Location and Amounts of Gains and Losses on Derivative Instruments Designated as Cash Flow Hedges (Detail) (Cash flow hedges, USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in Other Comprehensive Income (Loss)	$ 2.5	$ 3.5	$ (4.1)
Gain/(Loss) Reclassified from Accumulated Other Comp. Loss into Income	1.2	1.2	2.0
Forward currency contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in Other Comprehensive Income (Loss)	4.2	4.0	(4.2)
Forward currency contracts | Cost of Goods Sold
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Reclassified from Accumulated Other Comp. Loss into Income	3.0	(1.3)	3.0
Option currency contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in Other Comprehensive Income (Loss)	(1.7)	(0.5)	0.1
Option currency contracts | Cost of Goods Sold
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Reclassified from Accumulated Other Comp. Loss into Income	$ (1.8)	$ 2.5	$ (1.0)