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		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Derivatives Fair Value [Line Items]
Foreign currency translation gains (losses), net	$ (18,586)	$ (1,053)	$ 153,173	$ (134,586)
Forward Contracts [Member]
Derivatives Fair Value [Line Items]
Foreign currency translation gains (losses), net	$ (3,000)	$ (56,000)	$ 43,000	$ 26,000