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Property, Plant, and Equipment (Tables)
12 Months Ended
Dec. 31, 2025
Property, Plant and Equipment [Abstract]  
Components of property, plant, and equipment
The following table summarizes the components of property, plant, and equipment as of December 31, 2025 and 2024.
December 31,
2025
December 31,
2024
 (in millions)
Land$197.0 $158.3 
Mineral reserves1,114.7 1,111.7 
Buildings and improvements443.5 366.4 
Machinery and other1,292.9 1,292.8 
Construction in progress136.5 129.7 
3,184.6 3,058.9 
Less accumulated depreciation and depletion(1,086.8)(929.5)
$2,097.8 $2,129.4