CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)
Cash flows from operating activities:
Net income	$ 97,106	$ 133,376
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	135,457	142,595
Stock-based compensation	61,883	56,227
Provision (benefit) for deferred income taxes	4,925	(27,792)
Amortization of debt issuance costs	1,098	1,119
(Gain) loss on investments	(174)	16,536
Other non-cash reconciling items, net	21,602	12,598
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable	(25,251)	(39,198)
Prepaid expenses and other current assets	(26,009)	(64,695)
Accounts payable and accrued expenses	(97,263)	(66,938)
Deferred revenue	36,449	55,394
Other current liabilities	25,834	(1,441)
Other non-current assets and liabilities	(2,158)	4,670
Net cash provided by operating activities	233,499	222,451
Cash flows from investing activities:
Cash paid for acquisitions, net of cash acquired	(20,070)	(872,099)
Purchases of property and equipment	(141,700)	(51,005)
Capitalization of internal-use software development costs	(80,545)	(80,354)
Purchases of short- and long-term marketable securities	(134,191)	0
Proceeds from sales of short- and long-term marketable securities	185,249	571,369
Proceeds from maturities and redemptions of short- and long-term marketable securities	91,637	120,433
Other, net	(20,268)	(5,242)
Net cash used in investing activities	(119,888)	(316,898)
Cash flows from financing activities:
Proceeds from borrowings under revolving credit facility	0	75,000
Proceeds related to the issuance of common stock under stock plans	21,257	21,941
Employee taxes paid related to net share settlement of stock-based awards	(29,894)	(54,819)
Repurchases of common stock	(348,600)	(102,853)
Other, net	(52)	(104)
Net cash used in financing activities	(357,289)	(60,835)
Effects of exchange rate changes on cash, cash equivalents and restricted cash	2,297	(1,462)
Net decrease in cash, cash equivalents and restricted cash	(241,381)	(156,744)
Cash, cash equivalents and restricted cash at beginning of period	543,022	537,751
Cash, cash equivalents and restricted cash at end of period	301,641	381,007
Supplemental disclosures of cash flow information:
Cash paid for income taxes, net of refunds received of $225 and $1,025 for the three months ended March 31, 2023 and 2022, respectively	86,066	50,533
Cash paid for interest expense	2,156	2,156
Cash paid for operating lease liabilities	55,167	54,285
Non-cash activities:
Operating lease right-of-use assets obtained in exchange for operating lease liabilities	102,952	38,582
Purchases of property and equipment and capitalization of internal-use software development costs included in accounts payable and accrued expenses	101,196	48,326
Capitalization of stock-based compensation	14,611	7,803
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	298,800	377,811
Restricted cash	2,841	3,196
Cash, cash equivalents and restricted cash	$ 301,641	$ 381,007