v3.26.1
Investments - Debt Securities by Maturity (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Amortized Cost    
Less than one year $ 1,165  
One year through five years 11,735  
After five years through ten years 5,898  
Greater than ten years 3,141  
Amortized Cost 29,564 $ 28,600
Fair Value    
Less than one year 1,168  
One year through five years 11,752  
After five years through ten years 5,880  
Greater than ten years 2,978  
Fair Value 29,349 28,718
Residential mortgage-backed securities    
Amortized Cost    
Debt securities, maturity, without single maturity date 1,186  
Amortized Cost 1,186 1,065
Fair Value    
Debt securities, maturity, without single maturity date 1,159  
Fair Value 1,159 1,050
Commercial mortgage-backed securities    
Amortized Cost    
Debt securities, maturity, without single maturity date 1,975  
Amortized Cost 1,975 1,974
Fair Value    
Debt securities, maturity, without single maturity date 1,948  
Fair Value 1,948 1,979
Other asset-backed securities    
Amortized Cost    
Debt securities, maturity, without single maturity date 4,464  
Amortized Cost 4,464 4,921
Fair Value    
Debt securities, maturity, without single maturity date 4,464  
Fair Value $ 4,464 $ 4,944