Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 2,761,395	$ 1,866,916	$ 1,211,242
Other comprehensive income (loss):
Foreign currency translation adjustments	67,919	(3,939)	975
Comprehensive income	$ 2,829,314	$ 1,862,977	$ 1,212,217