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Property, Plant, and Equipment - Components of property, plant, and equipment (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, at cost $ 3,058.9 $ 2,269.2
Accumulated depreciation and depletion (929.5) (932.9)
Property, plant, and equipment, net 2,129.4 1,336.3
Land    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, at cost 158.3 140.2
Mineral reserves    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, at cost 1,111.7 546.9
Buildings and improvements    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, at cost 366.4 345.6
Machinery and other    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, at cost 1,292.8 1,121.0
Construction in progress    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, at cost $ 129.7 $ 115.5