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GMDB, GMIB, GWBL AND NO LAPSE GUARANTEE FEATURES (DETAILS) (USD $)
In Millions, unless otherwise specified
6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Movement In Guaranteed Benefit Liability Gross [Line Items]    
Balance, January 1, $ 5,723 $ 3,576
Paid guarantee benefits (166) (104)
Other changes in reserve 449 321
Balance, end of period 6,006 3,793
Guaranteed Minimum Death Benefit [Member]
   
Movement In Guaranteed Benefit Liability Gross [Line Items]    
Balance, January 1, 1,593 1,265
Paid guarantee benefits (128) (87)
Other changes in reserve 174 159
Balance, end of period 1,639 1,337
Guaranteed Minimum Death Benefit Reinsurance Ceded [Abstract]    
Balance, beginning of year 716 533
Paid guarantee benefits (53) (36)
Other changes in reserves 105 88
Balance, end of period 768 585
Guaranteed Minimum Income Benefit [Member]
   
Movement In Guaranteed Benefit Liability Gross [Line Items]    
Balance, January 1, 4,130 2,311
Paid guarantee benefits (38) (17)
Other changes in reserve 275 162
Balance, end of period $ 4,367 $ 2,456