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Accrued Expenses
9 Months Ended
Sep. 30, 2025
Payables and Accruals [Abstract]  
Accrued Expenses Accrued Expenses
September 30,
2025
December 31,
2024
 (in millions)
Salaries, wages and employee benefits$49.5 $52.6 
Interest9.6 4.4 
Environmental8.9 11.3 
Income taxes15.3 11.5 
Taxes other than income taxes4.8 3.5 
Operating lease liabilities11.5 10.2 
Other23.2 22.5 
$122.8 $116.0