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, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues
Net investment income	$ 2,159	$ 1,935	$ 2,118
Net investment gains (losses)	120	(54)	29
Total revenues	11,908	10,808	10,767
Expenses
Interest	113	122	131
Income tax benefit	(282)	(131)	(223)
Net income	1,202	690	1,000
Total comprehensive income	719	1,442	1,929
Parent Company
Revenues
Net investment income	0	3	13
Net investment gains (losses)	0	(20)	(21)
Total revenues	0	(17)	(8)
Expenses
Administrative and general	1	1	1
Interest	112	122	131
Total expenses	113	123	132
Loss from operations before income taxes and equity in net income of subsidiaries	(113)	(140)	(140)
Income tax benefit	11	18	21
Loss before equity in net income of subsidiaries	(102)	(122)	(119)
Equity in net income of subsidiaries	1,304	812	1,119
Net income	1,202	690	1,000
Equity in other comprehensive (loss) income of subsidiaries	(483)	752	929
Total comprehensive income	$ 719	$ 1,442	$ 1,929