Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Operating activities
Net income	$ 5,520	$ 5,914
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	1,824	959
Depreciation and amortization	1,289	1,181
Deferred tax expense/(benefit)	906	33
Other	468	513
Originations and purchases of loans held-for-sale	(7,457)	(8,856)
Proceeds from sales, securitizations and paydowns of loans held-for-sale	7,818	10,646
Net change in:
Trading assets	(32,979)	5,450
Securities borrowed	(4,826)	2,057
Accrued interest and accounts receivable	(11,115)	(27)
Other assets	(7,464)	(10,199)
Trading liabilities	24,919	17,349
Accounts payable and other liabilities	124	(6,482)
Other operating adjustments	(410)	(3,659)
Net cash provided by/(used in) operating activities	(21,383)	14,879
Investing activities
Net change in deposits with banks	(20,181)	(21,906)
Net change in federal funds sold and securities purchased under resale agreements	(10,577)	(3,468)
Held-to-maturity securities:
Proceeds from paydowns and maturities	1,218	1,379
Purchases	(134)	(1,459)
Available-for-sale securities:
Proceeds from paydowns and maturities	15,845	25,221
Proceeds from sales	11,676	6,909
Purchases	(19,525)	(21,663)
Proceeds from sales and securitizations of loans held-for-investment	2,860	4,661
Other changes in loans, net	(15,925)	(15,768)
All other investing activities, net	162	1,944
Net cash used in investing activities	(34,581)	(24,150)
Financing activities
Net change in deposits	51,978	8,967
Net change in federal funds purchased and securities loaned or sold under repurchase agreements	8,304	4,468
Net change in commercial paper and other borrowed funds	807	(11,885)
Net change in beneficial interests issued by consolidated variable interest entities	(2,744)	(510)
Proceeds from long-term borrowings	15,718	28,395
Payments of long-term borrowings	(16,560)	(22,183)
Proceeds from issuance of preferred stock	0	1,392
Treasury stock purchased	(1,696)	(1,900)
Dividends paid	(1,946)	(1,770)
All other financing activities, net	(277)	(637)
Net cash provided by financing activities	53,584	4,337
Effect of exchange rate changes on cash and due from banks	102	(76)
Net decrease in cash and due from banks	(2,278)	(5,010)
Cash and due from banks at the beginning of the period	20,490	27,831
Cash and due from banks at the end of the period	18,212	22,821
Cash interest paid	2,129	1,601
Cash income taxes paid, net	$ 447	$ 608