Derivative Instruments and Hedges (Details Textual)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2015
Forward Exchange Contract [Member]
Mar. 31, 2015
Interest Rate Swap
USD ($)
Dec. 31, 2014
Interest Rate Swap
USD ($)
Mar. 31, 2015
Designated as Hedging Instrument [Member]
Forward Exchange Contract [Member]
USD ($)
Dec. 31, 2014
Designated as Hedging Instrument [Member]
Forward Exchange Contract [Member]
USD ($)
Mar. 31, 2015
Not Designated as Hedging Instrument [Member]
Forward Exchange Contract [Member]
USD ($)
Dec. 31, 2014
Not Designated as Hedging Instrument [Member]
Forward Exchange Contract [Member]
USD ($)
Mar. 17, 2015
2022 EUR Senior Notes
USD ($)
Mar. 17, 2015
2022 EUR Senior Notes
EUR (€)
Derivative [Line Items]                    
Designated Amount, Net Investment Hedge                   € 255.7
Derivative, notional amount     25.0 40.0 81.0 125.9 498.9 421.1    
Lower maturity range   2 days                
Higher maturity range   34 months                
Maximum remaining length of interest rate swap contract 3 months                  
Debt Instrument, Face Amount                 $ 500.0 € 500.0