Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating activities
Net income	$ 17,923	$ 21,284	$ 18,976
Adjustments to reconcile net income to net cash provided by/(used in) operating activities:
Provision for credit losses	225	3,385	7,574
Depreciation and amortization	4,669	4,190	4,257
Amortization of intangibles	637	957	848
Deferred tax expense	8,003	1,130	1,693
Investment securities gains	(667)	(2,110)	(1,593)
Stock-based compensation	2,219	2,545	2,675
Originations and purchases of loans held-for-sale	(75,928)	(34,026)	(52,561)
Proceeds from sales, securitizations and paydowns of loans held-for-sale	73,566	33,202	54,092
Net change in:
Trading assets	89,110	(5,379)	36,443
Securities borrowed	7,562	23,455	(18,936)
Accrued interest and accounts receivable	(2,340)	1,732	8,655
Other assets	526	(4,683)	(15,456)
Trading liabilities	(9,772)	(3,921)	7,905
Accounts payable and other liabilities	(5,743)	(13,069)	35,203
Other operating adjustments	(2,037)	(3,613)	6,157
Net cash provided by operating activities	107,953	25,079	95,932
Investing activities
Net change in deposits with banks	(194,363)	(36,595)	(63,592)
Net change in federal funds sold and securities purchased under resale agreements	47,726	(60,821)	(12,490)
Held-to-maturity securities:
Proceeds from paydowns and maturities	189	4	6
Purchases	(24,214)	0	0
Available-for-sale securities:
Proceeds from paydowns and maturities	89,631	112,633	86,850
Proceeds from sales	73,312	81,957	68,631
Purchases	(130,266)	(189,630)	(202,309)
Proceeds from sales and securitizations of loans held-for-investment	12,033	6,430	10,478
Other changes in loans, net	(23,721)	(30,491)	(58,365)
Net cash (used in)/received from business acquisitions or dispositions	(149)	88	102
All other investing activities, net	(679)	(3,400)	(63)
Net cash used in investing activities	(150,501)	(119,825)	(170,752)
Financing activities
Net change in deposits	81,476	67,250	203,420
Net change in federal funds purchased and securities loaned or sold under repurchase agreements	(58,867)	26,546	(63,116)
Net change in commercial paper and other borrowed funds	2,784	9,315	7,230
Net change in beneficial interests issued by consolidated variable interest entities	(10,433)	345	1,165
Proceeds from long-term borrowings and trust preferred securities	83,546	86,271	54,844
Payments of long-term borrowings and trust preferred securities	(60,497)	(96,473)	(82,078)
Excess tax benefits related to stock-based compensation	137	255	867
Proceeds from issuance of preferred stock	3,873	1,234	0
Redemption of preferred stock	(1,800)	0	0
Treasury stock and warrants repurchased	(4,789)	(1,653)	(8,863)
Dividends paid	(6,056)	(5,194)	(3,895)
All other financing activities, net	(1,050)	(189)	(1,868)
Net cash provided by financing activities	28,324	87,707	107,706
Effect of exchange rate changes on cash and due from banks	272	1,160	(851)
Net (decrease)/increase in cash and due from banks	(13,952)	(5,879)	32,035
Cash and due from banks at the beginning of the period	53,723	59,602	27,567
Cash and due from banks at the end of the period	39,771	53,723	59,602
Cash interest paid	9,573	11,161	13,725
Cash income taxes paid, net	$ 3,502	$ 2,050	$ 8,153