INVESTMENTS (Details - Amortized cost or cost and fair value of Available for sale securities) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost, Total	$ 233,230
Bonds available for sale
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost, Total	233,230	$ 225,780
Available for sale securities, Gross Unrealized Gains	18,671	8,419
Available for sale securities, Gross Unrealized Losses	(815)	(4,808)
Available-for-sale Securities	251,086	229,391
Other details of available for sale securities
Available for sale securities not rated or rated below investment grade	27,800	28,800
Bonds available for sale | AOCI- OTTI
Schedule of Available-for-sale Securities [Line Items]
Total, Other-Than-Temporary Impairments in AOCI	1,186	1,211
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	5,108	3,170
Available for sale securities, Gross Unrealized Gains	316	132
Available for sale securities, Gross Unrealized Losses	(44)	(42)
Available-for-sale Securities	5,380	3,260
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	13,960	15,421
Available for sale securities, Gross Unrealized Gains	1,390	701
Available for sale securities, Gross Unrealized Losses	(32)	(121)
Available-for-sale Securities	15,318	16,001
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	4
Bonds available for sale | Non-U.S. governments
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost, Total	14,042	14,376
Available for sale securities, Gross Unrealized Gains	884	451
Available for sale securities, Gross Unrealized Losses	(57)	(302)
Available-for-sale Securities	14,869	14,525
Bonds available for sale | Non-U.S. governments | AOCI- OTTI
Schedule of Available-for-sale Securities [Line Items]
Total, Other-Than-Temporary Impairments in AOCI	(18)	0
Bonds available for sale | Corporate debt
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost, Total	138,046	130,436
Available for sale securities, Gross Unrealized Gains	12,090	3,911
Available for sale securities, Gross Unrealized Losses	(500)	(3,647)
Available-for-sale Securities	149,636	130,700
Bonds available for sale | Corporate debt | AOCI- OTTI
Schedule of Available-for-sale Securities [Line Items]
Total, Other-Than-Temporary Impairments in AOCI	7	4
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	62,074	62,377
Available for sale securities, Gross Unrealized Gains	3,991	3,224
Available for sale securities, Gross Unrealized Losses	(182)	(696)
Available-for-sale Securities	65,883	64,905
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	1,197	1,203
Bonds available for sale | Residential mortgage-backed securities (RMBS)
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost, Total	29,802	31,940
Available for sale securities, Gross Unrealized Gains	3,067	2,754
Available for sale securities, Gross Unrealized Losses	(64)	(317)
Available-for-sale Securities	32,805	34,377
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	1,149	1,155
Bonds available for sale | Commercial mortgage-backed securities (CMBS)
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost, Total	13,879	12,673
Available for sale securities, Gross Unrealized Gains	576	242
Available for sale securities, Gross Unrealized Losses	(25)	(214)
Available-for-sale Securities	14,430	12,701
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	34	31
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	18,393	17,764
Available for sale securities, Gross Unrealized Gains	348	228
Available for sale securities, Gross Unrealized Losses	(93)	(165)
Available-for-sale Securities	18,648	17,827
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	$ 14	$ 17