v3.26.3
Segment Information - Geographic and Entity-wide (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Geographic Information          
Operating revenues $ 561.2 $ 498.4 $ 1,643.7 $ 1,440.2  
Long-lived assets 1,627.7   1,627.7   $ 1,670.9
U.S.          
Geographic Information          
Operating revenues 344.6 $ 280.4 1,001.3 $ 823.3  
Long-lived assets $ 911.8   $ 911.8   935.0
Foreign          
Geographic Information          
Percent of foreign revenue from Canada 54.00% 52.00% 55.00% 53.00%  
Operating revenues $ 216.6 $ 218.0 $ 642.4 $ 616.9  
Long-lived assets $ 715.9   $ 715.9   $ 735.9