Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Revenues	$ 7,867,767	$ 7,163,282
Cost of revenues	4,284,705	3,868,511
Marketing	555,978	512,512
Technology and development	657,530	525,207
General and administrative	397,928	297,196
Operating income	1,971,626	1,959,856
Other income (expense):
Interest expense	(187,579)	(194,440)
Interest and other income	195,645	269,086
Income before income taxes	1,979,692	2,034,502
Provision for income taxes	(382,245)	(327,787)
Net income	$ 1,597,447	$ 1,706,715
Earnings per share:
Basic (dollars per share)	$ 3.60	$ 3.85
Diluted (dollars per share)	$ 3.53	$ 3.75
Weighted-average shares of common stock outstanding:
Basic (in shares)	444,146	443,224
Diluted (in shares)	452,984	455,641