Investments (Components of Net Investment Gains (Losses)) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net Investment Gains (Losses) [Line Items]
Net investment gains (losses)	$ (64)	$ (33)	$ (131)	$ (21)
Fixed maturity securities
Net Investment Gains (Losses) [Line Items]
Net investment gains (losses)	(60)	(31)	(101)	(23)
Equity securities
Net Investment Gains (Losses) [Line Items]
Net investment gains (losses)	(4)	3	(10)	3
Mortgage loans
Net Investment Gains (Losses) [Line Items]
Net investment gains (losses)	1	(5)	(3)	(1)
Limited partnerships and LLCs
Net Investment Gains (Losses) [Line Items]
Net investment gains (losses)	(1)	1	(17)	1
Other
Net Investment Gains (Losses) [Line Items]
Net investment gains (losses)	$ 0	$ (1)	$ 0	$ (1)