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Restructuring Restructuring Costs (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]    
Restructuring Reserve $ 0.6 $ 0.0
Payments for Restructuring (1.5)  
Restructuring Charges 2.1  
One-time Termination Benefits [Member]    
Restructuring Cost and Reserve [Line Items]    
Restructuring Reserve 0.4 0.0
Payments for Restructuring (0.4)  
Restructuring Charges 0.8  
Other Restructuring [Member]    
Restructuring Cost and Reserve [Line Items]    
Restructuring Reserve 0.2 $ 0.0
Payments for Restructuring (1.1)  
Restructuring Charges $ 1.3