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Property, Plant and Equipment (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Sep. 27, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Property, plant and equipment, net [Abstract]        
Property, plant and equipment, gross   $ 2,276.9 $ 2,257.0  
Less: accumulated depreciation and depletion   (1,237.3) (1,204.2)  
Property, plant and equipment, net   1,039.6 1,052.8  
Acquisition of assets $ 9.2      
Depreciation and depletion expense   77.9 82.1 $ 80.7
Mineral Rights and Reserves [Member]        
Property, plant and equipment, net [Abstract]        
Property, plant and equipment, gross   565.8 571.0  
Land [Member]        
Property, plant and equipment, net [Abstract]        
Property, plant and equipment, gross   50.9 47.5  
Buildings [Member]        
Property, plant and equipment, net [Abstract]        
Property, plant and equipment, gross   225.6 218.1  
Machinery and Equipment [Member]        
Property, plant and equipment, net [Abstract]        
Property, plant and equipment, gross   1,254.3 1,241.2  
Furniture and Fixtures and Other [Member]        
Property, plant and equipment, net [Abstract]        
Property, plant and equipment, gross   138.9 144.1  
Construction in Progress [Member]        
Property, plant and equipment, net [Abstract]        
Property, plant and equipment, gross   $ 41.4 $ 35.1