INVESTMENTS (Details - Amortized cost or cost and fair value of Available for sale securities) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost, Total	$ 228,608	$ 225,780
Available for sale securities, Gross Unrealized Gains	11,591	8,419
Available for sale securities, Gross Unrealized Losses	(1,998)	(4,808)
Available-for-sale Securities	238,201	229,391
Total, Other-Than-Temporary Impairments in AOCI		0
AOCI- OTTI
Schedule of Available-for-sale Securities [Line Items]
Total, Other-Than-Temporary Impairments in AOCI	1,195	1,211
Common Stock
Schedule of Available-for-sale Securities [Line Items]
Total, Other-Than-Temporary Impairments in AOCI		0
Mutual Funds
Schedule of Available-for-sale Securities [Line Items]
Total, Other-Than-Temporary Impairments in AOCI		0
Bonds available for sale
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost, Total	228,608	225,780
Available for sale securities, Gross Unrealized Gains	11,591	8,419
Available for sale securities, Gross Unrealized Losses	(1,998)	(4,808)
Available-for-sale Securities	238,201	229,391
Other details of available for sale securities
Available for sale securities not rated or rated below investment grade	29,100	28,800
Bonds available for sale | AOCI- OTTI
Schedule of Available-for-sale Securities [Line Items]
Total, Other-Than-Temporary Impairments in AOCI	1,195	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	3,267	3,170
Available for sale securities, Gross Unrealized Gains	151	132
Available for sale securities, Gross Unrealized Losses	(17)	(42)
Available-for-sale Securities	3,401	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	14,952	15,421
Available for sale securities, Gross Unrealized Gains	1,013	701
Available for sale securities, Gross Unrealized Losses	(43)	(121)
Available-for-sale Securities	15,922	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	14,799	14,376
Available for sale securities, Gross Unrealized Gains	600	451
Available for sale securities, Gross Unrealized Losses	(125)	(302)
Available-for-sale Securities	15,274	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	0	0
Bonds available for sale | Corporate debt
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost, Total	133,768	130,436
Available for sale securities, Gross Unrealized Gains	6,314	3,911
Available for sale securities, Gross Unrealized Losses	(1,409)	(3,647)
Available-for-sale Securities	138,673	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	(24)	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	61,822	62,377
Available for sale securities, Gross Unrealized Gains	3,513	3,224
Available for sale securities, Gross Unrealized Losses	(404)	(696)
Available-for-sale Securities	64,931	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	1,219	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	31,324	31,940
Available for sale securities, Gross Unrealized Gains	2,871	2,754
Available for sale securities, Gross Unrealized Losses	(191)	(317)
Available-for-sale Securities	34,004	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	1,171	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	12,895	12,673
Available for sale securities, Gross Unrealized Gains	355	242
Available for sale securities, Gross Unrealized Losses	(89)	(214)
Available-for-sale Securities	13,161	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	31	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	17,603	17,764
Available for sale securities, Gross Unrealized Gains	287	228
Available for sale securities, Gross Unrealized Losses	(124)	(165)
Available-for-sale Securities	17,766	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	17	17
Equity securities
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost, Total	0	0
Available for sale securities, Gross Unrealized Gains	0	0
Available for sale securities, Gross Unrealized Losses	0	0
Available-for-sale Securities	0	0
Equity securities | Common Stock
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost, Total	0	0
Available for sale securities, Gross Unrealized Gains	0	0
Available for sale securities, Gross Unrealized Losses	0	0
Available-for-sale Securities	0	0
Equity securities | Mutual Funds
Schedule of Available-for-sale Securities [Line Items]
Available for sale securities, Amortized Cost, Total	0	0
Available for sale securities, Gross Unrealized Gains	0	0
Available for sale securities, Gross Unrealized Losses	0	0
Available-for-sale Securities	$ 0	$ 0