v3.25.3
Basis of Presentation (Schedule of Cash Activity) (Details) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Sep. 30, 2024
Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Cash and cash equivalents $ 564 $ 534 $ 602  
Program cash 71 60 44  
Restricted cash 4   3  
Total cash and cash equivalents, program and restricted cash $ 639 $ 597 $ 649 $ 644