CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities:
Net income	$ 265,763	$ 251,456
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and intangible assets amortization	86,239	80,500
Operating lease right-of-use assets expense	17,356	16,896
Deferred income tax benefit	(63,560)	(22,459)
Provision for bad debts	2,476	827
Stock-based compensation expense	122,119	122,148
Gain on equity investment	0	(15,139)
Other	4,986	1,940
Changes in operating assets and liabilities:
Accounts receivable	66,369	86,098
Other receivables and current assets	96,641	57,992
Other long-term assets	(3,121)	(2,548)
Accounts payable, accrued expenses and current liabilities	(111,039)	(58,520)
Accrued income taxes	9,751	(18,997)
Deferred revenue	(28,203)	(46,467)
Other long-term liabilities	(8,746)	(5,898)
Net cash provided by operating activities	457,031	447,829
Cash flows from investing activities:
Acquisitions, net of cash acquired	(242,613)	(105,141)
Capital expenditures	(15,227)	(18,133)
Other investing activities	(782)	(382)
Net cash used in investing activities	(258,622)	(123,656)
Cash flows from financing activities:
Principal payments on long-term debt	0	(45,000)
Purchase of treasury stock	(155,571)	(35,993)
Restricted stock withholding taxes paid in lieu of issued shares	(62,035)	(92,143)
Proceeds from shares issued for stock-based compensation	20,918	26,321
Other financing activities	(1,290)	(50)
Net cash used in financing activities	(197,978)	(146,865)
Effect of exchange rate fluctuations on cash and cash equivalents	(35,589)	(9,142)
Net (decrease) increase in cash and cash equivalents	(35,158)	168,166
Cash and cash equivalents, beginning of period	667,667	912,672
Cash and cash equivalents, end of period	632,509	1,080,838
Supplemental disclosure of cash flow information:
Income taxes paid	42,055	59,973
Interest paid	12,192	8,721
Fair value of unpaid consideration in connection with acquisitions	$ 3,391	$ 0