Consolidated Statements of Income (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenue
Investment banking fees	$ 1,717	$ 1,257	$ 3,162	$ 2,638
Principal transactions	3,760	(427)	7,521	2,295
Lending-and deposit-related fees	1,489	1,546	2,957	3,063
Asset management, administration and commissions	3,865	3,461	7,464	6,853
Securities gains	124	1,014	633	1,550
Mortgage fees and related income	1,823	2,265	3,275	4,275
Credit card income	1,503	1,412	2,922	2,728
Other income	226	506	762	2,018
Noninterest revenue	14,507	11,034	28,696	25,420
Interest income	13,145	14,099	26,572	28,800
Interest expense	2,441	2,953	4,935	5,988
Net interest income	10,704	11,146	21,637	22,812
Total net revenue	25,211	22,180	50,333	48,232
Provision for credit losses	47	214	664	940
Noninterest expense
Compensation expense	8,019	7,427	16,433	16,040
Occupancy expense	904	1,080	1,805	2,041
Technology, communications and equipment expense	1,361	1,282	2,693	2,553
Professional and outside services	1,901	1,857	3,635	3,652
Marketing	578	642	1,167	1,322
Other expense	2,951	2,487	5,252	7,319
Amortization of intangibles	152	191	304	384
Total noninterest expense	15,866	14,966	31,289	33,311
Income before income tax expense	9,298	7,000	18,380	13,981
Income tax expense	2,802	2,040	5,355	4,097
Net income	6,496	4,960	13,025	9,884
Net income applicable to common stockholders	6,101	4,634	12,232	9,210
Per common share data - Basic earnings per share
Basic earnings per share	$ 1.61	$ 1.22	$ 3.22	$ 2.41
Per common share data - Diluted earnings per share
Diluted earnings per share	$ 1.60	$ 1.21	$ 3.19	$ 2.41
Weighted-average basic shares	3,782.4	3,808.9	3,800.3	3,813.9
Weighted-average diluted shares	3,814.3	3,820.5	3,830.6	3,827.0
Cash dividends declared per common share	$ 0.38	$ 0.30	$ 0.68	$ 0.60
Other-than-temporary impairment losses included in securities gains
Total other-than-temporary impairment losses	0	(103)	0	(113)
Losses recorded in/(reclassified from) other comprehensive income	0	84	0	87
OTTI losses recognized in income	(6)	(56)	(6)	(63)
Credit related
Other-than-temporary impairment losses included in securities gains
OTTI losses recognized in income	0	(19)	0	(26)
Intent to sell [Member]
Other-than-temporary impairment losses included in securities gains
OTTI losses recognized in income	$ (6)	$ (37)	$ (6)	$ (37)

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.