Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Operating activities
Net income	$ 25,408	$ 20,209
Adjustments to reconcile net income to net cash used in operating activities:
Provision for credit losses	3,323	3,982
Depreciation and amortization	5,716	4,547
Deferred tax (benefit)/expense	(323)	(187)
Other	2,179	1,655
Originations and purchases of loans held-for-sale	(68,235)	(75,907)
Proceeds from sales, securitizations and paydowns of loans held-for-sale	68,214	75,255
Net change in:
Trading assets	(44,427)	(31,189)
Securities borrowed	(17,344)	(5,191)
Accrued interest and accounts receivable	(11,335)	(9,795)
Other assets	2,909	18,668
Trading liabilities	21,580	(23,162)
Accounts payable and other liabilities	26,677	(10,124)
Other operating adjustments	(577)	7,858
Net cash provided by/(used in) operating activities	13,765	(23,381)
Net change in:
Federal funds sold and securities purchased under resale agreements	(19,259)	44,463
Held-to-maturity securities:
Proceeds from paydowns and maturities	2,268	3,508
Purchases	(8,613)	(594)
Available-for-sale securities:
Proceeds from paydowns and maturities	29,618	43,536
Proceeds from sales	34,322	57,640
Purchases	(46,530)	(73,717)
Proceeds from sales and securitizations of loans held-for-investment	20,154	11,600
Other changes in loans, net	(49,755)	(39,385)
All other investing activities, net	(1,987)	655
Net cash provided by/(used in) investing activities	(39,782)	47,706
Net change in:
Deposits	15,274	51,352
Federal funds purchased and securities loaned or sold under repurchase agreements	22,719	3,731
Short-term borrowings	12,974	19,006
Beneficial interests issued by consolidated VIEs	975	(1,312)
Proceeds from long-term borrowings	54,842	46,311
Payments of long-term borrowings	(69,636)	(65,932)
Proceeds from issuance of preferred stock	1,655	0
Treasury stock repurchased	(14,055)	(10,602)
Dividends paid	(6,989)	(6,478)
All other financing activities, net	(1,440)	329
Net cash provided by financing activities	16,319	36,405
Effect of exchange rate changes on cash and due from banks and deposits with banks	(2,509)	7,272
Net increase/(decrease) in cash and due from banks and deposits with banks	(12,207)	68,002
Cash and due from banks and deposits with banks at the beginning of the period	431,304	391,154
Cash and due from banks and deposits with banks at the end of the period	419,097	459,156
Cash interest paid	15,144	10,294
Cash income taxes paid, net	$ 2,197	$ 3,238