Basis of Presentation Basis of Presentation (Details) (USD $)	3 Months Ended
	Mar. 31, 2012		Mar. 31, 2011		Dec. 31, 2011		Dec. 31, 2010
Principal Transactions Revenue	$ 2,722,000,000		$ 4,745,000,000
Noninterest Income	14,386,000,000		13,316,000,000
Revenues	26,052,000,000		25,221,000,000
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	6,981,000,000		8,057,000,000
Income tax expense/(benefit)	2,057,000,000		2,502,000,000
Net Income (Loss) Attributable to Parent	4,924,000,000		5,555,000,000
Net Income (Loss) Available to Common Stockholders, Basic	4,577,000,000		5,136,000,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	189,269,000,000		180,598,000,000
Earnings Per Share, Basic	$ 1.20		$ 1.29
Earnings Per Share, Diluted	$ 1.19		$ 1.28
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	6,625,000,000		5,266,000,000
Derivative Assets	85,010,000,000				92,477,000,000
Other Assets	102,826,000,000				104,131,000,000
Assets	2,320,164,000,000	[1]	2,198,161,000,000	[1]	2,265,792,000,000	[1]
Derivative Liabilities	74,767,000,000				74,977,000,000
Liabilities	2,130,895,000,000	[1]			2,082,219,000,000	[1]
Retained Earnings (Accumulated Deficit)	91,888,000,000				88,315,000,000
Stockholders' Equity Attributable to Parent	189,269,000,000				183,573,000,000
Liabilities and Equity	2,320,164,000,000				2,265,792,000,000
Increase (Decrease) in Financial Instruments Used in Operating Activities	4,475,000,000		5,451,000,000
Increase (Decrease) in Prepaid Expense and Other Assets	1,159,000,000		(3,673,000,000)
Increase (Decrease) in Trading Liabilities	4,406,000,000		(13,879,000,000)
Retained Earnings [Member]
Net Income (Loss) Attributable to Parent	4,924,000,000		5,555,000,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	91,888,000,000		78,342,000,000		88,315,000,000		73,998,000,000
Previously reported value
Principal Transactions Revenue	3,382,000,000
Noninterest Income	15,046,000,000
Revenues	26,712,000,000
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	7,641,000,000
Income tax expense/(benefit)	2,258,000,000
Net Income (Loss) Attributable to Parent	5,383,000,000
Net Income (Loss) Available to Common Stockholders, Basic	5,017,000,000
Earnings Per Share, Basic	$ 1,310,000.00
Earnings Per Share, Diluted	$ 1,310,000.00
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	7,084,000,000
Derivative Assets	85,377,000,000
Other Assets	102,625,000,000
Assets	2,320,330,000,000	[1]
Derivative Liabilities	74,474,000,000
Liabilities	2,130,602,000,000	[1]
Retained Earnings (Accumulated Deficit)	92,347,000,000
Stockholders' Equity Attributable to Parent	189,728,000,000
Liabilities and Equity	2,320,330,000,000
Restatement Adjustment [Member]
Principal Transactions Revenue	(660,000,000)
Noninterest Income	(660,000,000)
Revenues	(660,000,000)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	(660,000,000)
Income tax expense/(benefit)	(201,000,000)
Net Income (Loss) Attributable to Parent	(459,000,000)
Net Income (Loss) Available to Common Stockholders, Basic	(440,000,000)
Earnings Per Share, Basic	$ (110,000.00)
Earnings Per Share, Diluted	$ (120,000.00)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	(459,000,000)
Derivative Assets	(367,000,000)
Other Assets	201,000,000
Assets	(166,000,000)	[1]
Derivative Liabilities	293,000,000
Liabilities	293,000,000	[1]
Retained Earnings (Accumulated Deficit)	(459,000,000)
Stockholders' Equity Attributable to Parent	(459,000,000)
Liabilities and Equity	(166,000,000)
Parent Company [Member]
Risk-weighted assets	$ 1,300,185,000,000				$ 1,221,198,000,000
Tier One Risk Based Capital to Risk Weighted Assets	11.90%				12.30%
Capital to Risk Weighted Assets	14.90%				15.40%

[1] (a)The following table presents information on assets and liabilities related to VIEs that are consolidated by the Firm at March 31, 2012, and December 31, 2011. The difference between total VIE assets and liabilities represents the Firm’s interests in those entities, which were eliminated in consolidation.