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FAIR VALUE MEASUREMENTS (Details 2) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Change in accounting estimate      
DAC amortization $ 8,019 $ 9,134 $ 9,442
Embedded Policy Derivatives
     
Change in accounting estimate      
Reduction in the fair value of the embedded derivative liabilities   336  
DAC amortization   $ 173