Unity Software (U) 10-Q 12 May 21 2021 Q1 Quarterly report Financial data

Cover

Cover - shares	3 Months Ended
	Mar. 31, 2021	May 05, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2021
Document Transition Report	false
Entity File Number	001-39497
Entity Registrant Name	UNITY SOFTWARE INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	27-0334803
Entity Address, Address Line One	30 3rd Street
Entity Address, City or Town	San Francisco
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94103‑3104
City Area Code	415
Local Phone Number	539‑3162
Title of 12(b) Security	Common stock, $0.000005 par value
Trading Symbol	U
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		279,417,338
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Entity Central Index Key	0001810806
Current Fiscal Year End Date	--12-31

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 1,119,935	$ 1,272,578
Marketable securities	527,300	479,406
Accounts receivable, net of allowances of $4,579 and $2,714 as of March 31, 2021 and December 31, 2020, respectively	298,200	274,255
Prepaid expenses	41,913	32,025
Other current assets	22,839	22,396
Total current assets	2,010,187	2,080,660
Property and equipment, net	97,597	95,544
Operating lease right‑of‑use assets	116,409	103,609
Goodwill	306,160	286,251
Intangible assets, net	57,940	57,459
Restricted cash	18,137	21,369
Other assets	44,012	26,333
Total assets	2,650,442	2,671,225
Current liabilities:
Accounts payable	15,958	11,303
Accrued expenses and other current liabilities	91,932	106,306
Publisher payables	186,316	182,269
Income and other taxes payable	54,231	64,116
Deferred revenue	116,718	113,853
Operating lease liabilities	25,437	25,375
Total current liabilities	490,592	503,222
Long-term deferred revenue	22,256	20,523
Long-term operating lease liabilities	109,996	98,532
Other long-term liabilities	10,386	11,805
Total liabilities	633,230	634,082
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.000005 par value; 100,000 shares authorized, and no shares issued and outstanding as of March 31, 2021; 100,000 shares authorized, no shares issued and outstanding as of December 31, 2020	0	0
Common stock, $0.000005 par value; 1,000,000 and 1,000,000 shares authorized as of March 31, 2021 and December 31, 2020, respectively; 279,170 and 273,537 shares issued and outstanding as of March 31, 2021 and December 31, 2020, respectively	2	2
Additional paid-in capital	2,927,242	2,838,057
Accumulated other comprehensive loss	(3,552)	(3,418)
Accumulated deficit	(906,480)	(797,498)
Total stockholders’ equity	2,017,212	2,037,143
Total liabilities and stockholders’ equity	$ 2,650,442	$ 2,671,225

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ 4,579	$ 2,714
Preferred stock, par value (USD per share)	$ 0.000005	$ 0.000005
Preferred stock, authorized (in shares)	100,000,000	100,000,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (USD per share)	$ 0.000005	$ 0.000005
Common stock, authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, issued (in shares)	279,170,000	273,537,000
Common stock, outstanding (in shares)	279,170,000	273,537,000

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Revenue	$ 234,772	$ 166,994
Cost of revenue	58,734	31,868
Gross profit	176,038	135,126
Operating expenses
Research and development	154,015	81,751
Sales and marketing	69,793	43,259
General and administrative	63,132	37,553
Total operating expenses	286,940	162,563
Loss from operations	(110,902)	(27,437)
Interest expense	(115)	(132)
Interest income and other expense, net	1,565	1,856
Loss before provision for income taxes	(109,452)	(25,713)
Provision for (benefit from) income taxes	(1,992)	1,023
Net loss	$ (107,460)	$ (26,736)
Basic and diluted net loss per share:
Net loss per share attributable to our common stockholders, basic and diluted (USD per share)	$ (0.39)	$ (0.21)
Weighted-average shares used in per share calculation attributable to our common stockholders, basic and diluted (in shares)	276,068	127,783

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net loss	$ (107,460)	$ (26,736)
Other comprehensive loss, net of taxes:
Change in foreign currency translation adjustment	(31)	(95)
Change in unrealized losses on marketable securities	(103)	0
Other comprehensive loss	(134)	(95)
Comprehensive loss	$ (107,594)	$ (26,831)

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Adjustment	Convertible Series E Preferred Stock	Convertible Preferred Stock	Convertible Preferred StockConvertible Series E Preferred Stock	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit	Accumulated DeficitAdjustment
Beginning Balance (in shares) at Dec. 31, 2019				95,899,214		123,261,024
Beginning Balance at Dec. 31, 2019	$ 393,911			$ 686,559		$ 1	$ 226,173	$ (3,632)	$ (515,190)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock from exercise of stock options (in shares)						767,527
Issuance of common stock from exercise of stock options	2,429						2,429
Stock‑based compensation expense	9,691						9,691
Issuance of stock (in shares)					6,818,182	4,545,455
Issuance of stock	100,000		$ 149,970		$ 149,970		100,000
Purchase and retirement of stock (in shares)						(5,000)
Purchase and retirement of stock	(110)						(110)
Net loss	(26,736)								(26,736)
Foreign currency translation adjustment	(95)							(95)
Unrealized loss on investments	0
Ending Balance (in shares) at Mar. 31, 2020				102,717,396		128,569,006
Ending Balance at Mar. 31, 2020	629,060			$ 836,529		$ 1	338,183	(3,727)	(541,926)
Beginning Balance (in shares) at Dec. 31, 2020				0		273,537,218
Beginning Balance at Dec. 31, 2020	$ 2,037,143	$ (1,522)		$ 0		$ 2	2,838,057	(3,418)	(797,498)	$ (1,522)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock from exercise of stock options (in shares)	4,544,498					4,544,498
Issuance of common stock from exercise of stock options	$ 22,624						22,624
Issuance of common stock for settlement of RSUs (in shares)						1,088,445
Issuance of common stock for settlement of RSUs	0
Stock‑based compensation expense	64,424						64,424
Stock-based compensation expense in connection with modified awards for certain employees	2,137						2,137
Net loss	(107,460)								(107,460)
Foreign currency translation adjustment	(31)							(31)
Unrealized loss on investments	(103)							(103)
Ending Balance (in shares) at Mar. 31, 2021				0		279,170,161
Ending Balance at Mar. 31, 2021	$ 2,017,212			$ 0		$ 2	$ 2,927,242	$ (3,552)	$ (906,480)

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating activities
Net loss	$ (107,460)	$ (26,736)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	11,832	9,810
Stock-based compensation expense	64,424	9,691
Stock-based compensation expense in connection with modified awards for certain employees	2,137	0
Other	1,441	41
Changes in assets and liabilities, net of effects of acquisitions:
Accounts receivable, net	(25,061)	(13,470)
Prepaid expenses	(9,888)	(6,084)
Other current assets	(2,318)	(9,216)
Operating lease right-of-use ("ROU") assets	5,907	5,855
Deferred tax, net	(1,824)	280
Other assets	(11,569)	229
Accounts payable	6,303	(437)
Accrued expenses and other current liabilities	(13,767)	(3,174)
Publisher payables	4,047	10,154
Income and other taxes payable	(10,104)	(3,366)
Operating lease liabilities	(7,492)	(7,756)
Other long-term liabilities	309	1,255
Deferred revenue	4,201	923
Net cash used in operating activities	(88,882)	(32,001)
Investing activities
Purchase of marketable securities	(129,082)	0
Proceeds from principal repayments on marketable securities	2,017	0
Maturities of marketable securities	78,000	0
Purchase of non-marketable investments	(4,000)	0
Purchase of property and equipment	(11,744)	(7,566)
Acquisition of intangible assets	0	(325)
Business acquisitions, net of cash acquired	(24,817)	0
Net cash used in investing activities	(89,626)	(7,891)
Financing activities
Proceeds from revolving loan facility	0	125,000
Payment of debt issuance costs	0	(247)
Proceeds from issuance of convertible preferred stock, net of issuance costs	0	149,970
Proceeds from issuance of common stock	0	100,000
Purchase and retirement of treasury stock	0	(110)
Proceeds from exercise of stock options	22,624	2,429
Net cash provided by financing activities	22,624	377,042
Effect of foreign exchange rate changes on cash, cash equivalents, and restricted cash	9	(72)
Increase (decrease) in cash, cash equivalents, and restricted cash	(155,875)	337,078
Cash and restricted cash, beginning of period	1,293,947	147,096
Cash, cash equivalents, and restricted cash, end of period	1,138,072	484,174
Supplemental disclosure of cash flow information:
Cash paid for interest	84	0
Cash paid for income taxes, net of refunds	(1,197)	7,648
Supplemental disclosures of non‑cash investing and financing activities:
Accrued property and equipment	2,358	3,874
Accrued intangible assets acquisition	$ 0	$ 325

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Statement of Cash Flows [Abstract]
Cash and cash equivalents	$ 1,119,935	$ 1,272,578	$ 466,989
Restricted cash	18,137	21,369	17,185
Total cash, cash equivalents, and restricted cash	$ 1,138,072	$ 1,293,947	$ 484,174	$ 147,096

Description of Business and Sum

Description of Business and Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
Description of Business and Summary of Significant Accounting Policies	Description of Business and Summary of Significant Accounting Policies Description of Business We were founded as Over the Edge Entertainment in Denmark in 2004. We reorganized as a Delaware corporation on May 28, 2009 as Unity Software Inc. (collectively referred to with its wholly owned subsidiaries as “we,” “our” or “us,”). We provide a comprehensive set of software solutions to create, run and monetize interactive, real-time 2D and 3D content for mobile phones, tablets, PCs, consoles, and augmented and virtual reality devices, among others. We are headquartered in San Francisco, California and have operations in the United States, Denmark, Belgium, Canada, China, Colombia, Finland, France, Germany, Ireland, Israel, Japan, Lithuania, Singapore, South Korea, Spain, Sweden, and the United Kingdom. We market our solutions directly through our online store and field sales operations in North America, Denmark, Finland, the United Kingdom, Germany, Japan, China, Singapore, and South Korea and indirectly through independent distributors and resellers worldwide. Basis of Presentation and Consolidation We prepared the accompanying unaudited condensed consolidated financial statements in accordance with generally accepted accounting principles in the United States (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (“SEC”) for interim financial reporting. The condensed consolidated financial statements include the accounts of Unity Software Inc. and its wholly owned subsidiaries. We have eliminated all intercompany balances and transactions. Certain information and footnote disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. In our opinion, the information contained herein reflects all adjustments necessary for a fair presentation of our 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 months ended March 31, 2021 shown in this report are not necessarily indicative of the results to be expected for the full year ending December 31, 2021 or any other period. The unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes included in our annual report on Form 10-K for the year ended December 31, 2020, filed with the SEC on March 5, 2020. There have been no material changes in our significant accounting policies as described in our consolidated financial statements for the year ended December 31, 2020, other than the adoption of accounting pronouncements as described below in Note 2, “Summary of Accounting Pronouncements,” of the Notes to Condensed Consolidated Financial Statements. Use of Estimates The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make certain estimates, judgments, and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, as well as the reported amounts of revenue and expenses during the reporting period. For us, these estimates include, but are not limited to, revenue recognition, allowances for doubtful accounts, fair values of financial instruments, useful lives of fixed assets, the incremental borrowing rate ("IBR") we use to determine our operating lease liabilities, income taxes, valuation of deferred tax assets and liabilities, valuation of intangible assets, useful lives of intangible assets, assets acquired and liabilities assumed through business combinations, fair value of our common stock prior to our IPO, valuation of stock-based compensation, capitalization of software costs and software implementation costs, customer life for capitalized commissions, and other contingencies, among others. Actual results could differ from those estimates, and such differences could be material to our financial position and results of operations.

Summary of Accounting Pronounce

Summary of Accounting Pronouncements	3 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
Summary of Accounting Pronouncements	Summary of Accounting Pronouncements Accounting Pronouncements Recently Adopted In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , and subsequent amendments, which requires the measurement and recognition of expected credit losses for financial assets held at amortized cost, including trade receivables. This update replaces the existing incurred loss impairment model with an expected loss methodology, which will result in more timely recognition of credit losses. The new impairment methodology eliminates the probable initial recognition threshold and, instead, estimates the expected credit losses in consideration of past events, current conditions and forecasted information. It also eliminates the concept of other-than-temporary impairment and requires credit losses related to available-for-sale debt securities to be recorded through an allowance for credit losses rather than as a reduction in the amortized cost basis of the securities. We adopted this new standard effective January 1, 2021, using the modified-retrospective approach, which resulted in a cumulative-effect adjustment of $1.5 million to accumulated deficit. We updated the following accounting policies as a result of the adoption of this guidance. Accounts Receivable We record accounts receivable at the original invoiced amount, net of allowances for credit losses for any potential uncollectible amounts. We make estimates of expected credit losses for the allowance for doubtful accounts based upon our assessment of various factors, including historical experience, the age of the accounts receivable balances, credit quality of our customers, current economic conditions, reasonable and supportable forecasts of future economic conditions, and other factors that may affect our ability to collect from customers. Accounts receivable deemed uncollectible are charged against the allowance for credit losses when identified. The estimated credit loss allowance is recorded as a general and administrative expense on our condensed consolidated statement of operations. As of March 31, 2021, the allowance for credit losses was $4.6 million. Marketable Securities Our marketable securities consist of investments in U.S. treasury securities, asset-backed securities, corporate bonds, commercial paper, and supranational bonds. We classify our investments in debt securities as available-for-sale at the time of purchase. We consider all debt securities as available for use in current operations, including those with maturity dates beyond one year, and therefore classify these securities as current assets in the consolidated balance sheets. When the fair value of a security is below its amortized cost, the amortized cost will be reduced to its fair value if it is more likely than not that we are required to sell the impaired security before recovery of its amortized cost basis, or we have the intention to sell the security. If neither of these conditions is met, we determine whether the impairment is due to credit losses by comparing the present value of the expected cash flows of the security with its amortized cost basis. The amount of impairment recognized is limited to the excess of the amortized cost over the fair value of the security. An allowance for credit losses for the excess of amortized cost over the expected cash flows is recorded in interest income and other expense, net in our condensed consolidated statements of operations. Impairment losses that are not credit-related are included in accumulated other comprehensive loss in stockholders’ equity.

Revenue

Revenue	3 Months Ended
	Mar. 31, 2021
Revenue from Contract with Customer [Abstract]
Revenue	Revenue Disaggregation of Revenue Revenue by Source The following table presents our revenue disaggregated by source (in thousands): Three Months Ended March 31, 2021 2020 Create Solutions $ 70,387 $ 46,696 Operate Solutions 146,578 104,368 Strategic Partnerships and Other 17,807 15,930 Total revenue $ 234,772 $ 166,994 Additional information regarding our revenue by source is discussed under the heading “Revenue Recognition” in Note 1, “Description of Business and Summary of Significant Accounting Policies,” of the Notes to Condensed Consolidated Financial Statements. Revenue by Geographic Area The following table presents our revenue disaggregated by geography, based on the invoice address of our customers (in thousands): Three Months Ended March 31, 2021 2020 United States $ 57,006 $ 40,490 Greater China (1)(2) 36,549 23,756 EMEA (1)(3) 86,102 64,691 APAC (1)(4) 45,679 30,411 Other Americas (1)(5) 9,436 7,646 Total revenue $ 234,772 $ 166,994 (1) No individual country, other than those disclosed above, exceeded 10% of our total revenue for any period presented. (2) Greater China includes China, Hong Kong, and Taiwan. (3) Europe, the Middle East, and Africa (“EMEA”) (4) Asia- Pacific , excluding Greater China (“APAC”) (5) Canada and Latin America (“Other Americas”) Contract Balances Timing of revenue recognition may differ from the timing of invoicing to customers. Contract assets relate to performance completed in advance of scheduled billings. The primary changes in our contract assets and contract liabilities are due to our performance under the contracts and billings. Contract assets (unbilled receivables) included in accounts receivable are recorded when revenue is recognized in advance of customer invoicing. Unbilled receivables totaled $29.7 million and $26.3 million as of March 31, 2021 and December 31, 2020, respectively. Contract liabilities (deferred revenue) relate to payments received in advance of performance under the contract. Revenue recognized during the three months ended March 31, 2021 that was included in the deferred revenue balances at December 31, 2020 was $43.8 million. The satisfaction of performance obligations typically lags behind payments received under contract from customers, which may lead to an increase in our deferred revenue balance over time. Remaining Performance Obligations As of March 31, 2021, we had total remaining performance obligations of $218.5 million, which represents the total contract transaction price allocated to undelivered performance obligations primarily for Create Solutions subscriptions, Enterprise Support, and Strategic Partnership contracts, which are generally recognized over the next three years. Transaction price allocated to the remaining performance obligations represents contracted revenue that has not yet been recognized, which includes deferred revenue and unbilled amounts that will be recognized as revenue in future periods. This amount excludes contracts with an original expected term of one year or less and contracts for which we recognize revenue in the amount and in the same period in which we invoice for services performed. We expect to recognize $98.2 million or 45% of this revenue during the next 12 months. We expect to recognize the remaining $120.3 million or 55% of this revenue thereafter.

Cash Equivalents and Marketable

Cash Equivalents and Marketable Securities	3 Months Ended
	Mar. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Cash Equivalents and Marketable Securities	Cash Equivalents and Marketable Securities Cash equivalents and marketable securities consisted of the following as of March 31, 2021 (in thousands) : Amortized Cost Unrealized Gains Unrealized Losses Fair Value Cash equivalents: Money market funds $ 284,042 $ — $ — $ 284,042 Commercial paper 33,992 — — 33,992 Total cash equivalents $ 318,034 $ — $ — $ 318,034 Marketable securities: Asset-backed securities $ 58,383 $ 9 $ (26) $ 58,366 Corporate bonds 93,036 3 (82) 92,957 U.S. treasury securities 328,239 74 (7) 328,306 Supranational bonds 47,692 5 (26) 47,671 Total marketable securities $ 527,350 $ 91 $ (141) $ 527,300 Cash equivalents and marketable securities consisted of the following as of December 31, 2020 (in thousands) : Amortized Cost Unrealized Gains Unrealized Losses Fair Value Cash equivalents: Money market funds $ 660,086 $ — $ — $ 660,086 Commercial paper 75,726 — — 75,726 Total cash equivalents $ 735,812 $ — $ — $ 735,812 Marketable securities: Asset-backed securities $ 49,950 $ 54 $ (39) $ 49,965 Corporate bonds 92,312 31 (21) 92,322 U.S. treasury securities 327,025 81 (56) 327,050 Supranational bonds 10,066 4 (1) 10,069 Total marketable securities $ 479,353 $ 170 $ (117) $ 479,406 We did not recognize any credit losses related to our available-for-sale debt securities during the three months ended March 31, 2021. The following table summarizes the amortized cost and fair value of our marketable securities as of March 31, 2021, by contractual years to maturity (in thousands): Amortized Cost Fair Value Due within one year $ 325,424 $ 325,446 Due between one and two years 201,926 201,854 Total $ 527,350 $ 527,300

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements We categorize assets and liabilities recorded or disclosed at fair value on our consolidated balance sheets based upon the level of judgment associated with inputs used to measure their fair value. The categories are as follows: • Level 1—Inputs are unadjusted quoted prices in active markets for identical assets or liabilities. • Level 2—Inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the assets or liabilities, either directly or indirectly through market corroboration, for substantially the full term of the financial instruments. • Level 3—Inputs are unobservable inputs based on our own assumptions used to measure assets and liabilities at fair value. The inputs require significant management judgment or estimation. The following table presents the fair value of our financial assets and liabilities measured at fair value on a recurring basis using the above input categories as of March 31, 2021 (in thousands): Level 1 Level 2 Level 3 Total Cash equivalents: Money market funds $ 284,042 $ — $ — $ 284,042 Commercial paper — 33,992 — 33,992 Total cash equivalents $ 284,042 $ 33,992 $ — $ 318,034 Marketable securities: Asset-backed securities $ — $ 58,366 $ — $ 58,366 Corporate bonds — 92,957 — 92,957 U.S. treasury securities — 328,306 — 328,306 Supranational bonds — 47,671 — 47,671 Total marketable securities $ — $ 527,300 $ — $ 527,300 The following table presents the fair value of our financial assets and liabilities measured at fair value on a recurring basis using the above input categories as of December 31, 2020 (in thousands): Level 1 Level 2 Level 3 Total Cash equivalents: Money market funds $ 660,086 $ — $ — $ 660,086 Commercial paper — 75,726 — 75,726 Total cash equivalents $ 660,086 $ 75,726 $ — $ 735,812 Marketable securities: Asset-backed securities $ — $ 49,965 $ — $ 49,965 Corporate bonds — 92,322 — 92,322 U.S. treasury securities — 327,050 — 327,050 Supranational bonds — 10,069 — 10,069 Total marketable securities $ — $ 479,406 $ — $ 479,406

Acquisitions

Acquisitions	3 Months Ended
	Mar. 31, 2021
Business Combinations [Abstract]
Acquisitions	Acquisitions Acquisitions are accounted for in accordance with FASB ASC Topic 805, Business Combinations , and the revenue and earnings of the acquired businesses have been included in our results from the respective dates of the acquisitions and were not material to our condensed consolidated financial statements. The total purchase price allocated to the net assets acquired is assigned based on the fair values as of the date of acquisition. The fair value assigned to identifiable intangible assets acquired was determined using the income approach and the cost approach. We believe that these identified intangible assets will have no residual value after their estimated economic useful lives. The identifiable intangible assets are subject to amortization on a straight-line basis, as this best approximates the benefit period related to these assets. The excess of the purchase price over the identified tangible and intangible assets, less liabilities assumed, is recorded as goodwill. Goodwill is not subject to amortization and it typically is not deductible for U.S. income tax purposes. For 2021 and certain 2020 acquisitions, the fair values of assets acquired and liabilities assumed, including current income taxes payable and deferred taxes, may change over the measurement period as additional information is received and certain tax returns are finalized. Accordingly, the provisional measurements of fair value of the current income taxes payable and deferred taxes are subject to change. We expect to finalize the valuation as soon as practicable, but not later than one year from the respective acquisition dates. 2021 Acquisitions During the three months ended March 31, 2021, we completed the acquisition of Visual Live 3D LLC for total consideration of approximately $24.8 million payable in cash. In aggregate, $4.9 million was attributed to intangible assets and represents acquired developed technology, customer relationships, and trademarks, $0.6 million was attributed to other assets, $19.9 million was attributed to goodwill and $0.6 million was attributed to other liabilities assumed. This acquisition was strategic in nature as it enhanced our product offerings. We recorded $0.6 million in transaction costs associated with this acquisition for the three months ended March 31, 2021. These costs were recorded within general and administrative expenses. Pro forma results of operations for this acquisition have not been presented because the acquisition is not material to the condensed consolidated statements of operations and comprehensive loss. In March 2021, we signed an agreement to purchase a company that designs and develops data transformation technology tools. The acquisition is expected to close in the second quarter of the year ending December 31, 2021 and will not be significant.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	3 Months Ended
	Mar. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill Goodwill represents the excess of purchase price and related costs over the value assigned to net tangible and identifiable intangible assets acquired in business combinations. The following table presents the changes in the carrying amount of goodwill for the three months ended March 31, 2021 (in thousands): Balance as of December 31, 2020 $ 286,251 Goodwill from acquisition 19,909 Balance as of March 31, 2021 $ 306,160 Intangible Assets, Net The following tables present details of our intangible assets, excluding goodwill (in thousands, except for weighted-average useful life): As of March 31, 2021 Weighted-Average (1) Gross Accumulated Net Developed technology 5.8 $ 86,374 $ (35,515) $ 50,859 Customer relationships 2.1 15,431 (9,765) 5,666 Trademark 3.3 3,657 (2,242) 1,415 Total intangible assets $ 105,462 $ (47,522) $ 57,940 As of December 31, 2020 Weighted‑Average (1) Gross Accumulated Net Developed technology 5.8 $ 83,688 $ (32,342) $ 51,346 Customer relationships 2.2 13,327 (8,682) 4,645 Trademark 3.3 3,507 (2,039) 1,468 Total intangible assets $ 100,522 $ (43,063) $ 57,459 (1) Based on weighted-average useful life established as of the acquisition date. The following table presents the amortization of finite-lived intangible assets included on our condensed consolidated statements of operations and comprehensive loss (in thousands): Three Months Ended March 31, 2021 2020 Amortization expense $ 4,459 $ 4,144 As of March 31, 2021, the estimated future amortization of finite-lived intangible assets for each of the next five years and thereafter was as follows (in thousands): Remainder of 2021 $ 13,412 2022 15,296 2023 11,922 2024 11,281 2025 5,507 Thereafter 522 Total $ 57,940

Balance Sheet Components

Balance Sheet Components	3 Months Ended
	Mar. 31, 2021
Property, Plant and Equipment [Abstract]
Balance Sheet Components	Balance Sheet Components The following tables provide details of selected balance sheet items (in thousands): As of March 31, December 31, Property and equipment, net: Gross property and equipment Leasehold improvements $ 69,064 $ 65,669 Computer and other hardware 62,710 58,568 Furniture 24,448 23,685 Internally developed software 2,043 3,301 Purchased software 1,443 1,436 Construction in progress 13,935 13,343 Total gross property and equipment 173,643 166,002 Accumulated depreciation and amortization (1) (76,046) (70,458) Property and equipment, net $ 97,597 $ 95,544 (1) The following table presents the depreciation and amortization of property and equipment included on our condensed consolidated statements of operations and comprehensive loss (in thousands): Three Months Ended March 31, 2021 2020 Depreciation and amortization expense $ 7,373 $ 5,666 Long-lived Assets, Net, by Geographic Area The following table presents our long-lived assets, net, disaggregated by geography, which consists of our property and equipment, net, but excludes internally developed software and purchased software (in thousands): As of March 31, December 31, United States $ 34,520 $ 35,494 Canada 24,202 20,063 United Kingdom 17,373 17,846 Greater China 5,214 5,653 EMEA, excluding United Kingdom (1) 11,112 11,181 APAC (1) 3,258 3,546 Other Americas, excluding Canada (1) 791 809 Total long-lived assets, net $ 96,470 $ 94,592 (1) No individual country, other than those disclosed above, exceeded 10% of our total long-lived assets, net, for any period presented. As of March 31, December 31, Accrued expenses and other current liabilities: Accrued expenses $ 47,821 $ 53,535 Accrued compensation 44,111 52,771 Accrued expenses and other current liabilities $ 91,932 $ 106,306 Sales Commissions We consider internal sales commissions as potential incremental costs of obtaining the contract with a customer. We apply a practical expedient to expense incremental costs incurred if the period of the benefit is one year or less. Incremental costs that have a period of benefit greater than one year are capitalized and amortized over the estimated period of benefit. Capitalized commissions, net of amortization, are included in other current assets and other assets on our condensed consolidated balance sheets. We capitalized $2.6 million and $1.4 million of sales commissions for the three months ended March 31, 2021 and 2020, respectively. As of March 31, 2021, capitalized commissions, net of amortization, included in other current assets and other assets were $3.8 million and $5.1 million, respectively. Capitalized commissions, net of amortization, included in other current assets and other assets were $2.9 million and $4.4 million, respectively, as of December 31, 2020. Capitalized commissions are amortized over the expected period of benefit, which we have determined, based on analysis, to be three years. Amortization of capitalized commissions are included in sales and marketing expenses on our condensed consolidated statements of operations and comprehensive loss. For the three months ended March 31, 2021 and 2020, we amortized $1.0 million and $0.1 million of capitalized commissions, respectively. We did not incur any impairment losses for the three months ended March 31, 2021 and 2020.

Leases

Leases	3 Months Ended
	Mar. 31, 2021
Leases [Abstract]
Leases	Leases We have operating leases for offices and equipment, which have remaining lease terms of less than one year to 10.75 years, some of which include options to extend the lease with renewal terms from one Components of lease expense were as follows (in thousands): Three Months Ended March 31, 2021 2020 Operating lease expense, excluding ROU asset impairment $ 7,301 $ 7,113 Short-term lease expense 117 307 Variable lease expense 975 1,700 Sublease income (93) (18) Total lease expense $ 8,300 $ 9,102 Other information related to operating leases was as follows (in thousands): Three Months Ended March 31, 2021 2020 Cash paid for amounts included in the measurement of operating lease liabilities $ 7,840 $ 6,395 Operating lease ROU assets obtained in exchange for new operating lease liabilities $ 18,891 $ 14,229 As of March 31, 2021, our operating leases had a weighted-average remaining lease term of 6.39 years and a weighted-average discount rate of 4.3%. As of March 31, 2021, future minimum lease payments under our non-cancellable operating leases were as follows (in thousands): Operating Leases (1) Remainder of 2021 $ 22,941 2022 29,638 2023 24,194 2024 21,136 2025 16,180 Thereafter 41,550 Total future minimum lease payments 155,639 Less: imputed interest (20,205) Present value of lease liabilities $ 135,434 (1) Excludes future minimum payments for leases which have not yet commenced as of March 31, 2021. As of March 31, 2021, we have entered into a lease that has not yet commenced with future minimum lease payments of $136.8 million that are not yet reflected on our condensed consolidated balance sheets. We are also currently involved in a dispute with a San Francisco landlord relating to whether the premises conform to the requirements of the lease

Borrowings

Borrowings	3 Months Ended
	Mar. 31, 2021
Debt Disclosure [Abstract]
Borrowings	Borrowings On December 20, 2019, we entered into a revolving credit agreement (the “ Credit Agreement”), which provides for a committed revolving loan facility of up to $125.0 million (the “Revolving Facility”) and includes a $20.0 million letter of credit subfacility (the “LC Capacity” and together with the Revolving Facility, the “Credit Facility”). Borrowings under the Credit Facility are available for working capital and general corporate purposes. The Credit Facility has a maturity date of December 20, 2024. At our option, we shall specify whether the loans made under the Revolving Facility is an Alternate Base Rate (“ABR”) borrowing or a Eurodollar borrowing, which then determines the annual interest rate. ABR borrowings bear interest at the ABR plus 0.50%. Eurodollar borrowings bear interest at the adjusted LIBO Rate plus 1.50%. The ABR equals the greatest of (i) the prime rate, (ii) the federal funds rate plus 0.50%, and (iii) the sum of the adjusted one-month LIBO Rate for a Eurodollar borrowing plus 1.00%. The ABR is subject to a floor of 1.00%. For ABR borrowings, interest is payable on the last day of March, June, September, and December of each year. For Eurodollar borrowings, interest is payable on the last day of each interest period for the applicable borrowing, and if such interest period extends over three months, each day prior to the last day of each three-month interval during such interest period. Commitments under the Revolving Facility are subject to a commitment fee of 0.25% on the difference between the total committed amount of the Revolving Facility on the one hand, and the amount drawn thereunder plus the aggregate amount of LC Capacity used on the other. An annual letter of credit fee of 1.50% of the average daily undrawn amount of the letters of credit issued thereunder is also payable quarterly. Letters of credit issued under the letter of credit subfacility are subject to a fronting fee of 0.125% on the average daily undrawn amount on such letters of credit. There was no principal amount outstanding under the Credit Facility, and the full $125.0 million was available for future borrowing under the Revolving Facility as of March 31, 2021. In March 2020, we borrowed the full $125.0 million amount as a Eurodollar borrowing under the Revolving Facility. In September 2020, we repaid the $125.0 million of indebtedness under the Credit Facility using a portion of the net proceeds we received from our initial public offering ("IPO"). In connection with this borrowing, we recognized $0.1 million and $0.1 million in expense primarily related to the interest cost associated with this borrowing, commitment fees on the undrawn portion and amortization of debt issuance costs during the three months ended March 31, 2021 and 2020, respectively. This amount is reported within “Interest expense” on our condensed consolidated statements of operations and comprehensive loss. Under the Credit Agreement, we must maintain a minimum liquidity balance of $75.0 million as of the last day of the most recently completed four consecutive fiscal quarters, which commenced on June 30, 2020. The Credit Agreement contains customary conditions to borrowing, representations and warranties, events of default and covenants, including covenants that restrict our ability to incur indebtedness, grant liens, make investments, undergo corporate changes, make dispositions, prepay other indebtedness, pay dividends or other distributions and engage in transactions with our affiliates. We were in compliance in all material respects with the covenants in the Credit Agreement as of March 31, 2021. The obligations under the Credit Agreement are secured by a perfected security interest in (i) all of our tangible and intangible assets, except for certain customary excluded assets, and (ii) all of our ownership in capital stock of restricted subsidiaries (limited, in the case of the stock of non-U.S. subsidiaries and U.S. subsidiaries that have no material assets other than equity interests and/or indebtedness in foreign subsidiaries that are controlled foreign corporations, to 65% of the capital stock of such subsidiaries). The obligations under the Credit Agreement are also guaranteed by our existing and subsequently acquired or formed material domestic subsidiaries.

Commitment and Contingencies

Commitment and Contingencies	3 Months Ended
	Mar. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies The following table summarizes our non‑cancellable contractual commitments as of March 31, 2021 (in thousands): Total Remainder of 2021 2022‑2023 2024‑2025 Purchase commitments (1) $ 128,980 $ 22,925 $ 90,430 $ 15,625 (1) The substantial majority of our purchase commitments are related to agreements with our data center hosting providers. Data Center Hosting Commitments In March 2018, we entered into a cloud service agreement with a total term of six years. Under the agreement, we were granted access to use certain cloud services. Minimum annual commitments increase annually over the term of the agreement. The aggregate value of all annual minimum commitments over the contract term is $210.5 million. Total spend under the agreement for the three months ended March 31, 2021 and 2020 was approximately $25.1 million and $11.8 million, respectively. We expect to meet our remaining commitment. Legal Matters In the normal course of business, we are subject to various legal matters. We accrue a liability when management believes that it is both probable that a liability has been incurred and the amount of loss can be reasonably estimated. We also disclose material contingencies when we believe a loss is not probable but reasonably possible. Legal costs related to such potential losses are expensed as incurred. In addition, recoveries are shown as a reduction in legal costs in the period in which they are realized. With respect to our outstanding matters, based on our current knowledge, we believe that the resolution of such matters will not, either individually or in aggregate, have a material adverse effect on our business or our consolidated financial statements. However, litigation is inherently uncertain, and the outcome of these matters cannot be predicted with certainty. Accordingly, cash flows or results of operations could be materially affected in any particular period by the resolution of one or more of these matters. Indemnifications In the ordinary course of business, we may provide indemnifications of varying scope and terms to customers, vendors, lessors, investors, directors, officers, employees and other parties with respect to certain matters. Indemnification may include losses from our breach of such agreements, services we provide, or third-party intellectual property infringement claims. These indemnifications may survive termination of the underlying agreement and the maximum potential amount of future indemnification payments may not be subject to a cap. As of March 31, 2021, there were no known events or circumstances that have resulted in a material indemnification liability to us and we did not incur material costs to defend lawsuits or settle claims related to these indemnifications. Letters of Credit We had $18.1 million and $21.4 million of secured letters of credit outstanding as of March 31, 2021 and December 31, 2020, respectively. These primarily relate to our office space leases and are fully collateralized by certificates of deposit which we record in restricted cash on our condensed consolidated balance sheets based on the term of the remaining restriction.

Stockholders' Equity and Employ

Stockholders' Equity and Employee Compensation Plans	3 Months Ended
	Mar. 31, 2021
Equity [Abstract]
Stockholders' Equity and Employee Compensation Plans	Stockholders’ Equity and Employee Compensation Plans Common Stock In January 2020, we sold 4.5 million shares of our common stock. The total transaction price of the common stock issued was $100.0 million. 2020 Equity Incentive Plan In succession to and continuation of our 2019 Stock Plan, our board of directors approved our 2020 Equity Incentive Plan (“2020 Plan”) in August 2020, and our stockholders approved in September 2020. No grants were made under our 2020 Plan prior to its effectiveness on September 17, 2020. As our 2020 Plan has become effective, no further grants will be made under our 2019 Stock Plan. In addition, shares subject to outstanding stock awards granted under our 2009 Stock Plan and 2019 Stock Plan that expire, or are forfeited, cancelled, withheld, or reacquired become available for grant pursuant to the 2020 Plan. The 2020 Plan provides for the grant of stock options, stock appreciation rights, restricted stock, restricted stock units, performance awards, and other forms of awards to employees, directors, and consultants, including employees and consultants of our affiliates. The exercise price of stock options granted under the 2020 Plan must be at least equal to the fair market value of a share of our common stock on grant date and the exercise price of incentive stock options granted to any participant, who owns more than 10% of the total voting power of all classes of our outstanding stock, must be at least 110% of the fair market value on the grant date. The term of a stock option and stock appreciation right may not exceed 10 years, except with respect to any participant who owns 10% of the voting power of all classes of our outstanding stock, the term of an incentive stock option may not exceed five years. As of March 31, 2021, we have reserved a total of 87.0 million shares of common stock under the 2020 Plan, of which 38.9 million were available for grant. 2020 Employee Stock Purchase Plan Our board of directors also adopted our 2020 Employee Stock Purchase Plan "(2020 ESPP") in August 2020, and our stockholders approved our 2020 ESPP in September 2020. The maximum number of shares of our common stock that may be issued under our 2020 ESPP is 8,023,463 shares, all of which were available for issuance as of March 31, 2021. Our 2020 ESPP permits participants to purchase shares of our common stock through payroll deductions of up to 15% of their earnings. Unless otherwise determined by the administrator, the purchase price of the shares will be 85% of the lower of the fair market value of our common stock on the first day of an offering or on the date of purchase. Participants may end their participation at any time during an offering and will be paid their accrued contributions that have not yet been used to purchase shares. Participation ends automatically upon termination of employment with us. As of March 31, 2021, we had not yet launched our 2020 ESPP and were under no obligation to do so.

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 31, 2021
Share-based Payment Arrangement [Abstract]
Stock-Based Compensation	Stock‑Based Compensation We recorded stock-based compensation expense related to grants to employees, including those in connection with modified awards, on our condensed consolidated statements of operations as follows (in thousands): Three Months Ended March 31, 2021 2020 Cost of revenue $ 5,117 $ 557 Research and development 31,650 4,789 Sales and marketing 12,037 1,847 General and administrative 17,757 2,498 Total stock-based compensation expense $ 66,561 $ 9,691 As of March 31, 2021, there was unrecognized compensation expense related to outstanding stock options of $139.4 million to be recognized over the weighted-average remaining vesting period of 2.28 years. As of March 31, 2021, there was unrecognized compensation expense related to unvested restricted stock units of $617.4 million to be recognized over the weighted-average remaining vesting period of 3.24 years. In future periods, stock-based compensation expense may increase as we issue additional equity-based awards to continue to attract and retain employees. In March 2021, we entered in to a separation agreement with our former Chief Financial Officer. The agreement provided for payment of a one-time lump-sum severance benefit of $0.3 million, payment for coverage under COBRA or applicable state law until November 30, 2021, a standard release of claims against us and a partial acceleration and extension of the exercise period of her outstanding equity awards. The stock-based compensation expense totaled $12.4 million in connection with the modified equity awards, of which $2.1 million, along with the one-time lump-sum severance benefit of $0.3 million, were recorded in general and administrative expense in the three months ended March 31, 2021 related to this agreement. The remaining $10.3 million of stock-based compensation expense will be recognized in the second quarter of the year ending December 31, 2021. Stock Options A summary of our stock option activity under the 2009 Stock Plan, 2019 Stock Plan, and 2020 Plan is as follows: Options Outstanding Stock Weighted-Average Weighted-Average Balance as of December 31, 2020 40,457,875 $ 8.03 6.87 Granted 1,003,064 $ 104.74 Exercised (4,544,498) $ 5.00 Forfeited, cancelled, or expired (78,076) $ 13.01 Balance as of March 31, 2021 36,838,365 $ 11.03 6.78 The aggregate pretax intrinsic value of stock options exercised during the three months ended March 31, 2021 and 2020 was $515.3 million and $10.4 million, respectively. The intrinsic value is the difference between the estimated fair value of our common stock on the date of exercise and the exercise price for in-the-money options. The weighted-average grant-date fair value of stock options granted during the three months ended March 31, 2021 was $38.40 per share. The fair value of stock options vested during the three months ended March 31, 2021 was $6.3 million. The calculated grant-date fair value of stock options granted was estimated using the Black-Scholes option-pricing model with the following assumptions: Three Months Ended March 31, 2021 Expected dividend yield — Risk-free interest rate 0.9% Expected volatility 36.0% Expected term (in years) 6.25 Fair value of underlying common stock $102.80 - $108.10 For stock options granted prior to our IPO, the expected term is based on the vesting terms, estimated exercise behavior, post-vesting cancellations and contractual terms of the awards. For stock options granted after our IPO, we estimate the expected term using the simplified method as specified under Staff Accounting Bulletin Topic 14, which utilizes the midpoint between the stock options' vesting date and the end of the contractual term. We do not plan to pay cash dividends in the foreseeable future; therefore, we used an expected dividend yield of zero. The risk-free interest rate is based on U.S. Treasury rates in effect at the time of grant with maturities equal to the grant’s expected term. The expected volatility is based on historical volatility of peer companies. The fair value of common stock is estimated based on observable transactions in the secondary market for stock options granted prior to our IPO and based on the grant-date closing price of our common stock for stock options granted after our IPO. Restricted Stock Units (“RSUs”) A summary of our RSU activity under the 2019 Stock Plan and 2020 Plan is as follows: Unvested Restricted Stock Units Number of Weighted-Average Unvested as of December 31, 2020 9,561,791 $ 53.79 Granted 2,044,015 $ 107.49 Vested (284,213) $ 40.63 Forfeited (58,473) $ 71.68 Unvested as of March 31, 2021 11,263,120 $ 63.77 The RSUs granted prior to our IPO are subject to both a service-based vesting condition, which is satisfied over two

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our tax provision for interim periods is determined using an estimated annual effective tax rate, adjusted for discrete items arising in that quarter. In each quarter, we update the estimated annual effective tax rate and make a year-to-date adjustment to the provision. The estimated annual effective tax rate is subject to volatility due to several factors, including variability in accurately predicting our pre-tax income or loss and the mix of jurisdictions to which they relate, intercompany transactions, changes in how we do business, and tax law developments. Our effective tax rate for the three months ended March 31, 2021 differs from the U.S. federal statutory tax rate of 21% primarily due to foreign earnings being taxed at different tax rates, credits and losses that cannot be benefited due to the valuation allowance on United States and Denmark entities, the tax benefit from stock-based compensation activities during the period, and the tax expense related to an intercompany transaction with our subsidiary in Israel. Our effective tax rate for the three months ended March 31, 2020 differs from the U.S. federal statutory tax rate of 21% primarily due to foreign earnings being taxed at different tax rates, credits and losses that cannot be benefited due to the valuation allowance on United States and Denmark entities, and reversal of unrecognized tax benefits due to statute of limitation expiration. The realization of deferred tax assets is dependent upon the generation of sufficient taxable income of the appropriate character in future periods. We regularly assess the ability to realize our deferred tax assets and establish a valuation allowance if it is more-likely-than-not that some portion of the deferred tax assets will not be realized. We weigh all available positive and negative evidence, including our earnings history and results of recent operations, scheduled reversals of deferred tax liabilities, projected future taxable income, and tax planning strategies. Due to the weight of objectively verifiable negative evidence, including our history of losses, we believe that it is more likely than not that our U.S. federal, certain state, Denmark, and certain non-U.S. jurisdictions deferred tax assets will not be realized as of March 31, 2021 and December 31, 2020, and as such, we have maintained a full valuation allowance against such deferred tax assets.

Net Loss per Share of Common St

Net Loss per Share of Common Stock	3 Months Ended
	Mar. 31, 2021
Earnings Per Share [Abstract]
Net Loss per Share of Common Stock	Net Loss per Share of Common Stock Basic net loss per share attributable to our common stockholders is computed using the weighted-average number of common shares outstanding during the period, less shares subject to repurchase. Diluted net loss per share is the same as basic net loss per share for all periods presented because the effects of potentially dilutive items were antidilutive given our net loss in each period presented. Potentially dilutive common shares result from the assumed exercise of outstanding stock options and assumed vesting of outstanding RSUs, both using the treasury stock method. The following table presents the calculation of basic and diluted net loss per share (in thousands, except per share data): Three Months Ended March 31, 2021 2020 Basic and diluted net loss per share Numerator: Net loss attributable to our common stockholders $ (107,460) $ (26,736) Denominator: Weighted-average common shares used in per share computation, basic and diluted 276,068 127,783 Net loss per share, basic and diluted $ (0.39) $ (0.21) The following table presents the forms of antidilutive potential common shares excluded from the computation of diluted net loss per share for the following periods (in thousands): Three Months Ended March 31, 2021 2020 Convertible preferred stock — 102,717 Stock options 36,838 44,157 RSUs 11,263 —

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2021
Subsequent Events [Abstract]
Subsequent Events	Subsequent EventsIn April 2020, we terminated without penalty our Credit Agreement. There was no outstanding indebtedness under the Credit Facility, and we determined that the Credit Facility was no longer necessary.

Description of Business and S_2

Description of Business and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation and ConsolidationWe prepared the accompanying unaudited condensed consolidated financial statements in accordance with generally accepted accounting principles in the United States (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (“SEC”) for interim financial reporting.
Consolidation	The condensed consolidated financial statements include the accounts of Unity Software Inc. and its wholly owned subsidiaries. We have eliminated all intercompany balances and transactions. Certain information and footnote disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. In our opinion, the information contained herein reflects all adjustments necessary for a fair presentation of our 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 months ended March 31, 2021 shown in this report are not necessarily indicative of the results to be expected for the full year ending December 31, 2021 or any other period. The unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes included in our annual report on Form 10-K for the year ended December 31, 2020, filed with the SEC on March 5, 2020.
Use of Estimates	Use of Estimates The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make certain estimates, judgments, and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, as well as the reported amounts of revenue and expenses during the reporting period. For us, these estimates include, but are not limited to, revenue recognition, allowances for doubtful accounts, fair values of financial instruments, useful lives of fixed assets, the incremental borrowing rate ("IBR") we use to determine our operating lease liabilities, income taxes, valuation of deferred tax assets and liabilities, valuation of intangible assets, useful lives of intangible assets, assets acquired and liabilities assumed through business combinations, fair value of our common stock prior to our IPO, valuation of stock-based compensation, capitalization of software costs and software implementation costs, customer life for capitalized commissions, and other contingencies, among others. Actual results could differ from those estimates, and such differences could be material to our financial position and results of operations.
Accounting Pronouncements Recently Adopted	Accounting Pronouncements Recently Adopted In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , and subsequent amendments, which requires the measurement and recognition of expected credit losses for financial assets held at amortized cost, including trade receivables. This update replaces the existing incurred loss impairment model with an expected loss methodology, which will result in more timely recognition of credit losses. The new impairment methodology eliminates the probable initial recognition threshold and, instead, estimates the expected credit losses in consideration of past events, current conditions and forecasted information. It also eliminates the concept of other-than-temporary impairment and requires credit losses related to available-for-sale debt securities to be recorded through an allowance for credit losses rather than as a reduction in the amortized cost basis of the securities.
Accounts Receivable	Accounts ReceivableWe record accounts receivable at the original invoiced amount, net of allowances for credit losses for any potential uncollectible amounts. We make estimates of expected credit losses for the allowance for doubtful accounts based upon our assessment of various factors, including historical experience, the age of the accounts receivable balances, credit quality of our customers, current economic conditions, reasonable and supportable forecasts of future economic conditions, and other factors that may affect our ability to collect from customers. Accounts receivable deemed uncollectible are charged against the allowance for credit losses when identified.
Marketable Securities	Marketable Securities Our marketable securities consist of investments in U.S. treasury securities, asset-backed securities, corporate bonds, commercial paper, and supranational bonds. We classify our investments in debt securities as available-for-sale at the time of purchase. We consider all debt securities as available for use in current operations, including those with maturity dates beyond one year, and therefore classify these securities as current assets in the consolidated balance sheets. When the fair value of a security is below its amortized cost, the amortized cost will be reduced to its fair value if it is more likely than not that we are required to sell the impaired security before recovery of its amortized cost basis, or we have the intention to sell the security. If neither of these conditions is met, we determine whether the impairment is due to credit losses by comparing the present value of the expected cash flows of the security with its amortized cost basis. The amount of impairment recognized is limited to the excess of the amortized cost over the fair value of the security. An allowance for credit losses for the excess of amortized cost over the expected cash flows is recorded in interest income and other expense, net in our condensed consolidated statements of operations. Impairment losses that are not credit-related are included in accumulated other comprehensive loss in stockholders’ equity.
Revenue Recognition	Contract Balances Timing of revenue recognition may differ from the timing of invoicing to customers. Contract assets relate to performance completed in advance of scheduled billings. The primary changes in our contract assets and contract liabilities are due to our performance under the contracts and billings.

Revenue (Tables)

Revenue (Tables)	3 Months Ended
	Mar. 31, 2021
Revenue from Contract with Customer [Abstract]
Schedule of Revenue by Source	The following table presents our revenue disaggregated by source (in thousands): Three Months Ended March 31, 2021 2020 Create Solutions $ 70,387 $ 46,696 Operate Solutions 146,578 104,368 Strategic Partnerships and Other 17,807 15,930 Total revenue $ 234,772 $ 166,994
Schedule of Revenue by Geographic Area	The following table presents our revenue disaggregated by geography, based on the invoice address of our customers (in thousands): Three Months Ended March 31, 2021 2020 United States $ 57,006 $ 40,490 Greater China (1)(2) 36,549 23,756 EMEA (1)(3) 86,102 64,691 APAC (1)(4) 45,679 30,411 Other Americas (1)(5) 9,436 7,646 Total revenue $ 234,772 $ 166,994 (1) No individual country, other than those disclosed above, exceeded 10% of our total revenue for any period presented. (2) Greater China includes China, Hong Kong, and Taiwan. (3) Europe, the Middle East, and Africa (“EMEA”) (4) Asia- Pacific , excluding Greater China (“APAC”) (5) Canada and Latin America (“Other Americas”)

Cash Equivalents and Marketab_2

Cash Equivalents and Marketable Securities (Tables)	3 Months Ended
	Mar. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Schedule of Cash Equivalents and Marketable Securities	Cash equivalents and marketable securities consisted of the following as of March 31, 2021 (in thousands) : Amortized Cost Unrealized Gains Unrealized Losses Fair Value Cash equivalents: Money market funds $ 284,042 $ — $ — $ 284,042 Commercial paper 33,992 — — 33,992 Total cash equivalents $ 318,034 $ — $ — $ 318,034 Marketable securities: Asset-backed securities $ 58,383 $ 9 $ (26) $ 58,366 Corporate bonds 93,036 3 (82) 92,957 U.S. treasury securities 328,239 74 (7) 328,306 Supranational bonds 47,692 5 (26) 47,671 Total marketable securities $ 527,350 $ 91 $ (141) $ 527,300 Cash equivalents and marketable securities consisted of the following as of December 31, 2020 (in thousands) : Amortized Cost Unrealized Gains Unrealized Losses Fair Value Cash equivalents: Money market funds $ 660,086 $ — $ — $ 660,086 Commercial paper 75,726 — — 75,726 Total cash equivalents $ 735,812 $ — $ — $ 735,812 Marketable securities: Asset-backed securities $ 49,950 $ 54 $ (39) $ 49,965 Corporate bonds 92,312 31 (21) 92,322 U.S. treasury securities 327,025 81 (56) 327,050 Supranational bonds 10,066 4 (1) 10,069 Total marketable securities $ 479,353 $ 170 $ (117) $ 479,406
Schedule of Cash Equivalents	Cash equivalents and marketable securities consisted of the following as of March 31, 2021 (in thousands) : Amortized Cost Unrealized Gains Unrealized Losses Fair Value Cash equivalents: Money market funds $ 284,042 $ — $ — $ 284,042 Commercial paper 33,992 — — 33,992 Total cash equivalents $ 318,034 $ — $ — $ 318,034 Marketable securities: Asset-backed securities $ 58,383 $ 9 $ (26) $ 58,366 Corporate bonds 93,036 3 (82) 92,957 U.S. treasury securities 328,239 74 (7) 328,306 Supranational bonds 47,692 5 (26) 47,671 Total marketable securities $ 527,350 $ 91 $ (141) $ 527,300 Cash equivalents and marketable securities consisted of the following as of December 31, 2020 (in thousands) : Amortized Cost Unrealized Gains Unrealized Losses Fair Value Cash equivalents: Money market funds $ 660,086 $ — $ — $ 660,086 Commercial paper 75,726 — — 75,726 Total cash equivalents $ 735,812 $ — $ — $ 735,812 Marketable securities: Asset-backed securities $ 49,950 $ 54 $ (39) $ 49,965 Corporate bonds 92,312 31 (21) 92,322 U.S. treasury securities 327,025 81 (56) 327,050 Supranational bonds 10,066 4 (1) 10,069 Total marketable securities $ 479,353 $ 170 $ (117) $ 479,406
Schedule of Maturities for Marketable Securities	The following table summarizes the amortized cost and fair value of our marketable securities as of March 31, 2021, by contractual years to maturity (in thousands): Amortized Cost Fair Value Due within one year $ 325,424 $ 325,446 Due between one and two years 201,926 201,854 Total $ 527,350 $ 527,300

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2021
Fair Value Disclosures [Abstract]
Schedule of Fair Value of Assets Measured on Recurring Basis	The following table presents the fair value of our financial assets and liabilities measured at fair value on a recurring basis using the above input categories as of March 31, 2021 (in thousands): Level 1 Level 2 Level 3 Total Cash equivalents: Money market funds $ 284,042 $ — $ — $ 284,042 Commercial paper — 33,992 — 33,992 Total cash equivalents $ 284,042 $ 33,992 $ — $ 318,034 Marketable securities: Asset-backed securities $ — $ 58,366 $ — $ 58,366 Corporate bonds — 92,957 — 92,957 U.S. treasury securities — 328,306 — 328,306 Supranational bonds — 47,671 — 47,671 Total marketable securities $ — $ 527,300 $ — $ 527,300 The following table presents the fair value of our financial assets and liabilities measured at fair value on a recurring basis using the above input categories as of December 31, 2020 (in thousands): Level 1 Level 2 Level 3 Total Cash equivalents: Money market funds $ 660,086 $ — $ — $ 660,086 Commercial paper — 75,726 — 75,726 Total cash equivalents $ 660,086 $ 75,726 $ — $ 735,812 Marketable securities: Asset-backed securities $ — $ 49,965 $ — $ 49,965 Corporate bonds — 92,322 — 92,322 U.S. treasury securities — 327,050 — 327,050 Supranational bonds — 10,069 — 10,069 Total marketable securities $ — $ 479,406 $ — $ 479,406

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The following table presents the changes in the carrying amount of goodwill for the three months ended March 31, 2021 (in thousands): Balance as of December 31, 2020 $ 286,251 Goodwill from acquisition 19,909 Balance as of March 31, 2021 $ 306,160
Schedule of Intangible Assets	The following tables present details of our intangible assets, excluding goodwill (in thousands, except for weighted-average useful life): As of March 31, 2021 Weighted-Average (1) Gross Accumulated Net Developed technology 5.8 $ 86,374 $ (35,515) $ 50,859 Customer relationships 2.1 15,431 (9,765) 5,666 Trademark 3.3 3,657 (2,242) 1,415 Total intangible assets $ 105,462 $ (47,522) $ 57,940 As of December 31, 2020 Weighted‑Average (1) Gross Accumulated Net Developed technology 5.8 $ 83,688 $ (32,342) $ 51,346 Customer relationships 2.2 13,327 (8,682) 4,645 Trademark 3.3 3,507 (2,039) 1,468 Total intangible assets $ 100,522 $ (43,063) $ 57,459 (1) Based on weighted-average useful life established as of the acquisition date.
Schedule of Finite-lived Intangible Assets Amortization Expense	The following table presents the amortization of finite-lived intangible assets included on our condensed consolidated statements of operations and comprehensive loss (in thousands): Three Months Ended March 31, 2021 2020 Amortization expense $ 4,459 $ 4,144
Schedule of Finite-Lived Intangible Assets Future Amortization Expense	As of March 31, 2021, the estimated future amortization of finite-lived intangible assets for each of the next five years and thereafter was as follows (in thousands): Remainder of 2021 $ 13,412 2022 15,296 2023 11,922 2024 11,281 2025 5,507 Thereafter 522 Total $ 57,940

Balance Sheet Components (Table

Balance Sheet Components (Tables)	3 Months Ended
	Mar. 31, 2021
Property, Plant and Equipment [Abstract]
Schedule of Property and Equipment	The following tables provide details of selected balance sheet items (in thousands): As of March 31, December 31, Property and equipment, net: Gross property and equipment Leasehold improvements $ 69,064 $ 65,669 Computer and other hardware 62,710 58,568 Furniture 24,448 23,685 Internally developed software 2,043 3,301 Purchased software 1,443 1,436 Construction in progress 13,935 13,343 Total gross property and equipment 173,643 166,002 Accumulated depreciation and amortization (1) (76,046) (70,458) Property and equipment, net $ 97,597 $ 95,544 (1) The following table presents the depreciation and amortization of property and equipment included on our condensed consolidated statements of operations and comprehensive loss (in thousands): Three Months Ended March 31, 2021 2020 Depreciation and amortization expense $ 7,373 $ 5,666
Schedule of Long-lived Assets by Geographic Areas	The following table presents our long-lived assets, net, disaggregated by geography, which consists of our property and equipment, net, but excludes internally developed software and purchased software (in thousands): As of March 31, December 31, United States $ 34,520 $ 35,494 Canada 24,202 20,063 United Kingdom 17,373 17,846 Greater China 5,214 5,653 EMEA, excluding United Kingdom (1) 11,112 11,181 APAC (1) 3,258 3,546 Other Americas, excluding Canada (1) 791 809 Total long-lived assets, net $ 96,470 $ 94,592 (1) No individual country, other than those disclosed above, exceeded 10% of our total long-lived assets, net, for any period presented.
Schedule of Accrued Expenses and Current Liabilities	As of March 31, December 31, Accrued expenses and other current liabilities: Accrued expenses $ 47,821 $ 53,535 Accrued compensation 44,111 52,771 Accrued expenses and other current liabilities $ 91,932 $ 106,306

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2021
Leases [Abstract]
Schedule of Lease Cost	Components of lease expense were as follows (in thousands): Three Months Ended March 31, 2021 2020 Operating lease expense, excluding ROU asset impairment $ 7,301 $ 7,113 Short-term lease expense 117 307 Variable lease expense 975 1,700 Sublease income (93) (18) Total lease expense $ 8,300 $ 9,102 Other information related to operating leases was as follows (in thousands): Three Months Ended March 31, 2021 2020 Cash paid for amounts included in the measurement of operating lease liabilities $ 7,840 $ 6,395 Operating lease ROU assets obtained in exchange for new operating lease liabilities $ 18,891 $ 14,229
Schedule of Future Minimum Lease Payments	As of March 31, 2021, future minimum lease payments under our non-cancellable operating leases were as follows (in thousands): Operating Leases (1) Remainder of 2021 $ 22,941 2022 29,638 2023 24,194 2024 21,136 2025 16,180 Thereafter 41,550 Total future minimum lease payments 155,639 Less: imputed interest (20,205) Present value of lease liabilities $ 135,434 (1) Excludes future minimum payments for leases which have not yet commenced as of March 31, 2021.

Commitment and Contingencies (T

Commitment and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Maturities of Future Purchase Obligations	The following table summarizes our non‑cancellable contractual commitments as of March 31, 2021 (in thousands): Total Remainder of 2021 2022‑2023 2024‑2025 Purchase commitments (1) $ 128,980 $ 22,925 $ 90,430 $ 15,625 (1) The substantial majority of our purchase commitments are related to agreements with our data center hosting providers.

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2021
Share-based Payment Arrangement [Abstract]
Schedule of Stock-Based Compensation Expense	We recorded stock-based compensation expense related to grants to employees, including those in connection with modified awards, on our condensed consolidated statements of operations as follows (in thousands): Three Months Ended March 31, 2021 2020 Cost of revenue $ 5,117 $ 557 Research and development 31,650 4,789 Sales and marketing 12,037 1,847 General and administrative 17,757 2,498 Total stock-based compensation expense $ 66,561 $ 9,691
Schedule of Stock Options	A summary of our stock option activity under the 2009 Stock Plan, 2019 Stock Plan, and 2020 Plan is as follows: Options Outstanding Stock Weighted-Average Weighted-Average Balance as of December 31, 2020 40,457,875 $ 8.03 6.87 Granted 1,003,064 $ 104.74 Exercised (4,544,498) $ 5.00 Forfeited, cancelled, or expired (78,076) $ 13.01 Balance as of March 31, 2021 36,838,365 $ 11.03 6.78
Summary of Valuation Assumptions of Stock Options	The calculated grant-date fair value of stock options granted was estimated using the Black-Scholes option-pricing model with the following assumptions: Three Months Ended March 31, 2021 Expected dividend yield — Risk-free interest rate 0.9% Expected volatility 36.0% Expected term (in years) 6.25 Fair value of underlying common stock $102.80 - $108.10
Summary of Restricted Stock Unit Activity	A summary of our RSU activity under the 2019 Stock Plan and 2020 Plan is as follows: Unvested Restricted Stock Units Number of Weighted-Average Unvested as of December 31, 2020 9,561,791 $ 53.79 Granted 2,044,015 $ 107.49 Vested (284,213) $ 40.63 Forfeited (58,473) $ 71.68 Unvested as of March 31, 2021 11,263,120 $ 63.77

Net Loss per Share of Common _2

Net Loss per Share of Common Stock (Tables)	3 Months Ended
	Mar. 31, 2021
Earnings Per Share [Abstract]
Schedule of Basic and Diluted Earnings 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 March 31, 2021 2020 Basic and diluted net loss per share Numerator: Net loss attributable to our common stockholders $ (107,460) $ (26,736) Denominator: Weighted-average common shares used in per share computation, basic and diluted 276,068 127,783 Net loss per share, basic and diluted $ (0.39) $ (0.21)
Schedule of Antidilutive Securities Excluded from Computation of Diluted Earnings Per Share	The following table presents the forms of antidilutive potential common shares excluded from the computation of diluted net loss per share for the following periods (in thousands): Three Months Ended March 31, 2021 2020 Convertible preferred stock — 102,717 Stock options 36,838 44,157 RSUs 11,263 —

Description of Business and S_3

Description of Business and Summary of Significant Accounting Policies - Contract Balances (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Unbilled receivables	$ 29.7	$ 26.3
Revenue recognized	$ 43.8

Description of Business and S_4

Description of Business and Summary of Significant Accounting Policies - Sales Commissions (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Capitalized Contract Cost [Line Items]
Capitalized contract cost in period	$ 2,600,000	$ 1,400,000
Capitalized contract cost, amortization	1,000,000	100,000
Capitalized contract cost, impairment loss	0	$ 0
Other Current Assets
Capitalized Contract Cost [Line Items]
Capitalized contract costs	3,800,000		$ 2,900,000
Other Assets
Capitalized Contract Cost [Line Items]
Capitalized contract costs	$ 5,100,000		$ 4,400,000

Summary of Accounting Pronoun_2

Summary of Accounting Pronouncements (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Jan. 01, 2021	Dec. 31, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accumulated deficit	$ 906,480		$ 797,498
Allowance for credit losses	$ 4,579		$ 2,714
Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accumulated deficit		$ 1,500

Revenue - Disaggregation of Rev

Revenue - Disaggregation of Revenue By Source (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue	$ 234,772	$ 166,994
Create Solutions
Disaggregation of Revenue [Line Items]
Revenue	70,387	46,696
Operate Solutions
Disaggregation of Revenue [Line Items]
Revenue	146,578	104,368
Strategic Partnerships and Other
Disaggregation of Revenue [Line Items]
Revenue	$ 17,807	$ 15,930

Revenue - Disaggregation of R_2

Revenue - Disaggregation of Revenue by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue	$ 234,772	$ 166,994
United States
Disaggregation of Revenue [Line Items]
Revenue	57,006	40,490
Greater China
Disaggregation of Revenue [Line Items]
Revenue	36,549	23,756
EMEA
Disaggregation of Revenue [Line Items]
Revenue	86,102	64,691
APAC
Disaggregation of Revenue [Line Items]
Revenue	45,679	30,411
Other Americas
Disaggregation of Revenue [Line Items]
Revenue	$ 9,436	$ 7,646

Revenue - Contract Balances (De

Revenue - Contract Balances (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Unbilled receivables	$ 29.7	$ 26.3
Revenue recognized	$ 43.8

Revenue - Remaining Performance

Revenue - Remaining Performance Obligations (Details) $ in Millions	Mar. 31, 2021USD ($)
Disaggregation of Revenue [Line Items]
Revenue, remaining performance obligation, amount	$ 218.5
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01
Disaggregation of Revenue [Line Items]
Revenue, remaining performance obligation, amount	$ 98.2
Revenue, remaining performance obligation, percentage	45.00%
Recognition period	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01
Disaggregation of Revenue [Line Items]
Revenue, remaining performance obligation, amount	$ 120.3
Revenue, remaining performance obligation, percentage	55.00%
Recognition period

Cash Equivalents and Marketab_3

Cash Equivalents and Marketable Securities - Schedule of Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 527,350	$ 479,353
Unrealized Gains	91	170
Unrealized Losses	(141)	(117)
Marketable securities	527,300	479,406
Money market funds
Debt Securities, Available-for-sale [Line Items]
Cash equivalents, amortized cost	284,042	660,086
Cash equivalents	284,042	660,086
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Cash equivalents, amortized cost	33,992	75,726
Cash equivalents	33,992	75,726
Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Cash equivalents, amortized cost	318,034	735,812
Cash equivalents	318,034	735,812
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	58,383	49,950
Unrealized Gains	9	54
Unrealized Losses	(26)	(39)
Marketable securities	58,366	49,965
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	93,036	92,312
Unrealized Gains	3	31
Unrealized Losses	(82)	(21)
Marketable securities	92,957	92,322
U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	328,239	327,025
Unrealized Gains	74	81
Unrealized Losses	(7)	(56)
Marketable securities	328,306	327,050
Supranational bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	47,692	10,066
Unrealized Gains	5	4
Unrealized Losses	(26)	(1)
Marketable securities	$ 47,671	$ 10,069

Cash Equivalents and Marketab_4

Cash Equivalents and Marketable Securities - Maturity of Marketable Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Amortized Cost
Due within one year	$ 325,424
Due between one and two years	201,926
Amortized Cost	527,350	$ 479,353
Fair Value
Due within one year	325,446
Due between one and two years	201,854
Fair Value	$ 527,300	$ 479,406

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	$ 527,300	$ 479,406
Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents, fair value	318,034	735,812
Marketable securities	527,300	479,406
Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	58,366	49,965
Asset-backed securities | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	58,366	49,965
Corporate bonds | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	92,957	92,322
U.S. treasury securities | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	328,306	327,050
Supranational bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	47,671	10,069
Supranational bonds | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	47,671	10,069
Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents, fair value	284,042	660,086
Money market funds | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents, fair value	284,042	660,086
Commercial paper
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents, fair value	33,992	75,726
Commercial paper | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents, fair value	33,992	75,726
Level 1 | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents, fair value	284,042	660,086
Marketable securities	0	0
Level 1 | Asset-backed securities | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Level 1 | Corporate bonds | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Level 1 | U.S. treasury securities | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Level 1 | Supranational bonds | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Level 1 | Money market funds | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents, fair value	284,042	660,086
Level 1 | Commercial paper | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents, fair value	0	0
Level 2 | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents, fair value	33,992	75,726
Marketable securities	527,300	479,406
Level 2 | Asset-backed securities | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	58,366	49,965
Level 2 | Corporate bonds | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	92,957	92,322
Level 2 | U.S. treasury securities | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	328,306	327,050
Level 2 | Supranational bonds | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	47,671	10,069
Level 2 | Money market funds | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents, fair value	0	0
Level 2 | Commercial paper | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents, fair value	33,992	75,726
Level 3 | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents, fair value	0	0
Marketable securities	0	0
Level 3 | Asset-backed securities | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Level 3 | Corporate bonds | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Level 3 | U.S. treasury securities | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Level 3 | Supranational bonds | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	0	0
Level 3 | Money market funds | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents, fair value	0	0
Level 3 | Commercial paper | Fair Value, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents, fair value	$ 0	$ 0

Acquisitions - 2021 Acquisition

Acquisitions - 2021 Acquisitions (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Goodwill	$ 306,160	$ 286,251
Other Acquisitions
Business Acquisition [Line Items]
Consideration transferred	24,800
Intangible assets other than goodwill	4,900
Other assets	600
Goodwill	19,900
Other liabilities assumed	600
Transaction costs	$ 600

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Changes in Goodwill (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 286,251
Goodwill from acquisition	19,909
Ending balance	$ 306,160

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Schedule of Weighted Average Remaining Life and Carrying Value of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 105,462	$ 100,522
Accumulated Amortization	(47,522)	(43,063)
Intangible assets, net	$ 57,940	$ 57,459
Developed technology
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Useful Life (in Years)	5 years 9 months 18 days	5 years 9 months 18 days
Gross Carrying Amount	$ 86,374	$ 83,688
Accumulated Amortization	(35,515)	(32,342)
Intangible assets, net	$ 50,859	$ 51,346
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Useful Life (in Years)	2 years 1 month 6 days	3 years 3 months 18 days
Gross Carrying Amount	$ 15,431	$ 3,507
Accumulated Amortization	(9,765)	(2,039)
Intangible assets, net	$ 5,666	$ 1,468
Trademark
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Useful Life (in Years)	3 years 3 months 18 days	2 years 2 months 12 days
Gross Carrying Amount	$ 3,657	$ 13,327
Accumulated Amortization	(2,242)	(8,682)
Intangible assets, net	$ 1,415	$ 4,645

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Amortization of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 4,459	$ 4,144

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets - Expected Amortization of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Remainder of 2021	$ 13,412
2022	15,296
2023	11,922
2024	11,281
2025	5,507
Thereafter	522
Intangible assets, net	$ 57,940	$ 57,459

Balance Sheet Components - Sche

Balance Sheet Components - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Total gross property and equipment	$ 173,643		$ 166,002
Accumulated depreciation and amortization	(76,046)		(70,458)
Property and equipment, net	97,597		95,544
Depreciation and amortization expense	7,373	$ 5,666
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total gross property and equipment	69,064		65,669
Computer and other hardware
Property, Plant and Equipment [Line Items]
Total gross property and equipment	62,710		58,568
Furniture
Property, Plant and Equipment [Line Items]
Total gross property and equipment	24,448		23,685
Internally developed software
Property, Plant and Equipment [Line Items]
Total gross property and equipment	2,043		3,301
Purchased software
Property, Plant and Equipment [Line Items]
Total gross property and equipment	1,443		1,436
Construction in progress
Property, Plant and Equipment [Line Items]
Total gross property and equipment	$ 13,935		$ 13,343

Balance Sheet Components - Sc_2

Balance Sheet Components - Schedule of Long Lived Assets by Geographic Region (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Total long-lived assets, net	$ 96,470	$ 94,592
United States
Property, Plant and Equipment [Line Items]
Total long-lived assets, net	34,520	35,494
Canada
Property, Plant and Equipment [Line Items]
Total long-lived assets, net	24,202	20,063
United Kingdom
Property, Plant and Equipment [Line Items]
Total long-lived assets, net	17,373	17,846
Greater China
Property, Plant and Equipment [Line Items]
Total long-lived assets, net	5,214	5,653
EMEA, excluding United Kingdom
Property, Plant and Equipment [Line Items]
Total long-lived assets, net	11,112	11,181
APAC
Property, Plant and Equipment [Line Items]
Total long-lived assets, net	3,258	3,546
Other Americas, excluding Canada
Property, Plant and Equipment [Line Items]
Total long-lived assets, net	$ 791	$ 809

Balance Sheet Components - Sc_3

Balance Sheet Components - Schedule of Accrued Expenses and Current Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Accrued expenses	$ 47,821	$ 53,535
Accrued compensation	44,111	52,771
Accrued expenses and other current liabilities	$ 91,932	$ 106,306

Balance Sheet Components - Narr

Balance Sheet Components - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Capitalized contract cost in period	$ 2,600,000	$ 1,400,000
Capitalized contract cost, amortization	1,000,000	100,000
Capitalized contract cost, impairment loss	0	$ 0
Other Current Assets
Property, Plant and Equipment [Line Items]
Capitalized contract costs	3,800,000		$ 2,900,000
Other Assets
Property, Plant and Equipment [Line Items]
Capitalized contract costs	$ 5,100,000		$ 4,400,000

Leases - Narrative (Details)

Leases - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2021USD ($)
Lessee, Lease, Description [Line Items]
Operating lease, weighted average remaining lease term	6 years 4 months 20 days
Operating lease, weighted average discount rate, percent	4.30%
Lessee, operating lease, lease not yet commenced, undiscounted amount	$ 136.8
Minimum
Lessee, Lease, Description [Line Items]
Operating lease term	1 year
Operating lease renewal term	1 year
Operating lease termination period	1 year
Maximum
Lessee, Lease, Description [Line Items]
Operating lease term	10 years 9 months
Operating lease renewal term	5 years
Operating lease termination period	5 years

Leases - Schedule of Lease Cost

Leases - Schedule of Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Leases [Abstract]
Operating lease expense, excluding ROU asset impairment	$ 7,301	$ 7,113
Short-term lease expense	117	307
Variable lease expense	975	1,700
Sublease income	(93)	(18)
Total lease expense	$ 8,300	$ 9,102

Leases - Other Information (Det

Leases - Other Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Leases [Abstract]
Cash paid for amounts included in the measurement of operating lease liabilities	$ 7,840	$ 6,395
Operating lease ROU assets obtained in exchange for new operating lease liabilities	$ 18,891	$ 14,229

Leases - Schedule of Future Min

Leases - Schedule of Future Minimum Lease Payments (Details) $ in Thousands	Mar. 31, 2021USD ($)
Leases [Abstract]
Remainder of 2021	$ 22,941
2022	29,638
2023	24,194
2024	21,136
2025	16,180
Thereafter	41,550
Total future minimum lease payments	155,639
Less: imputed interest	(20,205)
Present value of lease liabilities	$ 135,434

Borrowings - Narrative (Details

Borrowings - Narrative (Details) - USD ($)	1 Months Ended		3 Months Ended
	Sep. 30, 2020	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020	Dec. 20, 2019
Debt Instrument [Line Items]
Proceeds from revolving loan facility			$ 0	$ 125,000,000
Minimum liquidity balance			75,000,000
Credit Agreement
Debt Instrument [Line Items]
Debt related commitment fees			100,000	$ 100,000
Amortization of debt issuance costs			$ 100,000
Ownership in capital stock of restricted subsidiaries			65.00%
Credit Agreement | Revolving Facility
Debt Instrument [Line Items]
Maximum borrowing capacity					$ 125,000,000
Commitment fee percentage			0.25%
Current borrowing			$ 125,000,000
Proceeds from revolving loan facility		$ 125,000,000
Repayments of lines of credit	$ 125,000,000
Credit Agreement | LC Capacity
Debt Instrument [Line Items]
Maximum borrowing capacity					$ 20,000,000
Unused capacity commitment fee			1.50%
Unused capacity fronting fee			0.125%
Credit Agreement | Base Rate | Revolving Facility
Debt Instrument [Line Items]
Debt basis spread			0.50%
Interest rate floor			1.00%
Credit Agreement | LIBOR | Revolving Facility
Debt Instrument [Line Items]
Debt basis spread			1.50%
Credit Agreement | Federal Funds Rate | Revolving Facility
Debt Instrument [Line Items]
Debt basis spread			0.50%
Credit Agreement | Eurodollar | Revolving Facility
Debt Instrument [Line Items]
Debt basis spread			1.00%

Commitment and Contingencies -

Commitment and Contingencies - Future Purchase Obligations (Details) $ in Thousands	Mar. 31, 2021USD ($)
Commitments and Contingencies Disclosure [Abstract]
Total	$ 128,980
Remainder of 2021	22,925
2022‑2023	90,430
2024‑2025	$ 15,625

Commitment and Contingencies _2

Commitment and Contingencies - Narrative (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Letter of Credit
Long-term Purchase Commitment [Line Items]
Letter of credit outstanding		$ 18.1		$ 21.4
Cloud Service
Long-term Purchase Commitment [Line Items]
Term of commitment	6 years
Minimum commitment amount		210.5
Commitment amount spent		$ 25.1	$ 11.8

Stockholders' Equity and Empl_2

Stockholders' Equity and Employee Compensation Plans - Narrative (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended
	Jan. 31, 2020	Mar. 31, 2021
Class of Stock [Line Items]
Issuance of stock (in shares)	4,500,000
Proceeds from issuance of stock	$ 100
2020 Plan
Class of Stock [Line Items]
Grant date fair value of owners with more than 10% of voting power		110.00%
Options issued (in shares)		87,000,000
Number of shares available for grant (in shares)		38,900,000
Stock options | 2020 Plan
Class of Stock [Line Items]
Option expiration period		10 years
Stock Appreciation Rights (SARs) | 2020 Plan
Class of Stock [Line Items]
Option expiration period		10 years
Incentive Stock Option | 2020 Plan
Class of Stock [Line Items]
Option expiration period		5 years
Employee Stock
Class of Stock [Line Items]
Options issued (in shares)		8,023,463
Number of shares available for grant (in shares)		8,023,463
Permitted amount of earnings used to purchase ESPP		15.00%
Common stock purchase price percent for ESPP		85.00%

Stock-Based Compensation - Stoc

Stock-Based Compensation - Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expense	$ 66,561	$ 9,691
Cost of revenue
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expense	5,117	557
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expense	31,650	4,789
Sales and marketing
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expense	12,037	1,847
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation expense	$ 17,757	$ 2,498

Stock-Based Compensation - Narr

Stock-Based Compensation - Narrative (Details) - USD ($)	1 Months Ended	3 Months Ended
	Mar. 31, 2021	Jun. 30, 2021	Mar. 31, 2021	Mar. 31, 2020
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Unrecognized share-based compensation cost related to unvested stock option awards	$ 139,400,000		$ 139,400,000
Stock-based compensation expense			66,561,000	$ 9,691,000
Intrinsic value of stock options exercised			$ 515,300,000	10,400,000
Weighted average grant date fair value of stock options granted (USD per share)			$ 38.40
Fair value of stock options vested in period			$ 6,300,000
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense			17,757,000	$ 2,498,000
Chief Financial Officer
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Severance benefit payment	300,000
Stock-based compensation expense			12,400,000
Chief Financial Officer | Forecast
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense		$ 10,300,000
Chief Financial Officer | General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense			$ 2,100,000
Stock options
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Expected period for recognition			2 years 3 months 10 days
Expected dividend yield			$ 0
RSUs
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Expected period for recognition			3 years 2 months 26 days
Unrecognized share-based compensation cost related to unvested restricted stock units	$ 617,400,000		$ 617,400,000
RSUs | Minimum | Pre IPO
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Options vesting period			2 years
RSUs | Minimum | Post IPO
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Options vesting period			1 year
RSUs | Maximum | Pre IPO
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Options vesting period			4 years
RSUs | Maximum | Post IPO
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Options vesting period			4 years

Stock-Based Compensation - Sche

Stock-Based Compensation - Schedule of Stock Options (Details) - $ / shares	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Stock Options Outstanding
Balance as of December 31, 2019 (in shares)	40,457,875
Granted (in shares)	1,003,064
Exercised (in shares)	(4,544,498)
Forfeited, cancelled, or expired (in shares)	(78,076)
Balance as of September 30, 2020 (in shares)	36,838,365	40,457,875
Weighted-Average Exercise Price
Balance as of December 31, 2019 (USD per share)	$ 8.03
Granted (USD per share)	104.74
Exercised (USD per share)	5
Forfeited, cancelled, or expired (USD per share)	13.01
Balance as of September 30, 2020 (USD per share)	$ 11.03	$ 8.03
Stock Option Activity, Additional Disclosures
Options outstanding, Weighted average remaining contractual term	6 years 9 months 10 days	6 years 10 months 13 days

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Valuation Assumptions of Stock Options (Details) - Stock options	3 Months Ended
	Mar. 31, 2021USD ($)$ / shares
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Expected dividend yield | $	$ 0
Risk-free interest rate	0.90%
Expected volatility	36.00%
Expected term (in years)	6 years 3 months
Minimum
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Fair value of underlying common stock (USD per share)	$ 102.80
Maximum
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Fair value of underlying common stock (USD per share)	$ 108.10

Stock-Based Compensation - Su_2

Stock-Based Compensation - Summary of Restricted Stock Unit Activity (Details) - RSUs	3 Months Ended
	Mar. 31, 2021$ / sharesshares
Unvested Restricted Stock Units
Unvested as of December 31, 2019 (in shares) | shares	9,561,791
Granted (in shares) | shares	2,044,015
Vested (in shares) | shares	(284,213)
Forfeited (in shares) | shares	(58,473)
Unvested as of September 30, 2020 (in shares) | shares	11,263,120
Weighted-Average Grant-Date Fair Value
Unvested as of December 31, 2019 (USD per share) | $ / shares	$ 53.79
Granted (USD per share) | $ / shares	107.49
Vested (USD per share) | $ / shares	40.63
Forfeited (USD per share) | $ / shares	71.68
Unvested as of September 30, 2020 (USD per share) | $ / shares	$ 63.77

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) $ in Millions	Mar. 31, 2021USD ($)
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 79.5
Unrecognized tax benefits that would impact effective tax rate	9.1
Decrease in unrecognized tax benefits is reasonably possible	$ 1.6

Net Loss per Share of Common _3

Net Loss per Share of Common Stock - Schedule of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Numerator:
Net loss attributable to our common stockholders	$ (107,460)	$ (26,736)
Net loss attributable to our common stockholders	$ (107,460)	$ (26,736)
Denominator:
Weighted-average shares used in per share calculation attributable to our common stockholders, basic and diluted (in shares)	276,068	127,783
Net loss per share, basic and diluted (USD per share)	$ (0.39)	$ (0.21)

Net Loss per Share of Common _4

Net Loss per Share of Common Stock - Antidilutive Securities Excluded From Computation (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Convertible preferred stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	102,717
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	36,838	44,157
RSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	11,263	0