Derivatives and Hedging Activities - Additional Information (Detail) (USD $) In Millions, unless otherwise specified				9 Months Ended
	Sep. 30, 2014 Derivative	Dec. 31, 2013 Derivative	Aug. 31, 2014 Interest Rate and Currency Swap [Member]	Sep. 30, 2014 Foreign Currency Forward Contracts [Member] Minimum [Member]	Sep. 30, 2014 Foreign Currency Forward Contracts [Member] Maximum [Member]	Aug. 31, 2014 Term Loan A Facility Due 2019 [Member]
Derivative Instruments Gain Loss [Line Items]
Notional amount of outstanding interest rate swaps	$ 100	$ 100	$ 100			$ 100
Maturity period of foreign currency forward contracts				12 months	18 months
Number of foreign exchange options outstanding	0	0
Number of interest rate and currency swap agreements outstanding		0