CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Revenue	$ 965,484	$ 881,896	$ 2,816,903	$ 2,688,875
Costs and operating expenses:
Cost of revenue (exclusive of amortization of acquired intangible assets shown below)	383,075	346,450	1,117,666	1,025,851
Research and development	105,942	94,047	296,846	286,052
Sales and marketing	132,309	123,935	397,970	373,319
General and administrative	147,326	139,425	445,276	433,906
Amortization of acquired intangible assets	18,108	17,374	49,918	47,990
Restructuring charge	2,595	227	56,675	12,958
Total costs and operating expenses	789,355	721,458	2,364,351	2,180,076
Income from operations	176,129	160,438	452,552	508,799
Interest and marketable securities income (loss), net	11,412	782	21,213	(1,760)
Interest expense	(4,987)	(2,785)	(10,825)	(8,412)
Other expense, net	(3,161)	(275)	(6,654)	(9,024)
Income before provision for income taxes	179,393	158,160	456,286	489,603
Provision for income taxes	(20,326)	(34,466)	(71,297)	(87,058)
Gain (loss) from equity method investment	1,475	0	1,475	(7,635)
Net income	$ 160,542	$ 123,694	$ 386,464	$ 394,910
Net income per share:
Basic (in dollars per share)	$ 1.06	$ 0.78	$ 2.53	$ 2.47
Diluted (in dollars per share)	$ 1.04	$ 0.78	$ 2.50	$ 2.45
Shares used in per share calculations:
Basic (in shares)	151,359	158,715	153,020	159,749
Diluted (in shares)	154,976	159,068	154,855	161,472