Unaudited Consolidated Statements of Comprehensive Income (Loss) - 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	$ 188,817	$ 225,805	$ 494,365	$ 659,563
Other comprehensive loss:
Foreign currency translation losses, net of tax	(10,328)	(180,317)	(577,189)	(148,282)
Net change in derivative contracts, net of tax	9,167	(6,164)	(33,482)	(52,538)
Total other comprehensive loss	(1,161)	(186,481)	(610,671)	(200,820)
Total comprehensive income (loss)	$ 187,656	$ 39,324	$ (116,306)	$ 458,743