Financial Instruments - Effects of Derivative Financial Instruments on Income and Other Comprehensive Income (Loss) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	$ 0.6	[1]	$ 0	[1]	$ (2.3)	[1],[2]	$ 0	[1]
Derivative financial instruments, tax	(0.4)				1.4
Foreign exchange contracts | Not Designated as Hedging Instrument | Foreign Currency Gain (Loss)
Derivative Instruments, Gain (Loss) [Line Items]
Foreign currency losses (gains), net	1.5		(1.0)		0.2		1.3
Interest Rate Swap | Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	0.6				(2.3)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax			$ 0				$ 0

[1] Net of tax expense (benefit) of $0.4 million and $(1.4) million for the three and nine months ended September 30, 2014, respectively.

[2] For the nine months ended September 30, 2014, the 2013 Interest Rate Swap (as hereinafter defined) was deemed effective and therefore the changes in fair value related to the 2013 Interest Rate Swap are recorded in other comprehensive income. See Note 14, "Financial Instruments," for further discussion of the 2013 Interest Rate Swap.