Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Revenue	$ 3,461,223	$ 3,198,149	$ 2,893,617
Costs and operating expenses:
Cost of revenue (exclusive of amortization of acquired intangible assets shown below)	1,268,956	1,132,672	987,624
Research and development	335,372	269,315	261,365
Sales and marketing	461,967	510,405	523,883
General and administrative	553,024	547,888	516,093
Amortization of acquired intangible assets	48,019	42,049	38,581
Restructuring charge	10,737	37,286	17,153
Total costs and operating expenses	2,678,075	2,539,615	2,344,699
Income from operations	783,148	658,534	548,918
Interest income	15,620	29,122	34,355
Interest expense	(72,332)	(69,120)	(49,364)
Other income (expense), net	1,785	(2,454)	(1,428)
Income before provision for income taxes	728,221	616,082	532,481
Provision for income taxes	(62,571)	(45,922)	(53,350)
Loss from equity method investment	(14,008)	(13,106)	(1,096)
Net income	$ 651,642	$ 557,054	$ 478,035
Net income per share:
Basic (in dollars per share)	$ 4.01	$ 3.43	$ 2.94
Diluted (in dollars per share)	$ 3.93	$ 3.37	$ 2.90
Shares used in per share calculations:
Basic (in shares)	162,665	162,490	162,706
Diluted (in shares)	165,804	165,213	164,573