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		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Derivative Instruments Gain Loss [Line Items]
Gain/(Loss) recognized in AOCI			$ (1,008)		$ (3,925)
Designated As Hedging Instrument | Cash Flow Hedging | Interest Rate Swap
Derivative Instruments Gain Loss [Line Items]
Gain/(Loss) recognized in AOCI	[1]	$ 0	(1,008)	$ 0	(3,925)
Designated As Hedging Instrument | Net Investment Hedge | Foreign Currency Foreign Exchange Contracts
Derivative Instruments Gain Loss [Line Items]
Gain/(Loss) recognized in AOCI		$ 2,989	$ 40,436	$ 43,535	$ 45,657

[1] The amount of gain reclassified out of AOCI into interest expense, net was $0 and $456,000 during the three-month periods ended June 30, 2020 and 2019, respectively, and $0 and $3.4 million during the six-month periods ended June 30, 2020 and 2019, respectively.