Consolidated Statements of Financial Condition (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Assets
Cash and cash equivalents	$ 72,669	$ 56,008
Cash and securities segregated for regulatory and other purposes (includes $30,484 and $42,014 at fair value as of December 2012 and December 2011, respectively)	49,671	64,264
Collateralized agreements:
Securities purchased under agreements to resell and federal funds sold (includes $141,331 and $187,789 at fair value as of December 2012 and December 2011, respectively)	141,334	187,789
Securities borrowed (includes $38,395 and $47,621 at fair value as of December 2012 and December 2011, respectively)	136,893	153,341
Receivables from brokers, dealers and clearing organizations	18,480	14,204
Receivables from customers and counterparties (includes $7,866 and $9,682 at fair value as of December 2012 and December 2011, respectively)	72,874	60,261
Financial instruments owned, at fair value (includes $67,177 and $53,989 pledged as collateral as of December 2012 and December 2011, respectively)	407,011	364,206
Other assets (includes $13,426 and $0 at fair value as of December 2012 and December 2011, respectively)	39,623	23,152
Total assets	938,555	923,225
Liabilities and shareholders' equity
Deposits (includes $5,100 and $4,526 at fair value as of December 2012 and December 2011, respectively)	70,124	46,109
Collateralized financings:
Securities sold under agreements to repurchase, at fair value	171,807	164,502
Securities loaned (includes $1,558 and $107 at fair value as of December 2012 and December 2011, respectively)	13,765	7,182
Other secured financings (includes $30,337 and $30,019 at fair value as of December 2012 and December 2011, respectively)	32,010	37,364
Payables to brokers, dealers and clearing organizations	5,283	3,667
Payables to customers and counterparties	189,202	194,625
Financial instruments sold, but not yet purchased, at fair value	126,644	145,013
Unsecured short-term borrowings, including the current portion of unsecured long-term borrowings (includes $17,595 and $17,854 at fair value as of December 2012 and December 2011, respectively)	44,304	49,038
Unsecured long-term borrowings (includes $12,593 and $17,162 at fair value as of December 2012 and December 2011, respectively)	167,305	173,545
Other liabilities and accrued expenses (includes $12,043 and $9,486 at fair value as of December 2012 and December 2011, respectively)	42,395	31,801
Total liabilities	862,839	852,846
Commitments, contingencies and guarantees
Shareholders' equity
Preferred stock, par value $0.01 per share; aggregate liquidation preference of $6,200 and $3,100 as of December 2012 and December 2011, respectively	6,200	3,100
Common stock, par value $0.01 per share; 4,000,000,000 shares authorized, 816,807,400 and 795,555,310 shares issued as of December 2012 and December 2011, respectively, and 465,148,387 and 485,467,565 shares outstanding as of December 2012 and December 2011, respectively	8	8
Restricted stock units and employee stock options	3,298	5,681
Nonvoting common stock, par value $0.01 per share; 200,000,000 shares authorized, no shares issued and outstanding	0	0
Additional paid-in capital	48,030	45,553
Retained earnings	65,223	58,834
Accumulated other comprehensive loss	(193)	(516)
Stock held in treasury, at cost, par value $0.01 per share; 351,659,015 and 310,087,747 shares as of December 2012 and December 2011, respectively	(46,850)	(42,281)
Total shareholders' equity	75,716	70,379
Total liabilities and shareholders' equity	$ 938,555	$ 923,225