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FAIR VALUE MEASUREMENTS (Details - Fair Value Measurements on a Recurring Basis) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Sep. 30, 2012
Sep. 30, 2010
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     $ 255,066   $ 259,859
Other bond securities, at fair value (See Note 5)     16,598   19,712
Equity securities available for sale     4,755   4,395
Other equity securities     1,323   1,049
Other invested assets     9,389   9,394
Derivative assets, at fair value     1,256   1,604
Short-term investments, portion measured at fair value     2,281   1,684
Separate account assets, at fair value     82,135   80,036
Fair Value, Liabilities Measured on Recurring Basis          
Policyholder contract deposits, portion measured at fair value     1,268   1,561
Other policyholder funds     4,378   4,669
Derivative liabilities, at fair value     1,546   2,273
Long-term debt, portion measured at fair value     4,269   5,466
Other liabilities     284   350
Recurring Basis          
Fair Value, Liabilities Measured on Recurring Basis          
Assets transferred from Level 1 to Level 2     180    
Assets transferred from Level 2 to Level 1     0 $ 0  
Recurring Basis | U.S. government and government sponsored entities          
Fair Value, Liabilities Measured on Recurring Basis          
Assets transferred from Level 1 to Level 2 $ 65 $ 0   103  
Recurring Basis | Non-U.S. government          
Fair Value, Liabilities Measured on Recurring Basis          
Assets transferred from Level 1 to Level 2 $ 190 $ 236 262 $ 298  
Recurring Basis | Level 1          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     649   1,064
Other bond securities, at fair value (See Note 5)     176   130
Equity securities available for sale     4,745   4,389
Other equity securities     1,301   1,024
Mortgage and other loans receivable     0    
Other invested assets     2   2
Derivative assets, at fair value     90   100
Short-term investments, portion measured at fair value     1,036   584
Separate account assets, at fair value     76,833   73,939
Other assets     0    
Fair value assets measured on recurring basis, total     84,832   81,232
Fair Value, Liabilities Measured on Recurring Basis          
Policyholder contract deposits, portion measured at fair value     0    
Other policyholder funds     0    
Derivative liabilities, at fair value     0    
Long-term debt, portion measured at fair value     0    
Other liabilities     120   34
Fair value liabilities measured on recurring basis, total     120   34
Recurring Basis | Level 1 | Interest rate contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     6   2
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     0    
Recurring Basis | Level 1 | Foreign exchange contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     0    
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     0    
Recurring Basis | Level 1 | Equity contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     84   98
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     0    
Recurring Basis | Level 1 | Commodity contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     0    
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     0    
Recurring Basis | Level 1 | Credit contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     0    
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     0    
Recurring Basis | Level 1 | Other contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     0    
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     0    
Recurring Basis | Level 1 | Counterparty netting and cash collateral          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     0    
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     0    
Recurring Basis | Level 1 | U.S. government and government sponsored entities          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     1   322
Other bond securities, at fair value (See Note 5)     176   130
Recurring Basis | Level 1 | Obligations of states, municipalities and political subdivisions          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     0    
Other bond securities, at fair value (See Note 5)     0    
Recurring Basis | Level 1 | Non-U.S. government          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     648   742
Other bond securities, at fair value (See Note 5)     0    
Recurring Basis | Level 1 | Corporate debt          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     0    
Other bond securities, at fair value (See Note 5)     0    
Recurring Basis | Level 1 | Residential mortgage backed securities (RMBS)          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     0    
Other bond securities, at fair value (See Note 5)     0    
Recurring Basis | Level 1 | Commercial mortgage-backed securities (CMBS)          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     0    
Other bond securities, at fair value (See Note 5)     0    
Recurring Basis | Level 1 | Collateralized Debt Obligations/Asset Backed Securities (CDO/ABS)          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     0    
Other bond securities, at fair value (See Note 5)     0    
Recurring Basis | Level 1 | Common Stock          
Fair Value, Assets Measured on Recurring Basis          
Equity securities available for sale     3,843   3,626
Recurring Basis | Level 1 | Preferred Stock          
Fair Value, Assets Measured on Recurring Basis          
Equity securities available for sale     25   25
Recurring Basis | Level 1 | Mutual Funds          
Fair Value, Assets Measured on Recurring Basis          
Equity securities available for sale     877   738
Recurring Basis | Level 2          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     224,241   229,112
Other bond securities, at fair value (See Note 5)     7,420   10,659
Equity securities available for sale     10   5
Other equity securities     0   25
Mortgage and other loans receivable     0    
Other invested assets     4,312   3,742
Derivative assets, at fair value     3,877   4,626
Short-term investments, portion measured at fair value     1,245   1,100
Separate account assets, at fair value     5,302   6,097
Other assets     0   0
Fair value assets measured on recurring basis, total     246,407   255,366
Fair Value, Liabilities Measured on Recurring Basis          
Policyholder contract deposits, portion measured at fair value     36   52
Other policyholder funds     8   8
Derivative liabilities, at fair value     3,734   4,633
Long-term debt, portion measured at fair value     4,076   5,253
Other liabilities     164   316
Fair value liabilities measured on recurring basis, total     8,018   10,262
Recurring Basis | Level 2 | Interest rate contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     3,192   3,729
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     2,389   3,047
Recurring Basis | Level 2 | Foreign exchange contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     675   839
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     1,232   1,482
Recurring Basis | Level 2 | Equity contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     10   58
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     105   98
Recurring Basis | Level 2 | Commodity contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     0    
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     6   6
Recurring Basis | Level 2 | Credit contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     0    
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     0    
Recurring Basis | Level 2 | Other contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     0   0
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     2   0
Recurring Basis | Level 2 | Counterparty netting and cash collateral          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     0    
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     0    
Recurring Basis | Level 2 | U.S. government and government sponsored entities          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     2,513   2,670
Other bond securities, at fair value (See Note 5)     3,639   5,368
Recurring Basis | Level 2 | Obligations of states, municipalities and political subdivisions          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     25,482   25,500
Other bond securities, at fair value (See Note 5)     75   122
Recurring Basis | Level 2 | Non-U.S. government          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     18,468   20,323
Other bond securities, at fair value (See Note 5)     2   2
Recurring Basis | Level 2 | Corporate debt          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     138,745   142,550
Other bond securities, at fair value (See Note 5)     436   719
Recurring Basis | Level 2 | Residential mortgage backed securities (RMBS)          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     19,151   20,715
Other bond securities, at fair value (See Note 5)     873   989
Recurring Basis | Level 2 | Commercial mortgage-backed securities (CMBS)          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     10,845   10,189
Other bond securities, at fair value (See Note 5)     644   708
Recurring Basis | Level 2 | Collateralized Debt Obligations/Asset Backed Securities (CDO/ABS)          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     9,037   7,165
Other bond securities, at fair value (See Note 5)     1,751   2,751
Recurring Basis | Level 2 | Common Stock          
Fair Value, Assets Measured on Recurring Basis          
Equity securities available for sale     8   2
Recurring Basis | Level 2 | Preferred Stock          
Fair Value, Assets Measured on Recurring Basis          
Equity securities available for sale     0   0
Recurring Basis | Level 2 | Mutual Funds          
Fair Value, Assets Measured on Recurring Basis          
Equity securities available for sale     2   3
Recurring Basis | Level 3          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     30,176   29,683
Other bond securities, at fair value (See Note 5)     9,002   8,923
Equity securities available for sale     0   1
Other equity securities     22    
Mortgage and other loans receivable     6   6
Other invested assets     5,075   5,650
Derivative assets, at fair value     109   99
Short-term investments, portion measured at fair value     0    
Separate account assets, at fair value     0    
Other assets     0    
Fair value assets measured on recurring basis, total     44,390   44,362
Fair Value, Liabilities Measured on Recurring Basis          
Policyholder contract deposits, portion measured at fair value     1,232   1,509
Other policyholder funds     0    
Derivative liabilities, at fair value     682   1,171
Long-term debt, portion measured at fair value     193   213
Other liabilities     0    
Fair value liabilities measured on recurring basis, total     2,107   2,893
Recurring Basis | Level 3 | Interest rate contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     11   12
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     73   86
Recurring Basis | Level 3 | Foreign exchange contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     0   1
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     7   9
Recurring Basis | Level 3 | Equity contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     64   51
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     1   4
Recurring Basis | Level 3 | Commodity contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     0   0
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     0    
Recurring Basis | Level 3 | Credit contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     4   4
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     555   982
Recurring Basis | Level 3 | Other contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     30   31
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     46   90
Recurring Basis | Level 3 | Counterparty netting and cash collateral          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     0    
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     0    
Recurring Basis | Level 3 | U.S. government and government sponsored entities          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     0    
Other bond securities, at fair value (See Note 5)     0    
Recurring Basis | Level 3 | Obligations of states, municipalities and political subdivisions          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     2,180   2,159
Other bond securities, at fair value (See Note 5)     0    
Recurring Basis | Level 3 | Non-U.S. government          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     33   30
Other bond securities, at fair value (See Note 5)     0    
Recurring Basis | Level 3 | Corporate debt          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     2,118   1,883
Other bond securities, at fair value (See Note 5)     16    
Recurring Basis | Level 3 | Residential mortgage backed securities (RMBS)          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     17,097   16,805
Other bond securities, at fair value (See Note 5)     1,337   1,105
Recurring Basis | Level 3 | Commercial mortgage-backed securities (CMBS)          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     2,677   2,696
Other bond securities, at fair value (See Note 5)     223   369
Recurring Basis | Level 3 | Collateralized Debt Obligations/Asset Backed Securities (CDO/ABS)          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     6,071   6,110
Other bond securities, at fair value (See Note 5)     7,426   7,449
Recurring Basis | Level 3 | Common Stock          
Fair Value, Assets Measured on Recurring Basis          
Equity securities available for sale     0   1
Recurring Basis | Level 3 | Preferred Stock          
Fair Value, Assets Measured on Recurring Basis          
Equity securities available for sale     0    
Recurring Basis | Level 3 | Mutual Funds          
Fair Value, Assets Measured on Recurring Basis          
Equity securities available for sale     0    
Recurring Basis | Counterparty Netting          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     0    
Other bond securities, at fair value (See Note 5)     0    
Equity securities available for sale     0    
Other equity securities     0    
Mortgage and other loans receivable     0    
Other invested assets     0    
Derivative assets, at fair value     (1,594)   (2,102)
Short-term investments, portion measured at fair value     0    
Separate account assets, at fair value     0    
Other assets     0    
Fair value assets measured on recurring basis, total     (1,594)   (2,102)
Fair Value, Liabilities Measured on Recurring Basis          
Policyholder contract deposits, portion measured at fair value     0    
Derivative liabilities, at fair value     (1,594)   (2,102)
Long-term debt, portion measured at fair value     0    
Other liabilities     0    
Fair value liabilities measured on recurring basis, total     (1,594)   (2,102)
Recurring Basis | Counterparty Netting | Interest rate contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     0    
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     0    
Recurring Basis | Counterparty Netting | Foreign exchange contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     0    
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     0    
Recurring Basis | Counterparty Netting | Equity contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     0    
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     0    
Recurring Basis | Counterparty Netting | Commodity contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     0    
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     0    
Recurring Basis | Counterparty Netting | Credit contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     0    
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     0    
Recurring Basis | Counterparty Netting | Other contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     0    
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     0    
Recurring Basis | Counterparty Netting | Counterparty netting and cash collateral          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     (1,594)   (2,102)
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     (1,594)   (2,102)
Recurring Basis | Counterparty Netting | U.S. government and government sponsored entities          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     0    
Other bond securities, at fair value (See Note 5)     0    
Recurring Basis | Counterparty Netting | Obligations of states, municipalities and political subdivisions          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     0    
Other bond securities, at fair value (See Note 5)     0    
Recurring Basis | Counterparty Netting | Non-U.S. government          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     0    
Other bond securities, at fair value (See Note 5)     0    
Recurring Basis | Counterparty Netting | Corporate debt          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     0    
Other bond securities, at fair value (See Note 5)     0    
Recurring Basis | Counterparty Netting | Residential mortgage backed securities (RMBS)          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     0    
Other bond securities, at fair value (See Note 5)     0    
Recurring Basis | Counterparty Netting | Commercial mortgage-backed securities (CMBS)          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     0    
Other bond securities, at fair value (See Note 5)     0    
Recurring Basis | Counterparty Netting | Collateralized Debt Obligations/Asset Backed Securities (CDO/ABS)          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     0    
Other bond securities, at fair value (See Note 5)     0    
Recurring Basis | Counterparty Netting | Common Stock          
Fair Value, Assets Measured on Recurring Basis          
Equity securities available for sale     0    
Recurring Basis | Counterparty Netting | Preferred Stock          
Fair Value, Assets Measured on Recurring Basis          
Equity securities available for sale     0    
Recurring Basis | Counterparty Netting | Mutual Funds          
Fair Value, Assets Measured on Recurring Basis          
Equity securities available for sale     0    
Recurring Basis | Cash Collateral          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     0    
Other bond securities, at fair value (See Note 5)     0    
Equity securities available for sale     0    
Other equity securities     0    
Mortgage and other loans receivable     0    
Other invested assets     0    
Derivative assets, at fair value     (1,226)   (1,119)
Short-term investments, portion measured at fair value     0    
Separate account assets, at fair value     0    
Other assets     0    
Fair value assets measured on recurring basis, total     (1,226)   (1,119)
Fair Value, Liabilities Measured on Recurring Basis          
Policyholder contract deposits, portion measured at fair value     0    
Derivative liabilities, at fair value     (1,276)   (1,429)
Long-term debt, portion measured at fair value     0    
Other liabilities     0    
Fair value liabilities measured on recurring basis, total     (1,276)   (1,429)
Recurring Basis | Cash Collateral | Interest rate contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     0    
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     0    
Recurring Basis | Cash Collateral | Foreign exchange contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     0    
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     0    
Recurring Basis | Cash Collateral | Equity contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     0    
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     0    
Recurring Basis | Cash Collateral | Commodity contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     0    
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     0    
Recurring Basis | Cash Collateral | Credit contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     0    
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     0    
Recurring Basis | Cash Collateral | Other contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     0    
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     0    
Recurring Basis | Cash Collateral | Counterparty netting and cash collateral          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     (1,226)   (1,119)
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     (1,276)   (1,429)
Recurring Basis | Cash Collateral | U.S. government and government sponsored entities          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     0    
Other bond securities, at fair value (See Note 5)     0    
Recurring Basis | Cash Collateral | Obligations of states, municipalities and political subdivisions          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     0    
Other bond securities, at fair value (See Note 5)     0    
Recurring Basis | Cash Collateral | Non-U.S. government          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     0    
Other bond securities, at fair value (See Note 5)     0    
Recurring Basis | Cash Collateral | Corporate debt          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     0    
Other bond securities, at fair value (See Note 5)     0    
Recurring Basis | Cash Collateral | Residential mortgage backed securities (RMBS)          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     0    
Other bond securities, at fair value (See Note 5)     0    
Recurring Basis | Cash Collateral | Commercial mortgage-backed securities (CMBS)          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     0    
Other bond securities, at fair value (See Note 5)     0    
Recurring Basis | Cash Collateral | Collateralized Debt Obligations/Asset Backed Securities (CDO/ABS)          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     0    
Other bond securities, at fair value (See Note 5)     0    
Recurring Basis | Cash Collateral | Common Stock          
Fair Value, Assets Measured on Recurring Basis          
Equity securities available for sale     0    
Recurring Basis | Cash Collateral | Preferred Stock          
Fair Value, Assets Measured on Recurring Basis          
Equity securities available for sale     0    
Recurring Basis | Cash Collateral | Mutual Funds          
Fair Value, Assets Measured on Recurring Basis          
Equity securities available for sale     0    
Recurring Basis | Total Fair Value          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     255,066   259,859
Other bond securities, at fair value (See Note 5)     16,598   19,712
Equity securities available for sale     4,755   4,395
Other equity securities     1,323   1,049
Mortgage and other loans receivable     6   6
Other invested assets     9,389   9,394
Derivative assets, at fair value     1,256   1,604
Short-term investments, portion measured at fair value     2,281   1,684
Separate account assets, at fair value     82,135   80,036
Other assets     0   0
Fair value assets measured on recurring basis, total     372,809   377,739
Fair Value, Liabilities Measured on Recurring Basis          
Policyholder contract deposits, portion measured at fair value     1,268   1,561
Other policyholder funds     8   8
Derivative liabilities, at fair value     1,546   2,273
Long-term debt, portion measured at fair value     4,269   5,466
Other liabilities     284   350
Fair value liabilities measured on recurring basis, total     7,375   9,658
Recurring Basis | Total Fair Value | Interest rate contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     3,209   3,743
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     2,462   3,133
Recurring Basis | Total Fair Value | Foreign exchange contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     675   840
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     1,239   1,491
Recurring Basis | Total Fair Value | Equity contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     158   207
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     106   102
Recurring Basis | Total Fair Value | Commodity contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     0   0
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     6   6
Recurring Basis | Total Fair Value | Credit contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     4   4
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     555   982
Recurring Basis | Total Fair Value | Other contracts          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     30   31
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     48   90
Recurring Basis | Total Fair Value | Counterparty netting and cash collateral          
Fair Value, Assets Measured on Recurring Basis          
Derivative assets, at fair value     (2,820)   (3,221)
Fair Value, Liabilities Measured on Recurring Basis          
Derivative liabilities, at fair value     (2,870)   (3,531)
Recurring Basis | Total Fair Value | U.S. government and government sponsored entities          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     2,514   2,992
Other bond securities, at fair value (See Note 5)     3,815   5,498
Recurring Basis | Total Fair Value | Obligations of states, municipalities and political subdivisions          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     27,662   27,659
Other bond securities, at fair value (See Note 5)     75   122
Recurring Basis | Total Fair Value | Non-U.S. government          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     19,149   21,095
Other bond securities, at fair value (See Note 5)     2   2
Recurring Basis | Total Fair Value | Corporate debt          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     140,863   144,433
Other bond securities, at fair value (See Note 5)     452   719
Recurring Basis | Total Fair Value | Residential mortgage backed securities (RMBS)          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     36,248   37,520
Other bond securities, at fair value (See Note 5)     2,210   2,094
Recurring Basis | Total Fair Value | Commercial mortgage-backed securities (CMBS)          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     13,522   12,885
Other bond securities, at fair value (See Note 5)     867   1,077
Recurring Basis | Total Fair Value | Collateralized Debt Obligations/Asset Backed Securities (CDO/ABS)          
Fair Value, Assets Measured on Recurring Basis          
Bonds available for sale     15,108   13,275
Other bond securities, at fair value (See Note 5)     9,177   10,200
Recurring Basis | Total Fair Value | Common Stock          
Fair Value, Assets Measured on Recurring Basis          
Equity securities available for sale     3,851   3,629
Recurring Basis | Total Fair Value | Preferred Stock          
Fair Value, Assets Measured on Recurring Basis          
Equity securities available for sale     25   25
Recurring Basis | Total Fair Value | Mutual Funds          
Fair Value, Assets Measured on Recurring Basis          
Equity securities available for sale     $ 879   $ 741