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Financial Derivatives and Hedging Activities - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2016
Designated as Hedging [Member] | Maximum [Member]
Derivative [Line Items]
Maturities of foreign currency derivative contracts	22 months
Designated as Hedging [Member] | Minimum [Member]
Derivative [Line Items]
Maturities of foreign currency derivative contracts	1 month
Not Designated as Hedging [Member]
Derivative [Line Items]
Maturities of foreign currency derivative contracts	1 month
Fair Value, Measurements [Member] | Maximum [Member]
Derivative [Line Items]
Accumulated other comprehensive income realization period	22 months
Fair Value, Measurements [Member] | Minimum [Member]
Derivative [Line Items]
Accumulated other comprehensive income realization period	12 months

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- Definition

Period over which deferred gains or losses are expected to be reclassed out of accumulated other comprehensive income.

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- Definition

Maturities of foreign currency derivative contracts.

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- Definition

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