Unaudited Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 196,247	$ 158,488	$ 380,486	$ 305,548
Other comprehensive income (loss):
Foreign currency translation gains (losses), net of tax	206,805	8,257	77,648	(566,861)
Net change in derivative contracts, net of tax	9,037	1,892	20,333	(42,649)
Total other comprehensive income (loss)	215,842	10,149	97,981	(609,510)
Total comprehensive income (loss)	$ 412,089	$ 168,637	$ 478,467	$ (303,962)