Segment Information (Reconciliation of Operating Revenues to Total Revenues) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information [Line Items]
Total revenues	$ 814	$ 8,600
Annuities
Segment Reporting Information [Line Items]
Total revenues	1,147	1,013
Life
Segment Reporting Information [Line Items]
Total revenues	324	269
Run-off
Segment Reporting Information [Line Items]
Total revenues	628	493
Corporate & Other
Segment Reporting Information [Line Items]
Total revenues	35	38
Segment Reconciling Items
Segment Reporting Information [Line Items]
Total revenues	$ (1,320)	$ 6,787