v3.26.1
Derivative Instruments - Schedule of Gains and Losses, and Change in Fair Value of Derivatives (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Derivative Investments, Excluding Non-Qualified Voluntary Deferred Compensation        
Derivative Instruments, Gain (Loss) [Line Items]        
Net gains (losses) on derivative instruments $ (2,583) $ (2,930) $ (2,235) $ (1,739)
Derivatives excluding funds withheld under reinsurance treaties and non-qualified voluntary deferred compensation plan        
Derivative Instruments, Gain (Loss) [Line Items]        
Net gains (losses) on derivative instruments (2,466) (2,751) (2,136) (1,342)
Derivatives related to funds withheld under reinsurance treaties        
Derivative Instruments, Gain (Loss) [Line Items]        
Net gains (losses) on derivative instruments (117) (179) (99) (397)
Derivatives related to non-qualified voluntary deferred compensation plan        
Derivative Instruments, Gain (Loss) [Line Items]        
Net gains (losses) on derivative instruments 40 0 31 0
Cross-currency swaps | Derivatives excluding funds withheld under reinsurance treaties and non-qualified voluntary deferred compensation plan        
Derivative Instruments, Gain (Loss) [Line Items]        
Net gains (losses) on derivative instruments (13) 58 5 85
Cross-currency swaps | Derivatives related to funds withheld under reinsurance treaties        
Derivative Instruments, Gain (Loss) [Line Items]        
Net gains (losses) on derivative instruments (2) (11) 0 (10)
Equity index call options | Derivatives excluding funds withheld under reinsurance treaties and non-qualified voluntary deferred compensation plan        
Derivative Instruments, Gain (Loss) [Line Items]        
Net gains (losses) on derivative instruments (7) 0 (7) 0
Equity index futures | Derivatives excluding funds withheld under reinsurance treaties and non-qualified voluntary deferred compensation plan        
Derivative Instruments, Gain (Loss) [Line Items]        
Net gains (losses) on derivative instruments 1,241 (613) 808 (466)
Equity index futures | Derivatives related to non-qualified voluntary deferred compensation plan        
Derivative Instruments, Gain (Loss) [Line Items]        
Net gains (losses) on derivative instruments 15 0 9 0
Equity index put options | Derivatives excluding funds withheld under reinsurance treaties and non-qualified voluntary deferred compensation plan        
Derivative Instruments, Gain (Loss) [Line Items]        
Net gains (losses) on derivative instruments (396) (419) (373) (311)
Interest rate swaps | Derivatives excluding funds withheld under reinsurance treaties and non-qualified voluntary deferred compensation plan        
Derivative Instruments, Gain (Loss) [Line Items]        
Net gains (losses) on derivative instruments 42 9 66 37
Interest rate futures | Derivatives excluding funds withheld under reinsurance treaties and non-qualified voluntary deferred compensation plan        
Derivative Instruments, Gain (Loss) [Line Items]        
Net gains (losses) on derivative instruments (9) (547) (115) (71)
Total return swaps | Derivatives excluding funds withheld under reinsurance treaties and non-qualified voluntary deferred compensation plan        
Derivative Instruments, Gain (Loss) [Line Items]        
Net gains (losses) on derivative instruments (754) (176) (647) (64)
Total return swaps | Derivatives related to non-qualified voluntary deferred compensation plan        
Derivative Instruments, Gain (Loss) [Line Items]        
Net gains (losses) on derivative instruments 25 0 22 0
Bond forwards | Derivatives excluding funds withheld under reinsurance treaties and non-qualified voluntary deferred compensation plan        
Derivative Instruments, Gain (Loss) [Line Items]        
Net gains (losses) on derivative instruments 51 (67) (16) 48
Fixed index annuity embedded derivatives | Derivatives excluding funds withheld under reinsurance treaties and non-qualified voluntary deferred compensation plan        
Derivative Instruments, Gain (Loss) [Line Items]        
Net gains (losses) on derivative instruments (32) (10) (26) (11)
Registered index linked annuity embedded derivatives | Derivatives excluding funds withheld under reinsurance treaties and non-qualified voluntary deferred compensation plan        
Derivative Instruments, Gain (Loss) [Line Items]        
Net gains (losses) on derivative instruments (2,589) (986) (1,831) (589)
Cross-currency forwards | Derivatives related to funds withheld under reinsurance treaties        
Derivative Instruments, Gain (Loss) [Line Items]        
Net gains (losses) on derivative instruments 0 (38) 2 (56)
Funds withheld embedded derivative | Derivatives related to funds withheld under reinsurance treaties        
Derivative Instruments, Gain (Loss) [Line Items]        
Net gains (losses) on derivative instruments $ (115) $ (130) $ (101) $ (331)