Summary of Effects of Interest Rate Swap Agreements and Foreign Currency Foreign Exchange Contracts on Result of Operations (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Derivative Instruments Gain Loss [Line Items]
Gain/(Loss) recognized in AOCI		$ (2,917)	$ 2,124
Designated As Hedging Instrument | Cash Flow Hedging | Interest Rate Swap
Derivative Instruments Gain Loss [Line Items]
Gain/(Loss) recognized in AOCI	[1]	(2,917)	2,124
Designated As Hedging Instrument | Net Investment Hedge | Foreign Currency Foreign Exchange Contracts
Derivative Instruments Gain Loss [Line Items]
Gain/(Loss) recognized in AOCI	[2]	$ 5,221	$ (45,853)

[1] The amount of gain reclassified out of AOCI into Interest expense, net was $2.9 million and $709,000 during the three month periods ended March 31, 2019 and 2018, respectively.

[2] The amount reclassified out of AOCI into Other (income) expense, net includes the net effect of a $3.8 million gain offset by a $3.8 million loss recorded on repatriation of cash related to our net investment in the U.K. for the three month period ended March 31, 2019. There were no amounts reclassified out of AOCI for the three month period ended March 31, 2018