Derivatives and Hedging Activities (Details 1) (USD $) In Millions, unless otherwise specified	Jun. 30, 2011	Dec. 31, 2010
Fair Value of Derivatives on a Gross Basis
Derivative assets not accounted for as hedges	$ 739,782	$ 780,761
Derivative liabilities not accounted for as hedges	645,510	690,808
Number of Contracts	1,426,903	1,223,782
Derivative assets accounted for as hedges	19,173	23,402
Derivative liabilities accounted for as hedges	166	195
Gross Fair Value of Derivative Asset Contracts	758,955	804,163
Gross Fair Value of Derivative Liability Contracts	645,676	691,003
Financial instruments owned, at fair value (includes $57,687 and $51,010 pledged as collateral as of June 2011 and December 2010, respectively)	370,605	356,953
Financial instruments sold, but not yet purchased, at fair value	149,639	140,717
Derivative [Member]
Fair Value of Derivatives on a Gross Basis
Financial instruments owned, at fair value (includes $57,687 and $51,010 pledged as collateral as of June 2011 and December 2010, respectively)	73,524	73,293
Financial instruments sold, but not yet purchased, at fair value	47,492	54,730
Counterparty Netting [Member]
Fair Value of Derivatives on a Gross Basis
Gross Fair Value of Derivative Asset Contracts	(582,524)	(620,553)
Gross Fair Value of Derivative Liability Contracts	(582,524)	(620,553)
Cash collateral netting [Member]
Fair Value of Derivatives on a Gross Basis
Gross Fair Value of Derivative Asset Contracts	(102,907)	(110,317)
Gross Fair Value of Derivative Liability Contracts	(15,660)	(15,720)
Interest Rate Contract [Member]
Fair Value of Derivatives on a Gross Basis
Derivative assets not accounted for as hedges	432,136	463,145
Derivative liabilities not accounted for as hedges	388,733	422,514
Derivative assets accounted for as hedges	19,169	23,396
Derivative liabilities accounted for as hedges	18	33
Interest Rate Contract [Member] \| Derivative Contract not designated as hedges [Member]
Fair Value of Derivatives on a Gross Basis
Number of Contracts	283,299	272,279
Interest Rate Contract [Member] \| Derivative Contracts Accounted for as Hedges [Member]
Fair Value of Derivatives on a Gross Basis
Number of Contracts	956	997
Credit Risk Contract [Member]
Fair Value of Derivatives on a Gross Basis
Derivative assets not accounted for as hedges	120,043	127,153
Derivative liabilities not accounted for as hedges	100,329	104,407
Credit Risk Contract [Member] \| Derivative Contract not designated as hedges [Member]
Fair Value of Derivatives on a Gross Basis
Number of Contracts	357,818	367,779
Foreign Exchange Contract [Member]
Fair Value of Derivatives on a Gross Basis
Derivative assets not accounted for as hedges	84,280	87,959
Derivative liabilities not accounted for as hedges	67,173	70,273
Derivative assets accounted for as hedges	4	6
Derivative liabilities accounted for as hedges	148	162
Foreign Exchange Contract [Member] \| Derivative Contract not designated as hedges [Member]
Fair Value of Derivatives on a Gross Basis
Number of Contracts	288,321	222,706
Foreign Exchange Contract [Member] \| Derivative Contracts Accounted for as Hedges [Member]
Fair Value of Derivatives on a Gross Basis
Number of Contracts	68	72
Commodity Contract [Member]
Fair Value of Derivatives on a Gross Basis
Derivative assets not accounted for as hedges	35,348	36,689
Derivative liabilities not accounted for as hedges	37,468	41,666
Commodity Contract [Member] \| Derivative Contract not designated as hedges [Member]
Fair Value of Derivatives on a Gross Basis
Number of Contracts	74,870	70,890
Equity Contract [Member]
Fair Value of Derivatives on a Gross Basis
Derivative assets not accounted for as hedges	67,975	65,815
Derivative liabilities not accounted for as hedges	$ 51,807	$ 51,948
Equity Contract [Member] \| Derivative Contract not designated as hedges [Member]
Fair Value of Derivatives on a Gross Basis
Number of Contracts	421,571	289,059
Derivative Contract not designated as hedges [Member]
Fair Value of Derivatives on a Gross Basis
Number of Contracts	1,425,879	1,222,713
Derivative Contracts Accounted for as Hedges [Member]
Fair Value of Derivatives on a Gross Basis
Number of Contracts	1,024	1,069

Fair value of a derivative asset (or nonderivative instrument) that is designated and qualifies as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 205G

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44C
-Subparagraph a
-Clause 1

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Fair value of a derivative asset that is not designated or qualifying as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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Fair value of a derivative liability (or nonderivative instrument) that is designated and qualifies as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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Fair value of a derivative liability that is not designated or qualifying as a hedging instrument, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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The number of derivative instruments of a particular group held by the entity.

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The aggregate fair value as of the balance sheet date of financial instruments and other positions owned by the entity including: (1) mortgages, mortgage-backed and asset backed securities; (2) US government and agency obligations; (3) state and municipal government obligations; (4) other sovereign government debt; (5) corporate obligations; (6) corporate equities; (7) principal investments; (8) derivative contracts; and (9) physical commodities. Includes both pledged and unpledged holdings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Audit and Accounting Guide (AAG)
-Number AAG-BRD
-Chapter 4
-Paragraph 38, 40
-IssueDate 2006-05-01

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Audit and Accounting Guide (AAG)
-Number AAG-BRD
-Chapter 4
-Paragraph 80
-Subparagraph Exhibit 4-3
-IssueDate 2006-05-01

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Carrying value as of the balance sheet date of obligations incurred from short sales.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Audit and Accounting Guide (AAG)
-Number AAG-BRD
-Chapter 7
-Paragraph 40
-IssueDate 2006-05-01

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Audit and Accounting Guide (AAG)
-Number AAG-BRD
-Chapter 4
-Paragraph 38
-IssueDate 2006-05-01

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Audit and Accounting Guide (AAG)
-Number AAG-BRD
-Chapter 7
-Paragraph 19
-IssueDate 2006-05-01

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Audit and Accounting Guide (AAG)
-Number AAG-BRD
-Chapter 7
-Paragraph 2
-IssueDate 2006-05-01

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