INVESTMENTS (Details - Securities available for sale in a loss position) - Bonds available for sale $ in Millions	Jun. 30, 2021 USD ($) security	Dec. 31, 2020 USD ($) security
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Fair Value, Less than 12 Months	$ 36,893	$ 24,504
Gross Unrealized Losses, Less than 12 Months	960	576
Fair Value, 12 Months or More	7,071	5,314
Gross Unrealized Losses, 12 Months or More	370	192
Fair Value, Total	43,964	29,818
Gross Unrealized Losses, Total	$ 1,330	$ 768
Number of securities in an unrealized loss position \| security	9,292	5,105
Number of individual securities in continuous unrealized loss position for longer than twelve months \| security	1,408	949
U.S. government and government sponsored entities
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Fair Value, Less than 12 Months	$ 1,610	$ 649
Gross Unrealized Losses, Less than 12 Months	21	17
Fair Value, 12 Months or More	1	0
Gross Unrealized Losses, 12 Months or More	0	0
Fair Value, Total	1,611	649
Gross Unrealized Losses, Total	21	17
Obligations of states, municipalities and political subdivisions
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Fair Value, Less than 12 Months	464	267
Gross Unrealized Losses, Less than 12 Months	10	4
Fair Value, 12 Months or More	87	78
Gross Unrealized Losses, 12 Months or More	3	3
Fair Value, Total	551	345
Gross Unrealized Losses, Total	13	7
Non-U.S. governments
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Fair Value, Less than 12 Months	3,528	1,287
Gross Unrealized Losses, Less than 12 Months	80	28
Fair Value, 12 Months or More	460	262
Gross Unrealized Losses, 12 Months or More	84	33
Fair Value, Total	3,988	1,549
Gross Unrealized Losses, Total	164	61
Corporate debt
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Fair Value, Less than 12 Months	22,682	11,715
Gross Unrealized Losses, Less than 12 Months	715	348
Fair Value, 12 Months or More	4,413	1,283
Gross Unrealized Losses, 12 Months or More	211	81
Fair Value, Total	27,095	12,998
Gross Unrealized Losses, Total	926	429
Residential mortgage-backed securities (RMBS)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Fair Value, Less than 12 Months	3,594	3,486
Gross Unrealized Losses, Less than 12 Months	71	40
Fair Value, 12 Months or More	869	282
Gross Unrealized Losses, 12 Months or More	37	18
Fair Value, Total	4,463	3,768
Gross Unrealized Losses, Total	108	58
Commercial mortgage-backed securities (CMBS)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Fair Value, Less than 12 Months	1,474	1,644
Gross Unrealized Losses, Less than 12 Months	27	58
Fair Value, 12 Months or More	304	346
Gross Unrealized Losses, 12 Months or More	16	12
Fair Value, Total	1,778	1,990
Gross Unrealized Losses, Total	43	70
Collateralized Debt Obligations/Asset-Backed Securities (CDO/ABS)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Fair Value, Less than 12 Months	3,541	5,456
Gross Unrealized Losses, Less than 12 Months	36	81
Fair Value, 12 Months or More	937	3,063
Gross Unrealized Losses, 12 Months or More	19	45
Fair Value, Total	4,478	8,519
Gross Unrealized Losses, Total	$ 55	$ 126

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Number of investment positions in available-for-sale investments in a continuous unrealized loss position for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement.

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Number of investment positions in available-for-sale investments that have been in a continuous unrealized loss position for greater than or equal to a year for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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