v3.26.1
Investments - Debt Maturities (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Available-for-sale Securities Including Securities Pledged [Line Items]    
One year or less, Amortized Cost $ 661  
After one year through five years, Amortized Cost 2,709  
After five years through ten years, Amortized Cost 2,921  
After ten years, Amortized Cost 10,763  
Debt Securities, Available-for-Sale, Amortized Cost 21,969 $ 22,083
One year or less, Fair Value 661  
After one year through five years, Fair Value 2,680  
After five years through ten years, Fair Value 2,854  
After ten years, Fair Value 9,652  
Mortgage-backed securities    
Available-for-sale Securities Including Securities Pledged [Line Items]    
Without single maturity date, Amortized Cost 5,055  
Without single maturity date, Fair Value 4,751  
Other asset-backed securities    
Available-for-sale Securities Including Securities Pledged [Line Items]    
Without single maturity date, Amortized Cost 1,926  
Debt Securities, Available-for-Sale, Amortized Cost 1,926 1,977
Without single maturity date, Fair Value 1,921  
Debt Securities, Available-for-Sale, Excluding Accrued Interest 1,921 1,975
Fixed maturities    
Available-for-sale Securities Including Securities Pledged [Line Items]    
Debt Securities, Available-for-Sale, Amortized Cost 24,035 24,173
Debt Securities, Available-for-Sale, Excluding Accrued Interest $ 22,519 $ 22,838