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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 payables63,66869,219
Derivatives DVA(836)(882)
Structured notes balance55,00553,139
Structured notes DVA$ (1,318)$ (1,153)