Consolidated Statement of Cash Flows (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:
Net income before noncontrolling interests	$ 17,816	$ 16,511
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	910	1,946
Changes in fair value of MSRs, MHFS and LHFS carried at fair value	884	(2,402)
Depreciation, amortization and accretion	1,933	2,508
Other net gains	(2,216)	(7,441)
Stock-based compensation	1,525	1,535
Excess tax benefits related to stock incentive compensation	(378)	(232)
Originations of MHFS	(109,288)	(274,293)
Proceeds from sales of and principal collected on mortgages originated for sale	89,626	265,249
Proceeds from sales of and principal collected on LHFS	206	373
Purchases of LHFS	(131)	(244)
Net change in:
Trading assets	12,246	39,133
Deferred income taxes	669	2,802
Accrued interest receivable	(548)	(215)
Accrued interest payable	238	10
Other assets	(7,182)	(2,962)
Other accrued expenses and liabilities	8,354	940
Net cash provided by operating activities	14,664	43,218
Cash flows from investing activities:
Net change in federal funds sold, securities purchased under resale agreements and other short term investments	(45,281)	(46,419)
Available-for-sale securities:
Sales proceeds	2,575	2,591
Prepayments and maturities	28,509	40,476
Purchases	(24,539)	(78,368)
Held-to-maturity securities:
Paydowns and maturities	4,251	0
Purchases	(33,049)	0
Nonmarketable equity investments:
Sales proceeds	2,291	1,846
Purchases	(2,408)	(2,552)
Loans:
Loans originated by banking subsidiaries, net of principal collected	(42,805)	(27,957)
Proceeds from sales (including participations) of loans originated for investment	13,926	5,894
Purchases (including participations) of loans	(3,998)	(10,022)
Principal collected on nonbank entities' loans	9,577	16,202
Loans originated by nonbank entities	(9,489)	(13,949)
Net cash paid for acquisitions	(174)	0
Proceeds from sales of foreclosed assets and short sales	5,995	8,163
Net cash from purchases and sales of MSRs	(119)	471
Other, net	(537)	869
Net cash used by investing activities	(95,275)	(102,755)
Cash flows from financing activities:
Net change in deposits	51,448	39,036
Net change in short-term borrowings	7,542	(3,335)
Long-term debt:
Proceeds from issuance	38,362	44,483
Repayment	(9,872)	(18,727)
Preferred stock:
Proceeds from issuance	2,775	2,317
Cash dividends paid	(928)	(813)
Common stock:
Proceeds from issuance	1,376	1,935
Repurchased	(6,469)	(3,978)
Cash dividends paid	(5,134)	(4,409)
Excess tax benefits related to stock incentive compensation	378	232
Net change in noncontrolling interests	(846)	(207)
Other, net	92	71
Net cash provided by financing activities	78,724	56,605
Net change in cash and due from banks	(1,887)	(2,932)
Cash and due from banks at beginning of period	19,919	21,860
Cash and due from banks at end of period	18,032	18,928
Supplemental cash flow disclosures:
Cash paid for interest	2,784	3,246
Cash paid for income taxes	$ 6,254	$ 5,543