CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income, as reported	$ 1,191,624	$ 1,377,475	$ 1,409,594
Other comprehensive income (loss):
Change in foreign currency translation adjustment, net of tax	(85,021)	(71,158)	35,531
Available-for-sale investments:
Change in net unrealized losses	(4,887)	(1,041)	(110)
Net change in available-for-sale investments	(4,887)	(1,041)	(110)
Other comprehensive income (loss)	(89,908)	(72,199)	35,421
Comprehensive income	$ 1,101,716	$ 1,305,276	$ 1,445,015