Investments (Credit Loss Expense Incurred) (Details) - Fixed Maturity AFS Securities [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Gross credit loss benefit (expense)	$ 1	$ (3)	$ (1)	$ (21)
Associated amortization of DAC, VOBA, DSI and DFEL		1		1
Net credit loss benefit (expense)	1	(2)	(1)	(20)
Corporate Bonds [Member]
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Gross credit loss benefit (expense)	$ 1	(1)	$ (1)	(19)
RMBS [Member]
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Gross credit loss benefit (expense)		(1)		(1)
ABS [Member]
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Gross credit loss benefit (expense)		$ (1)		$ (1)