Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Operating activities
Net income	$ 9,179	$ 8,712
Adjustments to reconcile net income to net cash used in operating activities:
Provision for credit losses	1,495	1,165
Depreciation and amortization	2,038	1,797
Deferred tax (benefit)/expense	233	(175)
Other	640	951
Originations and purchases of loans held-for-sale	(15,611)	(20,010)
Proceeds from sales, securitizations and paydowns of loans held-for-sale	23,528	18,300
Net change in:
Trading assets	(123,064)	(37,231)
Securities borrowed	(11,154)	(11,047)
Accrued interest and accounts receivable	869	(5,009)
Other assets	2,292	(3,929)
Trading liabilities	13,353	11,855
Accounts payable and other liabilities	10,705	(90)
Other operating adjustments	4,617	(398)
Net cash (used in) operating activities	(80,880)	(35,109)
Net change in:
Federal funds sold and securities purchased under resale agreements	22,459	(49,179)
Held-to-maturity securities:
Proceeds from paydowns and maturities	570	698
Purchases	0	(4,686)
Available-for-sale securities:
Proceeds from paydowns and maturities	7,613	10,785
Proceeds from sales	22,289	16,697
Purchases	(33,244)	(14,680)
Proceeds from sales and securitizations of loans held-for-investment	14,584	4,219
Other changes in loans, net	3,799
Other changes in loans, net		(8,226)
All other investing activities, net	(1,769)	(649)
Net cash provided by/(used in) investing activities	36,301	(45,021)
Net change in:
Deposits	26,799	49,429
Federal funds purchased and securities loaned or sold under repurchase agreements	40,352	20,185
Short-term borrowings	1,455	11,029
Beneficial interests issued by consolidated VIEs	5,671	(93)
Proceeds from long-term borrowings	15,560	19,916
Payments of long-term borrowings	(12,425)	(31,887)
Proceeds from issuance of preferred stock	1,850	0
Redemption of preferred stock	(925)	0
Treasury stock repurchased	(5,091)	(4,671)
Dividends paid	(3,033)	(2,236)
All other financing activities, net	(778)	(1,083)
Net cash provided by financing activities	69,435	60,589
Effect of exchange rate changes on cash and due from banks and deposits with banks	(1,045)	3,049
Net increase/(decrease) in cash and due from banks and deposits with banks	23,811	(16,492)
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	302,604	414,812
Cash interest paid	7,336	4,431
Cash income taxes paid, net	$ 534	$ 429