INSURANCE LIABILITIES (Details - Liability for Unpaid Losses and Loss Adjustment Expenses) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Supplementary Insurance Information, by Segment [Line Items]
Collateral Held For Deductible Recoverable Amounts	$ 8,600	$ 9,200
Allowance for credit losses for unsecured reinsurance recoverable	14	14
Gross loss reserves before reinsurance and discount, net of contractual deductible recoverable amounts due from policyholders	12,300	12,600
Reconciliation of activity in the Liability for unpaid claims and claims adjustment expense:
Liability for unpaid loss and loss adjustment expenses, beginning of period	77,720	78,328	$ 83,639
Reinsurance recoverable, balance at the beginning of the period	(34,431)	(31,069)	(31,690)
Initial allowance upon CECL adoption	0	164	0
Net Liability for unpaid loss and loss adjustment expenses, beginning of period	43,289	47,259	51,949
Losses and loss adjustment expenses incurred
Current year	16,434	16,928	17,596
Prior years, excluding discount and amortization of deferred gain	(171)	(90)	(340)
Prior years, discount charge (benefit)	(131)	587	1,063
Prior years, amortization of deferred gain on retroactive reinsurance	(190)	(237)	(219)
Total losses and loss adjustment expenses incurred	15,942	17,188	18,100
Losses and loss adjustment expenses paid
Current year	(3,868)	(4,062)	(4,894)
Prior years	(11,503)	(14,603)	(18,020)
Total losses and loss adjustment expenses paid	(15,371)	(18,665)	(22,914)
Other changes:
Foreign exchange effect	(593)	815	(6)
Allowance for credit losses	0	(15)	0
Retroactive reinsurance adjustment (net of discount)	546	361	130
Fortitude sale	0	(3,818)	0
Total other changes	(47)	(2,657)	124
Net liability for unpaid losses and loss adjustment expenses, end of period	43,813	43,289	47,259
Reinsurance recoverable, balance at the end of the period	35,213	34,431	31,069
Total, balance at the end of period	79,026	77,720	78,328
Change in discount on loss reserves ceded under retroactive reinsurance	(42)	340	469
Adjusted balance
Reconciliation of activity in the Liability for unpaid claims and claims adjustment expense:
Net Liability for unpaid loss and loss adjustment expenses, beginning of period		47,423
Other changes:
Net liability for unpaid losses and loss adjustment expenses, end of period			47,423
U.S. Asbestos | NICO
Losses and loss adjustment expenses incurred
Prior years, discount charge (benefit)	53	41	27
U.S. Workers Compensation
Losses and loss adjustment expenses incurred
Prior years, excluding discount and amortization of deferred gain	(617)	(367)	(699)
U.S. Personal Insurance
Losses and loss adjustment expenses incurred
Prior years, excluding discount and amortization of deferred gain	(412)	94	(96)
Europe Property and Special Risks
Losses and loss adjustment expenses incurred
Prior years, excluding discount and amortization of deferred gain	$ (118)	$ (155)	$ (108)