The Bank of New York Mellon Corporation (BK) 10-Q 7 May 20 2020 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information	3 Months Ended
	Mar. 31, 2020shares
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 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)	885,442,821
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
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
		Mar. 31, 2020		Dec. 31, 2019	Mar. 31, 2019
Fee and other revenue
Asset servicing fees		$ 1,159		$ 1,148	$ 1,122
Clearing services fees		470		421	398
Issuer services fees		263		264	251
Treasury services fees		149		147	132
Total investment services fees		2,041		1,980	1,903
Investment management and performance fees		862		883	841
Foreign exchange and other trading revenue		319		168	170
Financing-related fees		59		46	51
Distribution and servicing		31		34	31
Investment and other income		11		860	35
Total fee revenue		3,323		3,971	3,031
Net securities gains (losses)		9		(25)	1
Total fee and other revenue		3,332		3,946	3,032
Operations of consolidated investment management funds
Investment (loss) income		(38)		17	26
Interest of investment management fund note holders		0		0	0
(Loss) income from consolidated investment management funds		(38)		17	26
Net interest revenue
Interest revenue		1,570		1,721	1,920
Interest expense		756		906	1,079
Net interest revenue		814		815	841
Total revenue		4,108		4,778	3,899
Provision for credit losses	[2]	169	[1]	(8)	7	[1]
Noninterest expense
Staff		1,482		1,639	1,524
Professional, legal and other purchased services		330		367	325
Software and equipment		326		326	283
Net occupancy		135		151	137
Sub-custodian and clearing		105		119	105
Distribution and servicing		91		92	91
Business development		42		65	45
Bank assessment charges		35		32	31
Amortization of intangible assets		26		28	29
Other		140		145	129
Total noninterest expense		2,712		2,964	2,699
Income
Income before income taxes		1,227		1,822	1,193
Provision for income taxes		265		373	237
Net income		962		1,449	956
Net loss (income) attributable to noncontrolling interests (includes $18, $(9) and $(10) related to consolidated investment management funds, respectively)		18		(9)	(10)
Net income applicable to shareholders of The Bank of New York Mellon Corporation		980		1,440	946
Preferred stock dividends		(36)		(49)	(36)
Net income applicable to common shareholders of The Bank of New York Mellon Corporation		944		1,391	910
Net income applicable to common shareholders of The Bank of New York Mellon Corporation used for the earnings per share calculation (in millions)
Net income applicable to common shareholders of The Bank of New York Mellon Corporation		944		1,391	910
Less: Earnings allocated to participating securities		3		6	5
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		$ 941		$ 1,385	$ 905
Average common shares and equivalents outstanding of The Bank of New York Mellon Corporation
Basic (shares)		894,122		911,324	962,397
Common stock equivalents		3,941		5,191	6,071
Less: Participating securities		(1,374)		(1,776)	(2,508)
Diluted (shares)		896,689		914,739	965,960
Anti-dilutive securities (shares)	[3]	2,584		3,515	5,550
Earnings per share applicable to the common shareholders of The Bank of New York Mellon Corporation
Basic (usd per share)		$ 1.05		$ 1.52	$ 0.94
Diluted (usd per share)		$ 1.05		$ 1.52	$ 0.94
[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]	The provision for credit losses for the quarter ended March 31, 2020 relates to the financial instruments within the scope of Accounting Standards Update (“ASU”) 2016-13, Financial Instruments - Credit Losses: Measurement of Credit Losses On Financial Instruments. See Note 2 of the Notes to Consolidated Financial Statements for additional information.
[3]	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 Income Statement_2

Consolidated Income Statement (unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Net loss (income) attributable to noncontrolling interests	$ 18	$ (9)	$ (10)
Investment Management
Net loss (income) attributable to noncontrolling interests	$ 18	$ (9)	$ (10)

Consolidated Comprehensive Inco

Consolidated Comprehensive Income Statement (unaudited) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income		$ 962	$ 1,449	$ 956
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments		(369)	388	29
Unrealized gain (loss) on assets available-for-sale:
Unrealized gain (loss) arising during the period		183	(77)	239
Reclassification adjustment		(7)	19	(1)
Total unrealized gain (loss) on assets available-for-sale		176	(58)	238
Defined benefit plans:
Prior service cost arising during the period		0	(1)	0
Net (loss) gain arising during the period		0	(78)	(9)
Amortization of prior service credit, net loss and initial obligation included in net periodic benefit cost		18	4	10
Total defined benefit plans		18	(75)	1
Net unrealized (loss) gain on cash flow hedges		(11)	4	5
Total other comprehensive (loss) income, net of tax	[1]	(186)	259	273
Total comprehensive income		776	1,708	1,229
Net loss (income) attributable to noncontrolling interests		18	(9)	(10)
Other comprehensive loss (income) attributable to noncontrolling interests		2	(4)	(2)
Comprehensive income applicable to shareholders of The Bank of New York Mellon Corporation		796	1,695	1,217
Other comprehensive (loss) income attributable to The Bank of New York Mellon Corporation shareholders		$ (184)	$ 255	$ 271
[1]	Other comprehensive (loss) income attributable to The Bank of New York Mellon Corporation shareholders was $(184) million for the quarter ended March 31, 2020 , $255 million for the quarter ended Dec. 31, 2019 and $271 million for the quarter ended March 31, 2019 .

Consolidated Balance Sheet (una

Consolidated Balance Sheet (unaudited) - USD ($) $ in Millions		Mar. 31, 2020	Dec. 31, 2019
Securities:
Held-to-maturity (including allowance for credit losses of less than $1 at March 31, 2020; fair value of $38,418 and $34,805)		$ 37,305	$ 34,483
Available-for-sale (including allowance for credit losses of $15 at March 31, 2020; amortized cost of $99,503 and $87,435)		101,968	88,550
Goodwill		17,240	17,386
Intangible assets		3,070	3,107
Other assets (including allowance for credit losses on accounts receivable of $4 at March 31, 2020, also includes $527 and $419, at fair value)		27,446	20,221
Total assets		468,155	381,508
Deposits:
Total liabilities		426,776	339,780
Temporary equity
Redeemable noncontrolling interests		140	143
Permanent equity
Preferred stock – par value $0.01 per share; authorized 100,000,000 shares; issued 35,826 and 35,826 shares		3,542	3,542
Common stock – par value $0.01 per share; authorized 3,500,000,000 shares; issued 1,380,881,570 and 1,374,443,376 shares		14	14
Additional paid-in capital		27,644	27,515
Retained earnings		32,601	31,894
Accumulated other comprehensive loss, net of tax		(2,827)	(2,638)
Less: Treasury stock of 495,438,749 and 473,760,338 common shares, at cost		(19,829)	(18,844)
Total The Bank of New York Mellon Corporation shareholders’ equity		41,145	41,483
Nonredeemable noncontrolling interests of consolidated investment management funds		94	102
Total permanent equity	[1]	41,239	41,585	[2]
Total liabilities, temporary equity and permanent equity		468,155	381,508
Investment Management funds
Securities:
Trading assets		215	229
Assets of consolidated investment management funds, at fair value		229	245
Deposits:
Liabilities of consolidated investment management funds, at fair value		1	1
Operating segments
Assets
Cash and due from banks (including allowance for credit losses of $3 at March 31, 2020)	[3]	5,091	4,830
Interest-bearing deposits with the Federal Reserve and other central banks		146,535	95,042
Interest-bearing deposits with banks (including allowance for credit losses of $1 at March 31, 2020; $4,714 and $2,437 is restricted)	[3]	22,672	14,811
Federal funds sold and securities purchased under resale agreements (including allowance for credit losses of $(18) at March 31, 2020)		27,363	30,182
Securities:
Held-to-maturity (including allowance for credit losses of less than $1 at March 31, 2020; fair value of $38,418 and $34,805)	[3]	37,305	34,483
Available-for-sale (including allowance for credit losses of $15 at March 31, 2020; amortized cost of $99,503 and $87,435)	[3]	101,968	88,550
Total securities		139,273	123,033
Trading assets		12,918	13,571
Loans		62,368	54,953
Allowance for credit losses	[3]	(140)	(122)
Net loans		62,228	54,831
Premises and equipment		3,514	3,625
Accrued interest receivable		576	624
Goodwill		17,240	17,386
Intangible assets		3,070	3,107
Other assets (including allowance for credit losses on accounts receivable of $4 at March 31, 2020, also includes $527 and $419, at fair value)	[3]	27,446	20,221
Total assets		467,926	381,263
Deposits:
Noninterest-bearing (principally U.S. offices)		96,600	57,630
Interest-bearing deposits in U.S. offices		118,466	101,542
Interest-bearing deposits in non-U.S. offices		121,651	100,294
Total deposits		336,717	259,466
Federal funds purchased and securities sold under repurchase agreements		13,128	11,401
Trading liabilities		6,625	4,841
Payables to customers and broker-dealers		24,016	18,758
Commercial paper		1,121	3,959
Other borrowed funds		1,544	599
Accrued taxes and other expenses		4,705	5,642
Other liabilities (including allowance for credit losses on lending-related commitments of $148 and $94, also includes $973 and $607, at fair value)	[3]	11,425	7,612
Long-term debt (includes $397 and $387, at fair value)		27,494	27,501
Total liabilities		426,775	339,779
Operating segments | Investment Management funds
Securities:
Assets of consolidated investment management funds, at fair value		229	245
Deposits:
Liabilities of consolidated investment management funds, at fair value		$ 1	$ 1
[1]	Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $37,941 million at Dec. 31, 2019 and $37,603 million at March 31, 2020 .
[2]	Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $37,578 million at Sept. 30, 2019 and $37,941 million at Dec. 31, 2019 .
[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	Mar. 31, 2020	Dec. 31, 2019
Restricted cash	$ 5,000	$ 2,000
Debt securities, held-to-maturity, fair value	38,418	34,805
Debt securities, available-for-sale, allowance for credit loss	15
Debt securities, available-for-sale, amortized cost	99,503	87,435
Long-term debt, fair value	$ 397	$ 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)	35,826	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)	1,380,881,570	1,374,443,376
Treasury stock, common shares (shares)	495,438,749	473,760,338
Operating segments
Cash and due from banks, allowance for credit loss	$ 3
Interest-bearing deposits with banks, allowance for credit losses	1
Restricted cash	4,714	$ 2,437
Federal funds sold and securities purchased under resale agreements, allowance for credit losses	18
Debt securities, held-to-maturity, allowance for credit loss (less than)	1
Debt securities, held-to-maturity, fair value	38,418	34,805
Debt securities, available-for-sale, allowance for credit loss	15
Debt securities, available-for-sale, amortized cost	99,503	87,435
Other assets, allowance for credit loss on accounts receivable	4
Other assets, fair value	527	419
Allowance for credit losses on lending related commitments	148	94
Other liabilities, fair value	973	607
Long-term debt, fair value	$ 397	$ 387

Consolidated Statement of Cash

Consolidated Statement of Cash Flows (unaudited) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2020		Dec. 31, 2019	Mar. 31, 2019		Mar. 31, 2020	Mar. 31, 2019
Operating activities
Net income		$ 962		$ 1,449	$ 956
Net (income) loss attributable to noncontrolling interests		18		(9)	(10)
Net income applicable to shareholders of The Bank of New York Mellon Corporation		980		1,440	946
Adjustments to reconcile net income to net cash (used for) operating activities:
Provision for credit losses	[2]	169	[1]	(8)	7	[1]
Pension plan contributions		(6)			(17)
Depreciation and amortization		354			302
Deferred tax (benefit)		(300)			(28)
Net securities (gains)		(9)		25	(1)
Change in trading assets and liabilities		2,419			(57)
Change in accruals and other, net		(5,292)			(2,101)
Net cash (used for) operating activities		(1,685)			(949)
Investing activities
Change in interest-bearing deposits with banks		(6,066)			413
Change in interest-bearing deposits with the Federal Reserve and other central banks		(52,370)			7,096
Purchases of securities held-to-maturity		(5,151)			(1,403)
Paydowns of securities held-to-maturity		1,503			914
Maturities of securities held-to-maturity		1,310			500
Purchases of securities available-for-sale		(22,222)			(8,894)
Sales of securities available-for-sale		3,107			3,692
Paydowns of securities available-for-sale		2,042			1,400
Maturities of securities available-for-sale		4,727			7,223
Net change in loans		(7,626)			3,010
Sales of loans and other real estate		1			51
Change in federal funds sold and securities purchased under resale agreements		2,739			6,640
Net change in seed capital investments		18			3
Purchases of premises and equipment/capitalized software		(264)			(264)
Other, net		(349)			429
Net cash (used for) provided by investing activities		(78,601)			20,810
Financing activities
Change in deposits		79,678			(16,146)
Change in federal funds purchased and securities sold under repurchase agreements		1,775			(2,482)
Change in payables to customers and broker-dealers		5,329			(414)
Change in other borrowed funds		961			695
Change in commercial paper		(2,838)			834
Net proceeds from the issuance of long-term debt		998			0
Repayments of long-term debt		(1,750)			(1,500)
Proceeds from the exercise of stock options		30			31
Issuance of common stock		3			13
Treasury stock acquired		(985)			(555)
Common cash dividends paid		(282)			(270)
Preferred cash dividends paid		(36)			(36)
Other, net		(3)			(7)
Net cash provided by (used for) financing activities		82,880			(19,837)
Effect of exchange rate changes on cash		(56)			11
Change in cash and due from banks and restricted cash
Change in cash and due from banks and restricted cash		2,538			35
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		9,805		7,267	8,293
Cash and due from banks at end of period (unrestricted cash)							$ 5,091	$ 5,980
Restricted cash at end of period							4,714	2,313
Cash and due from banks and restricted cash at end of period		9,805		$ 7,267	8,293		$ 9,805	$ 8,293
Supplemental disclosures
Interest paid		851			1,122
Income taxes paid		185			100
Income taxes refunded		$ 10			$ 3
[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]	The provision for credit losses for the quarter ended March 31, 2020 relates to the financial instruments within the scope of Accounting Standards Update (“ASU”) 2016-13, Financial Instruments - Credit Losses: Measurement of Credit Losses On Financial Instruments. 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
Common stock issued under:
The Bank of New York Mellon Corporation shareholders’ equity				$ 37,096
Beginning balance at Dec. 31, 2018	$ 40,739	[1]	$ 3,542	14	$ 27,118	$ 28,652	$ (3,171)	$ (15,517)	$ 101	$ 129
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued to shareholders of noncontrolling interests										20
Redemption of subsidiary shares from noncontrolling interests										(7)
Other net changes in noncontrolling interests	30				19				11	(22)
Net income	956					946			10
Other comprehensive (loss) income attributable to The Bank of New York Mellon Corporation shareholders	271						271
Other comprehensive income (loss)	2									2
Dividends:
Common stock	(270)					(270)
Preferred stock	(36)					(36)
Repurchase of common stock	(555)							(555)
Common stock issued under:
Employee benefit plans	10				10
Direct stock purchase and dividend reinvestment plan	11				11
Stock awards and options exercised	191				191
Ending balance at Mar. 31, 2019	41,347	[1]	3,542	14	27,349	29,382	(2,990)	(16,072)	122	122
Common stock issued under:
The Bank of New York Mellon Corporation shareholders’ equity				37,683
The Bank of New York Mellon Corporation shareholders’ equity				37,578
Beginning balance at Sep. 30, 2019	41,323	[2]	3,542	14	27,471	30,789	(2,893)	(17,803)	203	147
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued to shareholders of noncontrolling interests										25
Redemption of subsidiary shares from noncontrolling interests										(41)
Other net changes in noncontrolling interests	(127)				(17)				(110)	8
Net income	1,449					1,440			9
Other comprehensive (loss) income attributable to The Bank of New York Mellon Corporation shareholders	255						255
Other comprehensive income (loss)	4									4
Dividends:
Common stock	(286)					(286)
Preferred stock	(49)					(49)
Repurchase of common stock	(1,041)							(1,041)
Common stock issued under:
Employee benefit plans	6				6
Stock awards and options exercised	55				55
Ending balance at Dec. 31, 2019	41,585	[2],[3]	3,542	14	27,515	31,894	(2,638)	(18,844)	102	143
Common stock issued under:
The Bank of New York Mellon Corporation shareholders’ equity	41,483			37,941
Shares issued to shareholders of noncontrolling interests										17
Redemption of subsidiary shares from noncontrolling interests										(16)
Other net changes in noncontrolling interests	5				(5)				10	(2)
Net income	962					980			(18)
Other comprehensive (loss) income attributable to The Bank of New York Mellon Corporation shareholders	(184)						(184)
Other comprehensive income (loss)	(2)									(2)
Common stock	(282)					(282)
Preferred stock	(36)					(36)
Repurchase of common stock	(985)							(985)
Employee benefit plans	9				9
Stock awards and options exercised	125				125
Ending balance at Mar. 31, 2020	41,239	[3]	$ 3,542	14	$ 27,644	$ 32,601	$ (2,827)	$ (19,829)	$ 94	$ 140
Common stock issued under:
The Bank of New York Mellon Corporation shareholders’ equity	$ 41,145			$ 37,603
[1]	Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $37,096 million at Dec. 31, 2018 and $37,683 million at March 31, 2019 .
[2]	Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $37,578 million at Sept. 30, 2019 and $37,941 million at Dec. 31, 2019 .
[3]	Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $37,941 million at Dec. 31, 2019 and $37,603 million at March 31, 2020 .

Consolidated Statement of Cha_2

Consolidated Statement of Changes in Equity (unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Statement of Stockholders' Equity [Abstract]
Dividends on common stock, cash paid (usd per share)	$ 0.31	$ 0.31	$ 0.28

Basis of presentation

Basis of presentation	3 Months Ended
	Mar. 31, 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	3 Months Ended
	Mar. 31, 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. The Coronavirus Aid, Relief, and Economic Security Act (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 would otherwise be treated as TDRs and the determination that such a loan modification is a TDR. 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 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 balances related to these instruments is presented in total with other interest-bearing instruments in the consolidated balance sheet. Accrued interest 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 most recent reporting period and did not own such assets as of March 31, 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 risks. Once determined in the aggregate, our qualitative allowance is then allocated to each of our financial instrument portfolios except for debt securities and those instruments carried in other assets based on the respective instruments’ quantitative allowance balances. The allocation of this additional allowance for credit losses is inherently judgmental, and the entire allowance for credit losses is available to absorb credit losses regardless of the nature of the loss.

Acquisitions and dispositions

Acquisitions and dispositions	3 Months Ended
	Mar. 31, 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 first quarter of 2020 . A t March 31, 2020 , we are potentially obligated to pay additional consideration which, using reasonable assumptions, could range from $5 million to $13 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	3 Months Ended
	Mar. 31, 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 March 31, 2020 and Dec. 31, 2019 . Securities at March 31, 2020 Gross unrealized Fair value Amortized cost (in millions) Gains Losses Available-for-sale: Agency RMBS $ 26,484 $ 426 $ 219 $ 26,691 U.S. Treasury 21,430 1,651 — 23,081 Sovereign debt/sovereign guaranteed 12,791 128 9 12,910 Agency commercial mortgage-backed securities (“MBS”) 9,315 510 20 9,805 Foreign covered bonds 5,284 24 36 5,272 Supranational 4,316 38 6 4,348 Collateralized loan obligations (“CLOs”) 4,341 1 244 4,098 Commercial paper/certificates of deposit (“CDs”) 2,813 3 2 2,814 Foreign government agencies 2,736 31 3 2,764 Non-agency commercial MBS 2,501 35 63 2,473 Other asset-backed securities (“ABS”) 2,257 6 43 2,220 U.S. government agencies 2,059 156 2 2,213 Non-agency RMBS (a) 1,404 114 43 1,475 State and political subdivisions 967 20 2 985 Corporate bonds 804 16 2 818 Other debt securities 1 — — 1 Total securities available-for-sale (b)(c) $ 99,503 $ 3,159 $ 694 $ 101,968 Held-to-maturity: Agency RMBS $ 29,518 $ 874 $ 5 $ 30,387 U.S. Treasury 2,937 121 — 3,058 Agency commercial MBS 1,868 84 — 1,952 U.S. government agencies 1,244 7 3 1,248 Sovereign debt/sovereign guaranteed 919 37 — 956 Commercial paper/CDs 651 — — 651 Foreign covered bonds 77 — — 77 Non-agency RMBS 75 3 5 73 State and political subdivisions 16 — — 16 Total securities held-to-maturity $ 37,305 $ 1,126 $ 13 $ 38,418 Total securities $ 136,808 $ 4,285 $ 707 $ 140,386 (a) Includes $535 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 allowance for credit loss on available-for-sale securities of $15 million primarily relates to CLOs and Non-Agency RMBS. See Note 2 for additional information. (c) Includes gross unrealized gains of $29 million and gross unrealized losses of $59 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 unrealized Amortized cost Fair value (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) 1Q20 4Q19 1Q19 Realized gross gains $ 12 $ 5 $ 5 Realized gross losses (3 ) (29 ) (4 ) Recognized gross impairments — (1 ) — Total net securities gains (losses) $ 9 $ (25 ) $ 1 The following table presents pre-tax net securities gains (losses) by type. Net securities gains (losses) (in millions) 1Q20 4Q19 1Q19 U.S. Treasury $ 5 $ (17 ) $ 1 Other 4 (8 ) — Total net securities gains (losses) $ 9 $ (25 ) $ 1 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 $15 million at March 31, 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 in the 2019 Annual Report. Credit quality indicators - Securities At March 31, 2020 , the gross unrealized losses on the securities portfolio were primarily attributable to an increase in interest rates from the date of purchase, and for certain securities that were transferred from available-for-sale to held-to-maturity, an increase in interest rates through the date they were transferred. Specifically, $59 million of the unrealized losses at March 31, 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 at March 31, 2020 (a) Less than 12 months 12 months or more Total Fair value Unrealized losses Fair value Unrealized losses Fair value Unrealized losses (in millions) Agency RMBS $ 5,200 $ 53 $ 6,969 $ 166 $ 12,169 $ 219 Sovereign debt/sovereign guaranteed 2,801 9 104 — 2,905 9 Agency commercial MBS 1,440 14 522 6 1,962 20 Foreign covered bonds 2,934 33 255 3 3,189 36 Supranational 1,663 6 203 — 1,866 6 CLOs 3,456 189 554 41 4,010 230 Commercial paper/CDs 1,225 2 — — 1,225 2 Foreign government agencies 942 3 50 — 992 3 Non-agency commercial MBS 1,050 60 37 3 1,087 63 Other ABS 1,283 38 193 5 1,476 43 U.S. government agencies 73 2 — — 73 2 Non-agency RMBS (b) 737 27 96 12 833 39 State and political subdivisions 37 2 15 — 52 2 Corporate bonds 232 2 — — 232 2 Total securities available-for-sale (c) $ 23,073 $ 440 $ 8,998 $ 236 $ 32,071 $ 676 (a) Includes $3.9 billion of securities with an unrealized loss of greater than $1 million. (b) Includes $97 million of securities with an unrealized loss of $7 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 $59 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 value Unrealized losses Fair value Unrealized losses Fair value Unrealized losses 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 March 31, 2020 (a) Ratings (b) BB+ (dollars in millions) Amortized Unrealized gain (loss) AAA/ A+/ BBB+/ A1+/A1 Not Agency RMBS $ 29,518 $ 869 100 % — % — % — % — % — % U.S. Treasury 2,937 121 100 — — — — — Agency commercial MBS 1,868 84 100 — — — — — U.S. government agencies 1,244 4 100 — — — — — Sovereign debt/sovereign guaranteed (c) 919 37 100 — — — — — Commercial paper/CDs 651 — — — — — 100 — Foreign covered bonds (d) 77 — 100 — — — — — Non-agency RMBS 75 (2 ) 42 43 3 12 — — State and political subdivisions 16 — 7 2 6 — — 85 Total held-to-maturity securities $ 37,305 $ 1,113 98 % — % — % — % 2 % — % (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. (d) Primarily consists of exposure to Canada. Maturity distribution The following table shows the maturity distribution by carrying amount and yield (on a tax equivalent basis) of our securities portfolio. Maturity distribution and yields on securities at March 31, 2020 U.S. Treasury U.S. government agencies State and political subdivisions Other bonds, notes and debentures Mortgage/ asset-backed (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 $ 1,353 2.58 % $ 26 2.46 % $ 165 2.93 % $ 11,377 1.20 % $ — — % $ 12,921 Over 1 through 5 years 12,422 1.53 474 1.73 719 3.29 14,763 0.76 — — 28,378 Over 5 through 10 years 6,009 1.69 1,594 2.70 88 2.58 2,601 0.65 — — 10,292 Over 10 years 3,297 3.11 119 2.06 13 2.32 186 1.67 — — 3,615 Mortgage-backed securities — — — — — — — — 40,444 2.50 40,444 Asset-backed securities — — — — — — — — 6,318 2.70 6,318 Total $ 23,081 1.86 % $ 2,213 2.46 % $ 985 3.15 % $ 28,927 0.93 % $ 46,762 2.53 % $ 101,968 Securities held-to-maturity: One year or less $ — — % $ — — % $ — — % $ 758 1.53 % $ — — % $ 758 Over 1 through 5 years 2,937 1.98 603 1.86 3 5.68 703 0.68 — — 4,246 Over 5 through 10 years — — 259 2.30 — — 186 0.69 — — 445 Over 10 years — — 382 2.43 13 4.76 — — — — 395 Mortgage-backed securities — — — — — — — — 31,461 2.88 31,461 Total $ 2,937 1.98 % $ 1,244 2.12 % $ 16 4.92 % $ 1,647 1.06 % $ 31,461 2.88 % $ 37,305 (a) Yields are based upon the amortized cost of securities. Pledged assets At March 31, 2020 , BNY Mellon had pledged assets of $131 billion , including $99 billion pledged as collateral for potential borrowings 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 March 31, 2020 included $111 billion of securities, $13 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 March 31, 2020 and Dec. 31, 2019 , pledged assets included $24 billion and $29 billion , respectively, for which the recipients were permitted to sell or repledge the assets delivered. At March 31, 2020 , we pledged commercial paper and CDs totaling $651 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 March 31, 2020 and Dec. 31, 2019 , the market value of the securities received that can be sold or repledged was $132 billion and $153 billion , respectively. We routinely sell or repledge these securities through delivery to third parties. As of March 31, 2020 and Dec. 31, 2019 , the market value of securities collateral sold or repledged was $101 billion and $107 billion , respectively. Restricted cash and securities Cash and securities may be segregated under federal and other regulations or requirements. At March 31, 2020 and Dec. 31, 2019 , cash segregated under federal and other regulations or requirements was $5 billion and $2 billion , respectively. Restricted cash is included in interest-bearing deposits with banks on the consolidated balance sheet. Securities segregated under federal and other regulations or requirements were $5 billion at March 31, 2020 and $1 billion at Dec. 31, 2019

Loans and asset quality

Loans and asset quality	3 Months Ended
	Mar. 31, 2020
Receivables [Abstract]
Loans and asset quality	Loans and asset quality Loans The table below provides the details of our loan portfolio and industry concentrations of credit risk at March 31, 2020 and Dec. 31, 2019 . Loans March 31, 2020 Dec. 31, 2019 (in millions) Domestic: Commercial $ 3,010 $ 1,442 Commercial real estate 6,429 5,575 Financial institutions 6,231 4,852 Lease financings 472 537 Wealth management loans and mortgages 16,128 16,050 Other residential mortgages 472 494 Overdrafts 1,851 524 Other 1,168 1,167 Margin loans 11,733 11,907 Total domestic 47,494 42,548 Foreign: Commercial 425 347 Commercial real estate 22 7 Financial institutions 7,985 7,626 Lease financings 582 576 Wealth management loans and mortgages 131 140 Other (primarily overdrafts) 4,347 2,230 Margin loans 1,382 1,479 Total foreign 14,874 12,405 Total loans (a) $ 62,368 $ 54,953 (a) Net of unearned income of $301 million at March 31, 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. Allowance for credit losses activity for the quarter ended March 31, 2020 Wealth management loans and mortgages Other residential mortgages (in millions) Commercial Commercial real estate Financial institutions Lease financings Foreign (a) Total 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 — — — — — — — — Net (charge-offs) recoveries — — — — — — — — Provision 9 118 4 10 1 (1 ) — 141 Ending balance (b) $ 26 $ 208 $ 18 $ 13 $ 9 $ 14 $ — $ 288 Allowance for: Loan losses $ 13 $ 83 $ 10 $ 13 $ 7 $ 14 $ — $ 140 Lending-related commitments 13 125 8 — 2 — — 148 Individually evaluated for impairment: Loan balance $ — $ — $ — $ — $ 18 (c) $ — $ — $ 18 Allowance for loan losses — — — — — — — — (a) The allowance related to the foreign exposure has been reclassified to financial institutions ( $10 million ), commercial ( $10 million ) and lease financings ( $4 million ). (b) Includes $12 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 Dec. 31, 2019 Wealth management loans and mortgages Other residential mortgages (in millions) Commercial Commercial real estate Financial institutions Lease financings All other Foreign Total Beginning balance $ 61 $ 77 $ 21 $ 3 $ 20 $ 14 $ — $ 28 $ 224 Charge-offs — — — — — (1 ) — — (1 ) Recoveries — — — — — 1 — — 1 Net (charge-offs) recoveries — — — — — — — — — Provision (1 ) (1 ) (1 ) — — (1 ) — (4 ) (8 ) Ending balance $ 60 $ 76 $ 20 $ 3 $ 20 $ 13 $ — $ 24 $ 216 Allowance for: Loan losses $ 11 $ 57 $ 5 $ 3 $ 18 $ 13 $ — $ 15 $ 122 Lending-related commitments 49 19 15 — 2 — — 9 94 Individually evaluated for impairment: Loan balance $ — $ — $ — $ — $ 15 $ — $ — $ — $ 15 Allowance for loan losses — — — — — — — — — Collectively evaluated for impairment: Loan balance $ 1,442 $ 5,575 $ 4,852 $ 537 $ 16,035 $ 494 $ 13,598 (a) $ 12,405 $ 54,938 Allowance for loan losses 11 57 5 3 18 13 — 15 122 (a) Includes $524 million of domestic overdrafts, $11,907 million of margin loans and $1,167 million of other loans at Dec. 31, 2019 . Allowance for credit losses activity for the quarter ended March 31, 2019 Wealth management loans and mortgages Other residential mortgages All other Foreign Total (in millions) Commercial Commercial real estate Financial institutions Lease financings Beginning balance $ 81 $ 75 $ 22 $ 5 $ 21 $ 16 $ — $ 32 $ 252 Charge-offs (11 ) — — — — — — — (11 ) Recoveries — — — — — — — — — Net recoveries (11 ) — — — — — — — (11 ) Provision 12 (1 ) 1 (1 ) — (1 ) — (3 ) 7 Ending balance $ 82 $ 74 $ 23 $ 4 $ 21 $ 15 $ — $ 29 $ 248 Allowance for: Loan losses $ 24 $ 56 $ 10 $ 4 $ 18 $ 15 $ — $ 19 $ 146 Lending-related commitments 58 18 13 — 3 — — 10 102 Individually evaluated for impairment: Loan balance $ 96 $ — $ — $ — $ 4 $ — $ — $ — $ 100 Allowance for loan losses 10 — — — — — — — 10 Collectively evaluated for impairment: Loan balance $ 1,626 $ 4,921 $ 4,652 $ 653 $ 15,724 $ 574 $ 13,913 (a) $ 11,324 $ 53,387 Allowance for loan losses 14 56 10 4 18 15 — 19 136 (a) Includes $654 million of domestic overdrafts, $12,107 million of margin loans and $1,152 million of other loans at March 31, 2019 . Nonperforming assets The table below presents our nonperforming assets. Nonperforming assets March 31, 2020 Dec. 31, 2019 Recorded investment With an allowance Without an allowance (in millions) Total Nonperforming loans: Other residential mortgages $ 60 $ — $ 60 $ 62 Wealth management loans and mortgages 9 18 27 24 Total nonperforming loans 69 18 87 86 Other assets owned 1 — 1 3 Total nonperforming assets $ 70 $ 18 $ 88 $ 89 At March 31, 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 March 31, 2020 Dec. 31, 2019 Days past due Total past due Days past due Total past due (in millions) 30-59 60-89 ≥90 30-59 60-89 ≥90 Financial institutions $ — $ — $ — $ — $ 1 $ 30 $ — $ 31 Wealth management loans and mortgages 77 1 — 78 22 5 — 27 Commercial real estate — — — — 6 12 — 18 Other residential mortgages 9 1 — 10 8 3 — 11 Total past due loans $ 86 $ 2 $ — $ 88 $ 37 $ 50 $ — $ 87 Loan modifications 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 would otherwise be treated as troubled debt restructurings (“TDRs”) and the determination that such a loan modification is a TDR. We modified loans of less than $1 million in the first quarter of 2020, first quarter of 2019 and fourth quarter of 2019 . The loans were primarily other residential loans. 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 March 31, 2020 Revolving loans Originated, at amortized cost Amortized cost Converted to term loans - Amortized cost Accrued (in millions) 1Q20 2019 2018 2017 2016 Prior to 2016 Total (a) Commercial: Investment grade $ 20 $ 286 $ 107 $ 600 $ 57 $ — $ 1,994 $ — $ 3,064 Non-investment grade 41 72 12 — 6 — 240 — 371 Total commercial 61 358 119 600 63 — 2,234 — 3,435 $ 4 Commercial real estate: Investment grade 414 1,412 1,047 624 636 640 586 — $ 5,359 Non-investment grade 15 136 213 106 313 48 232 29 1,092 Total commercial real estate 429 1,548 1,260 730 949 688 818 29 6,451 11 Financial institutions: Investment grade 49 270 133 125 14 189 11,429 — $ 12,209 Non-investment grade 15 8 — — — — 1,984 — 2,007 Total financial institutions 64 278 133 125 14 189 13,413 — 14,216 26 Wealth management loans and mortgages: Investment grade 3 83 12 178 58 94 7,049 — $ 7,477 Non-investment grade — — — — — — 132 — 132 Wealth management mortgages 208 1,139 752 1,438 1,833 3,239 41 — 8,650 Total wealth management loans and mortgages 211 1,222 764 1,616 1,891 3,333 7,222 — 16,259 38 Lease financings — 21 23 72 34 904 — — 1,054 — Other residential mortgages — — — — — 472 — — 472 2 Other loans 5 — — — — — 1,214 — 1,219 1 Margin loans 2,260 1,300 — — — — 9,555 — 13,115 12 Total loans $ 3,030 $ 4,727 $ 2,299 $ 3,143 $ 2,951 $ 5,586 $ 34,456 $ 29 $ 56,221 $ 94 (a) Excludes overdrafts of $6,147 million . Overdrafts occur on a daily basis primarily in the custody and securities clearance business and are generally repaid within two business days. 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 96% of the exposures meeting the investment grade equivalent criteria of our internal credit rating classification at March 31, 2020. In addition, 79% 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 90% 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 March 31, 2020 , less than 1% of the mortgages were past due. At March 31, 2020 , the wealth management mortgage portfolio consisted of the following geographic concentrations: California - 23% ; New York - 17% ; Massachusetts - 10% ; Florida - 8% ; and other - 42% . Lease financing At March 31, 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 $472 million at March 31, 2020 and $494 million at Dec. 31, 2019 . These loans are not typically correlated to external ratings. Included in this portfolio at March 31, 2020 were $87 million of mortgage loans purchased in 2005, 2006 and the first quarter of 2007, of which 9% of the serviced loan balance was at least 60 days delinquent. Overdrafts Overdrafts primarily relate to custody and securities clearance clients and totaled $6.1 billion at March 31, 2020 and $2.7 billion at Dec. 31, 2019 . Overdrafts occur on a daily basis primarily in the custody and securities clearance business and are generally repaid within two business days. 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 $13.1 billion of secured margin loans at March 31, 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 Reverse repurchase agreements are fully collateralized transactions. Substantially all of the collateral was high quality. At March 31, 2020 , we had $1.2 billion of reverse repos fully secured by non-agency debt securities that have experienced decreased liquidity during March 2020. The allowance for credit losses related to these assets at March 31, 2020 is $18 million

Goodwill and intangible assets

Goodwill and intangible assets	3 Months Ended
	Mar. 31, 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 Other Consolidated Balance at Dec. 31, 2019 $ 8,332 $ 9,007 $ 47 $ 17,386 Foreign currency translation (43 ) (103 ) — (146 ) Other (a) 47 — (47 ) — Balance at March 31, 2020 $ 8,336 $ 8,904 $ — $ 17,240 (a) Reflects the transfer of goodwill associated with the Capital Markets business. Goodwill by business (in millions) Investment Investment Other Consolidated Balance at Dec. 31, 2018 $ 8,333 $ 8,970 $ 47 $ 17,350 Foreign currency translation (5 ) 22 — 17 Balance at March 31, 2019 $ 8,328 $ 8,992 $ 47 $ 17,367 Intangible assets The tables below provide a breakdown of intangible assets by business. Intangible assets – net carrying amount by business (in millions) Investment Investment Other Consolidated Balance at Dec. 31, 2019 $ 678 $ 1,580 $ 849 $ 3,107 Amortization (18 ) (8 ) — (26 ) Foreign currency translation (1 ) (10 ) — (11 ) Balance at March 31, 2020 $ 659 $ 1,562 $ 849 $ 3,070 Intangible assets – net carrying amount by business (in millions) Investment Investment Other Consolidated Balance at Dec. 31, 2018 $ 758 $ 1,613 $ 849 $ 3,220 Amortization (20 ) (9 ) — (29 ) Foreign currency translation (1 ) 3 — 2 Balance at March 31, 2019 $ 737 $ 1,607 $ 849 $ 3,193 The table below provides a breakdown of intangible assets by type. Intangible assets March 31, 2020 Dec. 31, 2019 (in millions) Gross carrying amount Accumulated amortization Net carrying amount Remaining weighted- average amortization period Gross Accumulated Net carrying amount Subject to amortization: (a) Customer contracts—Investment Services $ 1,515 $ (1,227 ) $ 288 10 years $ 1,520 $ (1,214 ) $ 306 Customer relationships—Investment Management 709 (548 ) 161 11 years 712 (544 ) 168 Other 64 (18 ) 46 14 years 64 (16 ) 48 Total subject to amortization 2,288 (1,793 ) 495 10 years 2,296 (1,774 ) 522 Not subject to amortization: (b) Tradenames 1,291 N/A 1,291 N/A 1,293 N/A 1,293 Customer relationships 1,284 N/A 1,284 N/A 1,292 N/A 1,292 Total not subject to amortization 2,575 N/A 2,575 N/A 2,585 N/A 2,585 Total intangible assets $ 4,863 $ (1,793 ) $ 3,070 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 BNY Mellon’s business segments include six reporting units for which goodwill impairment testing is performed on an annual basis, in the second quarter. In the first quarter of 2020, we performed an interim goodwill impairment test of the Asset Management reporting unit, which resulted in no goodwill impairment. Intangible assets not subject to amortization are tested for impairment annually or more often if events or circumstances indicate they may be impaired.

Other assets

Other assets	3 Months Ended
	Mar. 31, 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 March 31, 2020 Dec. 31, 2019 (in millions) Fails to deliver $ 8,200 (a) $ 1,671 Corporate/bank-owned life insurance 5,240 5,219 Accounts receivable 4,649 3,802 Software 1,678 1,590 Prepaid pension assets 1,502 1,464 Renewable energy investments 1,119 1,144 Equity in a joint venture and other investments 1,091 1,102 Qualified affordable housing project investments 993 1,024 Prepaid expense 515 491 Federal Reserve Bank stock 466 466 Fair value of hedging derivatives 187 21 Seed capital 141 184 Income taxes receivable 47 388 Other (b) 1,618 1,655 Total other assets $ 27,446 $ 20,221 (a) The increase at March 31, 2020 primarily reflects higher trade volumes in the current macroeconomic environment. (b) At March 31, 2020 and Dec. 31, 2019 , other assets include $20 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 $101 million at March 31, 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. Non-readily marketable equity securities Life-to-date (in millions) 1Q20 4Q19 1Q19 Upward adjustments $ 4 $ 1 $ — $ 36 Downward adjustments — (2 ) — (4 ) Net adjustments $ 4 $ (1 ) $ — $ 32 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 March 31, 2020 and Dec. 31, 2019 . Commitments to fund future investments in qualified affordable housing projects totaled $390 million at March 31, 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 – $114 million ; 2021 – $181 million ; 2022 – $83 million ; 2023 – $6 million ; 2024 – $2 million ; and 2025 and thereafter – $4 million . Tax credits and other tax benefits recognized were $38 million in the first quarter of 2020 , $31 million in the fourth quarter of 2019 and $39 million in the first quarter of 2019 . Amortization expense included in the provision for income taxes was $31 million in the first quarter of 2020 , $24 million in the fourth quarter of 2019 and $32 million in the first quarter of 2019 Investments valued using net asset value (“NAV”) per share In our Investment 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 March 31, 2020 Dec. 31, 2019 (in millions) Fair value Unfunded commitments Fair value Unfunded commitments Seed capital (a) $ 51 $ — $ 59 $ — Private equity investments (SBICs) (b) 80 52 89 55 Other (c) 27 — 33 — Total $ 158 $ 52 $ 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 a life of six years, 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. (c) Primarily includes investments in funds that relate to deferred compensation arrangements with employees. Investments in funds can be redeemed on a quarterly basis with redemption notice periods of up to 95 days .

Contract revenue

Contract revenue	3 Months Ended
	Mar. 31, 2020
Revenue from Contract with Customer [Abstract]
Contract revenue	Contract revenue Fee revenue in Investment Services and Investment 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 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. Disaggregation of contract revenue by business segment (a) Quarter ended March 31, 2020 Dec. 31, 2019 March 31, 2019 (in millions) IS IM Other Total IS (b) IM (b) Other (b) Total IS (b) IM (b) Other (b) Total Fee revenue - contract revenue: Investment services fees: Asset servicing fees $ 1,127 $ 23 $ (11 ) $ 1,139 $ 1,117 $ 25 $ (14 ) $ 1,128 $ 1,081 $ 20 $ (8 ) $ 1,093 Clearing services fees 470 — — 470 421 — — 421 398 — — 398 Issuer services fees 263 — — 263 264 — — 264 251 — — 251 Treasury services fees 149 — — 149 148 — — 148 132 — — 132 Total investment services fees 2,009 23 (11 ) 2,021 1,950 25 (14 ) 1,961 1,862 20 (8 ) 1,874 Investment management and performance fees 5 862 (4 ) 863 5 886 (4 ) 887 4 841 (4 ) 841 Financing-related fees 28 — — 28 12 — — 12 17 — — 17 Distribution and servicing (12 ) 43 — 31 (10 ) 44 — 34 (14 ) 45 — 31 Investment and other income 72 (50 ) — 22 72 (50 ) — 22 69 (49 ) — 20 Total fee revenue - contract revenue 2,102 878 (15 ) 2,965 2,029 905 (18 ) 2,916 1,938 857 (12 ) 2,783 Fee and other revenue - not in scope of Accounting Standards Codification (“ASC”) 606 (c)(d) 334 (32 ) 45 347 207 19 812 1,038 223 12 30 265 Total fee and other revenue $ 2,436 $ 846 $ 30 $ 3,312 $ 2,236 $ 924 $ 794 $ 3,954 $ 2,161 $ 869 $ 18 $ 3,048 (a) 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. (b) Prior periods have been restated to reflect the reclassifications. See Note 19 for additional information. (c) Primarily includes foreign exchange and other trading revenue, financing-related fees, asset servicing fees, net securities gains (losses) and investment and other income (loss), all of which are accounted for using other accounting guidance. (d) The Investment Management business includes (loss) income from consolidated investment management funds, net of noncontrolling interests, of $(20) million in the first quarter of 2020 , $8 million in the fourth quarter of 2019 and $16 million in the first quarter of 2019 . IS - Investment Services segment. IM - Investment Management segment. Contract balances Our clients are billed based on fee schedules that are agreed upon in each customer contract. Receivables from customers were $2.6 billion at March 31, 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 $48 million at March 31, 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 $194 million at March 31, 2020 and $168 million at Dec. 31, 2019 . Contract liabilities are included in other liabilities on the consolidated balance sheet. Revenue recognized in the first quarter of 2020 relating to contract liabilities as of Dec. 31, 2019 was $50 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 $89 million at March 31, 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 $5 million in the first quarter of 2020 , first quarter of 2019 and fourth quarter 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 fulfillment of the performance obligation, and totaled $14 million at March 31, 2020 and $16 million at Dec. 31, 2019 . These capitalized costs are amortized on a straight-line basis over the expected contract period, which generally ranges from seven to nine years . The amortization is included in other expense on the consolidated income statement and totaled $1 million in the first quarter of 2020 , first quarter of 2019 and fourth quarter of 2019 . There were no impairments recorded on capitalized contract costs in the first quarter of 2020 . 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	3 Months Ended
	Mar. 31, 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 (in millions) March 31, 2020 Dec. 31, 2019 March 31, 2019 Interest revenue Deposits with the Federal Reserve and other central banks $ 80 $ 94 $ 139 Deposits with banks 58 65 63 Federal funds sold and securities purchased under resale agreements 396 452 474 Margin loans 87 96 135 Non-margin loans 309 328 355 Securities: Taxable 594 639 706 Exempt from federal income taxes 6 7 12 Total securities 600 646 718 Trading securities 40 40 36 Total interest revenue 1,570 1,721 1,920 Interest expense Deposits 240 334 391 Federal funds purchased and securities sold under repurchase agreements 275 291 331 Trading liabilities 7 9 7 Other borrowed funds 4 5 24 Commercial paper 6 7 8 Customer payables 30 40 70 Long-term debt 194 220 248 Total interest expense 756 906 1,079 Net interest revenue 814 815 841 Provision for credit losses 169 (8 ) 7 Net interest revenue after provision for credit losses $ 645 $ 823 $ 834

Employee benefit plans

Employee benefit plans	3 Months Ended
	Mar. 31, 2020
Defined Benefit Plan [Abstract]
Employee benefit plans	Employee benefit plans The components of net periodic benefit (credit) cost are presented below. The service cost component is reflected in staff expense, whereas the remaining components are reflected in other expense. Net periodic benefit (credit) cost Quarter ended March 31, 2020 March 31, 2019 (in millions) Domestic pension benefits Foreign pension benefits Health care benefits Domestic pension benefits Foreign pension benefits Health care benefits Service cost $ — $ 3 $ — $ — $ 3 $ — Interest cost 39 7 1 44 8 2 Expected return on assets (80 ) (10 ) (1 ) (84 ) (11 ) (2 ) Other 22 3 (1 ) 13 — (1 ) Net periodic benefit (credit) cost $ (19 ) $ 3 $ (1 ) $ (27 ) $ — $ (1 )

Income taxes

Income taxes	3 Months Ended
	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Income taxes	Income taxes BNY Mellon recorded an income tax provision of $265 million ( 21.6% effective tax rate) in the first quarter of 2020 , $237 million ( 19.9% effective tax rate) in the first quarter of 2019 and $373 million ( 20.5% effective tax rate) in the fourth quarter of 2019 . Our total tax reserves as of March 31, 2020 were $176 million compared with $173 million at Dec. 31, 2019 . If these tax reserves were unnecessary, $176 million would affect the effective tax rate in future periods. We recognize accrued interest and penalties, if applicable, related to income taxes in income tax expense. Included in the balance sheet at March 31, 2020 is accrued interest, where applicable, of $35 million . The additional tax expense related to interest for the first quarter of 2020 was $4 million , compared with $2 million for the first quarter of 2019 . It is reasonably possible the total reserve for uncertain tax positions could decrease within the next 12 months by approximately $100 million as a result of adjustments related to tax years that are still subject to examination. Our federal income tax returns are closed to examination through 2013. Our New York State, New York City and UK income tax returns are closed to examination through 2012.

Variable interest entities and

Variable interest entities and securitization	3 Months Ended
	Mar. 31, 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 March 31, 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 March 31, 2020 Dec. 31, 2019 (in millions) Investment Management funds Securitization Total consolidated investments Investment Management funds Securitization Total consolidated investments Trading assets $ 215 $ 400 $ 615 $ 229 $ 400 $ 629 Other assets 14 — 14 16 — 16 Total assets $ 229 (a) $ 400 $ 629 $ 245 (b) $ 400 $ 645 Other liabilities $ 1 $ 397 $ 398 $ 1 $ 387 $ 388 Total liabilities $ 1 (a) $ 397 $ 398 $ 1 (b) $ 387 $ 388 Nonredeemable noncontrolling interests $ 94 (a) $ — $ 94 $ 102 (b) $ — $ 102 (a) Includes voting model entities (“VMEs”) with assets of $44 million , liabilities of $1 million and nonredeemable noncontrolling interests of less than $1 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 March 31, 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 March 31, 2020 Dec. 31, 2019 (in millions) Assets Liabilities Maximum loss exposure Assets Liabilities Maximum loss exposure Securities - Available-for-sale (a) $ 180 $ — $ 180 $ 208 $ — $ 208 Other 2,287 390 2,677 2,400 422 2,822 (a) Includes investments in the Company’s sponsored CLOs.

Preferred stock

Preferred stock	3 Months Ended
	Mar. 31, 2020
Stockholders' Equity Note [Abstract]
Preferred stock	Preferred stock BNY Mellon has 100 million authorized shares of preferred stock with a par value of $0.01 per share. The following table summarizes BNY Mellon’s preferred stock issued and outstanding at March 31, 2020 and Dec. 31, 2019 . Preferred stock summary (a) Total shares issued and outstanding Carrying value (b) (in millions) March 31, 2020 Dec. 31, 2019 March 31, 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 and including 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 and including Sept. 20, 2026, then a floating rate equal to the three-month LIBOR plus 3.131% 10,000 10,000 990 990 Total 35,826 35,826 $ 3,542 $ 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 and Series F preferred stock is recorded net of issuance costs. The table below presents the dividends paid on our preferred stock. Preferred dividends paid (dollars in millions, except per share amounts) Depositary shares per share 1Q20 4Q19 1Q19 Per share Total Per share Total Per share Total Series A 100 (a) $ 1,011.11 $ 5 $ 1,011.11 $ 5 $ 1,000.00 $ 5 Series C 4,000 1,300.00 8 1,300.00 8 1,300.00 8 Series D 100 N/A — 2,250.00 11 N/A — Series E 100 N/A — 2,475.00 25 N/A — Series F 100 2,312.50 23 N/A — 2,312.50 23 Total $ 36 $ 49 $ 36 (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)	3 Months Ended
	Mar. 31, 2020
Equity [Abstract]
Other comprehensive income (loss)	Other comprehensive income (loss) Components of other comprehensive income (loss) Quarter ended March 31, 2020 Dec. 31, 2019 March 31, 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) $ (265 ) $ (104 ) $ (369 ) $ 292 $ 96 $ 388 $ 27 $ 2 $ 29 Total foreign currency translation (265 ) (104 ) (369 ) 292 96 388 27 2 29 Unrealized gain (loss) on assets available-for-sale: Unrealized gain (loss) arising during period 243 (60 ) 183 (114 ) 37 (77 ) 322 (83 ) 239 Reclassification adjustment (b) (9 ) 2 (7 ) 25 (6 ) 19 (1 ) — (1 ) Net unrealized gain (loss) on assets available-for-sale 234 (58 ) 176 (89 ) 31 (58 ) 321 (83 ) 238 Defined benefit plans: Prior service cost arising during the period — — — (1 ) — (1 ) — — — Net (loss) gain arising during the period — — — (110 ) 32 (78 ) (11 ) 2 (9 ) Amortization of prior service credit, net loss and initial obligation included in net periodic benefit cost (b) 24 (6 ) 18 14 (10 ) 4 13 (3 ) 10 Total defined benefit plans 24 (6 ) 18 (97 ) 22 (75 ) 2 (1 ) 1 Unrealized gain (loss) on cash flow hedges: Unrealized hedge (loss) gain arising during period (13 ) 3 (10 ) 17 (5 ) 12 6 (4 ) 2 Reclassification of net loss (gain) to net income: Interest rate contracts - interest expense — — — (8 ) 2 (6 ) — — — Foreign exchange (“FX”) contracts - staff expense (1 ) — (1 ) (2 ) — (2 ) 1 2 3 Total reclassifications to net income (1 ) — (1 ) (10 ) 2 (8 ) 1 2 3 Net unrealized (loss) gain on cash flow hedges (14 ) 3 (11 ) 7 (3 ) 4 7 (2 ) 5 Total other comprehensive (loss) income $ (21 ) $ (165 ) $ (186 ) $ 113 $ 146 $ 259 $ 357 $ (84 ) $ 273 (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	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Fair value measurement	Fair value measurement Fair value is defined as the price that would be received to sell an asset, or paid to transfer a liability, in an orderly transaction between market participants at the measurement date. A three-level hierarchy for fair value measurements is utilized based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. BNY Mellon’s own creditworthiness is considered when valuing liabilities. See Note 20 of the Notes to Consolidated Financial Statements in our 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 March 31, 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 March 31, 2020 Total carrying (dollars in millions) Level 1 Level 2 Level 3 Netting (a) Available-for-sale securities: Agency RMBS $ — $ 26,691 $ — $ — $ 26,691 U.S. Treasury 23,081 — — — 23,081 Sovereign debt/sovereign guaranteed 7,070 5,840 — — 12,910 Agency commercial MBS — 9,805 — — 9,805 Foreign covered bonds — 5,272 — — 5,272 Supranational — 4,348 — — 4,348 CLOs — 4,098 — — 4,098 Commercial paper/CDs — 2,814 — — 2,814 Foreign government agencies — 2,764 — — 2,764 Non-agency commercial MBS — 2,473 — — 2,473 Other ABS — 2,220 — — 2,220 U.S. government agencies — 2,213 — — 2,213 Non-agency RMBS (b) — 1,475 — — 1,475 State and political subdivisions — 985 — — 985 Corporate bonds — 818 — — 818 Other debt securities — 1 — — 1 Total available-for-sale securities 30,151 71,817 — — 101,968 Trading assets: Debt instruments 1,812 3,179 — — 4,991 Equity instruments (c) 2,231 — — — 2,231 Derivative assets not designated as hedging: Interest rate 8 6,035 — (3,047 ) 2,996 Foreign exchange — 9,964 — (7,272 ) 2,692 Equity and other contracts 6 11 — (9 ) 8 Total derivative assets not designated as hedging 14 16,010 — (10,328 ) 5,696 Total trading assets 4,057 19,189 — (10,328 ) 12,918 Other assets: Derivative assets designated as hedging: Foreign exchange — 187 — — 187 Total derivative assets designated as hedging — 187 — — 187 Other assets (d) 46 136 — — 182 Assets measured at NAV (d) 158 Subtotal assets of operations at fair value 34,254 91,329 — (10,328 ) 115,413 Percentage of assets of operations prior to netting 27 % 73 % — % Assets of consolidated investment management funds 188 41 — — 229 Total assets $ 34,442 $ 91,370 $ — $ (10,328 ) $ 115,642 Percentage of total assets prior to netting 27 % 73 % — % Liabilities measured at fair value on a recurring basis at March 31, 2020 Total carrying (dollars in millions) Level 1 Level 2 Level 3 Netting (a) Trading liabilities: Debt instruments $ 1,101 $ 143 $ — $ — $ 1,244 Equity instruments 64 — — — 64 Derivative liabilities not designated as hedging: Interest rate 14 5,261 — (3,479 ) 1,796 Foreign exchange — 11,854 — (8,382 ) 3,472 Equity and other contracts 1 51 — (3 ) 49 Total derivative liabilities not designated as hedging 15 17,166 — (11,864 ) 5,317 Total trading liabilities 1,180 17,309 — (11,864 ) 6,625 Long-term debt (c) — 397 — — 397 Other liabilities – derivative liabilities designated as hedging: Interest rate — 927 — — 927 Foreign exchange — 46 — — 46 Total other liabilities – derivative liabilities designated as hedging — 973 — — 973 Subtotal liabilities of operations at fair value 1,180 18,679 — (11,864 ) 7,995 Percentage of liabilities of operations prior to netting 6 % 94 % — % Liabilities of consolidated investment management funds — 1 — — 1 Total liabilities $ 1,180 $ 18,680 $ — $ (11,864 ) $ 7,996 Percentage of total liabilities prior to netting 6 % 94 % — % (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 $535 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 value (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 value (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 March 31, 2020 Dec. 31, 2019 Total carrying value Ratings (a) Total carrying value Ratings (a) AAA/ AA- A+/ A- BBB+/ BBB- BB+ and lower AAA/ AA- A+/ A- BBB+/ BBB- BB+ and lower (dollars in millions) (b) (b) Non-agency RMBS (c) , originated in: 2007-2020 $ 826 79 % 1 % — % 20 % $ 464 55 % 1 % — % 44 % 2006 244 — 22 — 78 291 — 21 — 79 2005 258 5 2 8 85 305 5 2 8 85 2004 and earlier 147 22 23 6 49 173 22 24 4 50 Total non-agency RMBS $ 1,475 48 % 6 % 2 % 44 % $ 1,233 25 % 9 % 3 % 63 % Non-agency commercial MBS originated in: 2009-2020 $ 2,473 100 % — % — % — % $ 2,178 98 % 2 % — % — % Foreign covered bonds: Canada $ 2,207 100 % — % — % — % $ 1,798 100 % — % — % — % UK 1,109 100 — — — 984 100 — — — Australia 605 100 — — — 431 100 — — — Norway 495 100 — — — 287 100 — — — Germany 465 100 — — — 357 100 — — — Other 391 100 — — — 340 100 — — — Total foreign covered bonds $ 5,272 100 % — % — % — % $ 4,197 100 % — % — % — % Sovereign debt/sovereign guaranteed: UK $ 2,971 100 % — % — % — % $ 3,318 100 % — % — % — % Germany 2,168 100 — — — 1,997 100 — — — France 1,577 100 — — — 1,272 100 — — — Spain 1,546 — 4 96 — 1,453 — 6 94 — Italy 1,390 — — 100 — 1,260 — — 100 — Singapore 768 100 — — — 742 100 — — — Ireland 462 — 100 — — 301 — 100 — — Netherlands 387 100 — — — 791 100 — — — Austria 347 100 — — — 240 100 — — — Canada 345 100 — — — 271 100 — — — Hong Kong 294 100 — — — 411 100 — — — Other (d) 655 39 39 — 22 590 29 48 — 23 Total sovereign debt/sovereign guaranteed $ 12,910 71 % 6 % 22 % 1 % $ 12,646 73 % 5 % 21 % 1 % Foreign government agencies: Germany $ 1,161 100 % — % — % — % $ 1,131 100 % — % — % — % Netherlands 632 100 — — — 678 100 — — — Sweden 250 100 — — — 202 100 — — — Finland 240 100 — — — 245 100 — — — Other 481 72 28 — — 387 67 33 — — Total foreign government agencies $ 2,764 95 % 5 % — % — % $ 2,643 95 % 5 % — % — % (a) Represents ratings by S&P or the equivalent. (b) At March 31, 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 $535 million at March 31, 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 $113 million at March 31, 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 March 31, 2020 and Dec. 31, 2019 . Assets measured at fair value on a nonrecurring basis March 31, 2020 Dec. 31, 2019 Total carrying value Total carrying value (in millions) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Loans (a) $ — $ 56 $ — $ 56 $ — $ 58 $ — $ 58 Other assets (b) — 102 — 102 — 64 — 64 Total assets at fair value on a nonrecurring basis $ — $ 158 $ — $ 158 $ — $ 122 $ — $ 122 (a) The fair value of these loans decreased less than $1 million in the first 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 March 31, 2020 and Dec. 31, 2019 , by caption on the consolidated balance sheet and by the valuation hierarchy. Summary of financial instruments March 31, 2020 (in millions) Level 1 Level 2 Level 3 Total Carrying Assets: Interest-bearing deposits with the Federal Reserve and other central banks $ — $ 146,535 $ — $ 146,535 $ 146,535 Interest-bearing deposits with banks — 22,689 — 22,689 22,672 Federal funds sold and securities purchased under resale agreements — 27,363 — 27,363 27,363 Securities held-to-maturity 4,014 34,404 — 38,418 37,305 Loans (a) — 61,482 — 61,482 61,174 Other financial assets 5,091 1,198 — 6,289 6,289 Total $ 9,105 $ 293,671 $ — $ 302,776 $ 301,338 Liabilities: Noninterest-bearing deposits $ — $ 96,600 $ — $ 96,600 $ 96,600 Interest-bearing deposits — 239,459 — 239,459 240,117 Federal funds purchased and securities sold under repurchase agreements — 13,128 — 13,128 13,128 Payables to customers and broker-dealers — 24,016 — 24,016 24,016 Commercial paper — 1,121 — 1,121 1,121 Borrowings — 1,767 — 1,767 1,767 Long-term debt — 27,521 — 27,521 27,097 Total $ — $ 403,612 $ — $ 403,612 $ 403,846 (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	3 Months Ended
	Mar. 31, 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 March 31, 2020 Dec. 31, 2019 (in millions) Assets of consolidated investment management funds: Trading assets $ 215 $ 229 Other assets 14 16 Total assets of consolidated investment management funds $ 229 $ 245 Liabilities of consolidated investment management funds: Other liabilities 1 1 Total liabilities of consolidated investment management funds $ 1 $ 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 $397 million at March 31, 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) 1Q20 4Q19 1Q19 Foreign exchange and other trading revenue $ (10 ) $ (1 ) $ (5 ) (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	3 Months Ended
	Mar. 31, 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 first 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 and foreign exchange rate changes. The available-for-sale securities hedged consist of U.S. Treasury bonds, agency and non-agency commercial MBS, sovereign debt, corporate bonds and covered bonds. At March 31, 2020 , $16.5 billion par value of available-for-sale securities were hedged with interest rate swaps designated as fair value hedges that had notional values of $16.5 billion . The fixed rate long-term debt instruments hedged generally have original maturities of five to 30 years . In fair value hedging relationships, debt is hedged with “receive fixed rate, pay variable rate” swaps. At March 31, 2020 , $13.9 billion par value of debt was hedged with interest rate swaps designated as fair value hedges that had notional values of $13.9 billion . 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 12 months or less as cash flow hedges to hedge our foreign exchange exposure to currencies such as, Indian rupee, British pound, 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 March 31, 2020 , the hedged forecasted foreign currency transactions and designated forward foreign exchange contract hedges were $291 million (notional), with a pre-tax loss of $10 million recorded in accumulated OCI. This loss will be reclassified to earnings over the next 12 months . Forward foreign exchange contracts are also used to hedge the value of our net investments in foreign subsidiaries. These forward foreign exchange contracts have maturities of less than one year . The derivatives employed are designated as hedges of changes in value of our foreign investments due to exchange rates. The change in fair market value of these forward foreign exchange contracts is reported within foreign currency translation adjustments in shareholders’ equity, net of tax. At March 31, 2020 , forward foreign exchange contracts with notional amounts totaling $7.2 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 March 31, 2020 , had a combined U.S. dollar equivalent carrying value of $168 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 gains (losses) 1Q20 4Q19 1Q19 Interest rate fair value hedges of available-for-sale securities Derivative Interest revenue $ (1,033 ) $ 324 $ (383 ) Hedged item Interest revenue 1,011 (311 ) 376 Interest rate fair value hedges of long-term debt Derivative Interest expense 714 (145 ) 185 Hedged item Interest expense (708 ) 144 (184 ) Foreign exchange fair value hedges of available-for-sale securities Derivative (a) Other revenue 7 6 6 Hedged item Other revenue (7 ) (6 ) (5 ) Cash flow hedge of interest rate risk Gain reclassified from OCI into income Interest expense — 8 — Cash flow hedges of forecasted FX exposures Gain (loss) reclassified from OCI into income Staff expense 1 2 (1 ) (Loss) gain recognized in the consolidated income statement due to fair value and cash flow hedging relationships $ (15 ) $ 22 $ (6 ) (a) Includes gains of less than $1 million in the first quarter of 2020 and the fourth quarter of 2019 and a gain of $1 million in the first quarter of 2019 associated with the amortization of the excluded component. At March 31, 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) Gain or (loss) recognized in accumulated OCI on derivatives Gain or (loss) reclassified from accumulated OCI into income Derivatives in net investment hedging relationships Location of gain or (loss) reclassified from accumulated OCI into income 1Q20 4Q19 1Q19 1Q20 4Q19 1Q19 FX contracts $ 437 $ (341 ) $ (6 ) 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 asset or liability Hedge accounting basis adjustment increase (decrease) (a) (in millions) March 31, 2020 Dec. 31, 2019 March 31, 2020 Dec. 31, 2019 Available-for-sale securities (b)(c) $ 16,559 $ 13,792 $ 1,846 $ 687 Long-term debt $ 14,907 $ 13,945 $ 849 $ 116 (a) Includes $210 million and $53 million of basis adjustment increases on discontinued hedges associated with available-for-sale securities at March 31, 2020 and Dec. 31, 2019 , respectively, and $178 million and $200 million of basis adjustment decreases on discontinued hedges associated with long-term debt at March 31, 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 $- million at March 31, 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 March 31, 2020 and Dec. 31, 2019 . Impact of derivative instruments on the balance sheet Notional value Asset derivatives fair value Liability derivatives fair value March 31, 2020 Dec. 31, 2019 March 31, 2020 Dec. 31, 2019 March 31, 2020 Dec. 31, 2019 (in millions) Derivatives designated as hedging instruments: (a)(b) Interest rate contracts $ 30,356 $ 28,365 $ — $ — $ 927 $ 350 Foreign exchange contracts 7,524 8,390 187 21 46 257 Total derivatives designated as hedging instruments $ 187 $ 21 $ 973 $ 607 Derivatives not designated as hedging instruments: (b)(c) Interest rate contracts $ 273,595 $ 306,790 $ 6,043 $ 3,690 $ 5,275 $ 3,250 Foreign exchange contracts 924,891 848,961 9,964 5,331 11,854 5,340 Equity contracts 1,269 3,189 15 19 51 5 Credit contracts 165 165 2 — 1 4 Total derivatives not designated as hedging instruments $ 16,024 $ 9,040 $ 17,181 $ 8,599 Total derivatives fair value (d) $ 16,211 $ 9,061 $ 18,154 $ 9,206 Effect of master netting agreements (e) (10,328 ) (5,819 ) (11,864 ) (5,415 ) Fair value after effect of master netting agreements $ 5,883 $ 3,242 $ 6,290 $ 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 $1,320 million and $2,856 million , respectively, at March 31, 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) 1Q20 4Q19 1Q19 Foreign exchange $ 253 $ 138 $ 160 Other trading revenue 66 30 10 Total foreign exchange and other trading revenue $ 319 $ 168 $ 170 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 loss of $41 million in the first quarter of 2020 and gains of $18 million in the first quarter of 2019 and $13 million in the fourth quarter 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-day holding period, utilizes a 99% confidence level and incorporates non-linear product characteristics. The VaR model is one of several statistical models used to develop economic capital results, which are allocated to lines of business for computing risk-adjusted performance. VaR methodology does not evaluate risk attributable to extraordinary financial, economic or other occurrences. As a result, the risk assessment process includes a number of stress scenarios based upon the risk factors in the portfolio and management’s assessment of market conditions. Additional stress scenarios based upon historical market events are also performed. Stress tests may incorporate the impact of reduced market liquidity and the breakdown of historically observed correlations and extreme scenarios. VaR and other statistical measures, stress testing and sensitivity analysis are incorporated into other risk management materials. Counterparty credit risk and collateral We assess the credit risk of our counterparties through regular examination of their financial statements, confidential communication with the management of those counterparties and regular monitoring of publicly available credit rating information. This and other information is used to develop proprietary credit rating metrics used to assess credit quality. Collateral requirements are determined after a comprehensive review of the credit quality of each counterparty. Collateral is generally held or pledged in the form of cash and/or highly liquid government securities. Collateral requirements are monitored and adjusted daily. Additional disclosures concerning derivative financial instruments are provided in Note 15. Disclosure of contingent features in over-the-counter (“OTC”) derivative instruments Certain OTC derivative contracts and/or collateral agreements contain credit-risk contingent features triggered upon a rating downgrade in which the counterparty has the right to request additional collateral or the right to terminate the contracts in a net liability position. The following table shows the aggregate fair value of OTC derivative contracts in net liability positions that contained credit-risk contingent features and the value of collateral that has been posted. March 31, 2020 Dec. 31, 2019 (in millions) Aggregate fair value of OTC derivatives in net liability positions (a) $ 8,050 $ 3,442 Collateral posted $ 8,299 $ 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) March 31, 2020 Dec. 31, 2019 (in millions) If The Bank of New York Mellon’s rating changed to: (b) A3/A- $ 106 $ 56 Baa2/BBB $ 1,213 $ 608 Ba1/BB+ $ 4,766 $ 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 rating by Moody’s/S&P. If The Bank of New York Mellon’s debt rating had fallen below investment grade on March 31, 2020 and Dec. 31, 2019 , existing collateral arrangements would have required us to post additional collateral of $30 million and $63 million , respectively. Offsetting assets and liabilities The following tables present derivative and financial instruments and their related offsets. There were no derivative instruments or financial instruments subject to a legally enforceable netting agreement for which we are not currently netting. Offsetting of derivative assets and financial assets at March 31, 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 $ 4,103 $ 3,047 $ 1,056 $ 369 $ — $ 687 Foreign exchange contracts 8,984 7,272 1,712 132 — 1,580 Equity and other contracts 15 9 6 — — 6 Total derivatives subject to netting arrangements 13,102 10,328 2,774 501 — 2,273 Total derivatives not subject to netting arrangements 3,109 — 3,109 — — 3,109 Total derivatives 16,211 10,328 5,883 501 — 5,382 Reverse repurchase agreements 97,971 80,203 (b) 17,768 17,759 — 9 Securities borrowing 9,613 — 9,613 9,055 — 558 Total $ 123,795 $ 90,531 $ 33,264 $ 27,315 $ — $ 5,949 (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 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 $ 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 March 31, 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 $ 6,181 $ 3,479 $ 2,702 $ 1,452 $ — $ 1,250 Foreign exchange contracts 10,705 8,382 2,323 545 — 1,778 Equity and other contracts 27 3 24 — — 24 Total derivatives subject to netting arrangements 16,913 11,864 5,049 1,997 — 3,052 Total derivatives not subject to netting arrangements 1,241 — 1,241 — — 1,241 Total derivatives 18,154 11,864 6,290 1,997 — 4,293 Repurchase agreements 92,057 80,203 (b) 11,854 11,823 — 31 Securities lending 750 — 750 717 — 33 Total $ 110,961 $ 92,067 $ 18,894 $ 14,537 $ — $ 4,357 (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 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 $ 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 March 31, 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 $ 82,520 $ — $ — $ 82,520 $ 94,788 $ 10 $ — $ 94,798 U.S. government agencies 633 — 10 643 594 16 — 610 Agency RMBS 3,794 — 77 3,871 4,234 774 — 5,008 Corporate bonds 542 — 1,280 1,822 266 236 1,617 2,119 Other debt securities 527 681 1,011 2,219 40 188 1,079 1,307 Equity securities 215 — 767 982 31 99 479 609 Total $ 88,231 $ 681 $ 3,145 $ 92,057 $ 99,953 $ 1,323 $ 3,175 $ 104,451 Securities lending: U.S. government agencies $ 7 $ — $ — $ 7 $ 19 $ — $ — $ 19 Other debt securities 196 — — 196 201 — — 201 Equity securities 547 — — 547 498 — — 498 Total $ 750 $ — $ — $ 750 $ 718 $ — $ — $ 718 Total borrowings $ 88,981 $ 681 $ 3,145 $ 92,807 $ 100,671 $ 1,323 $ 3,175 $ 105,169 BNY Mellon’s repurchase agreements and securities lending transactions primarily encounter risk associated with liquidity. We are required to pledge collateral based on predetermined terms within the agreements. If we were to experience a decline in the fair value of the collateral pledged for these transactions, we could be required to provide additional collateral to the counterparty, therefore decreasing the amount of assets available for other liquidity needs that may arise. BNY Mellon also offers tri-party collateral agency services in the tri-party repo market where we are exposed to credit risk. In order to mitigate this risk, we require dealers to fully secure intraday credit.

Commitments and contingent liab

Commitments and contingent liabilities	3 Months Ended
	Mar. 31, 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 March 31, 2020 Dec. 31, 2019 (in millions) Lending commitments $ 47,732 $ 49,119 Standby letters of credit (“SBLC”) (a) 2,328 2,298 Commercial letters of credit 113 74 Securities lending indemnifications (b)(c) 421,691 408,378 (a) Net of participations totaling $146 million at March 31, 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 $56 billion at March 31, 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 $38 billion at March 31, 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: $32.0 billion in less than one year, $15.4 billion in one to five years and $314 million over five years. SBLCs principally support obligations of corporate clients and were collateralized with cash and securities of $186 million at March 31, 2020 and $184 million at Dec. 31, 2019 . At March 31, 2020 , $1.7 billion of the SBLCs will expire within one year, $677 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 March 31, 2020 Dec. 31, 2019 Investment grade 91 % 90 % Non-investment grade 9 % 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 $113 million at March 31, 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 $148 million at March 31, 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 $443 billion at March 31, 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 March 31, 2020 and Dec. 31, 2019 , $56 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 $60 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 March 31, 2020 , we had no unsettled repurchase agreements and $28.3 billion of unsettled reverse repurchase agreements which all settled the following business day. Industry concentrations We have significant industry concentrations related to credit exposure at March 31, 2020 . The tables below present our credit exposure in the financial institutions and commercial portfolios. Financial institutions portfolio exposure (in billions) March 31, 2020 Loans Unfunded commitments Total exposure Securities industry $ 4.2 $ 24.5 $ 28.7 Banks 7.5 1.1 8.6 Asset managers 1.3 6.5 7.8 Insurance 0.3 2.4 2.7 Government 0.1 0.2 0.3 Other 0.8 0.6 1.4 Total $ 14.2 $ 35.3 $ 49.5 Commercial portfolio exposure (in billions) March 31, 2020 Loans Unfunded commitments Total exposure Manufacturing $ 1.4 $ 3.7 $ 5.1 Services and other 1.3 2.9 4.2 Energy and utilities 0.7 3.5 4.2 Media and telecom — 0.9 0.9 Total $ 3.4 $ 11.0 $ 14.4 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 March 31, 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 March 31, 2020 and Dec. 31, 2019 , we have not recorded 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. Four actions commenced in August 2014, December 2014, December 2015, and February 2017 are pending in New York federal court; one action commenced in November 2011 is pending in the Court of Appeals for the Tenth Circuit; and one action commenced in May 2016 is pending in New York state court. 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 (“SIB”), 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 (“SEC”) 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 of 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. Financial Industry Regulatory Authority, Inc. (“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., 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, 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 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 Ativos, alleging liability for losses in another fund for which DTVM was administrator and Ativos was manager. Brazilian Silverado Litigation DTVM acts as administrator for the Fundo de Investimento em Direitos Creditórios Multisetorial Silverado Maximum (“Silverado Maximum Fund”), which invests in commercial credit receivables. On June 2, 2016, the Silverado Maximum Fund sued DTVM in its capacity as administrator, along with Deutsche Bank S.A. - Banco Alemão in its capacity as custodian and Silverado Gestão e Investimentos Ltda. in its capacity as investment manager. The Fund alleges that each of the defendants failed to fulfill its respective duty, and caused losses to the Fund for which the defendants are jointly and severally liable. 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.

Lines of business

Lines of business	3 Months Ended
	Mar. 31, 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. 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. This activity is offset 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 have been restated for both reclassifications. The results are also subject to refinements in revenue and expense allocation methodologies, which are typically reflected on a prospective basis. 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 includes 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 March 31, 2020 Investment Investment Other Consolidated (dollars in millions) Total fee and other revenue $ 2,436 $ 846 (a) $ 30 $ 3,312 (a) Net interest revenue (expense) 806 52 (44 ) 814 Total revenue (loss) 3,242 898 (a) (14 ) 4,126 (a) Provision for credit losses 149 9 11 169 Noninterest expense 1,987 695 30 2,712 Income (loss) before income taxes $ 1,106 $ 194 (a) $ (55 ) $ 1,245 (a) Pre-tax operating margin (b) 34 % 22 % N/M 30 % Average assets $ 304,089 $ 30,543 $ 50,646 $ 385,278 (a) Total fee and other revenue includes net loss from consolidated investment management funds of $20 million , representing $38 million of losses and a loss attributable to noncontrolling interests of $18 million . Total revenue and income before income taxes are net of a loss attributable to noncontrolling interests of $18 million . (b) Income before income taxes divided by total revenue. N/M - Not meaningful. For the quarter ended Dec. 31, 2019 Investment (a) Investment (a) Other (a) Consolidated (dollars in millions) Total fee and other revenue $ 2,236 $ 924 (b) $ 794 $ 3,954 (b) Net interest revenue (expense) 778 47 (10 ) 815 Total revenue 3,014 971 (b) 784 4,769 (b) Provision for credit losses (5 ) — (3 ) (8 ) Noninterest expense 2,179 731 54 2,964 Income (loss) before income taxes $ 840 $ 240 (b) $ 733 $ 1,813 (b) Pre-tax operating margin (c) 28 % 25 % N/M 38 % Average assets $ 278,098 $ 28,481 $ 47,762 $ 354,341 (a) Prior periods have been restated to reflect the reclassifications. (b) Total fee and other revenue includes net income from consolidated investment management funds of $8 million , representing $17 million of income and noncontrolling interests of $9 million . Total revenue and income before income taxes are net of noncontrolling interests of $9 million . (c) Income before income taxes divided by total revenue. N/M - Not meaningful. For the quarter ended March 31, 2019 Investment (a) Investment (a) Other (a) Consolidated (dollars in millions) Total fee and other revenue $ 2,161 $ 869 (b) $ 18 $ 3,048 (b) Net interest revenue (expense) 804 67 (30 ) 841 Total revenue (loss) 2,965 936 (b) (12 ) 3,889 (b) Provision for credit losses 8 1 (2 ) 7 Noninterest expense 1,981 669 49 2,699 Income (loss) before income taxes $ 976 $ 266 (b) $ (59 ) $ 1,183 (b) Pre-tax operating margin (c) 33 % 28 % N/M 31 % Average assets $ 256,034 $ 31,857 $ 48,274 $ 336,165 (a) Prior periods have been restated to reflect the reclassifications. (b) Total fee and other revenue includes net income from consolidated investment management funds of $16 million , representing $26 million of income and noncontrolling interests of $10 million . Total revenue and income before income taxes are net of noncontrolling interests of $10 million . (c) Income before income taxes divided by total revenue. N/M - Not meaningful.

Supplemental information to the

Supplemental information to the Consolidated Statement of Cash Flows	3 Months Ended
	Mar. 31, 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 Three months ended March 31, (in millions) 2020 2019 Change in assets of consolidated investment management funds $ 16 $ 11 Change in liabilities of consolidated investment management funds — 1 Change in nonredeemable noncontrolling interests of consolidated investment management funds 8 21 Securities purchased not settled 1,667 1,407 Securities matured not settled 9 680 Premises and equipment/capitalized software funded by finance lease obligations — 13 Premises and equipment/operating lease obligations 15 1,281 (a) Investment redemptions not settled 37 — (a) Includes $1,244 million related to the adoption of ASU 2016-02, Leases, and $37 million related to new or modified leases.

Basis of presentation (Policies

Basis of presentation (Policies)	3 Months Ended
	Mar. 31, 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 estimates
Fair value measurement	Fair value measurement Fair value is defined as the price that would be received to sell an asset, or paid to transfer a liability, in an orderly transaction between market participants at the measurement date. A three-level hierarchy for fair value measurements is utilized based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. BNY Mellon’s own creditworthiness is considered when valuing liabilities. See Note 20 of the Notes to Consolidated Financial Statements in our 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 March 31, 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.

Accounting changes and new ac_2

Accounting changes and new accounting guidance (Policies)	3 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
Loans	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	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. The Coronavirus Aid, Relief, and Economic Security Act (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 would otherwise be treated as TDRs and the determination that such a loan modification is a TDR.
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 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	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 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 balances related to these instruments is presented in total with other interest-bearing instruments in the consolidated balance sheet. Accrued interest 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 most recent reporting period and did not own such assets as of March 31, 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 risks. Once determined in the aggregate, our qualitative allowance is then allocated to each of our financial instrument portfolios except for debt securities and those instruments carried in other assets based on the respective instruments’ quantitative allowance balances. The allocation of this additional allowance for credit losses is inherently judgmental, and the entire allowance for credit losses is available to absorb credit losses regardless of the nature of the loss.

Accounting changes and new ac_3

Accounting changes and new accounting guidance (Tables)	3 Months Ended
	Mar. 31, 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)	3 Months Ended
	Mar. 31, 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 March 31, 2020 and Dec. 31, 2019 . Securities at March 31, 2020 Gross unrealized Fair value Amortized cost (in millions) Gains Losses Available-for-sale: Agency RMBS $ 26,484 $ 426 $ 219 $ 26,691 U.S. Treasury 21,430 1,651 — 23,081 Sovereign debt/sovereign guaranteed 12,791 128 9 12,910 Agency commercial mortgage-backed securities (“MBS”) 9,315 510 20 9,805 Foreign covered bonds 5,284 24 36 5,272 Supranational 4,316 38 6 4,348 Collateralized loan obligations (“CLOs”) 4,341 1 244 4,098 Commercial paper/certificates of deposit (“CDs”) 2,813 3 2 2,814 Foreign government agencies 2,736 31 3 2,764 Non-agency commercial MBS 2,501 35 63 2,473 Other asset-backed securities (“ABS”) 2,257 6 43 2,220 U.S. government agencies 2,059 156 2 2,213 Non-agency RMBS (a) 1,404 114 43 1,475 State and political subdivisions 967 20 2 985 Corporate bonds 804 16 2 818 Other debt securities 1 — — 1 Total securities available-for-sale (b)(c) $ 99,503 $ 3,159 $ 694 $ 101,968 Held-to-maturity: Agency RMBS $ 29,518 $ 874 $ 5 $ 30,387 U.S. Treasury 2,937 121 — 3,058 Agency commercial MBS 1,868 84 — 1,952 U.S. government agencies 1,244 7 3 1,248 Sovereign debt/sovereign guaranteed 919 37 — 956 Commercial paper/CDs 651 — — 651 Foreign covered bonds 77 — — 77 Non-agency RMBS 75 3 5 73 State and political subdivisions 16 — — 16 Total securities held-to-maturity $ 37,305 $ 1,126 $ 13 $ 38,418 Total securities $ 136,808 $ 4,285 $ 707 $ 140,386 (a) Includes $535 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 allowance for credit loss on available-for-sale securities of $15 million primarily relates to CLOs and Non-Agency RMBS. See Note 2 for additional information. (c) Includes gross unrealized gains of $29 million and gross unrealized losses of $59 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 unrealized Amortized cost Fair value (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) 1Q20 4Q19 1Q19 Realized gross gains $ 12 $ 5 $ 5 Realized gross losses (3 ) (29 ) (4 ) Recognized gross impairments — (1 ) — Total net securities gains (losses) $ 9 $ (25 ) $ 1
Pre-Tax Securities Gains (Losses) by Type	The following table presents pre-tax net securities gains (losses) by type. Net securities gains (losses) (in millions) 1Q20 4Q19 1Q19 U.S. Treasury $ 5 $ (17 ) $ 1 Other 4 (8 ) — Total net securities gains (losses) $ 9 $ (25 ) $ 1
Debt Securities, Held-to-maturity, Credit Quality Indicator	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 at March 31, 2020 (a) Less than 12 months 12 months or more Total Fair value Unrealized losses Fair value Unrealized losses Fair value Unrealized losses (in millions) Agency RMBS $ 5,200 $ 53 $ 6,969 $ 166 $ 12,169 $ 219 Sovereign debt/sovereign guaranteed 2,801 9 104 — 2,905 9 Agency commercial MBS 1,440 14 522 6 1,962 20 Foreign covered bonds 2,934 33 255 3 3,189 36 Supranational 1,663 6 203 — 1,866 6 CLOs 3,456 189 554 41 4,010 230 Commercial paper/CDs 1,225 2 — — 1,225 2 Foreign government agencies 942 3 50 — 992 3 Non-agency commercial MBS 1,050 60 37 3 1,087 63 Other ABS 1,283 38 193 5 1,476 43 U.S. government agencies 73 2 — — 73 2 Non-agency RMBS (b) 737 27 96 12 833 39 State and political subdivisions 37 2 15 — 52 2 Corporate bonds 232 2 — — 232 2 Total securities available-for-sale (c) $ 23,073 $ 440 $ 8,998 $ 236 $ 32,071 $ 676 (a) Includes $3.9 billion of securities with an unrealized loss of greater than $1 million. (b) Includes $97 million of securities with an unrealized loss of $7 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 $59 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 value Unrealized losses Fair value Unrealized losses Fair value Unrealized losses 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 March 31, 2020 (a) Ratings (b) BB+ (dollars in millions) Amortized Unrealized gain (loss) AAA/ A+/ BBB+/ A1+/A1 Not Agency RMBS $ 29,518 $ 869 100 % — % — % — % — % — % U.S. Treasury 2,937 121 100 — — — — — Agency commercial MBS 1,868 84 100 — — — — — U.S. government agencies 1,244 4 100 — — — — — Sovereign debt/sovereign guaranteed (c) 919 37 100 — — — — — Commercial paper/CDs 651 — — — — — 100 — Foreign covered bonds (d) 77 — 100 — — — — — Non-agency RMBS 75 (2 ) 42 43 3 12 — — State and political subdivisions 16 — 7 2 6 — — 85 Total held-to-maturity securities $ 37,305 $ 1,113 98 % — % — % — % 2 % — % (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. (d) Primarily consists of exposure to Canada.
Maturity Distribution by Carrying Amount and Yield (on Tax Equivalent Basis) of Investment Securities Portfolio	The following table shows the maturity distribution by carrying amount and yield (on a tax equivalent basis) of our securities portfolio. Maturity distribution and yields on securities at March 31, 2020 U.S. Treasury U.S. government agencies State and political subdivisions Other bonds, notes and debentures Mortgage/ asset-backed (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 $ 1,353 2.58 % $ 26 2.46 % $ 165 2.93 % $ 11,377 1.20 % $ — — % $ 12,921 Over 1 through 5 years 12,422 1.53 474 1.73 719 3.29 14,763 0.76 — — 28,378 Over 5 through 10 years 6,009 1.69 1,594 2.70 88 2.58 2,601 0.65 — — 10,292 Over 10 years 3,297 3.11 119 2.06 13 2.32 186 1.67 — — 3,615 Mortgage-backed securities — — — — — — — — 40,444 2.50 40,444 Asset-backed securities — — — — — — — — 6,318 2.70 6,318 Total $ 23,081 1.86 % $ 2,213 2.46 % $ 985 3.15 % $ 28,927 0.93 % $ 46,762 2.53 % $ 101,968 Securities held-to-maturity: One year or less $ — — % $ — — % $ — — % $ 758 1.53 % $ — — % $ 758 Over 1 through 5 years 2,937 1.98 603 1.86 3 5.68 703 0.68 — — 4,246 Over 5 through 10 years — — 259 2.30 — — 186 0.69 — — 445 Over 10 years — — 382 2.43 13 4.76 — — — — 395 Mortgage-backed securities — — — — — — — — 31,461 2.88 31,461 Total $ 2,937 1.98 % $ 1,244 2.12 % $ 16 4.92 % $ 1,647 1.06 % $ 31,461 2.88 % $ 37,305 (a) Yields are based upon the amortized cost of securities.

Loans and asset quality (Tables

Loans and asset quality (Tables)	3 Months Ended
	Mar. 31, 2020
Receivables [Abstract]
Schedule of Loan Portfolio and Industry Concentrations of Credit Risk	The table below provides the details of our loan portfolio and industry concentrations of credit risk at March 31, 2020 and Dec. 31, 2019 . Loans March 31, 2020 Dec. 31, 2019 (in millions) Domestic: Commercial $ 3,010 $ 1,442 Commercial real estate 6,429 5,575 Financial institutions 6,231 4,852 Lease financings 472 537 Wealth management loans and mortgages 16,128 16,050 Other residential mortgages 472 494 Overdrafts 1,851 524 Other 1,168 1,167 Margin loans 11,733 11,907 Total domestic 47,494 42,548 Foreign: Commercial 425 347 Commercial real estate 22 7 Financial institutions 7,985 7,626 Lease financings 582 576 Wealth management loans and mortgages 131 140 Other (primarily overdrafts) 4,347 2,230 Margin loans 1,382 1,479 Total foreign 14,874 12,405 Total loans (a) $ 62,368 $ 54,953 (a) Net of unearned income of $301 million at March 31, 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. Allowance for credit losses activity for the quarter ended March 31, 2020 Wealth management loans and mortgages Other residential mortgages (in millions) Commercial Commercial real estate Financial institutions Lease financings Foreign (a) Total 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 — — — — — — — — Net (charge-offs) recoveries — — — — — — — — Provision 9 118 4 10 1 (1 ) — 141 Ending balance (b) $ 26 $ 208 $ 18 $ 13 $ 9 $ 14 $ — $ 288 Allowance for: Loan losses $ 13 $ 83 $ 10 $ 13 $ 7 $ 14 $ — $ 140 Lending-related commitments 13 125 8 — 2 — — 148 Individually evaluated for impairment: Loan balance $ — $ — $ — $ — $ 18 (c) $ — $ — $ 18 Allowance for loan losses — — — — — — — — (a) The allowance related to the foreign exposure has been reclassified to financial institutions ( $10 million ), commercial ( $10 million ) and lease financings ( $4 million ). (b) Includes $12 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 Dec. 31, 2019 Wealth management loans and mortgages Other residential mortgages (in millions) Commercial Commercial real estate Financial institutions Lease financings All other Foreign Total Beginning balance $ 61 $ 77 $ 21 $ 3 $ 20 $ 14 $ — $ 28 $ 224 Charge-offs — — — — — (1 ) — — (1 ) Recoveries — — — — — 1 — — 1 Net (charge-offs) recoveries — — — — — — — — — Provision (1 ) (1 ) (1 ) — — (1 ) — (4 ) (8 ) Ending balance $ 60 $ 76 $ 20 $ 3 $ 20 $ 13 $ — $ 24 $ 216 Allowance for: Loan losses $ 11 $ 57 $ 5 $ 3 $ 18 $ 13 $ — $ 15 $ 122 Lending-related commitments 49 19 15 — 2 — — 9 94 Individually evaluated for impairment: Loan balance $ — $ — $ — $ — $ 15 $ — $ — $ — $ 15 Allowance for loan losses — — — — — — — — — Collectively evaluated for impairment: Loan balance $ 1,442 $ 5,575 $ 4,852 $ 537 $ 16,035 $ 494 $ 13,598 (a) $ 12,405 $ 54,938 Allowance for loan losses 11 57 5 3 18 13 — 15 122 (a) Includes $524 million of domestic overdrafts, $11,907 million of margin loans and $1,167 million of other loans at Dec. 31, 2019 . Allowance for credit losses activity for the quarter ended March 31, 2019 Wealth management loans and mortgages Other residential mortgages All other Foreign Total (in millions) Commercial Commercial real estate Financial institutions Lease financings Beginning balance $ 81 $ 75 $ 22 $ 5 $ 21 $ 16 $ — $ 32 $ 252 Charge-offs (11 ) — — — — — — — (11 ) Recoveries — — — — — — — — — Net recoveries (11 ) — — — — — — — (11 ) Provision 12 (1 ) 1 (1 ) — (1 ) — (3 ) 7 Ending balance $ 82 $ 74 $ 23 $ 4 $ 21 $ 15 $ — $ 29 $ 248 Allowance for: Loan losses $ 24 $ 56 $ 10 $ 4 $ 18 $ 15 $ — $ 19 $ 146 Lending-related commitments 58 18 13 — 3 — — 10 102 Individually evaluated for impairment: Loan balance $ 96 $ — $ — $ — $ 4 $ — $ — $ — $ 100 Allowance for loan losses 10 — — — — — — — 10 Collectively evaluated for impairment: Loan balance $ 1,626 $ 4,921 $ 4,652 $ 653 $ 15,724 $ 574 $ 13,913 (a) $ 11,324 $ 53,387 Allowance for loan losses 14 56 10 4 18 15 — 19 136 (a) Includes $654 million of domestic overdrafts, $12,107 million of margin loans and $1,152 million of other loans at March 31, 2019 .
Distribution of Nonperforming Assets	The table below presents our nonperforming assets. Nonperforming assets March 31, 2020 Dec. 31, 2019 Recorded investment With an allowance Without an allowance (in millions) Total Nonperforming loans: Other residential mortgages $ 60 $ — $ 60 $ 62 Wealth management loans and mortgages 9 18 27 24 Total nonperforming loans 69 18 87 86 Other assets owned 1 — 1 3 Total nonperforming assets $ 70 $ 18 $ 88 $ 89
Information about Past Due Loans	The table below presents our past due loans. Past due loans and still accruing interest March 31, 2020 Dec. 31, 2019 Days past due Total past due Days past due Total past due (in millions) 30-59 60-89 ≥90 30-59 60-89 ≥90 Financial institutions $ — $ — $ — $ — $ 1 $ 30 $ — $ 31 Wealth management loans and mortgages 77 1 — 78 22 5 — 27 Commercial real estate — — — — 6 12 — 18 Other residential mortgages 9 1 — 10 8 3 — 11 Total past due loans $ 86 $ 2 $ — $ 88 $ 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 March 31, 2020 Revolving loans Originated, at amortized cost Amortized cost Converted to term loans - Amortized cost Accrued (in millions) 1Q20 2019 2018 2017 2016 Prior to 2016 Total (a) Commercial: Investment grade $ 20 $ 286 $ 107 $ 600 $ 57 $ — $ 1,994 $ — $ 3,064 Non-investment grade 41 72 12 — 6 — 240 — 371 Total commercial 61 358 119 600 63 — 2,234 — 3,435 $ 4 Commercial real estate: Investment grade 414 1,412 1,047 624 636 640 586 — $ 5,359 Non-investment grade 15 136 213 106 313 48 232 29 1,092 Total commercial real estate 429 1,548 1,260 730 949 688 818 29 6,451 11 Financial institutions: Investment grade 49 270 133 125 14 189 11,429 — $ 12,209 Non-investment grade 15 8 — — — — 1,984 — 2,007 Total financial institutions 64 278 133 125 14 189 13,413 — 14,216 26 Wealth management loans and mortgages: Investment grade 3 83 12 178 58 94 7,049 — $ 7,477 Non-investment grade — — — — — — 132 — 132 Wealth management mortgages 208 1,139 752 1,438 1,833 3,239 41 — 8,650 Total wealth management loans and mortgages 211 1,222 764 1,616 1,891 3,333 7,222 — 16,259 38 Lease financings — 21 23 72 34 904 — — 1,054 — Other residential mortgages — — — — — 472 — — 472 2 Other loans 5 — — — — — 1,214 — 1,219 1 Margin loans 2,260 1,300 — — — — 9,555 — 13,115 12 Total loans $ 3,030 $ 4,727 $ 2,299 $ 3,143 $ 2,951 $ 5,586 $ 34,456 $ 29 $ 56,221 $ 94 (a) Excludes overdrafts of $6,147 million . Overdrafts occur on a daily basis primarily in the custody and securities clearance business and are generally repaid within two business days.

Goodwill and intangible assets

Goodwill and intangible assets (Tables)	3 Months Ended
	Mar. 31, 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 Other Consolidated Balance at Dec. 31, 2019 $ 8,332 $ 9,007 $ 47 $ 17,386 Foreign currency translation (43 ) (103 ) — (146 ) Other (a) 47 — (47 ) — Balance at March 31, 2020 $ 8,336 $ 8,904 $ — $ 17,240 (a) Reflects the transfer of goodwill associated with the Capital Markets business. Goodwill by business (in millions) Investment Investment Other Consolidated Balance at Dec. 31, 2018 $ 8,333 $ 8,970 $ 47 $ 17,350 Foreign currency translation (5 ) 22 — 17 Balance at March 31, 2019 $ 8,328 $ 8,992 $ 47 $ 17,367
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 Other Consolidated Balance at Dec. 31, 2019 $ 678 $ 1,580 $ 849 $ 3,107 Amortization (18 ) (8 ) — (26 ) Foreign currency translation (1 ) (10 ) — (11 ) Balance at March 31, 2020 $ 659 $ 1,562 $ 849 $ 3,070 Intangible assets – net carrying amount by business (in millions) Investment Investment Other Consolidated Balance at Dec. 31, 2018 $ 758 $ 1,613 $ 849 $ 3,220 Amortization (20 ) (9 ) — (29 ) Foreign currency translation (1 ) 3 — 2 Balance at March 31, 2019 $ 737 $ 1,607 $ 849 $ 3,193
Breakdown of Intangible Assets by Type	The table below provides a breakdown of intangible assets by type. Intangible assets March 31, 2020 Dec. 31, 2019 (in millions) Gross carrying amount Accumulated amortization Net carrying amount Remaining weighted- average amortization period Gross Accumulated Net carrying amount Subject to amortization: (a) Customer contracts—Investment Services $ 1,515 $ (1,227 ) $ 288 10 years $ 1,520 $ (1,214 ) $ 306 Customer relationships—Investment Management 709 (548 ) 161 11 years 712 (544 ) 168 Other 64 (18 ) 46 14 years 64 (16 ) 48 Total subject to amortization 2,288 (1,793 ) 495 10 years 2,296 (1,774 ) 522 Not subject to amortization: (b) Tradenames 1,291 N/A 1,291 N/A 1,293 N/A 1,293 Customer relationships 1,284 N/A 1,284 N/A 1,292 N/A 1,292 Total not subject to amortization 2,575 N/A 2,575 N/A 2,585 N/A 2,585 Total intangible assets $ 4,863 $ (1,793 ) $ 3,070 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)	3 Months Ended
	Mar. 31, 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 March 31, 2020 Dec. 31, 2019 (in millions) Fails to deliver $ 8,200 (a) $ 1,671 Corporate/bank-owned life insurance 5,240 5,219 Accounts receivable 4,649 3,802 Software 1,678 1,590 Prepaid pension assets 1,502 1,464 Renewable energy investments 1,119 1,144 Equity in a joint venture and other investments 1,091 1,102 Qualified affordable housing project investments 993 1,024 Prepaid expense 515 491 Federal Reserve Bank stock 466 466 Fair value of hedging derivatives 187 21 Seed capital 141 184 Income taxes receivable 47 388 Other (b) 1,618 1,655 Total other assets $ 27,446 $ 20,221 (a) The increase at March 31, 2020 primarily reflects higher trade volumes in the current macroeconomic environment. (b) At March 31, 2020 and Dec. 31, 2019 , other assets include $20 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. Non-readily marketable equity securities Life-to-date (in millions) 1Q20 4Q19 1Q19 Upward adjustments $ 4 $ 1 $ — $ 36 Downward adjustments — (2 ) — (4 ) Net adjustments $ 4 $ (1 ) $ — $ 32
Summary of Investments Valued Using NAV	The table below presents information on our investments valued using NAV. Investments valued using NAV March 31, 2020 Dec. 31, 2019 (in millions) Fair value Unfunded commitments Fair value Unfunded commitments Seed capital (a) $ 51 $ — $ 59 $ — Private equity investments (SBICs) (b) 80 52 89 55 Other (c) 27 — 33 — Total $ 158 $ 52 $ 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 a life of six years, 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. (c) Primarily includes investments in funds that relate to deferred compensation arrangements with employees. Investments in funds can be redeemed on a quarterly basis with redemption notice periods of up to 95 days .

Contract revenue (Tables)

Contract revenue (Tables)	3 Months Ended
	Mar. 31, 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. Disaggregation of contract revenue by business segment (a) Quarter ended March 31, 2020 Dec. 31, 2019 March 31, 2019 (in millions) IS IM Other Total IS (b) IM (b) Other (b) Total IS (b) IM (b) Other (b) Total Fee revenue - contract revenue: Investment services fees: Asset servicing fees $ 1,127 $ 23 $ (11 ) $ 1,139 $ 1,117 $ 25 $ (14 ) $ 1,128 $ 1,081 $ 20 $ (8 ) $ 1,093 Clearing services fees 470 — — 470 421 — — 421 398 — — 398 Issuer services fees 263 — — 263 264 — — 264 251 — — 251 Treasury services fees 149 — — 149 148 — — 148 132 — — 132 Total investment services fees 2,009 23 (11 ) 2,021 1,950 25 (14 ) 1,961 1,862 20 (8 ) 1,874 Investment management and performance fees 5 862 (4 ) 863 5 886 (4 ) 887 4 841 (4 ) 841 Financing-related fees 28 — — 28 12 — — 12 17 — — 17 Distribution and servicing (12 ) 43 — 31 (10 ) 44 — 34 (14 ) 45 — 31 Investment and other income 72 (50 ) — 22 72 (50 ) — 22 69 (49 ) — 20 Total fee revenue - contract revenue 2,102 878 (15 ) 2,965 2,029 905 (18 ) 2,916 1,938 857 (12 ) 2,783 Fee and other revenue - not in scope of Accounting Standards Codification (“ASC”) 606 (c)(d) 334 (32 ) 45 347 207 19 812 1,038 223 12 30 265 Total fee and other revenue $ 2,436 $ 846 $ 30 $ 3,312 $ 2,236 $ 924 $ 794 $ 3,954 $ 2,161 $ 869 $ 18 $ 3,048 (a) 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. (b) Prior periods have been restated to reflect the reclassifications. See Note 19 for additional information. (c) Primarily includes foreign exchange and other trading revenue, financing-related fees, asset servicing fees, net securities gains (losses) and investment and other income (loss), all of which are accounted for using other accounting guidance. (d) The Investment Management business includes (loss) income from consolidated investment management funds, net of noncontrolling interests, of $(20) million in the first quarter of 2020 , $8 million in the fourth quarter of 2019 and $16 million in the first quarter of 2019 . IS - Investment Services segment. IM - Investment Management segment.

Net interest revenue (Tables)

Net interest revenue (Tables)	3 Months Ended
	Mar. 31, 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 (in millions) March 31, 2020 Dec. 31, 2019 March 31, 2019 Interest revenue Deposits with the Federal Reserve and other central banks $ 80 $ 94 $ 139 Deposits with banks 58 65 63 Federal funds sold and securities purchased under resale agreements 396 452 474 Margin loans 87 96 135 Non-margin loans 309 328 355 Securities: Taxable 594 639 706 Exempt from federal income taxes 6 7 12 Total securities 600 646 718 Trading securities 40 40 36 Total interest revenue 1,570 1,721 1,920 Interest expense Deposits 240 334 391 Federal funds purchased and securities sold under repurchase agreements 275 291 331 Trading liabilities 7 9 7 Other borrowed funds 4 5 24 Commercial paper 6 7 8 Customer payables 30 40 70 Long-term debt 194 220 248 Total interest expense 756 906 1,079 Net interest revenue 814 815 841 Provision for credit losses 169 (8 ) 7 Net interest revenue after provision for credit losses $ 645 $ 823 $ 834

Employee benefit plans (Tables)

Employee benefit plans (Tables)	3 Months Ended
	Mar. 31, 2020
Defined Benefit Plan [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 March 31, 2020 March 31, 2019 (in millions) Domestic pension benefits Foreign pension benefits Health care benefits Domestic pension benefits Foreign pension benefits Health care benefits Service cost $ — $ 3 $ — $ — $ 3 $ — Interest cost 39 7 1 44 8 2 Expected return on assets (80 ) (10 ) (1 ) (84 ) (11 ) (2 ) Other 22 3 (1 ) 13 — (1 ) Net periodic benefit (credit) cost $ (19 ) $ 3 $ (1 ) $ (27 ) $ — $ (1 )

Variable interest entities an_2

Variable interest entities and securitization (Tables)	3 Months Ended
	Mar. 31, 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 March 31, 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 March 31, 2020 Dec. 31, 2019 (in millions) Investment Management funds Securitization Total consolidated investments Investment Management funds Securitization Total consolidated investments Trading assets $ 215 $ 400 $ 615 $ 229 $ 400 $ 629 Other assets 14 — 14 16 — 16 Total assets $ 229 (a) $ 400 $ 629 $ 245 (b) $ 400 $ 645 Other liabilities $ 1 $ 397 $ 398 $ 1 $ 387 $ 388 Total liabilities $ 1 (a) $ 397 $ 398 $ 1 (b) $ 387 $ 388 Nonredeemable noncontrolling interests $ 94 (a) $ — $ 94 $ 102 (b) $ — $ 102 (a) Includes voting model entities (“VMEs”) with assets of $44 million , liabilities of $1 million and nonredeemable noncontrolling interests of less than $1 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 March 31, 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 March 31, 2020 Dec. 31, 2019 (in millions) Assets Liabilities Maximum loss exposure Assets Liabilities Maximum loss exposure Securities - Available-for-sale (a) $ 180 $ — $ 180 $ 208 $ — $ 208 Other 2,287 390 2,677 2,400 422 2,822 (a) Includes investments in the Company’s sponsored CLOs.

Preferred stock (Tables)

Preferred stock (Tables)	3 Months Ended
	Mar. 31, 2020
Stockholders' Equity Note [Abstract]
Preferred Stock Summary	The following table summarizes BNY Mellon’s preferred stock issued and outstanding at March 31, 2020 and Dec. 31, 2019 . Preferred stock summary (a) Total shares issued and outstanding Carrying value (b) (in millions) March 31, 2020 Dec. 31, 2019 March 31, 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 and including 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 and including Sept. 20, 2026, then a floating rate equal to the three-month LIBOR plus 3.131% 10,000 10,000 990 990 Total 35,826 35,826 $ 3,542 $ 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 and Series F preferred stock is recorded net of issuance costs.
Summary of Preferred Dividends Paid	The table below presents the dividends paid on our preferred stock. Preferred dividends paid (dollars in millions, except per share amounts) Depositary shares per share 1Q20 4Q19 1Q19 Per share Total Per share Total Per share Total Series A 100 (a) $ 1,011.11 $ 5 $ 1,011.11 $ 5 $ 1,000.00 $ 5 Series C 4,000 1,300.00 8 1,300.00 8 1,300.00 8 Series D 100 N/A — 2,250.00 11 N/A — Series E 100 N/A — 2,475.00 25 N/A — Series F 100 2,312.50 23 N/A — 2,312.50 23 Total $ 36 $ 49 $ 36 (a) Represents Normal Preferred Capital Securities. N/A - Not applicable.

Other comprehensive income (l_2

Other comprehensive income (loss) (Tables)	3 Months Ended
	Mar. 31, 2020
Equity [Abstract]
Components of Other Comprehensive Income (Loss)	Components of other comprehensive income (loss) Quarter ended March 31, 2020 Dec. 31, 2019 March 31, 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) $ (265 ) $ (104 ) $ (369 ) $ 292 $ 96 $ 388 $ 27 $ 2 $ 29 Total foreign currency translation (265 ) (104 ) (369 ) 292 96 388 27 2 29 Unrealized gain (loss) on assets available-for-sale: Unrealized gain (loss) arising during period 243 (60 ) 183 (114 ) 37 (77 ) 322 (83 ) 239 Reclassification adjustment (b) (9 ) 2 (7 ) 25 (6 ) 19 (1 ) — (1 ) Net unrealized gain (loss) on assets available-for-sale 234 (58 ) 176 (89 ) 31 (58 ) 321 (83 ) 238 Defined benefit plans: Prior service cost arising during the period — — — (1 ) — (1 ) — — — Net (loss) gain arising during the period — — — (110 ) 32 (78 ) (11 ) 2 (9 ) Amortization of prior service credit, net loss and initial obligation included in net periodic benefit cost (b) 24 (6 ) 18 14 (10 ) 4 13 (3 ) 10 Total defined benefit plans 24 (6 ) 18 (97 ) 22 (75 ) 2 (1 ) 1 Unrealized gain (loss) on cash flow hedges: Unrealized hedge (loss) gain arising during period (13 ) 3 (10 ) 17 (5 ) 12 6 (4 ) 2 Reclassification of net loss (gain) to net income: Interest rate contracts - interest expense — — — (8 ) 2 (6 ) — — — Foreign exchange (“FX”) contracts - staff expense (1 ) — (1 ) (2 ) — (2 ) 1 2 3 Total reclassifications to net income (1 ) — (1 ) (10 ) 2 (8 ) 1 2 3 Net unrealized (loss) gain on cash flow hedges (14 ) 3 (11 ) 7 (3 ) 4 7 (2 ) 5 Total other comprehensive (loss) income $ (21 ) $ (165 ) $ (186 ) $ 113 $ 146 $ 259 $ 357 $ (84 ) $ 273 (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)	3 Months Ended
	Mar. 31, 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 March 31, 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 March 31, 2020 Total carrying (dollars in millions) Level 1 Level 2 Level 3 Netting (a) Available-for-sale securities: Agency RMBS $ — $ 26,691 $ — $ — $ 26,691 U.S. Treasury 23,081 — — — 23,081 Sovereign debt/sovereign guaranteed 7,070 5,840 — — 12,910 Agency commercial MBS — 9,805 — — 9,805 Foreign covered bonds — 5,272 — — 5,272 Supranational — 4,348 — — 4,348 CLOs — 4,098 — — 4,098 Commercial paper/CDs — 2,814 — — 2,814 Foreign government agencies — 2,764 — — 2,764 Non-agency commercial MBS — 2,473 — — 2,473 Other ABS — 2,220 — — 2,220 U.S. government agencies — 2,213 — — 2,213 Non-agency RMBS (b) — 1,475 — — 1,475 State and political subdivisions — 985 — — 985 Corporate bonds — 818 — — 818 Other debt securities — 1 — — 1 Total available-for-sale securities 30,151 71,817 — — 101,968 Trading assets: Debt instruments 1,812 3,179 — — 4,991 Equity instruments (c) 2,231 — — — 2,231 Derivative assets not designated as hedging: Interest rate 8 6,035 — (3,047 ) 2,996 Foreign exchange — 9,964 — (7,272 ) 2,692 Equity and other contracts 6 11 — (9 ) 8 Total derivative assets not designated as hedging 14 16,010 — (10,328 ) 5,696 Total trading assets 4,057 19,189 — (10,328 ) 12,918 Other assets: Derivative assets designated as hedging: Foreign exchange — 187 — — 187 Total derivative assets designated as hedging — 187 — — 187 Other assets (d) 46 136 — — 182 Assets measured at NAV (d) 158 Subtotal assets of operations at fair value 34,254 91,329 — (10,328 ) 115,413 Percentage of assets of operations prior to netting 27 % 73 % — % Assets of consolidated investment management funds 188 41 — — 229 Total assets $ 34,442 $ 91,370 $ — $ (10,328 ) $ 115,642 Percentage of total assets prior to netting 27 % 73 % — % Liabilities measured at fair value on a recurring basis at March 31, 2020 Total carrying (dollars in millions) Level 1 Level 2 Level 3 Netting (a) Trading liabilities: Debt instruments $ 1,101 $ 143 $ — $ — $ 1,244 Equity instruments 64 — — — 64 Derivative liabilities not designated as hedging: Interest rate 14 5,261 — (3,479 ) 1,796 Foreign exchange — 11,854 — (8,382 ) 3,472 Equity and other contracts 1 51 — (3 ) 49 Total derivative liabilities not designated as hedging 15 17,166 — (11,864 ) 5,317 Total trading liabilities 1,180 17,309 — (11,864 ) 6,625 Long-term debt (c) — 397 — — 397 Other liabilities – derivative liabilities designated as hedging: Interest rate — 927 — — 927 Foreign exchange — 46 — — 46 Total other liabilities – derivative liabilities designated as hedging — 973 — — 973 Subtotal liabilities of operations at fair value 1,180 18,679 — (11,864 ) 7,995 Percentage of liabilities of operations prior to netting 6 % 94 % — % Liabilities of consolidated investment management funds — 1 — — 1 Total liabilities $ 1,180 $ 18,680 $ — $ (11,864 ) $ 7,996 Percentage of total liabilities prior to netting 6 % 94 % — % (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 $535 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 value (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 value (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 March 31, 2020 Dec. 31, 2019 Total carrying value Ratings (a) Total carrying value Ratings (a) AAA/ AA- A+/ A- BBB+/ BBB- BB+ and lower AAA/ AA- A+/ A- BBB+/ BBB- BB+ and lower (dollars in millions) (b) (b) Non-agency RMBS (c) , originated in: 2007-2020 $ 826 79 % 1 % — % 20 % $ 464 55 % 1 % — % 44 % 2006 244 — 22 — 78 291 — 21 — 79 2005 258 5 2 8 85 305 5 2 8 85 2004 and earlier 147 22 23 6 49 173 22 24 4 50 Total non-agency RMBS $ 1,475 48 % 6 % 2 % 44 % $ 1,233 25 % 9 % 3 % 63 % Non-agency commercial MBS originated in: 2009-2020 $ 2,473 100 % — % — % — % $ 2,178 98 % 2 % — % — % Foreign covered bonds: Canada $ 2,207 100 % — % — % — % $ 1,798 100 % — % — % — % UK 1,109 100 — — — 984 100 — — — Australia 605 100 — — — 431 100 — — — Norway 495 100 — — — 287 100 — — — Germany 465 100 — — — 357 100 — — — Other 391 100 — — — 340 100 — — — Total foreign covered bonds $ 5,272 100 % — % — % — % $ 4,197 100 % — % — % — % Sovereign debt/sovereign guaranteed: UK $ 2,971 100 % — % — % — % $ 3,318 100 % — % — % — % Germany 2,168 100 — — — 1,997 100 — — — France 1,577 100 — — — 1,272 100 — — — Spain 1,546 — 4 96 — 1,453 — 6 94 — Italy 1,390 — — 100 — 1,260 — — 100 — Singapore 768 100 — — — 742 100 — — — Ireland 462 — 100 — — 301 — 100 — — Netherlands 387 100 — — — 791 100 — — — Austria 347 100 — — — 240 100 — — — Canada 345 100 — — — 271 100 — — — Hong Kong 294 100 — — — 411 100 — — — Other (d) 655 39 39 — 22 590 29 48 — 23 Total sovereign debt/sovereign guaranteed $ 12,910 71 % 6 % 22 % 1 % $ 12,646 73 % 5 % 21 % 1 % Foreign government agencies: Germany $ 1,161 100 % — % — % — % $ 1,131 100 % — % — % — % Netherlands 632 100 — — — 678 100 — — — Sweden 250 100 — — — 202 100 — — — Finland 240 100 — — — 245 100 — — — Other 481 72 28 — — 387 67 33 — — Total foreign government agencies $ 2,764 95 % 5 % — % — % $ 2,643 95 % 5 % — % — % (a) Represents ratings by S&P or the equivalent. (b) At March 31, 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 $535 million at March 31, 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 $113 million at March 31, 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 March 31, 2020 and Dec. 31, 2019 . Assets measured at fair value on a nonrecurring basis March 31, 2020 Dec. 31, 2019 Total carrying value Total carrying value (in millions) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Loans (a) $ — $ 56 $ — $ 56 $ — $ 58 $ — $ 58 Other assets (b) — 102 — 102 — 64 — 64 Total assets at fair value on a nonrecurring basis $ — $ 158 $ — $ 158 $ — $ 122 $ — $ 122 (a) The fair value of these loans decreased less than $1 million in the first 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 March 31, 2020 and Dec. 31, 2019 , by caption on the consolidated balance sheet and by the valuation hierarchy. Summary of financial instruments March 31, 2020 (in millions) Level 1 Level 2 Level 3 Total Carrying Assets: Interest-bearing deposits with the Federal Reserve and other central banks $ — $ 146,535 $ — $ 146,535 $ 146,535 Interest-bearing deposits with banks — 22,689 — 22,689 22,672 Federal funds sold and securities purchased under resale agreements — 27,363 — 27,363 27,363 Securities held-to-maturity 4,014 34,404 — 38,418 37,305 Loans (a) — 61,482 — 61,482 61,174 Other financial assets 5,091 1,198 — 6,289 6,289 Total $ 9,105 $ 293,671 $ — $ 302,776 $ 301,338 Liabilities: Noninterest-bearing deposits $ — $ 96,600 $ — $ 96,600 $ 96,600 Interest-bearing deposits — 239,459 — 239,459 240,117 Federal funds purchased and securities sold under repurchase agreements — 13,128 — 13,128 13,128 Payables to customers and broker-dealers — 24,016 — 24,016 24,016 Commercial paper — 1,121 — 1,121 1,121 Borrowings — 1,767 — 1,767 1,767 Long-term debt — 27,521 — 27,521 27,097 Total $ — $ 403,612 $ — $ 403,612 $ 403,846 (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)	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Assets and Liabilities of Consolidated Investment Management Funds, at Fair Value	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) 1Q20 4Q19 1Q19 Foreign exchange and other trading revenue $ (10 ) $ (1 ) $ (5 ) (a) The changes in fair value are approximately offset by an economic hedge included in foreign exchange and other trading revenue. Assets and liabilities of consolidated investment management funds, at fair value March 31, 2020 Dec. 31, 2019 (in millions) Assets of consolidated investment management funds: Trading assets $ 215 $ 229 Other assets 14 16 Total assets of consolidated investment management funds $ 229 $ 245 Liabilities of consolidated investment management funds: Other liabilities 1 1 Total liabilities of consolidated investment management funds $ 1 $ 1

Derivative instruments (Tables)

Derivative instruments (Tables)	3 Months Ended
	Mar. 31, 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 gains (losses) 1Q20 4Q19 1Q19 Interest rate fair value hedges of available-for-sale securities Derivative Interest revenue $ (1,033 ) $ 324 $ (383 ) Hedged item Interest revenue 1,011 (311 ) 376 Interest rate fair value hedges of long-term debt Derivative Interest expense 714 (145 ) 185 Hedged item Interest expense (708 ) 144 (184 ) Foreign exchange fair value hedges of available-for-sale securities Derivative (a) Other revenue 7 6 6 Hedged item Other revenue (7 ) (6 ) (5 ) Cash flow hedge of interest rate risk Gain reclassified from OCI into income Interest expense — 8 — Cash flow hedges of forecasted FX exposures Gain (loss) reclassified from OCI into income Staff expense 1 2 (1 ) (Loss) gain recognized in the consolidated income statement due to fair value and cash flow hedging relationships $ (15 ) $ 22 $ (6 ) (a) Includes gains of less than $1 million in the first quarter of 2020 and the fourth quarter of 2019 and a gain of $1 million in the first quarter of 2019 associated with the amortization of the excluded component. At March 31, 2020 and Dec. 31, 2019 , the remaining accumulated OCI balance associated with the excluded component was de minimis.
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) Gain or (loss) recognized in accumulated OCI on derivatives Gain or (loss) reclassified from accumulated OCI into income Derivatives in net investment hedging relationships Location of gain or (loss) reclassified from accumulated OCI into income 1Q20 4Q19 1Q19 1Q20 4Q19 1Q19 FX contracts $ 437 $ (341 ) $ (6 ) 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 asset or liability Hedge accounting basis adjustment increase (decrease) (a) (in millions) March 31, 2020 Dec. 31, 2019 March 31, 2020 Dec. 31, 2019 Available-for-sale securities (b)(c) $ 16,559 $ 13,792 $ 1,846 $ 687 Long-term debt $ 14,907 $ 13,945 $ 849 $ 116 (a) Includes $210 million and $53 million of basis adjustment increases on discontinued hedges associated with available-for-sale securities at March 31, 2020 and Dec. 31, 2019 , respectively, and $178 million and $200 million of basis adjustment decreases on discontinued hedges associated with long-term debt at March 31, 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 $- million at March 31, 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 March 31, 2020 and Dec. 31, 2019 . Impact of derivative instruments on the balance sheet Notional value Asset derivatives fair value Liability derivatives fair value March 31, 2020 Dec. 31, 2019 March 31, 2020 Dec. 31, 2019 March 31, 2020 Dec. 31, 2019 (in millions) Derivatives designated as hedging instruments: (a)(b) Interest rate contracts $ 30,356 $ 28,365 $ — $ — $ 927 $ 350 Foreign exchange contracts 7,524 8,390 187 21 46 257 Total derivatives designated as hedging instruments $ 187 $ 21 $ 973 $ 607 Derivatives not designated as hedging instruments: (b)(c) Interest rate contracts $ 273,595 $ 306,790 $ 6,043 $ 3,690 $ 5,275 $ 3,250 Foreign exchange contracts 924,891 848,961 9,964 5,331 11,854 5,340 Equity contracts 1,269 3,189 15 19 51 5 Credit contracts 165 165 2 — 1 4 Total derivatives not designated as hedging instruments $ 16,024 $ 9,040 $ 17,181 $ 8,599 Total derivatives fair value (d) $ 16,211 $ 9,061 $ 18,154 $ 9,206 Effect of master netting agreements (e) (10,328 ) (5,819 ) (11,864 ) (5,415 ) Fair value after effect of master netting agreements $ 5,883 $ 3,242 $ 6,290 $ 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 $1,320 million and $2,856 million , respectively, at March 31, 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) 1Q20 4Q19 1Q19 Foreign exchange $ 253 $ 138 $ 160 Other trading revenue 66 30 10 Total foreign exchange and other trading revenue $ 319 $ 168 $ 170
Fair Value of Derivative Contracts Falling under Early Termination Provisions that were in Net Liability Position	The following table shows the fair value of contracts falling under early termination provisions that were in net liability positions for three key ratings triggers. Potential close-out exposures (fair value) (a) March 31, 2020 Dec. 31, 2019 (in millions) If The Bank of New York Mellon’s rating changed to: (b) A3/A- $ 106 $ 56 Baa2/BBB $ 1,213 $ 608 Ba1/BB+ $ 4,766 $ 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 rating by Moody’s/S&P. The following table shows the aggregate fair value of OTC derivative contracts in net liability positions that contained credit-risk contingent features and the value of collateral that has been posted. March 31, 2020 Dec. 31, 2019 (in millions) Aggregate fair value of OTC derivatives in net liability positions (a) $ 8,050 $ 3,442 Collateral posted $ 8,299 $ 3,671 (a) Before consideration of cash collateral.
Offsetting Assets	The following tables present derivative and financial instruments and their related offsets. There were no derivative instruments or financial instruments subject to a legally enforceable netting agreement for which we are not currently netting. Offsetting of derivative assets and financial assets at March 31, 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 $ 4,103 $ 3,047 $ 1,056 $ 369 $ — $ 687 Foreign exchange contracts 8,984 7,272 1,712 132 — 1,580 Equity and other contracts 15 9 6 — — 6 Total derivatives subject to netting arrangements 13,102 10,328 2,774 501 — 2,273 Total derivatives not subject to netting arrangements 3,109 — 3,109 — — 3,109 Total derivatives 16,211 10,328 5,883 501 — 5,382 Reverse repurchase agreements 97,971 80,203 (b) 17,768 17,759 — 9 Securities borrowing 9,613 — 9,613 9,055 — 558 Total $ 123,795 $ 90,531 $ 33,264 $ 27,315 $ — $ 5,949 (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 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 $ 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 March 31, 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 $ 6,181 $ 3,479 $ 2,702 $ 1,452 $ — $ 1,250 Foreign exchange contracts 10,705 8,382 2,323 545 — 1,778 Equity and other contracts 27 3 24 — — 24 Total derivatives subject to netting arrangements 16,913 11,864 5,049 1,997 — 3,052 Total derivatives not subject to netting arrangements 1,241 — 1,241 — — 1,241 Total derivatives 18,154 11,864 6,290 1,997 — 4,293 Repurchase agreements 92,057 80,203 (b) 11,854 11,823 — 31 Securities lending 750 — 750 717 — 33 Total $ 110,961 $ 92,067 $ 18,894 $ 14,537 $ — $ 4,357 (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 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 $ 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 March 31, 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 $ 82,520 $ — $ — $ 82,520 $ 94,788 $ 10 $ — $ 94,798 U.S. government agencies 633 — 10 643 594 16 — 610 Agency RMBS 3,794 — 77 3,871 4,234 774 — 5,008 Corporate bonds 542 — 1,280 1,822 266 236 1,617 2,119 Other debt securities 527 681 1,011 2,219 40 188 1,079 1,307 Equity securities 215 — 767 982 31 99 479 609 Total $ 88,231 $ 681 $ 3,145 $ 92,057 $ 99,953 $ 1,323 $ 3,175 $ 104,451 Securities lending: U.S. government agencies $ 7 $ — $ — $ 7 $ 19 $ — $ — $ 19 Other debt securities 196 — — 196 201 — — 201 Equity securities 547 — — 547 498 — — 498 Total $ 750 $ — $ — $ 750 $ 718 $ — $ — $ 718 Total borrowings $ 88,981 $ 681 $ 3,145 $ 92,807 $ 100,671 $ 1,323 $ 3,175 $ 105,169

Commitments and contingent li_2

Commitments and contingent liabilities (Tables)	3 Months Ended
	Mar. 31, 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 March 31, 2020 Dec. 31, 2019 (in millions) Lending commitments $ 47,732 $ 49,119 Standby letters of credit (“SBLC”) (a) 2,328 2,298 Commercial letters of credit 113 74 Securities lending indemnifications (b)(c) 421,691 408,378 (a) Net of participations totaling $146 million at March 31, 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 $56 billion at March 31, 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 $38 billion at March 31, 2020 and $37 billion at Dec. 31, 2019 .
Standby Letters of Credits by Investment Grade	The table below shows SBLCs by investment grade: Standby letters of credit March 31, 2020 Dec. 31, 2019 Investment grade 91 % 90 % Non-investment grade 9 % 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) March 31, 2020 Loans Unfunded commitments Total exposure Securities industry $ 4.2 $ 24.5 $ 28.7 Banks 7.5 1.1 8.6 Asset managers 1.3 6.5 7.8 Insurance 0.3 2.4 2.7 Government 0.1 0.2 0.3 Other 0.8 0.6 1.4 Total $ 14.2 $ 35.3 $ 49.5 Commercial portfolio exposure (in billions) March 31, 2020 Loans Unfunded commitments Total exposure Manufacturing $ 1.4 $ 3.7 $ 5.1 Services and other 1.3 2.9 4.2 Energy and utilities 0.7 3.5 4.2 Media and telecom — 0.9 0.9 Total $ 3.4 $ 11.0 $ 14.4

Lines of business (Tables)

Lines of business (Tables)	3 Months Ended
	Mar. 31, 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 March 31, 2020 Investment Investment Other Consolidated (dollars in millions) Total fee and other revenue $ 2,436 $ 846 (a) $ 30 $ 3,312 (a) Net interest revenue (expense) 806 52 (44 ) 814 Total revenue (loss) 3,242 898 (a) (14 ) 4,126 (a) Provision for credit losses 149 9 11 169 Noninterest expense 1,987 695 30 2,712 Income (loss) before income taxes $ 1,106 $ 194 (a) $ (55 ) $ 1,245 (a) Pre-tax operating margin (b) 34 % 22 % N/M 30 % Average assets $ 304,089 $ 30,543 $ 50,646 $ 385,278 (a) Total fee and other revenue includes net loss from consolidated investment management funds of $20 million , representing $38 million of losses and a loss attributable to noncontrolling interests of $18 million . Total revenue and income before income taxes are net of a loss attributable to noncontrolling interests of $18 million . (b) Income before income taxes divided by total revenue. N/M - Not meaningful. For the quarter ended Dec. 31, 2019 Investment (a) Investment (a) Other (a) Consolidated (dollars in millions) Total fee and other revenue $ 2,236 $ 924 (b) $ 794 $ 3,954 (b) Net interest revenue (expense) 778 47 (10 ) 815 Total revenue 3,014 971 (b) 784 4,769 (b) Provision for credit losses (5 ) — (3 ) (8 ) Noninterest expense 2,179 731 54 2,964 Income (loss) before income taxes $ 840 $ 240 (b) $ 733 $ 1,813 (b) Pre-tax operating margin (c) 28 % 25 % N/M 38 % Average assets $ 278,098 $ 28,481 $ 47,762 $ 354,341 (a) Prior periods have been restated to reflect the reclassifications. (b) Total fee and other revenue includes net income from consolidated investment management funds of $8 million , representing $17 million of income and noncontrolling interests of $9 million . Total revenue and income before income taxes are net of noncontrolling interests of $9 million . (c) Income before income taxes divided by total revenue. N/M - Not meaningful. For the quarter ended March 31, 2019 Investment (a) Investment (a) Other (a) Consolidated (dollars in millions) Total fee and other revenue $ 2,161 $ 869 (b) $ 18 $ 3,048 (b) Net interest revenue (expense) 804 67 (30 ) 841 Total revenue (loss) 2,965 936 (b) (12 ) 3,889 (b) Provision for credit losses 8 1 (2 ) 7 Noninterest expense 1,981 669 49 2,699 Income (loss) before income taxes $ 976 $ 266 (b) $ (59 ) $ 1,183 (b) Pre-tax operating margin (c) 33 % 28 % N/M 31 % Average assets $ 256,034 $ 31,857 $ 48,274 $ 336,165 (a) Prior periods have been restated to reflect the reclassifications. (b) Total fee and other revenue includes net income from consolidated investment management funds of $16 million , representing $26 million of income and noncontrolling interests of $10 million . Total revenue and income before income taxes are net of noncontrolling interests of $10 million . (c) Income before income taxes divided by total revenue. N/M - Not meaningful.

Supplemental information to t_2

Supplemental information to the Consolidated Statement of Cash Flows (Tables)	3 Months Ended
	Mar. 31, 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 Three months ended March 31, (in millions) 2020 2019 Change in assets of consolidated investment management funds $ 16 $ 11 Change in liabilities of consolidated investment management funds — 1 Change in nonredeemable noncontrolling interests of consolidated investment management funds 8 21 Securities purchased not settled 1,667 1,407 Securities matured not settled 9 680 Premises and equipment/capitalized software funded by finance lease obligations — 13 Premises and equipment/operating lease obligations 15 1,281 (a) Investment redemptions not settled 37 — (a) Includes $1,244 million related to the adoption of ASU 2016-02, Leases, and $37 million related to new or modified leases.

Accounting changes and new ac_4

Accounting changes and new accounting guidance - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Jan. 01, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Minimum loan amount required to measure impairment allowance	$ 1,000,000
ASU 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adjustment for the cumulative effect of applying the ASU		$ 40,000,000
Retained earnings | ASU 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adjustment for the cumulative effect of applying the ASU		$ 45,000,000
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

Accounting changes and new ac_5

Accounting changes and new accounting guidance - Allowance for Credit Losses (Details) - USD ($) $ in Millions	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019	Sep. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses, loans	$ 288	$ 147	$ 216	$ 224	$ 248	$ 252
Securities	15
ASU 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses, loans		(69)
Allowance for credit losses		161
Cumulative Effect, Period Of Adoption, Adjustment | ASU 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses, loans		(69)
Securities		7
Other		3
Allowance for credit losses		(59)
Reclassification of credit-related reserves on accounts receivable		4
Loans
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses, loans	140		122		146
Loans | ASU 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses, loans		48
Lending-related commitments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses, loans	$ 148		$ 94		$ 102
Lending-related commitments | ASU 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses, loans		$ 21

Acquisitions and dispositions -

Acquisitions and dispositions - Narrative (Details) - USD ($) $ in Millions	Nov. 08, 2019	Mar. 31, 2020
Business Acquisition [Line Items]
Contingent payments		$ 0
Potential obligation to pay additional consideration, lower range		5
Potential obligation to pay additional consideration, upper range		$ 13
Contingent consideration payment period		2 years
Promontory Interfinancial Network
Business Acquisition [Line Items]
Gain on disposal	$ 622

Securities - Amortized Cost, Gr

Securities - Amortized Cost, Gross Unrealized Gains and Losses and Fair Value (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Available-for-sale:
Amortized cost	$ 99,503	$ 87,435
Gross unrealized, Gain	3,159	1,353
Gross unrealized, Loss	694	238
Available-for-sale	101,968	88,550
Held-to-maturity:
Amortized cost	37,305	34,483
Gross unrealized, Gains	1,126	377
Gross unrealized, Losses	13	55
Securities held-to-maturity	38,418	34,805
Amortized cost, Total	136,808	121,918
Gross unrealized, Gain, Total	4,285	1,730
Gross unrealized, Losses, Total	707	293
Fair value, Total	140,386	123,355
Debt securities, available-for-sale, allowance for credit loss	15
AOCI, transfers from AFS to HTM Securities, gross unrealized gains	29	32
AOCI, transfers from AFS to HTM Securities, gross unrealized losses	59	65
Agency RMBS
Available-for-sale:
Amortized cost	26,484	27,022
Gross unrealized, Gain	426	164
Gross unrealized, Loss	219	143
Available-for-sale	26,691	27,043
Held-to-maturity:
Amortized cost	29,518	27,357
Gross unrealized, Gains	874	292
Gross unrealized, Losses	5	46
Securities held-to-maturity	30,387	27,603
U.S. Treasury
Available-for-sale:
Amortized cost	21,430	14,979
Gross unrealized, Gain	1,651	472
Gross unrealized, Loss	0	20
Available-for-sale	23,081	15,431
Held-to-maturity:
Amortized cost	2,937	3,818
Gross unrealized, Gains	121	28
Gross unrealized, Losses	0	3
Securities held-to-maturity	3,058	3,843
Sovereign debt/sovereign guaranteed
Available-for-sale:
Amortized cost	12,791	12,548
Gross unrealized, Gain	128	109
Gross unrealized, Loss	9	11
Available-for-sale	12,910	12,646
Held-to-maturity:
Amortized cost	919	756
Gross unrealized, Gains	37	31
Gross unrealized, Losses	0	0
Securities held-to-maturity	956	787
Agency commercial mortgage-backed securities (“MBS”)
Available-for-sale:
Amortized cost	9,315	9,231
Gross unrealized, Gain	510	203
Gross unrealized, Loss	20	17
Available-for-sale	9,805	9,417
Held-to-maturity:
Amortized cost	1,868	1,326
Gross unrealized, Gains	84	21
Gross unrealized, Losses	0	3
Securities held-to-maturity	1,952	1,344
Foreign covered bonds
Available-for-sale:
Amortized cost	5,284	4,189
Gross unrealized, Gain	24	15
Gross unrealized, Loss	36	7
Available-for-sale	5,272	4,197
Held-to-maturity:
Amortized cost	77	79
Gross unrealized, Gains	0	0
Gross unrealized, Losses	0	0
Securities held-to-maturity	77	79
Collateralized loan obligations (“CLOs”)
Available-for-sale:
Amortized cost	4,341	4,078
Gross unrealized, Gain	1	1
Gross unrealized, Loss	244	16
Available-for-sale	4,098	4,063
Commercial paper/certificates of deposit (“CDs”)
Available-for-sale:
Amortized cost	2,813
Gross unrealized, Gain	3
Gross unrealized, Loss	2
Available-for-sale	2,814
Held-to-maturity:
Amortized cost	651
Gross unrealized, Gains	0
Gross unrealized, Losses	0
Securities held-to-maturity	651
Supranational
Available-for-sale:
Amortized cost	4,316	3,697
Gross unrealized, Gain	38	18
Gross unrealized, Loss	6	6
Available-for-sale	4,348	3,709
Held-to-maturity:
Amortized cost		27
Gross unrealized, Gains		0
Gross unrealized, Losses		0
Securities held-to-maturity		27
Foreign government agencies
Available-for-sale:
Amortized cost	2,736	2,638
Gross unrealized, Gain	31	7
Gross unrealized, Loss	3	2
Available-for-sale	2,764	2,643
Non-agency commercial MBS
Available-for-sale:
Amortized cost	2,501	2,134
Gross unrealized, Gain	35	46
Gross unrealized, Loss	63	2
Available-for-sale	2,473	2,178
Other ABS
Available-for-sale:
Amortized cost	2,257	2,141
Gross unrealized, Gain	6	7
Gross unrealized, Loss	43	5
Available-for-sale	2,220	2,143
U.S. government agencies
Available-for-sale:
Amortized cost	2,059	1,890
Gross unrealized, Gain	156	61
Gross unrealized, Loss	2	2
Available-for-sale	2,213	1,949
Held-to-maturity:
Amortized cost	1,244	1,023
Gross unrealized, Gains	7	1
Gross unrealized, Losses	3	2
Securities held-to-maturity	1,248	1,022
Non-agency RMBS
Available-for-sale:
Amortized cost	1,404	1,038
Gross unrealized, Gain	114	202
Gross unrealized, Loss	43	7
Available-for-sale	1,475	1,233
Held-to-maturity:
Amortized cost	75	80
Gross unrealized, Gains	3	4
Gross unrealized, Losses	5	1
Securities held-to-maturity	73	83
Non-agency RMBS | Grantor Trust
Available-for-sale:
Available-for-sale	535	640
State and political subdivisions
Available-for-sale:
Amortized cost	967	1,017
Gross unrealized, Gain	20	27
Gross unrealized, Loss	2	0
Available-for-sale	985	1,044
Held-to-maturity:
Amortized cost	16	17
Gross unrealized, Gains	0	0
Gross unrealized, Losses	0	0
Securities held-to-maturity	16	17
Corporate bonds
Available-for-sale:
Amortized cost	804	832
Gross unrealized, Gain	16	21
Gross unrealized, Loss	2	0
Available-for-sale	818	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
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Securities [Abstract]
Realized gross gains	$ 12	$ 5	$ 5
Realized gross losses	(3)	(29)	(4)
Recognized gross impairments	0	(1)	0
Total net securities gains (losses)	$ 9	$ (25)	$ 1

Securities - Pre-Tax Net Securi

Securities - Pre-Tax Net Securities Gains (Losses) by Type (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Total net securities gains (losses)	$ 9	$ (25)	$ 1
U.S. Treasury
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Total net securities gains (losses)	5	(17)	1
Other
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Total net securities gains (losses)	$ 4	$ (8)	$ 0

Securities - Narrative (Details

Securities - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019	Jan. 01, 2020
Debt Securities, Available-for-sale [Line Items]
Debt securities, available-for-sale, allowance for credit loss	$ 15
AOCI, transfers from AFS to HTM Securities, gross unrealized losses	$ 59	$ 65
Cumulative Effect, Period Of Adoption, Adjustment | ASU 2016-13
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 ($)	Mar. 31, 2020	Dec. 31, 2019
Available-for-sale:
Less than 12 months, Fair value	$ 23,073,000,000	$ 23,012,000,000
Less than 12 months, Unrealized losses	440,000,000	92,000,000
12 months or more, Fair value	8,998,000,000	10,774,000,000
12 months or more, Unrealized losses	236,000,000	146,000,000
Total, Fair value	32,071,000,000	33,786,000,000
Total, Unrealized losses	676,000,000	238,000,000
AOCI, transfers from AFS to HTM Securities, gross unrealized losses, greater than 12 months	59,000,000	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	3,900,000,000
Agency RMBS
Available-for-sale:
Less than 12 months, Fair value	5,200,000,000	8,373,000,000
Less than 12 months, Unrealized losses	53,000,000	33,000,000
12 months or more, Fair value	6,969,000,000	5,912,000,000
12 months or more, Unrealized losses	166,000,000	110,000,000
Total, Fair value	12,169,000,000	14,285,000,000
Total, Unrealized losses	219,000,000	143,000,000
U.S. Treasury
Available-for-sale:
Less than 12 months, Fair value		1,976,000,000
Less than 12 months, Unrealized losses		16,000,000
12 months or more, Fair value		766,000,000
12 months or more, Unrealized losses		4,000,000
Total, Fair value		2,742,000,000
Total, Unrealized losses		20,000,000
Sovereign debt/sovereign guaranteed
Available-for-sale:
Less than 12 months, Fair value	2,801,000,000	4,045,000,000
Less than 12 months, Unrealized losses	9,000,000	10,000,000
12 months or more, Fair value	104,000,000	225,000,000
12 months or more, Unrealized losses	0	1,000,000
Total, Fair value	2,905,000,000	4,270,000,000
Total, Unrealized losses	9,000,000	11,000,000
Agency commercial mortgage-backed securities (“MBS”)
Available-for-sale:
Less than 12 months, Fair value	1,440,000,000	1,960,000,000
Less than 12 months, Unrealized losses	14,000,000	12,000,000
12 months or more, Fair value	522,000,000	775,000,000
12 months or more, Unrealized losses	6,000,000	5,000,000
Total, Fair value	1,962,000,000	2,735,000,000
Total, Unrealized losses	20,000,000	17,000,000
Foreign covered bonds
Available-for-sale:
Less than 12 months, Fair value	2,934,000,000	1,009,000,000
Less than 12 months, Unrealized losses	33,000,000	4,000,000
12 months or more, Fair value	255,000,000	690,000,000
12 months or more, Unrealized losses	3,000,000	3,000,000
Total, Fair value	3,189,000,000	1,699,000,000
Total, Unrealized losses	36,000,000	7,000,000
Collateralized loan obligations (“CLOs”)
Available-for-sale:
Less than 12 months, Fair value	3,456,000,000	1,066,000,000
Less than 12 months, Unrealized losses	189,000,000	2,000,000
12 months or more, Fair value	554,000,000	1,499,000,000
12 months or more, Unrealized losses	41,000,000	14,000,000
Total, Fair value	4,010,000,000	2,565,000,000
Total, Unrealized losses	230,000,000	16,000,000
Commercial paper/certificates of deposit (“CDs”)
Available-for-sale:
Less than 12 months, Fair value	1,225,000,000
Less than 12 months, Unrealized losses	2,000,000
12 months or more, Fair value	0
12 months or more, Unrealized losses	0
Total, Fair value	1,225,000,000
Total, Unrealized losses	2,000,000
Supranational
Available-for-sale:
Less than 12 months, Fair value	1,663,000,000	1,336,000,000
Less than 12 months, Unrealized losses	6,000,000	6,000,000
12 months or more, Fair value	203,000,000	360,000,000
12 months or more, Unrealized losses	0	0
Total, Fair value	1,866,000,000	1,696,000,000
Total, Unrealized losses	6,000,000	6,000,000
Foreign government agencies
Available-for-sale:
Less than 12 months, Fair value	942,000,000	1,706,000,000
Less than 12 months, Unrealized losses	3,000,000	2,000,000
12 months or more, Fair value	50,000,000	47,000,000
12 months or more, Unrealized losses	0	0
Total, Fair value	992,000,000	1,753,000,000
Total, Unrealized losses	3,000,000	2,000,000
Non-agency commercial MBS
Available-for-sale:
Less than 12 months, Fair value	1,050,000,000	525,000,000
Less than 12 months, Unrealized losses	60,000,000	2,000,000
12 months or more, Fair value	37,000,000	45,000,000
12 months or more, Unrealized losses	3,000,000	0
Total, Fair value	1,087,000,000	570,000,000
Total, Unrealized losses	63,000,000	2,000,000
Other ABS
Available-for-sale:
Less than 12 months, Fair value	1,283,000,000	456,000,000
Less than 12 months, Unrealized losses	38,000,000	3,000,000
12 months or more, Fair value	193,000,000	305,000,000
12 months or more, Unrealized losses	5,000,000	2,000,000
Total, Fair value	1,476,000,000	761,000,000
Total, Unrealized losses	43,000,000	5,000,000
U.S. government agencies
Available-for-sale:
Less than 12 months, Fair value	73,000,000	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	73,000,000	377,000,000
Total, Unrealized losses	2,000,000	2,000,000
Non-agency RMBS
Available-for-sale:
Less than 12 months, Fair value	737,000,000	101,000,000
Less than 12 months, Unrealized losses	27,000,000	0
12 months or more, Fair value	96,000,000	113,000,000
12 months or more, Unrealized losses	12,000,000	7,000,000
Total, Fair value	833,000,000	214,000,000
Total, Unrealized losses	39,000,000	7,000,000
Non-agency RMBS | Grantor Trust
Available-for-sale:
Less than 12 months, Fair value	97,000,000	2,000,000
Less than 12 months, Unrealized losses	7,000,000	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	37,000,000	0
Less than 12 months, Unrealized losses	2,000,000	0
12 months or more, Fair value	15,000,000	16,000,000
12 months or more, Unrealized losses	0	0
Total, Fair value	52,000,000	16,000,000
Total, Unrealized losses	2,000,000	0
Corporate bonds
Available-for-sale:
Less than 12 months, Fair value	232,000,000	82,000,000
Less than 12 months, Unrealized losses	2,000,000	0
12 months or more, Fair value	0	21,000,000
12 months or more, Unrealized losses	0	0
Total, Fair value	232,000,000	103,000,000
Total, Unrealized losses	$ 2,000,000	$ 0

Securities - Debt Securities, H

Securities - Debt Securities, Held-to-maturity, Credit Quality Indicator (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 37,305	$ 34,483
Unrealized gain (loss)	$ 1,113
Ratings (percent)	0.00%
Agency RMBS
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 29,518	27,357
Unrealized gain (loss)	$ 869
Ratings (percent)	0.00%
U.S. Treasury
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 2,937	3,818
Unrealized gain (loss)	$ 121
Ratings (percent)	0.00%
Agency commercial mortgage-backed securities (“MBS”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 1,868	1,326
Unrealized gain (loss)	$ 84
Ratings (percent)	0.00%
U.S. government agencies
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 1,244	1,023
Unrealized gain (loss)	$ 4
Ratings (percent)	0.00%
Sovereign debt/sovereign guaranteed
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 919	756
Unrealized gain (loss)	$ 37
Ratings (percent)	0.00%
Commercial paper/certificates of deposit (“CDs”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 651
Unrealized gain (loss)	$ 0
Ratings (percent)	0.00%
Supranational
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost		27
Foreign covered bonds
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 77	79
Unrealized gain (loss)	$ 0
Ratings (percent)	0.00%
Non-agency RMBS
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 75	80
Unrealized gain (loss)	$ (2)
Ratings (percent)	0.00%
State and political subdivisions
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Amortized cost	$ 16	$ 17
Unrealized gain (loss)	$ 0
Ratings (percent)	85.00%
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- | Agency commercial mortgage-backed securities (“MBS”)
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- | Sovereign debt/sovereign guaranteed
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- | Foreign covered bonds
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)	43.00%
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- | Agency commercial mortgage-backed securities (“MBS”)
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- | Sovereign debt/sovereign guaranteed
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- | Foreign covered bonds
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)	3.00%
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 | Agency commercial mortgage-backed securities (“MBS”)
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 | Sovereign debt/sovereign guaranteed
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 | Foreign covered bonds
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 | State and political subdivisions
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
A1/A1
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	2.00%
A1/A1 | Agency RMBS
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
A1/A1 | U.S. Treasury
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
A1/A1 | Agency commercial mortgage-backed securities (“MBS”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
A1/A1 | U.S. government agencies
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
A1/A1 | Sovereign debt/sovereign guaranteed
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
A1/A1 | Commercial paper/certificates of deposit (“CDs”)
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	100.00%
A1/A1 | Foreign covered bonds
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
A1/A1 | Non-agency RMBS
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
A1/A1 | State and political subdivisions
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	0.00%
AAA/ AA-
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	98.00%
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- | Agency commercial mortgage-backed securities (“MBS”)
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- | Sovereign debt/sovereign guaranteed
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- | Foreign covered bonds
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)	42.00%
AAA/ AA- | State and political subdivisions
Debt Securities, Held-to-maturity, Credit Quality Indicator [Line Items]
Ratings (percent)	7.00%

Securities - Maturity Distribut

Securities - Maturity Distribution and Yield of Investment Securities Portfolio (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Securities available-for-sale, Amount:
One year or less	$ 12,921
Over 1 through 5 years	28,378
Over 5 through 10 years	10,292
Over 10 years	3,615
Total	101,968	$ 88,550
Securities held-to-maturity, Amount:
One year or less	758
Over 1 through 5 years	4,246
Over 5 through 10 years	445
Over 10 years	395
Amortized cost	37,305	34,483
Mortgage-backed securities
Securities available-for-sale, Amount:
Without single maturity date	40,444
Securities held-to-maturity, Amount:
Mortgage-backed securities	31,461
Asset-backed securities
Securities available-for-sale, Amount:
Without single maturity date	6,318
U.S. Treasury
Securities available-for-sale, Amount:
One year or less	1,353
Over 1 through 5 years	12,422
Over 5 through 10 years	6,009
Over 10 years	3,297
Total	$ 23,081	15,431
Securities available-for-sale (Yield):
One year or less	2.58%
Over 1 through 5 years	1.53%
Over 5 through 10 years	1.69%
Over 10 years	3.11%
Total	1.86%
Securities held-to-maturity, Amount:
One year or less	$ 0
Over 1 through 5 years	2,937
Over 5 through 10 years	0
Over 10 years	0
Amortized cost	$ 2,937	3,818
Securities held-to-maturity (Yield):
One year or less	0.00%
Over 1 through 5 years	1.98%
Over 5 through 10 years	0.00%
Over 10 years	0.00%
Total	1.98%
U.S. government agencies
Securities available-for-sale, Amount:
One year or less	$ 26
Over 1 through 5 years	474
Over 5 through 10 years	1,594
Over 10 years	119
Total	$ 2,213	1,949
Securities available-for-sale (Yield):
One year or less	2.46%
Over 1 through 5 years	1.73%
Over 5 through 10 years	2.70%
Over 10 years	2.06%
Total	2.46%
Securities held-to-maturity, Amount:
One year or less	$ 0
Over 1 through 5 years	603
Over 5 through 10 years	259
Over 10 years	382
Amortized cost	$ 1,244	1,023
Securities held-to-maturity (Yield):
One year or less	0.00%
Over 1 through 5 years	1.86%
Over 5 through 10 years	2.30%
Over 10 years	2.43%
Total	2.12%
State and political subdivisions
Securities available-for-sale, Amount:
One year or less	$ 165
Over 1 through 5 years	719
Over 5 through 10 years	88
Over 10 years	13
Total	$ 985	1,044
Securities available-for-sale (Yield):
One year or less	2.93%
Over 1 through 5 years	3.29%
Over 5 through 10 years	2.58%
Over 10 years	2.32%
Total	3.15%
Securities held-to-maturity, Amount:
One year or less	$ 0
Over 1 through 5 years	3
Over 5 through 10 years	0
Over 10 years	13
Amortized cost	$ 16	$ 17
Securities held-to-maturity (Yield):
One year or less	0.00%
Over 1 through 5 years	5.68%
Over 5 through 10 years	0.00%
Over 10 years	4.76%
Total	4.92%
Other bonds, notes and debentures
Securities available-for-sale, Amount:
One year or less	$ 11,377
Over 1 through 5 years	14,763
Over 5 through 10 years	2,601
Over 10 years	186
Total	$ 28,927
Securities available-for-sale (Yield):
One year or less	1.20%
Over 1 through 5 years	0.76%
Over 5 through 10 years	0.65%
Over 10 years	1.67%
Total	0.93%
Securities held-to-maturity, Amount:
One year or less	$ 758
Over 1 through 5 years	703
Over 5 through 10 years	186
Over 10 years	0
Amortized cost	$ 1,647
Securities held-to-maturity (Yield):
One year or less	1.53%
Over 1 through 5 years	0.68%
Over 5 through 10 years	0.69%
Over 10 years	0.00%
Total	1.06%
Mortgage/ asset-backed
Securities available-for-sale, Amount:
Total	$ 46,762
Securities available-for-sale (Yield):
Total	2.53%
Securities held-to-maturity, Amount:
Amortized cost	$ 31,461
Securities held-to-maturity (Yield):
Total	2.88%
Mortgage/ asset-backed | Mortgage-backed securities
Securities available-for-sale, Amount:
Without single maturity date	$ 40,444
Securities available-for-sale (Yield):
Without single maturity date	2.50%
Securities held-to-maturity, Amount:
Mortgage-backed securities	$ 31,461
Securities held-to-maturity (Yield):
Without single maturity date	2.88%
Mortgage/ asset-backed | Asset-backed securities
Securities available-for-sale, Amount:
Without single maturity date	$ 6,318
Securities available-for-sale (Yield):
Without single maturity date	2.70%

Securities - Pledged assets (De

Securities - Pledged assets (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Securities [Abstract]
Pledged assets	$ 131,000	$ 118,000
Pledged collateral for potential borrowings at the Federal Reserve Discount Window	99,000	80,000
Pledged asset, other not separately reported, potential borrowings at FHLB	6,000	6,000
Pledged securities	111,000	98,000
Pledged loans	13,000	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	24,000	29,000
Pledged collateral for potential borrowings at the Federal Reserve	651
Pledged assets permitted to be sold or repledged	132,000	153,000
Market value of securities received as collateral that have been sold or repledged	101,000	107,000
Cash segregated under federal or other regulations	5,000	2,000
Securities segregated under federal or other regulations	$ 5,000	$ 1,000

Loans and asset quality - Loan

Loans and asset quality - Loan Distribution and Industry Concentrations (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 62,368	$ 54,953
Unearned income on lease financings	301	313
Other residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	472	494
Overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans		2,700
Margin loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	13,100	13,400
Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	47,494	42,548
Domestic | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	3,010	1,442
Domestic | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	6,429	5,575
Domestic | Financial institutions
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	6,231	4,852
Domestic | Lease financings
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	472	537
Domestic | Wealth management loans and mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	16,128	16,050
Domestic | Other residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	472	494
Domestic | Overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,851	524
Domestic | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,168	1,167
Domestic | Margin loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	11,733	11,907
Foreign
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	14,874	12,405
Foreign | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	425	347
Foreign | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	22	7
Foreign | Financial institutions
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	7,985	7,626
Foreign | Lease financings
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	582	576
Foreign | Wealth management loans and mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	131	140
Foreign | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	4,347	2,230
Foreign | Margin loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 1,382	$ 1,479

Loans and asset quality - Loans

Loans and asset quality - Loans Additional Information (Details)	3 Months Ended
	Mar. 31, 2020class_of_receivablesegment
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
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 216	$ 224	$ 252
Charge-offs	0	(1)	(11)
Recoveries	0	1	0
Net (charge-offs) recoveries	0	0	(11)
Provision	141	(8)	7
Ending balance	288	216	248
Individually evaluated for impairment:
Loan balance	18	15	100
Allowance for loan losses	0	0	10
Collectively evaluated for impairment:
Loan balance		54,938	53,387
Allowance for loan losses		122	136
Collateral dependent loans	18
Fair value of collateral	26
Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	122
Ending balance	140	122	146
Lending-related commitments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	94
Ending balance	148	94	102
Domestic | Overdrafts
Collectively evaluated for impairment:
Loans		524	654
Domestic | Margin loans
Collectively evaluated for impairment:
Loans		11,907	12,107
Domestic | Other
Collectively evaluated for impairment:
Loans		1,167	1,152
Foreign
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	24	28	32
Charge-offs	0	0	0
Recoveries	0	0	0
Net (charge-offs) recoveries	0	0	0
Provision	0	(4)	(3)
Ending balance	0	24	29
Individually evaluated for impairment:
Loan balance	0	0	0
Allowance for loan losses	0	0	0
Collectively evaluated for impairment:
Loan balance		12,405	11,324
Allowance for loan losses		15	19
Foreign | Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	15
Ending balance	0	15	19
Foreign | Lending-related commitments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	9
Ending balance	0	9	10
Commercial | Domestic
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	60	61	81
Charge-offs	0	0	(11)
Recoveries	0	0	0
Net (charge-offs) recoveries	0	0	(11)
Provision	9	(1)	12
Ending balance	26	60	82
Individually evaluated for impairment:
Loan balance	0	0	96
Allowance for loan losses	0	0	10
Collectively evaluated for impairment:
Loan balance		1,442	1,626
Allowance for loan losses		11	14
Commercial | Domestic | Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	11
Ending balance	13	11	24
Commercial | Domestic | Lending-related commitments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	49
Ending balance	13	49	58
Commercial | Foreign
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	10
Ending balance		10
Commercial real estate | Domestic
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	76	77	75
Charge-offs	0	0	0
Recoveries	0	0	0
Net (charge-offs) recoveries	0	0	0
Provision	118	(1)	(1)
Ending balance	208	76	74
Individually evaluated for impairment:
Loan balance	0	0	0
Allowance for loan losses	0	0	0
Collectively evaluated for impairment:
Loan balance		5,575	4,921
Allowance for loan losses		57	56
Commercial real estate | Domestic | Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	57
Ending balance	83	57	56
Commercial real estate | Domestic | Lending-related commitments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	19
Ending balance	125	19	18
Financial institutions | Domestic
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	20	21	22
Charge-offs	0	0	0
Recoveries	0	0	0
Net (charge-offs) recoveries	0	0	0
Provision	4	(1)	1
Ending balance	18	20	23
Individually evaluated for impairment:
Loan balance	0	0	0
Allowance for loan losses	0	0	0
Collectively evaluated for impairment:
Loan balance		4,852	4,652
Allowance for loan losses		5	10
Financial institutions | Domestic | Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	5
Ending balance	10	5	10
Financial institutions | Domestic | Lending-related commitments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	15
Ending balance	8	15	13
Financial institutions | Foreign
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	10
Ending balance	12	10
Lease financings | Domestic
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	3	3	5
Charge-offs	0	0	0
Recoveries	0	0	0
Net (charge-offs) recoveries	0	0	0
Provision	10	0	(1)
Ending balance	13	3	4
Individually evaluated for impairment:
Loan balance	0	0	0
Allowance for loan losses	0	0	0
Collectively evaluated for impairment:
Loan balance		537	653
Allowance for loan losses		3	4
Lease financings | Domestic | Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	3
Ending balance	13	3	4
Lease financings | Domestic | Lending-related commitments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	0
Ending balance	0	0	0
Lease financings | Foreign
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	4
Ending balance		4
Wealth management loans and mortgages | Domestic
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	20	20	21
Charge-offs	0	0	0
Recoveries	0	0	0
Net (charge-offs) recoveries	0	0	0
Provision	1	0	0
Ending balance	9	20	21
Individually evaluated for impairment:
Loan balance	18	15	4
Allowance for loan losses	0	0	0
Collectively evaluated for impairment:
Loan balance		16,035	15,724
Allowance for loan losses		18	18
Wealth management loans and mortgages | Domestic | Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	18
Ending balance	7	18	18
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
Other residential mortgages | Domestic
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	13	14	16
Charge-offs	0	(1)	0
Recoveries	0	1	0
Net (charge-offs) recoveries	0	0	0
Provision	(1)	(1)	(1)
Ending balance	14	13	15
Individually evaluated for impairment:
Loan balance	0	0	0
Allowance for loan losses	0	0	0
Collectively evaluated for impairment:
Loan balance		494	574
Allowance for loan losses		13	15
Other residential mortgages | Domestic | Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	13
Ending balance	14	13	15
Other residential mortgages | Domestic | Lending-related commitments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	0
Ending balance	0	0	0
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
Individually evaluated for impairment:
Loan balance		0	0
Allowance for loan losses		0	0
Collectively evaluated for impairment:
Loan balance		13,598	13,913
Allowance for loan losses		0	0
All other | Domestic | Loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	0
Ending balance		0	0
All other | Domestic | Lending-related commitments
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 0
Ending balance		$ 0	$ 0

Loans and asset quality - Nonpe

Loans and asset quality - Nonperforming Assets (Details) - Domestic - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Impaired [Line Items]
With an allowance	$ 69
Without an allowance	18
Total nonperforming loans	87	$ 86
With an allowance, Other assets owned	1
Without an allowance, Other assets owned	0
Other assets owned	1	3
With an allowance, Total nonperforming assets	70
Without an allowance, Total nonperforming assets	18
Total nonperforming assets	88	89
Other residential mortgages
Financing Receivable, Impaired [Line Items]
With an allowance	60
Without an allowance	0
Total nonperforming loans	60	62
Wealth management loans and mortgages
Financing Receivable, Impaired [Line Items]
With an allowance	9
Without an allowance	18
Total nonperforming loans	$ 27	$ 24

Loans and asset quality - Past

Loans and asset quality - Past Due Loans (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Past Due [Line Items]
Total past due loans	$ 88	$ 87
30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total past due loans	86	37
60 to 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total past due loans	2	50
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 | Wealth management loans and mortgages
Financing Receivable, Past Due [Line Items]
Total past due loans	78	27
Domestic | Wealth management loans and mortgages | 30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total past due loans	77	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 | Commercial real estate
Financing Receivable, Past Due [Line Items]
Total past due loans	0	18
Domestic | Commercial real estate | 30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total past due loans	0	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
Domestic | Other residential mortgages
Financing Receivable, Past Due [Line Items]
Total past due loans	10	11
Domestic | Other residential mortgages | 30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total past due loans	9	8
Domestic | Other residential mortgages | 60 to 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total past due loans	1	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

Loans and asset quality - Loa_2

Loans and asset quality - Loan Modifications (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2019	Mar. 31, 2019
Other residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding recorded investment post-modification (less than)	$ 1	$ 1

Loans and asset quality - Credi

Loans and asset quality - Credit Risk Profile by Origination (Details) $ in Millions	Mar. 31, 2020USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]
1Q20	$ 3,030
2019	4,727
2018	2,299
2017	3,143
2016	2,951
Prior to 2016	5,586
Amortized cost	34,456
Converted to term loans - Amortized cost	29
Total	56,221
Accrued interest receivable	94
Wealth management mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
1Q20	208
2019	1,139
2018	752
2017	1,438
2016	1,833
Prior to 2016	3,239
Amortized cost	41
Converted to term loans - Amortized cost	0
Total	8,650
Wealth management loans and mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
1Q20	211
2019	1,222
2018	764
2017	1,616
2016	1,891
Prior to 2016	3,333
Amortized cost	7,222
Converted to term loans - Amortized cost	0
Total	16,259
Accrued interest receivable	38
Other residential mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
1Q20	0
2019	0
2018	0
2017	0
2016	0
Prior to 2016	472
Amortized cost	0
Converted to term loans - Amortized cost	0
Total	472
Accrued interest receivable	2
Other loans
Financing Receivable, Credit Quality Indicator [Line Items]
1Q20	5
2019	0
2018	0
2017	0
2016	0
Prior to 2016	0
Amortized cost	1,214
Converted to term loans - Amortized cost	0
Total	1,219
Accrued interest receivable	1
Margin loans
Financing Receivable, Credit Quality Indicator [Line Items]
1Q20	2,260
2019	1,300
2018	0
2017	0
2016	0
Prior to 2016	0
Amortized cost	9,555
Converted to term loans - Amortized cost	0
Total	13,115
Accrued interest receivable	12
Investment grade | Loans receivable
Financing Receivable, Credit Quality Indicator [Line Items]
1Q20	3
2019	83
2018	12
2017	178
2016	58
Prior to 2016	94
Amortized cost	7,049
Converted to term loans - Amortized cost	0
Total	7,477
Non-investment grade | Loans receivable
Financing Receivable, Credit Quality Indicator [Line Items]
1Q20	0
2019	0
2018	0
2017	0
2016	0
Prior to 2016	0
Amortized cost	132
Converted to term loans - Amortized cost	0
Total	132
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
1Q20	61
2019	358
2018	119
2017	600
2016	63
Prior to 2016	0
Amortized cost	2,234
Converted to term loans - Amortized cost	0
Total	3,435
Accrued interest receivable	4
Commercial | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
1Q20	20
2019	286
2018	107
2017	600
2016	57
Prior to 2016	0
Amortized cost	1,994
Converted to term loans - Amortized cost	0
Total	3,064
Commercial | Non-investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
1Q20	41
2019	72
2018	12
2017	0
2016	6
Prior to 2016	0
Amortized cost	240
Converted to term loans - Amortized cost	0
Total	371
Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
1Q20	429
2019	1,548
2018	1,260
2017	730
2016	949
Prior to 2016	688
Amortized cost	818
Converted to term loans - Amortized cost	29
Total	6,451
Accrued interest receivable	11
Commercial real estate | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
1Q20	414
2019	1,412
2018	1,047
2017	624
2016	636
Prior to 2016	640
Amortized cost	586
Converted to term loans - Amortized cost	0
Total	5,359
Commercial real estate | Non-investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
1Q20	15
2019	136
2018	213
2017	106
2016	313
Prior to 2016	48
Amortized cost	232
Converted to term loans - Amortized cost	29
Total	1,092
Financial institutions
Financing Receivable, Credit Quality Indicator [Line Items]
1Q20	64
2019	278
2018	133
2017	125
2016	14
Prior to 2016	189
Amortized cost	13,413
Converted to term loans - Amortized cost	0
Total	14,216
Accrued interest receivable	26
Financial institutions | Investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
1Q20	49
2019	270
2018	133
2017	125
2016	14
Prior to 2016	189
Amortized cost	11,429
Converted to term loans - Amortized cost	0
Total	12,209
Financial institutions | Non-investment grade
Financing Receivable, Credit Quality Indicator [Line Items]
1Q20	15
2019	8
2018	0
2017	0
2016	0
Prior to 2016	0
Amortized cost	1,984
Converted to term loans - Amortized cost	0
Total	2,007
Lease financings
Financing Receivable, Credit Quality Indicator [Line Items]
1Q20	0
2019	21
2018	23
2017	72
2016	34
Prior to 2016	904
Amortized cost	0
Converted to term loans - Amortized cost	0
Total	1,054
Accrued interest receivable	$ 0

Loans and asset quality - Cre_2

Loans and asset quality - Credit Risk Indicators Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019	Sep. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of exposure to investment grade securities	96.00%
Percentage of financial institution exposure secured	79.00%
Percent of financial institution exposure expiring within one year	90.00%
Loans	$ 62,368		$ 54,953
Reverse repos fully secured	1,200
Allowance for credit loss	$ 288	$ 147	216	$ 224	$ 248	$ 252
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)	23.00%
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)	42.00%
Other residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 472		494
Overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans			2,700
Overdraft repayment period	2 days
Margin loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 13,100		13,400
Domestic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	47,494		42,548
Domestic | Wealth management loans and mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	16,128		16,050
Domestic | Other residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	472		494
Purchased mortgages	87
Domestic | Overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,851		524
Domestic | Margin loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 11,733		$ 11,907
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)	9.00%
Overdrafts | Overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 6,147

Goodwill and intangible asset_2

Goodwill and intangible assets - Goodwill (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Goodwill [Roll Forward]
Beginning balance	$ 17,386	$ 17,350
Foreign currency translation	(146)	17
Other	0
Ending balance	17,240	17,367
Investment Services
Goodwill [Roll Forward]
Beginning balance	8,332	8,333
Foreign currency translation	(43)	(5)
Other	47
Ending balance	8,336	8,328
Investment Management
Goodwill [Roll Forward]
Beginning balance	9,007	8,970
Foreign currency translation	(103)	22
Other	0
Ending balance	8,904	8,992
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
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Intangible Assets [Roll Forward]
Beginning Balance	$ 3,107		$ 3,220
Amortization	(26)	$ (28)	(29)
Foreign currency translation	(11)		2
Ending Balance	3,070	3,107	3,193
Investment Services
Intangible Assets [Roll Forward]
Beginning Balance	678		758
Amortization	(18)		(20)
Foreign currency translation	(1)		(1)
Ending Balance	659	678	737
Investment Management
Intangible Assets [Roll Forward]
Beginning Balance	1,580		1,613
Amortization	(8)		(9)
Foreign currency translation	(10)		3
Ending Balance	1,562	1,580	1,607
Other
Intangible Assets [Roll Forward]
Beginning Balance	849		849
Amortization	0		0
Foreign currency translation	0		0
Ending Balance	$ 849	$ 849	$ 849

Goodwill and intangible asset_4

Goodwill and intangible assets - Intangible Assets by Type (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Intangible Assets by Major Class [Line Items]
Gross carrying amount	$ 4,863	$ 4,881
Accumulated amortization	(1,793)	(1,774)
Net carrying amount	3,070	3,107	$ 3,193	$ 3,220
Finite-lived Intangible Assets
Intangible Assets by Major Class [Line Items]
Gross carrying amount	2,288	2,296
Accumulated amortization	(1,793)	(1,774)
Net carrying amount	$ 495	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	$ 1,515	1,520
Accumulated amortization	(1,227)	(1,214)
Net carrying amount	$ 288	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	$ 709	712
Accumulated amortization	(548)	(544)
Net carrying amount	$ 161	168
Finite-lived Intangible Assets | Customer relationships | Weighted Average
Intangible Assets by Major Class [Line Items]
Remaining weighted- average amortization period	11 years
Finite-lived Intangible Assets | Other
Intangible Assets by Major Class [Line Items]
Gross carrying amount	$ 64	64
Accumulated amortization	(18)	(16)
Net carrying amount	$ 46	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	$ 2,575	2,585
Net carrying amount	2,575	2,585
Indefinite-lived Intangible Assets | Tradenames
Intangible Assets by Major Class [Line Items]
Gross carrying amount	1,291	1,293
Net carrying amount	1,291	1,293
Indefinite-lived Intangible Assets | Customer relationships
Intangible Assets by Major Class [Line Items]
Gross carrying amount	1,284	1,292
Net carrying amount	$ 1,284	$ 1,292

Goodwill and intangible asset_5

Goodwill and intangible assets - Estimated Annual Amortization Expense (Details) $ in Millions	Mar. 31, 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
	Mar. 31, 2020USD ($)reporting_unit
Goodwill and Intangible Assets Disclosure [Abstract]
Number of reporting units (reporting unit) | reporting_unit	6
Goodwill impairment | $	$ 0

Other assets - Components of Ot

Other assets - Components of Other Assets (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Other Assets [Abstract]
Fails to deliver	$ 8,200	$ 1,671
Corporate/bank-owned life insurance	5,240	5,219
Accounts receivable	4,649	3,802
Software	1,678	1,590
Prepaid pension assets	1,502	1,464
Renewable energy investments	1,119	1,144
Equity in a joint venture and other investments	1,091	1,102
Qualified affordable housing project investments	993	1,024
Prepaid expense	515	491
Federal Reserve Bank stock	466	466
Fair value of hedging derivatives	187	21
Seed capital	141	184
Income taxes receivable	47	388
Other	1,618	1,655
Total other assets	27,446	20,221
Federal Home Loan Bank stock, at cost	$ 20	$ 22

Other assets - Non-Readily Mark

Other assets - Non-Readily Marketable Equity Securities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Other Assets [Abstract]
Equity securities without readily determinable fair value, amount	$ 101	$ 61
Equity securities without readily determinable fair value, upward price adjustment, annual amount	4	1	$ 0
Equity securities without readily determinable fair value, downward price adjustment, annual amount	0	(2)	0
Equity securities without readily determinable fair value, net adjustment, annual amount	4	$ (1)	$ 0
Equity securities without readily determinable fair value, upward price adjustment, cumulative amount amount	36
Equity securities without readily determinable fair value, downward price adjustment, cumulative amount	(4)
Equity securities without readily determinable fair value, net price adjustment, cumulative amount	$ 32

Other assets - Qualified Afford

Other assets - Qualified Affordable Housing Project Investments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Other Assets [Abstract]
Qualified affordable housing project investments	$ 993	$ 1,024
Qualified affordable housing project investments, commitment	390	422
Qualified affordable housing project commitment - 2020	114
Qualified affordable housing project commitment - 2021	181
Qualified affordable housing project commitment - 2022	83
Qualified affordable housing project commitment - 2023	6
Qualified affordable housing project commitment - 2024	2
Qualified affordable housing project commitment - 2025 and thereafter	4
Tax credits and other tax benefits	38	31	$ 39
Amortization expense included in the provision for income taxes	$ 31	$ 24	$ 32

Other assets - Seed Capital and

Other assets - Seed Capital and Private Equity Investments (Details) - Other Assets - NAV - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Line Items]
Fair value	$ 158	$ 181
Unfunded commitments	52	55
Seed capital
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Line Items]
Fair value	51	59
Unfunded commitments	0	0
Private equitiy investments (SBICs)
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Line Items]
Fair value	80	89
Unfunded commitments	52	55
Other
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Line Items]
Fair value	27	33
Unfunded commitments	$ 0	$ 0
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
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Total fee and other revenue	$ 3,332	$ 3,946	$ 3,032
Income from consolidated investment management funds, net of noncontrolling interests	980	1,440	946
Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	2,965	2,916	2,783
Fee and other revenue - not in scope of ASC 606	347	1,038	265
Total fee and other revenue	3,312	3,954	3,048
Asset servicing fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	1,139	1,128	1,093
Clearing services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	470	421	398
Issuer services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	263	264	251
Treasury services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	149	148	132
Total investment services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	2,021	1,961	1,874
Investment management and performance fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	863	887	841
Financing-related fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	28	12	17
Distribution and servicing | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	31	34	31
Investment and other income | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	22	22	20
Investment Services | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	2,102	2,029	1,938
Fee and other revenue - not in scope of ASC 606	334	207	223
Total fee and other revenue	2,436	2,236	2,161
Investment Services | Asset servicing fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	1,127	1,117	1,081
Investment Services | Clearing services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	470	421	398
Investment Services | Issuer services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	263	264	251
Investment Services | Treasury services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	149	148	132
Investment Services | Total investment services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	2,009	1,950	1,862
Investment Services | Investment management and performance fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	5	5	4
Investment Services | Financing-related fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	28	12	17
Investment Services | Distribution and servicing | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	(12)	(10)	(14)
Investment Services | Investment and other income | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	72	72	69
Investment Management | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	878	905	857
Fee and other revenue - not in scope of ASC 606	(32)	19	12
Total fee and other revenue	846	924	869
Income from consolidated investment management funds, net of noncontrolling interests	(20)	8	16
Investment Management | Asset servicing fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	23	25	20
Investment Management | Clearing services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	0	0	0
Investment Management | Issuer services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	0	0	0
Investment Management | Treasury services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	0	0	0
Investment Management | Total investment services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	23	25	20
Investment Management | Investment management and performance fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	862	886	841
Investment Management | Financing-related fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	0	0	0
Investment Management | Distribution and servicing | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	43	44	45
Investment Management | Investment and other income | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	(50)	(50)	(49)
Other | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	(15)	(18)	(12)
Fee and other revenue - not in scope of ASC 606	45	812	30
Total fee and other revenue	30	794	18
Other | Asset servicing fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	(11)	(14)	(8)
Other | Clearing services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	0	0	0
Other | Issuer services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	0	0	0
Other | Treasury services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	0	0	0
Other | Total investment services fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	(11)	(14)	(8)
Other | Investment management and performance fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	(4)	(4)	(4)
Other | Financing-related fees | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	0	0	0
Other | Distribution and servicing | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	0	0	0
Other | Investment and other income | Operating segments
Disaggregation of Revenue [Line Items]
Total fee revenue - contract revenue	$ 0	$ 0	$ 0

Contract revenue - Narrative (D

Contract revenue - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Capitalized Contract Cost [Line Items]
Contract with customer, asset	$ 2,600,000,000	$ 2,400,000,000
Contract assets representing accrued revenues not yet billed	48,000,000	32,000,000
Contract with customer, liability	194,000,000	168,000,000
Contract with customer, liability, revenue recognized	50,000,000
Capitalized contract cost, impairment	0
Incremental costs for obtaining contracts
Capitalized Contract Cost [Line Items]
Capitalized contract costs	$ 89,000,000	86,000,000
Capitalized contract cost, amortization period	9 years
Capitalized contract cost, amortization	$ 5,000,000	5,000,000	$ 5,000,000
Costs to fulfill contract
Capitalized Contract Cost [Line Items]
Capitalized contract costs	14,000,000	16,000,000
Capitalized contract cost, amortization	$ 1,000,000	$ 1,000,000	$ 1,000,000
Costs to fulfill contract | Minimum
Capitalized Contract Cost [Line Items]
Capitalized contract cost, amortization period	7 years
Costs to fulfill contract | Maximum
Capitalized Contract Cost [Line Items]
Capitalized contract cost, amortization period	9 years

Net interest revenue (Details)

Net interest revenue (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2020		Dec. 31, 2019	Mar. 31, 2019
Interest revenue
Deposits with the Federal Reserve and other central banks		$ 80		$ 94	$ 139
Deposits with banks		58		65	63
Federal funds sold and securities purchased under resale agreements		396		452	474
Margin loans		87		96	135
Non-margin loans		309		328	355
Securities:
Taxable		594		639	706
Exempt from federal income taxes		6		7	12
Total securities		600		646	718
Trading securities		40		40	36
Total interest revenue		1,570		1,721	1,920
Interest expense
Deposits		240		334	391
Federal funds purchased and securities sold under repurchase agreements		275		291	331
Trading liabilities		7		9	7
Other borrowed funds		4		5	24
Commercial paper		6		7	8
Customer payables		30		40	70
Long-term debt		194		220	248
Total interest expense		756		906	1,079
Net interest revenue		814		815	841
Provision for credit losses	[2]	169	[1]	(8)	7	[1]
Net interest revenue after provision for credit losses		$ 645		$ 823	$ 834
[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]	The provision for credit losses for the quarter ended March 31, 2020 relates to the financial instruments within the scope of Accounting Standards Update (“ASU”) 2016-13, Financial Instruments - Credit Losses: Measurement of Credit Losses On Financial Instruments. 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
	Mar. 31, 2020	Mar. 31, 2019
Pension Benefits | Domestic
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0
Interest cost	39	44
Expected return on assets	80	84
Other	22	13
Net periodic benefit (credit) cost	(19)	(27)
Pension Benefits | Foreign
Defined Benefit Plan Disclosure [Line Items]
Service cost	3	3
Interest cost	7	8
Expected return on assets	10	11
Other	3	0
Net periodic benefit (credit) cost	3	0
Healthcare Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0
Interest cost	1	2
Expected return on assets	1	2
Other	(1)	(1)
Net periodic benefit (credit) cost	$ (1)	$ (1)

Income taxes - Narrative (Detai

Income taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 265	$ 373	$ 237
Effective tax rate	21.60%	20.50%	19.90%
Tax reserves	$ 176	$ 173
Impact on effective tax rate if tax reserves were unnecessary	176
Accrued interest, related to income taxes in the balance sheet	35
Additional tax expense related to interest	4		$ 2
Reasonably possible decrease in uncertain tax positions within the next 12 months, if a re-evaluation is required	$ 100

Variable interest entities an_3

Variable interest entities and securitization - Assets and Liabilities of VIEs (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Variable Interest Entity [Line Items]
Nonredeemable noncontrolling interests	$ 94	$ 102
VME classification of carrying amount, assets	44	50
VME classification of carrying amount, liabilities	1	1
Noncontrolling interest in VME	1	1
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Trading assets	615	629
Other assets	14	16
Total assets	629	645
Other liabilities	398	388
Total liabilities	398	388
Nonredeemable noncontrolling interests	94	102
Variable Interest Entity, Primary Beneficiary | Investment Management funds
Variable Interest Entity [Line Items]
Trading assets	215	229
Other assets	14	16
Total assets	229	245
Other liabilities	1	1
Total liabilities	1	1
Nonredeemable noncontrolling interests	94	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	397	387
Total liabilities	397	387
Nonredeemable noncontrolling interests	$ 0	$ 0

Variable interest entities an_4

Variable interest entities and securitization - Non-consolidated VIEs (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Variable Interest Entity [Line Items]
Assets	$ 468,155	$ 381,508
Liabilities	426,776	339,780
Variable Interest Entity, Not Primary Beneficiary | Securities available-for-sale
Variable Interest Entity [Line Items]
Assets	180	208
Liabilities	0	0
Maximum loss exposure	180	208
Variable Interest Entity, Not Primary Beneficiary | Other
Variable Interest Entity [Line Items]
Assets	2,287	2,400
Liabilities	390	422
Maximum loss exposure	$ 2,677	$ 2,822

Preferred stock - Narrative (De

Preferred stock - Narrative (Details) - $ / shares	Mar. 31, 2020	Dec. 31, 2019
Stockholders' Equity Note [Abstract]
Preferred stock, shares authorized (shares)	100,000,000	100,000,000
Preferred stock, par value (usd per share)	$ 0.01	$ 0.01

Preferred stock - Summary (Deta

Preferred stock - Summary (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Class of Stock [Line Items]
Total shares issued and outstanding (shares)	35,826	35,826
Carrying value	$ 3,542	$ 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 and including 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 and including 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%

Preferred stock - Summary of Pr

Preferred stock - Summary of Preferred Dividends Paid (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Class of Stock [Line Items]
Preferred dividends paid	$ 36	$ 49	$ 36
Series A Preferred Stock
Class of Stock [Line Items]
Depositary shares per share	1.00%
Dividend paid per share (usd per share)	$ 1,011.11	$ 1,011.11	$ 1,000
Preferred dividends paid	$ 5	$ 5	$ 5
Series C Preferred Stock
Class of Stock [Line Items]
Depositary shares per share	0.025%
Dividend paid per share (usd per share)	$ 1,300	$ 1,300	$ 1,300
Preferred dividends paid	$ 8	$ 8	$ 8
Series D Preferred Stock
Class of Stock [Line Items]
Depositary shares per share	1.00%
Dividend paid per share (usd per share)		$ 2,250
Preferred dividends paid	$ 0	$ 11	0
Series E Preferred Stock
Class of Stock [Line Items]
Depositary shares per share	1.00%
Dividend paid per share (usd per share)		$ 2,475
Preferred dividends paid	$ 0	$ 25	$ 0
Series F Preferred Stock
Class of Stock [Line Items]
Depositary shares per share	1.00%
Dividend paid per share (usd per share)	$ 2,312.50		$ 2,312.50
Preferred dividends paid	$ 23	$ 0	$ 23

Other comprehensive income (l_3

Other comprehensive income (loss) - Components (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Pre-tax amount
Total other comprehensive income (loss), Pre-tax amount		$ (21)	$ 113	$ 357
Tax (expense) benefit
Total other comprehensive income (loss), Tax (expense) benefit		(165)	146	(84)
After-tax amount
Total other comprehensive (loss) income, net of tax	[1]	(186)	259	273
Foreign currency translation
Pre-tax amount
Other comprehensive income (loss), Pre-tax amount		(265)	292	27
Total other comprehensive income (loss), Pre-tax amount		(265)	292	27
Tax (expense) benefit
Other comprehensive income (loss), Tax (expense) benefit		(104)	96	2
Total other comprehensive income (loss), Tax (expense) benefit		(104)	96	2
After-tax amount
Other comprehensive income (loss), After-tax amount		(369)	388	29
Total other comprehensive (loss) income, net of tax		(369)	388	29
Unrealized gain (loss) on assets available-for-sale
Pre-tax amount
Other comprehensive income (loss), Pre-tax amount		243	(114)	322
Reclassification adjustment, Pre-tax amount		(9)	25	(1)
Total other comprehensive income (loss), Pre-tax amount		234	(89)	321
Tax (expense) benefit
Other comprehensive income (loss), Tax (expense) benefit		(60)	37	(83)
Reclassification adjustment, Tax (expense) benefit		2	(6)	0
Total other comprehensive income (loss), Tax (expense) benefit		(58)	31	(83)
After-tax amount
Other comprehensive income (loss), After-tax amount		183	(77)	239
Reclassification adjustment, After-tax amount		(7)	19	(1)
Total other comprehensive (loss) income, net of tax		176	(58)	238
Defined benefit plans
Pre-tax amount
Reclassification adjustment, Pre-tax amount		24	14	13
Total other comprehensive income (loss), Pre-tax amount		24	(97)	2
Tax (expense) benefit
Reclassification adjustment, Tax (expense) benefit		(6)	(10)	(3)
Total other comprehensive income (loss), Tax (expense) benefit		(6)	22	(1)
After-tax amount
Reclassification adjustment, After-tax amount		18	4	10
Total other comprehensive (loss) income, net of tax		18	(75)	1
Prior service cost arising during the period
Pre-tax amount
Other comprehensive income (loss), Pre-tax amount		0	(1)	0
Tax (expense) benefit
Other comprehensive income (loss), Tax (expense) benefit		0	0	0
After-tax amount
Other comprehensive income (loss), After-tax amount		0	(1)	0
Net (loss) gain arising during the period
Pre-tax amount
Other comprehensive income (loss), Pre-tax amount		0	(110)	(11)
Tax (expense) benefit
Other comprehensive income (loss), Tax (expense) benefit		0	32	2
After-tax amount
Other comprehensive income (loss), After-tax amount		0	(78)	(9)
Unrealized gain (loss) on cash flow hedges
Pre-tax amount
Other comprehensive income (loss), Pre-tax amount		(13)	17	6
Reclassification adjustment, Pre-tax amount		(1)	(10)	1
Total other comprehensive income (loss), Pre-tax amount		(14)	7	7
Tax (expense) benefit
Other comprehensive income (loss), Tax (expense) benefit		3	(5)	(4)
Reclassification adjustment, Tax (expense) benefit		0	2	2
Total other comprehensive income (loss), Tax (expense) benefit		3	(3)	(2)
After-tax amount
Other comprehensive income (loss), After-tax amount		(10)	12	2
Reclassification adjustment, After-tax amount		(1)	(8)	3
Total other comprehensive (loss) income, net of tax		(11)	4	5
Unrealized gain (loss) on cash flow hedges | Interest expense
Pre-tax amount
Reclassification adjustment, Pre-tax amount		0	(8)	0
Tax (expense) benefit
Reclassification adjustment, Tax (expense) benefit		0	2	0
After-tax amount
Reclassification adjustment, After-tax amount		0	(6)	0
Unrealized gain (loss) on cash flow hedges | Staff expense
Pre-tax amount
Reclassification adjustment, Pre-tax amount		(1)	(2)	1
Tax (expense) benefit
Reclassification adjustment, Tax (expense) benefit		0	0	2
After-tax amount
Reclassification adjustment, After-tax amount		$ (1)	$ (2)	$ 3
[1]	Other comprehensive (loss) income attributable to The Bank of New York Mellon Corporation shareholders was $(184) million for the quarter ended March 31, 2020 , $255 million for the quarter ended Dec. 31, 2019 and $271 million for the quarter ended March 31, 2019 .

Fair value measurement - Assets

Fair value measurement - Assets and Liabilities on Recurring Basis (Details) - USD ($) $ in Millions		Mar. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		$ 101,968	$ 88,550
Trading assets:
Total derivatives fair value		16,211	9,061
Effect of master netting agreements		(10,328)	(5,819)
Total derivative assets		5,883	3,242
Trading liabilities:
Total derivatives fair value		18,154	9,206
Effect of master netting agreements		(11,864)	(5,415)
Derivative liabilities		6,290	3,791
Long-term debt		397	387
Investment management funds
Trading assets:
Trading assets		215	229
Other assets		14	16
Total assets		229	245
Trading liabilities:
Total liabilities		1	1
Interest rate contracts
Trading assets:
Effect of master netting agreements		(3,047)	(1,792)
Trading liabilities:
Effect of master netting agreements		(3,479)	(1,986)
Foreign exchange contracts
Trading assets:
Effect of master netting agreements		(7,272)	(4,021)
Trading liabilities:
Effect of master netting agreements		(8,382)	(3,428)
Equity contracts
Trading assets:
Effect of master netting agreements		(9)	(6)
Trading liabilities:
Effect of master netting agreements		(3)	(1)
Agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		26,691	27,043
U.S. Treasury
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		23,081	15,431
Sovereign debt/sovereign guaranteed
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		12,910	12,646
Agency commercial mortgage-backed securities (“MBS”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		9,805	9,417
Foreign covered bonds
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		5,272	4,197
Supranational
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		4,348	3,709
Collateralized loan obligations (“CLOs”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		4,098	4,063
Commercial paper/certificates of deposit (“CDs”)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		2,814
Other ABS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		2,220	2,143
U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		2,213	1,949
Non-agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		1,475	1,233
State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		985	1,044
Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale		818	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		16,024	9,040
Trading liabilities:
Total derivatives fair value		17,181	8,599
Not designated as hedging | Interest rate contracts
Trading assets:
Total derivatives fair value		6,043	3,690
Trading liabilities:
Total derivatives fair value		5,275	3,250
Not designated as hedging | Foreign exchange contracts
Trading assets:
Total derivatives fair value		9,964	5,331
Trading liabilities:
Total derivatives fair value		11,854	5,340
Not designated as hedging | Equity contracts
Trading assets:
Total derivatives fair value		15	19
Trading liabilities:
Total derivatives fair value		51	5
Designated as hedging
Trading assets:
Total derivatives fair value		187	21
Trading liabilities:
Total derivatives fair value		973	607
Designated as hedging | Interest rate contracts
Trading assets:
Total derivatives fair value		0	0
Trading liabilities:
Total derivatives fair value		927	350
Designated as hedging | Foreign exchange contracts
Trading assets:
Total derivatives fair value		187	21
Trading liabilities:
Total derivatives fair value		46	257
Operating segments
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available-for-sale	[1]	101,968	88,550
Trading assets:
Trading assets		12,918	13,571
Other assets		527	419
Trading liabilities:
Long-term debt		397	387
Operating segments | Investment management funds
Trading assets:
Total assets		229	245
Trading liabilities:
Total liabilities		1	1
Assets measured at fair value on a recurring basis
Trading assets:
Effect of master netting agreements		(10,328)	(5,819)
Total assets		115,642	102,785
Trading liabilities:
Effect of master netting agreements		(11,864)	(5,415)
Total liabilities		7,996	5,836
Assets measured at fair value on a recurring basis | Level 1
Trading assets:
Total assets		$ 34,442	$ 29,576
Percentage of total assets prior to netting		27.00%	27.00%
Trading liabilities:
Total liabilities		$ 1,180	$ 1,560
Percentage of total liabilities prior to netting		6.00%	14.00%
Assets measured at fair value on a recurring basis | Level 2
Trading assets:
Total assets		$ 91,370	$ 78,847
Percentage of total assets prior to netting		73.00%	73.00%
Trading liabilities:
Total liabilities		$ 18,680	$ 9,691
Percentage of total liabilities prior to netting		94.00%	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		$ 535	$ 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		$ 101,968	$ 88,550
Trading assets:
Debt instruments		4,991	5,811
Equity instruments		2,231	4,539
Effect of master netting agreements		(10,328)	(5,819)
Trading assets		12,918	13,571
Other assets		182	217
Total assets		115,413	102,540
Trading liabilities:
Total trading liabilities		6,625	4,841
Effect of master netting agreements		(11,864)	(5,415)
Long-term debt		397	387
Total other liabilities – derivative liabilities designated as hedging		973
Total liabilities		7,995	5,835
Assets measured at fair value on a recurring basis | Operating segments | Investment management funds
Trading assets:
Total assets		229	245
Trading liabilities:
Total liabilities		1	1
Assets measured at fair value on a recurring basis | Operating segments | Interest rate contracts
Trading assets:
Effect of master netting agreements		(3,047)	(1,792)
Trading liabilities:
Effect of master netting agreements		(3,479)	(1,986)
Assets measured at fair value on a recurring basis | Operating segments | Foreign exchange contracts
Trading assets:
Effect of master netting agreements		(7,272)	(4,021)
Trading liabilities:
Effect of master netting agreements		(8,382)	(3,428)
Assets measured at fair value on a recurring basis | Operating segments | Equity contracts
Trading assets:
Effect of master netting agreements		(9)	(6)
Trading liabilities:
Effect of master netting agreements		(3)	(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		26,691	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		23,081	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		12,910	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		9,805	9,417
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		5,272	4,197
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		4,348	3,709
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		4,098	4,063
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		2,814
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		2,764	2,643
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		2,473	2,178
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		2,220	2,143
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		2,213	1,949
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		1,475	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		985	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		818	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		5,696	3,221
Trading liabilities:
Effect of master netting agreements		(11,864)
Derivative liabilities		5,317	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		2,996	1,898
Trading liabilities:
Derivative liabilities		1,796	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		2,692	1,310
Trading liabilities:
Derivative liabilities		3,472	1,912
Assets measured at fair value on a recurring basis | Operating segments | Not designated as hedging | Equity contracts
Trading assets:
Total derivative assets		8	13
Trading liabilities:
Derivative liabilities		49	8
Assets measured at fair value on a recurring basis | Operating segments | Designated as hedging
Trading assets:
Total derivative assets		187	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		927	350
Assets measured at fair value on a recurring basis | Operating segments | Designated as hedging | Foreign exchange contracts
Trading assets:
Total derivative assets		187	21
Trading liabilities:
Derivative liabilities		46	257
Assets measured at fair value on a recurring basis | Operating segments | Debt instruments
Trading liabilities:
Total trading liabilities		1,244	1,584
Assets measured at fair value on a recurring basis | Operating segments | Equity instruments
Trading liabilities:
Total trading liabilities		64	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		30,151	23,215
Trading assets:
Debt instruments		1,812	1,568
Equity instruments		2,231	4,539
Trading assets		4,057	6,111
Other assets		46	38
Total assets		$ 34,254	$ 29,364
Percentage of total assets prior to netting		27.00%	27.00%
Trading liabilities:
Total trading liabilities		$ 1,180	$ 1,559
Long-term debt		0	0
Total other liabilities – derivative liabilities designated as hedging		0
Total liabilities		$ 1,180	$ 1,559
Percentage of total liabilities prior to netting		6.00%	14.00%
Assets measured at fair value on a recurring basis | Operating segments | Level 1 | Investment management funds
Trading assets:
Total assets		$ 188	$ 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		23,081	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		7,070	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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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		14	4
Trading liabilities:
Total derivatives fair value		15	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		8	4
Trading liabilities:
Total derivatives fair value		14	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		6	0
Trading liabilities:
Total derivatives fair value		1	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		1,101	1,477
Assets measured at fair value on a recurring basis | Operating segments | Level 1 | Equity instruments
Trading liabilities:
Total trading liabilities		64	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		71,817	65,335
Trading assets:
Debt instruments		3,179	4,243
Equity instruments		0	0
Trading assets		19,189	13,279
Other assets		136	179
Total assets		$ 91,329	$ 78,814
Percentage of total assets prior to netting		73.00%	73.00%
Trading liabilities:
Total trading liabilities		$ 17,309	$ 8,697
Long-term debt		397	387
Total other liabilities – derivative liabilities designated as hedging		973
Total liabilities		$ 18,679	$ 9,691
Percentage of total liabilities prior to netting		94.00%	86.00%
Assets measured at fair value on a recurring basis | Operating segments | Level 2 | Investment management funds
Trading assets:
Total assets		$ 41	$ 33
Trading liabilities:
Total liabilities		1	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		26,691	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		5,840	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		9,805	9,417
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		5,272	4,197
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		4,348	3,709
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		4,098	4,063
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		2,814
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		2,764	2,643
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		2,473	2,178
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		2,220	2,143
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		2,213	1,949
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		1,475	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		985	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		818	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		16,010	9,036
Trading liabilities:
Total derivatives fair value		17,166	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		6,035	3,686
Trading liabilities:
Total derivatives fair value		5,261	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		9,964	5,331
Trading liabilities:
Total derivatives fair value		11,854	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		51	6
Assets measured at fair value on a recurring basis | Operating segments | Level 2 | Designated as hedging
Trading assets:
Total derivatives fair value		187	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		927	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		187	21
Trading liabilities:
Total derivatives fair value		46	257
Assets measured at fair value on a recurring basis | Operating segments | Level 2 | Debt instruments
Trading liabilities:
Total trading liabilities		143	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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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		$ 158	$ 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	Mar. 31, 2020	Dec. 31, 2019
Non-agency RMBS | Origination in 2004 and Earlier, 2005, 2006 and 2007 through 2019
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 535	$ 640
Non-agency RMBS
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 1,475	$ 1,233
Non-agency RMBS | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	48.00%	25.00%
Non-agency RMBS | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	6.00%	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	44.00%	63.00%
Non-agency RMBS | 2007-2020
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 826	$ 464
Non-agency RMBS | 2007-2020 | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	79.00%	55.00%
Non-agency RMBS | 2007-2020 | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	1.00%	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	20.00%	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	22.00%	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	78.00%	79.00%
Non-agency RMBS | 2005
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 258	$ 305
Non-agency RMBS | 2005 | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	5.00%	5.00%
Non-agency RMBS | 2005 | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	2.00%	2.00%
Non-agency RMBS | 2005 | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	8.00%	8.00%
Non-agency RMBS | 2005 | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	85.00%	85.00%
Non-agency RMBS | 2004 and earlier
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 147	$ 173
Non-agency RMBS | 2004 and earlier | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	22.00%	22.00%
Non-agency RMBS | 2004 and earlier | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	23.00%	24.00%
Non-agency RMBS | 2004 and earlier | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	6.00%	4.00%
Non-agency RMBS | 2004 and earlier | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	49.00%	50.00%
Non-agency commercial MBS | 2009-2020 | Domestic
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 2,473	$ 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	$ 5,272	$ 4,197
Foreign covered bonds | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100.00%	100.00%
Foreign covered bonds | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	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	$ 2,207	$ 1,798
Foreign covered bonds | Canada | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	100.00%	100.00%
Foreign covered bonds | Canada | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	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	$ 1,109	$ 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	$ 605	$ 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 | Germany
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 465	$ 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 | Norway
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 495	$ 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 | Other
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 391	$ 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	$ 12,910	$ 12,646
Sovereign Debt | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	71.00%	73.00%
Sovereign Debt | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	6.00%	5.00%
Sovereign Debt | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	22.00%	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	$ 345	$ 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	$ 2,971	$ 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	$ 2,168	$ 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	$ 1,577	$ 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	$ 1,546	$ 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	4.00%	6.00%
Sovereign Debt | Spain | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	96.00%	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	$ 1,390	$ 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	$ 768	$ 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	$ 462	$ 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	$ 387	$ 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 | Austria
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 347	$ 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	$ 294	$ 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	$ 655	$ 590
Sovereign Debt | Other | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	39.00%	29.00%
Sovereign Debt | Other | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	39.00%	48.00%
Sovereign Debt | Other | BBB/ BBB-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	0.00%	0.00%
Sovereign Debt | Other | BB and lower
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	22.00%	23.00%
Foreign government agencies
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 2,764	$ 2,643
Foreign government agencies | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	95.00%	95.00%
Foreign government agencies | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	5.00%	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 | Germany
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 1,161	$ 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 | Netherlands
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 632	$ 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	$ 481	$ 387
Foreign government agencies | Other | AAA/ AA-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	72.00%	67.00%
Foreign government agencies | Other | A/ A-
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Ratings	28.00%	33.00%
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 | Finland
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 240	$ 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%
Foreign government agencies | Sweden
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Total carrying value	$ 250	$ 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%
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	$ 113	$ 134

Fair value measurement - Asse_2

Fair value measurement - Assets on Nonrecurring Basis (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 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	56	58
Other assets	102	64
Total assets	158	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	56	58
Other assets	102	64
Total assets	158	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	Mar. 31, 2020	Dec. 31, 2019
Assets:
Securities held-to-maturity	$ 38,418	$ 34,805
Liabilities:
Long-term debt	397	387
Estimated fair value
Assets:
Interest-bearing deposits with the Federal Reserve and other central banks	146,535	95,042
Interest-bearing deposits with banks	22,689	14,832
Federal funds sold and securities purchased under resale agreements	27,363	30,182
Securities held-to-maturity	38,418	34,805
Loans	61,482	54,194
Other financial assets	6,289	6,063
Total assets	302,776	235,118
Liabilities:
Noninterest-bearing deposits	96,600	57,630
Interest-bearing deposits	239,459	200,846
Federal funds purchased and securities sold under repurchase agreements	13,128	11,401
Payables to customers and broker-dealers	24,016	18,758
Commercial paper	1,121	3,959
Borrowings	1,767	917
Long-term debt	27,521	27,858
Total liabilities	403,612	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	4,014	4,630
Loans	0	0
Other financial assets	5,091	4,830
Total assets	9,105	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	146,535	95,042
Interest-bearing deposits with banks	22,689	14,832
Federal funds sold and securities purchased under resale agreements	27,363	30,182
Securities held-to-maturity	34,404	30,175
Loans	61,482	54,194
Other financial assets	1,198	1,233
Total assets	293,671	225,658
Liabilities:
Noninterest-bearing deposits	96,600	57,630
Interest-bearing deposits	239,459	200,846
Federal funds purchased and securities sold under repurchase agreements	13,128	11,401
Payables to customers and broker-dealers	24,016	18,758
Commercial paper	1,121	3,959
Borrowings	1,767	917
Long-term debt	27,521	27,858
Total liabilities	403,612	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 financial assets	0	0
Total assets	0	0
Liabilities:
Noninterest-bearing deposits	0	0
Interest-bearing deposits	0	0
Federal funds purchased and securities sold under repurchase agreements	0	0
Payables to customers and broker-dealers	0	0
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	146,535	95,042
Interest-bearing deposits with banks	22,672	14,811
Federal funds sold and securities purchased under resale agreements	27,363	30,182
Securities held-to-maturity	37,305	34,483
Loans	61,174	53,718
Other financial assets	6,289	6,063
Total assets	301,338	234,299
Liabilities:
Noninterest-bearing deposits	96,600	57,630
Interest-bearing deposits	240,117	201,836
Federal funds purchased and securities sold under repurchase agreements	13,128	11,401
Payables to customers and broker-dealers	24,016	18,758
Commercial paper	1,121	3,959
Borrowings	1,767	917
Long-term debt	27,097	27,114
Total liabilities	$ 403,846	$ 321,615

Fair value option - Assets and

Fair value option - Assets and Liabilities (Details) - Investment Management funds - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Assets of consolidated investment management funds:
Trading assets	$ 215	$ 229
Other assets	14	16
Total assets	229	245
Liabilities of consolidated investment management funds:
Other liabilities	1	1
Total liabilities	$ 1	$ 1

Fair value option - Narrative (

Fair value option - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Fair value option of long-term debt	$ 240
Long-term debt, fair value	$ 397	$ 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
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 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	$ (10)	$ (1)	$ (5)

Derivative instruments - Narrat

Derivative instruments - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 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	$ 168,000,000
Gain or (loss) recognized in income on derivatives	$ (15,000,000)	$ 22,000,000	$ (6,000,000)
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	$ 30,000,000	63,000,000
Foreign exchange contracts | Net investment hedging
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Hedged financial instruments, notional amount of derivative	7,200,000,000
Foreign exchange contracts | Forecasted Foreign Currency | Cash flow hedges
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Hedged financial instruments, notional amount of derivative	$ 291,000,000
Original maturities, maximum, of hedged instruments	12 months
Pre-tax gain (loss) recognized in OCI related to cash flow hedges	$ (10,000,000)
Securities available-for-sale | Interest rate swap
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Hedged financial instruments	16,500,000,000
Hedged financial instruments, notional amount of derivative	16,500,000,000
Long-term debt
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Hedged financial instruments	13,900,000,000
Long-term debt | Interest rate swap
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Hedged financial instruments, notional amount of derivative	$ 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	$ (41,000,000)	$ 13,000,000	18,000,000
Securities available-for-sale | Foreign exchange contracts
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Gain from components excluded from assessment of fair value hedge effectiveness, net	$ 1,000,000		$ 1,000,000

Derivative instruments - Gains

Derivative instruments - Gains (Losses) Related to Hedging Derivative Portfolio Recognized in the Income Statement (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain recognized in the consolidated income statement due to fair value and cash flow hedging relationships	$ (15)	$ 22	$ (6)
Interest rate contracts | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (loss) on cash flow hedges	0	8	0
Interest rate contracts | Long-term debt | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (loss) recognized on derivatives	714	(145)	185
Gain or (loss) recognized on hedged item	(708)	144	(184)
Interest rate contracts | Securities available-for-sale | Interest revenue
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (loss) recognized on derivatives	(1,033)	324	(383)
Gain or (loss) recognized on hedged item	1,011	(311)	376
FX contracts | Staff expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (loss) on cash flow hedges	1	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
FX contracts | Securities available-for-sale | Other revenue
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (loss) recognized on derivatives	7	6	6
Gain or (loss) recognized on hedged item	$ (7)	$ (6)	$ (5)

Derivative instruments - Impact

Derivative instruments - Impact of Hedging Derivatives Used in Net Investment Hedging Relationships (Details) - FX contracts - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (loss) recognized in accumulated OCI on derivatives	$ 437	$ (341)	$ (6)
Net interest revenue
Derivative Instruments, Gain (Loss) [Line Items]
Gain or (loss) reclassified from accumulated OCI into income	$ 0	$ 0	$ 0

Derivative instruments - Hedged

Derivative instruments - Hedged Items in Fair Value Hedging Relationships (Details) - Fair value hedging - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Long-term debt
Derivative [Line Items]
Carrying amount of hedged asset or liability, Long-term debt	$ 14,907,000,000	$ 13,945,000,000
Hedged liability, discontinued fair value hedge, cumulative decrease	(178,000,000)	(200,000,000)
Hedged liability, fair value hedge, cumulative increase (decrease)	849,000,000	116,000,000
Securities available-for-sale
Derivative [Line Items]
Carrying amount of hedged asset or liability, Available-for-sale securities	16,559,000,000	13,792,000,000
Hedge accounting basis adjustment increase (decrease), Available-for-sale securities	1,846,000,000	687,000,000
Hedge accounting basis adjustment increase (decrease), discontinued hedges	$ 210,000,000	53,000,000
Not designated as hedging | Securities available-for-sale | Foreign exchange contracts
Derivative [Line Items]
Hedged financial instruments, carrying amount		$ 142,000,000

Derivative instruments - Impa_2

Derivative instruments - Impact of Derivative Instruments on the Balance Sheet (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Asset derivatives fair value
Total derivatives fair value	$ 16,211	$ 9,061
Effect of master netting agreements	(10,328)	(5,819)
Fair value after effect of master netting agreements	5,883	3,242
Liability derivatives fair value
Total derivatives fair value	18,154	9,206
Effect of master netting agreements	(11,864)	(5,415)
Fair value after effect of master netting agreements	6,290	3,791
Derivative asset, collateral, obligation to return cash, offset	1,320	1,022
Derivative liability, collateral, right to reclaim cash, offset	2,856	618
Interest rate contracts
Asset derivatives fair value
Effect of master netting agreements	(3,047)	(1,792)
Liability derivatives fair value
Effect of master netting agreements	(3,479)	(1,986)
Foreign exchange contracts
Asset derivatives fair value
Effect of master netting agreements	(7,272)	(4,021)
Liability derivatives fair value
Effect of master netting agreements	(8,382)	(3,428)
Equity contracts
Asset derivatives fair value
Effect of master netting agreements	(9)	(6)
Liability derivatives fair value
Effect of master netting agreements	(3)	(1)
Designated as hedging
Asset derivatives fair value
Total derivatives fair value	187	21
Liability derivatives fair value
Total derivatives fair value	973	607
Designated as hedging | Interest rate contracts
Notional value
Notional amount of hedge	30,356	28,365
Asset derivatives fair value
Total derivatives fair value	0	0
Liability derivatives fair value
Total derivatives fair value	927	350
Designated as hedging | Foreign exchange contracts
Notional value
Notional amount of hedge	7,524	8,390
Asset derivatives fair value
Total derivatives fair value	187	21
Liability derivatives fair value
Total derivatives fair value	46	257
Not designated as hedging
Asset derivatives fair value
Total derivatives fair value	16,024	9,040
Liability derivatives fair value
Total derivatives fair value	17,181	8,599
Not designated as hedging | Interest rate contracts
Notional value
Notional amount of hedge	273,595	306,790
Asset derivatives fair value
Total derivatives fair value	6,043	3,690
Liability derivatives fair value
Total derivatives fair value	5,275	3,250
Not designated as hedging | Foreign exchange contracts
Notional value
Notional amount of hedge	924,891	848,961
Asset derivatives fair value
Total derivatives fair value	9,964	5,331
Liability derivatives fair value
Total derivatives fair value	11,854	5,340
Not designated as hedging | Equity contracts
Notional value
Notional amount of hedge	1,269	3,189
Asset derivatives fair value
Total derivatives fair value	15	19
Liability derivatives fair value
Total derivatives fair value	51	5
Not designated as hedging | Credit contracts
Notional value
Notional amount of hedge	165	165
Asset derivatives fair value
Total derivatives fair value	2	0
Liability derivatives fair value
Total derivatives fair value	$ 1	$ 4

Derivative instruments - Revenu

Derivative instruments - Revenue from Foreign Exchange and Other Trading (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Foreign exchange	$ 253	$ 138	$ 160
Other trading revenue	66	30	10
Total foreign exchange and other trading revenue	$ 319	$ 168	$ 170

Derivative instruments - Contra

Derivative instruments - Contracts Falling under Early Termination Provisions (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Credit Derivatives [Line Items]
Aggregate fair value of OTC derivatives in net liability positions	$ 8,050	$ 3,442
Collateral posted	8,299	3,671
A3 | A-
Credit Derivatives [Line Items]
Aggregate fair value of OTC derivatives in net liability positions	106	56
Baa2 | BBB
Credit Derivatives [Line Items]
Aggregate fair value of OTC derivatives in net liability positions	1,213	608
Ba1 | BB plus
Credit Derivatives [Line Items]
Aggregate fair value of OTC derivatives in net liability positions	$ 4,766	$ 2,084

Derivative instruments - Offset

Derivative instruments - Offsetting (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Derivative Asset
Derivatives subject to netting arrangements, Gross assets recognized	$ 13,102	$ 7,264
Total derivatives subject to netting arrangements, Gross amounts offset in the balance sheet	10,328	5,819
Derivatives subject to netting arrangements, Net assets recognized in the balance sheet	2,774	1,445
Total derivatives, Gross amounts not offset in the balance sheet, Financial instruments	501	251
Total derivatives, Gross amounts not offset in the balance sheet, Cash collateral received	0	0
Derivative assets subject to netting arrangements, Net amount	2,273	1,194
Total derivatives not subject to netting arrangements	3,109	1,797
Total derivatives, Gross assets recognized	16,211	9,061
Fair value after effect of master netting agreements	5,883	3,242
Total derivatives, Net amount	5,382	2,991
Reverse repurchase agreements, Gross assets recognized	97,971	112,355
Reverse repurchase agreements, Gross amounts offset in the balance sheet	80,203	93,794
Reverse repurchase agreements, Net assets recognized on the balance sheet	17,768	18,561
Reverse repurchase agreements, Gross amounts not offset in the balance sheet, Financial instruments	17,759	18,554
Reverse repurchase agreements, Gross amounts not offset in the balance sheet, Cash collateral received	0	0
Reverse repurchase agreements, Net amount	9	7
Securities borrowing, Gross assets recognized	9,613	11,621
Securities borrowing, Net assets recognized on the balance sheet	9,613	11,621
Securities borrowing, Gross amounts not offset in the balance sheet, Financial instruments	9,055	11,278
Securities borrowing, Net amount	558	343
Total, Gross assets recognized	123,795	133,037
Total, Gross amounts offset in the balance sheet	90,531	99,613
Total, Net assets recognized on the balance sheet	33,264	33,424
Total, Gross amounts not offset in the balance sheet, Financial instruments	27,315	30,083
Total, Gross amounts not offset in the balance sheet, Cash collateral received	0	0
Total, Net amount	5,949	3,341
Derivative Liability
Derivatives subject to netting arrangements, Gross liabilities recognized	16,913	8,428
Derivatives subject to netting arrangements, Gross amounts offset in the balance sheet	11,864	5,415
Derivatives subject to netting arrangements, Net liabilities recognized in the balance sheet	5,049	3,013
Total derivatives, Gross amounts not offset in the balance sheet, Financial instruments	1,997	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	3,052	1,398
Total derivatives not subject to netting arrangements	1,241	778
Total derivatives, Gross liabilities recognized	18,154	9,206
Fair value after effect of master netting agreements	6,290	3,791
Total derivatives, Net amount	4,293	2,176
Repurchase agreements, Gross liabilities recognized	92,057	104,451
Repurchase agreements, Gross amounts offset in the balance sheet	80,203	93,794
Repurchase agreements, Net liabilities recognized on the balance sheet	11,854	10,657
Repurchase agreements, Gross amounts not offset in the balance sheet, Financial instruments	11,823	10,657
Repurchase agreements, Gross amounts not offset in the balance sheet, Cash collateral pledged	0	0
Repurchase agreements, Net amount	31	0
Securities lending, Gross liabilities recognized	750	718
Securities lending, Net liabilities recognized on the balance sheet	750	718
Securities lending, Gross amounts not offset in the balance sheet, Financial instruments	717	694
Securities lending, Net amount	33	24
Total, Gross liabilities recognized	110,961	114,375
Total, Gross amounts offset in the balance sheet	92,067	99,209
Total, Net liabilities recognized on the balance sheet	18,894	15,166
Total, Gross amounts not offset in the balance sheet, Financial instruments	14,537	12,966
Total, Gross amounts not offset in the balance sheet, Cash collateral pledged	0	0
Total, Net amount	4,357	2,200
Interest rate contracts
Derivative Asset
Derivatives subject to netting arrangements, Gross assets recognized	4,103	2,394
Total derivatives subject to netting arrangements, Gross amounts offset in the balance sheet	3,047	1,792
Derivatives subject to netting arrangements, Net assets recognized in the balance sheet	1,056	602
Total derivatives, Gross amounts not offset in the balance sheet, Financial instruments	369	207
Total derivatives, Gross amounts not offset in the balance sheet, Cash collateral received	0	0
Derivative assets subject to netting arrangements, Net amount	687	395
Derivative Liability
Derivatives subject to netting arrangements, Gross liabilities recognized	6,181	3,550
Derivatives subject to netting arrangements, Gross amounts offset in the balance sheet	3,479	1,986
Derivatives subject to netting arrangements, Net liabilities recognized in the balance sheet	2,702	1,564
Total derivatives, Gross amounts not offset in the balance sheet, Financial instruments	1,452	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	1,250	25
Foreign exchange contracts
Derivative Asset
Derivatives subject to netting arrangements, Gross assets recognized	8,984	4,861
Total derivatives subject to netting arrangements, Gross amounts offset in the balance sheet	7,272	4,021
Derivatives subject to netting arrangements, Net assets recognized in the balance sheet	1,712	840
Total derivatives, Gross amounts not offset in the balance sheet, Financial instruments	132	44
Total derivatives, Gross amounts not offset in the balance sheet, Cash collateral received	0	0
Derivative assets subject to netting arrangements, Net amount	1,580	796
Derivative Liability
Derivatives subject to netting arrangements, Gross liabilities recognized	10,705	4,873
Derivatives subject to netting arrangements, Gross amounts offset in the balance sheet	8,382	3,428
Derivatives subject to netting arrangements, Net liabilities recognized in the balance sheet	2,323	1,445
Total derivatives, Gross amounts not offset in the balance sheet, Financial instruments	545	74
Total derivatives, Gross amounts not offset in the balance sheet, Cash collateral pledged	0	0
Derivative liabilities subject to netting arrangements, Net amount	1,778	1,371
Equity and other contracts
Derivative Asset
Derivatives subject to netting arrangements, Gross assets recognized	15	9
Total derivatives subject to netting arrangements, Gross amounts offset in the balance sheet	9	6
Derivatives subject to netting arrangements, Net assets recognized in the balance sheet	6	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	6	3
Derivative Liability
Derivatives subject to netting arrangements, Gross liabilities recognized	27	5
Derivatives subject to netting arrangements, Gross amounts offset in the balance sheet	3	1
Derivatives subject to netting arrangements, Net liabilities recognized in the balance sheet	24	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	$ 24	$ 2

Derivative instruments - Secure

Derivative instruments - Secured Borrowings (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	$ 92,057	$ 104,451
Securities lending	750	718
Total borrowings	92,807	105,169
Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	88,231	99,953
Securities lending	750	718
Total borrowings	88,981	100,671
Up to 30 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	681	1,323
Securities lending	0	0
Total borrowings	681	1,323
30 days or more
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	3,145	3,175
Securities lending	0	0
Total borrowings	3,145	3,175
U.S. Treasury
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	82,520	94,798
U.S. Treasury | Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	82,520	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
U.S. government agencies
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	643	610
Securities lending	7	19
U.S. government agencies | Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	633	594
Securities lending	7	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	10	0
Securities lending	0	0
Agency RMBS
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	3,871	5,008
Agency RMBS | Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	3,794	4,234
Agency RMBS | Up to 30 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	0	774
Agency RMBS | 30 days or more
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	77	0
Corporate bonds
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	1,822	2,119
Corporate bonds | Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	542	266
Corporate bonds | Up to 30 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	0	236
Corporate bonds | 30 days or more
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	1,280	1,617
Other debt securities
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	2,219	1,307
Securities lending	196	201
Other debt securities | Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	527	40
Securities lending	196	201
Other debt securities | Up to 30 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	681	188
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	1,011	1,079
Securities lending	0	0
Equity securities
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	982	609
Securities lending	547	498
Equity securities | Overnight and continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	215	31
Securities lending	547	498
Equity securities | Up to 30 days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items]
Repurchase agreements	0	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	767	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	Mar. 31, 2020	Dec. 31, 2019
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Securities lending indemnifications, joint venture	$ 56,000	$ 57,000
Invested in reverse repurchase agreements
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Cash collateral invested in indemnified repurchase agreements	38,000	37,000
Lending commitments
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet credit risks	47,732	49,119
Standby letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet credit risks	2,328	2,298
Off-balance sheet credit risks participations	146	146
Commercial letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet credit risks	113	74
Securities lending indemnifications
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet credit risks	$ 421,691	$ 408,378

Commitments and contingent li_4

Commitments and contingent liabilities - Narrative (Details)	Dec. 19, 2019claim	Dec. 17, 2015lawsuit	Mar. 31, 2020USD ($)claim	Dec. 31, 2019USD ($)	Dec. 31, 2009claim
Commitments and Contingencies Disclosure [Line Items]
Lending commitment maturing in less than one year			$ 32,000,000,000
Lending commitment maturing in one to five years			15,400,000,000
Lending commitment maturing over five years			$ 314,000,000
Collateralization percentage generally required for a securities lending transaction with indemnification against broker default			102.00%
Securities lending indemnifications, secured amount of collateral			$ 443,000,000,000	$ 428,000,000,000
Securities lending indemnifications, joint venture			56,000,000,000	57,000,000,000
Securities lending indemnifications, collateral joint venture			$ 60,000,000,000	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
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			186,000,000	184,000,000
SBLC expiring within one year			1,700,000,000
SBLC expiring within one to five years			677,000,000
SBLC expiring after five years			1,000,000
Off-balance sheet credit risks			2,328,000,000	2,298,000,000
Commercial letters of credit
Commitments and Contingencies Disclosure [Line Items]
Off-balance sheet credit risks			113,000,000	74,000,000
Unsettled Repurchase Agreements
Commitments and Contingencies Disclosure [Line Items]
Guarantor obligations, maximum exposure, undiscounted			0
Unsettled Reverse Repurchase Agreements
Commitments and Contingencies Disclosure [Line Items]
Guarantor obligations, maximum exposure, undiscounted			28,300,000,000
Operating segments
Commitments and Contingencies Disclosure [Line Items]
Allowance for lending-related commitments			148,000,000
Off-Balance Sheet, Credit Loss, Liability			$ 148,000,000	$ 94,000,000
Federal Court | Mortgage-Securitization Trusts Proceedings
Commitments and Contingencies Disclosure [Line Items]
Number of lawsuits or class actions pending | claim			4
Court of Appeals | Mortgage-Securitization Trusts Proceedings
Commitments and Contingencies Disclosure [Line Items]
Number of lawsuits or class actions pending | claim			1
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	Mar. 31, 2020	Dec. 31, 2019
Investment grade
Concentration Risk [Line Items]
Standby letters of credit by investment grade	91.00%	90.00%
Non-investment grade
Concentration Risk [Line Items]
Standby letters of credit by investment grade	9.00%	10.00%

Commitments and contingent li_6

Commitments and contingent liabilities - Significant Industry Concentrations Related to Credit Exposure (Details) $ in Billions	Mar. 31, 2020USD ($)
Financial institutions
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	$ 14.2
Unfunded commitments	35.3
Total exposure	49.5
Financial institutions | Securities industry
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	4.2
Unfunded commitments	24.5
Total exposure	28.7
Financial institutions | Banks
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	7.5
Unfunded commitments	1.1
Total exposure	8.6
Financial institutions | Asset managers
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	1.3
Unfunded commitments	6.5
Total exposure	7.8
Financial institutions | Insurance
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	0.3
Unfunded commitments	2.4
Total exposure	2.7
Financial institutions | Government
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	0.1
Unfunded commitments	0.2
Total exposure	0.3
Financial institutions | Other
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	0.8
Unfunded commitments	0.6
Total exposure	1.4
Commercial
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	3.4
Unfunded commitments	11
Total exposure	14.4
Commercial | Manufacturing
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	1.4
Unfunded commitments	3.7
Total exposure	5.1
Commercial | Services and other
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	1.3
Unfunded commitments	2.9
Total exposure	4.2
Commercial | Energy and utilities
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	0.7
Unfunded commitments	3.5
Total exposure	4.2
Commercial | Media and telecom
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loans	0
Unfunded commitments	0.9
Total exposure	$ 0.9

Lines of business - Narrative (

Lines of business - Narrative (Details)	3 Months Ended
	Mar. 31, 2020business
Segment Reporting [Abstract]
Number of principal businesses (business)	2

Supplemental information to t_3

Supplemental information to the Consolidated Statement of Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Supplemental Cash Flow Information [Abstract]
Change in assets of consolidated investment management funds	$ 16	$ 11
Change in liabilities of consolidated investment management funds	0	1
Change in nonredeemable noncontrolling interests of consolidated investment management funds	8	21
Securities purchased not settled	1,667	1,407
Securities matured not settled	9	680
Premises and equipment/capitalized software funded by finance lease obligations	0	13
Premises and equipment/operating lease obligations	15	1,281
Investment redemptions not settled	$ 37	$ 0

Lines of business - Contributio

Lines of business - Contribution of Segments to Overall Profitability (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2020		Dec. 31, 2019	Mar. 31, 2019
Segment Reporting Information [Line Items]
Total fee and other revenue		$ 3,332		$ 3,946	$ 3,032
Net interest revenue (expense)		814		815	841
Provision for credit losses	[2]	169	[1]	(8)	7	[1]
Income from consolidated investment management funds, net of noncontrolling interests		980		1,440	946
Investment income (loss), net		(38)		17	26
Net income (loss) attributable to noncontrolling interests		(18)		9	10
Investment Management
Segment Reporting Information [Line Items]
Net income (loss) attributable to noncontrolling interests		(18)		9	10
Operating segments
Segment Reporting Information [Line Items]
Total fee and other revenue		3,312		3,954	3,048
Net interest revenue (expense)		814		815	841
Total revenue		4,126		4,769	3,889
Provision for credit losses		169		(8)	7
Noninterest expense		2,712		2,964	2,699
Income (loss) before taxes		$ 1,245		$ 1,813	$ 1,183
Pre-tax operating margin		30.00%		38.00%	31.00%
Average assets		$ 385,278		$ 354,341	$ 336,165
Operating segments | Investment Services
Segment Reporting Information [Line Items]
Total fee and other revenue		2,436		2,236	2,161
Net interest revenue (expense)		806		778	804
Total revenue		3,242		3,014	2,965
Provision for credit losses		149		(5)	8
Noninterest expense		1,987		2,179	1,981
Income (loss) before taxes		$ 1,106		$ 840	$ 976
Pre-tax operating margin		34.00%		28.00%	33.00%
Average assets		$ 304,089		$ 278,098	$ 256,034
Operating segments | Investment Management
Segment Reporting Information [Line Items]
Total fee and other revenue		846		924	869
Net interest revenue (expense)		52		47	67
Total revenue		898		971	936
Provision for credit losses		9		0	1
Noninterest expense		695		731	669
Income (loss) before taxes		$ 194		$ 240	$ 266
Pre-tax operating margin		22.00%		25.00%	28.00%
Average assets		$ 30,543		$ 28,481	$ 31,857
Income from consolidated investment management funds, net of noncontrolling interests		(20)		8	16
Investment income (loss), net		(38)		17	26
Net income (loss) attributable to noncontrolling interests		(18)		9	10
Operating segments | Other
Segment Reporting Information [Line Items]
Total fee and other revenue		30		794	18
Net interest revenue (expense)		(44)		(10)	(30)
Total revenue		(14)		784	(12)
Provision for credit losses		11		(3)	(2)
Noninterest expense		30		54	49
Income (loss) before taxes		(55)		733	(59)
Average assets		$ 50,646		$ 47,762	$ 48,274
[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]	The provision for credit losses for the quarter ended March 31, 2020 relates to the financial instruments within the scope of Accounting Standards Update (“ASU”) 2016-13, Financial Instruments - Credit Losses: Measurement of Credit Losses On Financial Instruments. See Note 2 of the Notes to Consolidated Financial Statements for additional information.

Supplemental information to t_4

Supplemental information to the Consolidated Statement of Cash Flows - Footnote (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Lessee, Lease, Description [Line Items]
Premises and equipment/operating lease obligations	$ 15	$ 1,281
ASU 2016-02
Lessee, Lease, Description [Line Items]
Premises and equipment/operating lease obligations	1,244
New or Modified Leases
Lessee, Lease, Description [Line Items]
Premises and equipment/operating lease obligations	$ 37

Uncategorized Items - form10-q1

Label	Element	Value
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	$ 41,625,000,000	[1]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	40,739,000,000	[1]
Geographic Distribution, Foreign [Member]
Financing Receivable, Allowance for Credit Loss	us-gaap_FinancingReceivableAllowanceForCreditLosses	0
Wealth Management Loans And Mortgages [Member] | Geographic Distribution, Domestic [Member]
Financing Receivable, Allowance for Credit Loss	us-gaap_FinancingReceivableAllowanceForCreditLosses	8,000,000
Commercial Real Estate Loans [Member] | Geographic Distribution, Domestic [Member]
Financing Receivable, Allowance for Credit Loss	us-gaap_FinancingReceivableAllowanceForCreditLosses	90,000,000
Commercial Loans [Member] | Geographic Distribution, Domestic [Member]
Financing Receivable, Allowance for Credit Loss	us-gaap_FinancingReceivableAllowanceForCreditLosses	17,000,000
Lease Financings [Member] | Geographic Distribution, Domestic [Member]
Financing Receivable, Allowance for Credit Loss	us-gaap_FinancingReceivableAllowanceForCreditLosses	3,000,000
Other Residential Mortgages [Member] | Geographic Distribution, Domestic [Member]
Financing Receivable, Allowance for Credit Loss	us-gaap_FinancingReceivableAllowanceForCreditLosses	15,000,000
Financial Institutions [Member] | Geographic Distribution, Domestic [Member]
Financing Receivable, Allowance for Credit Loss	us-gaap_FinancingReceivableAllowanceForCreditLosses	14,000,000
AOCI Attributable to Parent [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	(3,261,000,000)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	(2,643,000,000)
Common Stock [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	14,000,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	14,000,000
Treasury Stock [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	(18,844,000,000)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	(15,517,000,000)
Retained Earnings [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	28,742,000,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	31,939,000,000
Additional Paid-in Capital [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	27,118,000,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	27,515,000,000
Preferred Stock [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	3,542,000,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	3,542,000,000
Noncontrolling Interest In Consolidated Entity [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	101,000,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	102,000,000
Temporary Equity Redeemable Noncontrolling Interests [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	129,000,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	143,000,000
Accounting Standards Update 2018-02 [Member] | AOCI Attributable to Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(90,000,000)
Accounting Standards Update 2018-02 [Member] | Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	90,000,000
Accounting Standards Update 2016-13 [Member] | Geographic Distribution, Foreign [Member]
Financing Receivable, Allowance for Credit Loss	us-gaap_FinancingReceivableAllowanceForCreditLosses	(24,000,000)
Accounting Standards Update 2016-13 [Member] | Wealth Management Loans And Mortgages [Member] | Geographic Distribution, Domestic [Member]
Financing Receivable, Allowance for Credit Loss	us-gaap_FinancingReceivableAllowanceForCreditLosses	(12,000,000)
Accounting Standards Update 2016-13 [Member] | Commercial Real Estate Loans [Member] | Geographic Distribution, Domestic [Member]
Financing Receivable, Allowance for Credit Loss	us-gaap_FinancingReceivableAllowanceForCreditLosses	14,000,000
Accounting Standards Update 2016-13 [Member] | Commercial Loans [Member] | Geographic Distribution, Domestic [Member]
Financing Receivable, Allowance for Credit Loss	us-gaap_FinancingReceivableAllowanceForCreditLosses	(43,000,000)
Accounting Standards Update 2016-13 [Member] | Lease Financings [Member] | Geographic Distribution, Domestic [Member]
Financing Receivable, Allowance for Credit Loss	us-gaap_FinancingReceivableAllowanceForCreditLosses	0
Accounting Standards Update 2016-13 [Member] | Other Residential Mortgages [Member] | Geographic Distribution, Domestic [Member]
Financing Receivable, Allowance for Credit Loss	us-gaap_FinancingReceivableAllowanceForCreditLosses	2,000,000
Accounting Standards Update 2016-13 [Member] | Financial Institutions [Member] | Geographic Distribution, Domestic [Member]
Financing Receivable, Allowance for Credit Loss	us-gaap_FinancingReceivableAllowanceForCreditLosses	(6,000,000)
Accounting Standards Update 2016-13 [Member] | AOCI Attributable to Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (5,000,000)
[1]	Includes total The Bank of New York Mellon Corporation common shareholders’ equity of $37,096 million at Dec. 31, 2018 and $37,683 million at March 31, 2019 .