v3.26.1
Future Policy Benefits - Schedule of Balances and Changes in the Present Value of Expected Net Premiums and Present Value (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Dec. 31, 2024
Liability for Future Policy Benefit, Expected Future Policy Benefit      
Future policy benefits $ 10,748 $ 10,755  
Traditional Life      
Liability for Future Policy Benefit, Expected Net Premium      
Balance, beginning of year 585 631  
Beginning balance at original discount rate 700 780  
Effect of actual variances from expected experience   (2) $ 1
Balance adjusted for variances from expectation   698 781
Interest accrual 3 15  
Net premiums collected (22) (96)  
Ending balance at original discount rate 679 700  
Effect of actual variances from expected experience   (2) 1
Effect of changes in discount rate assumptions (120) (115)  
Balance, end of period 559 585  
Liability for Future Policy Benefit, Expected Future Policy Benefit      
Balance, beginning of year 1,855 1,933  
Beginning balance at original discount rate 2,167 2,368  
Effect of actual variances from expected experience   (3) (21)
Balance adjusted for variances from expectation   2,164 2,347
Interest accrual 12 50  
Benefits payments (50) (230)  
Ending balance at original discount rate 2,126 2,167  
Effect of actual variances from expected experience   (3) (21)
Balance adjusted for variances from expectation   2,164 2,347
Interest accrual 12 50  
Benefits payments (50) (230)  
Effect of changes in discount rate assumptions (334) (312)  
Balance, end of period 1,792 1,855  
Future policy benefits 1,233 1,270  
Less: Reinsurance recoverable 498 489  
Net liability for future policy benefits, after reinsurance recoverable $ 735 $ 781  
Weighted-average duration of liability for future policyholder benefits (years) 6 years 7 days 6 years 10 months 2 days  
PRT      
Liability for Future Policy Benefit, Expected Future Policy Benefit      
Balance, beginning of year $ 8,112 $ 6,054  
Beginning balance at original discount rate 8,268 6,417  
Effect of changes in cash flow assumptions   0 (36)
Effect of actual variances from expected experience   1 13
Balance adjusted for variances from expectation   8,269 6,394
Issuances 333 2,206  
Interest accrual 99 331  
Benefits payments (202) (663)  
Ending balance at original discount rate 8,499 8,268  
Effect of changes in cash flow assumptions   0 (36)
Effect of actual variances from expected experience   1 13
Balance adjusted for variances from expectation   8,269 6,394
Issuances 333 2,206  
Interest accrual 99 331  
Benefits payments (202) (663)  
Effect of changes in discount rate assumptions (321) (156)  
Balance, end of period 8,178 8,112  
Net liability for future policy benefits, after reinsurance recoverable $ 8,178 $ 8,112  
Weighted-average duration of liability for future policyholder benefits (years) 7 years 7 months 13 days 7 years 9 months 18 days  
Immediate annuities      
Liability for Future Policy Benefit, Expected Future Policy Benefit      
Balance, beginning of year $ 1,276 $ 1,297  
Beginning balance at original discount rate 1,679 1,732  
Effect of actual variances from expected experience   4 (11)
Balance adjusted for variances from expectation   1,683 1,721
Issuances 5 17  
Interest accrual 13 54  
Benefits payments (28) (113)  
Ending balance at original discount rate 1,673 1,679  
Effect of actual variances from expected experience   4 (11)
Balance adjusted for variances from expectation   1,683 $ 1,721
Issuances 5 17  
Interest accrual 13 54  
Benefits payments (28) (113)  
Effect of changes in discount rate assumptions (431) (403)  
Balance, end of period 1,242 1,276  
Future policy benefits 1,242 1,276  
Less: Reinsurance recoverable 104 106  
Net liability for future policy benefits, after reinsurance recoverable $ 1,138 $ 1,170  
Weighted-average duration of liability for future policyholder benefits (years) 12 years 2 months 19 days 12 years 3 months 25 days