Closed Block (Revenues and Expenses) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues
Premiums	$ 1,104	$ 1,298	$ 1,498
Net investment income	1,382	1,541	1,596
Net investment gains (losses)	(51)	(36)	(25)
Net derivative gains (losses)	33	18	(17)
Total revenues	2,468	2,821	3,052
Expenses
Policyholder benefits and claims	1,890	2,150	2,330
Policyholder dividends	453	621	791
Other expenses	90	96	104
Total expenses	2,433	2,867	3,225
Revenues, net of expenses before provision for income tax expense (benefit)	35	(46)	(173)
Provision for income tax expense (benefit)	7	(10)	(36)
Revenues, net of expenses and provision for income tax expense (benefit)	$ 28	$ (36)	$ (137)