CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Operating Activities
Net income	$ 175,689	$ 152,814
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization and impairment of intangible assets	73,469	58,094
Depreciation and amortization of property and equipment	32,130	29,923
Amortization of debt discount and transaction costs	2,337	7,486
Amortization of deferred costs	43,732	37,175
Amortization of operating lease right-of-use assets	21,134	25,666
Stock-based compensation expense	145,435	168,793
Deferred income tax expense	114	8,202
Effects of exchange rate changes on monetary assets and liabilities denominated in foreign currencies	24,764	7,944
Other non-cash items	21,292	(18,925)
Total adjustments to reconcile net income to net cash provided by operating activities	364,407	324,358
Changes in operating assets and liabilities, net of the effects of acquisitions:
Accounts receivable	174,614	207,883
Inventories	(1,901)	(2,006)
Prepaid expenses and other current assets	(7,312)	(22,928)
Other assets	(39,071)	(44,911)
Income taxes, net	(15,895)	(70,990)
Accounts payable	(15,882)	44,459
Accrued expenses and other current liabilities	(79,092)	(188,413)
Deferred revenues	(108,755)	(43,869)
Other liabilities	(411)	243
Total changes in operating assets and liabilities, net of the effects of acquisitions	(93,705)	(120,532)
Net cash provided by operating activities	446,391	356,640
Investing Activities
Purchases of available-for-sale investments	(2,032)	(12,151)
Proceeds from sales of available-for-sale investments	12,983	0
Proceeds from maturities of available-for-sale investments	9,371	119,771
Purchases of property and equipment	(33,465)	(44,876)
Cash paid for acquisitions, net of cash acquired	0	(2,022,304)
Cash paid for licensing agreements, patents and technology	(4,715)	(4,417)
Other	10,979	6,479
Net cash used in investing activities	(6,879)	(1,957,498)
Financing Activities
Proceeds from issuance of common stock under stock-based compensation plan	1,953	20
Proceeds from term loan credit agreement, net of issuance costs	0	997,947
Proceeds from senior notes, net of issuance costs	0	741,393
Repayment of acquired debt	0	(190,000)
Cash paid for tax withholding on vested stock awards	(78,868)	(101,718)
Cash paid for dividends	0	(91,481)
Other	0	(5,438)
Net cash (used in) provided by financing activities	(76,915)	1,350,723
Effect of exchange rate changes on cash and cash equivalents	(10,993)	(1,648)
Change in cash and cash equivalents	351,604	(251,783)
Cash and cash equivalents at beginning of period	513,993	752,895
Cash and cash equivalents at end of period	$ 865,597	$ 501,112