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Derivative Instruments and Hedges (Details Textual)
€ in Millions
3 Months Ended
Mar. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Mar. 17, 2015
EUR (€)
Forward Exchange Contract      
Derivative [Line Items]      
Minimum Remaining Maturity of Foreign Currency Derivatives 3 days    
Lower maturity range (days) 20 months    
Designated as Hedging Instrument | Forward Exchange Contract      
Derivative [Line Items]      
Derivative, notional amount | $ $ 0 $ 600,000  
Not Designated as Hedging Instrument | Forward Exchange Contract      
Derivative [Line Items]      
Derivative, notional amount | $ $ 387,000,000 $ 393,200,000  
2022 EUR Senior Notes      
Derivative [Line Items]      
Designated Amount, Net Investment Hedge | €     € 255.7
Debt Instrument, Face Amount | €     € 500.0