INVESTMENTS (Details - Amortized cost or cost and fair value of Available for sale securities) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost, Total	$ 225,780	$ 226,766
Available for sale securities, Gross Unrealized Gains	8,419	15,315
Available for sale securities, Gross Unrealized Losses	(4,808)	(1,381)
Available-for-sale Securities	229,391	240,700
AOCI- OTTI
Schedule of Available-for-sale Securities [Line Items]
Total, Other-Than-Temporary Impairments in AOCI	1,211	1,656
Bonds available for sale
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost, Total	225,780	225,461
Available for sale securities, Gross Unrealized Gains	8,419	14,891
Available for sale securities, Gross Unrealized Losses	(4,808)	(1,360)
Available-for-sale Securities	229,391	238,992
Other details of available for sale securities
Available for sale securities not rated or rated below investment grade	28,800	31,500
Bonds available for sale | AOCI- OTTI
Schedule of Available-for-sale Securities [Line Items]
Total, Other-Than-Temporary Impairments in AOCI	1,211	1,656
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	3,170	2,532
Available for sale securities, Gross Unrealized Gains	132	160
Available for sale securities, Gross Unrealized Losses	(42)	(36)
Available-for-sale Securities	3,260	2,656
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	15,421	17,377
Available for sale securities, Gross Unrealized Gains	701	1,297
Available for sale securities, Gross Unrealized Losses	(121)	(30)
Available-for-sale Securities	16,001	18,644
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	4	0
Bonds available for sale | Non-U.S. governments
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost, Total	14,376	15,059
Available for sale securities, Gross Unrealized Gains	451	717
Available for sale securities, Gross Unrealized Losses	(302)	(117)
Available-for-sale Securities	14,525	15,659
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	0	0
Bonds available for sale | Corporate debt
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost, Total	130,436	126,310
Available for sale securities, Gross Unrealized Gains	3,911	8,666
Available for sale securities, Gross Unrealized Losses	(3,647)	(800)
Available-for-sale Securities	130,700	134,176
Bonds available for sale | Corporate debt | AOCI- OTTI
Schedule of Available-for-sale Securities [Line Items]
Total, Other-Than-Temporary Impairments in AOCI	4	17
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	62,377	64,183
Available for sale securities, Gross Unrealized Gains	3,224	4,051
Available for sale securities, Gross Unrealized Losses	(696)	(377)
Available-for-sale Securities	64,905	67,857
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	1,203	1,639
Bonds available for sale | Residential mortgage-backed securities (RMBS)
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost, Total	31,940	34,181
Available for sale securities, Gross Unrealized Gains	2,754	3,273
Available for sale securities, Gross Unrealized Losses	(317)	(220)
Available-for-sale Securities	34,377	37,234
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	1,155	1,568
Bonds available for sale | Commercial mortgage-backed securities (CMBS)
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost, Total	12,673	13,538
Available for sale securities, Gross Unrealized Gains	242	408
Available for sale securities, Gross Unrealized Losses	(214)	(105)
Available-for-sale Securities	12,701	13,841
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	31	42
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	17,764	16,464
Available for sale securities, Gross Unrealized Gains	228	370
Available for sale securities, Gross Unrealized Losses	(165)	(52)
Available-for-sale Securities	17,827	16,782
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	17	29
Equity securities available for sale
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost, Total	0	1,305
Available for sale securities, Gross Unrealized Gains	0	424
Available for sale securities, Gross Unrealized Losses	0	(21)
Available-for-sale Securities	0	1,708
Total, Other-Than-Temporary Impairments in AOCI	0	0
Equity securities available for sale | Common Stock
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost, Total		703
Available for sale securities, Gross Unrealized Gains		379
Available for sale securities, Gross Unrealized Losses		(21)
Available-for-sale Securities		1,061
Total, Other-Than-Temporary Impairments in AOCI	0	0
Equity securities available for sale | Preferred Stock
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost, Total		504
Available for sale securities, Gross Unrealized Gains		29
Available for sale securities, Gross Unrealized Losses		0
Available-for-sale Securities		533
Total, Other-Than-Temporary Impairments in AOCI	0	0
Equity securities available for sale | Mutual Funds
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost, Total		98
Available for sale securities, Gross Unrealized Gains		16
Available for sale securities, Gross Unrealized Losses		0
Available-for-sale Securities		114
Total, Other-Than-Temporary Impairments in AOCI	$ 0	$ 0