v3.26.1
Annuity Reinsurance - Rollforward of Liability for Future Policy Benefit (Details) - USD ($)
$ in Millions
2 Months Ended 3 Months Ended
Mar. 31, 2026
Mar. 31, 2026
Mar. 31, 2025
Jan. 21, 2026
Dec. 31, 2025
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]          
Interest accrual   $ 7 $ 0    
Future policy benefits for annuity reinsurance contracts $ 475 475     $ 0
Annuity Reinsurance          
Liability for Future Policy Benefit, Expected Future Policy Benefit [Roll Forward]          
Assured Life Re Acquisition, January 21, 2026       $ 470  
Effect of changes in cash flow assumptions       6  
Effect of actual variances from expected experience       (1)  
Ending balance at original discount rate 468 468   $ 475  
Interest accrual 4 4      
Benefit payments (4)        
Foreign exchange remeasurement (7)        
Effect of changes in discount rate assumptions 21 21      
Future policy benefits for annuity reinsurance contracts $ 447 $ 447      
Weighted-average liability duration (in years) (1) 10 years 10 years      
Weighted-average original discount rate 5.90% 5.90%      
Weighted-average current discount rate 6.30% 6.30%      
Expected future benefit payments, undiscounted $ 1,002 $ 1,002      
Expected future benefit payments, discounted $ 447 $ 447