CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income, as reported	$ 337,205	$ 347,654	$ 1,056,161	$ 937,858
Other comprehensive income (loss):
Change in foreign currency translation adjustment	(26,716)	21,217	(46,412)	(338)
Available-for-sale investments:
Change in net unrealized (losses) gains	43	(308)	(117)	196
Net change in available-for-sale investments	43	(308)	(117)	196
Other comprehensive income (loss)	(26,673)	20,909	(46,529)	(142)
Comprehensive income	$ 310,532	$ 368,563	$ 1,009,632	$ 937,716