v3.25.2
Assets and Liabilities Measured at Fair Value (Details) - Recurring - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Assets and Liabilities Measured at Fair Value    
Cash equivalents $ 76 $ 89
Restricted cash equivalents 2 64
Exchangeable senior debentures 967 1,897
Quoted prices in active markets for identical assets (Level 1)    
Assets and Liabilities Measured at Fair Value    
Cash equivalents 76 89
Restricted cash equivalents 2 64
Significant other observable inputs (Level 2)    
Assets and Liabilities Measured at Fair Value    
Exchangeable senior debentures $ 967 $ 1,897