v3.26.1
Segment Information - Geographic and Entity-wide (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Geographic Information          
Operating revenues $ 554.6 $ 481.7 $ 1,082.5 $ 941.8  
Long-lived assets 1,638.9   1,638.9   $ 1,670.9
U.S.          
Geographic Information          
Operating revenues 339.2 $ 272.6 656.7 $ 542.9  
Long-lived assets $ 919.4   $ 919.4   935.0
Foreign          
Geographic Information          
Percent of foreign revenue from Canada 58.00% 53.00% 56.00% 53.00%  
Operating revenues $ 215.4 $ 209.1 $ 425.8 $ 398.9  
Long-lived assets $ 719.5   $ 719.5   $ 735.9