FAIR VALUE MEASUREMENTS (Details - Assets and Liabilities Measured at Fair Value on a Recurring Basis) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	$ 251,086	$ 229,391
Other bond securities	6,682	11,415
Equity securities	841	1,253
Other invested assets	6,827	5,894
Derivative Assets, Fair Value, Gross	5,026	4,468
Derivative assets, Counterparty netting	(2,427)	(1,713)
Derivative assets, Cash collateral	(1,806)	(1,840)
Derivative assets	793	915
Short-term investments, portion measured at fair value	5,343	3,015
Separate account assets, at fair value	93,272	81,847
Fair Value, Liabilities Measured on Recurring Basis
Policyholder contract deposits, portion measured at fair value	6,910	4,116
Other policyholder funds	3,428	3,568
Derivative Liabilities, Fair Value, Gross	4,009	3,138
Derivative liabilities, Counterparty netting	(2,427)	(1,713)
Derivative liabilities, Cash collateral	(527)	(187)
Derivative liabilities	1,055	1,238
Other liabilities	1,100	1,265
Long-term debt	2,062	2,213
Fair Value Using Net Asset Value Per Share or its equivalent	5,549	4,966
Recurring Basis
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	251,086	229,391
Other bond securities	6,682	11,415
Equity securities	841	1,253
Other invested assets	1,278	928
Derivative assets, Counterparty netting	(2,427)	(1,713)
Derivative assets, Cash collateral	(1,806)	(1,840)
Derivative assets, Counterparty netting and cash collateral	(4,233)	(3,553)
Derivative assets	793	915
Short-term investments, portion measured at fair value	5,343	3,015
Other assets	2,358	58
Separate account assets, at fair value	93,272	81,847
Fair value assets measured on recurring basis, total	361,653	328,822
Fair Value, Liabilities Measured on Recurring Basis
Policyholder contract deposits, portion measured at fair value	6,910	4,116
Derivative liabilities, Counterparty netting	(2,427)	(1,713)
Derivative liabilities, Cash collateral	(527)	(187)
Derivative liabilities, Counterparty netting and cash collateral	(2,954)	(1,900)
Derivative liabilities	1,055	1,238
Other liabilities	45	27
Long-term debt	2,062	2,213
Fair value liabilities measured on recurring basis, total	10,072	7,594
Recurring Basis | Interest rate contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value, Gross	3,200	2,890
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value, Gross	2,749	2,023
Recurring Basis | Foreign exchange contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value, Gross	1,040	1,164
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value, Gross	1,025	858
Recurring Basis | Equity contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value, Gross	769	398
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value, Gross	139	15
Recurring Basis | Credit contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value, Gross	3	1
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value, Gross	89	236
Recurring Basis | Other contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value, Gross	14	15
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value, Gross	7	6
Recurring Basis | U.S. government and government sponsored entities
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	5,380	3,260
Other bond securities	2,121	2,665
Recurring Basis | Obligations of states, municipalities and political subdivisions
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	15,318	16,001
Recurring Basis | Non-U.S. governments
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	14,869	14,525
Other bond securities	0	45
Recurring Basis | Corporate debt
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	149,636	130,700
Other bond securities	18	1,671
Recurring Basis | Residential mortgage-backed securities (RMBS)
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	32,805	34,377
Other bond securities	489	1,714
Recurring Basis | Commercial mortgage-backed securities (CMBS)
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	14,430	12,701
Other bond securities	322	388
Recurring Basis | Collateralized Debt Obligations/Asset Backed Securities (CDO/ABS)
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	18,648	17,827
Other bond securities	3,732	4,932
Recurring Basis | Level 1
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	195	122
Other bond securities	0	11
Equity securities	756	1,213
Other invested assets	0	0
Derivative Assets, Fair Value, Gross	6	135
Short-term investments, portion measured at fair value	2,299	2,416
Other assets	57	0
Separate account assets, at fair value	89,069	77,202
Fair value assets measured on recurring basis, total	92,382	81,099
Fair Value, Liabilities Measured on Recurring Basis
Policyholder contract deposits, portion measured at fair value	0	0
Derivative Liabilities, Fair Value, Gross	12	16
Other liabilities	0	16
Long-term debt	0	0
Fair value liabilities measured on recurring basis, total	12	32
Recurring Basis | Level 1 | Interest rate contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value, Gross	1	2
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value, Gross	4	4
Recurring Basis | Level 1 | Foreign exchange contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value, Gross	0	0
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value, Gross	0	0
Recurring Basis | Level 1 | Equity contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value, Gross	5	133
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value, Gross	8	12
Recurring Basis | Level 1 | Credit contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value, Gross	0	0
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value, Gross	0	0
Recurring Basis | Level 1 | Other contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value, Gross	0	0
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value, Gross	0	0
Recurring Basis | Level 1 | U.S. government and government sponsored entities
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	135	53
Other bond securities	0	11
Recurring Basis | Level 1 | Obligations of states, municipalities and political subdivisions
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	0	0
Recurring Basis | Level 1 | Non-U.S. governments
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	60	69
Other bond securities	0	0
Recurring Basis | Level 1 | Corporate debt
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	0	0
Other bond securities	0	0
Recurring Basis | Level 1 | Residential mortgage-backed securities (RMBS)
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	0	0
Other bond securities	0	0
Recurring Basis | Level 1 | Commercial mortgage-backed securities (CMBS)
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	0	0
Other bond securities	0	0
Recurring Basis | Level 1 | Collateralized Debt Obligations/Asset Backed Securities (CDO/ABS)
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	0	0
Other bond securities	0	0
Recurring Basis | Level 2
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	224,960	202,176
Other bond securities	2,944	5,559
Equity securities	77	13
Other invested assets	86	341
Derivative Assets, Fair Value, Gross	4,826	4,237
Short-term investments, portion measured at fair value	3,044	599
Other assets	2,212	0
Separate account assets, at fair value	4,203	4,645
Fair value assets measured on recurring basis, total	242,352	217,570
Fair Value, Liabilities Measured on Recurring Basis
Policyholder contract deposits, portion measured at fair value	0	0
Derivative Liabilities, Fair Value, Gross	3,905	2,873
Other liabilities	45	11
Long-term debt	2,062	2,213
Fair value liabilities measured on recurring basis, total	6,012	5,097
Recurring Basis | Level 2 | Interest rate contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value, Gross	3,199	2,888
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value, Gross	2,745	2,004
Recurring Basis | Level 2 | Foreign exchange contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value, Gross	1,034	1,159
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value, Gross	1,025	858
Recurring Basis | Level 2 | Equity contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value, Gross	593	190
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value, Gross	111	3
Recurring Basis | Level 2 | Credit contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value, Gross	0	0
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value, Gross	24	8
Recurring Basis | Level 2 | Other contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value, Gross	0	0
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value, Gross	0	0
Recurring Basis | Level 2 | U.S. government and government sponsored entities
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	5,245	3,207
Other bond securities	2,121	2,654
Recurring Basis | Level 2 | Obligations of states, municipalities and political subdivisions
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	13,197	14,001
Recurring Basis | Level 2 | Non-U.S. governments
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	14,809	14,445
Other bond securities	0	45
Recurring Basis | Level 2 | Corporate debt
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	147,973	129,836
Other bond securities	18	1,671
Recurring Basis | Level 2 | Residential mortgage-backed securities (RMBS)
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	19,397	20,178
Other bond securities	346	424
Recurring Basis | Level 2 | Commercial mortgage-backed securities (CMBS)
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	13,377	11,784
Other bond securities	272	311
Recurring Basis | Level 2 | Collateralized Debt Obligations/Asset Backed Securities (CDO/ABS)
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	10,962	8,725
Other bond securities	187	454
Recurring Basis | Level 3
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	25,931	27,093
Other bond securities	3,738	5,845
Equity securities	8	27
Other invested assets	1,192	587
Derivative Assets, Fair Value, Gross	194	96
Short-term investments, portion measured at fair value	0	0
Other assets	89	58
Separate account assets, at fair value	0	0
Fair value assets measured on recurring basis, total	31,152	33,706
Fair Value, Liabilities Measured on Recurring Basis
Policyholder contract deposits, portion measured at fair value	6,910	4,116
Derivative Liabilities, Fair Value, Gross	92	249
Other liabilities	0	0
Long-term debt	0	0
Fair value liabilities measured on recurring basis, total	7,002	4,365
Recurring Basis | Level 3 | Interest rate contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value, Gross	0	0
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value, Gross	0	15
Recurring Basis | Level 3 | Foreign exchange contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value, Gross	6	5
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value, Gross	0	0
Recurring Basis | Level 3 | Equity contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value, Gross	171	75
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value, Gross	20	0
Recurring Basis | Level 3 | Credit contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value, Gross	3	1
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value, Gross	65	228
Recurring Basis | Level 3 | Other contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value, Gross	14	15
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value, Gross	7	6
Recurring Basis | Level 3 | U.S. government and government sponsored entities
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	0	0
Other bond securities	0	0
Recurring Basis | Level 3 | Obligations of states, municipalities and political subdivisions
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	2,121	2,000
Recurring Basis | Level 3 | Non-U.S. governments
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	0	11
Other bond securities	0	0
Recurring Basis | Level 3 | Corporate debt
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	1,663	864
Other bond securities	0	0
Recurring Basis | Level 3 | Residential mortgage-backed securities (RMBS)
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	13,408	14,199
Other bond securities	143	1,290
Recurring Basis | Level 3 | Commercial mortgage-backed securities (CMBS)
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	1,053	917
Other bond securities	50	77
Recurring Basis | Level 3 | Collateralized Debt Obligations/Asset Backed Securities (CDO/ABS)
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	7,686	9,102
Other bond securities	$ 3,545	$ 4,478