Derivative Instruments and Hedging Strategies (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Derivative [Line Items]
Derivative Asset, Fair Value	$ 22,206	$ 14,011
Derivative Liability, Fair Value	7,543		$ 5,065
Derivatives Designated As Hedging Instruments
Derivative [Line Items]
Derivative Asset, Fair Value	21,242	14,011
Derivative Liability, Fair Value	7,518		5,043
Derivatives Designated As Hedging Instruments | Forward Foreign Currency Exchange Contracts | Other Current Assets
Derivative [Line Items]
Derivative Asset, Fair Value	13,048	10,478
Derivatives Designated As Hedging Instruments | Forward Foreign Currency Exchange Contracts | Other Assets
Derivative [Line Items]
Derivative Asset, Fair Value	8,194	3,533
Derivatives Designated As Hedging Instruments | Forward Foreign Currency Exchange Contracts | Accounts Payable and Accrued Liabilities
Derivative [Line Items]
Derivative Liability, Fair Value	5,176		1,986
Derivatives Designated As Hedging Instruments | Forward Foreign Currency Exchange Contracts | Other Long-Term Liabilities
Derivative [Line Items]
Derivative Liability, Fair Value	2,342		3,057
Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative Asset, Fair Value	964	0
Derivative Liability, Fair Value	25		22
Not Designated as Hedging Instrument | Forward Foreign Currency Exchange Contracts | Other Current Assets
Derivative [Line Items]
Derivative Asset, Fair Value	964	$ 0
Not Designated as Hedging Instrument | Forward Foreign Currency Exchange Contracts | Accounts Payable and Accrued Liabilities
Derivative [Line Items]
Derivative Liability, Fair Value	$ 25		$ 22