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CONTRACTHOLDER BONUS INTEREST CREDITS (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Changes in the deferred asset for contractholder bonus interest credits    
Balance, beginning of year $ 383 $ 518
Contractholder bonus interest credits deferred 17 15
Balance true-up 174 0
Amortization charged to income (40) (150)
Balance, End of Year $ 534 $ 383