CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Change in net unrealized gains (losses) on investments, income tax expense (benefit)	$ 282	$ 599	$ (187)	$ 207
Reclassification adjustment for investment amounts included in net income, income tax expense (benefit)	(2)	6	(9)	8
Change in net expected credit losses, tax expense (benefit)	(1)	1	0	(1)
Change in accumulated (loss) gain - derivatives, income tax expense (benefit)	0	1	1	(1)
Reclassification adjustment for derivative amounts included in net income, income tax	$ 0	$ 0	$ 0	$ 1