CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities:
Net income	$ 575,692	$ 500,412	$ 523,710
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	142,672	132,504	114,563
Operating lease right-of-use assets expense	22,620	23,514	22,721
Deferred income tax benefit	(80,403)	(91,306)	(130,716)
Provision for bad debts	2,598	2,704	6,222
Stock-based compensation expense	270,900	221,891	168,128
Other	1,242	1,238	4,680
Changes in operating assets and liabilities:
Accounts receivable	(231,900)	(102,516)	(114,986)
Other receivables and current assets	4,910	(30,204)	30,259
Other long-term assets	6,841	(8,563)	(3,613)
Accounts payable, accrued expenses and current liabilities	23,620	27,853	(8,250)
Accrued income taxes	(6,917)	13,731	99
Deferred revenue	62,005	34,507	33,003
Other long-term liabilities	1,860	(8,643)	(14,817)
Net cash provided by operating activities	795,740	717,122	631,003
Cash flows from investing activities:
Acquisitions, net of cash acquired	(1,586)	(208,911)	(386,264)
Capital expenditures	(44,045)	(25,318)	(24,370)
Purchases of short-term investments	(53,415)	(172)	(230)
Other investing activities	(516)	(5,641)	(504)
Net cash used in investing activities	(99,562)	(240,042)	(411,368)
Cash flows from financing activities:
Purchase of treasury stock	0	(196,494)	(205,571)
Restricted stock withholding taxes paid in lieu of issued shares	(106,097)	(63,645)	(64,242)
Proceeds from shares issued for stock-based compensation	10,475	30,114	25,595
Other financing activities	(2,922)	(1,294)	(1,290)
Net cash used in financing activities	(98,544)	(231,319)	(245,508)
Effect of exchange rate fluctuations on cash and cash equivalents	(11,092)	49	(27,403)
Net increase (decrease) in cash and cash equivalents	586,542	245,810	(53,276)
Cash and cash equivalents, beginning of period	860,201	614,391	667,667
Cash and cash equivalents, end of period	1,446,743	860,201	614,391
Supplemental disclosures of cash flow information:
Income taxes paid	184,415	144,117	115,339
Interest paid	47,081	46,069	20,844
Non-cash and unpaid consideration in connection with acquisitions	$ 0	$ 5,056	$ 5,391