EQUITY (Details - Reclassification of significant items out of Accumulated other comprehensive income) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total	$ 377	$ 204
Income from continuing operations before income tax expense	4,728	2,558
Amount Reclassified from Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income from continuing operations before income tax expense	377	204
Unrealized appreciation (depreciation) of fixed maturity securities on which allowance for credit losses were taken
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total	(2)	0
Unrealized appreciation (depreciation) of fixed maturity securities on which allowance for credit losses were taken | Amount Reclassified from Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investments	(2)	0
Total	(2)	0
Unrealized appreciation (depreciation) of all other investments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total	391	214
Unrealized appreciation (depreciation) of all other investments | Amount Reclassified from Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investments	391	214
Total	391	214
Change in retirement plan liabilities adjustment
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total	(12)	(10)
Change in retirement plan liabilities adjustment | Amount Reclassified from Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total	(12)	(10)
Prior-Service Credit | Amount Reclassified from Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total	(1)	0
Actuarial Gains (Losses) | Amount Reclassified from Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total	$ (11)	$ (10)