Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash Flows From Operating Activities:
Net income	$ 1,515	$ 1,416
Adjustments to reconcile net income to net cash from operating activities:
Provision for credit losses	502	(95)
Depreciation	180	195
Amortization of intangibles	136	137
Securities (gains) losses	0	69
Net change in operating assets and liabilities:
LHFS	(846)	180
Loan servicing rights	27	(380)
Pension asset	(1,346)	(410)
Derivative assets and liabilities	(12)	986
Trading assets	304	(1,497)
Other assets and other liabilities	(490)	(558)
Other, net	148	(231)
Net cash from operating activities	118	(188)
Cash Flows From Investing Activities:
Proceeds from sales of AFS securities	4	3,127
Proceeds from maturities, calls and paydowns of AFS securities	1,279	5,259
Purchases of AFS securities	(140)	(7,219)
Proceeds from maturities, calls and paydowns of HTM securities	858	857
Purchases of HTM securities	0	(3,020)
Originations and purchases of loans and leases, net of sales and principal collected	(1,835)	(134)
Net cash received (paid) for FHLB stock	(1,147)	(1)
Net cash received (paid) for securities borrowed or purchased under agreements to resell	(456)	1,706
Net cash received (paid) for asset acquisitions, business combinations, and divestitures	0	(488)
Other, net	(613)	(121)
Net cash from investing activities	(2,050)	(34)
Cash Flows From Financing Activities:
Net change in deposits	(8,498)	11,842
Net change in short-term borrowings	224	(145)
Proceeds from issuance of long-term debt	35,029	66
Repayment of long-term debt	(8,444)	(1,699)
Cash dividends paid on common stock	(691)	(637)
Cash dividends paid on preferred stock	(103)	(88)
Net cash received (paid) for hedge unwinds	(378)	(198)
Other, net	(32)	(92)
Net cash from financing activities	17,107	9,049
Net Change in Cash and Cash Equivalents	15,175	8,827
Cash and Cash Equivalents, January 1	21,421	20,295
Cash and Cash Equivalents, March 31	36,596	29,122
Supplemental Disclosure of Cash Flow Information:
Net cash paid (received) during the period for interest expense	1,667	156
Net cash paid (received) during the period for income taxes	23	40
Noncash investing activities:
Transfer of AFS securities to HTM	$ 0	$ 59,436