Summary of Effects of Interest Rate Swap Agreements and Foreign Currency Foreign Exchange Contracts on Result of Operations (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivative Instruments Gain Loss [Line Items]
Unrealized derivative gains on cash flow hedges		$ (3,925)	$ (2,805)	$ 6,679
Designated As Hedging Instrument | Cash Flow Hedging | Interest Rate Swap
Derivative Instruments Gain Loss [Line Items]
Unrealized derivative gains on cash flow hedges	[1]	(3,925)	(2,805)	6,679
Designated As Hedging Instrument | Net Investment Hedge | Foreign Currency Foreign Exchange Contracts
Derivative Instruments Gain Loss [Line Items]
Unrealized derivative gains on cash flow hedges		$ (18,328)	$ 75,059	$ (64,333)

[1] (a) The amount of gain (loss) reclassified out of AOCI into interest expense, net was $3.4 million, $6.7 million and $(2.4) million during 2019, 2018 and 2017, respectively.