Financial Instruments - Fair Value of Derivative Financial Instruments in Consolidated Balance Sheet (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013
Interest Rate Swap | Designated as Hedging Instrument | Other assets
Derivative Instruments [Abstract]
Derivative Asset, Fair Value, Gross Asset	$ 0.9	[1]	$ 2.5	[1]
Foreign exchange contracts | Not Designated as Hedging Instrument | Prepaid expenses and other
Derivative Instruments [Abstract]
Derivative Asset, Fair Value, Gross Asset	0.6	[2]	1.0	[2]
Foreign exchange contracts | Not Designated as Hedging Instrument | Accrued Expenses
Derivative Instruments [Abstract]
Derivative Liability, Fair Value, Gross Liability	$ 0.5	[2]	$ 0.2	[2]

[1] The fair values of the 2013 Interest Rate Swap at March 31, 2014 and December 31, 2013 were measured based on the implied forward rates from the U.S. Dollar three-month LIBOR yield curve at March 31, 2014 and December 31, 2013, respectively.

[2] The fair values of the FX Contracts at March 31, 2014 and December 31, 2013 were measured based on observable market transactions of spot and forward rates at March 31, 2014 and December 31, 2013, respectively.