FAIR VALUE MEASUREMENTS (Details - Net realized and unrealized gains and losses included in income related to Level 3 assets and liabilities) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains and losses related to Level 3 items, assets	$ 338	$ (105)
Policyholder contract deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains (losses) included in income, liabilities	(2,260)	1,171
Policyholder contract deposits | Net investment income
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains (losses) included in income, liabilities	0	0
Policyholder contract deposits | Net realized capital gains (losses)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains (losses) included in income, liabilities	(2,260)	1,171
Policyholder contract deposits | Other Income
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains (losses) included in income, liabilities	0	0
Derivative liabilities, net
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains (losses) included in income, liabilities	(37)	(157)
Derivative liabilities, net | Net investment income
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains (losses) included in income, liabilities	0	0
Derivative liabilities, net | Net realized capital gains (losses)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains (losses) included in income, liabilities	(23)	(143)
Derivative liabilities, net | Other Income
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains (losses) included in income, liabilities	(14)	(14)
Fortitude Re funds withheld payable
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains (losses) included in income, liabilities	(2,382)
Fortitude Re funds withheld payable | Net investment income
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains (losses) included in income, liabilities	0
Fortitude Re funds withheld payable | Net realized capital gains (losses)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains (losses) included in income, liabilities	(2,382)
Fortitude Re funds withheld payable | Other Income
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains (losses) included in income, liabilities	0
Bonds available for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains and losses related to Level 3 items, assets	194	94
Bonds available for sale | Net investment income
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains and losses related to Level 3 items, assets	185	198
Bonds available for sale | Net realized capital gains (losses)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains and losses related to Level 3 items, assets	9	(104)
Bonds available for sale | Other Income
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains and losses related to Level 3 items, assets	0	0
Other bond securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains and losses related to Level 3 items, assets	(9)	(194)
Other bond securities | Net investment income
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains and losses related to Level 3 items, assets	(31)	(462)
Other bond securities | Net realized capital gains (losses)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains and losses related to Level 3 items, assets	22	268
Other bond securities | Other Income
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains and losses related to Level 3 items, assets	0	0
Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains and losses related to Level 3 items, assets	11	(1)
Equity securities | Net investment income
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains and losses related to Level 3 items, assets	11	0
Equity securities | Net realized capital gains (losses)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains and losses related to Level 3 items, assets	0	(1)
Equity securities | Other Income
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains and losses related to Level 3 items, assets	0	0
Other invested assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains and losses related to Level 3 items, assets	142	(4)
Other invested assets | Net investment income
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains and losses related to Level 3 items, assets	142	(4)
Other invested assets | Net realized capital gains (losses)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains and losses related to Level 3 items, assets	0	0
Other invested assets | Other Income
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net realized and unrealized gains and losses related to Level 3 items, assets	$ 0	$ 0