Separate Account Balances and Changes (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Separate Account, Liability [Roll Forward]
Balance, beginning of period	$ 892
Balance, end of period	899
Universal life
Separate Account, Liability [Roll Forward]
Balance, beginning of period	892	$ 959
Interest credited before policy charges	10	10
Change in unrealized gains and losses impacting separate account liabilities	0	(52)
Benefit payments	(2)	(10)
Other	(1)	(4)
Balance, end of period	899	903
Cash surrender value	$ 896	$ 869