CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (52,833)	$ 148,234	$ (294,317)	$ 105,202
Other comprehensive income (loss):
Foreign currency translation adjustments	(206,819)	47,139	(265,342)	37,879
Unrealized gain (loss) on cash flow hedging activities, net of income tax provision (benefit) of $22, $167, $353 and ($327), respectively	153	1,169	2,468	(2,287)
Unrealized gain (loss) on fair value hedging activities, net of income tax provision (benefit) of $28, $—, ($97) and $—, respectively	84	0	(291)	0
Other comprehensive income (loss)	(206,582)	48,308	(263,165)	35,592
Total comprehensive income (loss)	$ (259,415)	$ 196,542	$ (557,482)	$ 140,794