Location and Fair Value of Derivative Instruments Designated as Hedging Instruments (Detail) (Derivatives Designated as Hedging Instruments, USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	$ 10.0	$ 11.4
Fair value of derivative liability	0.6	0.5
Forward currency contracts | Other Current Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	1.3	1.2
Forward currency contracts | Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	0.1	0
Forward currency contracts | Accrued Expenses
Derivatives, Fair Value [Line Items]
Fair value of derivative liability	0.6	0.5
Option currency contracts | Other Current Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	0.7	1.3
Interest rate swap contract | Other Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	$ 7.9	$ 8.9