Derivative Instruments and Hedging Activities (Details Textuals) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Mar. 31, 2006
Derivative Instruments and Hedging Activities (Textuals)        
Fair value of investment hedge contracts $ 1.1   $ 1.1  
(Loss) gain on investment hedge derivative 6.6 (2.5)    
Fair value of non-designated foreign exchange forward contracts 0.9   0.8  
Maximum maturities of Foreign exchange forward contracts 24 months      
Fair value of interest rate contracts (0.9)   (1.2)  
Notional amount of pay-fixed receive-variable interest rate swap       200.0
Gain recognized on designated cash flow hedges 0.3 0.3    
Anticipated reclassification from other comprehensive income to interest expense within the next 12 months 0.6      
Interest rate swaps        
Derivative Instruments and Hedging Activities (Textuals)        
Notional amount of pay-fixed receive-variable interest rate swap $ 50.0