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Property, Plant and Equipment - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Property Plant And Equipment [Abstract]      
Depreciation $ 65.0 $ 67.4 $ 67.5
Accelerated depreciation 2.4 1.9  
Impairment charges and loss on sale $ 2.6 $ 9.0 $ 0.5