Segment Information (Reconciliation of Operating Revenues to Total Revenues) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Total revenues	$ (1,099)	$ 2,112	$ 7,501	$ 2,589
Annuities
Segment Reporting Information [Line Items]
Total revenues	922	1,048	1,935	2,015
Life
Segment Reporting Information [Line Items]
Total revenues	237	275	506	529
Run-off
Segment Reporting Information [Line Items]
Total revenues	332	527	825	1,003
Corporate & Other
Segment Reporting Information [Line Items]
Total revenues	35	33	73	70
Segment Reconciling Items
Segment Reporting Information [Line Items]
Total revenues	$ (2,625)	$ 229	$ 4,162	$ (1,028)