v3.26.3
Investments in Debt and Equity Securities - Summary of Cost Basis And Fair Value Of The Available-For-Sale Debt Securities By Contractual Maturity (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Cost Basis    
Due in one year or less $ 918  
Due after one year through five years 1,717  
Due after five years through ten years 475  
Due after ten years 199  
Debt securities, available-for-sale, cost basis 4,102 $ 3,535
Fair Value    
Due in one year or less 916  
Due after one year through five years 1,690  
Due after five years through ten years 454  
Due after ten years 197  
Debt securities 3,994 3,549
U.S. governmental agency    
Cost Basis    
Debt securities, available-for-sale, cost basis 632 580
Fair Value    
Debt securities 583 572
Residential mortgage-backed securities    
Cost Basis    
Debt securities, available-for-sale, cost basis 4 2
Fair Value    
Debt securities 4 1
Commercial mortgage-backed securities    
Cost Basis    
Debt securities, available-for-sale, cost basis 157 141
Fair Value    
Debt securities $ 150 $ 139