Financial Instruments - Derivative Instruments Designated as Cash Flow and Net Investment Hedging Instruments (Detail) - USD ($) $ in Thousands		3 Months Ended				6 Months Ended
		Jun. 30, 2018		Jun. 30, 2017		Jun. 30, 2018	Jun. 30, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in OCI on Derivative (Effective Portion)		$ 39,317		$ (33,629)		$ 22,117	$ (47,836)
Amount of (Loss) Gain Reclassified from Accumulated OCI into Income (Effective Portion)		(2,546)		1,603		(4,955)	1,890
Foreign currency contracts | Derivatives in Cash Flow Hedging Relationships [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in OCI on Derivative (Effective Portion)		10,241		(6,328)		9,498	(9,276)
Foreign currency contracts | Derivatives in Net Investment Hedging Relationships [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in OCI on Derivative (Effective Portion)		178		(2,082)		(518)	(3,128)
Foreign currency contracts | Cost of goods sold [Member] | Derivatives in Cash Flow Hedging Relationships [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Reclassified from Accumulated OCI into Income (Effective Portion)		(2,330)		1,789		(4,523)	2,247
Interest rate swaps | Derivatives in Cash Flow Hedging Relationships [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in OCI on Derivative (Effective Portion)		216	[1]	(5,439)	[1]	432	(4,243)
Interest rate swaps | Interest expense | Derivatives in Cash Flow Hedging Relationships [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Reclassified from Accumulated OCI into Income (Effective Portion)	[1]	(216)		(186)		(432)	(357)
Senior Notes 2016 | Derivatives in Net Investment Hedging Relationships [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in OCI on Derivative (Effective Portion)		$ 28,682		$ (19,780)		$ 12,705	$ (31,189)

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