v3.25.2
Derivatives - Derivatives included in the Balance Sheet at fair value (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Derivatives, Fair Value [Line Items]    
Other assets $ 81 $ 82
Derivative liability 7 18
Interest rate swaps | Designated as hedging instrument    
Derivatives, Fair Value [Line Items]    
Other assets 1 1
Derivative liability $ 7 $ 14
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Other Assets Other Assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Other Liabilities Other Liabilities
Fixed maturities with embedded derivatives | Not designated as hedging instrument    
Derivatives, Fair Value [Line Items]    
Other assets $ 75 $ 81
Derivative liability $ 0 0
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Available for sale (AFS) fixed maturities  
Total return swap | Not designated as hedging instrument    
Derivatives, Fair Value [Line Items]    
Other assets $ 5 0
Derivative liability $ 0 $ 4
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Other Assets Other Assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Other Liabilities Other Liabilities