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INVESTMENTS (Details - Amortized cost or cost and fair value of Available for sale securities) - Bonds available for sale - USD ($)
$ in Millions
Sep. 30, 2019
Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total $ 233,345 $ 225,780
Available for sale securities, Gross Unrealized Gains 20,660 8,419
Available for sale securities, Gross Unrealized Losses (784) (4,808)
Available-for-sale Securities 253,221 229,391
Other details of available for sale securities    
Available for sale securities not rated or rated below investment grade 28,000 28,800
AOCI- OTTI    
Schedule of Available-for-sale Securities [Line Items]    
Total, Other-Than-Temporary Impairments in AOCI 1,282 1,211
U.S. government and government sponsored entities    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 4,727 3,170
Available for sale securities, Gross Unrealized Gains 501 132
Available for sale securities, Gross Unrealized Losses (1) (42)
Available-for-sale Securities 5,227 3,260
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
Obligations of states, municipalities and political subdivisions    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 14,122 15,421
Available for sale securities, Gross Unrealized Gains 1,640 701
Available for sale securities, Gross Unrealized Losses (17) (121)
Available-for-sale Securities 15,745 16,001
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 4
Non-U.S. governments    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 14,456 14,376
Available for sale securities, Gross Unrealized Gains 999 451
Available for sale securities, Gross Unrealized Losses (79) (302)
Available-for-sale Securities 15,376 14,525
Non-U.S. governments | AOCI- OTTI    
Schedule of Available-for-sale Securities [Line Items]    
Total, Other-Than-Temporary Impairments in AOCI 0 0
Corporate debt    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 138,950 130,436
Available for sale securities, Gross Unrealized Gains 12,956 3,911
Available for sale securities, Gross Unrealized Losses (534) (3,647)
Available-for-sale Securities 151,372 130,700
Corporate debt | AOCI- OTTI    
Schedule of Available-for-sale Securities [Line Items]    
Total, Other-Than-Temporary Impairments in AOCI 9 4
Mortgage-backed, asset-backed and collateralized    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 61,090 62,377
Available for sale securities, Gross Unrealized Gains 4,564 3,224
Available for sale securities, Gross Unrealized Losses (153) (696)
Available-for-sale Securities 65,501 64,905
Mortgage-backed, asset-backed and collateralized | AOCI- OTTI    
Schedule of Available-for-sale Securities [Line Items]    
Total, Other-Than-Temporary Impairments in AOCI 1,273 1,203
Residential mortgage-backed securities (RMBS)    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 29,513 31,940
Available for sale securities, Gross Unrealized Gains 3,344 2,754
Available for sale securities, Gross Unrealized Losses (62) (317)
Available-for-sale Securities 32,795 34,377
Residential mortgage-backed securities (RMBS) | AOCI- OTTI    
Schedule of Available-for-sale Securities [Line Items]    
Total, Other-Than-Temporary Impairments in AOCI 1,222 1,155
Commercial mortgage-backed securities (CMBS)    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 13,577 12,673
Available for sale securities, Gross Unrealized Gains 771 242
Available for sale securities, Gross Unrealized Losses (12) (214)
Available-for-sale Securities 14,336 12,701
Commercial mortgage-backed securities (CMBS) | AOCI- OTTI    
Schedule of Available-for-sale Securities [Line Items]    
Total, Other-Than-Temporary Impairments in AOCI 34 31
Collateralized Debt Obligations/Asset-Backed Securities (CDO/ABS)    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale securities, Amortized Cost, Total 18,000 17,764
Available for sale securities, Gross Unrealized Gains 449 228
Available for sale securities, Gross Unrealized Losses (79) (165)
Available-for-sale Securities 18,370 17,827
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 $ 17 $ 17