Segment Information (Reconciliation of Operating Revenues to Total Revenues) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Total revenues	$ 5,627	$ 8,122	$ 5,798
Annuities
Segment Reporting Information [Line Items]
Total revenues	4,062	3,921	3,721
Life
Segment Reporting Information [Line Items]
Total revenues	1,115	1,160	1,036
Run-off
Segment Reporting Information [Line Items]
Total revenues	2,009	2,112	2,148
Corporate & Other
Segment Reporting Information [Line Items]
Total revenues	145	147	250
Segment Reconciling Items
Segment Reporting Information [Line Items]
Total revenues	$ (1,704)	$ 782	$ (1,357)