XML 57 R42.htm IDEA: XBRL DOCUMENT v3.23.1
Property, Plant, and Equipment - Components of property, plant, and equipment (Details) - USD ($)
$ in Millions
Mar. 31, 2023
Dec. 31, 2022
Components of property, plant, and equipment    
Property, plant and equipment, at cost $ 2,051.1 $ 2,010.9
Less accumulated depreciation (841.4) (811.3)
Property, plant, and equipment, net 1,209.7 [1] 1,199.6
Land    
Components of property, plant, and equipment    
Property, plant and equipment, at cost 139.1 138.7
Mineral reserves    
Components of property, plant, and equipment    
Property, plant and equipment, at cost 507.0 506.3
Buildings and improvements    
Components of property, plant, and equipment    
Property, plant and equipment, at cost 310.6 308.3
Machinery and other    
Components of property, plant, and equipment    
Property, plant and equipment, at cost 996.3 973.9
Construction in progress    
Components of property, plant, and equipment    
Property, plant and equipment, at cost $ 98.1 $ 83.7
[1] (unaudited)