Closed Block (Closed Block Revenues and Benefits 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	$ 433	$ 430	$ 842	$ 836
Net investment income	506	498	1,019	977
Realized investment gains (losses), net	(174)	(113)	(299)	(130)
Other income (loss)	43	140	207	240
Total Closed Block revenues	808	955	1,769	1,923
Benefits and Expenses
Policyholders’ benefits	604	610	1,188	1,182
Interest credited to policyholders’ account balances	29	29	59	59
Dividends to policyholders	162	292	437	594
General and administrative expenses	67	71	134	144
Total Closed Block benefits and expenses	862	1,002	1,818	1,979
Closed Block revenues, net of Closed Block benefits and expenses, before income taxes	(54)	(47)	(49)	(56)
Income tax expense (benefit)	(73)	(54)	(88)	(86)
Closed Block revenues, net of Closed Block benefits and expenses and income taxes	$ 19	$ 7	$ 39	$ 30