Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash Flows From Operating Activities:
Net income	$ 3,162	$ 2,511
Adjustments to reconcile net income to net cash from operating activities:
Provision for credit losses	2,158	444
Depreciation	694	324
Amortization of intangibles	513	93
Equity-based compensation expense	280	119
Securities gains (losses)	(402)	0
Net change in operating assets and liabilities:
LHFS	1,144	(531)
MSRs	639	193
Pension asset	(417)	(838)
Increase (Decrease) in Derivative Assets	(3,064)	(559)
Trading assets	1,063	(9)
Other assets and other liabilities	(299)	(61)
Other, net	(442)	278
Net cash from operating activities	5,029	1,964
Cash Flows From Investing Activities:
Proceeds from sales of AFS securities	5,219	4,255
Proceeds from maturities, calls and paydowns of AFS securities	14,917	3,051
Purchases of AFS securities	(28,242)	(17,220)
Proceeds from maturities, calls and paydowns of HTM securities	0	1,762
Originations and purchases of loans and leases, net of sales and principal collected	(4,328)	(1,060)
Net cash received (paid) for FHLB stock	599	(116)
Net cash received (paid) for securities borrowed or purchased under resale agreements	117	29
Net cash paid for premises and equipment	(716)	(116)
Net cash received (paid) for mergers, acquisitions and divestitures	(1,811)	(33)
Other, net	158	77
Net cash from investing activities	(14,087)	(9,371)
Cash Flows From Financing Activities:
Net change in deposits	38,263	1,096
Net change in short-term borrowings	(11,972)	5,317
Proceeds from issuance of long-term debt	26,570	5,653
Repayment of long-term debt	(27,667)	(4,259)
Net proceeds from preferred stock issued	3,449	1,683
Redemption of preferred stock	(500)	(1,725)
Cash dividends paid on common stock	(1,817)	(964)
Cash dividends paid on preferred stock	(200)	(131)
Net cash received (paid) for hedge unwinds	1,111	(156)
Other, net	(136)	(47)
Net cash from financing activities	27,101	6,467
Net Change in Cash and Cash Equivalents	18,043	(940)
Cash and Cash Equivalents, January 1	19,065	3,844
Cash and Cash Equivalents, September 30	37,108	2,904
Supplemental Disclosure of Cash Flow Information:
Net cash paid (received) during the period for interest expense	1,555	1,486
Net cash paid (received) during the period for income taxes	$ 94	$ 409