Segment Information (Reconciliation of Operating Revenues to Total Revenues) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Total revenues	$ 309	$ 3,187	$ 8,372	$ 6,248
Annuities
Segment Reporting Information [Line Items]
Total revenues	1,157	1,184	3,360	3,495
Life
Segment Reporting Information [Line Items]
Total revenues	350	320	989	953
Run-off
Segment Reporting Information [Line Items]
Total revenues	553	484	1,378	1,487
Corporate & Other
Segment Reporting Information [Line Items]
Total revenues	39	47	118	132
Segment Reconciling Items
Segment Reporting Information [Line Items]
Total revenues	$ (1,790)	$ 1,152	$ 2,527	$ 181