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Fair Value Measurement - Credit Adjustments Reflected on Balance Sheet (Details 5) (USD $)
In Millions
Jun. 30, 2011
Dec. 31, 2010
Credit adjustments [Abstract]    
Derivative receivables balance $ 77,383 $ 80,481
Derivatives CVA (4,075) (4,362)
Derivative payables 63,668 69,219
Derivatives DVA (836) (882)
Structured notes balance 55,005 53,139
Structured notes DVA $ (1,318) $ (1,153)