Consolidated Statements of Income (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenue
Investment banking fees	$ 1,507	$ 1,443	$ 4,669	$ 4,081
Principal transactions	2,662	2,047	10,183	4,342
Lending-and deposit-related fees	1,519	1,562	4,476	4,625
Asset management, administration and commissions	3,667	3,336	11,131	10,189
Securities gains	26	458	659	2,008
Mortgage fees and related income	841	2,377	4,116	6,652
Credit card income	1,518	1,428	4,440	4,156
Other income	602	1,519	1,364	3,537
Noninterest revenue	12,342	14,170	41,038	39,590
Interest income	13,162	13,629	39,734	42,429
Interest expense	2,387	2,653	7,322	8,641
Net interest income	10,775	10,976	32,412	33,788
Total net revenue	23,117	25,146	73,450	73,378
Provision for credit losses	(543)	1,789	121	2,729
Noninterest expense
Compensation expense	7,325	7,503	23,758	23,543
Occupancy expense	947	973	2,752	3,014
Technology, communications and equipment expense	1,356	1,312	4,049	3,865
Professional and outside services	1,897	1,759	5,532	5,411
Marketing	588	607	1,755	1,929
Other expense	11,373	3,035	16,625	10,354
Amortization of intangibles	140	182	444	566
Total noninterest expense	23,626	15,371	54,915	48,682
Income before income tax expense	34	7,986	18,414	21,967
Income tax expense	414	2,278	5,769	6,375
Net income/(loss)	(380)	5,708	12,645	15,592
Net income applicable to common stockholders	(650)	5,346	11,656	14,556
Per common share data - Basic earnings per share
Basic earnings per share	$ (0.17)	$ 1.41	$ 3.08	$ 3.82
Per common share data - Diluted earnings per share
Diluted earnings per share	$ (0.17)	$ 1.40	$ 3.05	$ 3.81
Weighted-average basic shares	3,767.0	3,803.3	3,789.2	3,810.4
Weighted-average diluted shares	3,767.0	3,813.9	3,820.9	3,822.6
Cash dividends declared per common share	$ 0.38	$ 0.3	$ 1.06	$ 0.90
Other-than-temporary impairment losses included in securities gains
Total other-than-temporary impairment losses	0	0	0	(113)
Losses recorded in/(reclassified from) other comprehensive income	0	(2)	0	85
OTTI losses recognized in income	(19)	(3)	(19)	(42)
Credit related
Other-than-temporary impairment losses included in securities gains
OTTI losses recognized in income	0	(2)	0	(28)
Intent to sell [Member]
Other-than-temporary impairment losses included in securities gains
OTTI losses recognized in income	$ (19)	$ (1)	$ (19)	$ (14)

Combination of: 1) Revenue recognized in the period for (A) performance (incentive) fees based on the investment results achieved for management of certain institutional accounts and hedge funds, (B) schedule-based fees earned for management of mutual funds and closed-end funds, based either on average daily net assets or on a combination of the average daily net assets and gross income, and (C) other investment management and advisory fees. 2) Acting as an agent, a broker-dealer may buy and sell securities on behalf of its customers. In return for such services, the broker-dealer charges a commission. Each time a customer enters into a buy or sell transaction, a commission is earned by the broker-dealer for its selling and administrative efforts. For securities purchased, the commission is recorded as a receivable from customers; for securities sold, it is recorded as reductions in the payable to customers. Commissions earned are usually related to the broker-dealer's customers' trading volume and the dollar amounts of the trades. In general, commissions are for smaller trades of exchange-listed stocks and bonds made by retail customers. 3)Income from services rendered by trust departments or by any consolidated subsidiaries acting in a fiduciary capacity, including fees earned for (A) acting as an agent for fiduciary placement and loans and (B) custody or investment advisory services when such fees are not separately billed to the customer. This item excludes commissions and fees received for the accumulation or disbursement of funds deposited to Individual Retirement or Keogh plan accounts when such are not handled by the reporting entity's trust department. 4) Income from agency and brokerage operations (includes sales of annuities and supplemental contracts); service charges, commissions, and fees from the sale of insurance and related services; and management fees from separate accounts, deferred annuities, and universal life products. 5) Revenues from providing transfer agent services to corporations. Such services include maintaining records of investors and account balances and transactions, canceling and issuing certificates, processing investor mailings and dealing with any associated problems (i.e. lost or stolen certificates). 6) Service revenue earned by a depository institution that holds the account balances of other financial institutions and provides services thereto. Such services include check collection and item processing. 7) Fee and commission revenue earned from sources not otherwise specified in the existing taxonomy, such as ADR fees, fund accounting fees, etc.

No definition available.