v3.26.1
Derivative Instruments - Schedule of Positions in Derivative Instruments (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Derivative [Line Items]    
Derivative assets, at fair value $ 32 $ 39
Derivative liabilities, fair value 1,065 1,129
Derivatives designated as hedges    
Derivative [Line Items]    
Derivative assets, at fair value 20 21
Derivative liabilities, fair value 879 924
Derivatives designated as hedges | Cash flow hedges    
Derivative [Line Items]    
Derivative assets, at fair value 20 21
Derivative liabilities, fair value 879 924
Derivatives designated as hedges | Cash flow hedges | Interest rate swaps | Other invested assets    
Derivative [Line Items]    
Derivative assets, at fair value 8 11
Derivatives designated as hedges | Cash flow hedges | Interest rate swaps | Other liabilities    
Derivative [Line Items]    
Derivative liabilities, fair value 797 849
Derivatives designated as hedges | Cash flow hedges | Foreign currency swaps | Other invested assets    
Derivative [Line Items]    
Derivative assets, at fair value 8 4
Derivatives designated as hedges | Cash flow hedges | Foreign currency swaps | Other liabilities    
Derivative [Line Items]    
Derivative liabilities, fair value 3 4
Derivatives designated as hedges | Cash flow hedges | Forward bond purchase commitments | Other invested assets    
Derivative [Line Items]    
Derivative assets, at fair value 4 6
Derivatives designated as hedges | Cash flow hedges | Forward bond purchase commitments | Other liabilities    
Derivative [Line Items]    
Derivative liabilities, fair value 79 71
Derivatives not designated as hedges    
Derivative [Line Items]    
Derivative assets, at fair value 12 18
Derivative liabilities, fair value 186 205
Derivatives not designated as hedges | Equity index options | Other invested assets    
Derivative [Line Items]    
Derivative assets, at fair value 12 18
Derivatives not designated as hedges | Equity index options | Other liabilities    
Derivative [Line Items]    
Derivative liabilities, fair value 0 0
Derivatives not designated as hedges | Financial futures | Other invested assets    
Derivative [Line Items]    
Derivative assets, at fair value 0 0
Derivatives not designated as hedges | Financial futures | Other liabilities    
Derivative [Line Items]    
Derivative liabilities, fair value 0 0
Derivatives not designated as hedges | Forward bond purchase commitments | Other invested assets    
Derivative [Line Items]    
Derivative assets, at fair value 0 0
Derivatives not designated as hedges | Forward bond purchase commitments | Other liabilities    
Derivative [Line Items]    
Derivative liabilities, fair value 37 36
Derivatives not designated as hedges | Foreign currency forward contracts | Other invested assets    
Derivative [Line Items]    
Derivative assets, at fair value 0 0
Derivatives not designated as hedges | Foreign currency forward contracts | Other liabilities    
Derivative [Line Items]    
Derivative liabilities, fair value 6 17
Derivatives not designated as hedges | Fixed indexed annuity embedded derivatives | Policyholder account balances:    
Derivative [Line Items]    
Derivative liabilities, fair value 130 138
Derivatives not designated as hedges | Fixed indexed annuity embedded derivatives | Other assets    
Derivative [Line Items]    
Derivative assets, at fair value 0 0
Derivatives not designated as hedges | Indexed universal life embedded derivatives | Policyholder account balances:    
Derivative [Line Items]    
Derivative liabilities, fair value 13 14
Derivatives not designated as hedges | Indexed universal life embedded derivatives | Reinsurance recoverable    
Derivative [Line Items]    
Derivative assets, at fair value $ 0 $ 0