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INVESTMENTS (Details - Amortized cost or cost and fair value of Available for sale securities) - USD ($)
$ in Millions
Mar. 31, 2017
Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total $ 222,233 $ 233,938
Available for sale securities, Gross Unrealized Gains 13,009 12,817
Available for sale securities, Gross Unrealized Losses (2,445) (3,140)
Available-for-sale Securities 232,797 243,615
AOCI- OTTI    
Schedule of Available-for-sale Securities [Line Items]    
Total, Other-Than-Temporary Impairments in AOCI 1,407 1,265
Bonds available for sale    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 220,629 232,241
Available for sale securities, Gross Unrealized Gains 12,508 12,421
Available for sale securities, Gross Unrealized Losses (2,439) (3,125)
Available-for-sale Securities 230,698 241,537
Other details of available for sale securities    
Available for sale securities not rated or rated below investment grade 32,800 33,600
Bonds available for sale | AOCI- OTTI    
Schedule of Available-for-sale Securities [Line Items]    
Total, Other-Than-Temporary Impairments in AOCI 1,407 1,265
Bonds available for sale | U.S. government and government sponsored entities    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 2,236 1,870
Available for sale securities, Gross Unrealized Gains 149 148
Available for sale securities, Gross Unrealized Losses (23) (26)
Available-for-sale Securities 2,362 1,992
Bonds available for sale | U.S. government and government sponsored entities | AOCI- OTTI    
Schedule of Available-for-sale Securities [Line Items]    
Total, Other-Than-Temporary Impairments in AOCI 0 0
Bonds available for sale | Obligations of states, municipalities and political subdivisions    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 18,877 24,025
Available for sale securities, Gross Unrealized Gains 967 1,001
Available for sale securities, Gross Unrealized Losses (141) (254)
Available-for-sale Securities 19,703 24,772
Bonds available for sale | Obligations of states, municipalities and political subdivisions | AOCI- OTTI    
Schedule of Available-for-sale Securities [Line Items]    
Total, Other-Than-Temporary Impairments in AOCI 0 0
Bonds available for sale | Non-U.S. government    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 13,688 14,018
Available for sale securities, Gross Unrealized Gains 757 773
Available for sale securities, Gross Unrealized Losses (138) (256)
Available-for-sale Securities 14,307 14,535
Bonds available for sale | Non-U.S. government | AOCI- OTTI    
Schedule of Available-for-sale Securities [Line Items]    
Total, Other-Than-Temporary Impairments in AOCI 0 0
Bonds available for sale | Corporate debt    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 123,469 126,648
Available for sale securities, Gross Unrealized Gains 7,290 7,271
Available for sale securities, Gross Unrealized Losses (1,429) (1,739)
Available-for-sale Securities 129,330 132,180
Bonds available for sale | Corporate debt | AOCI- OTTI    
Schedule of Available-for-sale Securities [Line Items]    
Total, Other-Than-Temporary Impairments in AOCI 2 (31)
Bonds available for sale | Mortgage-backed, asset-backed and collateralized    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 62,359 65,680
Available for sale securities, Gross Unrealized Gains 3,345 3,228
Available for sale securities, Gross Unrealized Losses (708) (850)
Available-for-sale Securities 64,996 68,058
Bonds available for sale | Mortgage-backed, asset-backed and collateralized | AOCI- OTTI    
Schedule of Available-for-sale Securities [Line Items]    
Total, Other-Than-Temporary Impairments in AOCI 1,405 1,296
Bonds available for sale | Residential mortgage-backed securities (RMBS)    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 33,042 35,311
Available for sale securities, Gross Unrealized Gains 2,648 2,541
Available for sale securities, Gross Unrealized Losses (403) (478)
Available-for-sale Securities 35,287 37,374
Bonds available for sale | Residential mortgage-backed securities (RMBS) | AOCI- OTTI    
Schedule of Available-for-sale Securities [Line Items]    
Total, Other-Than-Temporary Impairments in AOCI 1,317 1,212
Bonds available for sale | Commercial mortgage-backed securities (CMBS)    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 13,374 14,054
Available for sale securities, Gross Unrealized Gains 392 409
Available for sale securities, Gross Unrealized Losses (157) (192)
Available-for-sale Securities 13,609 14,271
Bonds available for sale | Commercial mortgage-backed securities (CMBS) | AOCI- OTTI    
Schedule of Available-for-sale Securities [Line Items]    
Total, Other-Than-Temporary Impairments in AOCI 53 45
Bonds available for sale | Collateralized Debt Obligations/Asset-Backed Securities (CDO/ABS)    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 15,943 16,315
Available for sale securities, Gross Unrealized Gains 305 278
Available for sale securities, Gross Unrealized Losses (148) (180)
Available-for-sale Securities 16,100 16,413
Bonds available for sale | Collateralized Debt Obligations/Asset-Backed Securities (CDO/ABS) | AOCI- OTTI    
Schedule of Available-for-sale Securities [Line Items]    
Total, Other-Than-Temporary Impairments in AOCI 35 39
Equity securities available for sale    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 1,604 1,697
Available for sale securities, Gross Unrealized Gains 501 396
Available for sale securities, Gross Unrealized Losses (6) (15)
Available-for-sale Securities 2,099 2,078
Equity securities available for sale | Common Stock    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 605 708
Available for sale securities, Gross Unrealized Gains 386 369
Available for sale securities, Gross Unrealized Losses (5) (12)
Available-for-sale Securities 986 1,065
Equity securities available for sale | Preferred Stock    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 749 748
Available for sale securities, Gross Unrealized Gains 76 4
Available for sale securities, Gross Unrealized Losses 0 0
Available-for-sale Securities 825 752
Equity securities available for sale | Mutual Funds    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 250 241
Available for sale securities, Gross Unrealized Gains 39 23
Available for sale securities, Gross Unrealized Losses (1) (3)
Available-for-sale Securities $ 288 $ 261