Consolidated Statement of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Operating Activities
Net income	$ 4,570	$ 2,645
Adjustments to reconcile net income to net cash provided (used) by operating activities
Provision for credit losses	3,377	369
Depreciation and amortization	712	579
Deferred income taxes	(2,501)	106
Net gains on sales of securities	(222)	(32)
Changes in fair value of mortgage servicing rights	728	502
Gain on sale of BlackRock	(5,740)
Undistributed earnings of BlackRock	(174)	(220)
Net change in
Trading securities and other short-term investments	(266)	1,465
Loans held for sale	(170)	(116)
Other assets	(1,675)	(2,286)
Accrued expenses and other liabilities	3,161	812
Other	531	(180)
Net cash provided (used) by operating activities	2,331	3,644
Sales
Securities available for sale	12,055	2,817
Net proceeds from sale of BlackRock	14,225
Loans	597	520
Repayments/maturities
Securities available for sale	10,110	4,795
Securities held to maturity	38	1,155
Purchases
Securities available for sale	(31,593)	(11,141)
Securities held to maturity	(44)	(292)
Loans	(173)	(735)
Net change in
Federal funds sold and resale agreements	460	4,538
Interest-earning deposits with banks	(26,820)	(7,469)
Loans	(19,886)	(11,169)
Other	(206)	(502)
Net cash provided (used) by investing activities	(41,237)	(17,483)
Net change in
Noninterest-bearing deposits	26,673	(3,992)
Interest-bearing deposits	30,778	9,514
Federal funds purchased and repurchase agreements	(5,888)	1,546
Federal Home Loan Bank borrowings	(6,300)
Federal Home Loan Bank borrowings		6,875
Non-cash Investing and Financing Items
Transfer from loans to loans held for sale, net	542	256
Transfer from trading securities to investment securities	289
Transfer from loans to foreclosed assets	43	90
Other borrowed funds	1,486	(119)
Sales/issuances
Federal Home Loan Bank borrowings	9,060	12,000
Bank notes and senior debt	3,487	4,438
Other borrowed funds	304	771
Common and treasury stock	34	40
Repayments/maturities
Federal Home Loan Bank borrowings	(10,601)	(11,000)
Bank notes and senior debt	(5,897)	(2,350)
Subordinated debt		(700)
Other borrowed funds	(318)	(777)
Acquisition of treasury stock	(1,523)	(1,613)
Preferred stock cash dividends paid	(118)	(118)
Common stock cash dividends paid	(994)	(868)
Net cash provided (used) by financing activities	40,183	13,647
Net Increase (Decrease) In Cash And Due From Banks And Restricted Cash	1,277	(192)
Net cash provided by discontinued operations	14,299	159
Net cash provided (used) by continuing operations	(13,022)	(351)
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	6,338	5,416
Cash and due from banks at end of period (unrestricted cash)	5,977	5,416
Restricted cash	361
Supplemental Disclosures
Interest paid	913	1,905
Income taxes paid	528	217
Income taxes refunded	9	7
Leased assets obtained in exchange for new operating lease liabilities	$ 59	236
Right-of-use assets recognized at adoption of ASU 2016-02		$ 2,004