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Segment Information (Reconciliation of Operating Revenues to Total Revenues) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Segment Reporting Information [Line Items]    
Total revenues $ 74 $ 1,284
Segment Reconciling Items    
Segment Reporting Information [Line Items]    
Total revenues (1,976) (709)
Operating Segments | Annuities    
Segment Reporting Information [Line Items]    
Total revenues 1,304 1,170
Operating Segments | Life    
Segment Reporting Information [Line Items]    
Total revenues 217 304
Operating Segments | Run-off    
Segment Reporting Information [Line Items]    
Total revenues 356 380
Operating Segments | Corporate & Other    
Segment Reporting Information [Line Items]    
Total revenues $ 173 $ 139