Financial Instruments - Fair Value of Derivative Financial Instruments in Consolidated Balance Sheet (Detail) (Foreign Exchange Contracts [Member], Not Designated as Hedging Instrument [Member], USD $) In Millions, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011
Accrued Expenses [Member]
Derivatives not designated as hedging instruments:
Liabilities, Fair Value	$ 0.4	[1]	$ 0.8	[1]
Prepaid Expenses and Other [Member]
Derivatives not designated as hedging instruments:
Assets, fair value	$ 0.1	[1]	$ 0.2	[1]

[1] The fair values of the FX Contracts at December 31, 2012 and 2011 were determined by using observable market transactions of spot and forward rates at December 31, 2012 and 2011, respectively.