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	$ (922)	$ 2,370	$ 8,063	$ 3,061
Annuities
Segment Reporting Information [Line Items]
Total revenues	1,052	1,194	2,203	2,311
Life
Segment Reporting Information [Line Items]
Total revenues	285	330	639	633
Run-off
Segment Reporting Information [Line Items]
Total revenues	332	527	825	1,003
Corporate & Other
Segment Reporting Information [Line Items]
Total revenues	37	42	79	85
Segment Reconciling Items
Segment Reporting Information [Line Items]
Total revenues	$ (2,628)	$ 277	$ 4,317	$ (971)