v3.26.3
Debt - Schedule of Long-term Debt, Net of an Unamortized Discount and Debt Issuance Costs (Details) - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Long-term debt, net of an unamortized discount and debt issuance costs [Abstract]      
Finance leases $ 40   $ 39
Long-term debt 3,183   3,204
Less: Long-term debt due within one year (39)   (39)
Debt issuance costs (28)   (33)
Long-term debt, net 3,116   3,132
2024 Term Loan Facility      
Long-term debt, net of an unamortized discount and debt issuance costs [Abstract]      
Original Principal 741    
Long-term debt, gross $ 727   731
Average effective interest rate (in percent)   6.60%  
Basis spread on variable rate (in percent) 2.25%    
2024-B Term Loan Facility      
Long-term debt, net of an unamortized discount and debt issuance costs [Abstract]      
Original Principal $ 902    
Long-term debt, gross $ 881   887
Average effective interest rate (in percent) 6.10% 6.50%  
Basis spread on variable rate (in percent) 2.50%    
Senior Notes due 2029      
Long-term debt, net of an unamortized discount and debt issuance costs [Abstract]      
Original Principal $ 1,075    
Annual Interest Rate 4.625%    
Long-term debt, gross $ 1,075   1,075
Senior Secured Notes due 2030      
Long-term debt, net of an unamortized discount and debt issuance costs [Abstract]      
Original Principal $ 400    
Annual Interest Rate 9.125%    
Long-term debt, gross $ 400   400
RMB Term Loan Facility      
Long-term debt, net of an unamortized discount and debt issuance costs [Abstract]      
Original Principal 64    
Long-term debt, gross $ 50   57
Average effective interest rate (in percent) 9.20% 9.20%  
Basis spread on variable rate (in percent) 2.35%    
Australian Government Loan      
Long-term debt, net of an unamortized discount and debt issuance costs [Abstract]      
Long-term debt, gross $ 2   2
MGT Loan      
Long-term debt, net of an unamortized discount and debt issuance costs [Abstract]      
Original Principal 36    
Long-term debt, gross $ 8   $ 13
Average effective interest rate (in percent) 6.20% 6.10%  
Standard Bank Term Loan Facility      
Long-term debt, net of an unamortized discount and debt issuance costs [Abstract]      
Average effective interest rate (in percent) 6.30%