Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Operating activities
Net income/(loss)	$ 16,831	$ 12,645
Adjustments to reconcile net income to net cash provided by/(used in) operating activities:
Provision for credit losses	2,299	121
Depreciation and amortization	3,259	3,616
Amortization of intangibles	314	444
Deferred tax expense	1,784	2,640
Investment securities gains	(48)	(659)
Stock-based compensation	1,681	1,734
Originations and purchases of loans held-for-sale	(48,334)	(60,073)
Proceeds from sales, securitizations and paydowns of loans held-for-sale	53,250	61,058
Net change in:
Trading assets	(30,542)	84,075
Securities borrowed	(7,416)	(3,410)
Accrued interest and accounts receivable	(7,793)	(3,487)
Other assets	9,842	(6,062)
Trading liabilities	2,624	6,867
Accounts payable and other liabilities	9,346	17,526
Other operating adjustments	750	(2,168)
Net cash provided by operating activities	7,847	114,867
Investing activities
Net change in deposits with banks	(98,261)	(249,755)
Net change in federal funds sold and securities purchased under resale agreements	32,272	60,033
Held-to-maturity securities:
Proceeds from paydowns and maturities	2,947	21
Purchases	(8,634)	(4,531)
Available-for-sale securities:
Proceeds from paydowns and maturities	67,261	69,892
Proceeds from sales	21,054	51,074
Purchases	(96,776)	(110,749)
Proceeds from sales and securitizations of loans held-for-investment	14,592	9,278
Other changes in loans, net	(30,070)	(11,899)
Net cash provided by/(used in) business acquisitions or dispositions	24	(62)
All other investing activities, net	(39)	(2,403)
Net cash used in investing activities	(95,630)	(189,101)
Financing activities
Net change in deposits	52,046	72,977
Net change in federal funds purchased and securities loaned or sold under repurchase agreements	17,564	(21,322)
Net change in commercial paper and other borrowed funds	4,367	1,826
Net change in beneficial interests issued by consolidated variable interest entities	(4,515)	(10,956)
Proceeds from long-term borrowings and trust preferred securities	54,263	70,305
Payments of long-term borrowings and trust preferred securities	(49,493)	(53,532)
Excess tax benefits related to stock-based compensation	387	122
Proceeds from issuance of preferred stock	8,848	3,873
Redemption of preferred stock	0	(1,800)
Treasury stock purchased	(3,250)	(4,490)
Dividends paid	(5,078)	(4,274)
All other financing activities, net	(1,078)	(1,486)
Net cash provided by financing activities	74,061	51,243
Effect of exchange rate changes on cash and due from banks	(677)	(68)
Net decrease in cash and due from banks	(14,399)	(23,059)
Cash and due from banks at the beginning of the period	39,771	53,723
Cash and due from banks at the end of the period	25,372	30,664
Cash interest paid	6,008	7,275
Cash income taxes paid, net	$ 453	$ 3,018