CONDENSED CONSOLIDATED STATEMENTS OF INCOME - 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]
Revenue	$ 903,332	$ 852,824	$ 1,806,979	$ 1,695,532
Costs and operating expenses:
Cost of revenue (exclusive of amortization of acquired intangible assets shown below)	346,649	320,000	679,401	626,687
Research and development	92,070	77,255	192,005	159,300
Sales and marketing	126,665	111,894	249,384	228,248
General and administrative	141,219	134,295	294,481	271,010
Amortization of acquired intangible assets	16,972	12,060	30,616	23,487
Restructuring charge (benefit)	4,715	(2,114)	12,731	5,002
Total costs and operating expenses	728,290	653,390	1,458,618	1,313,734
Income from operations	175,042	199,434	348,361	381,798
Interest and marketable securities (loss) income, net	(2,331)	4,736	(2,542)	9,314
Interest expense	(2,932)	(18,037)	(5,627)	(35,871)
Other income (expense), net	816	(811)	(8,749)	(1,628)
Income before provision for income taxes	170,595	185,322	331,443	353,613
Provision for income taxes	(51,058)	(18,009)	(85,108)	(29,907)
Loss from equity method investment	0	(10,816)	(7,635)	(11,514)
Net income	$ 119,537	$ 156,497	$ 238,700	$ 312,192
Net income per share:
Basic (in dollars per share)	$ 0.75	$ 0.96	$ 1.49	$ 1.91
Diluted (in dollars per share)	$ 0.74	$ 0.94	$ 1.47	$ 1.88
Shares used in per share calculations:
Basic (in shares)	160,038	163,074	160,266	163,067
Diluted (in shares)	161,710	166,263	162,674	165,976