Investments (Credit Loss Expense Incurred) (Details) - Fixed Maturity AFS Securities [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Gross credit loss benefit (expense)	$ (1)	$ (2)
Net credit loss benefit (expense)	(1)	(2)
Corporate Bonds [Member]
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Gross credit loss benefit (expense)	1	$ (2)
RMBS [Member]
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Gross credit loss benefit (expense)	(1)
ABS [Member]
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Gross credit loss benefit (expense)	$ (1)