Consolidated Statement of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Operating Activities
Net income	$ 6,102	$ 4,037
Adjustments to reconcile net income to net cash provided (used) by operating activities
Provision for credit losses	3,429	552
Depreciation and amortization	944	904
Deferred income taxes	(2,505)	83
Net gains on sales of securities	(254)
Changes in fair value of mortgage servicing rights	774	715
Gain on sale of BlackRock	(5,740)
Undistributed earnings of BlackRock	(174)	(356)
Net change in
Trading securities and other short-term investments	1,132	741
Loans held for sale	(533)	(882)
Other assets	(2,112)	(2,086)
Accrued expenses and other liabilities	1,044	831
Other	617	(291)
Net cash provided (used) by operating activities	2,724	4,248
Sales
Securities available for sale	12,512	5,201
Net proceeds from sale of BlackRock	14,225
Loans	1,365	1,237
Repayments/maturities
Securities available for sale	19,850	7,962
Securities held to maturity	52	2,193
Purchases
Securities available for sale	(34,242)	(17,179)
Securities held to maturity	(49)	(1,739)
Loans	(1,600)	(898)
Net change in
Federal funds sold and resale agreements	1,693	3,192
Interest-earning deposits with banks	(47,546)	(8,143)
Loans	(10,323)	(11,978)
Other	(316)	(573)
Net cash provided (used) by investing activities	(44,379)	(20,725)
Net change in
Noninterest-bearing deposits	34,479	180
Interest-bearing deposits	32,037	17,627
Federal funds purchased and repurchase agreements	(5,870)	1,934
Short-term Federal Home Loan Bank borrowings	(6,300)
Short-term Federal Home Loan Bank borrowings		1,400
Other borrowed funds	298	(77)
Sales/issuances
Federal Home Loan Bank borrowings	9,060	12,000
Bank notes and senior debt	3,487	6,930
Other borrowed funds	458	929
Common and treasury stock	54	73
Repayments/maturities
Federal Home Loan Bank borrowings	(13,601)	(13,000)
Bank notes and senior debt	(6,647)	(5,600)
Subordinated debt		(700)
Other borrowed funds	(479)	(963)
Preferred stock redemption	(480)
Acquisition of treasury stock	(1,604)	(2,626)
Preferred stock cash dividends paid	(181)	(181)
Common stock cash dividends paid	(1,488)	(1,386)
Net cash provided (used) by financing activities	43,223	16,540
Net Increase (Decrease) In Cash And Due From Banks And Restricted Cash	1,568	63
Net cash provided by discontinued operations	12,244	233
Net cash provided (used) by continuing operations	(10,676)	(170)
Cash and due from banks and restricted cash at beginning of period	5,061	5,608
Cash and due from banks and restricted cash at end of period	6,629	5,671
Cash and due from banks at end of period (unrestricted cash)	6,297	5,671
Restricted cash	332
Supplemental Disclosures
Interest paid	1,071	2,915
Income taxes paid	2,762	321
Income taxes refunded	9	7
Leased assets obtained in exchange for new operating lease liabilities	71	238
Right-of-use assets recognized at adoption of ASU 2016-02		2,004
Non-cash Investing and Financing Items
Transfer from loans to loans held for sale, net	1,026	771
Transfer from trading securities to investment securities	289	228
Transfer from loans to foreclosed assets	$ 57	$ 131