Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020
Operating activities
Net income		$ 37,935	$ 16,995
Adjustments to reconcile net income to net cash used in operating activities:
Provision for credit losses		(7,968)	19,369
Depreciation and amortization		6,001	6,487
Deferred tax (benefit)/expense	[1]	(1,063)	(5,139)
Other		2,662	1,245
Originations and purchases of loans held-for-sale		(259,159)	(112,142)
Proceeds from sales, securitizations and paydowns of loans held-for-sale		244,966	120,786
Net change in:
Trading assets		2,700	(145,124)
Securities borrowed		(42,471)	(2,509)
Accrued interest and accounts receivable		(26,148)	(4,398)
Other assets	[1]	(358)	(28,732)
Trading liabilities		(10,668)	63,516
Accounts payable and other liabilities	[1]	47,547	16,495
Other operating adjustments		(987)	1,293
Net cash (used in) operating activities		(7,011)	(51,858)
Net change in:
Federal funds sold and securities purchased under resale agreements		14,089	(70,597)
Held-to-maturity securities:
Proceeds from paydowns and maturities		39,106	11,498
Purchases		(78,976)	(5,528)
Available-for-sale securities:
Proceeds from paydowns and maturities		39,346	43,709
Proceeds from sales		146,858	110,354
Purchases		(163,211)	(281,147)
Proceeds from sales and securitizations of loans held-for-investment		25,981	18,509
Other changes in loans, net		(45,028)	(21,606)
All other investing activities, net		(7,351)	(3,398)
Net cash (used in) investing activities		(29,186)	(198,206)
Net change in:
Deposits		234,716	452,454
Federal funds purchased and securities loaned or sold under repurchase agreements		39,753	52,745
Short-term borrowings		4,710	1,945
Beneficial interests issued by consolidated VIEs		(1,839)	2,838
Proceeds from long-term borrowings		69,272	64,243
Payments of long-term borrowings		(46,041)	(90,481)
Proceeds from issuance of preferred stock		7,350	4,500
Redemption of preferred stock		(2,575)	(1,430)
Treasury stock repurchased		(16,286)	(6,517)
Dividends paid		(9,472)	(9,551)
All other financing activities, net		(1,573)	(59)
Net cash provided by financing activities		278,015	470,687
Effect of exchange rate changes on cash and due from banks and deposits with banks		(9,558)	3,268
Net increase in cash and due from banks and deposits with banks		232,260	223,891
Cash and due from banks and deposits with banks at the beginning of the period		527,609	263,631
Cash and due from banks and deposits with banks at the end of the period		759,869	487,522
Cash interest paid		3,882	11,576
Cash income taxes paid, net	[1]	$ 17,617	$ 6,523

[1] Prior-period amounts have been revised to conform with the current presentation. Refer to Note 1 for further information on the revisions to the operating activities.