Separate Account Balances and Changes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Separate Account, Liability [Roll Forward]
Balance, beginning of period			$ 892
Balance, end of period	$ 911		911
Universal life
Separate Account, Liability [Roll Forward]
Balance, beginning of period	899	$ 903	892	$ 959
Interest credited before policy charges	10	10	20	20
Change in unrealized gains and losses impacting separate account liabilities	0	(53)	0	(105)
Benefit payments	(1)	0	(3)	(10)
Other	3	0	2	(4)
Balance, end of period	911	860	911	860
Cash surrender value	$ 906	$ 878	$ 906	$ 878