INVESTMENTS (Details - Securities available for sale in a loss position) - Bonds available for sale $ in Millions	Mar. 31, 2020 USD ($) security	Dec. 31, 2019 USD ($) security
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Fair Value, Less than 12 Months	$ 70,954	$ 24,331
Gross Unrealized Losses, Less than 12 Months	6,027	493
Fair Value, 12 Months or More	4,895	7,362
Gross Unrealized Losses, 12 Months or More	993	322
Fair Value, Total	75,849	31,693
Gross Unrealized Losses, Total	$ 7,020	$ 815
Number of securities in an unrealized loss position \| security	14,067	5,695
Number of individual securities in continuous unrealized loss position for longer than twelve months \| security	1,041	1,254
U.S. government and government sponsored entities
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Fair Value, Less than 12 Months	$ 249	$ 1,461
Gross Unrealized Losses, Less than 12 Months	17	44
Fair Value, 12 Months or More	4	63
Gross Unrealized Losses, 12 Months or More	0	0
Fair Value, Total	253	1,524
Gross Unrealized Losses, Total	17	44
Obligations of states, municipalities and political subdivisions
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Fair Value, Less than 12 Months	1,274	672
Gross Unrealized Losses, Less than 12 Months	63	21
Fair Value, 12 Months or More	181	246
Gross Unrealized Losses, 12 Months or More	12	11
Fair Value, Total	1,455	918
Gross Unrealized Losses, Total	75	32
Non-U.S. governments
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Fair Value, Less than 12 Months	2,277	1,105
Gross Unrealized Losses, Less than 12 Months	156	12
Fair Value, 12 Months or More	197	343
Gross Unrealized Losses, 12 Months or More	62	45
Fair Value, Total	2,474	1,448
Gross Unrealized Losses, Total	218	57
Corporate debt
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Fair Value, Less than 12 Months	45,529	11,868
Gross Unrealized Losses, Less than 12 Months	4,213	319
Fair Value, 12 Months or More	1,171	2,405
Gross Unrealized Losses, 12 Months or More	485	181
Fair Value, Total	46,700	14,273
Gross Unrealized Losses, Total	4,698	500
Residential mortgage-backed securities (RMBS)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Fair Value, Less than 12 Months	5,743	3,428
Gross Unrealized Losses, Less than 12 Months	346	28
Fair Value, 12 Months or More	504	1,367
Gross Unrealized Losses, 12 Months or More	39	36
Fair Value, Total	6,247	4,795
Gross Unrealized Losses, Total	385	64
Commercial mortgage-backed securities (CMBS)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Fair Value, Less than 12 Months	4,653	1,877
Gross Unrealized Losses, Less than 12 Months	282	16
Fair Value, 12 Months or More	104	367
Gross Unrealized Losses, 12 Months or More	10	9
Fair Value, Total	4,757	2,244
Gross Unrealized Losses, Total	292	25
Collateralized Debt Obligations/Asset-Backed Securities (CDO/ABS)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Fair Value, Less than 12 Months	11,229	3,920
Gross Unrealized Losses, Less than 12 Months	950	53
Fair Value, 12 Months or More	2,734	2,571
Gross Unrealized Losses, 12 Months or More	385	40
Fair Value, Total	13,963	6,491
Gross Unrealized Losses, Total	$ 1,335	$ 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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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 less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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