INVESTMENTS (Details - Securities available for sale in a loss position) - Bonds available for sale $ in Millions	Sep. 30, 2020 USD ($) security	Dec. 31, 2019 USD ($) security
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Fair Value, Less than 12 Months	$ 35,078	$ 24,331
Gross Unrealized Losses, Less than 12 Months	1,221	493
Fair Value, 12 Months or More	4,991	7,362
Gross Unrealized Losses, 12 Months or More	273	322
Fair Value, Total	40,069	31,693
Gross Unrealized Losses, Total	$ 1,494	$ 815
Number of securities in an unrealized loss position \| security	7,335	5,695
Number of individual securities in continuous unrealized loss position for longer than twelve months \| security	940	1,254
U.S. government and government sponsored entities
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Fair Value, Less than 12 Months	$ 366	$ 1,461
Gross Unrealized Losses, Less than 12 Months	24	44
Fair Value, 12 Months or More	0	63
Gross Unrealized Losses, 12 Months or More	0	0
Fair Value, Total	366	1,524
Gross Unrealized Losses, Total	24	44
Obligations of states, municipalities and political subdivisions
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Fair Value, Less than 12 Months	419	672
Gross Unrealized Losses, Less than 12 Months	11	21
Fair Value, 12 Months or More	103	246
Gross Unrealized Losses, 12 Months or More	5	11
Fair Value, Total	522	918
Gross Unrealized Losses, Total	16	32
Non-U.S. governments
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Fair Value, Less than 12 Months	1,756	1,105
Gross Unrealized Losses, Less than 12 Months	56	12
Fair Value, 12 Months or More	291	343
Gross Unrealized Losses, 12 Months or More	51	45
Fair Value, Total	2,047	1,448
Gross Unrealized Losses, Total	107	57
Corporate debt
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Fair Value, Less than 12 Months	20,936	11,868
Gross Unrealized Losses, Less than 12 Months	872	319
Fair Value, 12 Months or More	1,096	2,405
Gross Unrealized Losses, 12 Months or More	110	181
Fair Value, Total	22,032	14,273
Gross Unrealized Losses, Total	982	500
Residential mortgage-backed securities (RMBS)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Fair Value, Less than 12 Months	3,594	3,428
Gross Unrealized Losses, Less than 12 Months	43	28
Fair Value, 12 Months or More	163	1,367
Gross Unrealized Losses, 12 Months or More	17	36
Fair Value, Total	3,757	4,795
Gross Unrealized Losses, Total	60	64
Commercial mortgage-backed securities (CMBS)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Fair Value, Less than 12 Months	2,068	1,877
Gross Unrealized Losses, Less than 12 Months	71	16
Fair Value, 12 Months or More	185	367
Gross Unrealized Losses, 12 Months or More	9	9
Fair Value, Total	2,253	2,244
Gross Unrealized Losses, Total	80	25
Collateralized Debt Obligations/Asset-Backed Securities (CDO/ABS)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Fair Value, Less than 12 Months	5,939	3,920
Gross Unrealized Losses, Less than 12 Months	144	53
Fair Value, 12 Months or More	3,153	2,571
Gross Unrealized Losses, 12 Months or More	81	40
Fair Value, Total	9,092	6,491
Gross Unrealized Losses, Total	$ 225	$ 93

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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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