Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Operating activities
Net income	$ 27,911	$ 25,408
Adjustments to reconcile net income to net cash used in operating activities:
Provision for credit losses	4,158	3,323
Depreciation and amortization	6,229	5,716
Deferred tax (benefit)/expense	(440)	(323)
Other	1,645	2,179
Originations and purchases of loans held-for-sale	(53,934)	(68,235)
Proceeds from sales, securitizations and paydowns of loans held-for-sale	60,510	68,214
Net change in:
Trading assets	(96,125)	(44,427)
Securities borrowed	(26,162)	(17,344)
Accrued interest and accounts receivable	(16,089)	(11,335)
Other assets	(21,181)	2,909
Trading liabilities	12,774	21,580
Accounts payable and other liabilities	19,661	26,677
Other operating adjustments	4,004	(577)
Net cash provided by/(used in) operating activities	(77,039)	13,765
Net change in:
Federal funds sold and securities purchased under resale agreements	64,207	(19,259)
Held-to-maturity securities:
Proceeds from paydowns and maturities	2,239	2,268
Purchases	(11,682)	(8,613)
Available-for-sale securities:
Proceeds from paydowns and maturities	41,378	29,618
Proceeds from sales	43,460	34,322
Purchases	(200,262)	(46,530)
Proceeds from sales and securitizations of loans held-for-investment	52,739	20,154
Other changes in loans, net	(25,977)	(49,755)
All other investing activities, net	(4,283)	(1,987)
Net cash (used in) investing activities	(38,181)	(39,782)
Net change in:
Deposits	77,147	15,274
Federal funds purchased and securities loaned or sold under repurchase agreements	65,428	22,719
Short-term borrowings	(20,577)
Short-term borrowings		12,974
Beneficial interests issued by consolidated VIEs	5,017	975
Proceeds from long-term borrowings	45,155	54,842
Payments of long-term borrowings	(51,936)	(69,636)
Proceeds from issuance of preferred stock	4,100	1,655
Redemption of preferred stock	(1,805)	0
Treasury stock repurchased	(17,250)	(14,055)
Dividends paid	(9,056)	(6,989)
All other financing activities, net	(217)	(1,440)
Net cash provided by financing activities	96,006	16,319
Effect of exchange rate changes on cash and due from banks and deposits with banks	(2,982)	(2,509)
Net decrease in cash and due from banks and deposits with banks	(22,196)	(12,207)
Cash and due from banks and deposits with banks at the beginning of the period	278,793	431,304
Cash and due from banks and deposits with banks at the end of the period	256,597	419,097
Cash interest paid	20,790	15,144
Cash income taxes paid, net	$ 3,478	$ 2,197