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	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in Other Comprehensive Income (Loss)	$ 1.2	$ 0.2	$ 0.9	$ 4.7
Gain/(Loss) Reclassified from Accumulated Other Comprehensive Loss into Income	(0.2)	0.2	(0.2)	(0.5)
Forward currency contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in Other Comprehensive Income (Loss)	0.6	(0.2)	0.9	4.6
Forward currency contracts | Cost of Goods Sold
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Reclassified from Accumulated Other Comprehensive Loss into Income	0.2	0.4	0.8	0
Option currency contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in Other Comprehensive Income (Loss)	0.6	0.4	0	0.1
Option currency contracts | Cost of Goods Sold
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Reclassified from Accumulated Other Comprehensive Loss into Income	$ (0.4)	$ (0.2)	$ (1.0)	$ (0.5)