v3.26.1
Basis of Presentation - Schedule of Restrictions on Cash and Cash Equivalents (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Jun. 30, 2025
Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Cash and cash equivalents $ 558 $ 519 $ 541  
Program cash 126 94 57  
Restricted cash 3   5  
Total cash and cash equivalents, program and restricted cash $ 687 $ 618 $ 603 $ 597