Separate Account Balances and Changes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Separate Account, Liability [Roll Forward]
Balance, beginning of period			$ 892
Balance, end of period	$ 918		918
Universal life
Separate Account, Liability [Roll Forward]
Balance, beginning of period	911	$ 860	892	$ 959
Interest credited before policy charges	11	9	31	29
Change in unrealized gains and losses impacting separate accounts liabilities	0	20	0	(85)
Benefit payments	(3)	0	(6)	(10)
Other	(1)	(1)	1	(5)
Balance, end of period	918	888	918	888
Cash surrender value	$ 912	$ 886	$ 912	$ 886