v3.26.1
Derivative Instruments - Schedule of Pre-Tax Gain (Loss) Recognized in Net Income (Loss) for Effects of Derivatives not Designated as Hedges (Details) - Derivatives not designated as hedges - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Derivative [Line Items]        
Gain (loss) recognized in net income $ (55) $ (87) $ (41) $ (49)
Equity index options | Location, Statement of Income, Balance [Axis]: us-gaap:GainLossOnInvestments        
Derivative [Line Items]        
Gain (loss) recognized in net income 6 5 3 1
Financial futures | Location, Statement of Income, Balance [Axis]: us-gaap:MarketRiskBenefitChangeInFairValueGainLoss        
Derivative [Line Items]        
Gain (loss) recognized in net income (52) (50) (46) (17)
Forward bond purchase commitments | Location, Statement of Income, Balance [Axis]: us-gaap:GainLossOnInvestments        
Derivative [Line Items]        
Gain (loss) recognized in net income 3 (12) 2 (8)
Foreign currency forward contracts | Location, Statement of Income, Balance [Axis]: us-gaap:GainLossOnInvestments        
Derivative [Line Items]        
Gain (loss) recognized in net income (5) (24) 5 (24)
Fixed indexed annuity embedded derivatives | Location, Statement of Income, Balance [Axis]: us-gaap:GainLossOnInvestments        
Derivative [Line Items]        
Gain (loss) recognized in net income (6) (6) (4) (2)
Indexed universal life embedded derivatives | Location, Statement of Income, Balance [Axis]: us-gaap:GainLossOnInvestments        
Derivative [Line Items]        
Gain (loss) recognized in net income $ (1) $ 0 $ (1) $ 1