Investments (Components of Net Investment Gains (Losses)) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Net Investment Gains (Losses) [Line Items]
Net investment gains (losses)	$ (40)	$ (16)	$ (171)	$ (37)
Fixed maturity securities
Net Investment Gains (Losses) [Line Items]
Net investment gains (losses)	(37)	0	(138)	(23)
Equity securities
Net Investment Gains (Losses) [Line Items]
Net investment gains (losses)	(1)	(2)	(11)	1
Mortgage loans
Net Investment Gains (Losses) [Line Items]
Net investment gains (losses)	2	(5)	(1)	(6)
Limited partnerships and LLCs
Net Investment Gains (Losses) [Line Items]
Net investment gains (losses)	(4)	0	(21)	1
Other
Net Investment Gains (Losses) [Line Items]
Net investment gains (losses)	$ 0	$ (9)	$ 0	$ (10)