Closed Block (Revenues and Expenses) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenues
Premiums	$ 214	$ 219	$ 648	$ 680
Net investment income	336	345	1,021	1,024
Net investment gains (losses)	1	4	(19)	13
Net derivative gains (losses)	(1)	(2)	6	1
Total revenues	550	566	1,656	1,718
Expenses
Policyholder benefits and claims	390	403	1,209	1,261
Policyholder dividends	90	89	266	275
Other expenses	21	21	61	65
Total expenses	501	513	1,536	1,601
Revenues, net of expenses before provision for income tax expense (benefit)	49	53	120	117
Provision for income tax expense (benefit)	11	11	26	24
Revenues, net of expenses and provision for income tax expense (benefit)	$ 38	$ 42	$ 94	$ 93