CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities:
Net income	$ 386,464	$ 394,910
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	423,142	444,184
Stock-based compensation	236,344	158,811
Benefit for deferred income taxes	(9,763)	(82,603)
Amortization of debt issuance costs	3,600	3,296
(Gain) loss on investments	(311)	15,895
Other non-cash reconciling items, net	45,202	25,094
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable	(46,262)	26,849
Prepaid expenses and other current assets	(16,103)	(42,871)
Accounts payable and accrued expenses	(60,170)	(64,727)
Deferred revenue	24,146	23,503
Other current liabilities	2,290	(3,808)
Other non-current assets and liabilities	(29,333)	34,645
Net cash provided by operating activities	959,246	933,178
Cash flows from investing activities:
Cash paid for business acquisitions, net of cash acquired	(106,171)	(872,091)
Cash paid for asset acquisition	(36,348)	0
Cash received from equity method investment	1,475	0
Purchases of property and equipment	(387,505)	(176,017)
Capitalization of internal-use software development costs	(208,648)	(171,497)
Purchases of short- and long-term marketable securities	(1,569,837)	0
Proceeds from sales of short- and long-term marketable securities	200,894	575,522
Proceeds from maturities and redemptions of short- and long-term marketable securities	582,641	120,433
Other, net	(8,906)	(4,003)
Net cash used in investing activities	(1,532,405)	(527,653)
Cash flows from financing activities:
Proceeds from borrowings under revolving credit facility	90,000	125,000
Repayment of borrowings under revolving credit facility	(90,000)	(125,000)
Proceeds from the issuance of convertible senior notes, net of issuance costs	1,247,388	0
Proceeds from the issuance of warrants related to convertible senior notes	90,195	0
Purchase of note hedge related to convertible senior notes	(236,555)	0
Proceeds related to the issuance of common stock under stock plans	49,553	45,989
Employee taxes paid related to net share settlement of stock-based awards	(50,910)	(71,656)
Repurchases of common stock	(599,155)	(430,269)
Other, net	(360)	(281)
Net cash provided by (used in) financing activities	500,156	(456,217)
Effects of exchange rate changes on cash, cash equivalents and restricted cash	(7,729)	(27,237)
Net decrease in cash, cash equivalents and restricted cash	(80,732)	(77,929)
Cash, cash equivalents and restricted cash at beginning of period	543,022	537,751
Cash, cash equivalents and restricted cash at end of period	462,290	459,822
Supplemental disclosures of cash flow information:
Cash paid for income taxes, net of refunds received of $7,462 and $8,499 for the nine months ended September 30, 2023 and 2022, respectively	109,820	132,726
Cash paid for interest expense	5,610	5,031
Cash paid for operating lease liabilities	187,888	168,215
Non-cash activities:
Operating lease right-of-use assets obtained in exchange for operating lease liabilities	252,961	139,814
Purchases of property and equipment and capitalization of internal-use software development costs included in accounts payable and accrued expenses	56,345	46,016
Capitalization of stock-based compensation	60,325	24,499
Reconciliation of cash and cash equivalents, and restricted cash:
Cash and cash equivalents	459,907	457,816
Restricted cash	2,383	2,006
Cash, cash equivalents and restricted cash	$ 462,290	$ 459,822