v3.26.1
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
Jun. 30, 2026
Dec. 31, 2025
Cost Basis    
Due in one year or less $ 882  
Due after one year through five years 1,687  
Due after five years through ten years 441  
Due after ten years 213  
Debt securities, available-for-sale, cost basis 3,971 $ 3,535
Fair Value    
Due in one year or less 892  
Due after one year through five years 1,685  
Due after five years through ten years 439  
Due after ten years 213  
Debt securities 3,956 3,549
U.S. governmental agency    
Cost Basis    
Debt securities, available-for-sale, cost basis 586 580
Fair Value    
Debt securities 569 572
Residential mortgage-backed securities    
Cost Basis    
Debt securities, available-for-sale, cost basis 5 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 $ 154 $ 139