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Accounts Payable and Accrued Expenses (Tables)
12 Months Ended
Dec. 31, 2024
Payables and Accruals [Abstract]  
Accounts payable and accrued expenses
Accounts payable and accrued expenses consisted of the following:
December 31,
 20242023
 (Dollars in millions)
Trade accounts payable$228.4 $275.8 
Accrued payroll and related benefits176.8 174.3 
Other accrued expenses130.1 140.8 
Accrued taxes other than income66.9 59.3 
Asset retirement obligations55.9 54.2 
Accrued royalties50.7 71.2 
Operating lease liabilities32.4 17.3 
Accrued insurance29.8 32.7 
Workers’ compensation obligations11.3 8.7 
Income taxes payable10.7 120.8 
Accrued litigation reserve10.0 1.6 
Accrued interest4.7 3.6 
Liabilities associated with discontinued operations4.0 5.2 
Accounts payable and accrued expenses$811.7 $965.5