CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Revenue	$ 935,721	$ 903,332	$ 1,851,419	$ 1,806,979
Costs and operating expenses:
Cost of revenue (exclusive of amortization of acquired intangible assets shown below)	373,275	346,649	734,591	679,401
Research and development	99,041	92,070	190,904	192,005
Sales and marketing	136,554	126,665	265,661	249,384
General and administrative	151,811	141,219	297,950	294,481
Amortization of acquired intangible assets	15,898	16,972	31,810	30,616
Restructuring charge	9,357	4,715	54,080	12,731
Total costs and operating expenses	785,936	728,290	1,574,996	1,458,618
Income from operations	149,785	175,042	276,423	348,361
Interest and marketable securities income (loss), net	4,509	(2,331)	9,801	(2,542)
Interest expense	(3,157)	(2,932)	(5,838)	(5,627)
Other (expense) income, net	(1,130)	816	(3,493)	(8,749)
Income before provision for income taxes	150,007	170,595	276,893	331,443
Provision for income taxes	(21,191)	(32,755)	(50,971)	(52,592)
Loss from equity method investment	0	0	0	(7,635)
Net income	$ 128,816	$ 137,840	$ 225,922	$ 271,216
Net income per share:
Basic (in dollars per share)	$ 0.85	$ 0.86	$ 1.47	$ 1.69
Diluted (in dollars per share)	$ 0.84	$ 0.85	$ 1.46	$ 1.67
Shares used in per share calculations:
Basic (in shares)	152,064	160,038	153,850	160,266
Diluted (in shares)	153,454	161,710	154,795	162,674