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Property, Plant and Equipment
 12 Months Ended
Dec. 31, 2023
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Property, Plant and Equipment
Property, plant and equipment, at December 31, consist of the following:
 20232022
Land and improvements$105.1 $39.8 
Mineral Reserves57.6 — 
Buildings and improvements328.8 305.7 
Machinery and equipment1,580.7 1,495.3 
Construction in progress160.3 59.0 
 2,232.5 1,899.8 
Less accumulated depreciation, amortization and depletion(1,228.3)(1,155.4)
Property, plant and equipment - net$1,004.2 $744.4 
For the years ended December 31, 2023, 2022 and 2021, we recorded depreciation, amortization and depletion expense of $74.7 million, $73.4 million, and $82.6 million, respectively.