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Property, Plant, and Equipment
 3 Months Ended
Mar. 31, 2023
Property, Plant and Equipment [Abstract]  
Property, Plant, and Equipment Property, Plant, and Equipment
The following table summarizes the components of property, plant, and equipment as of March 31, 2023 and December 31, 2022.
March 31,
2023		December 31,
2022
 (in millions)
Land$139.1 $138.7 
Mineral reserves507.0 506.3 
Buildings and improvements310.6 308.3 
Machinery and other996.3 973.9 
Construction in progress98.1 83.7 
2,051.1 2,010.9 
Less accumulated depreciation and depletion(841.4)(811.3)
$1,209.7 $1,199.6