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INVESTMENTS (Details - Amortized cost or cost and fair value of Available for sale securities) - USD ($)
$ in Millions
Jun. 30, 2017
Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total $ 223,901 $ 233,938
Available for sale securities, Gross Unrealized Gains 14,629 12,817
Available for sale securities, Gross Unrealized Losses (1,636) (3,140)
Available-for-sale Securities 236,894 243,615
AOCI- OTTI    
Schedule of Available-for-sale Securities [Line Items]    
Total, Other-Than-Temporary Impairments in AOCI 1,604 1,265
Bonds available for sale    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 222,720 232,241
Available for sale securities, Gross Unrealized Gains 14,201 12,421
Available for sale securities, Gross Unrealized Losses (1,632) (3,125)
Available-for-sale Securities 235,289 241,537
Other details of available for sale securities    
Available for sale securities not rated or rated below investment grade 31,600 33,600
Bonds available for sale | AOCI- OTTI    
Schedule of Available-for-sale Securities [Line Items]    
Total, Other-Than-Temporary Impairments in AOCI 1,604 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 2,225 1,870
Available for sale securities, Gross Unrealized Gains 153 148
Available for sale securities, Gross Unrealized Losses (22) (26)
Available-for-sale Securities 2,356 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 18,625 24,025
Available for sale securities, Gross Unrealized Gains 1,167 1,001
Available for sale securities, Gross Unrealized Losses (70) (254)
Available-for-sale Securities 19,722 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 14,499 14,018
Available for sale securities, Gross Unrealized Gains 757 773
Available for sale securities, Gross Unrealized Losses (117) (256)
Available-for-sale Securities 15,139 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 124,719 126,648
Available for sale securities, Gross Unrealized Gains 8,319 7,271
Available for sale securities, Gross Unrealized Losses (988) (1,739)
Available-for-sale Securities 132,050 132,180
Bonds available for sale | Corporate debt | AOCI- OTTI    
Schedule of Available-for-sale Securities [Line Items]    
Total, Other-Than-Temporary Impairments in AOCI (5) (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 62,652 65,680
Available for sale securities, Gross Unrealized Gains 3,805 3,228
Available for sale securities, Gross Unrealized Losses (435) (850)
Available-for-sale Securities 66,022 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 1,609 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 33,336 35,311
Available for sale securities, Gross Unrealized Gains 2,992 2,541
Available for sale securities, Gross Unrealized Losses (262) (478)
Available-for-sale Securities 36,066 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 1,504 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 12,830 14,054
Available for sale securities, Gross Unrealized Gains 435 409
Available for sale securities, Gross Unrealized Losses (102) (192)
Available-for-sale Securities 13,163 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 46 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 16,486 16,315
Available for sale securities, Gross Unrealized Gains 378 278
Available for sale securities, Gross Unrealized Losses (71) (180)
Available-for-sale Securities 16,793 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 59 39
Equity securities available for sale    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 1,181 1,697
Available for sale securities, Gross Unrealized Gains 428 396
Available for sale securities, Gross Unrealized Losses (4) (15)
Available-for-sale Securities 1,605 2,078
Equity securities available for sale | Common Stock    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 616 708
Available for sale securities, Gross Unrealized Gains 372 369
Available for sale securities, Gross Unrealized Losses (4) (12)
Available-for-sale Securities 984 1,065
Equity securities available for sale | Preferred Stock    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 504 748
Available for sale securities, Gross Unrealized Gains 44 4
Available for sale securities, Gross Unrealized Losses 0 0
Available-for-sale Securities 548 752
Equity securities available for sale | Mutual Funds    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 61 241
Available for sale securities, Gross Unrealized Gains 12 23
Available for sale securities, Gross Unrealized Losses 0 (3)
Available-for-sale Securities $ 73 $ 261