v3.26.1
Investments - Scheduled maturities of available for sale fixed maturities (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Fair Value, Fiscal Year Maturity [Abstract]    
Available for sale (AFS) fixed maturities $ 11,258 $ 11,052
Fair Value Percent, Fiscal Year Maturity [Abstract]    
Average life of ABS 3 years 6 months  
Average life of RMBS 6 years  
Fixed maturities    
Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
One year or less $ 773  
After one year through five years 1,952  
After five years through ten years 1,448  
After ten years 244  
Fixed maturities amortized cost, subtotal 4,417  
Amortized cost 11,400  
Fair Value, Fiscal Year Maturity [Abstract]    
One year or less 766  
After one year through five years 1,954  
After five years through ten years 1,464  
After ten years 228  
Fixed maturities fair value, subtotal 4,412  
Available for sale (AFS) fixed maturities $ 11,258 $ 11,052
Fair Value Percent, Fiscal Year Maturity [Abstract]    
One year or less 7.00%  
After one year through five years 17.00%  
After five years through ten years 13.00%  
After ten years 2.00%  
Fixed maturities fair value, subtotal, percent 39.00%  
Fair value, total, percent 100.00%  
Collateralized loan obligations and other asset backed securities    
Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Fixed maturities without single maturity date $ 3,703  
Fair Value, Fiscal Year Maturity [Abstract]    
Fixed maturities without single maturity date $ 3,663  
Fair Value Percent, Fiscal Year Maturity [Abstract]    
Fixed maturities without single maturity date 33.00%  
Residential mortgage-backed securities    
Amortized Cost Basis, Fiscal Year Maturity [Abstract]    
Fixed maturities without single maturity date $ 3,280  
Fair Value, Fiscal Year Maturity [Abstract]    
Fixed maturities without single maturity date $ 3,183  
Fair Value Percent, Fiscal Year Maturity [Abstract]    
Fixed maturities without single maturity date 28.00%