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Property, Plant and Equipment
 12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Property, Plant and Equipment
Property, plant and equipment, at December 31, consist of the following:
 20212020
Land and improvements$40.1 $40.1 
Buildings and improvements341.1 340.1 
Machinery and equipment1,522.1 1,506.5 
Construction in progress89.6 15.8 
 1,992.9 1,902.5 
Less accumulated depreciation(1,100.4)(1,022.1)
Property, plant and equipment - net$892.5 $880.4 
For the years ended December 31, 2021, 2020 and 2019, we recorded depreciation and amortization expense of $82.6 million, $83.0 million, and $83.2 million, respectively.