v3.26.3
Long-duration Contracts - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Additional Liability, Long-Duration Insurance [Line Items]        
Favorable (unfavorable) movements     $ (4,999) $ (775)
Benefit payments     (3,559) (3,406)
Remeasurement gains (losses) on future policy benefits related to discount rate $ 2,518 $ (235) 3,228 (808)
Interest accrual     1,411 1,366
Foreign exchange       244
Issuances     450  
Liability increase (decrease)     14 45
Market risk benefit, period increase (decrease)     (219) 897
Effect of changes in interest rates     (840) 116
Issuances     291 346
Interest accrual     156 143
Benefit payments     76 51
Attributed fees collected     324 289
Payout annuities with life contingencies        
Additional Liability, Long-Duration Insurance [Line Items]        
Benefit payments     (3,247) (3,329)
Interest accrual     1,286 1,311
Foreign exchange     (14) 58
Issuances     $ 441 $ 205