Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 667,434	$ 57,518	$ 2,107,457	$ 593,576
Other comprehensive (loss) income:
Unrealized holding (losses) gains on marketable securities, net	(1,132)	64	818	1,111
Unrealized (losses) gains on foreign currency forward contracts, net of tax of $7.6 million, $2.2 million, $7.3 million and $5.5 million, respectively	(26,313)	12,812	(27,211)	6,814
Foreign currency translation adjustment	584	9,172	(12,616)	10,263
Total other comprehensive (loss) income	(26,861)	22,048	(39,009)	18,188
Comprehensive income	$ 640,573	$ 79,566	$ 2,068,448	$ 611,764