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LONG-TERM OBLIGATIONS - 2014 Credit Agreement (Details)
€ in Millions, $ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2017
USD ($)
Sep. 30, 2016
USD ($)
Sep. 30, 2017
USD ($)
Sep. 30, 2016
USD ($)
Dec. 31, 2016
USD ($)
Aug. 13, 2014
USD ($)
Aug. 13, 2014
EUR (€)
Debt Instrument [Line Items]              
Loss on early extinguishment of debt $ 0.7 $ 0.0 $ 52.6 $ 0.4      
2014 Credit Agreement              
Debt Instrument [Line Items]              
Available borrowing capacity           $ 600.0  
Loss on early extinguishment of debt     $ 8.2        
Long-term debt         $ 428.6    
Debt, weighted average interest rate         3.63%    
Maximum amount of letters of credit available under the Credit Agreement           400.0  
Letters of credit maximum available under additional facilities           $ 300.0  
Percentage of capital stock of foreign subsidiary pledged as collateral for borrowings (as a percent)           65.00% 65.00%
2014 Credit Agreement Additional LC Arrangements              
Debt Instrument [Line Items]              
Letters of credit outstanding, amount         $ 36.8    
Bilateral Arrangements 2014 Credit Agreement              
Debt Instrument [Line Items]              
Letters of credit outstanding, amount         146.4    
Line of Credit | Revolving Credit Facility | 2014 Credit Agreement              
Debt Instrument [Line Items]              
Available borrowing capacity           $ 600.0  
Springing covenant threshold           30.00% 30.00%
Debt instrument covenant minimum interest coverage ratio     2.5        
Letters of credit outstanding, amount         183.2    
Line of Credit | Secured Debt | 2014 Credit Agreement              
Debt Instrument [Line Items]              
Line of credit           $ 230.0 € 200.0
Debt instrument covenant senior secured debt leverage ratio maximum     2.75        
Line of Credit | Letter of Credit | 2014 Credit Agreement              
Debt Instrument [Line Items]              
Letters of credit outstanding, amount         0.0    
Line of Credit | Discontinued Operations | Letter of Credit | 2014 Credit Agreement              
Debt Instrument [Line Items]              
Letters of credit outstanding, amount         $ 121.4