CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Revenue	$ 903,647	$ 842,708
Costs and operating expenses:
Cost of revenue (exclusive of amortization of acquired intangible assets shown below)	332,752	306,687
Research and development	99,935	82,045
Sales and marketing	122,719	116,354
General and administrative	153,262	136,715
Amortization of acquired intangible assets	13,644	11,427
Restructuring charge	8,016	7,116
Total costs and operating expenses	730,328	660,344
Income from operations	173,319	182,364
Interest and marketable securities (loss) income, net	(211)	4,578
Interest expense	(2,695)	(17,834)
Other expense, net	(9,565)	(817)
Income before provision for income taxes	160,848	168,291
Provision for income taxes	(34,050)	(11,898)
Loss from equity method investment	(7,635)	(698)
Net income	$ 119,163	$ 155,695
Net income per share:
Basic (in dollars per share)	$ 0.74	$ 0.95
Diluted (in dollars per share)	$ 0.73	$ 0.94
Shares used in per share calculations:
Basic (in shares)	160,494	163,061
Diluted (in shares)	163,637	165,688