Financial Instruments and Fair Value Measurements - Summary of Recognized Unrealized Gains (Losses) in Foreign Currency and Derivative Gains (Losses) Net on Remeasurement of Unhedged Portion of Debt and Accrued Interest (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Derivatives Fair Value [Line Items]
Foreign currency translation gains (losses), net	$ 171,759	$ (133,533)
Forward Contracts [Member]
Derivatives Fair Value [Line Items]
Foreign currency translation gains (losses), net	$ 46,000	$ 82,000