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Property, Plant and Equipment, net (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Property, Plant and Equipment      
Total cost $ 1,615.8 $ 1,581.1  
Less: accumulated depreciation (956.9) (818.9)  
Property, plant and equipment, net 658.9 762.2  
Depreciation 71.6 81.5 $ 70.9
Finance lease obligations 100.0 101.1  
Performance Chemicals      
Property, Plant and Equipment      
Depreciation 92.6 46.3  
Machinery and equipment      
Property, Plant and Equipment      
Total cost 1,296.4 1,244.6  
Property, plant and equipment, net 20.3 22.7  
Finance lease obligations 93.7 94.2  
Buildings and leasehold improvements      
Property, Plant and Equipment      
Total cost 224.3 217.4  
Property, plant and equipment, net 29.9 32.3  
Finance lease obligations 39.2 39.2  
Land and land improvements      
Property, Plant and Equipment      
Total cost 26.2 26.3  
Construction in progress      
Property, Plant and Equipment      
Total cost $ 68.9 $ 92.8