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Property, Plant and Equipment (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Property, Plant and Equipment [Abstract]    
Land and improvements $ 40.1 $ 40.1
Buildings and improvements 341.1 340.1
Machinery and equipment 1,522.1 1,506.5
Construction in progress 89.6 15.8
Property, plant and equipment, gross 1,992.9 1,902.5
Less accumulated depreciation (1,100.4) (1,022.1)
Property, plant and equipment - net $ 892.5 $ 880.4