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DERIVATIVE INSTRUMENTS - Gain or Loss Recognized in Income on Non-qualifying Strategies (Detail) (Non-qualifying strategies, USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (Loss) Recognized within Net Realized Investment Gains (Losses) $ 161 $ (257) $ (21)
Interest rate swaps
     
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (Loss) Recognized within Net Realized Investment Gains (Losses) (14) (33) 7
Foreign currency swaps
     
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (Loss) Recognized within Net Realized Investment Gains (Losses) 111 (160) 3
Credit default swaps
     
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (Loss) Recognized within Net Realized Investment Gains (Losses) $ 64 $ (64) $ (31)