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Property, Plant and Equipment
12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
7.Property, Plant and Equipment
 As of December 31,
 20212020
 (in millions)
Land$11.5 $11.0 
Buildings and improvements116.5 108.9 
Machinery and equipment329.9 329.4 
Construction in progress11.7 11.5 
469.6 460.8 
Less accumulated depreciation(232.9)(265.8)
Total$236.7 $195.0