Derivative Instruments, Non-Designated Hedges (Details) - Foreign exchange contract [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Maturity period of non designated hedges derivatives			2 months
Other income (expense), net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net gain (loss) on non-designated derivative instruments	$ (2.4)	$ (2.4)	$ (0.3)	$ (3.0)