 241	$ 216	$ 252	$ 252
Charge-offs	0	$ 0	(1)	0	(13)
Recoveries	1	3	0	4	2
Net (charge-offs) recoveries	1	3	(1)	4	(11)
Provision	5	163	(16)	309	(17)
Ending balance	460	454	224	460	224	216	$ 252
Individually evaluated for impairment:
Loan balance	17	18	16	17	16
Allowance for loan losses	0	0	0	0	0
Collectively evaluated for impairment:
Loan balance			54,865		54,865
Allowance for loan losses			127		127
Collateral dependent loans	17	18		17
Fair value of collateral	25	26		25
Loan balance			54,865		54,865
Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	302
Ending balance	325	302	127	325	127
Lending-related commitments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	152
Ending balance	135	152	97	135	97
Other Financial Instruments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Provision				12
Domestic | Overdrafts
Collectively evaluated for impairment:
Loan balance			1,247		1,247
Loan balance			1,247		1,247
Domestic | Margin loans
Collectively evaluated for impairment:
Loan balance			10,177		10,177
Loan balance			10,177		10,177
Domestic | Other
Collectively evaluated for impairment:
Loan balance			1,143		1,143
Loan balance			1,143		1,143
Foreign
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			33	24	32	32
Charge-offs			0	0	0
Recoveries			0	0	0
Net (charge-offs) recoveries			0	0	0
Provision			(5)	0	(4)
Ending balance	0		28	0	28	24	32
Individually evaluated for impairment:
Loan balance			0		0
Allowance for loan losses			0		0
Collectively evaluated for impairment:
Loan balance			13,871		13,871
Allowance for loan losses			19		19
Loan balance			13,871		13,871
Foreign | Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Ending balance			19		19
Foreign | Lending-related commitments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Ending balance			9		9
Commercial | Domestic
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	40		77	60	81	81
Charge-offs	0	0	(1)	0	(12)
Recoveries	0	0	0	0	0
Net (charge-offs) recoveries	0	0	(1)	0	(12)
Provision	(13)	14	(15)	10	(8)
Ending balance	27	40	61	27	61	60	81
Individually evaluated for impairment:
Loan balance	0	0	0	0	0
Allowance for loan losses	0	0	0	0	0
Collectively evaluated for impairment:
Loan balance			1,335		1,335
Allowance for loan losses			10		10
Loan balance			1,335		1,335
Commercial | Domestic | Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	23
Ending balance	14	23	10	14	10
Commercial | Domestic | Lending-related commitments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	17
Ending balance	13	17	51	13	51
Commercial | Foreign | Reclassification
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Ending balance			10		10
Commercial real estate | Domestic
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	372		72	76	75	75
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0	0
Net (charge-offs) recoveries	0	0	0	0	0
Provision	14	164	5	296	2
Ending balance	386	372	77	386	77	76	75
Individually evaluated for impairment:
Loan balance	0	0	0	0	0
Allowance for loan losses	0	0	0	0	0
Collectively evaluated for impairment:
Loan balance			5,292		5,292
Allowance for loan losses			57		57
Loan balance			5,292		5,292
Commercial real estate | Domestic | Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	244
Ending balance	270	244	57	270	57
Commercial real estate | Domestic | Lending-related commitments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	128
Ending balance	116	128	20	116	20
Financial institutions | Domestic
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	16		21	20	22	22
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0	0
Net (charge-offs) recoveries	0	0	0	0	0
Provision	(5)	(2)	0	(3)	(1)
Ending balance	11	16	21	11	21	20	22
Individually evaluated for impairment:
Loan balance	0	0	0	0	0
Allowance for loan losses	0	0	0	0	0
Collectively evaluated for impairment:
Loan balance			4,973		4,973
Allowance for loan losses			7		7
Loan balance			4,973		4,973
Financial institutions | Domestic | Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	11
Ending balance	7	11	7	7	7
Financial institutions | Domestic | Lending-related commitments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	5
Ending balance	4	5	14	4	14
Financial institutions | Foreign
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	11
Ending balance	8	11		8
Financial institutions | Foreign | Reclassification
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Ending balance			10		10
Lease financings | Domestic
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	3		4	3	5	5
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0	0
Net (charge-offs) recoveries	0	0	0	0	0
Provision	0	(10)	(1)	0	(2)
Ending balance	3	3	3	3	3	3	5
Individually evaluated for impairment:
Loan balance	0	0	0	0	0
Allowance for loan losses	0	0	0	0	0
Collectively evaluated for impairment:
Loan balance			559		559
Allowance for loan losses			3		3
Loan balance			559		559
Lease financings | Domestic | Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	3
Ending balance	3	3	3	3	3
Lease financings | Domestic | Lending-related commitments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	0
Ending balance	0	0	0	0	0
Lease financings | Foreign | Reclassification
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Ending balance			4		4
Wealth management loans and mortgages | Domestic
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	11		20	20	21	21
Charge-offs	0	0	0	0	(1)
Recoveries	0	0	0	0	0
Net (charge-offs) recoveries	0	0	0	0	(1)
Provision	4	2	0	7	0
Ending balance	15	11	20	15	20	20	21
Individually evaluated for impairment:
Loan balance	17	18	16	17	16
Allowance for loan losses	0	0	0	0	0
Collectively evaluated for impairment:
Loan balance			15,748		15,748
Allowance for loan losses			17		17
Loan balance			15,748		15,748
Wealth management loans and mortgages | Domestic | Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	9
Ending balance	13	9	17	13	17
Wealth management loans and mortgages | Domestic | Lending-related commitments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	2
Ending balance	2	2	3	2	3
Other residential mortgages | Domestic
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	12		14	13	16	16
Charge-offs	0	0	0	0	0
Recoveries	1	3	0	4	2
Net (charge-offs) recoveries	1	3	0	4	2
Provision	5	(5)	0	(1)	(4)
Ending balance	18	12	14	18	14	13	16
Individually evaluated for impairment:
Loan balance	0	0	0	0	0
Allowance for loan losses	0	0	0	0	0
Collectively evaluated for impairment:
Loan balance			520		520
Allowance for loan losses			14		14
Loan balance			520		520
Other residential mortgages | Domestic | Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	12
Ending balance	18	12	14	18	14
Other residential mortgages | Domestic | Lending-related commitments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	0
Ending balance	0	0	0	0	0
Other Financial Instruments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Provision	$ 4	(20)
All other | Domestic
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			0		0	0
Charge-offs			0		0
Recoveries			0		0
Net (charge-offs) recoveries			0		0
Provision			0		0
Ending balance			0		0		$ 0
Individually evaluated for impairment:
Loan balance			0		0
Allowance for loan losses			0		0
Collectively evaluated for impairment:
Loan balance			12,567		12,567
Allowance for loan losses			0		0
Loan balance			12,567		12,567
All other | Domestic | Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Ending balance			0		0
All other | Domestic | Lending-related commitments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Ending balance			$ 0		$ 0
Cumulative Effect, Period Of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				(69)
Ending balance						(69)
Cumulative Effect, Period Of Adoption, Adjustment | Foreign
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				(24)
Ending balance						(24)
Cumulative Effect, Period Of Adoption, Adjustment | Commercial | Domestic
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				(43)
Ending balance						(43)
Cumulative Effect, Period Of Adoption, Adjustment | Commercial real estate | Domestic
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				14
Ending balance						14
Cumulative Effect, Period Of Adoption, Adjustment | Financial institutions | Domestic
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				(6)
Ending balance						(6)
Cumulative Effect, Period Of Adoption, Adjustment | Lease financings | Domestic
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				0
Ending balance						0
Cumulative Effect, Period Of Adoption, Adjustment | Wealth management loans and mortgages | Domestic
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				(12)
Ending balance						(12)
Cumulative Effect, Period Of Adoption, Adjustment | Other residential mortgages | Domestic
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				2
Ending balance						2
Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		288		147
Ending balance						147
Cumulative Effect, Period of Adoption, Adjusted Balance | Foreign
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				0
Ending balance						0
Cumulative Effect, Period of Adoption, Adjusted Balance | Commercial | Domestic
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		26		17
Ending balance						17
Cumulative Effect, Period of Adoption, Adjusted Balance | Commercial real estate | Domestic
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		208		90
Ending balance						90
Cumulative Effect, Period of Adoption, Adjusted Balance | Financial institutions | Domestic
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		18		14
Ending balance						14
Cumulative Effect, Period of Adoption, Adjusted Balance | Lease financings | Domestic
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		13		3
Ending balance						3
Cumulative Effect, Period of Adoption, Adjusted Balance | Wealth management loans and mortgages | Domestic
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		9		8
Ending balance						8
Cumulative Effect, Period of Adoption, Adjusted Balance | Other residential mortgages | Domestic
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		$ 14		$ 15
Ending balance						$ 15

Loans and asset quality - Nonpe

Loans and asset quality - Nonperforming Assets (Details) - Domestic - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable, Impaired [Line Items]
With an allowance	$ 66
Without an allowance	17
Total nonperforming loans	83	$ 86
With an allowance, Other assets owned	0
Without an allowance, Other assets owned	1
Other assets owned	1	3
With an allowance, Total nonperforming assets	66
Without an allowance, Total nonperforming assets	18
Total nonperforming assets	84	89
Other residential mortgages
Financing Receivable, Impaired [Line Items]
With an allowance	56
Without an allowance	0
Total nonperforming loans	56	62
Wealth management loans and mortgages
Financing Receivable, Impaired [Line Items]
With an allowance	10
Without an allowance	17
Total nonperforming loans	$ 27	$ 24

Loans and asset quality - Past

Loans and asset quality - Past Due Loans (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable, Past Due [Line Items]
Total past due loans	$ 37	$ 87
30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total past due loans	36	37
60 to 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total past due loans	1	50
Equal to Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total past due loans	0	0
Domestic | Wealth management loans and mortgages
Financing Receivable, Past Due [Line Items]
Total past due loans	21	27
Domestic | Wealth management loans and mortgages | 30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total past due loans	20	22
Domestic | Wealth management loans and mortgages | 60 to 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total past due loans	1	5
Domestic | Wealth management loans and mortgages | Equal to Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total past due loans	0	0
Domestic | Other residential mortgages
Financing Receivable, Past Due [Line Items]
Total past due loans	7	11
Domestic | Other residential mortgages | 30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total past due loans	7	8
Domestic | Other residential mortgages | 60 to 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total past due loans	0	3
Domestic | Other residential mortgages | Equal to Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total past due loans	0	0
Domestic | Financial institutions
Financing Receivable, Past Due [Line Items]
Total past due loans	0	31
Domestic | Financial institutions | 30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total past due loans	0	1
Domestic | Financial institutions | 60 to 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total past due loans	0	30
Domestic | Financial institutions | Equal to Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Total past due loans	0	0
Domestic | Commercial real estate
Financing Receivable, Past Due [Line Items]
Total past due loans	9	18
Domestic | Commercial real estate | 30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total past due loans	9	6
Domestic | Commercial real estate | 60 to 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total past due loans	0	12
Domestic | Commercial real estate | Equal to Greater than 90 Days Past Due
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) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, CARES Act	$ 106	$ 282
Unpaid principal balance	174
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, CARES Act	$ 56
Other residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding recorded investment post-modification			$ 4

Loans and asset quality - Credi

Loans and asset quality - Credit Risk Profile by Origination (Details) $ in Millions	Sep. 30, 2020USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]
YTD20	$ 5,658
2019	3,180
2018	2,006
2017	2,703
2016	2,526
Prior to 2016	4,884
Amortized cost	30,542
Converted to term loans - Amortized cost	29
Total	51,528
Accrued interest receivable	61
Wealth management mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
YTD20	781
2019	1,082
2018	682
2017	1,267
2016	1,622
Prior to 2016	2,748
Amortized cost	34
Converted to term loans - Amortized cost	0
Total	8,216
Wealth management loans and mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
YTD20	812
2019	1,162
2018	693
2017	1,416
2016	1,678
Prior to 2016	2,833
Amortized cost	7,332
Converted to term loans - Amortized cost	0
Total	15,926
Accrued interest receivable	29
Other residential mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
YTD20	0
2019	0
2018	0
2017	0
2016	0
Prior to 2016	423
Amortized cost	0
Converted to term loans - Amortized cost	0
Total	423
Accrued interest receivable	2
Other loans
Financing Receivable, Credit Quality Indicator [Line Items]
YTD20	0
2019	0
2018	0
2017	0
2016	0
Prior to 2016	0
Amortized cost	1,658
Converted to term loans - Amortized cost	0
Total	1,658
Accrued interest receivable	1
Margin loans
Financing Receivable, Credit Quality Indicator [Line Items]
YTD20	3,553
2019	0
2018	0
2017	0
2016	0
Prior to 2016	0
Amortized cost	9,945
Converted to term loans - Amortized cost	0
Total	13,498
Accrued interest receivable	7
Investment grade | Loans receivable
Financing Receivable, Credit Quality Indicator [Line Items]
YTD20	31
2019	80
2018	11
2017	149
2016	56
Prior to 2016	85
Amortized cost	7,235
Converted to term loans - Amortized cost	0
Total	7,647
Non-investment grade | Loans receivable
Financing Receivable, Credit Quality Indicator [Line Items]
YTD20	0
2019	0
2018	0
2017	0
2016	0
Prior to 2016	0
Amortized cost	63
Converted to term loans - Amortized cost	0
Total	63
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
YTD20	238
2019	134
2018	103
2017	450
2016	57
Prior to 2016	0
Amortized cost	959
Converted to term loans - Amortized cost	0
Total	1,941
Accrued interest receivable	1
Commercial | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
YTD20	153
2019	73
2018	96
2017	450
2016	57
Prior to 2016	0
Amortized cost	893
Converted to term loans - Amortized cost	0
Total	1,722
Commercial | Non-investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
YTD20	85
2019	61
2018	7
2017	0
2016	0
Prior to 2016	0
Amortized cost	66
Converted to term loans - Amortized cost	0
Total	219
Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
YTD20	771
2019	1,591
2018	1,146
2017	702
2016	752
Prior to 2016	582
Amortized cost	419
Converted to term loans - Amortized cost	29
Total	5,992
Accrued interest receivable	8
Commercial real estate | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
YTD20	611
2019	1,065
2018	542
2017	543
2016	385
Prior to 2016	430
Amortized cost	175
Converted to term loans - Amortized cost	0
Total	3,751
Commercial real estate | Non-investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
YTD20	160
2019	526
2018	604
2017	159
2016	367
Prior to 2016	152
Amortized cost	244
Converted to term loans - Amortized cost	29
Total	2,241
Financial institutions
Financing Receivable, Credit Quality Indicator [Line Items]
YTD20	158
2019	274
2018	47
2017	125
2016	14
Prior to 2016	165
Amortized cost	10,229
Converted to term loans - Amortized cost	0
Total	11,012
Accrued interest receivable	13
Financial institutions | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
YTD20	60
2019	238
2018	47
2017	125
2016	14
Prior to 2016	165
Amortized cost	8,471
Converted to term loans - Amortized cost	0
Total	9,120
Financial institutions | Non-investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
YTD20	98
2019	36
2018	0
2017	0
2016	0
Prior to 2016	0
Amortized cost	1,758
Converted to term loans - Amortized cost	0
Total	1,892
Lease financings
Financing Receivable, Credit Quality Indicator [Line Items]
YTD20	126
2019	19
2018	17
2017	10
2016	25
Prior to 2016	881
Amortized cost	0
Converted to term loans - Amortized cost	0
Total	1,078
Accrued interest receivable	$ 0

Loans and asset quality - Cre_2

Loans and asset quality - Credit Risk Indicators Narrative (Details) - USD ($)	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of exposure to investment grade securities	95.00%
Percentage of financial institution exposure secured	75.00%
Percent of financial institution exposure expiring within one year	89.00%
Loans	$ 55,491,000,000	$ 54,953,000,000
Wealth management loans and mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan to value ratio at origination (percent)	62.00%
Percentage of past due mortgages (less than)	1.00%
Wealth management loans and mortgages | California
Accounts, Notes, Loans and Financing Receivable [Line Items]
Geographic concentrations (percent)	22.00%
Wealth management loans and mortgages | New York
Accounts, Notes, Loans and Financing Receivable [Line Items]
Geographic concentrations (percent)	17.00%
Wealth management loans and mortgages | Massachusetts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Geographic concentrations (percent)	10.00%
Wealth management loans and mortgages | Florida
Accounts, Notes, Loans and Financing Receivable [Line Items]
Geographic concentrations (percent)	8.00%
Wealth management loans and mortgages | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Geographic concentrations (percent)	43.00%
Other residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 423,000,000	494,000,000
Overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		2,700,000,000
Overdraft repayment period	2 days
Margin loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 13,500,000,000	13,400,000,000
Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	43,186,000,000	42,548,000,000
Domestic | Wealth management loans and mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	15,805,000,000	16,050,000,000
Domestic | Other residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	423,000,000	494,000,000
Purchased mortgages	76,000,000
Domestic | Overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	899,000,000	524,000,000
Domestic | Margin loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 11,220,000,000	11,907,000,000
Domestic | Margin loans | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Required daily collateral margin (in excess of)	100.00%
Equal to or greater than 60 days past due | Domestic | Other residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of past due mortgages (less than)	19.00%
Overdrafts | Overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 3,963,000,000
Operating segments
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	55,491,000,000	$ 54,953,000,000
Federal funds sold and securities purchased under resale agreements, allowance for credit losses	$ 0

Goodwill and intangible asset_2

Goodwill and intangible assets - Goodwill (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Goodwill [Roll Forward]
Beginning balance	$ 17,386	$ 17,350
Foreign currency translation	(29)	(102)
Other	0
Ending balance	17,357	17,248
Investment Services
Goodwill [Roll Forward]
Beginning balance	8,332	8,333
Foreign currency translation	21	(45)
Other	47
Ending balance	8,400	8,288
Investment and Wealth Management
Goodwill [Roll Forward]
Beginning balance	9,007	8,970
Foreign currency translation	(50)	(57)
Other	0
Ending balance	8,957	8,913
Other
Goodwill [Roll Forward]
Beginning balance	47	47
Foreign currency translation	0	0
Other	(47)
Ending balance	$ 0	$ 47

Goodwill and intangible asset_3

Goodwill and intangible assets - Intangible Assets by Business Segment (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Intangible Assets [Roll Forward]
Beginning Balance				$ 3,107	$ 3,220
Amortization	$ (26)	$ (26)	$ (30)	(78)	(89)
Foreign currency translation				(3)	(7)
Ending Balance	3,026		3,124	3,026	3,124
Investment Services
Intangible Assets [Roll Forward]
Beginning Balance				678	758
Amortization				(54)	(61)
Foreign currency translation				1	(1)
Ending Balance	625		696	625	696
Investment and Wealth Management
Intangible Assets [Roll Forward]
Beginning Balance				1,580	1,613
Amortization				(24)	(28)
Foreign currency translation				(4)	(6)
Ending Balance	1,552		1,579	1,552	1,579
Other
Intangible Assets [Roll Forward]
Beginning Balance				849	849
Amortization				0	0
Foreign currency translation				0	0
Ending Balance	$ 849		$ 849	$ 849	$ 849

Goodwill and intangible asset_4

Goodwill and intangible assets - Intangible Assets by Type (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2018
Intangible Assets by Major Class [Line Items]
Gross carrying amount	$ 4,838	$ 4,881
Accumulated amortization	(1,812)	(1,774)
Net carrying amount	3,026	3,107	$ 3,124	$ 3,220
Finite-lived Intangible Assets
Intangible Assets by Major Class [Line Items]
Gross carrying amount	2,257	2,296
Accumulated amortization	(1,812)	(1,774)
Net carrying amount	$ 445	522
Finite-lived Intangible Assets | Weighted Average
Intangible Assets by Major Class [Line Items]
Remaining weighted- average amortization period	10 years
Finite-lived Intangible Assets | Customer contracts—Investment Services
Intangible Assets by Major Class [Line Items]
Gross carrying amount	$ 1,482	1,520
Accumulated amortization	(1,228)	(1,214)
Net carrying amount	$ 254	306
Finite-lived Intangible Assets | Customer contracts—Investment Services | Weighted Average
Intangible Assets by Major Class [Line Items]
Remaining weighted- average amortization period	10 years
Finite-lived Intangible Assets | Customer relationships
Intangible Assets by Major Class [Line Items]
Gross carrying amount	$ 711	712
Accumulated amortization	(563)	(544)
Net carrying amount	$ 148	168
Finite-lived Intangible Assets | Customer relationships | Weighted Average
Intangible Assets by Major Class [Line Items]
Remaining weighted- average amortization period	10 years
Finite-lived Intangible Assets | Other
Intangible Assets by Major Class [Line Items]
Gross carrying amount	$ 64	64
Accumulated amortization	(21)	(16)
Net carrying amount	$ 43	48
Finite-lived Intangible Assets | Other | Weighted Average
Intangible Assets by Major Class [Line Items]
Remaining weighted- average amortization period	14 years
Indefinite-lived Intangible Assets
Intangible Assets by Major Class [Line Items]
Gross carrying amount	$ 2,581	2,585
Net carrying amount	2,581	2,585
Indefinite-lived Intangible Assets | Tradenames
Intangible Assets by Major Class [Line Items]
Gross carrying amount	1,292	1,293
Net carrying amount	1,292	1,293
Indefinite-lived Intangible Assets | Customer relationships
Intangible Assets by Major Class [Line Items]
Gross carrying amount	1,289	1,292
Net carrying amount	$ 1,289	$ 1,292

Goodwill and intangible asset_5

Goodwill and intangible assets - Estimated Annual Amortization Expense (Details) $ in Millions	Sep. 30, 2020USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2020	$ 104
2021	81
2022	63
2023	52
2024	$ 45

Goodwill and intangible asset_6

Goodwill and intangible assets - Narrative (Details)	3 Months Ended	9 Months Ended
	Jun. 30, 2020USD ($)	Sep. 30, 2020Segmentreporting_unit
Goodwill [Line Items]
Number of operating segments (segment) | Segment		3
Number of reporting units (reporting unit)		6
Goodwill impairment | $	$ 0
Investment Services
Goodwill [Line Items]
Number of reporting units (reporting unit)		4
Investment and Wealth Management
Goodwill [Line Items]
Number of reporting units (reporting unit)		2

Other assets - Components of Ot

Other assets - Components of Other Assets (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Other Assets [Abstract]
Corporate/bank-owned life insurance	$ 5,276	$ 5,219
Accounts receivable	3,549	3,802
Fails to deliver	2,192	1,671
Software	1,832	1,590
Prepaid pension assets	1,599	1,464
Equity in a joint venture and other investments	1,190	1,102
Renewable energy investments	1,057	1,144
Qualified affordable housing project investments	997	1,024
Prepaid expense	522	491
Federal Reserve Bank stock	478	466
Income taxes receivable	332	388
Seed capital	200	184
Fair value of hedging derivatives	56	21
Other	1,499	1,655
Total other assets	20,779	20,221
Federal Home Loan Bank stock, at cost	$ 8	$ 22

Other assets - Non-Readily Mark

Other assets - Non-Readily Marketable Equity Securities (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Other Assets [Abstract]
Equity securities without readily determinable fair value, amount	$ 112			$ 112		$ 61
Equity securities without readily determinable fair value, upward price adjustment, annual amount	4	$ 2	$ 1	10	$ 3
Equity securities without readily determinable fair value, downward price adjustment, annual amount	0	0	0	0	(1)
Equity securities without readily determinable fair value, net adjustment, annual amount	4	$ 2	$ 1	10	$ 2
Equity securities without readily determinable fair value, upward price adjustment, cumulative amount amount	42			42
Equity securities without readily determinable fair value, downward price adjustment, cumulative amount	(4)			(4)
Equity securities without readily determinable fair value, net price adjustment, cumulative amount	$ 38			$ 38

Other assets - Qualified Afford

Other assets - Qualified Affordable Housing Project Investments (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Other Assets [Abstract]
Qualified affordable housing project investments	$ 997			$ 997		$ 1,024
Qualified affordable housing project investments, commitment	388			388		$ 422
Qualified affordable housing project commitment - 2020	40			40
Qualified affordable housing project commitment - 2021	187			187
Qualified affordable housing project commitment - 2022	99			99
Qualified affordable housing project commitment - 2023	36			36
Qualified affordable housing project commitment - 2024	1			1
Qualified affordable housing project commitment - 2025 and thereafter	25			25
Tax credits and other tax benefits	35	$ 38	$ 39	111	$ 117
Amortization expense included in the provision for income taxes	$ 30	$ 31	$ 33	$ 92	$ 97

Other assets - Seed Capital and

Other assets - Seed Capital and Private Equity Investments (Details) - Other Assets - NAV - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Line Items]
Fair value	$ 184	$ 181
Unfunded  commitments	66	55
Seed capital
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Line Items]
Fair value	44	59
Unfunded  commitments	11	$ 0
Fair value, investments, entities that calculate net asset value per share, liquidating investment, remaining period		6 years
Private equitiy investments (SBICs)
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Line Items]
Fair value	97	$ 89
Unfunded  commitments	$ 55	55
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	$ 43	33
Unfunded  commitments	$ 0	$ 0
Minimum | Seed capital
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Line Items]
Fair value, investments, entities that calculate net asset value per share, liquidating investment, remaining period	6 years
Maximum | Seed capital
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Line Items]
Fair value, investments, entities that calculate net asset value per share, liquidating investment, remaining period	11 years
Maximum | Other
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Line Items]
Redemption notice period	95 days	95 days

Contract revenue - Disaggregati

Contract revenue - Disaggregation of Contract Revenues (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Total fee and other revenue	$ 3,117	$ 3,176	$ 3,128	$ 9,625	$ 9,272
Income from consolidated investment management funds, net of noncontrolling interests	937	950	1,038	2,867	3,001
Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	2,905	2,876	2,902	8,746	8,538
Fee and other revenue - not in scope of ASC 606	232	339	226	918	756
Total fee and other revenue	3,137	3,215	3,128	9,664	9,294
Asset servicing fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	1,155	1,157	1,121	3,451	3,323
Clearing services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	397	431	419	1,298	1,227
Issuer services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	296	277	324	836	866
Treasury services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	152	145	140	446	413
Total investment services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	2,000	2,010	2,004	6,031	5,829
Investment management and performance fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	839	791	829	2,493	2,503
Financing-related fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	15	24	14	67	48
Distribution and servicing | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	29	27	33	87	95
Investment and other income | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	22	24	22	68	63
Investment Services | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	2,061	2,081	2,067	6,244	6,018
Fee and other revenue - not in scope of ASC 606	185	258	229	777	672
Total fee and other revenue	2,246	2,339	2,296	7,021	6,690
Investment Services | Asset servicing fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	1,143	1,147	1,106	3,417	3,282
Investment Services | Clearing services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	397	431	419	1,298	1,228
Investment Services | Issuer services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	296	277	324	836	866
Investment Services | Treasury services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	153	144	140	446	412
Investment Services | Total investment services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	1,989	1,999	1,989	5,997	5,788
Investment Services | Investment management and performance fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	4	4	4	13	12
Investment Services | Financing-related fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	13	23	14	64	47
Investment Services | Distribution and servicing | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	(2)	(7)	(12)	(21)	(39)
Investment Services | Investment and other income | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	57	62	72	191	210
Investment and Wealth Management | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	863	811	844	2,552	2,551
Fee and other revenue - not in scope of ASC 606	8	27	(6)	3	10
Total fee and other revenue	871	838	838	2,555	2,561
Income from consolidated investment management funds, net of noncontrolling interests	20	39	0	39	22
Investment and Wealth Management | Asset servicing fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	25	25	20	73	60
Investment and Wealth Management | Clearing services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	0	0	0	0	0
Investment and Wealth Management | Issuer services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	0	0	0	0	0
Investment and Wealth Management | Treasury services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	1	0	0	1	1
Investment and Wealth Management | Total investment services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	26	25	20	74	61
Investment and Wealth Management | Investment management and performance fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	838	792	829	2,492	2,503
Investment and Wealth Management | Financing-related fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	1	1	0	2	0
Investment and Wealth Management | Distribution and servicing | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	31	34	45	108	134
Investment and Wealth Management | Investment and other income | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	(33)	(41)	(50)	(124)	(147)
Other | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	(19)	(16)	(9)	(50)	(31)
Fee and other revenue - not in scope of ASC 606	39	54	3	138	74
Total fee and other revenue	20	38	(6)	88	43
Other | Asset servicing fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	(13)	(15)	(5)	(39)	(19)
Other | Clearing services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	0	0	0	0	(1)
Other | Issuer services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	0	0	0	0	0
Other | Treasury services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	(2)	1	0	(1)	0
Other | Total investment services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	(15)	(14)	(5)	(40)	(20)
Other | Investment management and performance fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	(3)	(5)	(4)	(12)	(12)
Other | Financing-related fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	1	0	0	1	1
Other | Distribution and servicing | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	0	0	0	0	0
Other | Investment and other income | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	$ (2)	$ 3	$ 0	$ 1	$ 0

Contract revenue - Narrative (D

Contract revenue - Narrative (Details) - USD ($)	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Capitalized Contract Cost [Line Items]
Contract with customer, asset	$ 2,500,000,000			$ 2,500,000,000		$ 2,400,000,000
Contract assets representing accrued revenues not yet billed	57,000,000			57,000,000		32,000,000
Contract with customer, liability	187,000,000			187,000,000		168,000,000
Contract with customer, liability, revenue recognized	65,000,000			95,000,000
Capitalized contract cost, impairment				0
Incremental costs for obtaining contracts
Capitalized Contract Cost [Line Items]
Capitalized contract costs	$ 77,000,000			$ 77,000,000		86,000,000
Capitalized contract cost, amortization period	9 years			9 years
Capitalized contract cost, amortization	$ 6,000,000	$ 5,000,000	$ 7,000,000	$ 16,000,000	$ 17,000,000
Costs to fulfill contract
Capitalized Contract Cost [Line Items]
Capitalized contract costs	12,000,000			12,000,000		$ 16,000,000
Capitalized contract cost, amortization	$ 1,000,000	$ 2,000,000	$ 1,000,000	$ 4,000,000	$ 4,000,000
Costs to fulfill contract | Minimum
Capitalized Contract Cost [Line Items]
Capitalized contract cost, amortization period	7 years			7 years
Costs to fulfill contract | Maximum
Capitalized Contract Cost [Line Items]
Capitalized contract cost, amortization period	9 years			9 years

Net interest revenue (Details)

Net interest revenue (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020		Sep. 30, 2019
Interest revenue
Deposits with the Federal Reserve and other central banks	$ (10)	$ (7)	$ 102	$ 63		$ 354
Deposits with banks	20	40	73	118		200
Federal funds sold and securities purchased under resale agreements	48	61	660	505		1,702
Margin loans	41	40	104	168		358
Non-margin loans	199	230	287	738		1,007
Securities:
Taxable	499	556	669	1,649		2,062
Exempt from federal income taxes	7	6	7	19		29
Total securities	506	562	676	1,668		2,091
Trading securities	16	17	40	73		115
Total interest revenue	820	943	1,942	3,333		5,827
Interest expense
Deposits	(29)	(17)	437	194		1,260
Federal funds purchased and securities sold under repurchase agreements	6	1	443	282		1,146
Trading liabilities	2	2	8	11		26
Other borrowed funds	3	7	10	14		54
Commercial paper	0	1	22	7		48
Customer payables	0	(1)	59	29		198
Long-term debt	135	170	233	499		722
Total interest expense	117	163	1,212	1,036		3,454
Net interest revenue	703	780	730	2,297		2,373
Provision for credit losses	9	143	(16)	321	[1]	(17)	[1]
Net interest revenue after provision for credit losses	$ 694	$ 637	746	$ 1,976		2,390
Operating lease, impairment loss			$ 70			$ 70
[1]	In the first quarter of 2020, we adopted new accounting guidance included in ASU 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments, on a prospective basis. See Note 2 of the Notes to Consolidated Financial Statements for additional information.

Employee benefit plans - Combin

Employee benefit plans - Combined Data for Defined Benefit Pension and Post Retirement Healthcare Plans (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Pension Benefits | Domestic
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0	$ 0	$ 0	$ 0
Interest cost	39	39	44	117	133
Expected return on assets	(80)	(79)	(84)	(239)	(252)
Other	22	21	13	65	39
Net periodic benefit (credit) cost	(19)	(19)	(27)	(57)	(80)
Pension Benefits | Foreign
Defined Benefit Plan Disclosure [Line Items]
Service cost	3	3	3	9	9
Interest cost	7	6	8	20	24
Expected return on assets	(10)	(9)	(11)	(29)	(34)
Other	2	3	0	8	1
Net periodic benefit (credit) cost	2	3	0	8	0
Healthcare Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0	0	0
Interest cost	2	1	2	4	5
Expected return on assets	(2)	(2)	(1)	(5)	(5)
Other	(1)	0	(1)	(2)	(2)
Net periodic benefit (credit) cost	$ (1)	$ (1)	$ 0	$ (3)	$ (2)

Income taxes - Narrative (Detai

Income taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 213	$ 216	$ 246	$ 694	$ 747
Effective tax rate	18.40%	18.30%	19.10%
Tax reserves	$ 85			85		$ 173
Impact on effective tax rate if tax reserves were unnecessary	85			85
Accrued interest, related to income taxes in the balance sheet	23			23
Additional tax expense related to interest				5	$ 9
Reasonably possible decrease in uncertain tax positions within the next 12 months, if a re-evaluation is required	$ 15			$ 15

Variable interest entities an_3

Variable interest entities and securitization - Assets and Liabilities of VIEs (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Variable Interest Entity [Line Items]
Nonredeemable noncontrolling interests	$ 251	$ 102
VME classification of carrying amount, assets	226	50
VME classification of carrying amount, liabilities	1	1
Noncontrolling interest in VME	31	1
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Trading assets	979	629
Other assets	9	16
Total assets	988	645
Other liabilities	404	388
Total liabilities	404	388
Nonredeemable noncontrolling interests	251	102
Variable Interest Entity, Primary Beneficiary | Investment Management funds
Variable Interest Entity [Line Items]
Trading assets	579	229
Other assets	9	16
Total assets	588	245
Other liabilities	4	1
Total liabilities	4	1
Nonredeemable noncontrolling interests	251	102
Variable Interest Entity, Primary Beneficiary | Securitization
Variable Interest Entity [Line Items]
Trading assets	400	400
Other assets	0	0
Total assets	400	400
Other liabilities	400	387
Total liabilities	400	387
Nonredeemable noncontrolling interests	$ 0	$ 0

Variable interest entities an_4

Variable interest entities and securitization - Non-consolidated VIEs (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Variable Interest Entity [Line Items]
Assets	$ 428,398	$ 381,508
Liabilities	383,051	339,780
Variable Interest Entity, Not Primary Beneficiary | Securities available-for-sale
Variable Interest Entity [Line Items]
Assets	206	208
Liabilities	0	0
Maximum loss exposure	206	208
Variable Interest Entity, Not Primary Beneficiary | Other
Variable Interest Entity [Line Items]
Assets	2,278	2,400
Liabilities	388	422
Maximum loss exposure	$ 2,675	$ 2,822

Preferred stock - Narrative (De

Preferred stock - Narrative (Details) - $ / shares	9 Months Ended
	Sep. 30, 2020	May 31, 2020	Dec. 31, 2019
Class of Stock [Line Items]
Preferred stock, shares authorized (shares)	100,000,000		100,000,000
Preferred stock, par value (usd per share)	$ 0.01		$ 0.01
Series G Noncumulative Perpetual Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares authorized (shares)		1,000,000
Per annum dividend rate	4.70%
LIBOR | Series G Noncumulative Perpetual Preferred Stock
Class of Stock [Line Items]
Preferred stock, basis spread on variable rate	4.358%

Preferred stock - Summary (Deta

Preferred stock - Summary (Details) - USD ($) $ / shares in Units, $ in Millions	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Class of Stock [Line Items]
Total shares issued and outstanding (shares)	45,826	35,826
Carrying value	$ 4,532	$ 3,542
Series A Noncumulative Perpetual Preferred Stock
Class of Stock [Line Items]
Per annum dividend rate description	Greater of (i) three-month LIBOR plus 0.565% for the related distribution period; or (ii) 4.000%
Per annum dividend rate	4.00%
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 | LIBOR
Class of Stock [Line Items]
Preferred stock, basis spread on variable rate	0.565%
Series C Noncumulative Perpetual Preferred Stock
Class of Stock [Line Items]
Per annum dividend rate	5.20%
Total shares issued and outstanding (shares)	5,825	5,825
Carrying value	$ 568	$ 568
Liquidation preference per share (usd per share)	$ 100,000
Series D Noncumulative Perpetual Preferred Stock
Class of Stock [Line Items]
Per annum dividend rate description	4.50% to but excluding June 20, 2023, then a floating rate equal to the three-month LIBOR plus 2.46%
Per annum dividend rate	4.50%
Total shares issued and outstanding (shares)	5,000	5,000
Carrying value	$ 494	$ 494
Liquidation preference per share (usd per share)	$ 100,000
Series D Noncumulative Perpetual Preferred Stock | LIBOR
Class of Stock [Line Items]
Preferred stock, basis spread on variable rate	2.46%
Series E Noncumulative Perpetual Preferred Stock
Class of Stock [Line Items]
Per annum dividend rate description	4.95% to but excluding June 20, 2020, then a floating rate equal to the three-month LIBOR plus 3.42%
Per annum dividend rate	4.95%
Total shares issued and outstanding (shares)	10,000	10,000
Carrying value	$ 990	$ 990
Liquidation preference per share (usd per share)	$ 100,000
Series E Noncumulative Perpetual Preferred Stock | LIBOR
Class of Stock [Line Items]
Preferred stock, basis spread on variable rate	3.42%
Series F Noncumulative Perpetual Preferred Stock
Class of Stock [Line Items]
Per annum dividend rate description	4.625% to but excluding Sept. 20, 2026, then a floating rate equal to the three-month LIBOR plus 3.131%
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 | LIBOR
Class of Stock [Line Items]
Preferred stock, basis spread on variable rate	3.131%
Series G Noncumulative Perpetual Preferred Stock
Class of Stock [Line Items]
Per annum dividend rate description	4.70% to but excluding Sept. 20, 2025, then a floating rate equal to the five-year treasury rate plus 4.358%
Per annum dividend rate	4.70%
Total shares issued and outstanding (shares)	10,000	0
Carrying value	$ 990	$ 0
Liquidation preference per share (usd per share)	$ 100,000
Series G Noncumulative Perpetual Preferred Stock | LIBOR
Class of Stock [Line Items]
Preferred stock, basis spread on variable rate	4.358%

Preferred stock - Summary of Pr

Preferred stock - Summary of Preferred Dividends Paid (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Class of Stock [Line Items]
Preferred dividends paid	$ 61	$ 49	$ 36	$ 146	$ 120
Series A Preferred Stock
Class of Stock [Line Items]
Depositary shares per share	1.00%			1.00%
Dividend paid per share (usd per share)	$ 1,011.11	$ 1,022.22	$ 1,022.22	$ 3,044.44	$ 3,044.44
Preferred dividends paid	$ 5	$ 5	$ 5	$ 15	$ 15
Series C Preferred Stock
Class of Stock [Line Items]
Depositary shares per share	0.03%			0.03%
Dividend paid per share (usd per share)	$ 1,300	$ 1,300	$ 1,300	$ 3,900	$ 3,900
Preferred dividends paid	$ 7	$ 8	$ 8	$ 23	$ 23
Series D Preferred Stock
Class of Stock [Line Items]
Depositary shares per share	1.00%			1.00%
Dividend paid per share (usd per share)		$ 2,250		$ 2,250	$ 2,250
Preferred dividends paid	$ 0	$ 11	0	$ 11	$ 11
Series E Preferred Stock
Class of Stock [Line Items]
Depositary shares per share	1.00%			1.00%
Dividend paid per share (usd per share)	$ 962.65	$ 2,475		$ 3,437.65	$ 2,475
Preferred dividends paid	$ 10	$ 25	$ 0	$ 35	$ 25
Series F Preferred Stock
Class of Stock [Line Items]
Depositary shares per share	1.00%			1.00%
Dividend paid per share (usd per share)	$ 2,312.50		$ 2,312.50	$ 4,625	$ 4,625
Preferred dividends paid	$ 23	0	$ 23	$ 46	$ 46
Series G Noncumulative Perpetual Preferred Stock
Class of Stock [Line Items]
Depositary shares per share	1.00%			1.00%
Dividend paid per share (usd per share)	$ 1,579.72			$ 1,579.72
Preferred dividends paid	$ 16	$ 0	$ 0	$ 16	$ 0

Other comprehensive income (l_3

Other comprehensive income (loss) - Components (Details) - USD ($) $ in Millions		3 Months Ended			9 Months Ended
		Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Pre-tax amount
Total other comprehensive income (loss), Pre-tax amount		$ 583	$ 1,114	$ (121)	$ 1,676	$ 656
Tax (expense) benefit
Total other comprehensive income (loss), Tax (expense) benefit		3	(230)	(87)	(392)	(289)
After-tax amount
Total other comprehensive income (loss), net of tax	[1]	586	884	(208)	1,284	367
Foreign currency translation
Pre-tax amount
Other comprehensive income (loss), Pre-tax amount		262	104	(213)	101	(157)
Total other comprehensive income (loss), Pre-tax amount		262	104	(213)	101	(157)
Tax (expense) benefit
Other comprehensive income (loss), Tax (expense) benefit		69	11	(63)	(24)	(80)
Total other comprehensive income (loss), Tax (expense) benefit		69	11	(63)	(24)	(80)
After-tax amount
Other comprehensive income (loss), After-tax amount		331	115	(276)	77	(237)
Total other comprehensive income (loss), net of tax		331	115	(276)	77	(237)
Unrealized gain (loss) on assets available-for-sale
Pre-tax amount
Other comprehensive income (loss), Pre-tax amount		297	989	88	1,529	794
Reclassification adjustment, Pre-tax amount		(9)	(9)	1	(27)	(7)
Total other comprehensive income (loss), Pre-tax amount		288	980	89	1,502	787
Tax (expense) benefit
Other comprehensive income (loss), Tax (expense) benefit		(64)	(236)	(25)	(360)	(205)
Reclassification adjustment, Tax (expense) benefit		3	2	0	7	2
Total other comprehensive income (loss), Tax (expense) benefit		(61)	(234)	(25)	(353)	(203)
After-tax amount
Other comprehensive income (loss), After-tax amount		233	753	63	1,169	589
Reclassification adjustment, After-tax amount		(6)	(7)	1	(20)	(5)
Total other comprehensive income (loss), net of tax		227	746	64	1,149	584
Defined benefit plans
Pre-tax amount
Other comprehensive income (loss), Pre-tax amount					0	(11)
Reclassification adjustment, Pre-tax amount		24	24	13	72	38
Total other comprehensive income (loss), Pre-tax amount		24	24	13	72	27
Tax (expense) benefit
Other comprehensive income (loss), Tax (expense) benefit					0	2
Reclassification adjustment, Tax (expense) benefit		(4)	(5)	(3)	(15)	(8)
Total other comprehensive income (loss), Tax (expense) benefit		(4)	(5)	(3)	(15)	(6)
After-tax amount
Other comprehensive income (loss), After-tax amount					0	(9)
Reclassification adjustment, After-tax amount		20	19	10	57	30
Total other comprehensive income (loss), net of tax		20	19	10	57	21
Unrealized gain (loss) on cash flow hedges
Pre-tax amount
Other comprehensive income (loss), Pre-tax amount		9	3	(9)	(1)	(1)
Reclassification adjustment, Pre-tax amount		0	3	(1)	2	0
Total other comprehensive income (loss), Pre-tax amount		9	6	(10)	1	(1)
Tax (expense) benefit
Other comprehensive income (loss), Tax (expense) benefit		(1)	(1)	4	1	(2)
Reclassification adjustment, Tax (expense) benefit		0	(1)	0	(1)	2
Total other comprehensive income (loss), Tax (expense) benefit		(1)	(2)	4	0	0
After-tax amount
Other comprehensive income (loss), After-tax amount		8	2	(5)	0	(3)
Reclassification adjustment, After-tax amount		0	2	(1)	1	2
Total other comprehensive income (loss), net of tax		8	4	(6)	1	(1)
Unrealized gain (loss) on cash flow hedges | Interest expense
Pre-tax amount
Reclassification adjustment, Pre-tax amount		0	0	1	0	1
Tax (expense) benefit
Reclassification adjustment, Tax (expense) benefit		0	0	0	0	0
After-tax amount
Reclassification adjustment, After-tax amount		0	0	1	0	1
Unrealized gain (loss) on cash flow hedges | Staff expense
Pre-tax amount
Reclassification adjustment, Pre-tax amount		0	3	(2)	2	(1)
Tax (expense) benefit
Reclassification adjustment, Tax (expense) benefit		0	(1)	0	(1)	2
After-tax amount
Reclassification adjustment, After-tax amount		$ 0	$ 2	$ (2)	$ 1	$ 1
[1]	Other comprehensive income (loss) attributable to The Bank of New York Mellon Corporation shareholders was $584 million for the quarter ended Sept. 30, 2020, $884 million for the quarter ended June 30, 2020, $(205) million for the quarter ended Sept. 30, 2019, $1,284 million for the nine months ended Sept. 30, 2020 and $368 million for the nine months ended Sept. 30, 2019.

Fair value measurement - Assets

Fair value measurement - Assets and Liabilities on Recurring Basis (Details) - USD ($) $ in Millions		Sep. 30, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		$ 109,243	$ 88,550
Trading assets:
Total derivatives fair value		9,443	9,061
Effect of master netting agreements		(5,238)	(5,819)
Total derivative assets		4,205	3,242
Trading liabilities:
Total derivatives fair value		9,776	9,206
Effect of master netting agreements		(6,183)	(5,415)
Derivative liabilities		3,593	3,791
Long-term debt		400	387
Investment management funds
Trading assets:
Trading assets		579	229
Other assets		9	16
Total assets		588	245
Trading liabilities:
Total liabilities		4	1
Interest rate contracts
Trading assets:
Effect of master netting agreements		(2,133)	(1,792)
Trading liabilities:
Effect of master netting agreements		(2,551)	(1,986)
Foreign exchange contracts
Trading assets:
Effect of master netting agreements		(3,102)	(4,021)
Trading liabilities:
Effect of master netting agreements		(3,631)	(3,428)
Equity contracts
Trading assets:
Effect of master netting agreements		(3)	(6)
Trading liabilities:
Effect of master netting agreements		(1)	(1)
Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		24,733	27,043
U.S. Treasury
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		24,733	15,431
Sovereign debt/sovereign guaranteed
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		14,093	12,646
Agency commercial mortgage-backed securities (“MBS”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		9,942	9,417
Supranational
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		7,136	3,709
Foreign covered bonds
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		5,841	4,197
Collateralized loan obligations (“CLOs”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		4,657	4,063
U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		3,478	1,949
Other ABS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		2,930	2,143
Commercial paper/certificates of deposit (“CDs”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		357
Non-agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		1,941	1,233
State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		1,690	1,044
Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		1,030	853
Other debt securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		1	1
Not designated as hedging
Trading assets:
Total derivatives fair value		9,387	9,040
Trading liabilities:
Total derivatives fair value		8,779	8,599
Not designated as hedging | Interest rate contracts
Trading assets:
Total derivatives fair value		4,962	3,690
Trading liabilities:
Total derivatives fair value		4,246	3,250
Not designated as hedging | Foreign exchange contracts
Trading assets:
Total derivatives fair value		4,410	5,331
Trading liabilities:
Total derivatives fair value		4,522	5,340
Not designated as hedging | Equity contracts
Trading assets:
Total derivatives fair value		15	19
Trading liabilities:
Total derivatives fair value		8	5
Designated as hedging
Trading assets:
Total derivatives fair value		56	21
Trading liabilities:
Total derivatives fair value		997	607
Designated as hedging | Interest rate contracts
Trading assets:
Total derivatives fair value		0	0
Trading liabilities:
Total derivatives fair value		803	350
Designated as hedging | Foreign exchange contracts
Trading assets:
Total derivatives fair value		56	21
Trading liabilities:
Total derivatives fair value		194	257
Operating segments
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale	[1]	109,243	88,550
Trading assets:
Trading assets		13,074	13,571
Other assets		527	419
Trading liabilities:
Long-term debt		400	387
Operating segments | Investment management funds
Trading assets:
Total assets		588	245
Trading liabilities:
Total liabilities		4	1
Assets measured at fair value on a recurring basis
Trading assets:
Effect of master netting agreements		(5,238)	(5,819)
Total assets		123,432	102,785
Trading liabilities:
Effect of master netting agreements		(6,183)	(5,415)
Total liabilities		7,485	5,836
Assets measured at fair value on a recurring basis | Level 1
Trading assets:
Total assets		$ 38,268	$ 29,576
Percentage of total assets prior to netting		30.00%	27.00%
Trading liabilities:
Total liabilities		$ 3,425	$ 1,560
Percentage of total liabilities prior to netting		25.00%	14.00%
Assets measured at fair value on a recurring basis | Level 2
Trading assets:
Total assets		$ 90,218	$ 78,847
Percentage of total assets prior to netting		70.00%	73.00%
Trading liabilities:
Total liabilities		$ 10,243	$ 9,691
Percentage of total liabilities prior to netting		75.00%	86.00%
Assets measured at fair value on a recurring basis | Level 2 | Grantor Trust
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		$ 512	$ 640
Assets measured at fair value on a recurring basis | Level 3
Trading assets:
Total assets		$ 0	$ 0
Percentage of total assets prior to netting		0.00%	0.00%
Trading liabilities:
Total liabilities		$ 0	$ 0
Percentage of total liabilities prior to netting		0.00%	0.00%
Assets measured at fair value on a recurring basis | Operating segments
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		$ 109,243	$ 88,550
Trading assets:
Debt instruments		6,231	5,811
Equity instruments		2,694	4,539
Effect of master netting agreements		(5,238)	(5,819)
Trading assets		13,074	13,571
Other assets		287	217
Total assets		122,844	102,540
Trading liabilities:
Total trading liabilities		6,084	4,841
Effect of master netting agreements		(6,183)	(5,415)
Long-term debt		400	387
Total other liabilities – derivative liabilities designated as hedging		997
Total liabilities		7,481	5,835
Assets measured at fair value on a recurring basis | Operating segments | Investment management funds
Trading assets:
Total assets		588	245
Trading liabilities:
Total liabilities		4	1
Assets measured at fair value on a recurring basis | Operating segments | Interest rate contracts
Trading assets:
Effect of master netting agreements		(2,133)	(1,792)
Trading liabilities:
Effect of master netting agreements		(2,551)	(1,986)
Assets measured at fair value on a recurring basis | Operating segments | Foreign exchange contracts
Trading assets:
Effect of master netting agreements		(3,102)	(4,021)
Trading liabilities:
Effect of master netting agreements		(3,631)	(3,428)
Assets measured at fair value on a recurring basis | Operating segments | Equity contracts
Trading assets:
Effect of master netting agreements		(3)	(6)
Trading liabilities:
Effect of master netting agreements		(1)	(1)
Assets measured at fair value on a recurring basis | Operating segments | Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		24,733	27,043
Assets measured at fair value on a recurring basis | Operating segments | U.S. Treasury
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		24,733	15,431
Assets measured at fair value on a recurring basis | Operating segments | Sovereign debt/sovereign guaranteed
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		14,093	12,646
Assets 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]
Available-for-sale		9,942	9,417
Assets measured at fair value on a recurring basis | Operating segments | Supranational
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		7,136	3,709
Assets measured at fair value on a recurring basis | Operating segments | Foreign covered bonds
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		5,841	4,197
Assets 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]
Available-for-sale		4,657	4,063
Assets measured at fair value on a recurring basis | Operating segments | Foreign government agencies
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		3,970	2,643
Assets 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]
Available-for-sale		3,478	1,949
Assets measured at fair value on a recurring basis | Operating segments | Other ABS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		2,930	2,143
Assets 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]
Available-for-sale		2,711	2,178
Assets measured at fair value on a recurring basis | Operating segments | Commercial paper/certificates of deposit (“CDs”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		357
Assets measured at fair value on a recurring basis | Operating segments | Non-agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		1,941	1,233
Assets measured at fair value on a recurring basis | Operating segments | State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		1,690	1,044
Assets measured at fair value on a recurring basis | Operating segments | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		1,030	853
Assets measured at fair value on a recurring basis | Operating segments | Other debt securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		1	1
Assets measured at fair value on a recurring basis | Operating segments | Not designated as hedging
Trading assets:
Total derivative assets		4,149	3,221
Trading liabilities:
Effect of master netting agreements		(6,183)
Derivative liabilities		2,596	3,184
Assets measured at fair value on a recurring basis | Operating segments | Not designated as hedging | Interest rate contracts
Trading assets:
Total derivative assets		2,829	1,898
Trading liabilities:
Derivative liabilities		1,695	1,264
Assets measured at fair value on a recurring basis | Operating segments | Not designated as hedging | Foreign exchange contracts
Trading assets:
Total derivative assets		1,308	1,310
Trading liabilities:
Derivative liabilities		891	1,912
Assets measured at fair value on a recurring basis | Operating segments | Not designated as hedging | Equity contracts
Trading assets:
Total derivative assets		12	13
Trading liabilities:
Derivative liabilities		10	8
Assets measured at fair value on a recurring basis | Operating segments | Designated as hedging
Trading assets:
Total derivative assets		56	21
Trading liabilities:
Total other liabilities – derivative liabilities designated as hedging			607
Assets measured at fair value on a recurring basis | Operating segments | Designated as hedging | Interest rate contracts
Trading liabilities:
Derivative liabilities		803	350
Assets measured at fair value on a recurring basis | Operating segments | Designated as hedging | Foreign exchange contracts
Trading assets:
Total derivative assets		56	21
Trading liabilities:
Derivative liabilities		194	257
Assets measured at fair value on a recurring basis | Operating segments | Debt instruments
Trading liabilities:
Total trading liabilities		3,462	1,584
Assets measured at fair value on a recurring basis | Operating segments | Equity instruments
Trading liabilities:
Total trading liabilities		26	73
Assets measured at fair value on a recurring basis | Operating segments | Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		31,912	23,215
Trading assets:
Debt instruments		3,181	1,568
Equity instruments		2,694	4,539
Trading assets		5,883	6,111
Other assets		113	38
Total assets		$ 37,908	$ 29,364
Percentage of total assets prior to netting		30.00%	27.00%
Trading liabilities:
Total trading liabilities		$ 3,425	$ 1,559
Long-term debt		0	0
Total other liabilities – derivative liabilities designated as hedging		0
Total liabilities		$ 3,425	$ 1,559
Percentage of total liabilities prior to netting		25.00%	14.00%
Assets measured at fair value on a recurring basis | Operating segments | Level 1 | Investment management funds
Trading assets:
Total assets		$ 360	$ 212
Trading liabilities:
Total liabilities		0	1
Assets measured at fair value on a recurring basis | Operating segments | Level 1 | Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		0	0
Assets 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]
Available-for-sale		24,733	15,431
Assets measured at fair value on a recurring basis | Operating segments | Level 1 | Sovereign debt/sovereign guaranteed
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		7,179	7,784
Assets 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]
Available-for-sale		0	0
Assets measured at fair value on a recurring basis | Operating segments | Level 1 | Supranational
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		0	0
Assets 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]
Available-for-sale		0	0
Assets 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]
Available-for-sale		0	0
Assets measured at fair value on a recurring basis | Operating segments | Level 1 | Foreign government agencies
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		0	0
Assets 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]
Available-for-sale		0	0
Assets measured at fair value on a recurring basis | Operating segments | Level 1 | Other ABS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		0	0
Assets 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]
Available-for-sale		0	0
Assets measured at fair value on a recurring basis | Operating segments | Level 1 | Commercial paper/certificates of deposit (“CDs”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		0
Assets 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]
Available-for-sale		0	0
Assets measured at fair value on a recurring basis | Operating segments | Level 1 | State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		0	0
Assets measured at fair value on a recurring basis | Operating segments | Level 1 | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		0	0
Assets 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]
Available-for-sale		0	0
Assets measured at fair value on a recurring basis | Operating segments | Level 1 | Not designated as hedging
Trading assets:
Total derivatives fair value		8	4
Trading liabilities:
Total derivatives fair value		3	9
Assets 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		4	4
Trading liabilities:
Total derivatives fair value		3	6
Assets 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
Assets measured at fair value on a recurring basis | Operating segments | Level 1 | Not designated as hedging | Equity contracts
Trading assets:
Total derivatives fair value		4	0
Trading liabilities:
Total derivatives fair value		0	3
Assets 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 other liabilities – derivative liabilities designated as hedging			0
Assets measured at fair value on a recurring basis | Operating segments | Level 1 | Designated as hedging | Interest rate contracts
Trading liabilities:
Total derivatives fair value		0	0
Assets 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
Assets measured at fair value on a recurring basis | Operating segments | Level 1 | Debt instruments
Trading liabilities:
Total trading liabilities		3,396	1,477
Assets measured at fair value on a recurring basis | Operating segments | Level 1 | Equity instruments
Trading liabilities:
Total trading liabilities		26	73
Assets measured at fair value on a recurring basis | Operating segments | Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		77,331	65,335
Trading assets:
Debt instruments		3,050	4,243
Equity instruments		0	0
Trading assets		12,429	13,279
Other assets		174	179
Total assets		$ 89,990	$ 78,814
Percentage of total assets prior to netting		70.00%	73.00%
Trading liabilities:
Total trading liabilities		$ 8,842	$ 8,697
Long-term debt		400	387
Total other liabilities – derivative liabilities designated as hedging		997
Total liabilities		$ 10,239	$ 9,691
Percentage of total liabilities prior to netting		75.00%	86.00%
Assets measured at fair value on a recurring basis | Operating segments | Level 2 | Investment management funds
Trading assets:
Total assets		$ 228	$ 33
Trading liabilities:
Total liabilities		4	0
Assets measured at fair value on a recurring basis | Operating segments | Level 2 | Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		24,733	27,043
Assets 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]
Available-for-sale		0	0
Assets measured at fair value on a recurring basis | Operating segments | Level 2 | Sovereign debt/sovereign guaranteed
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		6,914	4,862
Assets 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]
Available-for-sale		9,942	9,417
Assets measured at fair value on a recurring basis | Operating segments | Level 2 | Supranational
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		7,136	3,709
Assets 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]
Available-for-sale		5,841	4,197
Assets 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]
Available-for-sale		4,657	4,063
Assets measured at fair value on a recurring basis | Operating segments | Level 2 | Foreign government agencies
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		3,970	2,643
Assets 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]
Available-for-sale		3,478	1,949
Assets measured at fair value on a recurring basis | Operating segments | Level 2 | Other ABS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		2,930	2,143
Assets 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]
Available-for-sale		2,711	2,178
Assets measured at fair value on a recurring basis | Operating segments | Level 2 | Commercial paper/certificates of deposit (“CDs”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		357
Assets 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]
Available-for-sale		1,941	1,233
Assets measured at fair value on a recurring basis | Operating segments | Level 2 | State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		1,690	1,044
Assets measured at fair value on a recurring basis | Operating segments | Level 2 | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		1,030	853
Assets 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]
Available-for-sale		1	1
Assets measured at fair value on a recurring basis | Operating segments | Level 2 | Not designated as hedging
Trading assets:
Total derivatives fair value		9,379	9,036
Trading liabilities:
Total derivatives fair value		8,776	8,590
Assets 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		4,958	3,686
Trading liabilities:
Total derivatives fair value		4,243	3,244
Assets 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		4,410	5,331
Trading liabilities:
Total derivatives fair value		4,522	5,340
Assets measured at fair value on a recurring basis | Operating segments | Level 2 | Not designated as hedging | Equity contracts
Trading assets:
Total derivatives fair value		11	19
Trading liabilities:
Total derivatives fair value		11	6
Assets measured at fair value on a recurring basis | Operating segments | Level 2 | Designated as hedging
Trading assets:
Total derivatives fair value		56	21
Trading liabilities:
Total other liabilities – derivative liabilities designated as hedging			607
Assets measured at fair value on a recurring basis | Operating segments | Level 2 | Designated as hedging | Interest rate contracts
Trading liabilities:
Total derivatives fair value		803	350
Assets measured at fair value on a recurring basis | Operating segments | Level 2 | Designated as hedging | Foreign exchange contracts
Trading assets:
Total derivatives fair value		56	21
Trading liabilities:
Total derivatives fair value		194	257
Assets measured at fair value on a recurring basis | Operating segments | Level 2 | Debt instruments
Trading liabilities:
Total trading liabilities		66	107
Assets measured at fair value on a recurring basis | Operating segments | Level 2 | Equity instruments
Trading liabilities:
Total trading liabilities		0	0
Assets measured at fair value on a recurring basis | Operating segments | Level 3
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		0	0
Trading assets:
Debt instruments		0	0
Equity instruments		0	0
Trading assets		0	0
Other assets		0	0
Total assets		$ 0	$ 0
Percentage of total assets prior to netting		0.00%	0.00%
Trading liabilities:
Total trading liabilities		$ 0	$ 0
Long-term debt		0	0
Total other liabilities – derivative liabilities designated as hedging		0
Total liabilities		$ 0	$ 0
Percentage of total liabilities prior to netting		0.00%	0.00%
Assets measured at fair value on a recurring basis | Operating segments | Level 3 | Investment management funds
Trading assets:
Total assets		$ 0	$ 0
Trading liabilities:
Total liabilities		0	0
Assets measured at fair value on a recurring basis | Operating segments | Level 3 | Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		0	0
Assets 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]
Available-for-sale		0	0
Assets measured at fair value on a recurring basis | Operating segments | Level 3 | Sovereign debt/sovereign guaranteed
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		0	0
Assets 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]
Available-for-sale		0	0
Assets measured at fair value on a recurring basis | Operating segments | Level 3 | Supranational
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		0	0
Assets 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]
Available-for-sale		0	0
Assets 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]
Available-for-sale		0	0
Assets measured at fair value on a recurring basis | Operating segments | Level 3 | Foreign government agencies
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		0	0
Assets 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]
Available-for-sale		0	0
Assets measured at fair value on a recurring basis | Operating segments | Level 3 | Other ABS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		0	0
Assets 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]
Available-for-sale		0	0
Assets measured at fair value on a recurring basis | Operating segments | Level 3 | Commercial paper/certificates of deposit (“CDs”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		0
Assets 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]
Available-for-sale		0	0
Assets measured at fair value on a recurring basis | Operating segments | Level 3 | State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		0	0
Assets measured at fair value on a recurring basis | Operating segments | Level 3 | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		0	0
Assets 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]
Available-for-sale		0	0
Assets 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
Assets 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
Assets 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
Assets 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
Assets 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 other liabilities – derivative liabilities designated as hedging			0
Assets measured at fair value on a recurring basis | Operating segments | Level 3 | Designated as hedging | Interest rate contracts
Trading liabilities:
Total derivatives fair value		0	0
Assets 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
Assets measured at fair value on a recurring basis | Operating segments | Level 3 | Debt instruments
Trading liabilities:
Total trading liabilities		0	0
Assets measured at fair value on a recurring basis | Operating segments | Level 3 | Equity instruments
Trading liabilities:
Total trading liabilities		0	0
Assets measured at fair value on a recurring basis | Operating segments | NAV
Trading assets:
Assets measured at NAV		$ 184	$ 181
[1]	In the first quarter of 2020, we adopted new accounting guidance included in ASU 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments, on a prospective basis. See Note 2 of the Notes to Consolidated Financial Statements for additional information.

Fair value measurement - Certai

Fair value measurement - Certain Items on Recurring Basis (Details) - Assets measured at fair value on a recurring basis - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Non-agency RMBS | Origination in 2004 and Earlier, 2005, 2006 and 2007 through 2020
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 512	$ 640
Non-agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 1,941	$ 1,233
Non-agency RMBS | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	61.00%	25.00%
Non-agency RMBS | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	4.00%	9.00%
Non-agency RMBS | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	2.00%	3.00%
Non-agency RMBS | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	33.00%	63.00%
Non-agency RMBS | 2007-2020
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 1,311	$ 464
Non-agency RMBS | 2007-2020 | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	88.00%	55.00%
Non-agency RMBS | 2007-2020 | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	1.00%
Non-agency RMBS | 2007-2020 | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Non-agency RMBS | 2007-2020 | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	12.00%	44.00%
Non-agency RMBS | 2006
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 244	$ 291
Non-agency RMBS | 2006 | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Non-agency RMBS | 2006 | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	23.00%	21.00%
Non-agency RMBS | 2006 | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Non-agency RMBS | 2006 | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	77.00%	79.00%
Non-agency RMBS | 2005
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 243	$ 305
Non-agency RMBS | 2005 | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	4.00%	5.00%
Non-agency RMBS | 2005 | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	2.00%
Non-agency RMBS | 2005 | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	7.00%	8.00%
Non-agency RMBS | 2005 | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	89.00%	85.00%
Non-agency RMBS | 2004 and earlier
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 143	$ 173
Non-agency RMBS | 2004 and earlier | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	20.00%	22.00%
Non-agency RMBS | 2004 and earlier | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	9.00%	24.00%
Non-agency RMBS | 2004 and earlier | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	12.00%	4.00%
Non-agency RMBS | 2004 and earlier | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	59.00%	50.00%
Non-agency commercial MBS | 2009-2020 | Domestic
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 2,711	$ 2,178
Non-agency commercial MBS | 2009-2020 | AAA/ AA- | Domestic
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100.00%	98.00%
Non-agency commercial MBS | 2009-2020 | A/ A- | Domestic
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	2.00%
Non-agency commercial MBS | 2009-2020 | BBB/ BBB- | Domestic
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Non-agency commercial MBS | 2009-2020 | BB and lower | Domestic
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign covered bonds
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 5,841	$ 4,197
Foreign covered bonds | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	99.00%	100.00%
Foreign covered bonds | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	1.00%	0.00%
Foreign covered bonds | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign covered bonds | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign covered bonds | Canada
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 2,368	$ 1,798
Foreign covered bonds | Canada | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	98.00%	100.00%
Foreign covered bonds | Canada | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	2.00%	0.00%
Foreign covered bonds | Canada | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign covered bonds | Canada | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign covered bonds | UK
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 1,130	$ 984
Foreign covered bonds | UK | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100.00%	100.00%
Foreign covered bonds | UK | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign covered bonds | UK | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign covered bonds | UK | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign covered bonds | Australia
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 775	$ 431
Foreign covered bonds | Australia | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100.00%	100.00%
Foreign covered bonds | Australia | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign covered bonds | Australia | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign covered bonds | Australia | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign covered bonds | Norway
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 609	$ 287
Foreign covered bonds | Norway | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100.00%	100.00%
Foreign covered bonds | Norway | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign covered bonds | Norway | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign covered bonds | Norway | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign covered bonds | Germany
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 479	$ 357
Foreign covered bonds | Germany | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100.00%	100.00%
Foreign covered bonds | Germany | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign covered bonds | Germany | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign covered bonds | Germany | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign covered bonds | Other
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 480	$ 340
Foreign covered bonds | Other | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100.00%	100.00%
Foreign covered bonds | Other | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign covered bonds | Other | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign covered bonds | Other | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 14,093	$ 12,646
Sovereign Debt | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	65.00%	73.00%
Sovereign Debt | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	7.00%	5.00%
Sovereign Debt | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	27.00%	21.00%
Sovereign Debt | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	1.00%	1.00%
Sovereign Debt | Canada
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 732	$ 271
Sovereign Debt | Canada | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100.00%	100.00%
Sovereign Debt | Canada | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Canada | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Canada | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | UK
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 2,037	$ 3,318
Sovereign Debt | UK | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100.00%	100.00%
Sovereign Debt | UK | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | UK | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | UK | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Germany
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 2,155	$ 1,997
Sovereign Debt | Germany | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100.00%	100.00%
Sovereign Debt | Germany | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Germany | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Germany | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | France
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 1,846	$ 1,272
Sovereign Debt | France | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100.00%	100.00%
Sovereign Debt | France | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | France | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | France | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Spain
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 1,835	$ 1,453
Sovereign Debt | Spain | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Spain | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	5.00%	6.00%
Sovereign Debt | Spain | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	95.00%	94.00%
Sovereign Debt | Spain | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Italy
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 1,974	$ 1,260
Sovereign Debt | Italy | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Italy | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Italy | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100.00%	100.00%
Sovereign Debt | Italy | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Singapore
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 949	$ 742
Sovereign Debt | Singapore | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100.00%	100.00%
Sovereign Debt | Singapore | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Singapore | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Singapore | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Ireland
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 522	$ 301
Sovereign Debt | Ireland | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Ireland | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100.00%	100.00%
Sovereign Debt | Ireland | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Ireland | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Netherlands
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 471	$ 791
Sovereign Debt | Netherlands | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100.00%	100.00%
Sovereign Debt | Netherlands | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Netherlands | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Netherlands | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Japan
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 437	$ 274
Sovereign Debt | Japan | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Japan | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100.00%	100.00%
Sovereign Debt | Japan | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Japan | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Belgium
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 253	$ 79
Sovereign Debt | Belgium | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100.00%	100.00%
Sovereign Debt | Belgium | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Belgium | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Belgium | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Austria
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 294	$ 240
Sovereign Debt | Austria | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100.00%	100.00%
Sovereign Debt | Austria | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Austria | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Austria | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Hong Kong
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 206	$ 411
Sovereign Debt | Hong Kong | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100.00%	100.00%
Sovereign Debt | Hong Kong | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Hong Kong | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Hong Kong | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Other
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 382	$ 237
Sovereign Debt | Other | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	51.00%	39.00%
Sovereign Debt | Other | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	4.00%
Sovereign Debt | Other | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	18.00%	0.00%
Sovereign Debt | Other | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	31.00%	57.00%
Foreign government agencies
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 3,970	$ 2,643
Foreign government agencies | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	94.00%	95.00%
Foreign government agencies | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	6.00%	5.00%
Foreign government agencies | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign government agencies | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign government agencies | Canada
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 442	$ 71
Foreign government agencies | Canada | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	72.00%	0.00%
Foreign government agencies | Canada | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	28.00%	100.00%
Foreign government agencies | Canada | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign government agencies | Canada | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign government agencies | Germany
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 1,483	$ 1,131
Foreign government agencies | Germany | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100.00%	100.00%
Foreign government agencies | Germany | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign government agencies | Germany | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign government agencies | Germany | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign government agencies | France
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 293	$ 42
Foreign government agencies | France | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100.00%	100.00%
Foreign government agencies | France | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign government agencies | France | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign government agencies | France | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign government agencies | Netherlands
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 800	$ 678
Foreign government agencies | Netherlands | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100.00%	100.00%
Foreign government agencies | Netherlands | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign government agencies | Netherlands | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign government agencies | Netherlands | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign government agencies | Other
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 430	$ 274
Foreign government agencies | Other | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	77.00%	79.00%
Foreign government agencies | Other | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	23.00%	21.00%
Foreign government agencies | Other | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign government agencies | Other | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign government agencies | Sweden
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 276	$ 202
Foreign government agencies | Sweden | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100.00%	100.00%
Foreign government agencies | Sweden | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign government agencies | Sweden | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign government agencies | Sweden | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign government agencies | Finland
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 246	$ 245
Foreign government agencies | Finland | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100.00%	100.00%
Foreign government agencies | Finland | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign government agencies | Finland | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Foreign government agencies | Finland | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Carrying amount | Sovereign debt/sovereign guaranteed | Sovereign debt/sovereign guaranteed | Brazil
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 119	$ 134

Fair value measurement - Asse_2

Fair value measurement - Assets on Nonrecurring Basis (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Decrease in fair value of loans of underlying collateral (less than)	$ 1	$ 1
Measured at fair value on a nonrecurring basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	52	58
Other assets	113	64
Total assets	165	122
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	52	58
Other assets	113	64
Total assets	165	122
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	Sep. 30, 2020	Dec. 31, 2019
Assets:
Securities held-to-maturity	$ 47,458	$ 34,805
Liabilities:
Long-term debt	400	387
Estimated fair value
Assets:
Interest-bearing deposits with the Federal Reserve and other central banks	106,185	95,042
Interest-bearing deposits with banks	19,037	14,832
Federal funds sold and securities purchased under resale agreements	29,647	30,182
Securities held-to-maturity	47,458	34,805
Loans	54,475	54,194
Other assets, fair value	5,225	6,063
Total assets	262,027	235,118
Liabilities:
Noninterest-bearing deposits	79,470	57,630
Interest-bearing deposits	216,499	200,846
Federal funds purchased and securities sold under repurchase agreements	15,907	11,401
Payables to customers and broker-dealers	23,514	18,758
Commercial paper	671	3,959
Borrowings	607	917
Long-term debt	27,457	27,858
Total liabilities	364,125	321,369
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	4,415	4,630
Loans	0	0
Other assets, fair value	4,104	4,830
Total assets	8,519	9,460
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
Commercial paper	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	106,185	95,042
Interest-bearing deposits with banks	19,037	14,832
Federal funds sold and securities purchased under resale agreements	29,647	30,182
Securities held-to-maturity	43,043	30,175
Loans	54,475	54,194
Other assets, fair value	1,121	1,233
Total assets	253,508	225,658
Liabilities:
Noninterest-bearing deposits	79,470	57,630
Interest-bearing deposits	216,499	200,846
Federal funds purchased and securities sold under repurchase agreements	15,907	11,401
Payables to customers and broker-dealers	23,514	18,758
Commercial paper	671	3,959
Borrowings	607	917
Long-term debt	27,457	27,858
Total liabilities	364,125	321,369
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 assets, fair value	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
Commercial paper	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	106,185	95,042
Interest-bearing deposits with banks	19,027	14,811
Federal funds sold and securities purchased under resale agreements	29,647	30,182
Securities held-to-maturity	46,096	34,483
Loans	54,088	53,718
Other assets, fair value	5,225	6,063
Total assets	260,268	234,299
Liabilities:
Noninterest-bearing deposits	79,470	57,630
Interest-bearing deposits	216,842	201,836
Federal funds purchased and securities sold under repurchase agreements	15,907	11,401
Payables to customers and broker-dealers	23,514	18,758
Commercial paper	671	3,959
Borrowings	607	917
Long-term debt	25,721	27,114
Total liabilities	$ 362,732	$ 321,615

Fair value option - Assets and

Fair value option - Assets and Liabilities (Details) - Investment Management funds - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Assets of consolidated investment management funds:
Trading assets	$ 579	$ 229
Other assets	9	16
Total assets	588	245
Liabilities of consolidated investment management funds:
Other liabilities	4	1
Total liabilities	$ 4	$ 1

Fair value option - Narrative (

Fair value option - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Fair value option of long-term debt	$ 240
Long-term debt, fair value	$ 400	$ 387

Fair value option - Changes in

Fair value option - Changes in Fair Value of Loans and Long-term Debt (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Long-term debt | Foreign exchange and other trading revenue
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (loss) change in fair value	$ (1)	$ (2)	$ (3)	$ (13)	$ (15)

Derivative instruments - Narrat

Derivative instruments - Narrative (Details) - USD ($)	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Counterparty default losses recorded	$ 0
Hedging derivatives, maturities, maximum				1 year
Non-derivative financial instruments designated as hedges of net investments in foreign subsidiaries were all long-term liabilities of BNY Mellon in various currencies				$ 179,000,000
Gain or (loss) recognized in income on derivatives	10,000,000	$ (1,000,000)	$ (5,000,000)	$ (6,000,000)	$ (15,000,000)
Value-at-risk methodology assumed holding period for instruments				1 day
Value-at-risk methodology confidence level percentage				99.00%
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	31,000,000			$ 31,000,000		$ 63,000,000
Foreign exchange contracts | Net investment hedging
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Hedged financial instruments, notional amount of derivative	7,900,000,000			7,900,000,000
Foreign exchange contracts | Forecasted Foreign Currency
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Amount of pre-tax gain (loss) to be reclassified in the 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	319,000,000			$ 319,000,000
Original maturities, maximum, of hedged instruments				15 months
Pre-tax gain (loss) recognized in OCI related to cash flow hedges				$ 5,000,000
Securities available-for-sale | Interest rate swap
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Hedged financial instruments	14,500,000,000			14,500,000,000
Hedged financial instruments, notional amount of derivative	14,500,000,000			14,500,000,000
Securities available-for-sale | Foreign currency forward
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Hedged financial instruments	140,000,000			140,000,000
Hedged financial instruments, notional amount of derivative	140,000,000			140,000,000
Long-term debt | Interest rate swap
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Hedged financial instruments	13,900,000,000			13,900,000,000
Hedged financial instruments, notional amount of derivative	13,900,000,000			$ 13,900,000,000
Original maturities, minimum, of hedged instruments				5 years
Original maturities, maximum, of hedged instruments				30 years
Not Designated as Hedging Instrument, Economic Hedge | Staff expense | Equity Swap
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Gain or (loss) recognized in income on derivatives	$ 12,000,000	$ 28,000,000		$ (1,000,000)	$ 23,000,000

Derivative instruments - Gains

Derivative instruments - Gains (Losses) Related to Hedging Derivative Portfolio Recognized in the Income Statement (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in the consolidated income statement due to fair value and cash flow hedging relationships	$ 10	$ (1)	$ (5)	$ (6)	$ (15)
Interest rate contracts | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (loss) on cash flow hedges	0	0	(1)	0	(1)
Interest rate contracts | Long-term debt | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (loss) recognized on derivatives	(68)	47	146	693	631
Gain or (loss) recognized on hedged item	66	(49)	(145)	(691)	(627)
Interest rate contracts | Securities available-for-sale | Interest revenue
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (loss) recognized on derivatives	150	19	(250)	(864)	(1,119)
Gain or (loss) recognized on hedged item	(140)	(15)	243	856	1,099
FX contracts | Staff expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (loss) on cash flow hedges	0	(3)	2	(2)	1
FX contracts | Securities available-for-sale
Derivative Instruments, Gain (Loss) [Line Items]
Gain from components excluded from assessment of fair value hedge effectiveness, net	1	1	1	1	1
FX contracts | Securities available-for-sale | Other revenue
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (loss) recognized on derivatives	1	(5)	2	(11)	3
Gain or (loss) recognized on hedged item	$ 1	$ 5	$ (2)	$ 13	$ (2)

Derivative instruments - Impact

Derivative instruments - Impact of Hedging Derivatives Used in Net Investment Hedging Relationships (Details) - FX contracts - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (loss) recognized in accumulated OCI on derivatives	$ (289)	$ (45)	$ 252	$ 103	$ 322
Net interest revenue
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (loss) reclassified from accumulated OCI into income	$ 0	$ 0	$ 0	$ 0	$ 0

Derivative instruments - Hedged

Derivative instruments - Hedged Items in Fair Value Hedging Relationships (Details) - Fair value hedging - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Long-term debt
Derivative [Line Items]
Carrying amount of hedged asset or liability, Long-term debt	$ 14,889,000,000	$ 13,945,000,000
Hedged liability, fair value hedge, cumulative increase (decrease)	870,000,000	116,000,000
Hedged liability, discontinued fair value hedge, cumulative decrease	(136,000,000)	(200,000,000)
Securities available-for-sale
Derivative [Line Items]
Carrying amount of hedged asset or liability, Available-for-sale securities	14,629,000,000	13,792,000,000
Hedge accounting basis adjustment increase (decrease), Available-for-sale securities	1,650,000,000	687,000,000
Hedge accounting basis adjustment increase (decrease), discontinued hedges	187,000,000	53,000,000
Not designated as hedging | Securities available-for-sale | Foreign exchange contracts
Derivative [Line Items]
Hedged financial instruments, carrying amount	$ 140,000,000	$ 142,000,000

Derivative instruments - Impa_2

Derivative instruments - Impact of Derivative Instruments on the Balance Sheet (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Asset derivatives fair value
Total derivatives fair value	$ 9,443	$ 9,061
Effect of master netting agreements	(5,238)	(5,819)
Fair value after effect of master netting agreements	4,205	3,242
Liability derivatives fair value
Total derivatives fair value	9,776	9,206
Effect of master netting agreements	(6,183)	(5,415)
Fair value after effect of master netting agreements	3,593	3,791
Derivative asset, collateral, obligation to return cash, offset	675	1,022
Derivative liability, collateral, right to reclaim cash, offset	1,620	618
Interest rate contracts
Asset derivatives fair value
Effect of master netting agreements	(2,133)	(1,792)
Liability derivatives fair value
Effect of master netting agreements	(2,551)	(1,986)
Foreign exchange contracts
Asset derivatives fair value
Effect of master netting agreements	(3,102)	(4,021)
Liability derivatives fair value
Effect of master netting agreements	(3,631)	(3,428)
Equity contracts
Asset derivatives fair value
Effect of master netting agreements	(3)	(6)
Liability derivatives fair value
Effect of master netting agreements	(1)	(1)
Designated as hedging
Asset derivatives fair value
Total derivatives fair value	56	21
Liability derivatives fair value
Total derivatives fair value	997	607
Designated as hedging | Interest rate contracts
Notional value
Notional amount of hedge	28,441	28,365
Asset derivatives fair value
Total derivatives fair value	0	0
Liability derivatives fair value
Total derivatives fair value	803	350
Designated as hedging | Foreign exchange contracts
Notional value
Notional amount of hedge	8,369	8,390
Asset derivatives fair value
Total derivatives fair value	56	21
Liability derivatives fair value
Total derivatives fair value	194	257
Not designated as hedging
Asset derivatives fair value
Total derivatives fair value	9,387	9,040
Liability derivatives fair value
Total derivatives fair value	8,779	8,599
Not designated as hedging | Interest rate contracts
Notional value
Notional amount of hedge	206,771	306,790
Asset derivatives fair value
Total derivatives fair value	4,962	3,690
Liability derivatives fair value
Total derivatives fair value	4,246	3,250
Not designated as hedging | Foreign exchange contracts
Notional value
Notional amount of hedge	753,812	848,961
Asset derivatives fair value
Total derivatives fair value	4,410	5,331
Liability derivatives fair value
Total derivatives fair value	4,522	5,340
Not designated as hedging | Equity contracts
Notional value
Notional amount of hedge	2,241	3,189
Asset derivatives fair value
Total derivatives fair value	15	19
Liability derivatives fair value
Total derivatives fair value	8	5
Not designated as hedging | Credit contracts
Notional value
Notional amount of hedge	165	165
Asset derivatives fair value
Total derivatives fair value	0	0
Liability derivatives fair value
Total derivatives fair value	$ 3	$ 4

Derivative instruments - Revenu

Derivative instruments - Revenue from Foreign Exchange and Other Trading (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Foreign exchange	$ 151	$ 174	$ 129	$ 578	$ 439
Other trading (loss) revenue	(14)	(8)	21	44	47
Total foreign exchange and other trading revenue	$ 137	$ 166	$ 150	$ 622	$ 486

Derivative instruments - Contra

Derivative instruments - Contracts Falling under Early Termination Provisions (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Credit Derivatives [Line Items]
Aggregate fair value of OTC derivatives in net liability positions	$ 5,958	$ 3,442
Collateral posted	6,384	3,671
A3 | A-
Credit Derivatives [Line Items]
Aggregate fair value of OTC derivatives in net liability positions	10	56
Baa2 | BBB
Credit Derivatives [Line Items]
Aggregate fair value of OTC derivatives in net liability positions	565	608
Ba1 | BB plus
Credit Derivatives [Line Items]
Aggregate fair value of OTC derivatives in net liability positions	$ 3,113	$ 2,084

Derivative instruments - Offset

Derivative instruments - Offsetting (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Derivative Asset
Derivatives subject to netting arrangements, Gross assets recognized	$ 7,234	$ 7,264
Total derivatives subject to netting arrangements, Gross amounts offset in the balance sheet	5,238	5,819
Derivatives subject to netting arrangements, Net assets recognized in the balance sheet	1,996	1,445
Total derivatives, Gross amounts not offset in the balance sheet, Financial instruments	383	251
Total derivatives, Gross amounts not offset in the balance sheet, Cash collateral received	0	0
Derivative assets subject to netting arrangements, Net amount	1,613	1,194
Total derivatives not subject to netting arrangements	2,209	1,797
Total derivatives, Gross assets recognized	9,443	9,061
Fair value after effect of master netting agreements	4,205	3,242
Total derivatives, Net amount	3,822	2,991
Reverse repurchase agreements, Gross assets recognized	72,507	112,355
Reverse repurchase agreements, Gross amounts offset in the balance sheet	54,629	93,794
Reverse repurchase agreements, Net assets recognized on the balance sheet	17,878	18,561
Reverse repurchase agreements, Gross amounts not offset in the balance sheet, Financial instruments	17,852	18,554
Reverse repurchase agreements, Gross amounts not offset in the balance sheet, Cash collateral received	0	0
Reverse repurchase agreements, Net amount	26	7
Securities borrowing, Gross assets recognized	11,769	11,621
Securities borrowing, Net assets recognized on the balance sheet	11,769	11,621
Securities borrowing, Gross amounts not offset in the balance sheet, Financial instruments	11,216	11,278
Securities borrowing, Net amount	553	343
Total, Gross assets recognized	93,719	133,037
Total, Gross amounts offset in the balance sheet	59,867	99,613
Total, Net assets recognized on the balance sheet	33,852	33,424
Total, Gross amounts not offset in the balance sheet, Financial instruments	29,451	30,083
Total, Gross amounts not offset in the balance sheet, Cash collateral received	0	0
Total, Net amount	4,401	3,341
Derivative Liability
Derivatives subject to netting arrangements, Gross liabilities recognized	9,337	8,428
Derivatives subject to netting arrangements, Gross amounts offset in the balance sheet	6,183	5,415
Derivatives subject to netting arrangements, Net liabilities recognized in the balance sheet	3,154	3,013
Total derivatives, Gross amounts not offset in the balance sheet, Financial instruments	2,701	1,615
Total derivatives, Gross amounts not offset in the balance sheet, Cash collateral pledged	0	0
Derivative liabilities subject to netting arrangements, Net amount	453	1,398
Total derivatives not subject to netting arrangements	439	778
Total derivatives, Gross liabilities recognized	9,776	9,206
Fair value after effect of master netting agreements	3,593	3,791
Total derivatives, Net amount	892	2,176
Repurchase agreements, Gross liabilities recognized	69,494	104,451
Repurchase agreements, Gross amounts offset in the balance sheet	54,629	93,794
Repurchase agreements, Net liabilities recognized on the balance sheet	14,865	10,657
Repurchase agreements, Gross amounts not offset in the balance sheet, Financial instruments	14,863	10,657
Repurchase agreements, Gross amounts not offset in the balance sheet, Cash collateral pledged	1	0
Repurchase agreements, Net amount	1	0
Securities lending, Gross liabilities recognized	1,002	718
Securities lending, Net liabilities recognized on the balance sheet	1,002	718
Securities lending, Gross amounts not offset in the balance sheet, Financial instruments	961	694
Securities lending, Net amount	41	24
Total, Gross liabilities recognized	80,272	114,375
Total, Gross amounts offset in the balance sheet	60,812	99,209
Total, Net liabilities recognized on the balance sheet	19,460	15,166
Total, Gross amounts not offset in the balance sheet, Financial instruments	18,525	12,966
Total, Gross amounts not offset in the balance sheet, Cash collateral pledged	1	0
Total, Net amount	934	2,200
Interest rate contracts
Derivative Asset
Derivatives subject to netting arrangements, Gross assets recognized	3,183	2,394
Total derivatives subject to netting arrangements, Gross amounts offset in the balance sheet	2,133	1,792
Derivatives subject to netting arrangements, Net assets recognized in the balance sheet	1,050	602
Total derivatives, Gross amounts not offset in the balance sheet, Financial instruments	350	207
Total derivatives, Gross amounts not offset in the balance sheet, Cash collateral received	0	0
Derivative assets subject to netting arrangements, Net amount	700	395
Derivative Liability
Derivatives subject to netting arrangements, Gross liabilities recognized	5,035	3,550
Derivatives subject to netting arrangements, Gross amounts offset in the balance sheet	2,551	1,986
Derivatives subject to netting arrangements, Net liabilities recognized in the balance sheet	2,484	1,564
Total derivatives, Gross amounts not offset in the balance sheet, Financial instruments	2,477	1,539
Total derivatives, Gross amounts not offset in the balance sheet, Cash collateral pledged	0	0
Derivative liabilities subject to netting arrangements, Net amount	7	25
Foreign exchange contracts
Derivative Asset
Derivatives subject to netting arrangements, Gross assets recognized	4,043	4,861
Total derivatives subject to netting arrangements, Gross amounts offset in the balance sheet	3,102	4,021
Derivatives subject to netting arrangements, Net assets recognized in the balance sheet	941	840
Total derivatives, Gross amounts not offset in the balance sheet, Financial instruments	33	44
Total derivatives, Gross amounts not offset in the balance sheet, Cash collateral received	0	0
Derivative assets subject to netting arrangements, Net amount	908	796
Derivative Liability
Derivatives subject to netting arrangements, Gross liabilities recognized	4,294	4,873
Derivatives subject to netting arrangements, Gross amounts offset in the balance sheet	3,631	3,428
Derivatives subject to netting arrangements, Net liabilities recognized in the balance sheet	663	1,445
Total derivatives, Gross amounts not offset in the balance sheet, Financial instruments	224	74
Total derivatives, Gross amounts not offset in the balance sheet, Cash collateral pledged	0	0
Derivative liabilities subject to netting arrangements, Net amount	439	1,371
Equity and other contracts
Derivative Asset
Derivatives subject to netting arrangements, Gross assets recognized	8	9
Total derivatives subject to netting arrangements, Gross amounts offset in the balance sheet	3	6
Derivatives subject to netting arrangements, Net assets recognized in the balance sheet	5	3
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
Derivative assets subject to netting arrangements, Net amount	5	3
Derivative Liability
Derivatives subject to netting arrangements, Gross liabilities recognized	8	5
Derivatives subject to netting arrangements, Gross amounts offset in the balance sheet	1	1
Derivatives subject to netting arrangements, Net liabilities recognized in the balance sheet	7	4
Total derivatives, Gross amounts not offset in the balance sheet, Financial instruments	0	2
Total derivatives, Gross amounts not offset in the balance sheet, Cash collateral pledged	0	0
Derivative liabilities subject to netting arrangements, Net amount	$ 7	$ 2

Derivative instruments - Secure

Derivative instruments - Secured Borrowings (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	$ 69,494	$ 104,451
Securities lending	1,002	718
Total borrowings	70,496	105,169
Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	64,323	99,953
Securities lending	1,002	718
Total borrowings	65,325	100,671
Up to 30 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	875	1,323
Securities lending	0	0
Total borrowings	875	1,323
30 days or more
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	4,296	3,175
Securities lending	0	0
Total borrowings	4,296	3,175
U.S. Treasury
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	60,350	94,798
U.S. Treasury | Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	60,350	94,788
U.S. Treasury | Up to 30 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	0	10
U.S. Treasury | 30 days or more
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	0	0
Agency RMBS
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	3,590	5,008
Securities lending	180	160
Agency RMBS | Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	2,913	4,234
Securities lending	180	160
Agency RMBS | Up to 30 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	675	774
Securities lending	0	0
Agency RMBS | 30 days or more
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	2	0
Securities lending	0	0
Corporate bonds
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	1,728	2,119
Corporate bonds | Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	232	266
Corporate bonds | Up to 30 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	64	236
Corporate bonds | 30 days or more
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	1,432	1,617
Sovereign debt/sovereign guaranteed
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	1,279	22
Sovereign debt/sovereign guaranteed | Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	128	0
Sovereign debt/sovereign guaranteed | Up to 30 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	0	22
Sovereign debt/sovereign guaranteed | 30 days or more
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	1,151	0
State and political subdivisions
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	892	1,281
State and political subdivisions | Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	43	38
State and political subdivisions | Up to 30 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	39	166
State and political subdivisions | 30 days or more
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	810	1,077
U.S. government agencies
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	610	610
Securities lending	1	19
U.S. government agencies | Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	610	594
Securities lending	1	19
U.S. government agencies | Up to 30 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	0	16
Securities lending	0	0
U.S. government agencies | 30 days or more
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	0	0
Securities lending	0	0
Other debt securities
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	277	4
Securities lending	49	41
Other debt securities | Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	47	2
Securities lending	49	41
Other debt securities | Up to 30 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	44	0
Securities lending	0	0
Other debt securities | 30 days or more
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	186	2
Securities lending	0	0
Equity securities
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	768	609
Securities lending	772	498
Equity securities | Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	0	31
Securities lending	772	498
Equity securities | Up to 30 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	53	99
Securities lending	0	0
Equity securities | 30 days or more
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	715	479
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	Sep. 30, 2020	Dec. 31, 2019
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Securities lending indemnifications, joint venture	$ 58,000	$ 57,000
Invested in reverse repurchase agreements
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Cash collateral invested in indemnified repurchase agreements	43,000	37,000
Lending commitments
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet credit risks	47,658	49,119
Standby letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet credit risks	2,175	2,298
Off-balance sheet credit risks participations	145	146
Commercial letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet credit risks	87	74
Securities lending indemnifications
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet credit risks	$ 414,324	$ 408,378

Commitments and contingent li_4

Commitments and contingent liabilities - Narrative (Details)	Sep. 09, 2020USD ($)	Dec. 19, 2019claim	Dec. 17, 2015lawsuit	Sep. 30, 2020USD ($)claim	Dec. 31, 2019USD ($)	Dec. 31, 2009claim
Commitments and Contingencies Disclosure [Line Items]
Lending commitment maturing in less than one year				$ 31,000,000,000
Lending commitment maturing in one to five years				16,300,000,000
Lending commitment maturing over five years				$ 336,000,000
Collateralization percentage generally required for a securities lending transaction with indemnification against broker default				102.00%
Securities lending indemnifications, secured amount of collateral				$ 435,000,000,000	$ 428,000,000,000
Securities lending indemnifications, joint venture				58,000,000,000	57,000,000,000
Securities lending indemnifications, collateral joint venture				$ 61,000,000,000	61,000,000,000
Matters Related to R. Allen Stanford
Commitments and Contingencies Disclosure [Line Items]
Number of lawsuits or class actions pending | claim						2
Number of claims dismissed | claim		6
Number of lawsuits filed | claim				13
Brazilian Postalis Litigation
Commitments and Contingencies Disclosure [Line Items]
Number of lawsuits filed | lawsuit			3
Loss contingency, damages awarded, value	$ 41,700,000
Loss contingency, damages sought, value	$ 1,800,000
Maximum
Commitments and Contingencies Disclosure [Line Items]
Loss contingency, aggregate range of reasonable loss (up to)				$ 750,000,000
Standby letters of credit
Commitments and Contingencies Disclosure [Line Items]
Standby letters of credit (SBLC) collateralized with cash and securities				200,000,000	184,000,000
SBLC expiring within one year				1,600,000,000
SBLC expiring within one to five years				568,000,000
SBLC expiring after five years				1,000,000
Off-balance sheet credit risks				2,175,000,000	2,298,000,000
Commercial letters of credit
Commitments and Contingencies Disclosure [Line Items]
Off-balance sheet credit risks				87,000,000	74,000,000
Unsettled Repurchase Agreements
Commitments and Contingencies Disclosure [Line Items]
Guarantor obligations, maximum exposure, undiscounted				150,000,000
Unsettled Reverse Repurchase Agreements
Commitments and Contingencies Disclosure [Line Items]
Guarantor obligations, maximum exposure, undiscounted				0
Operating segments
Commitments and Contingencies Disclosure [Line Items]
Allowance for credit losses on lending related commitments				$ 135,000,000	$ 94,000,000
Federal Court | Mortgage-Securitization Trusts Proceedings
Commitments and Contingencies Disclosure [Line Items]
Number of lawsuits or class actions pending | claim				3
State Court | Mortgage-Securitization Trusts Proceedings
Commitments and Contingencies Disclosure [Line Items]
Number of lawsuits or class actions pending | claim				1

Commitments and contingent li_5

Commitments and contingent liabilities - Standby Letters of Credits by Investment Grade (Details) - Standby letters of credit	Sep. 30, 2020	Dec. 31, 2019
Investment grade
Concentration Risk [Line Items]
Standby letters of credit by investment grade	87.00%	90.00%
Non-investment grade
Concentration Risk [Line Items]
Standby letters of credit by investment grade	13.00%	10.00%

Commitments and contingent li_6

Commitments and contingent liabilities - Significant Industry Concentrations Related to Credit Exposure (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	$ 55,491	$ 54,953
Financial institutions
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	11,000
Unfunded commitments	33,500
Total exposure	44,500
Financial institutions | Securities industry
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	2,800
Unfunded commitments	22,300
Total exposure	25,100
Financial institutions | Banks
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	6,100
Unfunded commitments	1,100
Total exposure	7,200
Financial institutions | Asset managers
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	1,200
Unfunded commitments	6,500
Total exposure	7,700
Financial institutions | Insurance
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	100
Unfunded commitments	2,700
Total exposure	2,800
Financial institutions | Government
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	100
Unfunded commitments	200
Total exposure	300
Financial institutions | Other
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	700
Unfunded commitments	700
Total exposure	1,400
Commercial
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	1,900
Unfunded commitments	12,200
Total exposure	14,100
Commercial | Services and other
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	1,000
Unfunded commitments	3,500
Total exposure	4,500
Commercial | Manufacturing
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	700
Unfunded commitments	3,800
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	900
Total exposure	$ 900

Supplemental information to t_3

Supplemental information to the Consolidated Statement of Cash Flows (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Supplemental Cash Flow Information [Abstract]
Transfers from loans to other assets for other real estate owned	$ 1	$ 1
Change in assets of consolidated investment management funds	343	120
Change in liabilities of consolidated investment management funds	3	13
Change in nonredeemable noncontrolling interests of consolidated investment management funds	149	102
Securities purchased not settled	846	804
Premises and equipment/capitalized software funded by finance lease obligations	0	14
Premises and equipment/operating lease obligations	$ 126	$ 1,440

Supplemental information to t_4

Supplemental information to the Consolidated Statement of Cash Flows - Footnote (Details) - USD ($) $ in Millions	9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Accounting Standards Update [Extensible List]		us-gaap:AccountingStandardsUpdate201602Member	us-gaap:AccountingStandardsUpdate201613Member	us-gaap:AccountingStandardsUpdate201802Member
Premises and equipment/operating lease obligations	$ 126	$ 1,440
New or Modified Leases
Lessee, Lease, Description [Line Items]
Premises and equipment/operating lease obligations		196
Cumulative Effect, Period Of Adoption, Adjustment
Lessee, Lease, Description [Line Items]
Premises and equipment/operating lease obligations		$ 1,244

Lines of business - Narrative (

Lines of business - Narrative (Details)	9 Months Ended
	Sep. 30, 2020business
Segment Reporting [Abstract]
Number of principal businesses (business)	2

Lines of business - Contributio

Lines of business - Contribution of Segments to Overall Profitability (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020		Sep. 30, 2019
Segment Reporting Information [Line Items]
Total fee and other revenue	$ 3,117	$ 3,176	$ 3,128	$ 9,625		$ 9,272
Net interest revenue (expense)	703	780	730	2,297		2,373
Provision for credit losses	9	143	(16)	321	[1]	(17)	[1]
Income from consolidated investment management funds, net of noncontrolling interests	937	950	1,038	2,867		3,001
Investment income (loss), net	27	54	3	43		39
Net income (loss) attributable to noncontrolling interests	7	15	3	4		17
Operating segments
Segment Reporting Information [Line Items]
Total fee and other revenue	3,137	3,215	3,128	9,664		9,294
Net interest revenue (expense)	703	780	730	2,297		2,373
Total revenue	3,840	3,995	3,858	11,961		11,667
Provision for credit losses	9	143	(16)	321		(17)
Noninterest expense	2,681	2,686	2,590	8,079		7,936
Income (loss) before taxes	$ 1,150	$ 1,166	$ 1,284	$ 3,561		$ 3,748
Pre-tax operating margin	30.00%	29.00%	33.00%	30.00%		32.00%
Average assets	$ 414,865	$ 415,359	$ 350,679	$ 405,203		$ 343,129
Operating segments | Investment Services
Segment Reporting Information [Line Items]
Total fee and other revenue	2,246	2,339	2,296	7,021		6,690
Net interest revenue (expense)	681	768	761	2,255		2,348
Total revenue	2,927	3,107	3,057	9,276		9,038
Provision for credit losses	(10)	145	(15)	284		(11)
Noninterest expense	2,020	1,989	1,973	5,996		5,917
Income (loss) before taxes	$ 917	$ 973	$ 1,099	$ 2,996		$ 3,132
Pre-tax operating margin	31.00%	31.00%	36.00%	32.00%		35.00%
Average assets	$ 329,324	$ 335,288	$ 269,926	$ 322,924		$ 263,631
Operating segments | Investment and Wealth Management
Segment Reporting Information [Line Items]
Total fee and other revenue	871	838	838	2,555		2,561
Net interest revenue (expense)	47	48	49	147		175
Total revenue	918	886	887	2,702		2,736
Provision for credit losses	12	7	0	28		(1)
Noninterest expense	661	658	592	2,014		1,916
Income (loss) before taxes	$ 245	$ 221	$ 295	$ 660		$ 821
Pre-tax operating margin	27.00%	25.00%	33.00%	24.00%		30.00%
Average assets	$ 30,160	$ 30,327	$ 27,840	$ 30,343		$ 29,815
Income from consolidated investment management funds, net of noncontrolling interests	20	39	0	39		22
Investment income (loss), net	27	54	3	43		39
Net income (loss) attributable to noncontrolling interests	7	15	3	4		17
Operating segments | Other
Segment Reporting Information [Line Items]
Total fee and other revenue	20	38	(6)	88		43
Net interest revenue (expense)	(25)	(36)	(80)	(105)		(150)
Total revenue	(5)	2	(86)	(17)		(107)
Provision for credit losses	7	(9)	(1)	9		(5)
Noninterest expense	0	39	25	69		103
Income (loss) before taxes	(12)	(28)	(110)	(95)		(205)
Average assets	$ 55,381	$ 49,744	$ 52,913	$ 51,936		$ 49,683
[1]	In the first quarter of 2020, we adopted new accounting guidance included in ASU 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments, on a prospective basis. See Note 2 of the Notes to Consolidated Financial Statements for additional information.

Uncategorized Items - bk-202009

Label	Element	Value
Cash and Cash Equivalents, at Carrying Value	us-gaap_CashAndCashEquivalentsAtCarryingValue	$ 6,718,000,000
Cash and Cash Equivalents, at Carrying Value	us-gaap_CashAndCashEquivalentsAtCarryingValue	4,104,000,000
Restricted Cash and Cash Equivalents	us-gaap_RestrictedCashAndCashEquivalents	2,891,000,000
Restricted Cash and Cash Equivalents	us-gaap_RestrictedCashAndCashEquivalents	$ 2,274,000,000