Roblox (RBLX) 10-Q31 Oct 242024 Q3 Quarterly reportFinancial data

Company Profile

Cover Page

Cover Page - shares	9 Months Ended
Cover Page - shares	Sep. 30, 2024	Oct. 15, 2024
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2024
Document Transition Report	false
Entity File Number	001-39763
Entity Registrant Name	Roblox Corporation
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	20-0991664
Entity Address, Address Line One	970 Park Place
Entity Address, City or Town	San Mateo
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94403
City Area Code	888
Local Phone Number	858-2569
Title of 12(b) Security	Class A Common Stock, $0.0001 par value
Trading Symbol	RBLX
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0001315098
Common Class A
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		607,546,629
Common Class B
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		48,677,643

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 602,631	$ 678,466
Short-term investments	1,720,323	1,514,808
Accounts receivable—net of allowances	385,591	505,769
Prepaid expenses and other current assets	70,702	74,549
Deferred cost of revenue, current portion	588,915	501,821
Total current assets	3,368,162	3,275,413
Long-term investments	1,558,846	1,043,399
Property and equipment—net	642,637	695,360
Operating lease right-of-use assets	626,486	665,107
Deferred cost of revenue, long-term	295,894	283,326
Intangible assets, net	38,486	53,060
Goodwill	142,236	142,129
Other assets	15,215	10,284
Total assets	6,687,962	6,168,078
Current liabilities:
Accounts payable	42,842	60,087
Accrued expenses and other current liabilities	273,694	271,121
Developer exchange liability	330,271	314,866
Deferred revenue—current portion	2,792,396	2,406,292
Total current liabilities	3,439,203	3,052,366
Deferred revenue—net of current portion	1,397,803	1,373,250
Operating lease liabilities	620,257	646,506
Long-term debt, net	1,006,023	1,005,000
Other long-term liabilities	46,218	22,330
Total liabilities	6,509,504	6,099,452
Commitments and contingencies (Note 10)
Stockholders’ equity
Common stock issued, value	62	61
Additional paid-in capital	3,949,491	3,134,946
Accumulated other comprehensive income/(loss)	16,416	1,536
Accumulated deficit	(3,776,064)	(3,060,253)
Total Roblox Corporation Stockholders’ equity	189,905	76,290
Noncontrolling interest	(11,447)	(7,664)
Total Stockholders’ equity	178,458	68,626
Total Liabilities and Stockholders’ equity	$ 6,687,962	$ 6,168,078

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares shares in Thousands	Sep. 30, 2024	Dec. 31, 2023
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, authorized (in shares)	5,000,000	5,000,000
Common stock, issued (in shares)	656,132	631,221
Common stock, outstanding (in shares)	656,132	631,221
Common Class A
Common stock, par value (in dollars per share)	$ 0.0001
Common stock, authorized (in shares)	4,935,000	4,935,000
Common stock, issued (in shares)	607,454	581,135
Common stock, outstanding (in shares)	607,454	581,135
Common Class B
Common stock, par value (in dollars per share)	$ 0.0001
Common stock, authorized (in shares)	65,000	65,000
Common stock, issued (in shares)	48,678	50,086
Common stock, outstanding (in shares)	48,678	50,086

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income Statement [Abstract]
Revenue		$ 918,953	$ 713,225	$ 2,613,796	$ 2,049,335
Cost and expenses:
Cost of revenue	[1]	204,998	163,581	582,421	477,451
Developer exchange fees		231,536	170,719	642,211	519,002
Infrastructure and trust & safety		244,598	218,968	692,596	655,051
Research and development		365,424	321,613	1,089,173	912,469
General and administrative		98,733	97,508	302,184	291,279
Sales and marketing		52,592	40,874	124,416	97,957
Total cost and expenses		1,197,881	1,013,263	3,433,001	2,953,209
Loss from operations		(278,928)	(300,038)	(819,205)	(903,874)
Interest income		46,718	36,442	133,271	102,288
Interest expense		(10,286)	(10,268)	(30,853)	(30,409)
Other income/(expense), net		2,352	(4,262)	(1,309)	(1,425)
Loss before income taxes		(240,144)	(278,126)	(718,096)	(833,420)
Provision for/(benefit from) income taxes		303	682	1,466	177
Consolidated net loss		(240,447)	(278,808)	(719,562)	(833,597)
Net loss attributable to noncontrolling interest		(1,123)	(1,650)	(3,751)	(5,349)
Net loss attributable to common stockholders		$ (239,324)	$ (277,158)	$ (715,811)	$ (828,248)
Net loss per share attributable to common stockholders, basic (in dollars per share)		$ (0.37)	$ (0.45)	$ (1.11)	$ (1.35)
Net loss per share attributable to common stockholders, diluted (in dollars per share)		$ (0.37)	$ (0.45)	$ (1.11)	$ (1.35)
Weighted-average shares used in computing net loss per share attributable to common stockholders—basic (in shares)		650,961	619,350	642,977	612,938
Weighted-average shares used in computing net loss per share attributable to common stockholders—diluted (in shares)		650,961	619,350	642,977	612,938

[1] Depreciation of servers and infrastructure equipment included in infrastructure and trust & safety.

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Consolidated net loss	$ (240,447)	$ (278,808)	$ (719,562)	$ (833,597)
Other comprehensive income/(loss), net of tax:
Foreign currency translation adjustments	1,303	(506)	682	301
Net change in unrealized gains/(losses) on available-for-sale marketable securities	21,223	(1,263)	14,166	(16,443)
Other comprehensive income/(loss), net of tax	22,526	(1,769)	14,848	(16,142)
Total comprehensive loss, including noncontrolling interest	(217,921)	(280,577)	(704,714)	(849,739)
Less: net loss attributable to noncontrolling interest	(1,123)	(1,650)	(3,751)	(5,349)
Less: cumulative translation adjustments attributable to noncontrolling interest	(119)	15	(32)	408
Other comprehensive loss attributable to noncontrolling interest, net of tax	(1,242)	(1,635)	(3,783)	(4,941)
Total comprehensive loss attributable to common stockholders	$ (216,679)	$ (278,942)	$ (700,931)	$ (844,798)

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Class A and Class B Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income/(Loss)	Accumulated Deficit	Non- Controlling Interest
Balances beginning (in shares) at Dec. 31, 2022		604,674
Balance beginning at Dec. 31, 2022	$ 305,035	$ 59	$ 2,213,603	$ 671	$ (1,908,307)	$ (991)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)		7,618
Issuance of common stock upon exercise of stock options	17,641	$ 1	17,640
Issuance of common stock under Employee Stock Purchase Plan (in shares)		1,065
Issuance of common stock under Employee Stock Purchase Plan	29,629		29,629
Vesting of restricted stock units (in shares)		10,231
Stock-based compensation expense	617,288		617,288
Other comprehensive income/(loss)	(16,142)			(16,550)		408
Net loss	(833,597)				(828,248)	(5,349)
Balance ending (in shares) at Sep. 30, 2023		623,588
Balance ending at Sep. 30, 2023	119,854	$ 60	2,878,160	(15,879)	(2,736,555)	(5,932)
Balances beginning (in shares) at Jun. 30, 2023		616,301
Balance beginning at Jun. 30, 2023	164,200	$ 60	2,641,929	(14,095)	(2,459,397)	(4,297)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)		3,047
Issuance of common stock upon exercise of stock options	6,501		6,501
Issuance of common stock under Employee Stock Purchase Plan (in shares)		426
Issuance of common stock under Employee Stock Purchase Plan	9,708		9,708
Vesting of restricted stock units (in shares)		3,814
Stock-based compensation expense	220,022		220,022
Other comprehensive income/(loss)	(1,769)			(1,784)		15
Net loss	(278,808)				(277,158)	(1,650)
Balance ending (in shares) at Sep. 30, 2023		623,588
Balance ending at Sep. 30, 2023	$ 119,854	$ 60	2,878,160	(15,879)	(2,736,555)	(5,932)
Balances beginning (in shares) at Dec. 31, 2023	631,221	631,221
Balance beginning at Dec. 31, 2023	$ 68,626	$ 61	3,134,946	1,536	(3,060,253)	(7,664)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)	7,815	7,815
Issuance of common stock upon exercise of stock options	$ 21,221	$ 1	21,220
Issuance of common stock under Employee Stock Purchase Plan (in shares)		1,530
Issuance of common stock under Employee Stock Purchase Plan	35,767		35,767
Vesting of restricted stock units (in shares)		15,566
Stock-based compensation expense	757,558		757,558
Other comprehensive income/(loss)	14,848			14,880		(32)
Net loss	$ (719,562)				(715,811)	(3,751)
Balance ending (in shares) at Sep. 30, 2024	656,132	656,132
Balance ending at Sep. 30, 2024	$ 178,458	$ 62	3,949,491	16,416	(3,776,064)	(11,447)
Balances beginning (in shares) at Jun. 30, 2024		646,611
Balance beginning at Jun. 30, 2024	111,301	$ 61	3,664,414	(6,229)	(3,536,740)	(10,205)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)		3,529
Issuance of common stock upon exercise of stock options	8,888	$ 1	8,887
Issuance of common stock under Employee Stock Purchase Plan (in shares)		445
Issuance of common stock under Employee Stock Purchase Plan	11,025		11,025
Vesting of restricted stock units (in shares)		5,547
Stock-based compensation expense	265,165		265,165
Other comprehensive income/(loss)	22,526			22,645		(119)
Net loss	$ (240,447)				(239,324)	(1,123)
Balance ending (in shares) at Sep. 30, 2024	656,132	656,132
Balance ending at Sep. 30, 2024	$ 178,458	$ 62	$ 3,949,491	$ 16,416	$ (3,776,064)	$ (11,447)

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash flows from operating activities:
Consolidated net loss	$ (719,562)	$ (833,597)
Adjustments to reconcile net loss including noncontrolling interest to net cash and cash equivalents provided by operations:
Depreciation and amortization expense	175,126	153,611
Stock-based compensation expense	757,558	617,288
Operating lease non-cash expense	88,592	70,801
(Accretion)/amortization on marketable securities, net	(60,442)	(52,219)
Amortization of debt issuance costs	1,023	982
Impairment expense, (gain)/loss on investment and other asset sales, and other, net	2,350	7,747
Changes in operating assets and liabilities, net of effect of acquisitions:
Accounts receivable	119,460	93,174
Prepaid expenses and other current assets	3,340	(1,861)
Deferred cost of revenue	(99,491)	(62,074)
Other assets	(4,922)	(6,189)
Accounts payable	(4,404)	3,855
Accrued expenses and other current liabilities	(15,278)	(2,599)
Developer exchange liability	15,405	7,724
Deferred revenue	409,809	360,098
Operating lease liabilities	(54,621)	(46,837)
Other long-term liabilities	23,882	4,971
Net cash and cash equivalents provided by operating activities	637,825	314,875
Cash flows from investing activities:
Acquisition of property and equipment	(115,786)	(255,470)
Payments related to business combination, net of cash acquired	(2,840)	(3,859)
Purchases of intangible assets	(1,370)	(13,500)
Purchases of investments	(3,474,187)	(3,803,911)
Maturities of investments	2,431,770	956,010
Sales of investments	394,853	346,766
Net cash and cash equivalents used in investing activities	(767,560)	(2,773,964)
Cash flows from financing activities:
Proceeds from issuance of common stock	57,196	47,316
Proceeds from debt issuances	0	14,700
Financing payments related to acquisitions	(4,450)	(750)
Net cash and cash equivalents provided by financing activities	52,746	61,266
Effect of exchange rate changes on cash and cash equivalents	1,154	398
Net increase/(decrease) in cash and cash equivalents	(75,835)	(2,397,425)
Cash and cash equivalents
Beginning of period	678,466	2,977,474
End of period	602,631	580,049
Supplemental disclosure of noncash investing and financing activities:
Property and equipment additions in accounts payable and accrued expenses and other liabilities	$ 23,255	$ 62,248

Organization and Description of

Organization and Description of Business	9 Months Ended
Organization and Description of Business	Sep. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Description of Business	1. Organization and Description of Business Description of Business Roblox Corporation (the “Company” or “Roblox”) was incorporated under the laws of the state of Delaware in March 2004. The Company operates a free to use immersive platform for connection and communication (the “Roblox Platform” or “Platform”) where people come to create, play, work, learn, and connect with each other in experiences built by our global community of creators. Users are free to immerse themselves in experiences on the Roblox Platform and can acquire experience-specific enhancements or avatar items by using purchased Robux, our virtual currency. Any user can be a developer or creator on the Platform using Roblox Studio, a set of free software tools. Developers and creators build the experiences that are published on Roblox and can earn Robux by monetizing their experience, creating and selling or reselling avatar items, or creating and selling Roblox Studio plugins.

Basis of Presentation and Summa

Basis of Presentation and Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2024
Accounting Policies [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	2. Basis of Presentation and Summary of Significant Accounting Policies Fiscal Year The Company’s fiscal year ends on December 31. For example, references to fiscal year 2024 and 2023 refer to the fiscal year ending December 31, 2024 and December 31, 2023, respectively. Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“U.S. GAAP”), and applicable rules and regulations of the Securities and Exchange Commission (“SEC”), regarding interim financial reporting. Accordingly, they do not include all disclosures normally required in annual consolidated financial statements prepared in accordance with U.S. GAAP. Therefore, these unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023, which was filed with the SEC on February 21, 2024. In the Company’s opinion, the information contained herein reflects all adjustments necessary for a fair presentation of the Company’s results of operations, financial position, cash flows, and stockholders’ equity. All such adjustments are of a normal, recurring nature. The results of operations for the three and nine months ended September 30, 2024 shown in this report are not necessarily indicative of the results to be expected for the full year ending December 31, 2024 or any other interim period. For a discussion of the Company’s significant accounting policies, refer to the header “Foreign Currency Transactions” below, as well as the significant accounting policies as described in the Company’s consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023, which was filed with the SEC on February 21, 2024. Principles of Consolidation The condensed consolidated financial statements include the accounts of the Company and subsidiaries over which the Company has control. All intercompany transactions and balances have been eliminated. The condensed consolidated financial statements include 100% of the accounts of wholly owned and majority owned subsidiaries, and the ownership interest of minority investors is recorded as noncontrolling interest. Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Significant estimates and assumptions reflected in the condensed consolidated financial statements include, but are not limited to, the estimated period of time the virtual items are available to the user, which is estimated as the average lifetime of a paying user, and the estimated amount of consumable and durable virtual items purchased for which the Company lacks specific information that is used for revenue recognition, the estimated amount of expected breakage related to prepaid card sales, useful lives of property and equipment and intangible assets, fair value of assets and liabilities acquired through acquisitions, accrued liabilities (including accrued developer exchange fees), contingent liabilities, valuation of deferred tax assets and liabilities, stock-based compensation expense, the discount rate used in measuring our operating lease liabilities, the carrying value of operating lease right-of-use assets, evaluation of recoverability of goodwill, intangible assets and long-lived assets, and as necessary, estimates of fair value to measure impairment losses. Management believes that the estimates, and judgments upon which they rely, are reasonable based upon information available to them at the time that these estimates and judgments are made. Actual results could differ from those estimates and any such differences may be material to the condensed consolidated financial statements. To the extent that there are material differences between these estimates and actual results, the Company’s condensed consolidated financial statements will be affected. Change in Accounting Estimate At the onset of the second quarter of 2024, we updated our estimated paying user life from 28 months to 27 months. Based on the carrying amount of deferred revenue and deferred cost of revenue as of March 31, 2024, the change resulted in an increase in revenue and cost of revenue of $26.4 million and $5.4 million, respectively, during the three months ended September 30, 2024 and $85.3 million and $17.8 million, respectively, during the nine months ended September 30, 2024. It is estimated that this change will increase our fiscal year 2024 revenue and cost of revenue by $98.0 million and $20.4 million, respectively. The estimated paying user life was 28 months during the three and nine months ended September 30, 2023. Refer to the heading “Basis of Presentation and Summary of Significant Accounting Policies — Revenue Recognition Policy” as described in the Company’s consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023, which was filed with the SEC on February 21, 2024, for a complete discussion on the Company’s revenue recognition policies. Foreign Currency Transactions Beginning January 1, 2024, the functional currency of certain non-U.S. dollar functional currency international subsidiaries was re-assessed from the U.S. dollar to the local currency that the international subsidiary operates in. Prior to January 1, 2024, the functional currency of the Company’s international subsidiaries was primarily the U.S. dollar. The effects of the changes in functional currency were not significant to our condensed consolidated financial statements. The Company translates the financial statements of non-U.S. dollar functional currency subsidiaries to U.S. dollars using the period-end exchange rate for assets and liabilities and the average exchange rate for the period for revenues and expenses. The effects of foreign currency translation are included in stockholders’ equity and periodic movements are summarized as a line item in the condensed consolidated statements of comprehensive loss. The Company reflects foreign exchange transaction gains and losses resulting from the conversion of the transaction currency to the functional currency, which includes gains and losses from the remeasurement of assets and liabilities, as a component of other income/(expense), net. Recent Accounting Pronouncements Recent Accounting Pronouncements Not Yet Adopted In November 2023, the FASB issued ASU 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures,” which requires public entities to disclose expanded information about their reportable segment(s)’ significant expenses and other segment items on an interim and annual basis. The ASU does not change how a public entity identifies or aggregates its operating segments. The ASU is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. The ASU is required to be applied retrospectively to all prior periods presented in the financial statements once adopted. The Company is evaluating the disclosure requirements related to the new standard and anticipates the ASU to result in additional required disclosures once adopted. In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures,” which requires public entities to disclose specific tax rate reconciliation categories, as well as income taxes paid disaggregated by jurisdiction, amongst other disclosure enhancements. The ASU is effective for financial statements issued for annual periods beginning after December 15, 2024, with early adoption permitted. The ASU can be adopted on a prospective or retrospective basis. The Company is evaluating the disclosure requirements related to the new standard.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	9 Months Ended
Revenue from Contracts with Customers	Sep. 30, 2024
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	3. Revenue from Contracts with Customers The following table summarizes revenue by region based on the billing country of users (in thousands, except percentages): Three Months Ended September 30, 2024 2023 Amount Percentage of Revenue Amount Percentage of Revenue United States and Canada (1) $ 583,011 64 % $ 458,563 65 % Europe 167,758 18 128,412 18 Asia-Pacific, including Australia and New Zealand 95,507 10 73,772 10 Rest of world 72,677 8 52,478 7 Total $ 918,953 100 % $ 713,225 100 % Nine Months Ended September 30, 2024 2023 Amount Percentage of Revenue Amount Percentage of Revenue United States and Canada (1) $ 1,658,442 63 % $ 1,323,849 65 % Europe 476,729 18 370,474 18 Asia-Pacific, including Australia and New Zealand 275,836 11 208,002 10 Rest of world 202,789 8 147,010 7 Total $ 2,613,796 100 % $ 2,049,335 100 % The Company’s revenues in the United States were 60% and 59% of consolidated revenue for the three and nine months ended September 30, 2024, respectively, and were 60% for each of the three and nine months ended September 30, 2023, respectively. No individual country, other than the United States, exceeded 10% of the Company’s consolidated revenue for any period presented. Durable virtual items accounted for 92% of virtual item-related revenue for each of the three and nine months ended September 30, 2024, respectively, and 92% and 91% in the three and nine months ended September 30, 2023, respectively. Consumable virtual items accounted for 8% of virtual item-related revenue for each of the three and nine months ended September 30, 2024, respectively, and 8% and 9% in the three and nine months ended September 30, 2023, respectively. Deferred Revenue The Company receives payments from its users based on the payment terms established in its contracts. Such payments are initially recorded to deferred revenue and are recognized into revenue as the Company satisfies its performance obligations. The aggregate amount of revenue allocated to unsatisfied performance obligations is included in our deferred revenue balances. The increase in deferred revenue for the nine months ended September 30, 2024 was driven by sales during the period exceeding revenue recognized from the satisfaction of our performance obligations, which includes the revenue recognized during the period that was included in the current portion of deferred revenue at the beginning of the period. During the nine months ended September 30, 2024, we recognized $1,983.4 million of revenue that was included in the current deferred revenue balance as of December 31, 2023.

Leases

Leases	9 Months Ended
Leases	Sep. 30, 2024
Leases [Abstract]
Leases	4. Leases The Company took possession of a data center leased space in the first quarter of 2024, with lease payments – net of leasehold incentives – totaling $95.4 million over a seven year lease term. In September, 2024, the Company de-recognized $70.3 million of both the right-of-use assets and lease liabilities associated with this data center lease due to an early termination. The early termination did not have a material impact on the results of operations during the three and nine months ended September 30, 2024. Sublease On February 7, 2024, the Company executed a lease assignment as sub-lessee pursuant to which the Company subleased approximately 133,137 square feet of office space in San Mateo, California for a lease term of approximately four years (the “2024 Sub-Lessee Agreement”). Concurrent with the execution of the 2024 Sub-Lessee Agreement, the Company executed a sublease as sub-lessor pursuant to which it subleased approximately 61,773 square feet of its San Mateo, California corporate headquarters to the sub-lessee for a lease term of approximately three years (the “2024 Sub-Lessor Agreement”). The total lease payments due by the Company over the sublease term under the 2024 Sub-Lessee Agreement are $38.9 million and the Company took possession of the assigned space in April 2024. The total lease payments due to the Company over the sublease term under the 2024 Sub-Lessor Agreement are approximately $13.0 million and the Company provided possession to the sub-lessee in April 2024.
Leases	4. Leases The Company took possession of a data center leased space in the first quarter of 2024, with lease payments – net of leasehold incentives – totaling $95.4 million over a seven year lease term. In September, 2024, the Company de-recognized $70.3 million of both the right-of-use assets and lease liabilities associated with this data center lease due to an early termination. The early termination did not have a material impact on the results of operations during the three and nine months ended September 30, 2024. Sublease On February 7, 2024, the Company executed a lease assignment as sub-lessee pursuant to which the Company subleased approximately 133,137 square feet of office space in San Mateo, California for a lease term of approximately four years (the “2024 Sub-Lessee Agreement”). Concurrent with the execution of the 2024 Sub-Lessee Agreement, the Company executed a sublease as sub-lessor pursuant to which it subleased approximately 61,773 square feet of its San Mateo, California corporate headquarters to the sub-lessee for a lease term of approximately three years (the “2024 Sub-Lessor Agreement”). The total lease payments due by the Company over the sublease term under the 2024 Sub-Lessee Agreement are $38.9 million and the Company took possession of the assigned space in April 2024. The total lease payments due to the Company over the sublease term under the 2024 Sub-Lessor Agreement are approximately $13.0 million and the Company provided possession to the sub-lessee in April 2024.

Cash Equivalents and Investment

Cash Equivalents and Investments	9 Months Ended
Cash Equivalents and Investments	Sep. 30, 2024
Investments, Debt and Equity Securities [Abstract]
Cash Equivalents and Investments	5. Cash Equivalents and Investments The following is a summary of the Company’s cash equivalents and short-term and long-term investments (in thousands): As of September 30, 2024 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Cash Equivalents Short-Term Investments Long-Term Investments Debt Securities Level 1 Money market funds $ 513,512 $ — $ — $ 513,512 $ 513,512 $ — $ — U.S. Treasury securities 2,150,181 7,485 (127) 2,157,539 30,929 1,382,112 744,498 Subtotal 2,663,693 7,485 (127) 2,671,051 544,441 1,382,112 744,498 Level 2 U.S. agency securities 269,994 172 (65) 270,101 — 22,505 247,596 Commercial paper 285,884 — (2) 285,882 — 285,882 — Corporate debt securities 587,872 6,817 (20) 594,669 — 27,917 566,752 Subtotal 1,143,750 6,989 (87) 1,150,652 — 336,304 814,348 Total Debt Securities $ 3,807,443 $ 14,474 $ (214) $ 3,821,703 $ 544,441 $ 1,718,416 $ 1,558,846 Equity Securities Level 1 Mutual funds (1) $ 1,907 $ — $ 1,907 $ — Total Equity Securities $ 1,907 $ — $ 1,907 $ — Total Cash Equivalents and Investments $ 3,807,443 $ 14,474 $ (214) $ 3,823,610 $ 544,441 $ 1,720,323 $ 1,558,846 As of December 31, 2023 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Cash Equivalents Short-Term Investments Long-Term Investments Debt Securities Level 1 Money market funds $ 614,888 $ — $ — $ 614,888 $ 614,888 $ — $ — U.S. Treasury securities 1,692,700 2,007 (2,547) 1,692,160 — 1,155,218 536,942 Subtotal 2,307,588 2,007 (2,547) 2,307,048 614,888 1,155,218 536,942 Level 2 U.S. agency securities 286,007 27 (197) 285,837 — 137,151 148,686 Commercial paper 184,465 — — 184,465 14,827 169,638 — Corporate debt securities 409,037 2,066 (1,262) 409,841 — 52,070 357,771 Subtotal 879,509 2,093 (1,459) 880,143 14,827 358,859 506,457 Total Debt Securities $ 3,187,097 $ 4,100 $ (4,006) $ 3,187,191 $ 629,715 $ 1,514,077 $ 1,043,399 Equity Securities Level 1 Mutual funds (1) $ 731 $ — $ 731 $ — Total Equity Securities $ 731 $ — $ 731 $ — Total Cash Equivalents and Investments $ 3,187,097 $ 4,100 $ (4,006) $ 3,187,922 $ 629,715 $ 1,514,808 $ 1,043,399 (1) The equity securities relate to the Company’s nonqualified deferred compensation plan and are held in a rabbi trust. Refer to Note 14, “Employee and Director Benefits”, to the notes to the condensed consolidated financial statements for more information. As of September 30, 2024, all of the Company’s short-term debt investments have contractual maturities of one year or less and all of the Company’s long-term debt investments have contractual maturities between one Changes in market interest rates, credit risk of borrowers and overall market liquidity, amongst other factors, may cause our short-term and long-term debt investments to fall below their amortized cost basis, resulting in unrealized losses. For those debt securities in an unrealized loss position as of September 30, 2024, the unrealized losses were primarily driven by increases in interest rates following the date of purchase and the Company does not intend to sell, nor is it more likely than not it will be required to sell, such secu rities before recovering the amortized cost basis . The following table presents fair values and gross unrealized losses, aggregated by investment category and the length of time that individual securities have been in a continuous loss position (in thousands): As of September 30, 2024 Less Than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses U.S. Treasury securities $ 141,181 $ (82) $ 62,000 $ (45) $ 203,181 $ (127) U.S. agency securities 47,443 (65) — — 47,443 (65) Commercial paper 10,797 (2) — — 10,797 (2) Corporate debt securities 11,138 (11) 3,032 (9) 14,170 (20) Total $ 210,559 $ (160) $ 65,032 $ (54) $ 275,591 $ (214) As of December 31, 2023 Less Than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses U.S. Treasury securities $ 486,424 $ (2,547) $ — $ — $ 486,424 $ (2,547) U.S. agency securities 182,475 (197) — — 182,475 (197) Corporate debt securities 248,287 (1,262) — — 248,287 (1,262) Total $ 917,186 $ (4,006) $ — $ — $ 917,186 $ (4,006)

Acquisitions

Acquisitions	9 Months Ended
Acquisitions	Sep. 30, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
Acquisitions	6. Acquisitions Speechly, Inc. On September 18, 2023 (the “Speechly Acquisition Date”), the Company acquired all outstanding equity interests of Speechly, Inc. and its wholly owned Finnish subsidiary Speechly Oy (together, “Speechly”). Speechly was a privately held company, that operated a speech recognition software focused on voice moderation. The acquisition has been accounted for as a business combination. The consideration totaled $10.1 million, which included (i) $4.8 million of cash paid on the Speechly Acquisition Date and (ii) $5.3 million of cash held back until certain post-acquisition conditions are satisfied. The following table summarizes the Company’s allocation of the purchase consideration based on the fair value of assets acquired and liabilities assumed at the Speechly Acquisition Date (in thousands): September 18, 2023 Cash and cash equivalents $ 970 Other current assets acquired 111 Intangible assets, net Developed technology, useful life of five years 2,800 Goodwill 7,536 Other current liabilities assumed $ (1,117) Other long-term liabilities assumed (182) Total purchase price $ 10,118 Goodwill is attributable to the assembled workforce and anticipated synergies arising from the acquisition. The goodwill recognized is not deductible for income tax purposes.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
Goodwill and Intangible Assets	Sep. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	7. Goodwill and Intangible Assets Goodwill The following table represents the changes to goodwill during the nine months ended September 30, 2024 (in thousands): Carrying Amount Balance as of December 31, 2023 $ 142,129 Foreign currency translation adjustments 107 Balance as of September 30, 2024 $ 142,236 There are no accumulated impairment losses for any period presented. Intangible Assets The following tables present details of the Company’s finite-lived intangible assets as of September 30, 2024 and December 31, 2023 (in thousands): As of September 30, 2024 Gross Carrying Amount Accumulated Amortization Expense Net Carrying Developed technology $ 75,495 $ (50,744) $ 24,751 Patents 14,200 (1,775) 12,425 Assembled workforce 10,000 (9,625) 375 Trade name 500 (308) 192 Total intangible assets $ 100,195 $ (62,452) $ 37,743 As of December 31, 2023 Gross Carrying Amount Accumulated Amortization Expense Net Carrying Developed technology $ 75,455 $ (39,411) $ 36,044 Patents 14,200 (650) 13,550 Assembled workforce 10,000 (7,374) 2,626 Trade name 500 (233) 267 Total intangible assets $ 100,155 $ (47,668) $ 52,487 The above tables do not include $0.7 million and $0.6 million of indefinite lived intangible assets as of September 30, 2024 and December 31, 2023, respectively. Amortization expense related to our finite-lived intangible assets was $4.7 million and $14.8 million for the three and nine months ended September 30, 2024, respectively, and $5.2 million and $14.2 million for the three and nine months ended September 30, 2023, respectively. Expected future amortization expenses related to the Company’s finite-lived intangible assets as of September 30, 2024 are as follows (in thousands): Year ending December 31: Remainder of 2024 $ 4,180 2025 15,735 2026 6,700 2027 3,137 2028 1,940 Thereafter 6,051 Total remaining amortization expense $ 37,743

Other Balance Sheet Components

Other Balance Sheet Components	9 Months Ended
Other Balance Sheet Components	Sep. 30, 2024
Other Balance Sheet Components [Abstract]
Other Balance Sheet Components	8. Other Balance Sheet Components Prepaid expenses and other current assets Prepaid expenses and other current assets consisted of the following (in thousands): As of September 30, December 31, Prepaid expenses $ 47,419 $ 48,555 Accrued interest receivable 16,265 14,697 Other current assets 7,018 11,297 Total prepaid expenses and other current assets $ 70,702 $ 74,549 Property and equipment, net Property and equipment, net, consisted of the following (in thousands): As of September 30, December 31, Servers and related equipment and software $ 919,932 $ 914,989 Computer hardware and software licenses 50,980 43,732 Furniture and fixtures 2,084 520 Leasehold improvements 102,551 101,785 Construction in progress 154,013 77,043 Total property and equipment 1,229,560 1,138,069 Less accumulated depreciation and amortization expense (586,923) (442,709) Property and equipment—net $ 642,637 $ 695,360 Construction in progress primarily relates to leasehold improvements for the Company’s leased office buildings and network equipment infrastructure to support the Company’s data centers. In the third quarter of 2024, the Company re-assessed the estimated useful life of certain software licenses, resulting in the acceleration of their remaining depreciation expense of $17.9 million within infrastructure and trust & safety expenses. Total depreciation and amortization expense of property and equipment was $63.9 million and $160.4 million for the three and nine months ended September 30, 2024, respectively, and $48.4 million and $139.4 million for the three and nine months ended September 30, 2023, respectively. Accrued expenses and other current liabilities Accrued expenses and other current liabilities consisted of the following (in thousands): As of September 30, December 31, Accrued operating expenses $ 60,486 $ 51,921 Short term operating lease liabilities 132,977 111,293 Accrued interest on the 2030 Notes 16,146 6,458 Taxes payable 45,493 59,632 Accrued compensation and other employee related liabilities 13,174 32,125 Other current liabilities 5,418 9,692 Total accrued expenses and other current liabilities $ 273,694 $ 271,121

Debt

Debt	9 Months Ended
Debt	Sep. 30, 2024
Debt Disclosure [Abstract]
Debt	9. Debt 2030 Notes On October 29, 2021, the Company issued $1.0 billion aggregate principal amount of its 3.875% Senior Notes due 2030 (the “2030 Notes”). The 2030 Notes mature on May 1, 2030. The 2030 Notes bear interest at a rate of 3.875% per annum. Interest on the 2030 Notes is payable semi-annually in arrears on May 1 and November 1 of each year, commencing on May 1, 2022. The aggregate proceeds from offering of the 2030 Notes were approximately $987.5 million, after deducting lenders costs and other issuance costs incurred by the Company. The issuance costs of $12.5 million are amortized into interest expense using the effective interest method over the term of the 2030 Notes. The Company may voluntarily redeem the 2030 Notes, in whole or in part, under the following circumstances: (1) at any time prior to November 1, 2024, the Company may on any one or more occasions redeem up to 40% of the aggregate principal amount of the 2030 Notes at a redemption price of 103.875% of the principal amount including accrued and unpaid interest, if any, with the net cash proceeds of certain equity offerings; provided that (1) at least 50% of the aggregate principal amount of 2030 Notes originally issued remains outstanding immediately after the occurrence of such redemption (excluding 2030 Notes held by the Company and its subsidiaries); and (2) the redemption occurs within 180 days of the date of the closing of such equity offerings. (2) on or after November 1, 2024, the Company may redeem all or a part of the 2030 Notes at the following redemption prices (expressed as percentages of principal amount), plus accrued and unpaid interest, if any, to, but excluding, the applicable redemption date: Year Percentage 2024 101.938 % 2025 100.969 % 2026 and thereafter 100.000 % (3) at any time prior to November 1, 2024, the Company may redeem all or a part of the 2030 Notes at a redemption price equal to 100% of the principal amount of 2030 Notes redeemed, including accrued and unpaid interest, if any, plus the applicable “make-whole” premium set forth in the indenture governing the 2030 Notes (the “Indenture”) as of the date of such redemption; and (4) in connection with any tender offer for the 2030 Notes, including an offer to purchase (as defined in the Indenture), if holders of not less than 90% in aggregate principal amount of the outstanding 2030 Notes validly tender and do not withdraw such notes in such tender offer and the Company (or any third party making such a tender offer in lieu of the Company) purchases all of the 2030 Notes validly tendered and not withdrawn by such holders, the Company (or such third party) will have the right, upon not less than 10, but not more than 60 days’ prior notice, given not more than 30 days following such purchase date to the holders of the 2030 Notes and the trustee, to redeem all of the 2030 Notes that remain outstanding following such purchase at a redemption price equal to the price offered to each holder of 2030 Notes (excluding any early tender or incentive fee) in such tender offer plus to the extent not included in the tender offer payment, accrued and unpaid interest, if any. In certain circumstances involving a change of control triggering event (as defined in the Indenture), the Company will be required to make an offer to repurchase all, or at the holder’s option, any part, of each holder’s 2030 Notes at a repurchase price equal to 101% of the principal amount, plus accrued and unpaid interest, if any, to the applicable repurchase date. The 2030 Notes are unsecured obligations and the Indenture contains covenants limiting the Company and its subsidiaries’ ability to: (i) create certain liens and enter into sale and lease-back transactions; (ii) create, assume, incur or guarantee certain indebtedness; or (iii) consolidate or merge with or into, or sell or otherwise dispose of all of substantially all of the Company and its subsidiaries’ assets to another person. These covenants are subject to a number of limitations and exceptions set forth in the Indenture and non-compliance with these covenants may result in the accelerated repayment of the 2030 Notes and any accrued and unpaid interest. As of September 30, 2024, the Company was in compliance with all of its covenants under the Indenture. The net carrying amount of the 2030 Notes, which is presented as a component of long-term debt in the Company’s condensed consolidated financial statements, was as follows (in thousands): As of September 30, December 31, 2030 Notes Principal $ 1,000,000 $ 1,000,000 Unamortized issuance costs (8,677) (9,700) Net carrying amount $ 991,323 $ 990,300 Interest expense related to the 2030 Notes was as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Contractual interest expense $ 9,688 $ 9,688 $ 29,064 $ 29,063 Amortization of debt issuance costs 344 331 1,023 982 Total interest expense $ 10,032 $ 10,019 $ 30,087 $ 30,045 The debt issuance costs for the 2030 Notes are amortized to interest expense over the term of the 2030 Notes using an annual effective interest rate of 4.05%. As of September 30, 2024 and December 31, 2023, the estimated fair value of the 2030 Notes was approximately $931.6 million and $891.8 million, respectively, determined based on the last trading price of the 2030 Notes during the reporting period (a Level 2 input). Joint Venture Financing Refer to Note 15, “Joint Venture”, in the notes to the condensed consolidated financial statements for additional information on debt issued by the Company’s consolidated subsidiary, Roblox China Holding Corp.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
Commitments and Contingencies	Sep. 30, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	10. Commitments and Contingencies Lease Commitments —The Company leases office facilities and space for data center operations under operating leases expiring in various years through 2035. Certain of these arrangements have free or escalating rent payment provisions and optional renewal clauses. All of the Company’s leases are accounted for as operating leases. There has been no material change in the Company’s lease commitments during the nine months ended September 30, 2024, except for (i) the early termination of a data center lease in the third quarter of 2024 and (ii) lease commitments primarily related to office facilities and data centers in the ordinary course of business. Refer to Note 4, “Leases” in the notes to the condensed consolidated financial statements for additional information. Purchase Obligations —Non-cancellable contractual purchase obligations primarily consist of contracts associated with data center and software vendors. There has been no material change in the Company’s purchase obligations during the nine months ended September 30, 2024, other than non-cancellable purchase commitments made in the ordinary course of business, primarily related to data center and software vendors. Letters of Credit —The Company has letters of credit in connection with its operating leases which are not reflected in the Company’s condensed consolidated balance sheets as of September 30, 2024 and December 31, 2023. There have been no material changes to the Company’s letters of credit during the nine months ended September 30, 2024. Legal Proceedings —The Company is and, from time to time may in the future become, involved in legal proceedings, claims and litigation in the ordinary course of business. As of September 30, 2024 and December 31, 2023, the Company accrued for immaterial losses related to litigation matters that the Company believes to be probable and for which an amount of loss can be reasonably estimated. The Company considered the progress of these cases, the opinions and views of its legal counsel and outside advisors, its experience and settlements in similar cases, and other factors in arriving at the conclusion that a potential loss was probable. The Company cannot determine a reasonable estimate of the maximum possible loss or range of loss for all of these matters given that they are at various stages of the litigation process and each case is subject to the inherent uncertainties of litigation. The Company may incur substantial legal fees, which are expensed as incurred, in defending against these legal proceedings. The maximum amount of liability that may ultimately result from any of these matters cannot be predicted with absolute certainty and the ultimate resolution of one or more of these matters could ultimately have a material adverse effect on our operations. On August 1, 2023, a putative class action was filed against the Company in the United States District Court for the Northern District of California, captioned Colvin v. Roblox (the “Colvin matter”), asserting various claims arising from allegations that minors used third-party virtual casinos to gamble Robux. On December 15, 2023, the Company filed a motion to dismiss and on March 26, 2024, the motion to dismiss was granted in part and denied in part, allowing plaintiffs’ negligence and California Unfair Competition Law claims to proceed. On March 28, 2024, a supplemental order clarified that plaintiffs’ claims for unjust enrichment and equitable relief could proceed as well. On April 9, 2024, plaintiffs filed an amended complaint realleging the California Consumer Legal Remedies Act and New York General Business Law claims that had been dismissed. Separately, on March 14, 2024, Gentry v. Roblox was filed in the United States District Court for the Northern District of California premised on substantially identical allegations as the Colvin matter. On April 18, 2024, the Gentry v. Roblox matter was consolidated with the Colvin matter. Plaintiffs filed a consolidated complaint on April 23, 2024. The consolidated complaint seeks monetary damages, including actual, punitive, and statutory damages, restitution, attorneys’ fees and costs, and declaratory and injunctive relief. The Company filed a motion to dismiss the consolidated complaint on May 14, 2024, which the court granted in part and denied in part on September 19, 2024. The Court dismissed with prejudice plaintiffs’ fraud-based claims and claims for injunctive relief, but allowed plaintiffs’ claims under California’s Unfair Competition Law and for negligence and unjust enrichment to proceed. The Company intends to defend itself vigorously against all claims asserted. At this time, the Company is unable to reasonably estimate the loss or range of loss, if any, arising from the above-referenced matter. Indemnification —In the ordinary course of business, the Company enters into agreements that may include indemnification provisions. Pursuant to such agreements, the Company may indemnify, hold harmless and defend an indemnified party for losses suffered or incurred by the indemnified party. Some of the provisions will limit losses to those arising from third-party actions. In some cases, the indemnification will continue after the termination of the agreement. The maximum potential amount of future payments the Company could be required to make under these provisions is not determinable. To date, the Company has not incurred material costs to defend lawsuits or settle claims related to these indemnification provisions. The Company has also entered into indemnification agreements with its directors and officers that may require the Company to indemnify its directors and officers against liabilities that may arise by reason of their status or service as directors or officers to the fullest extent permitted by Delaware corporate law. To date, the Company has not incurred any material costs and has not accrued any liabilities related to such obligations. The Company also has directors’ and officers’ insurance.

Stockholders' Equity

Stockholders' Equity	9 Months Ended
Stockholders' Equity	Sep. 30, 2024
Stockholders' Equity Note [Abstract]
Stockholders' Equity	11. Stockholders’ Equity As of September 30, 2024, the Company had 4,935.0 million shares of Class A common stock authorized, with a par value of $0.0001 per share, 65.0 million shares of Class B common stock authorized, with a par value of $0.0001 per share, and 100.0 million shares of preferred stock authorized, with a par value of $0.0001 per share. Holders of Class A common stock are entitled to one vote per share. Holders of Class B common stock are entitled to 20 votes per share. During the first quarter of 2024 and 2023, respectively, 1.4 million and 1.3 million shares of Class B common stock held by entities affiliated with Mr. Baszucki, Founder, President, CEO and Chair of our Board of Directors (the “CEO”) were converted to Class A common stock. Class A and Class B common stock are referred to as common stock throughout the notes to the condensed consolidated financial statements, unless otherwise noted. The Company had reserved shares of common stock for future issuance as follows (in thousands): As of September 30, December 31, Stock options outstanding 32,160 40,159 Restricted Stock Units (“RSUs”) outstanding 36,467 39,846 Performance Stock Units (“PSUs”) (1) 2,304 905 CEO Long-Term Performance Award (1)(2) — 11,500 2020 Equity Incentive Plan 95,773 66,114 2020 Employee Stock Purchase Plan 20,855 16,075 Stock warrants outstanding 264 264 Unregistered stock awards (“RSAs”) outstanding 50 149 Total 187,873 175,012 (1) Represents the shares of common stock reserved for future issuance at the maximum achievement levels. (2) On March 1, 2024, the Leadership Development and Compensation Committee (i) approved the cancellation of the CEO Long-Term Performance Award, which was previously granted to the CEO under the 2017 Amended and Restated Equity Incentive Plan and (ii) granted Mr. Baszucki a new PSU award and RSU award. The PSUs and RSUs granted to Mr. Baszucki on March 1, 2024 are included in those respective rows above as of September 30, 2024. Refer to Note 12, “Stock-Based Compensation Expense”, to the notes to the condensed consolidated financial statements for further discussion.

Stock-based Compensation Expens

Stock-based Compensation Expense	9 Months Ended
Stock-based Compensation Expense	Sep. 30, 2024
Share-Based Payment Arrangement [Abstract]
Stock-based Compensation Expense	12. Stock-Based Compensation Expense The Company has three equity incentive plans: its 2004 Incentive Stock Plan (the “2004 Plan”), its 2017 Amended and Restated Equity Incentive Plan (the “2017 Plan”) and its 2020 Equity Incentive Plan (the “2020 Plan”). The Company’s stockholders approved the 2020 Plan in 2020, which became effective in connection with the Company’s March 10, 2021 direct listing of its Class A common stock (the “Direct Listing”). The 2017 Plan was terminated effective immediately prior to the direct listing in connection with the effectiveness of the Company’s 2020 Plan, and accordingly no shares are available for issuance under the 2017 Plan. The 2004 Plan was terminated on the effective date of the 2017 Plan, and accordingly no shares are available for issuance under the 2004 Plan. Any outstanding stock awards under the 2004 Plan and 2017 Plan remain outstanding, subject to the terms of the applicable plan and award agreements, until such shares are issued under those stock awards, by exercise of stock options or settlement of RSUs or until those stock awards become vested or expired by their terms. Additionally, in 2020, the Company’s stockholders approved the 2020 Employee Stock Purchase Plan (the “2020 ESPP”), which became effective in connection with the Direct Listing. Stock-based compensation expense Stock-based compensation expense included in the condensed consolidated statements of operations was as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Infrastructure and trust & safety $ 29,078 $ 24,483 $ 84,326 $ 65,710 Research and development 189,064 155,651 542,867 432,676 General and administrative 36,345 32,200 102,786 97,673 Sales and marketing 10,678 7,688 27,579 21,229 Total stock-based compensation expense $ 265,165 $ 220,022 $ 757,558 $ 617,288 Stock Options The following table summarizes the Company’s stock option activity (in thousands, except per option data and remaining contractual term): Options Outstanding Number of Weighted-Average Weighted-Average Remaining Aggregate Balances as of December 31, 2023 40,159 $ 2.98 5.16 $ 1,716,171 Granted — — Cancelled, forfeited, and expired (184) $ 4.79 Exercised (7,815) $ 2.72 Balances as of September 30, 2024 32,160 $ 3.04 4.48 $ 1,325,679 Exercisable as of September 30, 2024 31,825 $ 3.02 4.46 $ 1,312,577 Vested and expected to vest at September 30, 2024 32,160 $ 3.04 4.48 $ 1,325,679 RSUs and RSAs The following table summarizes the Company’s RSU and RSA activity (in thousands, except per share data): RSUs RSAs Number of Weighted-Average Number of Weighted-Average Unvested as of December 31, 2023 39,846 $ 42.25 149 $ 46.00 Granted 16,867 $ 38.95 — — Vested and released (15,566) $ 42.93 (74) $ 46.00 Cancelled (4,680) $ 41.16 (25) $ 46.00 Unvested as of September 30, 2024 36,467 $ 40.57 50 $ 46.00 CEO PSUs and RSUs CEO Long-Term Performance Award In February 2021, the Leadership Development and Compensation Committee granted a PSU award (the “CEO Long-Term Performance Award”) under the 2017 Plan, which provided our CEO the opportunity to earn a maximum number of 11,500,000 shares of Class A common stock. The CEO Long-Term Performance Award would have vested upon the satisfaction of a service condition and achievement of certain Class A common stock price targets over five years. The Leadership Development and Compensation Committee approved the cancellation of the CEO-Long Term Performance Award on March 1, 2024, as further discussed below. The Class A common stock price targets were not achieved and therefore no shares vested under the CEO Long-Term Performance Award prior to its cancellation. 2024 CEO PSUs and RSUs On March 1, 2024 (the “Modification Date”), the Leadership Development and Compensation Committee (i) approved the cancellation of the CEO Long-Term Performance Award and (ii) granted Mr. Baszucki a new PSU award (the “2024 CEO PSU Award”) and RSU award (collectively, the “2024 CEO Award”). As of the Modification Date, $84.4 million of stock-based compensation expense remained unrecognized related to the CEO Long-Term Performance Award. The Company determined that the concurrent cancellation of the CEO Long-Term Performance Award and granting of the 2024 CEO Award represented a modification of the CEO Long-Term Performance Award. As of the Modification Date, total subsequent stock-based compensation expense to be recognized was measured as (i) the remaining unrecognized stock-based compensation expense related to the grant date fair value of the CEO Long-Term Performance Award and (ii) the incremental fair value resulting from the modification, if any. To estimate the incremental fair value resulting from the modification (if any), the Company first estimated the fair value of the modified CEO Long-Term Performance Award immediately prior to the Modification Date using a model based on multiple stock price outcomes developed through the use of a Monte Carlo simulation that incorporated into the valuation the possibility that the stock price targets may not be satisfied. A Monte Carlo simulation model requires the use of various assumptions, including the underlying stock price, volatility, and the risk-free interest rate as of the valuation date, corresponding to the length of time remaining in the performance period, and expected dividend yield. On the Modification Date, the estimated fair value of the CEO Long-Term Performance Award immediately prior to the modification was greater than the estimated fair value of the 2024 CEO Award (which was generally estimated based on the Modification Date fair value of the Class A common stock underlying the 2024 CEO Award, with consideration of the probability of achievement against the pre-established performance measures). As a result, the modification did not result in any incremental stock-based compensation expense. As of the Modification Date, total subsequent stock-based compensation expense to be recognized totaled $84.4 million. Of the total estimated stock-based compensation expense, 75% of the value was allocated to the 2024 CEO PSU Award with the remaining 25% allocated to the RSUs, based on the relative value of the two awards on the Modification Date. Under the 2024 CEO PSU Award, the number of shares that can be earned will range from 0% to 200% of the target number of shares based on the Company’s performance against two independent performance measures relative to pre-established thresholds during a two-year performance period ending on December 31, 2025. The two independent performance measures include the Company’s cumulative (i) bookings during the performance period, as defined in the grant agreement with the CEO and (ii) Adjusted EBITDA during the performance period, which correlates to the covenant adjusted EBITDA calculation used in certain covenant calculations specified in the indenture governing our 2030 Notes (the “PSU Adjusted EBITDA”). Further, the awards are subject to Mr. Baszucki’s continuous service with the Company through each vesting date, with the initial vesting date to occur in the first quarter of 2026 (of which 67% of the award earned, if any, will vest) and the remaining vesting dates to occur in four equal quarterly installments beginning in the second quarter of 2026. The Company will recognize stock-based compensation expense for the 2024 CEO PSU Award on an accelerated attribution method over the requisite service period of each separately vesting tranche. Actual performance against the pre-established threshold under the 2024 CEO PSU Award will have no impact on the subsequent stock-based compensation expense recognized. The target number of the 2024 CEO PSU Award was 446,534 in aggregate, with 80% of the target number of shares allocated to the cumulative bookings performance measure and 20% of the target number of shares allocated to the cumulative PSU Adjusted EBITDA performance measure. The Company recorded $7.3 million of stock-based compensation expense related to the 2024 CEO PSU Award and $25.1 million of stock-based compensation expense related to the 2024 CEO PSU Award and CEO Long-Term Performance Award, in total, during the three and nine months ended September 30, 2024, respectively, within general and administrative expenses. The Company recorded $12.3 million and $36.5 million of stock-based compensation expense related to the CEO Long-Term Performance Award during the three and nine months ended September 30, 2023, respectively, within general and administrative expenses. The number of RSUs granted under the 2024 CEO Award totaled 148,844 and the RSUs will vest quarterly over a three-year service period beginning March 1, 2024, subject to Mr. Baszucki’s continued service with the Company on each vesting date. Other PSUs 2024 Executive PSU Awards During the first quarter of 2024, the Leadership Development and Compensation Committee granted PSU awards to certain members of management (the “2024 Executive PSU Awards”). The vesting requirements, performance metrics, and performance period of the 2024 Executive PSU Awards are consistent with those of the 2024 CEO PSU Award. The target number of 2024 Executive PSU Awards was 353,241 in total, with 80% of the target number of shares allocated to the cumulative bookings performance measure and 20% of the target number of shares allocated to the cumulative PSU Adjusted EBITDA performance measure. The Company recognizes stock-based compensation expense for the 2024 Executive PSU Awards based upon the per-share grant date fair value of $41.32 on an accelerated attribution method over the requisite service period of each separately vesting tranche. At each reporting period, the amount of stock-based compensation is determined based on the probability of achievement against the pre-established performance measures and if necessary, a cumulative catch-up adjustment is recorded to reflect any revised estimates regarding the probability of achievement. During the three and nine months ended September 30, 2024, $5.2 million and $7.9 million of stock-based compensation expense was recorded related to the 2024 Executive PSU Awards, respectively. 2023 PSU Awards During the second quarter of 2023, the Leadership Development and Compensation Committee granted PSU awards to certain members of management (the “2023 PSU Awards”). The number of shares that can be earned will range from 0% to 200% of the target number of shares, based on the Company’s performance against two independent performance measures relative to pre-established thresholds during a two-year performance period ending on December 31, 2024. The two independent performance measures include the Company’s cumulative (i) bookings during the performance period, as defined in the respective grant agreements with each employee and (ii) PSU Adjusted EBITDA during the performance period. Further, the awards are subject to continuous employment, with the first vesting to occur in the first quarter of 2025 (in which 50% of any awards earned will vest) and the second vesting to occur in the second quarter of 2026 (in which the remaining 50% of any awards earned will vest). As of September 30, 2024, the number of shares under the 2023 PSU Awards that can be earned at target performance totaled 213,502, with 80% of the target number of shares allocated to the cumulative bookings performance measure and 20% of the target number of shares allocated to the cumulative PSU Adjusted EBITDA performance measure. The Company recognizes stock-based compensation expense for the 2023 PSU Awards based upon the per-share grant date fair value of $45.70 on an accelerated attribution method over the requisite service period of each separately vesting tranche. At each reporting period, the amount of stock-based compensation is determined based on the probability of achievement against the pre-established performance measures and if necessary, a cumulative catch-up adjustment is recorded to reflect any revised estimates regarding the probability of achievement. On August 1, 2024, Michael Guthrie, the Company’s Chief Financial Officer, notified Roblox of his intent to resign as Chief Financial Officer to pursue personal interests. The Company entered into a Separation and Transition Agreement with Mr. Guthrie on September 30, 2024 (the “Transition Agreement”), pursuant to which Mr. Guthrie’s employment with the Company will terminate upon the commencement of employment of the Company’s next Chief Financial Officer. Following his termination of employment, Mr. Guthrie will continue to serve the Company as an advisor until March 1, 2025, or, if later, the one-month anniversary of his termination date. Pursuant to his agreement, on the determination date (as defined in his applicable PSU agreement and which is expected to occur in the first quarter of fiscal 2025), Mr. Guthrie will vest into the first 50% of his 2023 PSUs, contingent upon the Company achieving performance measures, provided he remains a service provider until December 31, 2024. The Company has concluded that this constitutes a modification of the remaining requisite service period on September 30, 2024, and any remaining expense will be recognized prospectively over the remaining three-month requisite service period. The Company recorded net stock-based compensation expense of $3.2 million and $4.8 million during the three and nine months ended September 30, 2024, respectively, and stock-based compensation expense of $1.4 million and $2.9 million during the three and nine months ended September 30, 2023, respectively, related to the 2023 PSU Awards. 2022 PSU Awards During the second quarter of 2022, the Leadership Development and Compensation Committee granted PSU awards to certain members of management (the “2022 PSU Awards”). On the grant date, the target number of 2022 PSU Awards was 207,284. The number of shares that can be earned will range from 0% to 200% of the target number of shares, based on the Company’s stock price performance and achievement of certain stock price hurdles during the last quarter of the second year through the end of the third year of a three-year performance period (the “2022 PSU Awards Stock Price Hurdles”) and subject to continuous employment through such date. The Company estimated the grant date fair value of the 2022 PSU Awards using a model based on multiple stock price outcomes developed through the use of a Monte Carlo simulation which incorporates into the valuation the possibility that the 2022 PSU Awards Stock Price Hurdles may not be satisfied. The grant date fair value of the 2022 PSU Awards was estimated to be $43.13 per share, and the Company estimates that it will recognize total stock-based compensation expense of approximately $6.0 million using the accelerated attribution method over the derived service period of each tranche which is equal to five measurement periods commencing with the last quarter of the second year and ending with the last quarter of the third year. If the 2022 PSU Awards Stock Price Hurdles are met sooner than the derived service period, the stock-based compensation expense will be adjusted to reflect the cumulative expense associated with the vested award. Stock-based compensation expense will be recognized over the requisite service period if the members of management continue to provide service to the Company, regardless of whether the 2022 PSU Awards Stock Price Hurdles are achieved. The Company recorded stock-based compensation expense of $0.1 million during the three months ended September 30, 2024 and a net stock-based compensation benefit of $0.4 million during the nine months ended September 30, 2024 related to the 2022 PSU Awards, primarily driven by the departure of an executive in the second quarter of 2024, and stock-based compensation expense of $0.2 million and $2.2 million during the three and nine months ended September 30, 2023, respectively. Employee Stock Purchase Plan The Company recorded $3.2 million and $14.7 million of stock-based compensation expense related to the 2020 ESPP during the three and nine months ended September 30, 2024, respectively, and $8.7 million and $24.1 million during the three and nine months ended September 30, 2023, respectively.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income/(Loss)	9 Months Ended
Accumulated Other Comprehensive Income/(Loss)	Sep. 30, 2024
Equity [Abstract]
Accumulated Other Comprehensive Income/(Loss)	13. Accumulated Other Comprehensive Income/(Loss) The following table shows a summary of changes in accumulated other comprehensive income/(loss) by component for the nine months ended September 30, 2024 (in thousands): Foreign Currency Translation Unrealized Gains/ (Losses) on Available-For-Sale Debt Securities Total Balance as of December 31, 2023 $ 1,442 $ 94 $ 1,536 Other comprehensive income/(loss), net of tax, before reclassifications 714 12,677 13,391 Amounts reclassified from accumulated other comprehensive income/(loss), net of tax — 1,489 1,489 Change in accumulated other comprehensive income/(loss), net of tax 714 14,166 14,880 Balance as of September 30, 2024 $ 2,156 $ 14,260 $ 16,416

Employee and Director Benefits

Employee and Director Benefits	9 Months Ended
Employee and Director Benefits	Sep. 30, 2024
Retirement Benefits [Abstract]
Employee and Director Benefits	14. Employee and Director Benefits Deferred Compensation Plan The Company established the Roblox Corporation Nonqualified Deferred compensation Plan (as amended, the “NQDC Plan”) for its non-employee directors and a select group of management employees. Eligible participants may voluntarily elect to participate in the NQDC Plan. Unless otherwise determined by the committee that administers the NQDC Plan, eligible employee participants may elect annually to defer up to 90% of their base salary, up to 100% of their cash bonus compensation (if any) and up to 65% of any RSUs or PSUs granted under the Company’s 2020 Plan (if any), and eligible non-employee director participants may elect annually to defer up to 100% of their cash director fees and any RSUs granted under the Company’s 2020 Plan. Obligations of the Company under the NQDC Plan represent at all times unsecured general obligations of the Company to pay deferred compensation in the future in accordance with the terms of the NQDC Plan. Cash amounts deferred under the plan may only later be settled in cash and are credited or charged with the performance of investment options offered under the NQDC Plan as elected by the participants. The amount credited or charged to each participant’s cash deferrals are based on the performance of a hypothetical portfolio of investments which are tracked by an administrator, with such credits or charges included as a component of operating expenses in the Company’s condensed consolidated statements of operations. The cash obligations due to participants are presented as other long-term liabilities on the Company’s condensed consolidated balance sheet. The Company generally funds the cash obligations associated with the NQDC Plan by purchasing investments that match the hypothetical investment choices made by the plan participants. The investments (and any uninvested cash) are held in a rabbi trust in order to receive certain tax benefits. The rabbi trust is subject to creditor claims in the event of insolvency, but the assets held in the rabbi trust are not available for general corporate purposes. The investments held in the rabbi trust are presented as short-term investments and any uninvested cash is presented as cash and cash equivalents on the Company’s condensed consolidated balance sheet. As it relates to any deferred RSUs and PSUs, the Company ensures enough shares of its Class A common stock are reserved to settle all obligations under the NQDC Plan. These obligations are settled on the date(s) elected by the participant. The accounting for the RSUs and PSUs deferred under the NQDC Plan is consistent with the accounting for non-deferred RSUs and PSUs.

Joint Venture

Joint Venture	9 Months Ended
Joint Venture	Sep. 30, 2024
Equity Method Investments and Joint Ventures [Abstract]
Joint Venture	15. Joint Venture Background In February 2019, the Company entered into a joint venture agreement with Songhua River Investment Limited (“Songhua”), an affiliate of Tencent Holdings Ltd., (“Tencent Holdings”), to create Roblox China Holding Corp. (in which Roblox holds a 51% ownership interest as it relates to the voting shares). Songhua contributed $50.0 million in capital in exchange for a 49% ownership interest in Roblox China Holding Corp. The business of the joint venture (either directly or indirectly through the joint venture’s wholly owned subsidiaries) is to engage in the (i) development, localization, and licensing of the Roblox application to Shenzhen Tencent Computer Systems Co., Ltd. for operation and publication as a game in China, and (ii) development, localization, and licensing to creators of a Chinese version of the Roblox Studio and to oversee relations with local Chinese developers. The joint venture is consolidated into the Company’s condensed consolidated financial statements as the Company maintains a controlling financial interest through voting rights, while the minority member of the joint venture does not have substantive participating rights or veto rights. The Company classifies the 49% ownership interest held by Songhua as a noncontrolling interest on its condensed consolidated balance sheet. Joint Venture Financing On May 10, 2023, Roblox China Holding Corp. (the “Borrower”) issued $30.0 million aggregate principal debt which matures on May 10, 2026 (the “2026 Notes”), unless earlier prepaid by the Borrower or converted by the holders into the Borrower’s voting shares. Further, the Borrower, at its sole election, may extend the maturity date by two years. The 2026 Notes were funded by the Company and Songhua (the “Lenders”) in the amount of $15.3 million and $14.7 million, respectively. The 2026 Notes bear interest at a rate of 6.0% per annum, with accrued interest payable on the final maturity date. At any point, the Lenders may voluntarily convert the 2026 Notes into voting shares of the Borrower, provided that immediately after such conversion, the Lenders continue to own the same percentage of voting shares in the Borrower as they did immediately prior to the conversion. The conversion ratio will be determined at the time of such conversion (if any), and will be determined by dividing the then fair value of the Borrower’s voting shares (as mutually agreed to by the Lenders and Borrower) into the sum of the unpaid principal and accrued interest. The portion of the 2026 Notes outstanding to Songhua is reflected in the Company’s condensed consolidated financial statements as long-term debt, net, at its principal amount, while the portion outstanding to the Company – including any related interest expense – is eliminated upon consolidation. Interest expense related to the 2026 Notes was $0.2 million and $0.7 million for the three and nine months ended September 30, 2024, respectively, and was $0.2 million and $0.3 million for the three and nine months ended September 30, 2023, respectively.

Income Taxes

Income Taxes	9 Months Ended
Income Taxes	Sep. 30, 2024
Income Tax Disclosure [Abstract]
Income Taxes	16. Income Taxes The Company is subject to federal and state income tax in the United States, as well as foreign tax jurisdictions in which it conducts business. The Company does not provide for U.S. income taxes or foreign withholding taxes on the undistributed earnings of its profitable foreign subsidiaries because it intends to permanently reinvest such earnings in foreign operations. The provision for/(benefit from) income taxes for the three and nine months ended September 30, 2024 and 2023 consisted of immaterial federal, state and foreign income taxes. The Company continues to maintain a full valuation allowance on its net deferred tax assets as it is not likely that the deferred assets will be utilized. The primary difference between the effective tax rate and the federal statutory tax rate relates to the valuation allowance on the Company’s deferred tax assets.

Basic and Diluted Net Loss Per

Basic and Diluted Net Loss Per Common Share	9 Months Ended
Basic and Diluted Net Loss Per Common Share	Sep. 30, 2024
Earnings Per Share [Abstract]
Basic and Diluted Net Loss Per Common Share	17. Basic and Diluted Net Loss Per Common Share The following table presents the calculation of basic and diluted net loss per share (in thousands, except per share data): Three Months Ended Nine Months Ended September 30, September 30, 2024 2023 2024 2023 Basic and diluted net loss per share Numerator Consolidated net loss $ (240,447) $ (278,808) $ (719,562) $ (833,597) Less: net loss attributable to noncontrolling interest (1,123) (1,650) (3,751) (5,349) Net loss attributable to common stockholders $ (239,324) $ (277,158) $ (715,811) $ (828,248) Denominator Weighted-average common shares used in computing net loss per share attributable to common stockholders, based and diluted 650,961 619,350 642,977 612,938 Net loss per share attributable to common stockholders, basic and diluted $ (0.37) $ (0.45) $ (1.11) $ (1.35) The potential shares of common stock that were excluded from the computation of diluted net loss per share because including them would have been anti-dilutive are as follows (in thousands): As of September 30, 2024 2023 Stock options outstanding 32,160 43,306 RSUs outstanding 36,467 36,880 2020 ESPP 1,665 3,406 2023 PSUs Awards based on performance target achievement at period-end (1) 43 — Stock warrants outstanding 264 264 RSAs outstanding 50 276 Total 70,649 84,132 (1) Represents the hypothetical number of shares that would have been earned under the Company’s 2023 PSU Awards had the performance period ended on the balance sheet date. Except for the 2023 PSU Awards, all other PSUs were excluded from the above table because the respective stock price or performance targets had not been met as of the periods presented.

Subsequent Events

Subsequent Events	9 Months Ended
Subsequent Events	Sep. 30, 2024
Subsequent Events [Abstract]
Subsequent Events	18. Subsequent Events In October 2024, the Company started moving employees that remained at its current headquarters in San Mateo to its new campus in San Mateo, and the move is expected to be completed during the fourth quarter of 2024. As of September 30, 2024, the carrying value of the operating lease right-of-use asset and the related leasehold improvements, and the associated lease liability as it relates to the buildings the Company is exiting, is approximately $143.0 million and $126.0 million, respectively, with remaining lease terms ranging between three

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Pay vs Performance Disclosure
Net loss attributable to common stockholders	$ (239,324)	$ (277,158)	$ (715,811)	$ (828,248)

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Sep. 30, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Basis of Presentation and Sum_2

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2024
Accounting Policies [Abstract]
Fiscal Year	Fiscal Year The Company’s fiscal year ends on December 31. For example, references to fiscal year 2024 and 2023 refer to the fiscal year ending December 31, 2024 and December 31, 2023, respectively.
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“U.S. GAAP”), and applicable rules and regulations of the Securities and Exchange Commission (“SEC”), regarding interim financial reporting. Accordingly, they do not include all disclosures normally required in annual consolidated financial statements prepared in accordance with U.S. GAAP. Therefore, these unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023, which was filed with the SEC on February 21, 2024. In the Company’s opinion, the information contained herein reflects all adjustments necessary for a fair presentation of the Company’s results of operations, financial position, cash flows, and stockholders’ equity. All such adjustments are of a normal, recurring nature. The results of operations for the three and nine months ended September 30, 2024 shown in this report are not necessarily indicative of the results to be expected for the full year ending December 31, 2024 or any other interim period. For a discussion of the Company’s significant accounting policies, refer to the header “Foreign Currency Transactions” below, as well as the significant accounting policies as described in the Company’s consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023, which was filed with the SEC on February 21, 2024.
Principles of Consolidation	Principles of Consolidation The condensed consolidated financial statements include the accounts of the Company and subsidiaries over which the Company has control. All intercompany transactions and balances have been eliminated. The condensed consolidated financial statements include 100% of the accounts of wholly owned and majority owned subsidiaries, and the ownership interest of minority investors is recorded as noncontrolling interest.
Use of Estimates	Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Significant estimates and assumptions reflected in the condensed consolidated financial statements include, but are not limited to, the estimated period of time the virtual items are available to the user, which is estimated as the average lifetime of a paying user, and the estimated amount of consumable and durable virtual items purchased for which the Company lacks specific information that is used for revenue recognition, the estimated amount of expected breakage related to prepaid card sales, useful lives of property and equipment and intangible assets, fair value of assets and liabilities acquired through acquisitions, accrued liabilities (including accrued developer exchange fees), contingent liabilities, valuation of deferred tax assets and liabilities, stock-based compensation expense, the discount rate used in measuring our operating lease liabilities, the carrying value of operating lease right-of-use assets, evaluation of recoverability of goodwill, intangible assets and long-lived assets, and as necessary, estimates of fair value to measure impairment losses. Management believes that the estimates, and judgments upon which they rely, are reasonable based upon information available to them at the time that these estimates and judgments are made. Actual results could differ from those estimates and any such differences may be material to the condensed consolidated financial statements. To the extent that there are material differences between these estimates and actual results, the Company’s condensed consolidated financial statements will be affected.
Foreign Currency Transactions	Foreign Currency Transactions Beginning January 1, 2024, the functional currency of certain non-U.S. dollar functional currency international subsidiaries was re-assessed from the U.S. dollar to the local currency that the international subsidiary operates in. Prior to January 1, 2024, the functional currency of the Company’s international subsidiaries was primarily the U.S. dollar. The effects of the changes in functional currency were not significant to our condensed consolidated financial statements. The Company translates the financial statements of non-U.S. dollar functional currency subsidiaries to U.S. dollars using the period-end exchange rate for assets and liabilities and the average exchange rate for the period for revenues and expenses. The effects of foreign currency translation are included in stockholders’ equity and periodic movements are summarized as a line item in the condensed consolidated statements of comprehensive loss. The Company reflects foreign exchange transaction gains and losses resulting from the conversion of the transaction currency to the functional currency, which includes gains and losses from the remeasurement of assets and liabilities, as a component of other income/(expense), net.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Recent Accounting Pronouncements Not Yet Adopted In November 2023, the FASB issued ASU 2023-07, “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures,” which requires public entities to disclose expanded information about their reportable segment(s)’ significant expenses and other segment items on an interim and annual basis. The ASU does not change how a public entity identifies or aggregates its operating segments. The ASU is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. The ASU is required to be applied retrospectively to all prior periods presented in the financial statements once adopted. The Company is evaluating the disclosure requirements related to the new standard and anticipates the ASU to result in additional required disclosures once adopted. In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures,” which requires public entities to disclose specific tax rate reconciliation categories, as well as income taxes paid disaggregated by jurisdiction, amongst other disclosure enhancements. The ASU is effective for financial statements issued for annual periods beginning after December 15, 2024, with early adoption permitted. The ASU can be adopted on a prospective or retrospective basis. The Company is evaluating the disclosure requirements related to the new standard.

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	9 Months Ended
Revenue from Contracts with Customers (Tables)	Sep. 30, 2024
Revenue from Contract with Customer [Abstract]
Schedule of Revenue Disaggregated by Geography	The following table summarizes revenue by region based on the billing country of users (in thousands, except percentages): Three Months Ended September 30, 2024 2023 Amount Percentage of Revenue Amount Percentage of Revenue United States and Canada (1) $ 583,011 64 % $ 458,563 65 % Europe 167,758 18 128,412 18 Asia-Pacific, including Australia and New Zealand 95,507 10 73,772 10 Rest of world 72,677 8 52,478 7 Total $ 918,953 100 % $ 713,225 100 % Nine Months Ended September 30, 2024 2023 Amount Percentage of Revenue Amount Percentage of Revenue United States and Canada (1) $ 1,658,442 63 % $ 1,323,849 65 % Europe 476,729 18 370,474 18 Asia-Pacific, including Australia and New Zealand 275,836 11 208,002 10 Rest of world 202,789 8 147,010 7 Total $ 2,613,796 100 % $ 2,049,335 100 % The Company’s revenues in the United States were 60% and 59% of consolidated revenue for the three and nine months ended September 30, 2024, respectively, and were 60% for each of the three and nine months ended September 30, 2023, respectively.

Cash Equivalents and Investme_2

Cash Equivalents and Investments (Tables)	9 Months Ended
Cash Equivalents and Investments (Tables)	Sep. 30, 2024
Investments, Debt and Equity Securities [Abstract]
Schedule of Cash Equivalents and Short and Long-Term Investments	The following is a summary of the Company’s cash equivalents and short-term and long-term investments (in thousands): As of September 30, 2024 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Cash Equivalents Short-Term Investments Long-Term Investments Debt Securities Level 1 Money market funds $ 513,512 $ — $ — $ 513,512 $ 513,512 $ — $ — U.S. Treasury securities 2,150,181 7,485 (127) 2,157,539 30,929 1,382,112 744,498 Subtotal 2,663,693 7,485 (127) 2,671,051 544,441 1,382,112 744,498 Level 2 U.S. agency securities 269,994 172 (65) 270,101 — 22,505 247,596 Commercial paper 285,884 — (2) 285,882 — 285,882 — Corporate debt securities 587,872 6,817 (20) 594,669 — 27,917 566,752 Subtotal 1,143,750 6,989 (87) 1,150,652 — 336,304 814,348 Total Debt Securities $ 3,807,443 $ 14,474 $ (214) $ 3,821,703 $ 544,441 $ 1,718,416 $ 1,558,846 Equity Securities Level 1 Mutual funds (1) $ 1,907 $ — $ 1,907 $ — Total Equity Securities $ 1,907 $ — $ 1,907 $ — Total Cash Equivalents and Investments $ 3,807,443 $ 14,474 $ (214) $ 3,823,610 $ 544,441 $ 1,720,323 $ 1,558,846 As of December 31, 2023 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Cash Equivalents Short-Term Investments Long-Term Investments Debt Securities Level 1 Money market funds $ 614,888 $ — $ — $ 614,888 $ 614,888 $ — $ — U.S. Treasury securities 1,692,700 2,007 (2,547) 1,692,160 — 1,155,218 536,942 Subtotal 2,307,588 2,007 (2,547) 2,307,048 614,888 1,155,218 536,942 Level 2 U.S. agency securities 286,007 27 (197) 285,837 — 137,151 148,686 Commercial paper 184,465 — — 184,465 14,827 169,638 — Corporate debt securities 409,037 2,066 (1,262) 409,841 — 52,070 357,771 Subtotal 879,509 2,093 (1,459) 880,143 14,827 358,859 506,457 Total Debt Securities $ 3,187,097 $ 4,100 $ (4,006) $ 3,187,191 $ 629,715 $ 1,514,077 $ 1,043,399 Equity Securities Level 1 Mutual funds (1) $ 731 $ — $ 731 $ — Total Equity Securities $ 731 $ — $ 731 $ — Total Cash Equivalents and Investments $ 3,187,097 $ 4,100 $ (4,006) $ 3,187,922 $ 629,715 $ 1,514,808 $ 1,043,399 (1) The equity securities relate to the Company’s nonqualified deferred compensation plan and are held in a rabbi trust. Refer to Note 14, “Employee and Director Benefits”, to the notes to the condensed consolidated financial statements for more information.
Schedule of Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value	The following table presents fair values and gross unrealized losses, aggregated by investment category and the length of time that individual securities have been in a continuous loss position (in thousands): As of September 30, 2024 Less Than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses U.S. Treasury securities $ 141,181 $ (82) $ 62,000 $ (45) $ 203,181 $ (127) U.S. agency securities 47,443 (65) — — 47,443 (65) Commercial paper 10,797 (2) — — 10,797 (2) Corporate debt securities 11,138 (11) 3,032 (9) 14,170 (20) Total $ 210,559 $ (160) $ 65,032 $ (54) $ 275,591 $ (214) As of December 31, 2023 Less Than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses U.S. Treasury securities $ 486,424 $ (2,547) $ — $ — $ 486,424 $ (2,547) U.S. agency securities 182,475 (197) — — 182,475 (197) Corporate debt securities 248,287 (1,262) — — 248,287 (1,262) Total $ 917,186 $ (4,006) $ — $ — $ 917,186 $ (4,006)

Acquisitions (Tables)

Acquisitions (Tables)	9 Months Ended
Acquisitions (Tables)	Sep. 30, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
Schedule of Fair Value of Assets Acquired and Liabilities Assumed	The following table summarizes the Company’s allocation of the purchase consideration based on the fair value of assets acquired and liabilities assumed at the Speechly Acquisition Date (in thousands): September 18, 2023 Cash and cash equivalents $ 970 Other current assets acquired 111 Intangible assets, net Developed technology, useful life of five years 2,800 Goodwill 7,536 Other current liabilities assumed $ (1,117) Other long-term liabilities assumed (182) Total purchase price $ 10,118

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	9 Months Ended
Goodwill and Intangible Assets (Tables)	Sep. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The following table represents the changes to goodwill during the nine months ended September 30, 2024 (in thousands): Carrying Amount Balance as of December 31, 2023 $ 142,129 Foreign currency translation adjustments 107 Balance as of September 30, 2024 $ 142,236
Schedule of Finite-Lived Intangible Assets	The following tables present details of the Company’s finite-lived intangible assets as of September 30, 2024 and December 31, 2023 (in thousands): As of September 30, 2024 Gross Carrying Amount Accumulated Amortization Expense Net Carrying Developed technology $ 75,495 $ (50,744) $ 24,751 Patents 14,200 (1,775) 12,425 Assembled workforce 10,000 (9,625) 375 Trade name 500 (308) 192 Total intangible assets $ 100,195 $ (62,452) $ 37,743 As of December 31, 2023 Gross Carrying Amount Accumulated Amortization Expense Net Carrying Developed technology $ 75,455 $ (39,411) $ 36,044 Patents 14,200 (650) 13,550 Assembled workforce 10,000 (7,374) 2,626 Trade name 500 (233) 267 Total intangible assets $ 100,155 $ (47,668) $ 52,487
Schedule of Expected Future Amortization Expenses Related to the Finite-lived Intangible Assets	Expected future amortization expenses related to the Company’s finite-lived intangible assets as of September 30, 2024 are as follows (in thousands): Year ending December 31: Remainder of 2024 $ 4,180 2025 15,735 2026 6,700 2027 3,137 2028 1,940 Thereafter 6,051 Total remaining amortization expense $ 37,743

Other Balance Sheet Components

Other Balance Sheet Components (Tables)	9 Months Ended
Other Balance Sheet Components (Tables)	Sep. 30, 2024
Other Balance Sheet Components [Abstract]
Schedule of Prepaid Expenses and Other Current Assets	Prepaid expenses and other current assets consisted of the following (in thousands): As of September 30, December 31, Prepaid expenses $ 47,419 $ 48,555 Accrued interest receivable 16,265 14,697 Other current assets 7,018 11,297 Total prepaid expenses and other current assets $ 70,702 $ 74,549
Schedule of Property and Equipment, Net	Property and equipment, net, consisted of the following (in thousands): As of September 30, December 31, Servers and related equipment and software $ 919,932 $ 914,989 Computer hardware and software licenses 50,980 43,732 Furniture and fixtures 2,084 520 Leasehold improvements 102,551 101,785 Construction in progress 154,013 77,043 Total property and equipment 1,229,560 1,138,069 Less accumulated depreciation and amortization expense (586,923) (442,709) Property and equipment—net $ 642,637 $ 695,360
Schedule of Accrued Expenses and Other Current Liabilities	Accrued expenses and other current liabilities consisted of the following (in thousands): As of September 30, December 31, Accrued operating expenses $ 60,486 $ 51,921 Short term operating lease liabilities 132,977 111,293 Accrued interest on the 2030 Notes 16,146 6,458 Taxes payable 45,493 59,632 Accrued compensation and other employee related liabilities 13,174 32,125 Other current liabilities 5,418 9,692 Total accrued expenses and other current liabilities $ 273,694 $ 271,121

Debt (Tables)

Debt (Tables)	9 Months Ended
Debt (Tables)	Sep. 30, 2024
Debt Disclosure [Abstract]
Schedule of Debt Instrument Redemption	Year Percentage 2024 101.938 % 2025 100.969 % 2026 and thereafter 100.000 %
Schedule of Long-term Debt	The net carrying amount of the 2030 Notes, which is presented as a component of long-term debt in the Company’s condensed consolidated financial statements, was as follows (in thousands): As of September 30, December 31, 2030 Notes Principal $ 1,000,000 $ 1,000,000 Unamortized issuance costs (8,677) (9,700) Net carrying amount $ 991,323 $ 990,300
Schedule of Interest Expense	Interest expense related to the 2030 Notes was as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Contractual interest expense $ 9,688 $ 9,688 $ 29,064 $ 29,063 Amortization of debt issuance costs 344 331 1,023 982 Total interest expense $ 10,032 $ 10,019 $ 30,087 $ 30,045

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	9 Months Ended
Stockholders' Equity (Tables)	Sep. 30, 2024
Stockholders' Equity Note [Abstract]
Schedule of Common Stock for Future Issuance	The Company had reserved shares of common stock for future issuance as follows (in thousands): As of September 30, December 31, Stock options outstanding 32,160 40,159 Restricted Stock Units (“RSUs”) outstanding 36,467 39,846 Performance Stock Units (“PSUs”) (1) 2,304 905 CEO Long-Term Performance Award (1)(2) — 11,500 2020 Equity Incentive Plan 95,773 66,114 2020 Employee Stock Purchase Plan 20,855 16,075 Stock warrants outstanding 264 264 Unregistered stock awards (“RSAs”) outstanding 50 149 Total 187,873 175,012 (1) Represents the shares of common stock reserved for future issuance at the maximum achievement levels. (2) On March 1, 2024, the Leadership Development and Compensation Committee (i) approved the cancellation of the CEO Long-Term Performance Award, which was previously granted to the CEO under the 2017 Amended and Restated Equity Incentive Plan and (ii) granted Mr. Baszucki a new PSU award and RSU award. The PSUs and RSUs granted to Mr. Baszucki on March 1, 2024 are included in those respective rows above as of September 30, 2024. Refer to Note 12, “Stock-Based Compensation Expense”, to the notes to the condensed consolidated financial statements for further discussion.

Stock-based Compensation Expe_2

Stock-based Compensation Expense (Tables)	9 Months Ended
Stock-based Compensation Expense (Tables)	Sep. 30, 2024
Share-Based Payment Arrangement [Abstract]
Schedule of Stock-based Compensation Expense	Stock-based compensation expense included in the condensed consolidated statements of operations was as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2024 2023 2024 2023 Infrastructure and trust & safety $ 29,078 $ 24,483 $ 84,326 $ 65,710 Research and development 189,064 155,651 542,867 432,676 General and administrative 36,345 32,200 102,786 97,673 Sales and marketing 10,678 7,688 27,579 21,229 Total stock-based compensation expense $ 265,165 $ 220,022 $ 757,558 $ 617,288
Schedule of Stock Option Activity	The following table summarizes the Company’s stock option activity (in thousands, except per option data and remaining contractual term): Options Outstanding Number of Weighted-Average Weighted-Average Remaining Aggregate Balances as of December 31, 2023 40,159 $ 2.98 5.16 $ 1,716,171 Granted — — Cancelled, forfeited, and expired (184) $ 4.79 Exercised (7,815) $ 2.72 Balances as of September 30, 2024 32,160 $ 3.04 4.48 $ 1,325,679 Exercisable as of September 30, 2024 31,825 $ 3.02 4.46 $ 1,312,577 Vested and expected to vest at September 30, 2024 32,160 $ 3.04 4.48 $ 1,325,679
Schedule of Restricted Stock Units and Restricted Stock Awards Activity	The following table summarizes the Company’s RSU and RSA activity (in thousands, except per share data): RSUs RSAs Number of Weighted-Average Number of Weighted-Average Unvested as of December 31, 2023 39,846 $ 42.25 149 $ 46.00 Granted 16,867 $ 38.95 — — Vested and released (15,566) $ 42.93 (74) $ 46.00 Cancelled (4,680) $ 41.16 (25) $ 46.00 Unvested as of September 30, 2024 36,467 $ 40.57 50 $ 46.00

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income/(Loss) (Tables)	9 Months Ended
Accumulated Other Comprehensive Income/(Loss) (Tables)	Sep. 30, 2024
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income/(Loss)	The following table shows a summary of changes in accumulated other comprehensive income/(loss) by component for the nine months ended September 30, 2024 (in thousands): Foreign Currency Translation Unrealized Gains/ (Losses) on Available-For-Sale Debt Securities Total Balance as of December 31, 2023 $ 1,442 $ 94 $ 1,536 Other comprehensive income/(loss), net of tax, before reclassifications 714 12,677 13,391 Amounts reclassified from accumulated other comprehensive income/(loss), net of tax — 1,489 1,489 Change in accumulated other comprehensive income/(loss), net of tax 714 14,166 14,880 Balance as of September 30, 2024 $ 2,156 $ 14,260 $ 16,416

Basic and Diluted Net Loss Pe_2

Basic and Diluted Net Loss Per Common Share (Tables)	9 Months Ended
Basic and Diluted Net Loss Per Common Share (Tables)	Sep. 30, 2024
Earnings Per Share [Abstract]
Schedule of Calculation of Basic and Diluted Net Loss Per Share	The following table presents the calculation of basic and diluted net loss per share (in thousands, except per share data): Three Months Ended Nine Months Ended September 30, September 30, 2024 2023 2024 2023 Basic and diluted net loss per share Numerator Consolidated net loss $ (240,447) $ (278,808) $ (719,562) $ (833,597) Less: net loss attributable to noncontrolling interest (1,123) (1,650) (3,751) (5,349) Net loss attributable to common stockholders $ (239,324) $ (277,158) $ (715,811) $ (828,248) Denominator Weighted-average common shares used in computing net loss per share attributable to common stockholders, based and diluted 650,961 619,350 642,977 612,938 Net loss per share attributable to common stockholders, basic and diluted $ (0.37) $ (0.45) $ (1.11) $ (1.35)
Schedule of Antidilutive Securities	The potential shares of common stock that were excluded from the computation of diluted net loss per share because including them would have been anti-dilutive are as follows (in thousands): As of September 30, 2024 2023 Stock options outstanding 32,160 43,306 RSUs outstanding 36,467 36,880 2020 ESPP 1,665 3,406 2023 PSUs Awards based on performance target achievement at period-end (1) 43 — Stock warrants outstanding 264 264 RSAs outstanding 50 276 Total 70,649 84,132 (1) Represents the hypothetical number of shares that would have been earned under the Company’s 2023 PSU Awards had the performance period ended on the balance sheet date.

Basis of Presentation and Sum_3

Basis of Presentation and Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended		12 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2024
Disaggregation of Revenue [Line Items]
Estimated average life time of a paying user		27 months	28 months	28 months		28 months
Increase in revenue	$ 26.4				$ 85.3
Increase in cost of revenue	$ 5.4				$ 17.8
Forecast
Disaggregation of Revenue [Line Items]
Increase in revenue							$ 98
Increase in cost of revenue							$ 20.4

Revenue from Contracts with C_3

Revenue from Contracts with Customers - Schedule of Revenue Disaggregated By Geography (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Revenue	$ 918,953	$ 713,225	$ 2,613,796	$ 2,049,335
Revenue Benchmark \| Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Revenue	$ 918,953	$ 713,225	$ 2,613,796	$ 2,049,335
Percentage of Revenue	100%	100%	100%	100%
United States and Canada \| Revenue Benchmark \| Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Revenue	$ 583,011	$ 458,563	$ 1,658,442	$ 1,323,849
Percentage of Revenue	64%	65%	63%	65%
U.S \| Revenue Benchmark \| Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of Revenue	60%	60%	59%	60%
Europe \| Revenue Benchmark \| Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Revenue	$ 167,758	$ 128,412	$ 476,729	$ 370,474
Percentage of Revenue	18%	18%	18%	18%
Asia-Pacific, including Australia and New Zealand \| Revenue Benchmark \| Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Revenue	$ 95,507	$ 73,772	$ 275,836	$ 208,002
Percentage of Revenue	10%	10%	11%	10%
Rest of world \| Revenue Benchmark \| Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Revenue	$ 72,677	$ 52,478	$ 202,789	$ 147,010
Percentage of Revenue	8%	7%	8%	7%

Revenue from Contracts with C_4

Revenue from Contracts with Customers - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Deferred revenue, revenue recognized			$ 1,983.4
Durable Virtual Items \| Revenue Benchmark \| Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue	92%	92%	92%	91%
Consumable Virtual Items \| Revenue Benchmark \| Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue	8%	8%	8%	9%

Leases (Details)

Leases (Details) $ in Millions	1 Months Ended	3 Months Ended
Leases (Details) $ in Millions	Sep. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Feb. 07, 2024 USD ($) ft²
Data Center Agreements
Lessee, Lease, Description [Line Items]
Operating lease, payments		$ 95.4
Lessee term of contract		7 years
Write-off of right-of-use assets	$ 70.3
Write-off of lease liabilities	$ 70.3
Sub-Lessee Agreement
Lessee, Lease, Description [Line Items]
Lessee term of contract			4 years
Area of real estate property \| ft²			133,137
Lessee, operating lease payments			$ 38.9
Sub Lessor Agreement
Lessee, Lease, Description [Line Items]
Area of real estate property \| ft²			61,773
Lessor term of contract			3 years
Operating lease, payments to be received			$ 13

Cash Equivalents and Investme_3

Cash Equivalents and Investments - Schedule of Cash Equivalents and Short and Long-Term Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Equity Securities
Amortized Cost	$ 3,807,443	$ 3,187,097
Gross Unrealized Gains	14,474	4,100
Gross Unrealized Losses	(214)	(4,006)
Fair Value	3,823,610	3,187,922
Cash Equivalents	544,441	629,715
Short-Term Investments	1,720,323	1,514,808
Long-Term Investments	1,558,846	1,043,399
Debt Securities
Debt Securities
Amortized Cost	3,807,443	3,187,097
Gross Unrealized Gains	14,474	4,100
Gross Unrealized Losses	(214)	(4,006)
Fair Value	3,821,703	3,187,191
Equity Securities
Cash Equivalents	544,441	629,715
Short-Term Investments	1,718,416	1,514,077
Long-Term Investments	1,558,846	1,043,399
Debt Securities \| Level 1
Debt Securities
Amortized Cost	2,663,693	2,307,588
Gross Unrealized Gains	7,485	2,007
Gross Unrealized Losses	(127)	(2,547)
Fair Value	2,671,051	2,307,048
Equity Securities
Cash Equivalents	544,441	614,888
Short-Term Investments	1,382,112	1,155,218
Long-Term Investments	744,498	536,942
Debt Securities \| Level 1 \| Money market funds
Debt Securities
Amortized Cost	513,512	614,888
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	513,512	614,888
Equity Securities
Cash Equivalents	513,512	614,888
Short-Term Investments	0	0
Long-Term Investments	0	0
Debt Securities \| Level 1 \| U.S. Treasury securities
Debt Securities
Amortized Cost	2,150,181	1,692,700
Gross Unrealized Gains	7,485	2,007
Gross Unrealized Losses	(127)	(2,547)
Fair Value	2,157,539	1,692,160
Equity Securities
Cash Equivalents	30,929	0
Short-Term Investments	1,382,112	1,155,218
Long-Term Investments	744,498	536,942
Debt Securities \| Level 2
Debt Securities
Amortized Cost	1,143,750	879,509
Gross Unrealized Gains	6,989	2,093
Gross Unrealized Losses	(87)	(1,459)
Fair Value	1,150,652	880,143
Equity Securities
Cash Equivalents	0	14,827
Short-Term Investments	336,304	358,859
Long-Term Investments	814,348	506,457
Debt Securities \| Level 2 \| U.S. agency securities
Debt Securities
Amortized Cost	269,994	286,007
Gross Unrealized Gains	172	27
Gross Unrealized Losses	(65)	(197)
Fair Value	270,101	285,837
Equity Securities
Cash Equivalents	0	0
Short-Term Investments	22,505	137,151
Long-Term Investments	247,596	148,686
Debt Securities \| Level 2 \| Commercial paper
Debt Securities
Amortized Cost	285,884	184,465
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(2)	0
Fair Value	285,882	184,465
Equity Securities
Cash Equivalents	0	14,827
Short-Term Investments	285,882	169,638
Long-Term Investments	0	0
Debt Securities \| Level 2 \| Corporate debt securities
Debt Securities
Amortized Cost	587,872	409,037
Gross Unrealized Gains	6,817	2,066
Gross Unrealized Losses	(20)	(1,262)
Fair Value	594,669	409,841
Equity Securities
Cash Equivalents	0	0
Short-Term Investments	27,917	52,070
Long-Term Investments	566,752	357,771
Equity Securities \| Level 1
Equity Securities
Amortized Cost
Gross Unrealized Gains
Gross Unrealized Losses
Fair Value	1,907	731
Cash Equivalents	0	0
Short-Term Investments	1,907	731
Long-Term Investments	0	0
Equity Securities \| Level 1 \| Mutual funds
Equity Securities
Amortized Cost
Gross Unrealized Gains
Gross Unrealized Losses
Fair Value	1,907	731
Cash Equivalents	0	0
Short-Term Investments	1,907	731
Long-Term Investments	$ 0	$ 0

Cash Equivalents and Investme_4

Cash Equivalents and Investments - Additional Information (Details)	9 Months Ended
	Sep. 30, 2024
Debt Securities, Available-for-Sale [Line Items]
Short-term debt investments contractual maturities period	1 year
Minimum
Debt Securities, Available-for-Sale [Line Items]
Long-term debt investments contractual maturities period	1 year
Maximum
Debt Securities, Available-for-Sale [Line Items]
Long-term debt investments contractual maturities period	5 years

Cash Equivalents and Investme_5

Cash Equivalents and Investments - Schedule of Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Less than 12 Months, Fair Value	$ 210,559	$ 917,186
Less than 12 Months, Unrealized Losses	(160)	(4,006)
12 Months or Greater, Fair Value	65,032	0
12 Months or Greater, Unrealized Losses	(54)	0
Total, Fair Value	275,591	917,186
Total, Unrealized Losses	(214)	(4,006)
U.S. Treasury securities
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Less than 12 Months, Fair Value	141,181	486,424
Less than 12 Months, Unrealized Losses	(82)	(2,547)
12 Months or Greater, Fair Value	62,000	0
12 Months or Greater, Unrealized Losses	(45)	0
Total, Fair Value	203,181	486,424
Total, Unrealized Losses	(127)	(2,547)
U.S. agency securities
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Less than 12 Months, Fair Value	47,443	182,475
Less than 12 Months, Unrealized Losses	(65)	(197)
12 Months or Greater, Fair Value	0	0
12 Months or Greater, Unrealized Losses	0	0
Total, Fair Value	47,443	182,475
Total, Unrealized Losses	(65)	(197)
Commercial paper
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Less than 12 Months, Fair Value	10,797
Less than 12 Months, Unrealized Losses	(2)
12 Months or Greater, Fair Value	0
12 Months or Greater, Unrealized Losses	0
Total, Fair Value	10,797
Total, Unrealized Losses	(2)
Corporate debt securities
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Less than 12 Months, Fair Value	11,138	248,287
Less than 12 Months, Unrealized Losses	(11)	(1,262)
12 Months or Greater, Fair Value	3,032	0
12 Months or Greater, Unrealized Losses	(9)	0
Total, Fair Value	14,170	248,287
Total, Unrealized Losses	$ (20)	$ (1,262)

Acquisitions - Additional Infor

Acquisitions - Additional Information (Details) - Speechly, Inc. $ in Millions	Sep. 18, 2023 USD ($)
Business Combination and Asset Acquisition [Line Items]
Purchase price	$ 10.1
Payment of cash to acquire business	4.8
Cash holdback	$ 5.3

Acquisitions - Schedule of Fair

Acquisitions - Schedule of Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023	Sep. 18, 2023
Business Acquisition [Line Items]
Goodwill	$ 142,236	$ 142,129
Speechly, Inc.
Business Acquisition [Line Items]
Cash and cash equivalents			$ 970
Other current assets acquired			111
Developed technology, useful life of five years			2,800
Goodwill			7,536
Other current liabilities assumed			(1,117)
Other long-term liabilities assumed			(182)
Total purchase price			$ 10,118
Estimated useful life			5 years

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Schedule of Goodwill (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2024 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 142,129
Foreign currency translation adjustments	107
Ending balance	$ 142,236

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Schedule of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Goodwill and Intangible Assets [Line Items]
Gross Carrying Amount	$ 100,195	$ 100,155
Accumulated Amortization Expense	(62,452)	(47,668)
Net Carrying Amount	37,743	52,487
Developed technology
Goodwill and Intangible Assets [Line Items]
Gross Carrying Amount	75,495	75,455
Accumulated Amortization Expense	(50,744)	(39,411)
Net Carrying Amount	24,751	36,044
Patents
Goodwill and Intangible Assets [Line Items]
Gross Carrying Amount	14,200	14,200
Accumulated Amortization Expense	(1,775)	(650)
Net Carrying Amount	12,425	13,550
Assembled workforce
Goodwill and Intangible Assets [Line Items]
Gross Carrying Amount	10,000	10,000
Accumulated Amortization Expense	(9,625)	(7,374)
Net Carrying Amount	375	2,626
Trade name
Goodwill and Intangible Assets [Line Items]
Gross Carrying Amount	500	500
Accumulated Amortization Expense	(308)	(233)
Net Carrying Amount	$ 192	$ 267

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Indefinite-lived intangible assets	$ 0.7		$ 0.7		$ 0.6
Amortization expense	$ 4.7	$ 5.2	$ 14.8	$ 14.2

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets - Schedule of Expected Future Amortization Expenses Related to the Finite-lived Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Remainder of 2024	$ 4,180
2025	15,735
2026	6,700
2027	3,137
2028	1,940
Thereafter	6,051
Net Carrying Amount	$ 37,743	$ 52,487

Other Balance Sheet Component_2

Other Balance Sheet Components - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Other Balance Sheet Components [Abstract]
Prepaid expenses	$ 47,419	$ 48,555
Accrued interest receivable	16,265	14,697
Other current assets	7,018	11,297
Total prepaid expenses and other current assets	$ 70,702	$ 74,549

Other Balance Sheet Component_3

Other Balance Sheet Components - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 1,229,560	$ 1,138,069
Less accumulated depreciation and amortization expense	(586,923)	(442,709)
Property and equipment—net	642,637	695,360
Servers and related equipment and software
Property, Plant and Equipment [Line Items]
Total property and equipment	919,932	914,989
Computer hardware and software licenses
Property, Plant and Equipment [Line Items]
Total property and equipment	50,980	43,732
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment	2,084	520
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	102,551	101,785
Construction in progress
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 154,013	$ 77,043

Other Balance Sheet Component_4

Other Balance Sheet Components - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense of property and equipment	$ 63.9	$ 48.4	$ 160.4	$ 139.4
Computer hardware and software licenses \| Service Life
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense of property and equipment	$ 17.9

Other Balance Sheet Component_5

Other Balance Sheet Components - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Other Balance Sheet Components [Abstract]
Accrued operating expenses	$ 60,486	$ 51,921
Short term operating lease liabilities	132,977	111,293
Accrued interest on the 2030 Notes	16,146	6,458
Taxes payable	45,493	59,632
Accrued compensation and other employee related liabilities	13,174	32,125
Other current liabilities	5,418	9,692
Total accrued expenses and other current liabilities	$ 273,694	$ 271,121

Debt - Additional Information (

Debt - Additional Information (Details) - 2030 Notes - USD ($) $ in Millions	Oct. 29, 2021	Sep. 30, 2024	Dec. 31, 2023
Level 2
Short-term Debt [Line Items]
Debt instrument, fair value disclosure		$ 931.6	$ 891.8
Unsecured Debt
Short-term Debt [Line Items]
Debt instrument, aggregated principal amount	$ 1,000
Interest rate	3.875%
Proceeds from debt, net of issuance costs	$ 987.5
Unamortized issuance costs	$ 12.5
Effective interest rate		4.05%
Unsecured Debt \| Redemption Period, at Any Time Prior to November 1, 2024
Short-term Debt [Line Items]
Percentage of principal amount of debt redeemed (up to)	40%
Debt instrument, redemption price, percentage	103.875%
Debt instrument, redemption terms, threshold percentage of principal amount outstanding	50%
Debt instrument, redemption terms, period	180 days
Unsecured Debt \| Redemption Period, at Any Time Prior to November 1, 2024
Short-term Debt [Line Items]
Debt instrument, redemption price, percentage	100%
Unsecured Debt \| Redemption Period, in Connection with Tender Offer
Short-term Debt [Line Items]
Debt instrument, redemption terms, percentage of outstanding debt hold by lender (no less than)	90%
Debt Instrument, redemption terms, period following purchase date (not more than)	30 days
Unsecured Debt \| Redemption Period, in Connection with Tender Offer \| Minimum
Short-term Debt [Line Items]
Debt Instrument, redemption terms, prior notice period	10 days
Unsecured Debt \| Redemption Period, in Connection with Tender Offer \| Maximum
Short-term Debt [Line Items]
Debt Instrument, redemption terms, prior notice period	60 days
Unsecured Debt \| Redemption Period, Certain Circumstances Involving Change of Control Event
Short-term Debt [Line Items]
Debt instrument, redemption price, percentage	101%

Debt - Schedule of Debt Instrum

Debt - Schedule of Debt Instrument Redemption (Details) - 2030 Notes - Unsecured Debt	Oct. 29, 2021
2024
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage	101.938%
2025
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage	100.969%
2026 and thereafter
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage	100%

Debt - Schedule of Long-term De

Debt - Schedule of Long-term Debt (Details) - 2030 Notes - Unsecured Debt - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Principal	$ 1,000,000	$ 1,000,000
Unamortized issuance costs	(8,677)	(9,700)
Net carrying amount	$ 991,323	$ 990,300

Debt - Schedule of Interest Exp

Debt - Schedule of Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Debt Instrument [Line Items]
Total interest expense	$ 10,286	$ 10,268	$ 30,853	$ 30,409
2030 Notes \| Unsecured Debt
Debt Instrument [Line Items]
Contractual interest expense	9,688	9,688	29,064	29,063
Amortization of debt issuance costs	344	331	1,023	982
Total interest expense	$ 10,032	$ 10,019	$ 30,087	$ 30,045

Commitments and Contingencies (

Commitments and Contingencies (Details)	Sep. 30, 2024 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Letters of credit available, amount	$ 0

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Details) shares in Thousands	3 Months Ended
	Mar. 31, 2024 shares	Mar. 31, 2023 shares	Sep. 30, 2024 vote $ / shares shares	Dec. 31, 2023 $ / shares shares
Class of Stock [Line Items]
Common stock, authorized (in shares)			5,000,000	5,000,000
Common stock, par value (in dollars per share) \| $ / shares			$ 0.0001	$ 0.0001
Preferred stock, authorized (in shares)			100,000
Preferred stock, par value (in dollars per share) \| $ / shares			$ 0.0001
Common Class A
Class of Stock [Line Items]
Common stock, authorized (in shares)			4,935,000	4,935,000
Common stock, par value (in dollars per share) \| $ / shares			$ 0.0001
Common stock, number of votes per share \| vote			1
Common Class B
Class of Stock [Line Items]
Common stock, authorized (in shares)			65,000	65,000
Common stock, par value (in dollars per share) \| $ / shares			$ 0.0001
Common stock, number of votes per share \| vote			20
Common Class B \| David Baszucki Founder
Class of Stock [Line Items]
Number of Class B common stock converted into Class A common stock (in shares)	1,400	1,300

Stockholders' Equity - Schedule

Stockholders' Equity - Schedule of Common Stock for Future Issuance (Details) - shares shares in Thousands	Sep. 30, 2024	Dec. 31, 2023
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	187,873	175,012
Stock options outstanding
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	32,160	40,159
Restricted Stock Units (“RSUs”) outstanding
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	36,467	39,846
Performance Shares \| Performance Stock Units (“PSUs”)
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	2,304	905
Performance Shares \| CEO Long-Term Performance Award
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	0	11,500
2020 Equity Incentive Plan
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	95,773	66,114
2020 Employee Stock Purchase Plan
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	20,855	16,075
Stock warrants outstanding
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	264	264
Unregistered stock awards (“RSAs”) outstanding
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	50	149

Stock-based Compensation Expe_3

Stock-based Compensation Expense - Additional Information (Details) $ / shares in Units, $ in Thousands			1 Months Ended	3 Months Ended					9 Months Ended
	Aug. 01, 2024	Mar. 01, 2024 USD ($) measure installment shares	Feb. 28, 2021 shares	Sep. 30, 2024 USD ($) shares	Mar. 31, 2024 $ / shares shares	Sep. 30, 2023 USD ($)	Jun. 30, 2023 measure $ / shares	Jun. 30, 2022 USD ($) period $ / shares shares	Sep. 30, 2024 USD ($) plan $ / shares shares	Sep. 30, 2023 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of plans \| plan									3
Service period									3 months
Stock-based compensation expense (benefit)				$ 265,165		$ 220,022			$ 757,558	$ 617,288
Share-based compensation arrangement by share-based payment award, anniversary of termination period	1 month
2024 CEO PSUs and RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense (benefit)		$ 84,400		7,300					25,100
Share-based payment arrangement, nonvested award, cost not yet recognized, percentage		75%
2020 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense (benefit)				$ 3,200		8,700			$ 14,700	24,100
Stock options outstanding \| 2004 Incentive Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation by share based payment arrangement number of shares available for issuance (in shares) \| shares				0					0
RSUs outstanding
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) \| shares									16,867,000
Granted, weighted average grant date fair value (in dollars per share) \| $ / shares									$ 38.95
RSUs outstanding \| CEO Long Term Performance Award \| Founder CEO
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of RSUs eligible to vest (in shares) \| shares			11,500,000
RSUs outstanding \| CEO Long Term Performance Award \| Founder CEO \| Common Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period			5 years
RSUs outstanding \| 2024 CEO PSUs and RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Service period		3 years
Granted (in shares) \| shares		148,844
RSUs outstanding \| 2024 CEO PSUs and RSUs \| Founder CEO
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, nonvested award, cost not yet recognized, amount		$ 84,400
Stock-based compensation expense (benefit)						12,300				36,500
Performance-Based Restricted Stock Units (RSUs) \| 2024 CEO PSUs and RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, nonvested award, cost not yet recognized, percentage		25%
Performance period									2 years
Number of performance measures \| measure		2
PSU target number of shares (in shares) \| shares		446,534
Share-based compensation arrangement by share-based payment award, target number of shares, performance measures of cumulative, percentage		80%
Share-based compensation arrangement by share-based payment award, target number of shares, adjusted EBITDA, percentage		20%
Performance-Based Restricted Stock Units (RSUs) \| 2024 CEO PSUs and RSUs \| Share-Based Payment Arrangement, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage		67%
Number of installments \| installment		4
Performance-Based Restricted Stock Units (RSUs) \| 2024 Executive PSU Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense (benefit)				$ 5,200					$ 7,900
PSU target number of shares (in shares) \| shares					353,241
Share-based compensation arrangement by share-based payment award, target number of shares, performance measures of cumulative, percentage					80%
Share-based compensation arrangement by share-based payment award, target number of shares, adjusted EBITDA, percentage					20%
Granted, weighted average grant date fair value (in dollars per share) \| $ / shares					$ 41.32
Performance-Based Restricted Stock Units (RSUs) \| 2023 PSU Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense (benefit)				$ 3,200		1,400			$ 4,800	2,900
Performance period							2 years
Number of performance measures \| measure							2
PSU target number of shares (in shares) \| shares				213,502					213,502
Share-based compensation arrangement by share-based payment award, target number of shares, performance measures of cumulative, percentage									80%
Share-based compensation arrangement by share-based payment award, target number of shares, adjusted EBITDA, percentage									20%
Granted, weighted average grant date fair value (in dollars per share) \| $ / shares							$ 45.70
Performance-Based Restricted Stock Units (RSUs) \| 2023 PSU Awards \| Michael Guthrie
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage	50%
Performance-Based Restricted Stock Units (RSUs) \| 2023 PSU Awards \| Share-Based Payment Arrangement, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage							50%
Performance-Based Restricted Stock Units (RSUs) \| 2023 PSU Awards \| Share-Based Payment Arrangement, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage							50%
Performance-Based Restricted Stock Units (RSUs) \| 2022 PSU Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense (benefit)				$ 100		$ 200			$ (400)	$ 2,200
Performance period								3 years
PSU target number of shares (in shares) \| shares								207,284
Granted, weighted average grant date fair value (in dollars per share) \| $ / shares								$ 43.13
Estimated total share-based payment expense								$ 6,000
Share-based payment award, number of measurement periods \| period								5
Performance-Based Restricted Stock Units (RSUs) \| Minimum \| 2024 CEO PSUs and RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares earned of the target number of shares		0%
Performance-Based Restricted Stock Units (RSUs) \| Minimum \| 2023 PSU Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares earned of the target number of shares							0%
Performance-Based Restricted Stock Units (RSUs) \| Minimum \| 2022 PSU Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares earned of the target number of shares								0%
Performance-Based Restricted Stock Units (RSUs) \| Maximum \| 2024 CEO PSUs and RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares earned of the target number of shares		200%
Performance-Based Restricted Stock Units (RSUs) \| Maximum \| 2023 PSU Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares earned of the target number of shares							200%
Performance-Based Restricted Stock Units (RSUs) \| Maximum \| 2022 PSU Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares earned of the target number of shares								200%

Stock-based Compensation Expe_4

Stock-based Compensation Expense - Schedule of Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	$ 265,165	$ 220,022	$ 757,558	$ 617,288
Infrastructure and trust & safety
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	29,078	24,483	84,326	65,710
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	189,064	155,651	542,867	432,676
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	36,345	32,200	102,786	97,673
Sales and marketing
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	$ 10,678	$ 7,688	$ 27,579	$ 21,229

Stock-based Compensation Expe_5

Stock-based Compensation Expense - Schedule of Stock Option Activity (Details) $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2024 USD ($) $ / shares shares	Dec. 31, 2023 USD ($) $ / shares shares
Number of Shares Subject to Options
Beginning balance (in shares) \| shares	40,159
Granted (in shares) \| shares	0
Cancelled, forfeited, and expired (in shares) \| shares	(184)
Exercised (in shares) \| shares	(7,815)
Ending balance (in shares) \| shares	32,160	40,159
Exercisable (in shares) \| shares	31,825
Vested and expected to vest (in shares) \| shares	32,160
Weighted-Average Exercise Price (per Option)
Beginning balance (in dollars per share) \| $ / shares	$ 2.98
Granted (in dollars per share) \| $ / shares	0
Cancelled (in dollars per share) \| $ / shares	4.79
Exercised (in dollars per share) \| $ / shares	2.72
Ending balance (in dollars per share) \| $ / shares	3.04	$ 2.98
Exercisable (in dollars per share) \| $ / shares	3.02
Vested and expected to vest (in dollars per share) \| $ / shares	$ 3.04
Weighted-Average Remaining Contractual Term (Years)	4 years 5 months 23 days	5 years 1 month 28 days
Exercisable, weighted-average remaining contractual term	4 years 5 months 15 days
Vested and expected to vest, weighted-average remaining contractual term	4 years 5 months 23 days
Aggregate Intrinsic Value \| $	$ 1,325,679	$ 1,716,171
Exercisable, aggregate intrinsic value \| $	1,312,577
Vested and expected to vest, aggregate intrinsic value \| $	$ 1,325,679

Stock-based Compensation Expe_6

Stock-based Compensation Expense - Schedule of Restricted Stock Units and Restricted Stock Awards Activity (Details) shares in Thousands	9 Months Ended
	Sep. 30, 2024 $ / shares shares
RSUs
Number of Shares
Beginning balance (in shares) \| shares	39,846
Granted (in shares) \| shares	16,867
Vested and released (in shares) \| shares	(15,566)
Cancelled (in shares) \| shares	(4,680)
Ending balance (in shares) \| shares	36,467
Weighted-Average Grant Date Fair Value (per Share)
Beginning balance (in dollars per share) \| $ / shares	$ 42.25
Granted (in dollars per share) \| $ / shares	38.95
Released (in dollars per share) \| $ / shares	42.93
Cancelled (in dollars per share) \| $ / shares	41.16
Ending balance (in dollars per share) \| $ / shares	$ 40.57
RSAs
Number of Shares
Beginning balance (in shares) \| shares	149
Granted (in shares) \| shares	0
Vested and released (in shares) \| shares	(74)
Cancelled (in shares) \| shares	(25)
Ending balance (in shares) \| shares	50
Weighted-Average Grant Date Fair Value (per Share)
Beginning balance (in dollars per share) \| $ / shares	$ 46
Granted (in dollars per share) \| $ / shares	0
Released (in dollars per share) \| $ / shares	46
Cancelled (in dollars per share) \| $ / shares	46
Ending balance (in dollars per share) \| $ / shares	$ 46

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income/(Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance beginning	$ 111,301	$ 164,200	$ 68,626	$ 305,035
Other comprehensive income/(loss), net of tax	22,526	(1,769)	14,848	(16,142)
Balance ending	178,458	119,854	178,458	119,854
Total
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance beginning	(6,229)	(14,095)	1,536	671
Other comprehensive income/(loss), net of tax, before reclassifications			13,391
Amounts reclassified from accumulated other comprehensive income/(loss), net of tax			1,489
Other comprehensive income/(loss), net of tax	22,645	(1,784)	14,880	(16,550)
Balance ending	16,416	$ (15,879)	16,416	$ (15,879)
Foreign Currency Translation
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance beginning			1,442
Other comprehensive income/(loss), net of tax, before reclassifications			714
Amounts reclassified from accumulated other comprehensive income/(loss), net of tax			0
Other comprehensive income/(loss), net of tax			714
Balance ending	2,156		2,156
Unrealized Gains/ (Losses) on Available-For-Sale Debt Securities
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance beginning			94
Other comprehensive income/(loss), net of tax, before reclassifications			12,677
Amounts reclassified from accumulated other comprehensive income/(loss), net of tax			1,489
Other comprehensive income/(loss), net of tax			14,166
Balance ending	$ 14,260		$ 14,260

Employee and Director Benefits

Employee and Director Benefits (Details) - NQDC Plan	9 Months Ended
Employee and Director Benefits (Details) - NQDC Plan	Sep. 30, 2024
Employee
Defined Benefit Plan Disclosure [Line Items]
Maximum percentage of salary	90%
Maximum percentage of cash bonus compensation	100%
Maximum granted, percentage	65%
Non Employee Director
Defined Benefit Plan Disclosure [Line Items]
Maximum percentage of salary	100%

Joint Venture (Details)

Joint Venture (Details) - USD ($)		1 Months Ended	3 Months Ended		9 Months Ended
Joint Venture (Details) - USD ($)	May 10, 2023	Feb. 28, 2019	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
6.0% Notes Due 2026
Schedule of Equity Method Investments [Line Items]
Interest expense			$ 200,000	$ 200,000	$ 700,000	$ 300,000
6.0% Notes Due 2026 \| Unsecured Debt
Schedule of Equity Method Investments [Line Items]
Interest rate	6%
Songhua River Investment Limited \| 6.0% Notes Due 2026
Schedule of Equity Method Investments [Line Items]
Proceeds from debt, net of issuance costs	$ 14,700,000
Roblox China Holding Corp
Schedule of Equity Method Investments [Line Items]
Equity method investment ownership percentage		51%
Roblox China Holding Corp \| 6.0% Notes Due 2026
Schedule of Equity Method Investments [Line Items]
Proceeds from debt, net of issuance costs	15,300,000
Roblox China Holding Corp \| 6.0% Notes Due 2026 \| Unsecured Debt
Schedule of Equity Method Investments [Line Items]
Debt instrument, aggregated principal amount	$ 30,000,000
Debt instrument, term of maturity date extension	2 years
Roblox China Holding Corp \| Songhua River Investment Limited
Schedule of Equity Method Investments [Line Items]
Minority interest percentage in joint venture		49%
Roblox China Holding Corp \| Songhua River Investment Limited
Schedule of Equity Method Investments [Line Items]
Contribution by non controlling interest to the joint venture		$ 50,000,000

Basic and Diluted Net Loss Pe_3

Basic and Diluted Net Loss Per Common Share - Schedule of Calculation of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Numerator
Consolidated net loss	$ (240,447)	$ (278,808)	$ (719,562)	$ (833,597)
Less: net loss attributable to noncontrolling interest	(1,123)	(1,650)	(3,751)	(5,349)
Net loss attributable to common stockholders	$ (239,324)	$ (277,158)	$ (715,811)	$ (828,248)
Denominator
Weighted-average common shares used in computing net loss per share attributable to common stockholders, basic (in shares)	650,961	619,350	642,977	612,938
Weighted-average common shares used in computing net loss per share attributable to common stockholders, diluted (in shares)	650,961	619,350	642,977	612,938
Net loss per share attributable to common stockholders, basic (in dollars per share)	$ (0.37)	$ (0.45)	$ (1.11)	$ (1.35)
Net loss per share attributable to common stockholders, diluted (in dollars per share)	$ (0.37)	$ (0.45)	$ (1.11)	$ (1.35)

Basic and Diluted Net Loss Pe_4

Basic and Diluted Net Loss Per Common Share - Schedule of Antidilutive Securities (Details) - shares shares in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in share)	70,649	84,132
Stock options outstanding
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in share)	32,160	43,306
RSUs outstanding
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in share)	36,467	36,880
2020 ESPP
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in share)	1,665	3,406
2023 PSUs Awards based on performance target achievement at period-end
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in share)	43	0
Stock warrants outstanding
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in share)	264	264
RSAs outstanding
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in share)	50	276

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ in Thousands	Oct. 31, 2024	Sep. 30, 2024	Dec. 31, 2023
Subsequent Event [Line Items]
Operating lease right-of-use assets		$ 626,486	$ 665,107
Subsequent Event
Subsequent Event [Line Items]
Operating lease right-of-use assets	$ 143,000
Operating lease	$ 126,000
Minimum \| Subsequent Event
Subsequent Event [Line Items]
Lessee, operating lease, remaining lease term	3 years
Maximum \| Subsequent Event
Subsequent Event [Line Items]
Lessee, operating lease, remaining lease term	7 years