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Restructuring Costs - Schedule of Changes in Restructuring Reserve (Parenthetical) (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2019
Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]    
Restructuring reserve $ 15.5 $ 15.5
Restructuring reserve transferred to current operating lease liabilities (4.6)  
Americas | United States    
Restructuring Cost and Reserve [Line Items]    
Restructuring reserve 0.6 0.3
Southern Europe | France    
Restructuring Cost and Reserve [Line Items]    
Restructuring reserve 0.8 0.9
Southern Europe | Italy    
Restructuring Cost and Reserve [Line Items]    
Restructuring reserve $ 0.7 $ 0.5