Derivative Instruments and Hedging Activities (Fair Value of Derivative Instruments Outstanding) (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Derivatives not designated as hedges, asset	$ 1.4	$ 1.2
Derivatives not designated as hedges, liability	1.5	1.1
Total derivatives, asset	1.4	1.2
Total derivatives, liability	1.5	1.1
Foreign Exchange Forward Contracts [Member] | Prepaid expenses and other [Member]
Derivatives not designated as hedges, asset	1.4	1.2
Foreign Exchange Forward Contracts [Member] | Accounts payable [Member]
Derivatives not designated as hedges, liability	$ 1.5	$ 1.1