Noninterest Revenue (Details) (USD $) In Millions	3 Months Ended
Mar. 31, 2011	Mar. 31, 2010
Underwriting:
Equity	$ 379	$ 413
Debt	982	751
Total underwriting	1,361	1,164
Advisory	432	297
Total investment banking fees	1,793	1,461
Principal transactions revenue
Trading revenue	3,940	4,386
Private equity gains/(losses)	805	162
Principal transactions	4,745	4,548
Asset management:
Investment management fees	1,494	1,327
All other asset management fees	144	109
Total asset management fees	1,638	1,436
Total administration fees	551	491
Commission and other fees:
Brokerage commissions	763	703
All other commissions and fees	654	635
Total commissions and fees	1,417	1,338
Total asset management, administration and commissions	$ 3,606	$ 3,265

All other asset management fees.

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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.

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Debt underwriting revenue (the spread between the resale price received and the cost of the securities and related expenses) generated through the purchasing, distributing and reselling of new issues of securities (alternatively, could be a secondary offering of a large block of previously issued securities).

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Equity underwriting revenue (the spread between the resale price received and the cost of the securities and related expenses) generated through the purchasing, distributing and reselling of new issues of securities (alternatively, could be a secondary offering of a large block of previously issued securities).

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Fees earned for mergers, acquisitions, divestitures, restructurings, and other types of financial advisory services.

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Underwriting.

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Revenue recognized in the period for (1) performance (incentive) fees based on the investment results achieved for management of certain institutional accounts and hedge funds, (2) 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 (3) other investment management and advisory fees.

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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.

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Total fees and commissions earned from providing services such as leasing of space or maintaining: (1) depositor accounts; (2) transfer agent; (3) fiduciary and trust; (4) brokerage and underwriting; (5) mortgage; (6) credit cards; (7) correspondent clearing; and (8) other such services and activities performed for others.

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Fee and commission revenue earned from sources not otherwise specified in the existing taxonomy.

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Fees earned for providing investment advice, research and other services for customers. Such services may include the investment management of mutual funds and separate accounts, and are generally based upon the size of the funds managed.

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The revenue derived from principal investments made by the financial institution. These investments can include (but are not limited to) investments in private equity, alternative investment products, real estate, exchanges and memberships. Principal Investment gains or losses includes realized and unrealized investment gains or losses.

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The caption reflecting the net gain or loss, both realized and unrealized, arising from Principal Trading and Principal Investments.

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Aggregate revenue from both affiliated and unaffiliated entities earned during the period from providing administrative services to investment managers or funds seeking to outsource all or part of their mutual fund service functions. Examples of such administrative or support services include the following: legal advice, centralized cash management, filing of reports with the SEC and the IRS, registering of fund shares, corresponding with shareholders, and determination of compliance with various restrictions. An affiliate is a party that, directly or indirectly through one or more intermediaries, controls, is controlled by, or is under common control with the entity.

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A broker-dealer or other financial entity may buy and sell securities exclusively for its own account, sometimes referred to as proprietary trading. The profit or loss is measured by the difference between the acquisition cost and the selling price or current market or fair value. The net gain or loss, includes both realized and unrealized, from trading cash instruments, equities and derivative contracts (including commodity contracts) that has been recognized during the accounting period for the broker dealer or other financial entity's own account. Include as trading revenue: (1) Revaluation adjustments to the carrying value of cash instruments reported as Trading assets, and Trading liabilities, resulting from the periodic marking to market of such instruments. (2) Revaluation adjustments from the periodic marking to market of interest rate, foreign exchange, equity derivative, and commodity and other derivative contracts held for trading. (3) Incidental income and expense related to the purchase and sale of cash instruments reported as Trading assets, and Trading liabilities, and derivative contracts held for trading. Trading gains and losses, which are composed of both realized and unrealized gains and losses, are generally presented net.

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