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Acquisitions - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended 12 Months Ended
Nov. 01, 2017
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2021
Business Acquisition [Line Items]            
Severance costs   $ 0.8 $ 0.9 $ 9.6 $ 7.1  
DuPont            
Business Acquisition [Line Items]            
Supply agreement term 5 years          
Revenues   $ 24.0 $ 36.0 87.0 $ 85.0  
DuPont | Minimum            
Business Acquisition [Line Items]            
Expected remaining expense       15.0    
DuPont | Minimum | Forecast            
Business Acquisition [Line Items]            
Severance costs           $ 5.0
DuPont | Maximum            
Business Acquisition [Line Items]            
Expected remaining expense       $ 20.0    
DuPont | Maximum | Forecast            
Business Acquisition [Line Items]            
Severance costs           $ 8.0