Closed Block (Revenues and Expenses) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenues
Premiums	$ 226	$ 274	$ 461	$ 549
Net investment income	341	352	679	713
Net investment gains (losses)	5	(16)	9	(48)
Net derivative gains (losses)	5	8	3	11
Total revenues	577	618	1,152	1,225
Expenses
Policyholder benefits and claims	445	462	858	945
Policyholder dividends	89	128	186	262
Other expenses	22	23	44	46
Total expenses	556	613	1,088	1,253
Revenues, net of expenses before provision for income tax expense (benefit)	21	5	64	(28)
Provision for income tax expense (benefit)	4	1	13	(6)
Revenues, net of expenses and provision for income tax expense (benefit)	$ 17	$ 4	$ 51	$ (22)