Closed Block (Revenues and Expenses) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenues
Premiums	$ 216	$ 226	$ 434	$ 461
Net investment income	342	341	685	679
Net investment gains (losses)	(13)	5	(20)	9
Net derivative gains (losses)	2	5	7	3
Total revenues	547	577	1,106	1,152
Expenses
Policyholder benefits and claims	415	445	819	858
Policyholder dividends	86	89	176	186
Other expenses	20	22	40	44
Total expenses	521	556	1,035	1,088
Revenues, net of expenses before provision for income tax expense (benefit)	26	21	71	64
Provision for income tax expense (benefit)	5	4	15	13
Revenues, net of expenses and provision for income tax expense (benefit)	$ 21	$ 17	$ 56	$ 51