Consolidated Statement of Cash Flows (unaudited) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019
Operating activities
Net income		$ 2,871	$ 3,018
Net (income) attributable to noncontrolling interests		(4)	(17)
Net income applicable to shareholders of The Bank of New York Mellon Corporation		2,867	3,001
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Provision for credit losses	[1]	321	(17)
Pension plan contributions		(18)	(30)
Depreciation and amortization		1,175	971
Deferred tax (benefit)		(351)	(185)
Net securities (gains)		(27)	(7)
Change in trading assets and liabilities		1,736	(1,880)
Change in accruals and other, net		200	714
Net cash provided by operating activities		5,903	2,567
Investing activities
Change in interest-bearing deposits with banks		(3,808)	(1,503)
Change in interest-bearing deposits with the Federal Reserve and other central banks		(9,775)	(7,171)
Purchases of securities held-to-maturity		(23,507)	(5,390)
Paydowns of securities held-to-maturity		6,291	3,501
Maturities of securities held-to-maturity		5,477	2,274
Purchases of securities available-for-sale		(56,860)	(33,929)
Sales of securities available-for-sale		10,824	7,482
Paydowns of securities available-for-sale		7,300	5,260
Maturities of securities available-for-sale		21,113	20,006
Net change in loans		(537)	1,478
Sales of loans and other real estate		10	147
Change in federal funds sold and securities purchased under resale agreements		525	3,071
Net change in seed capital investments		20	68
Purchases of premises and equipment/capitalized software		(956)	(1,112)
Other, net		(417)	588
Net cash (used for) investing activities		(44,300)	(5,230)
Financing activities
Change in deposits		35,736	13,207
Change in federal funds purchased and securities sold under repurchase agreements		4,299	(2,447)
Change in payables to customers and broker-dealers		4,627	(1,332)
Change in other borrowed funds		(183)	(2,422)
Change in commercial paper		(3,288)	1,599
Net proceeds from the issuance of long-term debt		2,245	2,246
Repayments of long-term debt		(4,400)	(4,250)
Proceeds from the exercise of stock options		36	51
Issuance of common stock		9	19
Issuance of preferred stock		990	0
Treasury stock acquired		(988)	(2,286)
Common cash dividends paid		(838)	(834)
Preferred cash dividends paid		(146)	(120)
Other, net		36	23
Net cash provided by financing activities		38,135	3,454
Effect of exchange rate changes on cash		(10)	(57)
Change in cash and due from banks and restricted cash
Change in cash and due from banks and restricted cash		(272)	734
Cash and due from banks and restricted cash at beginning of period		7,267	8,258
Cash and due from banks and restricted cash at end of period		6,995	8,992
Cash and due from banks and restricted cash at end of period		6,995	8,992
Supplemental disclosures
Interest paid		1,166	3,528
Income taxes paid		1,112	697
Income taxes refunded		$ 23	$ 445

[1] In the first quarter of 2020, we adopted new accounting guidance included in ASU 2016-13, Financial Instruments – Credit Losses: Measurement of Credit Losses on Financial Instruments, on a prospective basis. See Note 2 of the Notes to Consolidated Financial Statements for additional information.