FAIR VALUE MEASUREMENTS (Details - Changes in Level 3 Recurring Fair Value Measurements) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Fair Value Beginning of Period, assets	$ 30,958	$ 33,610
Net Realized and Unrealized Gains (Losses) Included in Income, assets	(105)	317
Other Comprehensive Income (Loss), assets	(2,296)	230
Purchases, Sales, Issuances and Settlements, Net, assets	(819)	(491)
Gross Transfers In, assets	1,932	798
Gross Transfers Out, assets	(597)	(741)
Reclassification of Held for Sale, assets	(3)	0
Fair Value End of Period, assets	29,070	33,723
Changes in Unrealized Gains (Losses) Inlcuded in Income on Instruments Held at End of Period, assets	(270)	29
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period, assets	(2,100)
Liabilities
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Fair Value Beginning of Period, liabilities	6,808	4,269
Net realized and unrealized gains (losses) included in income, liabilities	1,014	529
Other Comprehensive Income (Loss), liabilities	0	0
Purchases, Sales, Issuances and Settlements, Net, liabilities	113	212
Gross Transfers In, liabilities	0	0
Gross Transfers Out, liabilities	0	0
Reclassified to Held for Sale, liabilities	0	0
Fair Value End of Year, liabilities	7,935	5,010
Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period, liabilities	(769)	(483)
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period, liabilities	0
Policyholder contract deposits
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Fair Value Beginning of Period, liabilities	6,910	4,116
Net realized and unrealized gains (losses) included in income, liabilities	1,171	569
Other Comprehensive Income (Loss), liabilities	0	0
Purchases, Sales, Issuances and Settlements, Net, liabilities	72	193
Gross Transfers In, liabilities	0	0
Gross Transfers Out, liabilities	0	0
Reclassified to Held for Sale, liabilities	0	0
Fair Value End of Year, liabilities	8,153	4,878
Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period, liabilities	(884)	(521)
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period, liabilities	0
Derivative liabilities, net
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Fair Value Beginning of Period, liabilities	(102)	153
Net realized and unrealized gains (losses) included in income, liabilities	(157)	(40)
Other Comprehensive Income (Loss), liabilities	0	0
Purchases, Sales, Issuances and Settlements, Net, liabilities	41	19
Gross Transfers In, liabilities	0	0
Gross Transfers Out, liabilities	0	0
Reclassified to Held for Sale, liabilities	0	0
Fair Value End of Year, liabilities	(218)	132
Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period, liabilities	115	38
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period, liabilities	0
Interest rate contracts
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Fair Value Beginning of Period, liabilities	0	15
Net realized and unrealized gains (losses) included in income, liabilities	0	1
Other Comprehensive Income (Loss), liabilities	0	0
Purchases, Sales, Issuances and Settlements, Net, liabilities	0	(1)
Gross Transfers In, liabilities	0	0
Gross Transfers Out, liabilities	0	0
Reclassified to Held for Sale, liabilities	0	0
Fair Value End of Year, liabilities	0	15
Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period, liabilities	0	(1)
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period, liabilities	0
Foreign exchange contracts
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Fair Value Beginning of Period, liabilities	(6)	(5)
Net realized and unrealized gains (losses) included in income, liabilities	3	(5)
Other Comprehensive Income (Loss), liabilities	0	0
Purchases, Sales, Issuances and Settlements, Net, liabilities	6	9
Gross Transfers In, liabilities	0	0
Gross Transfers Out, liabilities	0	0
Reclassified to Held for Sale, liabilities	0	0
Fair Value End of Year, liabilities	3	(1)
Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period, liabilities	1	(1)
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period, liabilities	0
Equity contracts
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Fair Value Beginning of Period, liabilities	(151)	(75)
Net realized and unrealized gains (losses) included in income, liabilities	(26)	(16)
Other Comprehensive Income (Loss), liabilities	0	0
Purchases, Sales, Issuances and Settlements, Net, liabilities	34	(5)
Gross Transfers In, liabilities	0	0
Gross Transfers Out, liabilities	0	0
Reclassified to Held for Sale, liabilities	0	0
Fair Value End of Year, liabilities	(143)	(96)
Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period, liabilities	(14)	19
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period, liabilities	0
Credit contracts
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Fair Value Beginning of Period, liabilities	62	227
Net realized and unrealized gains (losses) included in income, liabilities	(124)	(3)
Other Comprehensive Income (Loss), liabilities	0	0
Purchases, Sales, Issuances and Settlements, Net, liabilities	(14)	(2)
Gross Transfers In, liabilities	0	0
Gross Transfers Out, liabilities	0	0
Reclassified to Held for Sale, liabilities	0	0
Fair Value End of Year, liabilities	(76)	222
Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period, liabilities	118	4
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period, liabilities	0
Other contracts
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Fair Value Beginning of Period, liabilities	(7)	(9)
Net realized and unrealized gains (losses) included in income, liabilities	(10)	(17)
Other Comprehensive Income (Loss), liabilities	0	0
Purchases, Sales, Issuances and Settlements, Net, liabilities	15	18
Gross Transfers In, liabilities	0	0
Gross Transfers Out, liabilities	0	0
Reclassified to Held for Sale, liabilities	0	0
Fair Value End of Year, liabilities	(2)	(8)
Changes in Unrealized Gains (Losses) Included in Income on Instruments Held at End of Period, liabilities	10	17
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period, liabilities	0
Bonds available for sale
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Fair Value Beginning of Period, assets	25,931	27,093
Net Realized and Unrealized Gains (Losses) Included in Income, assets	94	228
Other Comprehensive Income (Loss), assets	(2,297)	230
Purchases, Sales, Issuances and Settlements, Net, assets	12	(257)
Gross Transfers In, assets	1,781	798
Gross Transfers Out, assets	(597)	(644)
Reclassification of Held for Sale, assets	0	0
Fair Value End of Period, assets	24,924	27,448
Changes in Unrealized Gains (Losses) Inlcuded in Income on Instruments Held at End of Period, assets	0	0
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period, assets	(2,100)
Bonds available for sale | Obligations of states, municipalities and political subdivisions
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Fair Value Beginning of Period, assets	2,121	2,000
Net Realized and Unrealized Gains (Losses) Included in Income, assets	5	(1)
Other Comprehensive Income (Loss), assets	(55)	97
Purchases, Sales, Issuances and Settlements, Net, assets	137	24
Gross Transfers In, assets	27	29
Gross Transfers Out, assets	(133)	(13)
Reclassification of Held for Sale, assets	0	0
Fair Value End of Period, assets	2,102	2,136
Changes in Unrealized Gains (Losses) Inlcuded in Income on Instruments Held at End of Period, assets	0	0
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period, assets	(51)
Bonds available for sale | Non-U.S. governments
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Fair Value Beginning of Period, assets	0	11
Net Realized and Unrealized Gains (Losses) Included in Income, assets	0	0
Other Comprehensive Income (Loss), assets	0	0
Purchases, Sales, Issuances and Settlements, Net, assets	0	(4)
Gross Transfers In, assets	6	0
Gross Transfers Out, assets	0	(4)
Reclassification of Held for Sale, assets	0	0
Fair Value End of Period, assets	6	3
Changes in Unrealized Gains (Losses) Inlcuded in Income on Instruments Held at End of Period, assets	0	0
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period, assets	0
Bonds available for sale | Corporate debt
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Fair Value Beginning of Period, assets	1,663	864
Net Realized and Unrealized Gains (Losses) Included in Income, assets	(67)	(3)
Other Comprehensive Income (Loss), assets	(81)	38
Purchases, Sales, Issuances and Settlements, Net, assets	7	34
Gross Transfers In, assets	103	654
Gross Transfers Out, assets	(410)	(55)
Reclassification of Held for Sale, assets	0	0
Fair Value End of Period, assets	1,215	1,532
Changes in Unrealized Gains (Losses) Inlcuded in Income on Instruments Held at End of Period, assets	0	0
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period, assets	(29)
Bonds available for sale | Residential mortgage-backed securities (RMBS)
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Fair Value Beginning of Period, assets	13,408	14,199
Net Realized and Unrealized Gains (Losses) Included in Income, assets	132	227
Other Comprehensive Income (Loss), assets	(1,623)	24
Purchases, Sales, Issuances and Settlements, Net, assets	(223)	(412)
Gross Transfers In, assets	19	23
Gross Transfers Out, assets	(26)	(16)
Reclassification of Held for Sale, assets	0	0
Fair Value End of Period, assets	11,687	14,045
Changes in Unrealized Gains (Losses) Inlcuded in Income on Instruments Held at End of Period, assets	0	0
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period, assets	(1,505)
Bonds available for sale | Commercial mortgage-backed securities (CMBS)
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Fair Value Beginning of Period, assets	1,053	917
Net Realized and Unrealized Gains (Losses) Included in Income, assets	7	1
Other Comprehensive Income (Loss), assets	19	17
Purchases, Sales, Issuances and Settlements, Net, assets	44	146
Gross Transfers In, assets	23	0
Gross Transfers Out, assets	0	(189)
Reclassification of Held for Sale, assets	0	0
Fair Value End of Period, assets	1,146	892
Changes in Unrealized Gains (Losses) Inlcuded in Income on Instruments Held at End of Period, assets	0	0
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period, assets	21
Bonds available for sale | Collateralized Debt Obligations/Asset Backed Securities (CDO/ABS)
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Fair Value Beginning of Period, assets	7,686	9,102
Net Realized and Unrealized Gains (Losses) Included in Income, assets	17	4
Other Comprehensive Income (Loss), assets	(557)	54
Purchases, Sales, Issuances and Settlements, Net, assets	47	(45)
Gross Transfers In, assets	1,603	92
Gross Transfers Out, assets	(28)	(367)
Reclassification of Held for Sale, assets	0	0
Fair Value End of Period, assets	8,768	8,840
Changes in Unrealized Gains (Losses) Inlcuded in Income on Instruments Held at End of Period, assets	0	0
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period, assets	(536)
Other bond securities
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Fair Value Beginning of Period, assets	3,738	5,845
Net Realized and Unrealized Gains (Losses) Included in Income, assets	(194)	89
Other Comprehensive Income (Loss), assets	0	0
Purchases, Sales, Issuances and Settlements, Net, assets	(975)	(239)
Gross Transfers In, assets	0	0
Gross Transfers Out, assets	0	(96)
Reclassification of Held for Sale, assets	0	0
Fair Value End of Period, assets	2,569	5,599
Changes in Unrealized Gains (Losses) Inlcuded in Income on Instruments Held at End of Period, assets	(284)	27
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period, assets	0
Other bond securities | Corporate debt
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Fair Value Beginning of Period, assets	0	0
Net Realized and Unrealized Gains (Losses) Included in Income, assets	0	0
Other Comprehensive Income (Loss), assets	0	0
Purchases, Sales, Issuances and Settlements, Net, assets	0	0
Gross Transfers In, assets	0	0
Gross Transfers Out, assets	0	0
Reclassification of Held for Sale, assets	0	0
Fair Value End of Period, assets	0	0
Changes in Unrealized Gains (Losses) Inlcuded in Income on Instruments Held at End of Period, assets	0	0
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period, assets	0
Other bond securities | Residential mortgage-backed securities (RMBS)
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Fair Value Beginning of Period, assets	143	1,290
Net Realized and Unrealized Gains (Losses) Included in Income, assets	(14)	17
Other Comprehensive Income (Loss), assets	0	0
Purchases, Sales, Issuances and Settlements, Net, assets	20	(41)
Gross Transfers In, assets	0	0
Gross Transfers Out, assets	0	0
Reclassification of Held for Sale, assets	0	0
Fair Value End of Period, assets	149	1,266
Changes in Unrealized Gains (Losses) Inlcuded in Income on Instruments Held at End of Period, assets	(14)	0
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period, assets	0
Other bond securities | Commercial mortgage-backed securities (CMBS)
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Fair Value Beginning of Period, assets	50	77
Net Realized and Unrealized Gains (Losses) Included in Income, assets	(7)	4
Other Comprehensive Income (Loss), assets	0	0
Purchases, Sales, Issuances and Settlements, Net, assets	(1)	3
Gross Transfers In, assets	0	0
Gross Transfers Out, assets	0	0
Reclassification of Held for Sale, assets	0	0
Fair Value End of Period, assets	42	84
Changes in Unrealized Gains (Losses) Inlcuded in Income on Instruments Held at End of Period, assets	(8)	3
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period, assets	0
Other bond securities | Collateralized Debt Obligations/Asset Backed Securities (CDO/ABS)
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Fair Value Beginning of Period, assets	3,545	4,478
Net Realized and Unrealized Gains (Losses) Included in Income, assets	(173)	68
Other Comprehensive Income (Loss), assets	0	0
Purchases, Sales, Issuances and Settlements, Net, assets	(994)	(201)
Gross Transfers In, assets	0	0
Gross Transfers Out, assets	0	(96)
Reclassification of Held for Sale, assets	0	0
Fair Value End of Period, assets	2,378	4,249
Changes in Unrealized Gains (Losses) Inlcuded in Income on Instruments Held at End of Period, assets	(262)	24
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period, assets	0
Equity securities
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Fair Value Beginning of Period, assets	8	27
Net Realized and Unrealized Gains (Losses) Included in Income, assets	(1)	0
Other Comprehensive Income (Loss), assets	1	0
Purchases, Sales, Issuances and Settlements, Net, assets	10	0
Gross Transfers In, assets	1	0
Gross Transfers Out, assets	0	(1)
Reclassification of Held for Sale, assets	0	0
Fair Value End of Period, assets	19	26
Changes in Unrealized Gains (Losses) Inlcuded in Income on Instruments Held at End of Period, assets	0	0
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period, assets	0
Mortgage and other loans receivable
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Fair Value Beginning of Period, assets	0	0
Net Realized and Unrealized Gains (Losses) Included in Income, assets	0	0
Other Comprehensive Income (Loss), assets	0	0
Purchases, Sales, Issuances and Settlements, Net, assets	0	0
Gross Transfers In, assets	0	0
Gross Transfers Out, assets	0	0
Reclassification of Held for Sale, assets	0	0
Fair Value End of Period, assets	0	0
Changes in Unrealized Gains (Losses) Inlcuded in Income on Instruments Held at End of Period, assets	0	0
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period, assets	0
Other invested assets
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Fair Value Beginning of Period, assets	1,192	587
Net Realized and Unrealized Gains (Losses) Included in Income, assets	(4)	0
Other Comprehensive Income (Loss), assets	0	0
Purchases, Sales, Issuances and Settlements, Net, assets	129	4
Gross Transfers In, assets	150	0
Gross Transfers Out, assets	0	0
Reclassification of Held for Sale, assets	0	0
Fair Value End of Period, assets	1,467	591
Changes in Unrealized Gains (Losses) Inlcuded in Income on Instruments Held at End of Period, assets	14	2
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period, assets	0
Other assets
Fair value assets and liabilities measured on recurring basis, unobservable input reconciliation calculation
Fair Value Beginning of Period, assets	89	58
Net Realized and Unrealized Gains (Losses) Included in Income, assets	0	0
Other Comprehensive Income (Loss), assets	0	0
Purchases, Sales, Issuances and Settlements, Net, assets	5	1
Gross Transfers In, assets	0	0
Gross Transfers Out, assets	0	0
Reclassification of Held for Sale, assets	(3)	0
Fair Value End of Period, assets	91	59
Changes in Unrealized Gains (Losses) Inlcuded in Income on Instruments Held at End of Period, assets	0	$ 0
Changes in Unrealized Gains (Losses) Included in Other Comprehensive Income (Loss) for Recurring Level 3 Instruments Held at End of Period, assets	$ 0