Derivative Financial Instruments - Schedule of Change in Fair Value of Foreign Currency Forward Exchange Contracts Under Hedge Designations (Details) - Designated as Hedging Instrument - Foreign Currency Forward Exchange Contracts - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Derivative [Line Items]
Unrealized (losses) gains at beginning of period, net of tax	$ (25.2)	$ 6.1	$ (9.2)	$ 7.2
Losses (gains) reclassified to net sales	4.6	(1.2)	7.4	(3.5)
Increase (decrease) in fair value	5.3	(7.4)	(13.5)	(6.2)
Unrealized (losses) gains at end of period, net of taxes	$ (15.3)	$ (2.5)	$ (15.3)	$ (2.5)