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Long-term Debt (Details)
$ in Millions
Dec. 31, 2018
USD ($)
Dec. 31, 2018
CLP ($)
Dec. 31, 2017
USD ($)
Sep. 30, 2016
USD ($)
May 01, 2012
Notes and Loans Payable [Abstract]          
Long-term Debt, Gross $ 355.7   $ 380.4    
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net (3.8)   (4.5)    
Long-term debt 351.9   375.9    
Current portion of long-term debt (5.0)   (25.1)    
Long term debt, Gross, Noncurrent 350.7   355.3    
Long-term debt, excluding current portion 346.9   350.8    
Senior unsecured notes, maturing 2024 [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Face Amount $ 350.0        
Notes and Loans Payable [Abstract]          
Debt, interest rate, stated percentage 4.90% 4.90%     4.875%
Long-term Debt, Gross $ 350.0   350.0    
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net (3.7)   (4.4)    
Long-term debt 346.3   345.6    
Chilean term credit facility, maturing 2019 [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Face Amount $ 39.0 $ 943,543.7391      
Notes and Loans Payable [Abstract]          
Debt, interest rate, stated percentage 3.90% 3.90%      
Long-term Debt, Gross $ 4.7   7.7    
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net (0.1)   (0.1)    
Long-term debt 4.6   7.6    
Senior notes payable 2018 [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Face Amount $ 348.6        
Notes and Loans Payable [Abstract]          
Debt, interest rate, stated percentage 7.30% 7.30%      
Long-term Debt, Gross $ 0.0   22.0    
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net 0.0   0.0    
Long-term debt 0.0   22.0    
Other Debt Obligations [Member]          
Notes and Loans Payable [Abstract]          
Long-term Debt, Gross 1.0   0.7    
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net     0.0 $ 0.0  
Long-term debt $ 1.0   $ 0.7