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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2025 | Sep. 30, 2024
Cash flows from operating activities: |  |
Net income | $ 366,959 | $ 365,013
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization | 526,106 | 480,461
Stock-based compensation | 340,177 | 294,333
Provision for deferred income taxes | 24,346 | 938
Amortization of debt issuance costs | 5,176 | 4,933
(Gain) loss on investments | (9,313) | 66
Other non-cash reconciling items, net | 5,341 | 45,691
Changes in operating assets and liabilities, net of effects of acquisitions: |  |
Accounts receivable | (24,566) | 28,092
Prepaid expenses and other current assets | (18,101) | (25,480)
Accounts payable and accrued expenses | (62,494) | (79,191)
Deferred revenue | 3,757 | 13,978
Other current liabilities | (24,562) | 42,350
Other non-current assets and liabilities | 19,355 | 4,199
Net cash provided by operating activities | 1,152,181 | 1,175,383
Cash flows from investing activities: |  |
Cash received (paid) for business acquisitions, net of cash acquired | 790 | (434,066)
Cash paid for asset acquisitions | (29,930) | (4,862)
Purchases of property and equipment | (376,092) | (297,548)
Capitalization of internal-use software development costs | (238,713) | (224,860)
Purchases of short- and long-term marketable securities | (851,265) | (201,641)
Proceeds from sales of short- and long-term marketable securities | 266,582 | 307,701
Proceeds from maturities and redemptions of short- and long-term marketable securities | 1,059,642 | 296,623
Other, net | (5,365) | 4,160
Net cash used in investing activities | (174,351) | (554,493)
Cash flows from financing activities: |  |
Proceeds from borrowings under revolving credit facility | 250,000 | 0
Repayment of borrowings under revolving credit facility | (250,000) | 0
Proceeds from the issuance of convertible senior notes, net of issuance costs | 1,701,796 | 0
Proceeds from the issuance of warrants related to convertible senior notes | 330,855 | 0
Purchase of note hedge related to convertible senior notes | (605,820) | 0
Repayment of convertible senior notes | (1,149,992) | 0
Proceeds related to the issuance of common stock under stock plans | 48,897 | 47,708
Employee taxes paid related to net share settlement of stock awards | (109,981) | (157,115)
Repurchases of common stock | (799,963) | (419,097)
Other, net | (2,126) | (10,291)
Net cash used in financing activities | (586,334) | (538,795)
Effects of exchange rate changes on cash, cash equivalents and restricted cash | 20,742 | 188
Net increase in cash, cash equivalents and restricted cash | 412,238 | 82,283
Cash, cash equivalents and restricted cash at beginning of period | 519,084 | 490,470
Cash, cash equivalents and restricted cash at end of period | 931,322 | 572,753
Supplemental disclosures of cash flow information: |  |
Cash paid for income taxes, net of refunds received of $15,539 and $5,499 for the nine months ended September 30, 2025 and 2024, respectively | 123,021 | 111,430
Cash paid for interest expense | 20,849 | 19,556
Cash paid for operating lease liabilities | 234,337 | 213,459
Non-cash activities: |  |
Operating lease right-of-use assets obtained in exchange for operating lease liabilities | 214,754 | 285,494
Purchases of property and equipment and capitalization of internal-use software development costs included in accounts payable and accrued expenses | 109,042 | 35,660
Capitalization of stock-based compensation | 96,278 | 81,636
Reconciliation of cash and cash equivalents, and restricted cash: |  |
Cash and cash equivalents | 927,933 | 569,749
Restricted cash | 3,389 | 3,004
Cash, cash equivalents and restricted cash | $ 931,322 | $ 572,753

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- Definition Amount of cash inflow (outflow) from financing activity, classified as other. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-14 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 45 -Paragraph 15 -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-15 + Details
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- Definition Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481830/320-10-45-11 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-9 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-12 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-11 + Details
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- Definition The cash outflow from the repayment of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 15 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-15 + Details
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- Definition Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(f)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 15 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-15 + Details
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- Definition Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482913/230-10-50-8 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(1)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 + Details
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- Definition Amount of increase in right-of-use asset obtained in exchange for operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (g)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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- Definition Amount of noncash expense for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 + Details
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