CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 49	$ 131	$ 313	$ 144
Other comprehensive income (loss):
Change in net unrealized gains (losses) on investments, net of income tax: (three and nine months 2021 - $(70) and $(257); three and nine months 2020 - $128 and $336)	(263)	482	(967)	1,264
Reclassification adjustment for investment amounts included in net income, net of income tax: (three and nine months 2021 - $(1) and $(10); three and nine months 2020 - $7 and $16)	(5)	28	(39)	60
Change in net expected credit losses, net of income tax: (three and nine months 2021 - $— and $—; three and nine months 2020 -$8 and $7)	(1)	28	(1)	26
Change in accumulated (loss) gain - derivatives, net of income tax: (three and nine months 2021 - $— and $—; three and nine months 2020 - $— and $—)	(2)	1	1	(1)
Reclassification adjustment for derivative amounts included in net income, net of income tax: (three and nine months 2021 - $— and $—; three and nine months 2020 - $— and $—)	1	0	1	2
Total other comprehensive income (loss)	(270)	539	(1,005)	1,351
Total comprehensive income (loss)	$ (221)	$ 670	$ (692)	$ 1,495