Derivatives and Hedging Activities - Additional Information (Detail) (USD $) In Millions, unless otherwise specified			6 Months Ended
	Jun. 30, 2014 Derivative	Dec. 31, 2013 Derivative	Jun. 30, 2014 Minimum [Member] Foreign Currency Forward Contracts [Member]	Jun. 30, 2014 Maximum [Member] Foreign Currency Forward Contracts [Member]
Derivative Instruments Gain Loss [Line Items]
Maturity period of foreign currency forward contracts			12 months	18 months
Notional amount of outstanding interest rate swaps	$ 100	$ 100
Number of foreign exchange options outstanding	0	0
Number of interest rate and currency swap agreements outstanding	0	0