Derivative Instruments and Hedging Activities (Fair Value of Derivative Instruments Outstanding) (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Derivatives not designated as hedges, asset	$ 3.3	$ 0.6
Derivatives not designated as hedges, liability	3.3	5.0
Total derivatives, asset	3.3	0.6
Total derivatives, liability	3.3	5.0
Foreign Exchange Forward Contracts [Member] | Prepaid expenses and other [Member]
Derivatives not designated as hedges, asset	3.3	0.6
Foreign Exchange Forward Contracts [Member] | Accounts payable [Member]
Derivatives not designated as hedges, liability	$ 3.3	$ 5.0