Derivatives and Hedging Instruments - Summary of Effects of Derivatives on Cash Flow Hedging Relationships in Company's Statements of Income, Derivatives Not Designated as Hedging Instruments (Detail) (Details) - Foreign Currency Exchange Contracts [Member] - Other Income (Expense) [Member] - Not Designated as Hedging Instrument [Member] - Cash Flow Hedging [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Income on Derivative	$ 2,000	$ 0	$ 7,400	$ 0
Gain (loss) recognized in earnings after tax and noncontrolling interest	$ (200)		$ 1,600