CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows from operating activities:
Net income	$ 225,922	$ 271,216
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	274,582	293,199
Stock-based compensation	149,327	108,109
Provision (benefit) for deferred income taxes	409	(75,980)
Amortization of debt issuance costs	2,196	2,210
(Gain) loss on investments	(201)	15,895
Other non-cash reconciling items, net	38,654	22,643
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable	(22,778)	(3,947)
Prepaid expenses and other current assets	(18,097)	(38,132)
Accounts payable and accrued expenses	(83,785)	(59,975)
Deferred revenue	37,051	26,178
Other current liabilities	16,145	(5,901)
Other non-current assets and liabilities	(19,615)	8,367
Net cash provided by operating activities	599,810	563,882
Cash flows from investing activities:
Cash paid for acquisitions, net of cash acquired	(106,326)	(872,099)
Purchases of property and equipment	(254,005)	(125,220)
Capitalization of internal-use software development costs	(144,529)	(124,306)
Purchases of short- and long-term marketable securities	(134,821)	0
Proceeds from sales of short- and long-term marketable securities	200,568	573,274
Proceeds from maturities and redemptions of short- and long-term marketable securities	91,637	120,433
Other, net	(20,766)	(4,206)
Net cash used in investing activities	(368,242)	(432,124)
Cash flows from financing activities:
Proceeds from borrowings under revolving credit facility	90,000	125,000
Repayment of borrowings under revolving credit facility	(70,000)	(50,000)
Proceeds related to the issuance of common stock under stock plans	31,331	29,145
Employee taxes paid related to net share settlement of stock-based awards	(39,606)	(63,142)
Repurchases of common stock	(485,958)	(267,642)
Other, net	(256)	(104)
Net cash used in financing activities	(474,489)	(226,743)
Effects of exchange rate changes on cash, cash equivalents and restricted cash	(710)	(15,260)
Net decrease in cash, cash equivalents and restricted cash	(243,631)	(110,245)
Cash, cash equivalents and restricted cash at beginning of period	543,022	537,751
Cash, cash equivalents and restricted cash at end of period	299,391	427,506
Supplemental disclosures of cash flow information:
Cash paid for income taxes, net of refunds received of $691 and $2,061 for the six months ended June 30, 2023 and 2022, respectively	100,017	113,082
Cash paid for interest expense	3,349	2,875
Cash paid for operating lease liabilities	113,698	111,601
Non-cash activities:
Operating lease right-of-use assets obtained in exchange for operating lease liabilities	196,338	78,189
Purchases of property and equipment and capitalization of internal-use software development costs included in accounts payable and accrued expenses	104,215	39,075
Capitalization of stock-based compensation	36,505	16,180
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	298,612	426,710
Restricted cash	779	796
Cash, cash equivalents and restricted cash	$ 299,391	$ 427,506