Commitments, Pledged Assets, Collateral and Contingencies (Details) (USD $)	12 Months Ended
Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
Future minimum rental payments under operating leases
2011	$ 1,884,000,000
2012	1,804,000,000
2013	1,674,000,000
2014	1,497,000,000
2015	1,363,000,000
After 2015	7,778,000,000
Total minimum payments required	16,000,000,000
Less: Sublease rentals under noncancelable subleases	(1,848,000,000)
Net minimum payment required	14,152,000,000
Total rental expense
Gross rental expense	2,212,000,000	1,884,000,000	1,917,000,000
Sublease rental income	(545,000,000)	(172,000,000)	(415,000,000)
Net rental expense	1,667,000,000	1,712,000,000	1,502,000,000
Significant components of assets pledged
Assets pledged, securities	112,100,000,000	155,300,000,000
Financial Instruments Owned and Pledged as Collateral Fair Value Loans	214,800,000,000	285,500,000,000
Assets pledged, trading assets and other	123,200,000,000	84,600,000,000
Total assets pledged	450,100,000,000	525,400,000,000
Commitments, pledged assets, collateral and contingencies (Numeric) [Abstract]
Financial instruments pledged by the Firm that may not be sold or repledged by the secured parties	288,700,000,000	344,600,000,000
Assets accepted by the Firm as collateral that it could sell or repedge, deliver or otherwise use at fair value	655,000,000,000	635,600,000,000
Assets accepted by the Firm as collateral that the Firm has sold or repledged	$ 521,300,000,000	$ 472,700,000,000

Numeric abstract related to the disclosure of commitments, pledged assets, collateral and contingencies.

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Carrrying value of financial instrument held by the entity for its own account (proprietary securities) for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions.

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Carrying value of loans held by the entity for its own account (proprietary securities) for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions.

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Fair value of securities held by the entity for its own account (proprietary securities) for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions.

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Fair value of trading assets and other financial instruments held by the entity for its own account (proprietary securities) for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions.

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- Definition

The total of future contractually required payments on leases defined as operating, net of contractually required future rental payments receivable on noncancelable subleasing arrangements.

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Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

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This is the fair value as of the date of each statement of financial position presented of the collateral that is permitted by contact or custom to sell or re-pledge.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 140

-Paragraph 17

-Subparagraph a(3)

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Fair value as of the balance sheet date of the collateral that has been re-pledged, delivered, or otherwise used (generally under repurchase agreements, securities lending agreements or to cover short sales.)

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Fair value of financial instrument held by the entity for its own account (proprietary securities) for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions where counterparty does not have the right to re-pledge such.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Staff Position (FSP)

-Number FAS140-4 and FIN46(R)-8

-Paragraph B6

-Subparagraph b

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 140

-Paragraph 17

-Subparagraph a(2)

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The total of future contractually required payments on leases defined as operating.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 13

-Paragraph 122

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 13

-Paragraph 16

-Subparagraph b(i)

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For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments due within one year of the balance sheet date relating to leases defined as operating.

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Contractually required future rental payments receivable on noncancelable subleasing arrangements.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 13

-Paragraph 16

-Subparagraph b(ii)

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For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments due within the fifth year of the balance sheet date relating to leases defined as operating.

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For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments due within the fourth year of the balance sheet date relating to leases defined as operating.

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For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments due within the third year of the balance sheet date relating to leases defined as operating.

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For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments due within the second year of the balance sheet date relating to leases defined as operating.

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For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments due after the fifth year from the balance sheet date on leases defined as operating.

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- Definition

The amount of revenue recognized for the period under subleasing arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Technical Bulletin (FTB)

-Number 88-1

-Paragraph 9

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This element represents the payments that the lessee is obligated to make or can be required to make in connection with a property under the terms of an agreement classified as an operating lease, excluding contingent rentals and a guarantee by the lessee of the lessor's debt and the lessee's obligation to pay (apart from the rental payments) executory costs such as insurance, maintenance, and taxes.

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