Derivative Instruments and Hedging Activities (Details) (Foreign Exchange Contract [Member], USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Gain (loss) recognized on non-designated derivative instruments:    
Gain (loss) recognized on non-designated derivative instruments, total $ 4.2 $ (0.2)
Interest expense [Member]
   
Gain (loss) recognized on non-designated derivative instruments:    
Gain (loss) recognized on non-designated derivative instruments, total (1.3) (1.4)
Foreign exchange gain (loss), net [Member]
   
Gain (loss) recognized on non-designated derivative instruments:    
Gain (loss) recognized on non-designated derivative instruments, total $ 5.5 $ 1.2