v3.26.1
Derivative Instruments - Schedule of Positions in Derivative Instruments (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Derivative [Line Items]    
Derivative assets, at fair value $ 36 $ 39
Derivative liabilities, fair value 1,040 1,129
Derivatives designated as hedges    
Derivative [Line Items]    
Derivative assets, at fair value 21 21
Derivative liabilities, fair value 848 924
Derivatives designated as hedges | Cash flow hedges    
Derivative [Line Items]    
Derivative assets, at fair value 21 21
Derivative liabilities, fair value 848 924
Derivatives designated as hedges | Cash flow hedges | Interest rate swaps | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherInvestments    
Derivative [Line Items]    
Derivative assets, at fair value 8 11
Derivatives designated as hedges | Cash flow hedges | Interest rate swaps | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherLiabilities    
Derivative [Line Items]    
Derivative liabilities, fair value 779 849
Derivatives designated as hedges | Cash flow hedges | Foreign currency swaps | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherInvestments    
Derivative [Line Items]    
Derivative assets, at fair value 6 4
Derivatives designated as hedges | Cash flow hedges | Foreign currency swaps | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherLiabilities    
Derivative [Line Items]    
Derivative liabilities, fair value 3 4
Derivatives designated as hedges | Cash flow hedges | Forward bond purchase commitments | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherInvestments    
Derivative [Line Items]    
Derivative assets, at fair value 7 6
Derivatives designated as hedges | Cash flow hedges | Forward bond purchase commitments | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherLiabilities    
Derivative [Line Items]    
Derivative liabilities, fair value 66 71
Derivatives not designated as hedges    
Derivative [Line Items]    
Derivative assets, at fair value 15 18
Derivative liabilities, fair value 192 205
Derivatives not designated as hedges | Equity index options | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherInvestments    
Derivative [Line Items]    
Derivative assets, at fair value 15 18
Derivatives not designated as hedges | Equity index options | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherLiabilities    
Derivative [Line Items]    
Derivative liabilities, fair value 0 0
Derivatives not designated as hedges | Financial futures | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherInvestments    
Derivative [Line Items]    
Derivative assets, at fair value 0 0
Derivatives not designated as hedges | Financial futures | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherLiabilities    
Derivative [Line Items]    
Derivative liabilities, fair value 0 0
Derivatives not designated as hedges | Forward bond purchase commitments | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherInvestments    
Derivative [Line Items]    
Derivative assets, at fair value 0 0
Derivatives not designated as hedges | Forward bond purchase commitments | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherLiabilities    
Derivative [Line Items]    
Derivative liabilities, fair value 34 36
Derivatives not designated as hedges | Foreign currency forward contracts | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherInvestments    
Derivative [Line Items]    
Derivative assets, at fair value 0 0
Derivatives not designated as hedges | Foreign currency forward contracts | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherLiabilities    
Derivative [Line Items]    
Derivative liabilities, fair value 12 17
Derivatives not designated as hedges | Fixed indexed annuity embedded derivatives | Location, Statement of Financial Position, Balance [Axis]: us-gaap:OtherAssets    
Derivative [Line Items]    
Derivative assets, at fair value 0 0
Derivatives not designated as hedges | Fixed indexed annuity embedded derivatives | Location, Statement of Financial Position, Balance [Axis]: us-gaap:PolicyholderContractDeposits    
Derivative [Line Items]    
Derivative liabilities, fair value 132 138
Derivatives not designated as hedges | Indexed universal life embedded derivatives | Location, Statement of Financial Position, Balance [Axis]: us-gaap:PolicyholderContractDeposits    
Derivative [Line Items]    
Derivative liabilities, fair value 14 14
Derivatives not designated as hedges | Indexed universal life embedded derivatives | Location, Statement of Financial Position, Balance [Axis]: us-gaap:ReinsuranceRecoverablesGross    
Derivative [Line Items]    
Derivative assets, at fair value $ 0 $ 0