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	3 Months Ended				12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022		Dec. 31, 2021
Revenues
Net investment income					$ 2,264	$ 1,805	[1]	$ 2,159	[1]
Total revenues					13,299	11,879	[1]	11,908	[1]
Expenses
Interest					127	112	[1]	113	[1]
Income tax benefit					(313)	(132)	[1]	(278)	[1]
Net income	$ 239	$ (42)	$ 190	$ 295	1,205	682	[1]	1,184	[1]
Other comprehensive income (loss)	$ 405	$ (840)	$ (783)	$ (1,020)	926	(2,238)	[1]	177	[1]
Total comprehensive income (loss)					2,131	(1,556)	[1]	1,361	[1]
Parent Company
Revenues
Net investment income					41	8		0
Total revenues					41	8		0
Expenses
Administrative and general					2	1		1
Interest					126	112		112
Total expenses					128	113		113
Loss from operations before income taxes and equity in net income of subsidiaries					(87)	(105)		(113)
Income tax benefit					4	6		11
Loss before equity in net income of subsidiaries					(83)	(99)		(102)
Equity in net income of subsidiaries					1,288	781		1,286
Net income					1,205	682		1,184
Total comprehensive income (loss)					$ 2,131	$ (1,556)		$ 1,361

[1] As of January 1, 2023, the Company adopted ASU 2018-12, Financial Services-Insurance (Topic 944): Targeted Improvements to the Accounting for Long-Duration Contracts (ASU 2018-12) using the modified retrospective method applied as of the transition date of January 1, 2021. Prior period amounts in the financial statements have been adjusted to reflect application of the new guidance. See Note A to the Consolidated Financial Statements for additional information.