Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Operating activities
Net income	$ 12,204	$ 11,249
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	1,894	1,542
Depreciation and amortization	2,419	2,426
Deferred tax expense	90	2,540
Investment securities gains	(96)	(42)
Stock-based compensation	1,075	1,142
Originations and purchases of loans held-for-sale	(30,665)	(34,940)
Proceeds from sales, securitizations and paydowns of loans held-for-sale	27,797	38,853
Net change in:
Trading assets	34,114	(14,764)
Securities borrowed	11,903	(2,507)
Accrued interest and accounts receivable	154	(12,801)
Other assets	718	18,795
Trading liabilities	(16,660)	(7,140)
Accounts payable and other liabilities	(9,432)	1,733
Other operating adjustments	(3,340)	4,210
Net cash provided by operating activities	32,175	10,296
Investing activities
Net change in deposits with banks	85,670	(77,858)
Net change in federal funds sold and securities purchased under resale agreements	2,927	(1,427)
Held-to-maturity securities:
Proceeds from paydowns and maturities	3,185	1,667
Purchases	(5,678)	(6,312)
Available-for-sale securities:
Proceeds from paydowns and maturities	43,454	41,248
Proceeds from sales	22,569	14,976
Purchases	(41,391)	(54,227)
Proceeds from sales and securitizations of loans held-for-investment	10,217	9,170
Other changes in loans, net	(45,505)	(24,730)
Net cash provided by/(used in) business acquisitions or dispositions	1,263	(19)
All other investing activities, net	760	(426)
Net cash provided by/(used in) investing activities	77,471	(97,938)
Financing activities
Net change in deposits	(88,838)	33,419
Net change in federal funds purchased and securities loaned or sold under repurchase agreements	(11,195)	35,364
Net change in commercial paper and other borrowed funds	(24,161)	11,119
Net change in beneficial interests issued by consolidated variable interest entities	(1,454)	(5,665)
Proceeds from long-term borrowings	54,585	36,469
Payments of long-term borrowings	(40,190)	(36,628)
Excess tax benefits related to stock-based compensation	287	357
Proceeds from issuance of preferred stock	4,774	7,249
Treasury stock purchased	(3,149)	(1,761)
Dividends paid	(3,734)	(3,360)
All other financing activities, net	(354)	(1,127)
Net cash (used in)/provided by financing activities	(113,429)	75,436
Effect of exchange rate changes on cash and due from banks	47	(42)
Net decrease in cash and due from banks	(3,736)	(12,248)
Cash and due from banks at the beginning of the period	27,831	39,771
Cash and due from banks at the end of the period	24,095	27,523
Cash interest paid	3,302	4,007
Cash income taxes paid/(refunded), net	$ 5,833	$ (739)