Derivative Financial Instruments - Summary of Effect of Derivative Financial Instruments on Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of (Loss) Gain Recognized in OCI on Derivatives	$ 10,908	$ 9,129
Amount of Gain Reclassified from Accumulated OCI into Income	(6)	163
Net Investment [Member] | Foreign Currency Contracts [Member] | Interest Expense [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of (Loss) Gain Recognized in OCI on Derivatives	10,941	9,295
Cash Flow Hedges [Member] | Interest Rate Swaps/Derivatives [Member] | Interest Expense [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of (Loss) Gain Recognized in OCI on Derivatives	(33)	(166)
Amount of Gain Reclassified from Accumulated OCI into Income	$ (6)	$ 163