Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

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Fair Value Measurements - Gains and Losses on Derivative Instruments in Consolidated Statement of Income (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss)/Gain Recognized in Other Comprehensive Income on Derivatives	$ (1,220)		$ (2,341)
Amount of (Loss)/Gain Recognized in Other Comprehensive Income on Derivatives		$ 470		$ 2,610
Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss)/Gain Recognized in Other Comprehensive Income on Derivatives	(367)		(1,550)
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Income	853		791
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Income		1,592		98
Designated as Hedging Instrument \| Net sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Income	455		854
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Income		382		(218)
Designated as Hedging Instrument \| Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Income	(31)		(63)
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Income		(36)		(71)
Designated as Hedging Instrument \| Other non-operating expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Income	429		0
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Income		1,246		387
Not designated as hedging instruments: \| Foreign Currency Derivative \| Other non-operating expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivatives	$ 376	2,324	$ (630)	43
Derivatives Designated as Cash Flow Hedges \| Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss)/Gain Recognized in Other Comprehensive Income on Derivatives		$ 2,062		$ 2,708