Consolidated Statement of Cash Flows - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Operating Activities
Net income		$ 1,429	$ 1,826
Adjustments to reconcile net income to net cash provided (used) by operating activities
Provision for (recapture of) credit losses		(208)	(551)
Depreciation and amortization		385	375
Deferred income taxes (benefit)		61	(138)
Changes in fair value of mortgage servicing rights		(264)	(323)
Net change in
Trading securities and other short-term investments		(1,024)	564
Loans held for sale and related securitization activity		642	(342)
Other assets		(3,024)	(822)
Accrued expenses and other liabilities		969	245
Other		45	(54)
Net cash provided (used) by operating activities		(989)	780
Sales
Securities available for sale		2,561	5,558
Loans		268	406
Repayments/maturities
Securities available for sale		6,639	7,263
Securities held to maturity		57	14
Purchases
Securities available for sale		(15,599)	(22,094)
Securities held to maturity		(1)	(21)
Loans		(807)	(778)
Net change in
Federal funds sold and resale agreements		(478)	(136)
Interest-earning deposits with banks		25,474	(988)
Loans		(5,631)	5,043
Other		224	(339)
Net cash provided (used) by investing activities		12,707	(6,072)
Net change in
Noninterest-bearing deposits		(4,350)	8,096
Interest-bearing deposits		(2,704)	1,718
Federal funds purchased and repurchase agreements		16	(3)
Other borrowed funds		471	168
Sales/issuances
Other borrowed funds		289	188
Common and treasury stock		22	27
Repayments/maturities
Federal Home Loan Bank borrowings			(2,000)
Bank notes and senior debt		(3,750)	(1,650)
Other borrowed funds		(289)	(198)
Acquisition of treasury stock		(1,279)	(66)
Preferred stock cash dividends paid		(45)	(57)
Common stock cash dividends paid		(531)	(493)
Net cash provided (used) by financing activities		(12,150)	5,730
Net Increase (Decrease) In Cash And Due From Banks And Restricted Cash		(432)	438
Cash and due from banks and restricted cash at beginning of period		8,004	7,017
Cash and due from banks and restricted cash at end of period		7,572	7,455
Cash and due from banks and restricted cash
Cash and due from banks at end of period (unrestricted cash)		6,971	6,698
Restricted cash		601	757
Cash and due from banks and restricted cash at end of period		7,572	7,455
Supplemental Disclosures
Interest paid		85	188
Income taxes paid		16	15
Income taxes refunded		3	4
Leased assets obtained in exchange for new operating lease liabilities		43	12
Non-cash Investing and Financing Items
Transfer from securities available for sale to securities held to maturity	[1]	20,041
Transfer from loans to loans held for sale, net		137	344
Transfer from loans to foreclosed assets		$ 8	$ 7

[1] During the first quarter of 2022, we transferred securities from available for sale to held to maturity in a non-cash transaction. The amount of $20.0 billion includes the fair value of the securities of $18.7 billion and net pretax unrealized losses of $1.3 billion included in AOCI. See Note 3 Investment Securities for more detailed information on the transfer.