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Severance and Restructuring Charges - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Sep. 30, 2020
Jun. 30, 2020
Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]      
Accelerated depreciation related to facility lease right of use   $ 2.9  
Restructuring reserves $ 2.2    
Severance expense 0.9    
Cost related to re-engineering initiatives     $ 65.0
Facility-related      
Restructuring Cost and Reserve [Line Items]      
Restructuring reserves 2.8 3.2  
Employee-related      
Restructuring Cost and Reserve [Line Items]      
Restructuring reserves $ 0.7 $ 1.0