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		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in Other Comprehensive Income (Loss)	$ 0.4	$ 0.9	$ 5.1	$ 5.0
Gain/(Loss) Reclassified from Accumulated Other Comprehensive Loss into Income	1.1	0.2	0.6	1.1
Forward currency contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in Other Comprehensive Income (Loss)	(0.5)	1.5	4.1	4.0
Forward currency contracts | Cost of Goods Sold
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Reclassified from Accumulated Other Comprehensive Loss into Income	1.7	(0.4)	1.7	(0.4)
Option currency contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in Other Comprehensive Income (Loss)	0.9	(0.6)	1.0	1.0
Option currency contracts | Cost of Goods Sold
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Reclassified from Accumulated Other Comprehensive Loss into Income	$ (0.6)	$ 0.6	$ (1.1)	$ 1.5