FAIR VALUE MEASUREMENTS (Details - Assets and Liabilities Measured at Fair Value on a Recurring Basis) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	$ 238,992	$ 241,537
Other bond securities	12,772	13,998
Equity securities available for sale	1,708	2,078
Other equity securities	589	482
Other invested assets	6,248	6,946
Derivative Assets, Fair Value	3,545	3,977
Derivative assets, Counterparty netting	(1,464)	(1,265)
Derivative assets, Cash collateral	(1,159)	(903)
Short-term investments, portion measured at fair value	2,615	3,341
Separate account assets, at fair value	92,798	82,972
Other assets	922	1,809
Fair Value, Liabilities Measured on Recurring Basis
Policyholder contract deposits, portion measured at fair value	4,150	3,058
Other policyholder funds	3,648	3,989
Derivative Liabilities, Fair Value	3,748	4,802
Derivative liabilities, Counterparty netting	(1,464)	(1,265)
Derivative liabilities, Cash collateral	(1,249)	(1,521)
Long-term debt, portion measured at fair value	2,888	3,428
Other liabilities	1,124	2,016
Preferred Stock
Fair Value, Liabilities Measured on Recurring Basis
Assets transferred from Level 1 to Level 2	126	0
Recurring Basis | U.S. government and government sponsored entities
Fair Value, Liabilities Measured on Recurring Basis
Assets transferred from Level 1 to Level 2	113	34
Recurring Basis | Non-U.S. governments
Fair Value, Liabilities Measured on Recurring Basis
Assets transferred from Level 1 to Level 2	392	1,074
Recurring Basis | Level 1
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	221	115
Other bond securities	238	0
Equity securities available for sale	1,189	2,068
Other equity securities	589	482
Mortgage and other loans receivable		0
Other invested assets	0	0
Derivative Assets, Fair Value	189	188
Short-term investments, portion measured at fair value	2,078	2,660
Separate account assets, at fair value	87,141	77,318
Fair value assets measured on recurring basis, total	91,645	82,831
Fair Value, Liabilities Measured on Recurring Basis
Other policyholder funds	0	5
Derivative Liabilities, Fair Value	4	12
Other liabilities	46	0
Fair value liabilities measured on recurring basis, total	50	17
Recurring Basis | Level 1 | Interest rate contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value	1	0
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value	2
Recurring Basis | Level 1 | Equity contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value	188	188
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value	2	12
Recurring Basis | Level 1 | U.S. government and government sponsored entities
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	201	63
Other bond securities	238	0
Recurring Basis | Level 1 | Obligations of states, municipalities and political subdivisions
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale		0
Other bond securities	0	0
Recurring Basis | Level 1 | Non-U.S. governments
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	20	52
Other bond securities	0	0
Recurring Basis | Level 1 | Corporate debt
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale		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
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
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
Other bond securities	0	0
Recurring Basis | Level 1 | Common Stock
Fair Value, Assets Measured on Recurring Basis
Equity securities available for sale	1,061	1,056
Recurring Basis | Level 1 | Preferred Stock
Fair Value, Assets Measured on Recurring Basis
Equity securities available for sale	18	752
Recurring Basis | Level 1 | Mutual Funds
Fair Value, Assets Measured on Recurring Basis
Equity securities available for sale	110	260
Recurring Basis | Level 2
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	209,775	211,451
Other bond securities	6,022	6,518
Equity securities available for sale	519	10
Other equity securities	0	0
Mortgage and other loans receivable		0
Other invested assets	1	1
Derivative Assets, Fair Value	3,249	3,713
Short-term investments, portion measured at fair value	537	681
Separate account assets, at fair value	5,657	5,654
Other assets		0
Fair value assets measured on recurring basis, total	225,760	228,028
Fair Value, Liabilities Measured on Recurring Basis
Policyholder contract deposits, portion measured at fair value	14	25
Other policyholder funds		0
Derivative Liabilities, Fair Value	3,450	4,405
Long-term debt, portion measured at fair value	2,888	3,357
Other liabilities	43	0
Fair value liabilities measured on recurring basis, total	6,395	7,787
Recurring Basis | Level 2 | Interest rate contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value	2,170	2,328
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value	2,176	3,039
Recurring Basis | Level 2 | Foreign exchange contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value	827	1,320
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value	1,241	1,358
Recurring Basis | Level 2 | Equity contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value	252	59
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value	19	7
Recurring Basis | Level 2 | Credit contracts
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value	14
Recurring Basis | Level 2 | Other contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value	0	6
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value	0	1
Recurring Basis | Level 2 | U.S. government and government sponsored entities
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	2,455	1,929
Other bond securities	2,564	2,939
Recurring Basis | Level 2 | Obligations of states, municipalities and political subdivisions
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	16,240	22,732
Other bond securities	0	0
Recurring Basis | Level 2 | Non-U.S. governments
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	15,631	14,466
Other bond securities	57	51
Recurring Basis | Level 2 | Corporate debt
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	133,003	131,047
Other bond securities	1,891	1,755
Recurring Basis | Level 2 | Residential mortgage-backed securities (RMBS)
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	21,098	20,468
Other bond securities	421	420
Recurring Basis | Level 2 | Commercial mortgage-backed securities (CMBS)
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	13,217	12,231
Other bond securities	485	448
Recurring Basis | Level 2 | Collateralized Debt Obligations/Asset Backed Securities (CDO/ABS)
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	8,131	8,578
Other bond securities	604	905
Recurring Basis | Level 2 | Common Stock
Fair Value, Assets Measured on Recurring Basis
Equity securities available for sale	0	9
Recurring Basis | Level 2 | Preferred Stock
Fair Value, Assets Measured on Recurring Basis
Equity securities available for sale	515	0
Recurring Basis | Level 2 | Mutual Funds
Fair Value, Assets Measured on Recurring Basis
Equity securities available for sale	4	1
Recurring Basis | Level 3
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	28,996	29,971
Other bond securities	6,512	7,480
Equity securities available for sale	0	0
Other equity securities	0	0
Mortgage and other loans receivable	5	11
Other invested assets	250	204
Derivative Assets, Fair Value	107	76
Fair value assets measured on recurring basis, total	35,870	37,742
Fair Value, Liabilities Measured on Recurring Basis
Policyholder contract deposits, portion measured at fair value	4,136	3,033
Derivative Liabilities, Fair Value	294	385
Long-term debt, portion measured at fair value	0	71
Other liabilities		0
Fair value liabilities measured on recurring basis, total	4,430	3,489
Recurring Basis | Level 3 | Interest rate contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value	0	0
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value	22	38
Recurring Basis | Level 3 | Foreign exchange contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value	4	0
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value	4	11
Recurring Basis | Level 3 | Equity contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value	82	58
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value	0	0
Recurring Basis | Level 3 | Credit contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value	1	2
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value	263	331
Recurring Basis | Level 3 | Other contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value	20	16
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value	5	5
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	2,404	2,040
Other bond securities	0	0
Recurring Basis | Level 3 | Non-U.S. governments
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	8	17
Other bond securities	0	0
Recurring Basis | Level 3 | Corporate debt
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	1,173	1,133
Other bond securities	18	17
Recurring Basis | Level 3 | Residential mortgage-backed securities (RMBS)
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	16,136	16,906
Other bond securities	1,464	1,605
Recurring Basis | Level 3 | Commercial mortgage-backed securities (CMBS)
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	624	2,040
Other bond securities	74	155
Recurring Basis | Level 3 | Collateralized Debt Obligations/Asset Backed Securities (CDO/ABS)
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	8,651	7,835
Other bond securities	4,956	5,703
Recurring Basis | Level 3 | Common Stock
Fair Value, Assets Measured on Recurring Basis
Equity securities available for sale		0
Recurring Basis | Level 3 | Preferred Stock
Fair Value, Assets Measured on Recurring Basis
Equity securities available for sale		0
Recurring Basis | Level 3 | Mutual Funds
Fair Value, Assets Measured on Recurring Basis
Equity securities available for sale		0
Recurring Basis | Counterparty Netting
Fair Value, Assets Measured on Recurring Basis
Derivative assets, Counterparty netting	(1,464)	(1,265)
Fair value assets measured on recurring basis, total	(1,464)	(1,265)
Fair Value, Liabilities Measured on Recurring Basis
Derivative liabilities, Counterparty netting	(1,464)	(1,265)
Other liabilities		0
Fair value liabilities measured on recurring basis, total	(1,464)	(1,265)
Recurring Basis | Counterparty Netting | Counterparty netting and cash collateral
Fair Value, Assets Measured on Recurring Basis
Derivative assets, Counterparty netting	(1,464)	(1,265)
Fair Value, Liabilities Measured on Recurring Basis
Derivative liabilities, Counterparty netting	(1,464)	(1,265)
Recurring Basis | Cash Collateral
Fair Value, Assets Measured on Recurring Basis
Derivative assets, Cash collateral	(1,159)	(903)
Fair value assets measured on recurring basis, total	(1,159)	(903)
Fair Value, Liabilities Measured on Recurring Basis
Derivative liabilities, Cash collateral	(1,249)	(1,521)
Other liabilities		0
Fair value liabilities measured on recurring basis, total	(1,249)	(1,521)
Recurring Basis | Cash Collateral | Counterparty netting and cash collateral
Fair Value, Assets Measured on Recurring Basis
Derivative assets, Cash collateral	(1,159)	(903)
Fair Value, Liabilities Measured on Recurring Basis
Derivative liabilities, Cash collateral	(1,249)	(1,521)
Recurring Basis | Total Fair Value
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	238,992	241,537
Other bond securities	12,772	13,998
Equity securities available for sale	1,708	2,078
Other equity securities	589	482
Mortgage and other loans receivable	5	11
Other invested assets	251	205
Derivative Assets, Fair Value	922	1,809
Short-term investments, portion measured at fair value	2,615	3,341
Separate account assets, at fair value	92,798	82,972
Other assets		0
Fair value assets measured on recurring basis, total	350,652	346,433
Fair Value, Liabilities Measured on Recurring Basis
Policyholder contract deposits, portion measured at fair value	4,150	3,058
Other policyholder funds	0	5
Derivative Liabilities, Fair Value	1,035	2,016
Long-term debt, portion measured at fair value	2,888	3,428
Other liabilities	89	0
Fair value liabilities measured on recurring basis, total	8,162	8,507
Recurring Basis | Total Fair Value | Interest rate contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value	2,171	2,328
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value	2,200	3,077
Recurring Basis | Total Fair Value | Foreign exchange contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value	831	1,320
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value	1,245	1,369
Recurring Basis | Total Fair Value | Equity contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value	522	305
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value	21	19
Recurring Basis | Total Fair Value | Credit contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value	1	2
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value	277	331
Recurring Basis | Total Fair Value | Other contracts
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value	20	22
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value	5	6
Recurring Basis | Total Fair Value | Counterparty netting and cash collateral
Fair Value, Assets Measured on Recurring Basis
Derivative Assets, Fair Value	(2,623)	(2,168)
Fair Value, Liabilities Measured on Recurring Basis
Derivative Liabilities, Fair Value	(2,713)	(2,786)
Recurring Basis | Total Fair Value | U.S. government and government sponsored entities
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	2,656	1,992
Other bond securities	2,802	2,939
Recurring Basis | Total Fair Value | Obligations of states, municipalities and political subdivisions
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	18,644	24,772
Other bond securities	0	0
Recurring Basis | Total Fair Value | Non-U.S. governments
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	15,659	14,535
Other bond securities	57	51
Recurring Basis | Total Fair Value | Corporate debt
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	134,176	132,180
Other bond securities	1,909	1,772
Recurring Basis | Total Fair Value | Residential mortgage-backed securities (RMBS)
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	37,234	37,374
Other bond securities	1,885	2,025
Recurring Basis | Total Fair Value | Commercial mortgage-backed securities (CMBS)
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	13,841	14,271
Other bond securities	559	603
Recurring Basis | Total Fair Value | Collateralized Debt Obligations/Asset Backed Securities (CDO/ABS)
Fair Value, Assets Measured on Recurring Basis
Bonds available for sale	16,782	16,413
Other bond securities	5,560	6,608
Recurring Basis | Total Fair Value | Common Stock
Fair Value, Assets Measured on Recurring Basis
Equity securities available for sale	1,061	1,065
Recurring Basis | Total Fair Value | Preferred Stock
Fair Value, Assets Measured on Recurring Basis
Equity securities available for sale	533	752
Recurring Basis | Total Fair Value | Mutual Funds
Fair Value, Assets Measured on Recurring Basis
Equity securities available for sale	$ 114	$ 261