Financial Derivatives and Hedging Activities - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2015
Designated as Hedging [Member] | Minimum [Member]
Derivative [Line Items]
Period of production costs expected to be incurred	12 months
Maturities of foreign currency derivative contracts	12 months
Designated as Hedging [Member] | Maximum [Member]
Derivative [Line Items]
Period of production costs expected to be incurred	18 months
Maturities of foreign currency derivative contracts	18 months
Not Designated as Hedging [Member]
Derivative [Line Items]
Maturities of foreign currency derivative contracts	1 month
Fair Value, Measurements [Member]
Derivative [Line Items]
Accumulated other comprehensive income realization period	12 months