Schedule II. Condensed Financial Information of Registrant (Parent Company) (Schedule of Condensed Financial Information of Registrant, Statements of Operations and Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues
Net investment income	$ 1,805	$ 2,159	$ 1,935
Net investment (losses) gains	(199)	120	(54)
Total revenues	11,879	11,908	10,808
Expenses
Interest	112	113	122
Income tax benefit	(187)	(282)	(131)
Net income	894	1,202	690
Total comprehensive (loss) income	(2,983)	719	1,442
Parent Company
Revenues
Net investment income	8	0	3
Net investment (losses) gains	0	0	(20)
Total revenues	8	0	(17)
Expenses
Administrative and general	1	1	1
Interest	112	112	122
Total expenses	113	113	123
Loss from operations before income taxes and equity in net income of subsidiaries	(105)	(113)	(140)
Income tax benefit	6	11	18
Loss before equity in net income of subsidiaries	(99)	(102)	(122)
Equity in net income of subsidiaries	993	1,304	812
Net income	894	1,202	690
Equity in other comprehensive (loss) income of subsidiaries	(3,877)	(483)	752
Total comprehensive (loss) income	$ (2,983)	$ 719	$ 1,442