INVESTMENTS (Details - Value of other securities measured at fair value based on election of the fair value option) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Schedule of Trading Securities and Other Trading Assets [Line Items]
Other Securities, Fair Value	$ 14,122	$ 13,361
Other Securities, Percent of Total	100.00%	100.00%
U.S. Government agency backed ABS
Schedule of Trading Securities and Other Trading Assets [Line Items]
Other Securities, Fair Value	$ 220	$ 251
Fixed maturity securities
Schedule of Trading Securities and Other Trading Assets [Line Items]
Other Securities, Fair Value	$ 12,397	$ 12,772
Other Securities, Percent of Total	88.00%	96.00%
Fixed maturity securities | U.S. government and government sponsored entities
Schedule of Trading Securities and Other Trading Assets [Line Items]
Other Securities, Fair Value	$ 2,777	$ 2,802
Other Securities, Percent of Total	20.00%	21.00%
Fixed maturity securities | Non-U.S. governments
Schedule of Trading Securities and Other Trading Assets [Line Items]
Other Securities, Fair Value	$ 54	$ 57
Other Securities, Percent of Total	0.00%	1.00%
Fixed maturity securities | Corporate debt
Schedule of Trading Securities and Other Trading Assets [Line Items]
Other Securities, Fair Value	$ 1,803	$ 1,909
Other Securities, Percent of Total	13.00%	14.00%
Fixed maturity securities | Mortgage-backed, asset-backed and collateralized
Schedule of Trading Securities and Other Trading Assets [Line Items]
Other Securities, Fair Value	$ 7,763	$ 8,004
Other Securities, Percent of Total	55.00%	60.00%
Fixed maturity securities | Residential mortgage-backed securities (RMBS)
Schedule of Trading Securities and Other Trading Assets [Line Items]
Other Securities, Fair Value	$ 1,818	$ 1,885
Other Securities, Percent of Total	13.00%	14.00%
Fixed maturity securities | Commercial mortgage-backed securities (CMBS)
Schedule of Trading Securities and Other Trading Assets [Line Items]
Other Securities, Fair Value	$ 566	$ 559
Other Securities, Percent of Total	4.00%	4.00%
Fixed maturity securities | Collateralized Debt Obligations/Asset-Backed Securities (CDO/ABS)
Schedule of Trading Securities and Other Trading Assets [Line Items]
Other Securities, Fair Value	$ 5,379	$ 5,560
Other Securities, Percent of Total	38.00%	42.00%
Equity securities
Schedule of Trading Securities and Other Trading Assets [Line Items]
Other Securities, Fair Value	$ 1,725	$ 589
Other Securities, Percent of Total	12.00%	4.00%