INSURANCE LIABILITIES (Details - Discounting of Reserves) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Discounting of Reserves [Line Items]
Workers Compensation Tabular Discount Amount	$ 303		$ 303		$ 285
Workers Compensation Non Tabular Discount Amount	488		488		440
U.S. Workers' compensation	1,646		1,646		1,636
Retroactive Reinsurance	(855)		(855)		(911)
Total reserve discount	791		791		725
Current accident year	12	$ 18	26	$ 38
Accretion and other adjustments to prior year discount	(34)	(34)	(16)	(110)
Effect of interest rate changes	0	0	0	0
Net loss reserve discount charge	(22)	(16)	10	(72)
Change in discount on loss reserves ceded under retroactive reinsurance	17	(14)	56	58
Net change in total reserve discount	(5)	(30)	66	(14)
NICO
Discounting of Reserves [Line Items]
Amortization of deferred gain on retroactive reinsurance	21	65	76	132
Fortitude [Member]
Discounting of Reserves [Line Items]
Total reserve discount	$ 508		$ 508		$ 493
Percent of discount ceded on sale	100.00%		100.00%		100.00%
North America Commercial Insurance
Discounting of Reserves [Line Items]
U.S. Workers' compensation	$ 1,646		$ 1,646		$ 1,636
Retroactive Reinsurance	(855)		(855)		(911)
Total reserve discount	791		791		725
Current accident year	12	18	26	38
Accretion and other adjustments to prior year discount	(34)	(25)	(16)	(92)
Effect of interest rate changes	0	0	0	0
Net loss reserve discount charge	(22)	(7)	10	(54)
Change in discount on loss reserves ceded under retroactive reinsurance	17	(14)	56	58
Net change in total reserve discount	(5)	(21)	66	4
Other Operations Run-Off
Discounting of Reserves [Line Items]
U.S. Workers' compensation	0		0		0
Retroactive Reinsurance	0		0		0
Total reserve discount	0		0		0
Current accident year	0	0	0	0
Accretion and other adjustments to prior year discount	0	(9)	0	(18)
Effect of interest rate changes	0	0	0	0
Net loss reserve discount charge	0	(9)	0	(18)
Change in discount on loss reserves ceded under retroactive reinsurance	0	0	0	0
Net change in total reserve discount	0	(9)	$ 0	(18)
New York
Discounting of Reserves [Line Items]
Nontabular discount rate			5.00%
United Kingdom
Discounting of Reserves [Line Items]
Net loss reserve discount charge			$ 159		$ 151
Net change in total reserve discount	$ 2	$ (6)	$ 9	$ (8)