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INVESTMENTS (AVAILABLE FOR SALE SECURITIES) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Dec. 31, 2011
Schedule of Available-for-sale Securities [Line Items]          
Available-for-sale Securities, Amortized Cost Basis $ 30,589   $ 30,589   $ 30,227
Gross Unrealized Gains 2,918   2,918   2,470
Gross Unrealized Losses 476   476   686
Fair Value 33,031   33,031   32,011
OTTI in AOCI (3) 18   18   28
Available For Sale Securities Debt Maturities Amortized Cost [Abstract]          
Available For Sale Securities Debt Maturities Within One Year Amortized Cost 2,460   2,460    
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis 7,290   7,290    
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis 9,701   9,701    
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis 6,765   6,765    
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis 29,383   29,383    
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]          
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 2,495   2,495    
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 7,861   7,861    
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 10,708   10,708    
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 7,843   7,843    
Available For Sale Securities, Debt Maturities, Fair Value 31,839   31,839    
Fixed Maturities - Credit Loss Impairments          
Balances at beginning of period (334) (306) (332) (329)  
Previously recognized impairments on securities that matured, paid, prepaid or sold 14 0 15 23  
Recognized impairments on securities impaired to fair value this period (1) 0 0 0 0  
Impairments recognized this period on securities not previously impaired (17) (22) (20) (22)  
Additional impairments this period on securities previously impaired (32) 0 (32) 0  
Increases due to passage of time on previously recorded credit losses 0 0 0 0  
Accretion of previously recognized impairments due to increases in expected cash flows 0 0 0 0  
Balances at end of period (369) (328) (369) (328)  
Available For Sale Fixed Maturities Proceeds Gross Gains And Gross Losses From Sales And Other Than Temporary Impairments [Abstract]          
Proceeds From Sale Of Available For Sale Securities 28 62 28 273  
Available For Sale Securities Gross Realized Gains 3 2 3 4  
Available For Sale Securities Gross Realized Losses (9) 0 (9) (6)  
Total other-than-temporary impairment losses (50) (23) (53) (23)  
Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest 1 1 1 1  
Credit losses recognized in earnings (loss) (49) (22) (52) (22)  
Corporate Debt Securities [Member]
         
Schedule of Available-for-sale Securities [Line Items]          
Available-for-sale Securities, Amortized Cost Basis 20,717   20,717   21,444
Gross Unrealized Gains 2,073   2,073   1,840
Gross Unrealized Losses 71   71   147
Fair Value 22,719   22,719   23,137
OTTI in AOCI (3) 0   0   0
U.S.Treasury, Govt and Agency [Member]
         
Schedule of Available-for-sale Securities [Line Items]          
Available-for-sale Securities, Amortized Cost Basis 4,600   4,600   3,598
Gross Unrealized Gains 540   540   350
Gross Unrealized Losses 0   0   0
Fair Value 5,140   5,140   3,948
OTTI in AOCI (3) 0   0   0
US States and Political Subdivisions Debt Securities [Member]
         
Schedule of Available-for-sale Securities [Line Items]          
Available-for-sale Securities, Amortized Cost Basis 448   448   478
Gross Unrealized Gains 79   79   64
Gross Unrealized Losses 1   1   2
Fair Value 526   526   540
OTTI in AOCI (3) 0   0   0
Foreign Government Debt Securities [Member]
         
Schedule of Available-for-sale Securities [Line Items]          
Available-for-sale Securities, Amortized Cost Basis 451   451   461
Gross Unrealized Gains 71   71   65
Gross Unrealized Losses 0   0   1
Fair Value 522   522   525
OTTI in AOCI (3) 0   0   0
Commercial Mortgage Backed Securities [Member]
         
Schedule of Available-for-sale Securities [Line Items]          
Available-for-sale Securities, Amortized Cost Basis 1,231   1,231   1,306
Gross Unrealized Gains 10   10   7
Gross Unrealized Losses 335   335   411
Fair Value 906   906   902
OTTI in AOCI (3) 13   13   22
Available For Sale Securities Debt Maturities Amortized Cost [Abstract]          
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis 1,231   1,231    
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]          
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value 906   906    
Residential Mortgage Backed Securities [Member]
         
Schedule of Available-for-sale Securities [Line Items]          
Available-for-sale Securities, Amortized Cost Basis 1,713   1,713   1,556
Gross Unrealized Gains 87   87   90
Gross Unrealized Losses 0   0   0
Fair Value 1,800   1,800   1,646
OTTI in AOCI (3) 0   0   0
Available For Sale Securities Debt Maturities Amortized Cost [Abstract]          
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis 1,713   1,713    
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]          
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value 1,800   1,800    
Asset-backed Securities [Member]
         
Schedule of Available-for-sale Securities [Line Items]          
Available-for-sale Securities, Amortized Cost Basis 223   223   260
Gross Unrealized Gains 11   11   15
Gross Unrealized Losses 8   8   11
Fair Value 226   226   264
OTTI in AOCI (3) 5   5   6
Available For Sale Securities Debt Maturities Amortized Cost [Abstract]          
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis 223   223    
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]          
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value 226   226    
Redeemable Preferred Stock [Member]
         
Schedule of Available-for-sale Securities [Line Items]          
Available-for-sale Securities, Amortized Cost Basis 1,187   1,187   1,106
Gross Unrealized Gains 46   46   38
Gross Unrealized Losses 61   61   114
Fair Value 1,172   1,172   1,030
OTTI in AOCI (3) 0   0   0
Fixed Maturities [Member]
         
Schedule of Available-for-sale Securities [Line Items]          
Available-for-sale Securities, Amortized Cost Basis 30,570   30,570   30,209
Gross Unrealized Gains 2,917   2,917   2,469
Gross Unrealized Losses 476   476   686
Fair Value 33,011   33,011   31,992
OTTI in AOCI (3) 18   18   28
Equity Securities [Member]
         
Schedule of Available-for-sale Securities [Line Items]          
Available-for-sale Securities, Amortized Cost Basis 19   19   18
Gross Unrealized Gains 1   1   1
Gross Unrealized Losses 0   0   0
Fair Value 20   20   19
OTTI in AOCI (3) 0   0   0
Trading Fixed Maturities [Member]
         
Schedule of Available-for-sale Securities [Line Items]          
Available-for-sale Securities, Amortized Cost Basis 255   255   172
Gross Unrealized Gains 4   4   4
Gross Unrealized Losses 4   4   4
Fair Value $ 255   $ 255   $ 172