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Investments and Derivative Instruments Level 4 Net Realized Capital Gains (Losses) (Details) - Derivative, Name [Domain] - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount $ 66,321   $ 66,321   $ 72,850
Derivative, Fair Value, Net (605)   (605)   (639)
Gain (Loss) on Investments [Abstract]          
Gain on Derivative Instruments, Pretax 121 $ 122 318 $ 305  
Loss on Derivative Instruments, Pretax (112) (33) (260) (162)  
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net 11 7 23 29  
Periodic Net Coupon Settlements on Credit Derivatives 4 2 5 1  
Total Realized Investment Gains (Losses) 9 (4) 14 (39)  
Gain (Loss) on Investments, Excluding Other than Temporary Impairments 20 3 37 (10)  
Derivative, Gain (Loss) on Derivative, Net (27) (21)      
Proceeds from Sale of Available-for-sale Securities 5,600 5,800 11,800 14,300  
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost 12,853   12,853   6,318
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 12,558   12,558   6,174
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 295   295   144
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost 2,980   2,980   4,667
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 2,841   2,841   4,429
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 136   136   241
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost 15,833   15,833   10,985
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 15,399   15,399   10,603
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss 431   431   385
Derivative Asset, Fair Value, Gross Asset 1,052   1,052   1,175
Derivative Liability, Fair Value, Gross Liability 1,626   1,626   1,741
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement 1,162   1,162   1,267
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement 1,767   1,767   1,906
GMWB Hedging Instruments [Member] | UNITED STATES          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 11,732   11,732   14,442
Derivative, Fair Value, Net 134   134   174
Three Win Related Foreign Currency Swaps [Member] | JAPAN          
Gain (Loss) on Investments [Abstract]          
Change in Unrealized Gain (Loss) on Hedged Item in Foreign Currency Fair Value Hedge 16 (18) 16 (46)  
Mortgages [Member]          
Gain (Loss) on Investments [Abstract]          
Valuation Allowances and Reserves, Adjustments 0 3 3 3  
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]          
Gain (Loss) on Investments [Abstract]          
Gain (Loss) on Investments, Excluding Other than Temporary Impairments 6 82 43 125  
Collateralized Debt Obligations [Member]          
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost [1] 928   928   748
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value [1] 925   925   743
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss [1] 3   3   5
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost [1] 1,232   1,232   1,489
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value [1] 1,217   1,217   1,461
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss [1] 12   12   31
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost [1] 2,160   2,160   2,237
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [1] 2,142   2,142   2,204
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [1] 15   15   36
Asset-backed Securities [Member]          
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost 836   836   897
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 834   834   893
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 2   2   4
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost 396   396   473
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 367   367   440
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 29   29   33
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost 1,232   1,232   1,370
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 1,201   1,201   1,333
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss 31   31   37
Commercial Mortgage Backed Securities [Member]          
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost 930   930   230
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 912   912   227
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 18   18   3
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost 194   194   319
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 184   184   306
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 10   10   13
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost 1,124   1,124   549
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 1,096   1,096   533
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss 28   28   16
Corporate Debt Securities [Member]          
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost 6,266   6,266   3,082
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 6,084   6,084   2,980
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 182   182   102
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost 575   575   1,177
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 523   523   1,068
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 52   52   109
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost 6,841   6,841   4,259
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 6,607   6,607   4,048
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss 234   234   211
Foreign Government Debt Securities [Member]          
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost 460   460   363
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 445   445   349
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 15   15   14
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost 109   109   227
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 100   100   212
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 9   9   15
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost 569   569   590
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 545   545   561
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss 24   24   29
Municipal Bonds [Member]          
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost 1,159   1,159   74
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 1,128   1,128   73
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 31   31   1
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost 35   35   86
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 32   32   82
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 3   3   4
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost 1,194   1,194   160
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 1,160   1,160   155
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss 34   34   5
Residential Mortgage Backed Securities [Member]          
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost 1,064   1,064   320
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 1,057   1,057   318
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 7   7   2
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost 310   310   433
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 297   297   416
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 13   13   17
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost 1,374   1,374   753
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 1,354   1,354   734
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss 20   20   19
US Treasury Securities [Member]          
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost 846   846   432
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 827   827   431
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 19   19   1
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost 62   62   361
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 61   61   357
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 1   1   4
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost 908   908   793
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 888   888   788
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss 20   20   5
Debt Securities [Member]          
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost 12,489   12,489   6,146
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 12,212   12,212   6,014
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 277   277   132
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost 2,913   2,913   4,565
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 2,781   2,781   4,342
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 129   129   226
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost 15,402   15,402   10,711
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 14,993   14,993   10,356
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss 406   406   358
Equity Securities [Member]          
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Amortized Cost [2] 364   364   172
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value [2] 346   346   160
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss [2] 18   18   12
Available-for-sale Securities Continuous Unrealized Loss Position Twelve Months or Longer Amortized Cost [2] 67   67   102
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value [2] 60   60   87
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss [2] 7   7   15
Available-for-sale Securities Continuous Unrealized Loss Position Amortized Cost [2] 431   431   274
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [2] 406   406   247
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [2] 25   25   27
Other Investments [Member]          
Gain (Loss) on Investments [Abstract]          
Total Realized Investment Gains (Losses) [3] 34 (64) 7 (135)  
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 4,138   4,138   4,142
Derivative, Fair Value, Net 7   7   25
Gain (Loss) on Investments [Abstract]          
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net 21 23 28 47  
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Derivative Asset, Fair Value, Gross Asset 50   50   55
Derivative Liability, Fair Value, Gross Liability 43   43   30
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest Rate Contract [Member]          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 3,995   3,995   3,999
Derivative, Fair Value, Net 27   27   44
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Derivative Asset, Fair Value, Gross Asset 46   46   52
Derivative Liability, Fair Value, Gross Liability 19   19   8
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign Exchange Contract [Member]          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 143   143   143
Derivative, Fair Value, Net (20)   (20)   (19)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Derivative Asset, Fair Value, Gross Asset 4   4   3
Derivative Liability, Fair Value, Gross Liability 24   24   22
Designated as Hedging Instrument [Member] | Fair Value Hedging [Member]          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 49   49   32
Derivative, Fair Value, Net 0   0   0
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Derivative Asset, Fair Value, Gross Asset 0   0   0
Derivative Liability, Fair Value, Gross Liability 0   0   0
Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] | Interest Rate Contract [Member]          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 49   49   32
Derivative, Fair Value, Net 0   0   0
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Derivative Asset, Fair Value, Gross Asset 0   0   0
Derivative Liability, Fair Value, Gross Liability 0   0   0
Not Designated as Hedging Instrument [Member]          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 62,134   62,134   68,676
Derivative, Fair Value, Net (612)   (612)   (664)
Gain (Loss) on Investments [Abstract]          
Derivative, Gain (Loss) on Derivative, Net (11) [4] (107) [4] (46) (167)  
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Derivative Asset, Fair Value, Gross Asset 1,112   1,112   1,212
Derivative Liability, Fair Value, Gross Liability 1,724   1,724   1,876
Not Designated as Hedging Instrument [Member] | GMWB Hedging Instruments [Member] | UNITED STATES          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 11,732   11,732   14,442
Derivative, Fair Value, Net 134   134   174
Gain (Loss) on Investments [Abstract]          
Derivative, Gain (Loss) on Derivative, Net (66) (54) (53) (71)  
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Derivative Asset, Fair Value, Gross Asset 246   246   289
Derivative Liability, Fair Value, Gross Liability 112   112   115
Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member]          
Gain (Loss) on Investments [Abstract]          
Derivative, Gain (Loss) on Derivative, Net 7 (89) (5) (145)  
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]          
Gain (Loss) on Investments [Abstract]          
Derivative, Gain (Loss) on Derivative, Net 1 (5) 8 (4)  
Not Designated as Hedging Instrument [Member] | Three Win Related Foreign Currency Swaps [Member] | JAPAN          
Gain (Loss) on Investments [Abstract]          
Derivative, Gain (Loss) on Derivative, Net [5] (17) 13      
Not Designated as Hedging Instrument [Member] | Macro Hedge Program [Member] | UNITED STATES          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 4,591   4,591   6,383
Derivative, Fair Value, Net 165   165   141
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Derivative Asset, Fair Value, Gross Asset 200   200   180
Derivative Liability, Fair Value, Gross Liability 35   35   39
Coinsurance and Modified Coinsurance Reinsurance Contracts [Member] | Not Designated as Hedging Instrument [Member]          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 921   921   974
Derivative, Fair Value, Net 60   60   34
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Derivative Asset, Fair Value, Gross Asset 60   60   34
Derivative Liability, Fair Value, Gross Liability 0   0   0
Put Option [Member] | Not Designated as Hedging Instrument [Member]          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 500   500   500
Derivative, Fair Value, Net 9   9   12
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Derivative Asset, Fair Value, Gross Asset 9   9   12
Derivative Liability, Fair Value, Gross Liability 0   0   0
GMWB Reinsurance [Member] | Not Designated as Hedging Instrument [Member] | UNITED STATES          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 3,366   3,366   3,659
Derivative, Fair Value, Net 50   50   56
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Derivative Asset, Fair Value, Gross Asset 50   50   56
Derivative Liability, Fair Value, Gross Liability 0   0   0
GMWB Product Derivatives [Member] | Not Designated as Hedging Instrument [Member] | UNITED STATES          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 16,361   16,361   17,908
Derivative, Fair Value, Net (112)   (112)   (139)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Derivative Asset, Fair Value, Gross Asset 0   0   0
Derivative Liability, Fair Value, Gross Liability 112   112   139
Commodity Option [Member] | Not Designated as Hedging Instrument [Member]          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 637   637   0
Derivative, Fair Value, Net 3   3   0
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Derivative Asset, Fair Value, Gross Asset 3   3   0
Derivative Liability, Fair Value, Gross Liability 0   0   0
Equity Contract [Member] | GMWB Hedging Instruments [Member] | UNITED STATES          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 1,719   1,719   3,761
Derivative, Fair Value, Net 10   10   39
Equity Contract [Member] | Not Designated as Hedging Instrument [Member]          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 129   129   635
Derivative, Fair Value, Net (1)   (1)   2
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Derivative Asset, Fair Value, Gross Asset 28   28   31
Derivative Liability, Fair Value, Gross Liability 29   29   29
Credit Derivatives in Offsetting Positions [Member] | Not Designated as Hedging Instrument [Member]          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 4,158   4,158   5,343
Derivative, Fair Value, Net (2)   (2)   (3)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Derivative Asset, Fair Value, Gross Asset 46   46   53
Derivative Liability, Fair Value, Gross Liability 48   48   56
Credit Default Swap, Selling Protection [Member] | Not Designated as Hedging Instrument [Member]          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 3,067   3,067   1,487
Derivative, Fair Value, Net 4   4   3
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Derivative Asset, Fair Value, Gross Asset 30   30   14
Derivative Liability, Fair Value, Gross Liability 26   26   11
Credit Default Swap, Buying Protection [Member] | Not Designated as Hedging Instrument [Member]          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 209   209   595
Derivative, Fair Value, Net 2   2   (6)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Derivative Asset, Fair Value, Gross Asset 4   4   4
Derivative Liability, Fair Value, Gross Liability 2   2   10
Three Win Related Foreign Currency Swaps [Member] | Not Designated as Hedging Instrument [Member] | JAPAN          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 1,319   1,319   1,319
Derivative, Fair Value, Net (458)   (458)   (427)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Derivative Asset, Fair Value, Gross Asset 0   0   0
Derivative Liability, Fair Value, Gross Liability 458   458   427
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member]          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 186   186   177
Derivative, Fair Value, Net 8   8   1
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Derivative Asset, Fair Value, Gross Asset 8   8   3
Derivative Liability, Fair Value, Gross Liability 0   0   2
Interest Rate Contract [Member] | GMWB Hedging Instruments [Member] | UNITED STATES          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 3,520   3,520   3,640
Derivative, Fair Value, Net 8   8   11
Interest Rate Contract [Member] | Not Designated as Hedging Instrument [Member]          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 14,958   14,958   15,254
Derivative, Fair Value, Net (474)   (474)   (512)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Derivative Asset, Fair Value, Gross Asset 428   428   536
Derivative Liability, Fair Value, Gross Liability 902   902   1,048
Macro Hedge Program [Member] | UNITED STATES          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 4,591   4,591   6,383
Derivative, Fair Value, Net 165   165   141
Macro Hedge Program [Member] | Not Designated as Hedging Instrument [Member] | UNITED STATES          
Gain (Loss) on Investments [Abstract]          
Derivative, Gain (Loss) on Derivative, Net (23) $ (15) (27) $ (25)  
Other Liabilities [Member]          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 19,774   19,774   26,791
Derivative, Fair Value, Net (882)   (882)   (930)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Derivative Asset, Fair Value, Gross Asset 462   462   551
Derivative Liability, Fair Value, Gross Liability 1,344   1,344   1,481
Fixed Maturities [Member]          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 448   448   454
Derivative, Fair Value, Net (3)   (3)   2
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Derivative Asset, Fair Value, Gross Asset 0   0   2
Derivative Liability, Fair Value, Gross Liability 3   3   0
Other Investments [Member]          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 25,401   25,401   23,014
Derivative, Fair Value, Net 308   308   364
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Derivative Asset, Fair Value, Gross Asset 590   590   624
Derivative Liability, Fair Value, Gross Liability 282   282   260
Reinsurance Recoverable [Member]          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 4,287   4,287   4,633
Derivative, Fair Value, Net 110   110   90
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Derivative Asset, Fair Value, Gross Asset 110   110   90
Derivative Liability, Fair Value, Gross Liability 0   0   0
Other Policyholder Funds and Benefits Payable [Member]          
Net Realized Capital Gains (Losses) [Line Items]          
Derivative, Notional Amount 16,411   16,411   17,958
Derivative, Fair Value, Net (138)   (138)   (165)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]          
Derivative Asset, Fair Value, Gross Asset 0   0   0
Derivative Liability, Fair Value, Gross Liability $ 138   $ 138   $ 165
[1] Unrealized losses exclude the change in fair value of bifurcated embedded derivative features of certain securities, for which changes in fair value are recorded in net realized capital gains (losses).
[2] As of June 30, 2015 and December 31, 2014, excludes equity securities, FVO which are included in equity securities, AFS on the Condensed Consolidated Balance Sheets.
[3] Primarily consists of changes in the value of non-qualifying derivatives, transactional foreign currency revaluation gains (losses) on yen denominated fixed payout annuity liabilities and gains (losses) on non-qualifying derivatives used to hedge the foreign currency exposure of the liabilities. For the three months ended June 30, 2015 and 2014, gains (losses) from transactional foreign currency revaluation of the yen denominated fixed payout annuity liabilities were $16 and $(18), respectively. For the six months ended June 30, 2015 and 2014, gains (losses) from transactional foreign currency revaluation of the yen denominated fixed payout annuity liabilities were $16 and $(46), respectively. For the three months ended June 30, 2015 and 2014, gains (losses) on instruments used to hedge the foreign currency exposure on the fixed payout annuities were $(17) and $13, respectively. For the six months ended June 30, 2015 and 2014, gains (losses) on instruments used to hedge the foreign currency exposure on the fixed payout annuities were $(31) and $28, respectively.
[4] {F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOmZmNzlhNDA4NzJjNDRiYmViOGEzY2QzY2EyODJjMzM5fFRleHRTZWxlY3Rpb246NTM3QjVCQTcyMDM1RDI0MzYwMUUyOUE4MzdDQzkwRTIM}
[5] he associated liability adjustment for changes in foreign exchange spot rates through realized capital gains of $16 and $(18) for the three months ended June 30, 2015 and 2014, respectively