Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements and Derivatives (Detail Textuals)

v3.3.1.900
Fair Value Measurements and Derivatives (Detail Textuals)
€ in Millions, $ in Millions
12 Months Ended
Dec. 31, 2015
USD ($)
Metric_Ton
Dec. 31, 2015
EUR (€)
Metric_Ton
Dec. 31, 2014
USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Fair value of long-term debt $ 6,495.5   $ 6,229.1
Increase in goodwill 985.1    
Increase in intangibles 800.0    
Maximum      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Fair value of long-term debt in excess of carrying value     $ 45.0
Minimum      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Fair value of long-term debt in excess of carrying value $ 6.6    
Fuel Swaps      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Projected fuel purchases | Metric_Ton 1.6 1.6  
Foreign currency forward contracts      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Notional amount of derivatives $ 1,200.0 € 1,100.0  
Foreign currency collar      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Notional amount of derivatives 298.1 € 274.4  
Interest rates swaps      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Notional amount of derivatives $ 715.9