Segment Information (Reconciliation of Operating Revenues to Total Revenues) (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Total revenues	$ 1,102	$ 1,808	$ 6,162	$ 4,110
Annuities
Segment Reporting Information [Line Items]
Total revenues	1,058	1,067
Life
Segment Reporting Information [Line Items]
Total revenues	248	300
Run-off
Segment Reporting Information [Line Items]
Total revenues	380	534
Corporate & Other
Segment Reporting Information [Line Items]
Total revenues	139	41
Segment Reconciling Items
Segment Reporting Information [Line Items]
Total revenues	$ (723)	$ (134)