Future Policy Benefits - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2022
Insurance [Abstract]
Liability for Future Policy Benefit, Adverse Development, Expense, Loss At Issue	$ 91	$ 99
Liability for Future Policy Benefit, Adverse Development, Expense, Loss At Issue, Net Remeasurement Loss	$ 47	$ 44