Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Revenues	$ 7,970,141	$ 7,341,777	$ 15,837,908	$ 14,505,059
Cost of revenues	4,690,755	4,018,008	8,975,460	7,886,519
Marketing	574,960	603,973	1,130,938	1,116,485
Technology and development	716,846	537,321	1,374,376	1,062,528
General and administrative	409,297	334,845	807,225	632,041
Operating income	1,578,283	1,847,630	3,549,909	3,807,486
Other income (expense):
Interest expense	(175,455)	(191,322)	(363,034)	(385,762)
Interest and other income (expense)	220,226	(62,519)	415,871	206,567
Income before income taxes	1,623,054	1,593,789	3,602,746	3,628,291
Provision for income taxes	(182,103)	(240,776)	(564,348)	(568,563)
Net income	$ 1,440,951	$ 1,353,013	$ 3,038,398	$ 3,059,728
Earnings per share:
Basic (dollars per share)	$ 3.24	$ 3.05	$ 6.84	$ 6.90
Diluted (dollars per share)	$ 3.20	$ 2.97	$ 6.73	$ 6.72
Weighted-average shares of common stock outstanding:
Basic (in shares)	444,557	443,159	444,352	443,192
Diluted (in shares)	450,169	455,129	451,578	455,385