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Financial Instruments Gain (Loss) Recognized on Derivatives Not Designated as Hedging Table (Details) (Not Designated as Hedging Instrument [Member], Net gain (loss) from investment activities [Member], USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Derivative [Line Items]    
Gain (Loss) Recognized in Income $ (51) [1] $ (628) [1]
Equity contracts
   
Derivative [Line Items]    
Gain (Loss) Recognized in Income (176) [1] (645) [1]
Foreign exchange contracts
   
Derivative [Line Items]    
Gain (Loss) Recognized in Income 0 [1] 68 [1]
Credit contracts
   
Derivative [Line Items]    
Gain (Loss) Recognized in Income (6) [1] 0 [1]
Commodity contracts
   
Derivative [Line Items]    
Gain (Loss) Recognized in Income $ 131 [1] $ (51) [1]
[1] Gains (losses) recognized on derivatives are classified in net (loss) gain from investment activities in our consolidated statements of operations for our Investment segment and are included in other income (loss), net for all other segments.