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Acquisitions (Details)
$ in Millions
12 Months Ended
Oct. 01, 2018
USD ($)
Feb. 01, 2018
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
acquisition
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]          
Business acquisition, cash paid     $ 0.0 $ 8.1 $ 46.9
Erie Press Systems EP          
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]          
Business acquisition, cash paid       $ 8.1  
Cash acquired     10.4    
Contingent consideration, range of outcomes, high     1.0    
Contingent consideration, period       2 years  
Contingent consideration liability     0.0    
Reversal of contingent consideration liability     $ 1.0    
CDF          
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]          
Purchase price   $ 35.6      
Hydrapower Dynamics Limited          
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]          
Purchase price $ 7.8        
Immaterial business acquisitions          
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]          
Purchase price         $ 3.5
Number of acquisitions | acquisition         2