Condensed Consolidated Statements of Financial Condition (Unaudited) (Parenthetical) (USD $) In Millions, except Share data	Jun. 30, 2011	Dec. 31, 2010
Assets
Securities segregated for regulatory and other purposes	$ 42,343	$ 36,182
Securities purchased under agreements to resell and federal funds sold at fair value	162,285	188,355
Securities borrowed at fair value	61,865	48,822
Receivables from customers and counterparties at fair value	7,674	7,202
Financial instruments owned, at fair value pledged as collateral	57,687	51,010
Liabilities and shareholders' equity
Deposits at fair value	2,165	1,975
Securities loaned at fair value	4,839	1,514
Other secured financings at fair value	26,448	31,794
Unsecured short-term borrowings, including the current portion of unsecured long-term borrowings, at fair value	22,334	22,116
Unsecured long-term borrowings at fair value	20,130	18,171
Other liabilities and accrued expenses at fair value	7,487	2,972
Shareholders' equity
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, liquidation preference	$ 3,100	$ 8,100
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	4,000,000,000	4,000,000,000
Common stock, shares issued	790,705,627	770,949,268
Common stock, shares outstanding	507,855,774	507,530,772
Nonvoting common stock, par value	$ 0.01	$ 0.01
Nonvoting common stock, shares authorized	200,000,000	200,000,000
Treasury stock, par value	$ 0.01	$ 0.01
Treasury stock, shares	282,849,855	263,418,498