Location and Amounts of Gains and Losses on Derivative Instruments Designated as Cash Flow Hedges (Detail) - Cash flow hedges - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in Other Comprehensive Income (Loss)	$ 9.6	$ 1.2	$ 10.8	$ 0.9
Gain/(Loss) Reclassified from Accumulated Other Comprehensive Loss into Income	3.2	(0.2)	5.1	(0.2)
Forward currency contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in Other Comprehensive Income (Loss)	(1.9)	0.6	(1.8)	0.9
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)	0.2	0.6	0.8
Option currency contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in Other Comprehensive Income (Loss)	1.4	0.6	10.4	0.0
Option currency contracts | Cost of Goods Sold
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Reclassified from Accumulated Other Comprehensive Loss into Income	3.4	(0.4)	4.5	(1.0)
Interest rate swap contract
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Recognized in Other Comprehensive Income (Loss)	10.1	0.0	2.2	0.0
Interest rate swap contract | Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain/(Loss) Reclassified from Accumulated Other Comprehensive Loss into Income	$ 0.0	$ 0.0	$ 0.0	$ 0.0