Snap (SNAP) 10-Q 22 Oct 21 2021 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2021	Oct. 19, 2021
Entity Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Trading Symbol	SNAP
Entity Central Index Key	0001564408
Entity Registrant Name	SNAP INC
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Title of 12(b) Security	Class A Common Stock, par value $0.00001 per share
Security Exchange Name	NYSE
Entity File Number	001-38017
Entity Tax Identification Number	45-5452795
Entity Address, Address Line One	3000 31st Street
Entity Address, City or Town	Santa Monica
Entity Address, State or Province	CA
Entity Incorporation, State or Country Code	DE
Entity Address, Postal Zip Code	90405
City Area Code	(310)
Local Phone Number	399-3339
Document Quarterly Report	true
Document Transition Report	false
Class A Common Stock
Entity Information [Line Items]
Entity Common Stock Shares Outstanding		1,355,494,143
Class B Common Stock
Entity Information [Line Items]
Entity Common Stock Shares Outstanding		22,676,420
Class C Common Stock
Entity Information [Line Items]
Entity Common Stock Shares Outstanding		231,626,943

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities
Net loss	$ (71,959)	$ (199,853)	$ (510,505)	$ (831,740)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	32,510	21,804	84,278	63,933
Stock-based compensation	300,898	192,080	794,571	550,300
Amortization of debt discount and issuance costs	1,109	24,503	3,301	56,478
(Gains) losses on debt and equity securities, net	(121,007)	4,142	(223,527)	12,114
Induced conversion expense related to convertible notes	4,536		41,538
Other	(732)	1,924	4,019	(443)
Change in operating assets and liabilities, net of effect of acquisitions:
Accounts receivable, net of allowance	(132,908)	(151,856)	(178,044)	(43,310)
Prepaid expenses and other current assets	(4,191)	(10,608)	(15,562)	(19,352)
Operating lease right-of-use assets	11,470	10,054	35,217	28,307
Other assets	(4,204)	3,390	(5,440)	2,343
Accounts payable	11,084	3,435	17,430	11,448
Accrued expenses and other current liabilities	56,687	61,595	89,726	94,368
Operating lease liabilities	(13,911)	(15,760)	(35,265)	(40,739)
Other liabilities	2,170	322	5,615	1,194
Net cash provided by (used in) operating activities	71,552	(54,828)	107,352	(115,099)
Cash flows from investing activities
Purchases of property and equipment	(19,836)	(14,727)	(45,310)	(41,385)
Strategic investments	(735)	(3,500)	(33,510)	(95,341)
Cash paid for acquisitions, net of cash acquired	(37,375)	(33,508)	(176,591)	(53,712)
Purchases of marketable securities	(609,176)	(1,148,344)	(1,896,766)	(2,576,892)
Sales of marketable securities	19,999	155,899	367,555	373,857
Maturities of marketable securities	492,921	668,930	2,006,744	1,898,176
Other	(1,000)		35,100	(500)
Net cash provided by (used in) investing activities	(155,202)	(375,250)	257,222	(495,797)
Cash flows from financing activities
Proceeds from issuance of convertible notes, net of issuance costs			1,137,227	988,582
Purchase of capped calls			(86,825)	(100,000)
Proceeds from the exercise of stock options	4,045	2,434	11,755	26,041
Net cash provided by financing activities	4,045	2,434	1,062,157	914,623
Change in cash, cash equivalents, and restricted cash	(79,605)	(427,644)	1,426,731	303,727
Cash, cash equivalents, and restricted cash, beginning of period	2,052,879	1,252,631	546,543	521,260
Cash, cash equivalents, and restricted cash, end of period	1,973,274	824,987	1,973,274	824,987
Supplemental disclosures
Cash paid for income taxes, net	1,940	1,309	16,228	2,679
Cash paid for interest	$ 3,508	$ 5,113	$ 10,249	$ 10,378

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Revenue	$ 1,067,471	$ 678,668	$ 2,819,163	$ 1,595,304
Costs and expenses:
Cost of revenue	443,473	293,095	1,301,095	796,959
Research and development	412,021	283,639	1,131,272	783,115
Sales and marketing	217,526	143,511	547,536	397,834
General and administrative	175,275	126,287	516,202	382,232
Total costs and expenses	1,248,295	846,532	3,496,105	2,360,140
Operating loss	(180,824)	(167,864)	(676,942)	(764,836)
Interest income	1,257	2,801	3,645	16,158
Interest expense	(4,031)	(28,212)	(13,626)	(68,052)
Other income (expense), net	112,631	(5,669)	176,971	(14,483)
Loss before income taxes	(70,967)	(198,944)	(509,952)	(831,213)
Income tax benefit (expense)	(992)	(909)	(553)	(527)
Net loss	$ (71,959)	$ (199,853)	$ (510,505)	$ (831,740)
Net loss per share attributable to Class A, Class B, and Class C common stockholders (Note 3):
Basic	$ (0.05)	$ (0.14)	$ (0.33)	$ (0.58)
Diluted	$ (0.05)	$ (0.14)	$ (0.33)	$ (0.58)
Weighted average shares used in computation of net loss per share:
Basic	1,580,966	1,466,420	1,543,568	1,446,040
Diluted	1,580,966	1,466,420	1,543,568	1,446,040

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (71,959)	$ (199,853)	$ (510,505)	$ (831,740)
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on marketable securities, net of tax	23	(1,210)	(119)	(43)
Foreign currency translation	(4,091)	10,318	(11,465)	7,969
Total other comprehensive income (loss), net of tax	(4,068)	9,108	(11,584)	7,926
Total comprehensive loss	$ (76,027)	$ (190,745)	$ (522,089)	$ (823,814)

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 1,972,358	$ 545,618
Marketable securities	1,509,463	1,991,922
Accounts receivable, net of allowance	913,539	744,288
Prepaid expenses and other current assets	76,669	56,147
Total current assets	4,472,029	3,337,975
Property and equipment, net	189,946	178,709
Operating lease right-of-use assets	291,181	269,728
Intangible assets, net	261,131	105,929
Goodwill	1,484,108	939,259
Other assets	412,770	192,638
Total assets	7,111,165	5,024,238
Current liabilities
Accounts payable	91,769	71,908
Operating lease liabilities	56,191	41,077
Accrued expenses and other current liabilities	660,536	554,342
Total current liabilities	808,496	667,327
Convertible senior notes, net	2,252,079	1,675,169
Operating lease liabilities, noncurrent	292,506	287,292
Other liabilities	317,968	64,474
Total liabilities	3,671,049	2,694,262
Commitments and contingencies (Note 8)
Stockholders’ equity
Additional paid-in capital	11,737,338	10,200,141
Accumulated other comprehensive income (loss)	9,779	21,363
Accumulated deficit	(8,307,016)	(7,891,542)
Total stockholders’ equity	3,440,116	2,329,976
Total liabilities and stockholders’ equity	7,111,165	5,024,238
Class A Non-voting Common Stock
Stockholders’ equity
Common stock, value	13	12
Class C Voting Common Stock
Stockholders’ equity
Common stock, value	$ 2	$ 2

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2021	Dec. 31, 2020
Class A Non-voting Common Stock
Common stock par value	$ 0.00001	$ 0.00001
Common stock authorized	3,000,000,000	3,000,000,000
Common stock issued	1,349,890,000	1,248,010,000
Common stock outstanding	1,349,890,000	1,248,010,000
Class B Voting Common Stock
Common stock par value	$ 0.00001	$ 0.00001
Common stock authorized	700,000,000	700,000,000
Common stock issued	23,636,000	23,696,000
Common stock outstanding	23,636,000	23,696,000
Class C Voting Common Stock
Common stock par value	$ 0.00001	$ 0.00001
Common stock authorized	260,888,000	260,888,000
Common stock issued	231,627,000	231,627,000
Common stock outstanding	231,627,000	231,627,000

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Additional Paid-in Capital	Additional Paid-in CapitalCumulative Effect, Period of Adoption, Adjustment	Accumulated Deficit	Accumulated DeficitCumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Income (Loss)	Class A Non-voting Common Stock	Class A Non-voting Common StockCommon Stock	Class A Non-voting Common StockAdditional Paid-in Capital	Class B Common Stock	Class B Common StockCommon Stock	Class C Common Stock	Class C Common StockCommon Stock	Common Class B Stock Conversion from Class C Voting Common StockCommon Stock
Balance, beginning of period, shares at Dec. 31, 2019								1,160,127			24,522		231,147
Balance, beginning of period at Dec. 31, 2019		$ 9,205,256		$ (6,945,930)	$ (779)	$ 573		$ 12					$ 2
Stock-based compensation expense		550,820
Shares issued in connection with exercise of stock options under stock-based compensation plans, shares								3,036			521
Shares issued in connection with exercise of stock options under stock-based compensation plans		26,042
Issuance of voting/non-voting common stock for vesting of restricted stock units and restricted stock awards, shares								60,446
Conversion of stock to voting/non-voting common stock, shares								5,837			(5,837)		(4,437)	4,437
Issuance of Class C voting common stock for settlement of restricted stock awards net, Shares													4,917
Equity component of convertible senior notes, net		286,589
Purchase of capped calls		(100,000)
Net loss	$ (831,740)			(831,740)			$ (680,951)			$ (13,867)		$ (136,922)
Other comprehensive income (loss), net of tax	$ 7,926					7,926
Balance, end of period, shares at Sep. 30, 2020	1,484,716							1,229,446			23,643		231,627
Balance, end of period at Sep. 30, 2020	$ 2,198,771	9,968,707		(7,778,449)		8,499		$ 12					$ 2
Balance, beginning of period, shares at Jun. 30, 2020								1,204,957			24,215		234,448
Balance, beginning of period at Jun. 30, 2020		9,773,857		(7,578,597)		(609)		$ 12					$ 2
Stock-based compensation expense		192,416
Shares issued in connection with exercise of stock options under stock-based compensation plans, shares								292			128
Shares issued in connection with exercise of stock options under stock-based compensation plans		2,434
Issuance of voting/non-voting common stock for vesting of restricted stock units and restricted stock awards, shares								19,060
Conversion of stock to voting/non-voting common stock, shares								5,137			(5,137)		(4,437)	4,437
Issuance of Class C voting common stock for settlement of restricted stock awards net, Shares													1,616
Net loss	(199,853)			(199,852)			(164,499)			(3,234)		(32,120)
Other comprehensive income (loss), net of tax	$ 9,108					9,108
Balance, end of period, shares at Sep. 30, 2020	1,484,716							1,229,446			23,643		231,627
Balance, end of period at Sep. 30, 2020	$ 2,198,771	9,968,707		(7,778,449)		8,499		$ 12					$ 2
Balance, beginning of period, shares at Dec. 31, 2020								1,248,010			23,696		231,627
Balance, beginning of period at Dec. 31, 2020	2,329,976	10,200,141	$ (664,021)	(7,891,542)	$ 95,031	21,363		$ 12					$ 2
Stock-based compensation expense		792,454
Shares issued in connection with exercise of stock options under stock-based compensation plans, shares								890			67
Shares issued in connection with exercise of stock options under stock-based compensation plans		11,755
Issuance of non-voting common stock in connection with acquisitions , shares								5,817
Issuance of non-voting common stock in connection with acquisitions									$ 308,636
Issuance of voting/non-voting common stock for vesting of restricted stock units and restricted stock awards, shares								42,636
Issuance of non-voting common stock for the induced conversion related to convertible senior notes, shares								52,410
Issuance of non-voting common stock for the induced conversion related to convertible senior notes									1,175,198
Conversion of stock to voting/non-voting common stock, shares								127			(127)
Conversion of stock to voting/non-voting common stock								$ 1
Purchase of capped calls		(86,825)
Net loss	(510,505)			(510,505)			(426,077)			(7,822)		(76,606)
Other comprehensive income (loss), net of tax	$ (11,584)					(11,584)
Balance, end of period, shares at Sep. 30, 2021	1,605,153							1,349,890			23,636		231,627
Balance, end of period at Sep. 30, 2021	$ 3,440,116	11,737,338		(8,307,016)		9,779		$ 13					$ 2
Balance, beginning of period, shares at Jun. 30, 2021								1,321,477			23,640		231,627
Balance, beginning of period at Jun. 30, 2021		11,129,196		(8,235,057)		13,847		$ 13					$ 2
Stock-based compensation expense		299,450
Shares issued in connection with exercise of stock options under stock-based compensation plans, shares								342			59
Shares issued in connection with exercise of stock options under stock-based compensation plans		4,045
Issuance of non-voting common stock in connection with acquisitions , shares								84
Issuance of voting/non-voting common stock for vesting of restricted stock units and restricted stock awards, shares								13,912
Issuance of non-voting common stock for the induced conversion related to convertible senior notes, shares								14,012
Issuance of non-voting common stock for the induced conversion related to convertible senior notes									$ 304,647
Conversion of stock to voting/non-voting common stock, shares								63			(63)
Net loss	(71,959)			(71,959)			$ (60,340)			$ (1,076)		$ (10,543)
Other comprehensive income (loss), net of tax	$ (4,068)					(4,068)
Balance, end of period, shares at Sep. 30, 2021	1,605,153							1,349,890			23,636		231,627
Balance, end of period at Sep. 30, 2021	$ 3,440,116	$ 11,737,338		$ (8,307,016)		$ 9,779		$ 13					$ 2

Description of Business and Sum

Description of Business and Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Description of Business and Summary of Significant Accounting Policies	1. Description of Business and Summary of Significant Accounting Policies Snap Inc. is a camera company. Snap Inc. (“we,” “our,” or “us”) was formed as Future Freshman, LLC, a California limited liability company, in 2010. We changed our name to Toyopa Group, LLC in 2011, incorporated as Snapchat, Inc., a Delaware corporation, in 2012, and changed our name to Snap Inc. in 2016. Snap Inc. is headquartered in Santa Monica, California. Our flagship product, Snapchat, is a camera application that was created to help people communicate through short videos and images called “Snaps.” Basis of Presentation The accompanying unaudited consolidated financial statements are prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information. Our consolidated financial statements include the accounts of Snap Inc. and our wholly owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. Our fiscal year ends on December 31. These unaudited interim consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2020, as filed with the SEC in February 2021 (the “Annual Report”). In our opinion, the unaudited interim consolidated financial statements include all adjustments of a normal recurring nature necessary for the fair presentation of our financial position, results of operations, and cash flows. Certain reclassifications have been made in the prior periods to conform to the current year's presentation. None of these reclassifications had a material impact on our consolidated financial statements. The results of operations for the three and nine months ended September 30, 2021 are not necessarily indicative of the results to be expected for the year ending December 31, 2021. Other than described below, there have been no changes to our significant accounting policies described in our Annual Report that have had a material impact on our consolidated financial statements and related notes. Use of Estimates The preparation of our consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts in the consolidated financial statements. Management’s estimates are based on historical information available as of the date of the consolidated financial statements and various other assumptions that we believe are reasonable under the circumstances. Actual results could differ from those estimates. Key estimates relate primarily to determining the fair value of assets and liabilities assumed in business combinations, evaluation of contingencies, uncertain tax positions, lease exit charges, forfeiture rate, the fair value of convertible senior notes, the fair value of stock-based awards, and the fair value of strategic investments. On an ongoing basis, management evaluates our estimates compared to historical experience and trends, which form the basis for making judgments about the carrying value of assets and liabilities . Recent Accounting Pronouncements In August 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2020-06, Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity. Under ASU 2020-06, the embedded conversion features are no longer separated from the host contract for convertible instruments with conversion features that are not required to be accounted for as derivatives under Topic 815, or that do not result in substantial premiums accounted for as paid-in capital. Consequently, a convertible debt instrument will be accounted for as a single liability measured at its amortized cost, as long as no other features require bifurcation and recognition as derivatives. The new guidance also requires the if-converted method to be applied for all convertible instruments. ASU 2020-06 is effective for fiscal years beginning after December 15, 2021, with early adoption permitted. Adoption of the standard requires using either a modified retrospective or a full retrospective approach. Effective January 1, 2021, we early adopted ASU 2020-06 using the modified retrospective approach. Adoption of the new standard resulted in a decrease to accumulated deficit of $95.0 million, a decrease to additional paid-in capital of $664.0 million, and an increase to convertible senior notes, net of $ 569.0 million. Interest expense recognized in the current and future periods will be reduced as a result of accounting for the convertible debt instrument as a single liability measured at its amortized cost. In January 2020, the FASB issued ASU 2020-01, Investments-Equity Securities (Topic 321), Investments-Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815), which clarifies the interaction between the accounting for equity securities in Topic 321, the accounting for equity method investments in Topic 323, and the accounting for certain forward contracts and purchased options in Topic 815. The guidance is effective for interim and annual periods beginning after December 15, 2020, with early adoption permitted. Effective January 1, 2021, we adopted this standard on a prospective basis. The impact of adoption of this standard on our consolidated financial statements, including accounting policies, processes, and systems, was not material.

Revenue

Revenue	9 Months Ended
	Sep. 30, 2021
Revenue From Contract With Customer [Abstract]
Revenue	2. Revenue We determine revenue recognition by first identifying the contract or contracts with a customer, identifying the performance obligations in the contract, determining the transaction price, allocating the transaction price to the performance obligations in the contract, and recognizing revenue when, or as, we satisfy a performance obligation. Revenue is recognized when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration we expect to receive in exchange for those goods or services. We determine collectability by performing ongoing credit evaluations and monitoring customer accounts receivable balances. Sales tax, including value added tax, is excluded from reported revenue. We generate substantially all of our revenues by offering various advertising products on Snapchat, which include Snap Ads and AR Ads, referred to as advertising revenue. AR Ads include Sponsored Filters and Sponsored Lenses. Sponsored Filters allow users to interact with an advertiser’s brand by enabling stylized brand artwork to be overlaid on a Snap. Sponsored Lenses allow users to interact with an advertiser’s brand by enabling branded augmented reality experiences. The substantial majority of advertising revenue is generated from the display of advertisements on Snapchat through contractual agreements that are either on a fixed fee basis over a period of time or based on the number of advertising impressions delivered. Revenue related to agreements based on the number of impressions delivered is recognized when the advertisement is displayed. Revenue related to fixed fee arrangements is recognized ratably over the service period, typically less than 30 days in duration, and such arrangements do not contain minimum impression guarantees. In arrangements where another party is involved in providing specified services to a customer, we evaluate whether we are the principal or agent. In this evaluation, we consider if we obtain control of the specified goods or services before they are transferred to the customer, as well as other indicators such as the party primarily responsible for fulfillment, inventory risk, and discretion in establishing price. For advertising revenue arrangements where we are not the principal, we recognize revenue on a net basis. For the periods presented, revenue for arrangements where we are the agent was not material. We also generate revenue from sales of hardware. For the periods presented, revenue from the sales of hardware was not material. The following table represents our revenue disaggregated by geography based on the billing address of the advertising customer: Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 (in thousands) Revenue: North America (1) (2) $ 772,797 $ 468,450 $ 1,960,644 $ 1,013,327 Europe (3) 160,257 107,116 456,420 269,681 Rest of world 134,417 103,102 402,099 312,296 Total revenue $ 1,067,471 $ 678,668 $ 2,819,163 $ 1,595,304 (1) North America includes Mexico, the Caribbean, and Central America. (2) United States revenue was $750.1 million and $455.9 million for the three months ended September 30, 2021 and 2020, respectively, and $1,901.7 million and $985.0 million for the nine months ended September 30, 2021 and 2020, respectively. (3) Europe includes Russia and Turkey.

Net Loss per Share

Net Loss per Share	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Net Loss per Share	3. Net Loss per Share We compute net loss per share using the two-class method required for multiple classes of common stock. We have three classes of authorized common stock for which voting rights differ by class. Basic net loss per share is computed by dividing net loss attributable to each class of stockholders by the weighted-average number of shares of stock outstanding during the period, adjusted for v ested restricted stock units (“RSUs”) that have not been settled and restricted stock awards (“RSAs”) for which the risk of forfeiture has not yet lapsed. For the calculation of diluted net loss per share, net loss per share attributable to common stockholders for basic net loss per share is adjusted by the effect of dilutive securities, including awards under our equity compensation plans. Diluted net loss per share attributable to common stockholders is computed by dividing the resulting net loss attributable to common stockholders by the weighted-average number of fully diluted common shares outstanding. We use the if-converted method for calculating any potential dilutive effect of the convertible senior notes due in 2025, 2026, and 2027 (collectively, the “Convertible Notes”) on diluted net loss per share. The Convertible Notes would have a dilutive impact on net income per share when the average market price of Class A common stock for a given period exceeds the respective conversion price of the Convertible Notes. For the periods presented, our potentially dilutive shares relating to stock options, RSUs, RSAs, and Convertible Notes were not included in the computation of diluted net loss per share as the effect of including these shares in the calculation would have been anti-dilutive. The numerators and denominators of the basic and diluted net loss per share computations for our common stock are calculated as follows for the three and nine months ended September 30, 2021 and 2020: Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 (in thousands, except per share data) Class A Common Class B Common Class C Common Class A Common Class B Common Class C Common Class A Common Class B Common Class C Common Class A Common Class B Common Class C Common Numerator: Net loss $ (60,340 ) $ (1,076 ) $ (10,543 ) $ (164,499 ) $ (3,234 ) $ (32,120 ) $ (426,077 ) $ (7,822 ) $ (76,606 ) $ (680,951 ) $ (13,867 ) $ (136,922 ) Net loss attributable to common stockholders $ (60,340 ) $ (1,076 ) $ (10,543 ) $ (164,499 ) $ (3,234 ) $ (32,120 ) $ (426,077 ) $ (7,822 ) $ (76,606 ) $ (680,951 ) $ (13,867 ) $ (136,922 ) Denominator: Basic shares: Weighted-average common shares - Basic 1,325,700 23,639 231,627 1,207,015 23,732 235,674 1,288,290 23,651 231,627 1,183,882 24,109 238,049 Diluted shares: Weighted-average common shares - Diluted 1,325,700 23,639 231,627 1,207,015 23,732 235,674 1,288,290 23,651 231,627 1,183,882 24,109 238,049 Net loss per share attributable to common stockholders: Basic $ (0.05 ) $ (0.05 ) $ (0.05 ) $ (0.14 ) $ (0.14 ) $ (0.14 ) $ (0.33 ) $ (0.33 ) $ (0.33 ) $ (0.58 ) $ (0.58 ) $ (0.58 ) Diluted $ (0.05 ) $ (0.05 ) $ (0.05 ) $ (0.14 ) $ (0.14 ) $ (0.14 ) $ (0.33 ) $ (0.33 ) $ (0.33 ) $ (0.58 ) $ (0.58 ) $ (0.58 ) The following potentially dilutive shares were excluded from the calculation of diluted net loss per share because their effect would have been anti-dilutive for the periods presented: Three and Nine Months Ended September 30, 2021 2020 (in thousands) Stock options 4,708 6,649 Unvested RSUs and RSAs 95,874 142,466 Convertible Notes (if-converted) 62,755 101,591

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stockholders' Equity	4. Stockholders’ Equity We maintain three share-based employee compensation plans: the 2017 Equity Incentive Plan (“2017 Plan”), the 2014 Equity Incentive Plan (“2014 Plan”), and the 2012 Equity Incentive Plan (“2012 Plan”, and collectively with the 2017 Plan and the 2014 Plan, the “Stock Plans”). In January 2017, our board of directors adopted the 2017 Plan, and in February 2017 our stockholders approved the 2017 Plan, effective on March 1, 2017, which serves as the successor to the 2014 Plan and 2012 Plan and provides for the grant of incentive stock options to employees, including employees of any parent or subsidiary, and for the grant of nonstatutory stock options, stock appreciation rights, RSAs, RSUs, performance stock awards, performance cash awards, and other forms of stock awards to employees, directors, and consultants, including employees and consultants of our affiliates. Restricted Stock Units and Restricted Stock Awards The following table summarizes the RSU and RSA activity during the nine months ended September 30, 2021: Class A Outstanding Weighted- Average Grant Date Fair Value (in thousands, except per share data) Unvested at December 31, 2020 131,172 $ 15.10 Granted 18,168 $ 59.13 Vested (45,486 ) $ 15.64 Forfeited (7,980 ) $ 15.04 Unvested at September 30, 2021 95,874 $ 23.19 All RSUs and RSAs granted after December 31, 2016 vest on the satisfaction of only a service-based condition (“Post-2017 Awards”). Total unrecognized compensation cost related to Post-2017 Awards was $2.0 billion as of September 30, 2021 and is expected to be recognized over a weighted-average period of 2.3 years. The service condition for Post-2017 Awards granted prior to February 2018 is generally satisfied over four years, 10% after the first year of service, 20% over the second year, 30% over the third year, and 40% over the fourth year. In limited instances, we have issued Post-2017 RSUs with vesting periods in excess of four years. Stock Options The following table summarizes the stock option award activity under the Stock Plans during the nine months ended September 30, 2021: Class A Number of Shares Class B Number of Shares Weighted- Average Exercise Price Weighted- Average Remaining Contractual Term (in years) Aggregate Intrinsic Value ( 1) (in thousands, except per share data) Outstanding at December 31, 2020 4,828 796 $ 10.37 5.20 $ 223,230 Granted 48 — $ 49.63 — $ — Exercised (891 ) (66 ) $ 12.30 — $ — Forfeited (7 ) — $ 13.53 — $ — Outstanding at September 30, 2021 3,978 730 $ 10.38 4.41 $ 298,934 (1) The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying stock option awards and the closing market price of our Class A common stock as of December 31, 2020 and September 30, 2021, respectively. Total unrecognized compensation cost related to unvested stock options was $4.9 million as of September 30, 2021 Stock-Based Compensation Expense by Function Total stock-based compensation expense by function was as follows: Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 (in thousands) Cost of revenue $ 9,132 $ 2,623 $ 14,635 $ 6,471 Research and development 198,893 132,003 537,177 377,836 Sales and marketing 51,675 27,393 118,250 79,306 General and administrative 41,198 30,061 124,509 86,687 Total $ 300,898 $ 192,080 $ 794,571 $ 550,300

Business Acquisitions

Business Acquisitions	9 Months Ended
	Sep. 30, 2021
Business Combinations [Abstract]
Business Acquisitions	5. Business Acquisitions 2021 Acquisitions Wave Optics In May 2021, we acquired Wave Optics Limited (“Wave Optics”), a display technology company that supplies light engines and diffractive waveguides for augmented reality displays. The total consideration was $541.8 million, of which $510.4 million represents purchase consideration and primarily consists of 4.7 million shares of our Class A common stock with a fair value of $252.0 million, cash of $13.7 million, and a $238.4 million payable due no later than May 2023 in either cash, shares of our Class A common stock, or a combination of cash and shares of our Class A common stock, at our election. The remaining $31.4 million of total consideration transferred represents compensation for future employment services. The operating results of Wave Optics were included in the results of our operations from the acquisition date and were not material to our consolidated revenue or consolidated operating loss. In addition, the unaudited pro forma results of operations assuming the Wave Optics acquisition had taken place at the beginning of each period are not provided as the historical operating results of Wave Optics were not material. The allocation of purchase price is subject to change based on information received related to the assets and liabilities that existed as of the acquisition date. The allocation of the total purchase consideration for this acquisition is estimated as follows: Total (in thousands) Trademarks $ 20,584 Technology 77,118 Customer relationships 32,708 Goodwill 370,236 Net deferred tax liability (3,313 ) Other assets acquired and liabilities assumed, net 13,111 Total $ 510,444 The goodwill amount represents synergies expected to be realized from the business combination and assembled workforce. The associated goodwill and intangible assets are not deductible for tax purposes. Fit Analytics In March 2021, we acquired Fit Analytics GmbH (“Fit Analytics”), a sizing technology company that powers solutions for retailers and brands, to grow our e-commerce and shopping offerings. The purchase consideration for Fit Analytics was $124.4 million, which primarily represents current and future cash consideration payments. The allocation of purchase price is subject to change based on information received related to the assets and liabilities that existed as of the acquisition date. Total (in thousands) Trademarks $ 800 Technology 17,000 Customer relationships 17,000 Goodwill 88,132 Net deferred tax liability (5,643 ) Other assets acquired and liabilities assumed, net 7,160 Total $ 124,449 The goodwill amount represents synergies expected to be realized from this business combination and assembled workforce. The associated goodwill and intangible assets are not deductible for tax purposes. Other Acquisitions In the nine months ended September 30, 2021, we completed other acquisitions to enhance our existing platform, technology, and workforce. The aggregate purchase consideration was $123.8 million, which included $54.4 million in cash, $56.6 million in shares of our Class A common stock, and $12.8 million recorded in other liabilities on the consolidated balance sheet. The aggregate allocation of purchase consideration was as follows: Total (in thousands) Technology $ 27,700 Customer relationships 4,000 Goodwill 96,292 Net deferred tax liability (7,273 ) Other assets acquired and liabilities assumed, net 3,079 Total $ 123,798 The goodwill amount represents synergies related to our existing platform expected to be realized from the business acquisitions and assembled workforces. Of the acquired goodwill and intangible assets, $1.0 million is deductible for tax purposes. 2020 Acquisitions For the year ended December 31, 2020, we completed acquisitions to enhance our existing platform, technology, and workforce. The aggregate allocation of acquisition date fair value was as follows: Total (in thousands) Technology 46,112 Goodwill 162,747 Net deferred tax liability (5,741 ) Other assets acquired and liabilities assumed, net 1,392 Total $ 204,510 The goodwill amount represents synergies related to our existing platform expected to be realized from the business acquisitions and assembled workforces. Of the acquired goodwill and intangible assets, $49.6 million was deductible for tax purposes.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
	Sep. 30, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	6. Goodwill and Intangible Assets The changes in the carrying amount of goodwill for the nine months ended September 30, 2021 were as follows: Goodwill (in thousands) Balance as of December 31, 2020 $ 939,259 Goodwill acquired 554,660 Foreign currency translation (9,811 ) Balance as of September 30, 2021 $ 1,484,108 Intangible assets consisted of the following: September 30, 2021 Weighted- Average Remaining Useful Life - Years Gross Carrying Amount Accumulated Amortization Net (in thousands, except years) Domain names 0.9 $ 414 $ 344 $ 70 Trademarks 4.6 21,384 1,517 19,867 Technology 3.7 307,987 127,150 180,837 Customer relationships 5.3 53,708 3,665 50,043 Patents 4.2 21,195 10,881 10,314 $ 404,688 $ 143,557 $ 261,131 December 31, 2020 Weighted- Average Remaining Useful Life - Years Gross Carrying Amount Accumulated Amortization Net (in thousands except years) Domain names 1.6 $ 414 $ 283 $ 131 Technology 3.2 206,197 111,129 95,068 Patents 4.9 19,860 9,130 10,730 $ 226,471 $ 120,542 $ 105,929 Amortization of intangible assets was $18.1 million and $8.4 million for the three months ended September 30, 2021 and 2020, respectively, and $43.0 million and $23.8 million for the nine months ended September 30, 2021 and 2020, respectively. As of September 30, 2021, the estimated intangible asset amortization expense for the next five years and thereafter is as follows: Estimated Amortization (in thousands) Remainder of 2021 $ 18,977 2022 70,174 2023 64,192 2024 52,542 2025 36,486 Thereafter 18,760 Total $ 261,131

Convertible Notes

Convertible Notes	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Convertible Notes	7. Convertible Notes 2027 Notes In April 2021, we entered into a purchase agreement with certain counterparties for the sale of an aggregate of $1.15 billion principal amount of convertible senior notes due in 2027 (the “2027 Notes”) in a private offering to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended (the “Securities Act”). The 2027 Notes consisted of a $1.0 billion initial placement and an over-allotment option that provided the initial purchasers of the 2027 Notes with the option to purchase an additional $150.0 million aggregate principal amount of the 2027 Notes, which was fully exercised. The 2027 Notes were issued pursuant to an indenture dated April 30, 2021. The net proceeds from the issuance of the 2027 Notes were $ 1.05 The debt issuance costs are amortized to interest expense using the effective interest rate method. The 2027 Notes are unsecured and unsubordinated obligations which do not bear regular interest and for which the principal balance will not accrete. The 2027 Notes will mature on May 1, 2027 unless repurchased, redeemed, or converted in accordance with their terms prior to such date. The 2027 Notes are convertible into cash, shares of our Class A common stock, or a combination of cash and shares of our Class A common stock, at our election, at an initial conversion rate of 11.2042 shares of Class A common stock per $1,000 principal amount of 2027 Notes, which is equivalent to an initial conversion price of approximately $89.25 per share of our Class A common stock. The conversion rate is subject to customary adjustments for certain events as described in the indenture governing the 2027 Notes. We may redeem for cash all or any portion of the 2027 Notes, at our option, on or after May 5, 2024 if the last reported sale price of our Class A common stock has been at least 130% of the conversion price then in effect for at least 20 trading days at a redemption price equal to 100% of the principal amount of the 2027 Notes to be redeemed, plus accrued and unpaid special interest or additional interest, if any. Holders of the 2027 Notes may convert all or a portion of their 2027 Notes at their option prior to February 1, 2027, in multiples of $1,000 principal amounts, only under the following circumstances: • • • at any time prior to the close of business on the scheduled trading day immediately preceding the redemption date, • On or after February 1, 2027, the 2027 Notes are convertible at any time until the close of business on the second scheduled trading day immediately preceding the maturity date. Holders of the 2027 Notes who convert the 2027 Notes in connection with a make-whole fundamental change, as defined in the indenture governing the 2027 Notes, or in connection with a redemption are entitled to an increase in the conversion rate. Additionally, in the event of a fundamental change, holders of the 2027 Notes may require us to repurchase all or a portion of the 2027 Notes at a price equal to 100% of the principal amount of 2027 Notes, plus any accrued and unpaid special interest, if any. We accounted for the issuance of the 2027 Notes as a single liability measured at its amortized cost, as no other embedded features require bifurcation and recognition as derivatives. 2025 Notes In April 2020, we entered into a purchase agreement for the sale of an aggregate of $1.0 billion principal amount of convertible senior notes due in 2025 (the “2025 Notes”) in a private offering to qualified institutional buyers pursuant to Rule 144A under the Securities Act. The net proceeds from the issuance of the 2025 Notes were $888.6 million, net of debt issuance costs and cash used to purchase the capped call transactions (the “2025 Capped Call Transactions”) discussed below. The debt issuance costs are amortized to interest expense using the effective interest rate method. The 2025 Notes are unsecured and unsubordinated obligations. Interest is payable in cash semi-annually in arrears beginning on November 1, 2020 at a rate of 0.25% per year. The 2025 Notes mature on May 1, 2025 unless repurchased, redeemed, or converted in accordance with their terms prior to such date. The 2025 Notes are convertible into cash, shares of our Class A common stock, or a combination of cash and shares of our Class A common stock, at our election, at an initial conversion rate of 46.1233 shares of Class A common stock per $1,000 principal amount of 2025 Notes, which is equivalent to an initial conversion price of approximately $21.68 per share of our Class A common stock. We may redeem for cash all or portions of the 2025 Notes, at our option, on or after May 6, 2023 based on certain circumstances. 2026 Notes In August 2019, we entered into a purchase agreement for the sale of an aggregate of $1.265 billion principal amount of convertible senior notes due in 2026 (the “2026 Notes”) in a private offering to qualified institutional buyers pursuant to Rule 144A under the Securities Act. The net proceeds from the issuance of the 2026 Notes were $1.15 billion, net of debt issuance costs and cash used to purchase the capped call transactions (the “2026 Capped Call Transactions”) discussed below. The debt issuance costs are amortized to interest expense using the effective interest rate method. The 2026 Notes are unsecured and unsubordinated obligations. Interest is payable in cash semi-annually in arrears beginning on February 1, 2020 at a rate of 0.75% per year. The 2026 Notes mature on August 1, 2026 unless repurchased, redeemed, or converted in accordance with the terms prior to such date. The 2026 Notes are convertible into cash, shares of our Class A common stock, or a combination of cash and shares of our Class A common stock, at our election, at an initial conversion rate of 43.8481 shares of Class A common stock per $1,000 principal amount of 2026 Notes, which is equivalent to an initial conversion price of approximately $22.81 per share of our Class A common stock. We may redeem for cash all or portions of the 2026 Notes, at our option, on or after August 6, 2023 based on certain circumstances. The Convertible Notes consisted of the following: As of September 30, 2021 2027 Notes 2025 Notes 2026 Notes (in thousands) Principal $ 1,150,000 $ 284,105 $ 838,495 Unamortized debt issuance costs (11,891 ) (2,329 ) (6,301 ) Net carrying amount $ 1,138,109 $ 281,776 $ 832,194 Prior to January 1, 2021, we separated the 2025 Notes and the 2026 Notes into liability and equity components. On issuance, the carrying amount of the equity components was recorded as a debt discount and subsequently amortized to interest expense. Effective January 1, 2021, we early adopted ASU 2020-06 using the modified retrospective approach. As a result, the 2025 Notes and 2026 Notes are each accounted for as a single liability measured at its amortized cost, as no other embedded features require bifurcation and recognition as derivatives. Adoption of the new standard resulted in a decrease to accumulated deficit of $95.0 million, a decrease to additional paid-in capital of $664.0 million, and an increase to convertible senior notes, net of $569.0 million. The 2027 Notes were issued after January 1, 2021. As of September 30, 2021, the debt issuance costs on the 2027 Notes, the 2025 Notes, and the 2026 Notes will be amortized over the remaining period of approximately 5.6 years, 3.6 years, and 4.8 years, respectively. Interest expense related to the amortization of debt issuance costs was $1.1 million and $3.3 million for the three and nine months ended September 30, 2021, respectively. Interest expense related to the amortization of debt discount and issuance costs was $24.5 million and $56.5 million for the three and nine months ended September 30, 2020, respectively. Contractual interest expense was $1.9 million and $7.2 million for the three and nine months ended September 30, 2021, respectively, and $3.0 million and $8.2 million for the three and nine months ended September 30, 2020, respectively. As of September 30, 2021, the if-converted value of the 2025 Notes and the 2026 Notes exceeded the principal amount by $683.9 million and $1.9 billion, respectively. As of September 30, 2021, the if-converted value of the 2027 Notes did not exceed the principal amount. The sale price for conversion was satisfied as of September 30, 2021 for the 2025 Notes and the 2026 Notes, and as a result, the 2025 Notes and 2026 Notes will continue to be eligible for optional conversion during the fourth quarter of 2021. The 2027 Notes were not eligible for conversion as of September 30, 2021. No sinking fund is provided for the Convertible Notes, which means that we are not required to redeem or retire them periodically. Refer to our audited consolidated financial statements and Note 7 in the Annual Report for additional details. Capped Call Transactions In connection with the pricing of the 2027 Notes, 2025 Notes, and 2026 Notes, we entered into the 2027 Capped Call Transactions, the 2025 Capped Call Transactions, and the 2026 Capped Call Transactions (collectively, the “Capped Call Transactions”), respectively, with certain counterparties at a net cost of $86.8 million, $100.0 million, and $102.1 million, respectively. The cap price of the 2027 Capped Call Transactions, the 2025 Capped Call Transactions, and the 2026 Capped Call Transactions is initially $121.02, $32.12, and $32.58 per share of our Class A common stock, respectively. All are subject to certain adjustments under the terms of the Capped Call Transactions. Conditions that cause adjustments to the initial strike price of the Capped Call Transactions mirror conditions that result in corresponding adjustments for the Convertible Notes. The Capped Call Transactions are intended to reduce potential dilution to holders of our Class A common stock beyond the conversion prices up to the cap prices on any conversion of the Convertible Notes or offset any cash payments we are required to make in excess of the principal amount, as the case may be, with such reduction or offset subject to a cap. The cost of the Capped Call Transactions was recorded as a reduction of our additional paid-in capital in our consolidated balance sheets. The Capped Call Transactions will not be remeasured as long as they continue to meet the conditions for equity classification. As of September 30, 2021, the 2025 Capped Call Transactions and 2026 Capped Call Transactions were in-the-money. Exchange Transactions In 2021, we entered into various exchange agreements (collectively, the “Exchange Agreements”) with certain holders of the 2025 Notes and the 2026 Notes pursuant to which we exchanged approximately $715.9 million principal amount of the 2025 Notes and approximately $426.5 million principal amount of the 2026 Notes for aggregate consideration of approximately 52.4 million shares of Class A common stock (the “Exchange Shares”). The Exchange Shares included an additional 0.7 million shares of our Class A common stock not provided for under the original conversion terms of the 2025 Notes and the 2026 Notes to induce the holders to agree to the exchange. The Exchange Agreements were accounted for as an induced conversion with the fair value of 0.7 million Exchange Shares, less accrued interest, recognized as an inducement expense in other income (expense), net in our consolidated statements of operations and included as an adjustment to reconcile net loss to net cash provided by (used in) operating activities in our consolidated statements of cash flows. Inducement expense recorded for the three and nine months ended September 30, 2021 was $4.5 million and $41.5 million, respectively. The common stock consideration issued under the original terms of the 2025 Notes and 2026 Notes was accounted for under the general conversion accounting guidance with the net carrying amount of $1,132.6 million recorded in additional paid-in-capital and as a non-cash transaction excluded from cash activities on the consolidated statements of cash flows.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2021
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	8. Commitments and Contingencies Commitments We have non-cancelable contractual agreements related to the hosting of our data processing, storage, and other computing services. In January 2017, we entered into the Google Cloud Platform License Agreement. Under the agreement, we were granted a license to access and use certain cloud services. The agreement has an initial term of five years and we are required to purchase at least $400.0 million of cloud services in each year of the agreement. For each of the first four years, up to 15% of this amount may be moved to a subsequent year. If we fail to meet the minimum purchase commitment during any year, we are required to pay the difference. In March 2016, we entered into the AWS Enterprise Agreement for the use of cloud services from Amazon Web Services, Inc. (“AWS”). Under the agreement, as amended, we are committed to spend an aggregate of $1.1 billion between January 2017 and December 2022 on AWS services ($90.0 million in 2018, $150.0 million in 2019, $215.0 million in 2020, $280.0 million in 2021, and $349.0 million in 2022). If we fail to meet the minimum purchase commitment during any year, we are required to pay the difference. Any such payment may be applied to future use of AWS services during the term, although it will not count towards meeting the future minimum purchase commitments. The future minimum contractual commitment including commitments less than one year, as of September 30, 2021, for each of the next five years are as follows: Minimum Commitment (in thousands) Remainder of 2021 $ 198,366 2022 390,379 2023 12,920 2024 3,013 2025 57 Thereafter 2 Total minimum commitments $ 604,737 Contingencies We record a loss contingency when it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated. We also disclose material contingencies when we believe a loss is not probable but reasonably possible. Accounting for contingencies requires us to use judgment related to both the likelihood of a loss and the estimate of the amount or range of loss. Many legal and tax contingencies can take years to be resolved. Pending Matters Beginning in May 2017, we, certain of our officers and directors, and the underwriters for our IPO were named as defendants in securities class actions purportedly brought on behalf of purchasers of our Class A common stock, alleging violation of securities laws that arose following our IPO. On January 17, 2020, we reached a preliminary agreement to settle the securities class actions. The preliminary settlement agreement was signed in January 2020 and provided for a resolution of all of the pending claims in the securities class actions for $187.5 million. In the fourth quarter of 2019, we recorded legal expense, net of amounts directly covered by insurance, of $100.0 million for the expected settlement of the stockholder actions since we concluded the loss was probable and estimable. The amount was recorded in general and administrative expense in our consolidated statements of operations. The settlement amount was paid into escrow in December 2020. In March 2021, the federal court granted final approval of the settlement and entered judgment while the state court granted final approval of the settlement in March 2021 and entered judgment in April 2021. The settlement amount is being released from escrow as determined by the plaintiffs’ lawyers and the settlement administrator. The outcomes of our legal proceedings are inherently unpredictable, subject to significant uncertainties, and could be material to our financial condition, results of operations, and cash flows for a particular period. For any pending matters, it is not possible to estimate the reasonably possible loss or range of loss. We are subject to various other legal proceedings and claims in the ordinary course of business, including certain patent, trademark, privacy, regulatory, and employment matters. Although occasional adverse decisions or settlements may occur, we do not believe that the final disposition of any of our other pending matters will seriously harm our business, financial condition, results of operations, and cash flows. 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. We have not incurred material costs to defend lawsuits or settle claims related to these indemnifications as of September 30, 2021. We believe the fair value of these liabilities is immaterial and accordingly have no liabilities recorded for these agreements at September 30, 2021.

Leases

Leases	9 Months Ended
	Sep. 30, 2021
Leases [Abstract]
Leases	9. Leases We have various non-cancelable lease agreements for certain of our offices with original lease periods expiring between 2021 and 2042. Our lease terms may include options to extend or terminate the lease when it is reasonably certain we will exercise that option. Certain of the arrangements have free rent periods or escalating rent payment provisions. Leases with an initial term of twelve months or less are not recorded on the consolidated balance sheets. We recognize rent expense on a straight-line basis over the lease term. Additionally, we sublease certain operating leases to third parties primarily as a result of moving to a centralized corporate office in Santa Monica, California in 2018. Lease Cost The components of lease cost were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 (in thousands) Operating lease expense $ 17,795 $ 15,335 $ 49,883 $ 45,074 Sublease income (682 ) (755 ) (2,010 ) (2,290 ) Total net lease costs $ 17,113 $ 14,580 $ 47,873 $ 42,784 Lease Term and Discount Rate The weighted-average remaining lease term (in years) and discount rate related to the operating leases were as follows: Nine Months Ended September 30, 2021 2020 Weighted-average remaining lease term 6.9 7.5 Weighted-average discount rate 5.2 % 5.6 % As most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at the lease commencement date to determine the present value of lease payments. Maturity of Lease Liabilities The present value of our operating lease liabilities as of September 30, 2021 were as follows: Operating Leases (in thousands) Remainder of 2021 $ 13,571 2022 76,751 2023 71,471 2024 70,224 2025 64,877 Thereafter 119,417 Total lease payments $ 416,311 Less: Imputed interest (67,614 ) Present value of lease liabilities $ 348,697 As of September 30, 2021, we have additional operating leases for facilities that have not yet commenced with lease obligations of $43.6 million. These operating leases will commence between 2021 and 2022 with lease terms of greater than one year to five years. This table does not include lease payments that were not fixed at commencement or modification. Other Information Cash payments included in the measurement of our o perating lease liabilities were $19.1 million and $18.3 million for the three months ended September 30, 2021 and 2020, respectively, and $54.1 million and $56.6 million for the nine months ended September 30, 2021 and 2020, respectively. Lease liabilities arising from obtaining operating lease right-of-use assets were $8.4 million and $56.1 million for the three and nine months ended September 30, 2021, respectively. Lease liabilities arising from obtaining operating lease right-of-use assets were $24.0 million for the nine months ended September 30, 2020 and were not material for the three months ended September 30, 2020

Strategic Investments

Strategic Investments	9 Months Ended
	Sep. 30, 2021
Equity Method Investments And Joint Ventures [Abstract]
Strategic Investments	10. Strategic Investments We hold strategic investments in privately held and publicly traded companies, consisting primarily of equity securities. Our investments in privately held companies had a carrying value of $249.8 million and $169.5 million as of September 30, 2021 and December 31, 2020, respectively. These strategic investments are primarily recorded at fair value on a non-recurring basis. The estimation of fair value for these privately held strategic investments requires the use of significant unobservable inputs, such as the issuance of new equity by the company, and as a result, we deem these assets as Level 3 financial instruments within the fair value measurement framework. We recognized unrealized gains on privately held companies of $60.6 million and $136.0 million for the three and nine months ended September 30, 2021 respectively, and $27.8 million of realized gains for the nine months ended September 30, 2021. The unrealized and realized gains on privately held company investments for the three and nine months ended September 30, 2020 were not material. During the three months ended September 30, 2021, we reclassified a strategic investment from Level 3 to Level 1 using the beginning-of-period approach, following the commencement of public market trading of the investment during the period. The carrying value of this publicly traded company was $133.8 million as of September 30, 2021. We recognized unrealized gains on this investment of $62.6 million for the three months ended September 30, 2021. Unrealized gains on all strategic investments are included within other income (expense), net on the consolidated statements of operations and included as an adjustment to reconcile net loss to net cash provided by (used in) operating activities in our consolidated statements of cash flows. Strategic investments are included within other assets on the consolidated balance sheets. All strategic investments are reviewed periodically for impairment. Impairment expense recorded for the nine months ended September 30, 2020 was $15.5 million. Impairment expense recorded in all other periods presented was not material.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurements	11. Fair Value Measurements Assets and liabilities measured at fair value are classified into the following categories: • Level 1: Quoted market prices in active markets for identical assets or liabilities. • Level 2: Observable market-based inputs or unobservable inputs that are corroborated by market data. • Level 3: Unobservable inputs reflecting the reporting entity’s own assumptions or external inputs from inactive markets. We classify our cash equivalents and marketable securities within Level 1 or Level 2 because we use quoted market prices or alternative pricing sources and models utilizing market observable inputs to determine their fair value. The following tables set forth our financial assets as of September 30, 2021 and December 31, 2020 that are measured at fair value on a recurring basis during the period: September 30, 2021 Cost or Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Total Estimated Fair Value (in thousands) Cash $ 1,906,445 $ — $ — $ 1,906,445 Level 1 securities: U.S. government securities 767,710 45 (45 ) 767,710 U.S. government agency securities 135,445 1 (10 ) 135,436 Publicly traded equity securities (1) 71,139 62,644 — 133,783 Level 2 securities: Corporate debt securities 113,900 2 (44 ) 113,858 Commercial paper 471,936 — — 471,936 Certificates of deposit 86,436 — — 86,436 Total $ 3,553,011 $ 62,692 $ (99 ) $ 3,615,604 (1) During the three months ended September 30, 2021, we reclassified a strategic investment from Level 3 to Level 1 at its fair value using the beginning-of-period approach, following the commencement of public market trading of the investment during the period (which is subject to short-term lock-up restrictions). For additional discussion, see Note 10 to our consolidated financial statements included December 31, 2020 Cost or Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Total Estimated Fair Value (in thousands) Cash $ 464,006 $ — $ — $ 464,006 Level 1 securities: U.S. government securities 1,272,125 122 (21 ) 1,272,226 U.S. government agency securities 245,055 8 (24 ) 245,039 Level 2 securities: Corporate debt securities 81,158 1 (18 ) 81,141 Commercial paper 425,861 — — 425,861 Certificates of deposit 49,267 — — 49,267 Total $ 2,537,472 $ 131 $ (63 ) $ 2,537,540 Gross unrealized losses were not material for the three and nine months ended September 30, 2021 and 2020, respectively. As of September 30, 2021, we considered any decreases in fair value on our marketable securities to be driven by factors other than credit risk, including market risk. As of September 30, 2021, $291.5 million of our total $1.5 billion in marketable securities have contractual maturities between one and five years. All other marketable securities have contractual maturities less than one year. W e carry the Convertible Notes at face value less the unamortized debt issuance costs on our consolidated balance sheets and present that fair value for disclosure purposes only. As of September 30, 2021, the fair value of the 2027 Notes, the 2025 Notes, and the 2026 Notes was $1.3 billion, $968.9 million, and $2.7 billion, respectively. The estimated fair value of the Convertible Notes, which are classified as Level 2 financial instruments, was determined based on the estimated or actual bid prices of the Convertible Notes in an over-the-counter market on the last business day of the period.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	12. Income Taxes Our tax provision for interim periods is determined using an estimate of our annual effective tax rate, adjusted for discrete items arising in that quarter. Our effective tax rate differs from the U.S. statutory tax rate primarily due to valuation allowances on our deferred tax assets as it is more likely than not that some or all of our deferred tax assets will not be realized. Income tax expense was $1.0 million and $0.6 million for the three and nine months ended September 30, 2021, respectively, compared to an income tax expense of $0.9 million and $0.5 million for the three and nine months ended September 30, 2020, respectively.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	9 Months Ended
	Sep. 30, 2021
Accumulated Other Comprehensive Income Loss [Abstract]
Accumulated Other Comprehensive Income (Loss)	13. Accumulated Other Comprehensive Income (Loss) The table below presents the changes in accumulated other comprehensive income (loss) (“AOCI”) by component and the reclassifications out of AOCI: Changes in Accumulated Other Comprehensive Income (Loss) by Component Marketable Securities Foreign Currency Translation Total (in thousands) Balance at December 31, 2020 $ (87 ) $ 21,450 $ 21,363 OCI before reclassifications (48 ) (11,465 ) (11,513 ) Amounts reclassified from AOCI (1) (71 ) — (71 ) Net current period OCI (119 ) (11,465 ) (11,584 ) Balance at September 30, 2021 $ (206 ) $ 9,985 $ 9,779 (1) Realized gains and losses on marketable securities are reclassified from AOCI into other income (expense), net in the consolidated statements of operations.

Property and Equipment, Net

Property and Equipment, Net	9 Months Ended
	Sep. 30, 2021
Property Plant And Equipment [Abstract]
Property and Equipment, Net	14. Property and Equipment, Net The following table lists property and equipment, net by geographic area: As of September 30, 2021 As of December 31, 2020 (in thousands) Property and equipment, net: United States $ 165,346 $ 157,596 Rest of world (1) 24,600 21,113 Total property and equipment, net $ 189,946 $ 178,709 (1) No individual country exceeded 10% of our total property and equipment, net for any period presented.

Description of Business and S_2

Description of Business and Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited consolidated financial statements are prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information. Our consolidated financial statements include the accounts of Snap Inc. and our wholly owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. Our fiscal year ends on December 31. These unaudited interim consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2020, as filed with the SEC in February 2021 (the “Annual Report”). In our opinion, the unaudited interim consolidated financial statements include all adjustments of a normal recurring nature necessary for the fair presentation of our financial position, results of operations, and cash flows. Certain reclassifications have been made in the prior periods to conform to the current year's presentation. None of these reclassifications had a material impact on our consolidated financial statements. The results of operations for the three and nine months ended September 30, 2021 are not necessarily indicative of the results to be expected for the year ending December 31, 2021. Other than described below, there have been no changes to our significant accounting policies described in our Annual Report that have had a material impact on our consolidated financial statements and related notes.
Use of Estimates	Use of Estimates The preparation of our consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts in the consolidated financial statements. Management’s estimates are based on historical information available as of the date of the consolidated financial statements and various other assumptions that we believe are reasonable under the circumstances. Actual results could differ from those estimates. Key estimates relate primarily to determining the fair value of assets and liabilities assumed in business combinations, evaluation of contingencies, uncertain tax positions, lease exit charges, forfeiture rate, the fair value of convertible senior notes, the fair value of stock-based awards, and the fair value of strategic investments. On an ongoing basis, management evaluates our estimates compared to historical experience and trends, which form the basis for making judgments about the carrying value of assets and liabilities .
Recent Accounting Pronouncements	Recent Accounting Pronouncements In August 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2020-06, Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity. Under ASU 2020-06, the embedded conversion features are no longer separated from the host contract for convertible instruments with conversion features that are not required to be accounted for as derivatives under Topic 815, or that do not result in substantial premiums accounted for as paid-in capital. Consequently, a convertible debt instrument will be accounted for as a single liability measured at its amortized cost, as long as no other features require bifurcation and recognition as derivatives. The new guidance also requires the if-converted method to be applied for all convertible instruments. ASU 2020-06 is effective for fiscal years beginning after December 15, 2021, with early adoption permitted. Adoption of the standard requires using either a modified retrospective or a full retrospective approach. Effective January 1, 2021, we early adopted ASU 2020-06 using the modified retrospective approach. Adoption of the new standard resulted in a decrease to accumulated deficit of $95.0 million, a decrease to additional paid-in capital of $664.0 million, and an increase to convertible senior notes, net of $ 569.0 million. Interest expense recognized in the current and future periods will be reduced as a result of accounting for the convertible debt instrument as a single liability measured at its amortized cost. In January 2020, the FASB issued ASU 2020-01, Investments-Equity Securities (Topic 321), Investments-Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815), which clarifies the interaction between the accounting for equity securities in Topic 321, the accounting for equity method investments in Topic 323, and the accounting for certain forward contracts and purchased options in Topic 815. The guidance is effective for interim and annual periods beginning after December 15, 2020, with early adoption permitted. Effective January 1, 2021, we adopted this standard on a prospective basis. The impact of adoption of this standard on our consolidated financial statements, including accounting policies, processes, and systems, was not material.

Revenue (Tables)

Revenue (Tables)	9 Months Ended
	Sep. 30, 2021
Revenue From Contract With Customer [Abstract]
Disaggregation of Revenue by Geography	The following table represents our revenue disaggregated by geography based on the billing address of the advertising customer: Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 (in thousands) Revenue: North America (1) (2) $ 772,797 $ 468,450 $ 1,960,644 $ 1,013,327 Europe (3) 160,257 107,116 456,420 269,681 Rest of world 134,417 103,102 402,099 312,296 Total revenue $ 1,067,471 $ 678,668 $ 2,819,163 $ 1,595,304 (1) North America includes Mexico, the Caribbean, and Central America. (2) United States revenue was $750.1 million and $455.9 million for the three months ended September 30, 2021 and 2020, respectively, and $1,901.7 million and $985.0 million for the nine months ended September 30, 2021 and 2020, respectively. (3) Europe includes Russia and Turkey.

Net Loss per Share (Tables)

Net Loss per Share (Tables)	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Numerators and Denominators of Basic and Diluted Net Loss per Share Computations for Common Stock	The numerators and denominators of the basic and diluted net loss per share computations for our common stock are calculated as follows for the three and nine months ended September 30, 2021 and 2020: Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 (in thousands, except per share data) Class A Common Class B Common Class C Common Class A Common Class B Common Class C Common Class A Common Class B Common Class C Common Class A Common Class B Common Class C Common Numerator: Net loss $ (60,340 ) $ (1,076 ) $ (10,543 ) $ (164,499 ) $ (3,234 ) $ (32,120 ) $ (426,077 ) $ (7,822 ) $ (76,606 ) $ (680,951 ) $ (13,867 ) $ (136,922 ) Net loss attributable to common stockholders $ (60,340 ) $ (1,076 ) $ (10,543 ) $ (164,499 ) $ (3,234 ) $ (32,120 ) $ (426,077 ) $ (7,822 ) $ (76,606 ) $ (680,951 ) $ (13,867 ) $ (136,922 ) Denominator: Basic shares: Weighted-average common shares - Basic 1,325,700 23,639 231,627 1,207,015 23,732 235,674 1,288,290 23,651 231,627 1,183,882 24,109 238,049 Diluted shares: Weighted-average common shares - Diluted 1,325,700 23,639 231,627 1,207,015 23,732 235,674 1,288,290 23,651 231,627 1,183,882 24,109 238,049 Net loss per share attributable to common stockholders: Basic $ (0.05 ) $ (0.05 ) $ (0.05 ) $ (0.14 ) $ (0.14 ) $ (0.14 ) $ (0.33 ) $ (0.33 ) $ (0.33 ) $ (0.58 ) $ (0.58 ) $ (0.58 ) Diluted $ (0.05 ) $ (0.05 ) $ (0.05 ) $ (0.14 ) $ (0.14 ) $ (0.14 ) $ (0.33 ) $ (0.33 ) $ (0.33 ) $ (0.58 ) $ (0.58 ) $ (0.58 )
Schedule of Potentially Dilutive Shares Excluded from Calculation of Diluted Net Loss per Share	The following potentially dilutive shares were excluded from the calculation of diluted net loss per share because their effect would have been anti-dilutive for the periods presented: Three and Nine Months Ended September 30, 2021 2020 (in thousands) Stock options 4,708 6,649 Unvested RSUs and RSAs 95,874 142,466 Convertible Notes (if-converted) 62,755 101,591

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2021
Summary of Stock Option Award Activity	The following table summarizes the stock option award activity under the Stock Plans during the nine months ended September 30, 2021: Class A Number of Shares Class B Number of Shares Weighted- Average Exercise Price Weighted- Average Remaining Contractual Term (in years) Aggregate Intrinsic Value ( 1) (in thousands, except per share data) Outstanding at December 31, 2020 4,828 796 $ 10.37 5.20 $ 223,230 Granted 48 — $ 49.63 — $ — Exercised (891 ) (66 ) $ 12.30 — $ — Forfeited (7 ) — $ 13.53 — $ — Outstanding at September 30, 2021 3,978 730 $ 10.38 4.41 $ 298,934 (1) The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying stock option awards and the closing market price of our Class A common stock as of December 31, 2020 and September 30, 2021, respectively.
Summary of Total Stock-based Compensation Expense	Total stock-based compensation expense by function was as follows: Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 (in thousands) Cost of revenue $ 9,132 $ 2,623 $ 14,635 $ 6,471 Research and development 198,893 132,003 537,177 377,836 Sales and marketing 51,675 27,393 118,250 79,306 General and administrative 41,198 30,061 124,509 86,687 Total $ 300,898 $ 192,080 $ 794,571 $ 550,300
Restricted Stock Units and Restricted Stock Awards
Summary of RSU and RSA Activity	Restricted Stock Units and Restricted Stock Awards The following table summarizes the RSU and RSA activity during the nine months ended September 30, 2021: Class A Outstanding Weighted- Average Grant Date Fair Value (in thousands, except per share data) Unvested at December 31, 2020 131,172 $ 15.10 Granted 18,168 $ 59.13 Vested (45,486 ) $ 15.64 Forfeited (7,980 ) $ 15.04 Unvested at September 30, 2021 95,874 $ 23.19

Business Acquisitions (Tables)

Business Acquisitions (Tables)	9 Months Ended
	Sep. 30, 2021
Wave Optics
Business Acquisition [Line Items]
Summary of Total Purchase Consideration Allocation	The allocation of purchase price is subject to change based on information received related to the assets and liabilities that existed as of the acquisition date. The allocation of the total purchase consideration for this acquisition is estimated as follows: Total (in thousands) Trademarks $ 20,584 Technology 77,118 Customer relationships 32,708 Goodwill 370,236 Net deferred tax liability (3,313 ) Other assets acquired and liabilities assumed, net 13,111 Total $ 510,444
Fit Analytics
Business Acquisition [Line Items]
Summary of Total Purchase Consideration Allocation	The allocation of purchase price is subject to change based on information received related to the assets and liabilities that existed as of the acquisition date. Total (in thousands) Trademarks $ 800 Technology 17,000 Customer relationships 17,000 Goodwill 88,132 Net deferred tax liability (5,643 ) Other assets acquired and liabilities assumed, net 7,160 Total $ 124,449
Other Acquisitions
Business Acquisition [Line Items]
Summary of Total Purchase Consideration Allocation	The aggregate allocation of purchase consideration was as follows: Total (in thousands) Technology $ 27,700 Customer relationships 4,000 Goodwill 96,292 Net deferred tax liability (7,273 ) Other assets acquired and liabilities assumed, net 3,079 Total $ 123,798
2020 Acquisitions
Business Acquisition [Line Items]
Summary of Total Purchase Consideration Allocation	The aggregate allocation of acquisition date fair value was as follows: Total (in thousands) Technology 46,112 Goodwill 162,747 Net deferred tax liability (5,741 ) Other assets acquired and liabilities assumed, net 1,392 Total $ 204,510

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Changes in Carrying Amount of Goodwill	The changes in the carrying amount of goodwill for the nine months ended September 30, 2021 were as follows: Goodwill (in thousands) Balance as of December 31, 2020 $ 939,259 Goodwill acquired 554,660 Foreign currency translation (9,811 ) Balance as of September 30, 2021 $ 1,484,108
Schedule of Intangible Assets	Intangible assets consisted of the following: September 30, 2021 Weighted- Average Remaining Useful Life - Years Gross Carrying Amount Accumulated Amortization Net (in thousands, except years) Domain names 0.9 $ 414 $ 344 $ 70 Trademarks 4.6 21,384 1,517 19,867 Technology 3.7 307,987 127,150 180,837 Customer relationships 5.3 53,708 3,665 50,043 Patents 4.2 21,195 10,881 10,314 $ 404,688 $ 143,557 $ 261,131 December 31, 2020 Weighted- Average Remaining Useful Life - Years Gross Carrying Amount Accumulated Amortization Net (in thousands except years) Domain names 1.6 $ 414 $ 283 $ 131 Technology 3.2 206,197 111,129 95,068 Patents 4.9 19,860 9,130 10,730 $ 226,471 $ 120,542 $ 105,929
Schedule of Estimated Intangible Asset Amortization Expense	As of September 30, 2021, the estimated intangible asset amortization expense for the next five years and thereafter is as follows: Estimated Amortization (in thousands) Remainder of 2021 $ 18,977 2022 70,174 2023 64,192 2024 52,542 2025 36,486 Thereafter 18,760 Total $ 261,131

Convertible Notes (Tables)

Convertible Notes (Tables)	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Summary of Convertible Notes	The Convertible Notes consisted of the following: As of September 30, 2021 2027 Notes 2025 Notes 2026 Notes (in thousands) Principal $ 1,150,000 $ 284,105 $ 838,495 Unamortized debt issuance costs (11,891 ) (2,329 ) (6,301 ) Net carrying amount $ 1,138,109 $ 281,776 $ 832,194

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2021
Commitments And Contingencies Disclosure [Abstract]
Schedule of Future Minimum Contractual Commitments	The future minimum contractual commitment including commitments less than one year, as of September 30, 2021, for each of the next five years are as follows: Minimum Commitment (in thousands) Remainder of 2021 $ 198,366 2022 390,379 2023 12,920 2024 3,013 2025 57 Thereafter 2 Total minimum commitments $ 604,737

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2021
Leases [Abstract]
Components of Lease Cost	The components of lease cost were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 (in thousands) Operating lease expense $ 17,795 $ 15,335 $ 49,883 $ 45,074 Sublease income (682 ) (755 ) (2,010 ) (2,290 ) Total net lease costs $ 17,113 $ 14,580 $ 47,873 $ 42,784
Summary of Weighted Average Remaining Lease Term and Discount Rate Related to Operating Leases	Lease Term and Discount Rate The weighted-average remaining lease term (in years) and discount rate related to the operating leases were as follows: Nine Months Ended September 30, 2021 2020 Weighted-average remaining lease term 6.9 7.5 Weighted-average discount rate 5.2 % 5.6 %
Present Value of Operating Lease Liabilities	Maturity of Lease Liabilities The present value of our operating lease liabilities as of September 30, 2021 were as follows: Operating Leases (in thousands) Remainder of 2021 $ 13,571 2022 76,751 2023 71,471 2024 70,224 2025 64,877 Thereafter 119,417 Total lease payments $ 416,311 Less: Imputed interest (67,614 ) Present value of lease liabilities $ 348,697

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Summary of Financial Assets Measured at Fair Value on Recurring Basis	The following tables set forth our financial assets as of September 30, 2021 and December 31, 2020 that are measured at fair value on a recurring basis during the period: September 30, 2021 Cost or Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Total Estimated Fair Value (in thousands) Cash $ 1,906,445 $ — $ — $ 1,906,445 Level 1 securities: U.S. government securities 767,710 45 (45 ) 767,710 U.S. government agency securities 135,445 1 (10 ) 135,436 Publicly traded equity securities (1) 71,139 62,644 — 133,783 Level 2 securities: Corporate debt securities 113,900 2 (44 ) 113,858 Commercial paper 471,936 — — 471,936 Certificates of deposit 86,436 — — 86,436 Total $ 3,553,011 $ 62,692 $ (99 ) $ 3,615,604 (1) During the three months ended September 30, 2021, we reclassified a strategic investment from Level 3 to Level 1 at its fair value using the beginning-of-period approach, following the commencement of public market trading of the investment during the period (which is subject to short-term lock-up restrictions). For additional discussion, see Note 10 to our consolidated financial statements included December 31, 2020 Cost or Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Total Estimated Fair Value (in thousands) Cash $ 464,006 $ — $ — $ 464,006 Level 1 securities: U.S. government securities 1,272,125 122 (21 ) 1,272,226 U.S. government agency securities 245,055 8 (24 ) 245,039 Level 2 securities: Corporate debt securities 81,158 1 (18 ) 81,141 Commercial paper 425,861 — — 425,861 Certificates of deposit 49,267 — — 49,267 Total $ 2,537,472 $ 131 $ (63 ) $ 2,537,540

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	9 Months Ended
	Sep. 30, 2021
Accumulated Other Comprehensive Income Loss [Abstract]
Schedule of Changes in Accumulated Other Comprehensive Income (Loss)	The table below presents the changes in accumulated other comprehensive income (loss) (“AOCI”) by component and the reclassifications out of AOCI: Changes in Accumulated Other Comprehensive Income (Loss) by Component Marketable Securities Foreign Currency Translation Total (in thousands) Balance at December 31, 2020 $ (87 ) $ 21,450 $ 21,363 OCI before reclassifications (48 ) (11,465 ) (11,513 ) Amounts reclassified from AOCI (1) (71 ) — (71 ) Net current period OCI (119 ) (11,465 ) (11,584 ) Balance at September 30, 2021 $ (206 ) $ 9,985 $ 9,779 (1) Realized gains and losses on marketable securities are reclassified from AOCI into other income (expense), net in the consolidated statements of operations.

Property and Equipment, Net (Ta

Property and Equipment, Net (Tables)	9 Months Ended
	Sep. 30, 2021
Property Plant And Equipment [Abstract]
Property and Equipment, Net by Geographic Area	The following table lists property and equipment, net by geographic area: As of September 30, 2021 As of December 31, 2020 (in thousands) Property and equipment, net: United States $ 165,346 $ 157,596 Rest of world (1) 24,600 21,113 Total property and equipment, net $ 189,946 $ 178,709 (1) No individual country exceeded 10% of our total property and equipment, net for any period presented.

Description of Business and S_3

Description of Business and Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Jan. 01, 2021	Dec. 31, 2020
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Accumulated deficit	$ (8,307,016)		$ (7,891,542)
Additional paid-in capital	11,737,338		10,200,141
Convertible senior notes, net	$ 2,252,079		$ 1,675,169
Cumulative Effect, Period of Adoption, Adjustment
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Accumulated deficit		$ (95,000)
Additional paid-in capital		(664,000)
Convertible senior notes, net		$ 569,000
Accounting Standards Update 2020-06
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adoption date	Jan. 1, 2021
Change in accounting principle, accounting standards update, early adoption [true false]	true
Change in accounting principle, accounting standards update, transition option elected	us-gaap:AccountingStandardsUpdate202006RetrospectiveMember
Accounting Standards Update 2020-01
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adoption date	Jan. 1, 2021
Change in accounting principle, accounting standards update, adopted [true false]	true
Change in accounting principle, accounting standards update, immaterial effect [true false]	true

Revenue - Disaggregation of Rev

Revenue - Disaggregation of Revenue by Geography (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation Of Revenue [Line Items]
Total revenue	$ 1,067,471	$ 678,668	$ 2,819,163	$ 1,595,304
North America
Disaggregation Of Revenue [Line Items]
Total revenue	772,797	468,450	1,960,644	1,013,327
Europe
Disaggregation Of Revenue [Line Items]
Total revenue	160,257	107,116	456,420	269,681
Rest of World
Disaggregation Of Revenue [Line Items]
Total revenue	$ 134,417	$ 103,102	$ 402,099	$ 312,296

Revenue - Disaggregation of R_2

Revenue - Disaggregation of Revenue by Geography (Parenthetical) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation Of Revenue [Line Items]
Total revenue	$ 1,067,471	$ 678,668	$ 2,819,163	$ 1,595,304
United States
Disaggregation Of Revenue [Line Items]
Total revenue	$ 750,100	$ 455,900	$ 1,901,700	$ 985,000

Net Loss per Share - Numerators

Net Loss per Share - Numerators and Denominators of Basic and Diluted Net Loss per Share Computations for Common Stock (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Numerator:
Net loss	$ (71,959)	$ (199,853)	$ (510,505)	$ (831,740)
Basic shares:
Weighted-average common shares - Basic	1,580,966	1,466,420	1,543,568	1,446,040
Diluted shares:
Weighted-average common shares - Diluted	1,580,966	1,466,420	1,543,568	1,446,040
Net loss per share attributable to common stockholders:
Basic	$ (0.05)	$ (0.14)	$ (0.33)	$ (0.58)
Diluted	$ (0.05)	$ (0.14)	$ (0.33)	$ (0.58)
Class A Common Stock
Numerator:
Net loss	$ (60,340)	$ (164,499)	$ (426,077)	$ (680,951)
Net loss attributable to common stockholders	$ (60,340)	$ (164,499)	$ (426,077)	$ (680,951)
Basic shares:
Weighted-average common shares - Basic	1,325,700	1,207,015	1,288,290	1,183,882
Diluted shares:
Weighted-average common shares - Diluted	1,325,700	1,207,015	1,288,290	1,183,882
Net loss per share attributable to common stockholders:
Basic	$ (0.05)	$ (0.14)	$ (0.33)	$ (0.58)
Diluted	$ (0.05)	$ (0.14)	$ (0.33)	$ (0.58)
Class B Common Stock
Numerator:
Net loss	$ (1,076)	$ (3,234)	$ (7,822)	$ (13,867)
Net loss attributable to common stockholders	$ (1,076)	$ (3,234)	$ (7,822)	$ (13,867)
Basic shares:
Weighted-average common shares - Basic	23,639	23,732	23,651	24,109
Diluted shares:
Weighted-average common shares - Diluted	23,639	23,732	23,651	24,109
Net loss per share attributable to common stockholders:
Basic	$ (0.05)	$ (0.14)	$ (0.33)	$ (0.58)
Diluted	$ (0.05)	$ (0.14)	$ (0.33)	$ (0.58)
Class C Common Stock
Numerator:
Net loss	$ (10,543)	$ (32,120)	$ (76,606)	$ (136,922)
Net loss attributable to common stockholders	$ (10,543)	$ (32,120)	$ (76,606)	$ (136,922)
Basic shares:
Weighted-average common shares - Basic	231,627	235,674	231,627	238,049
Diluted shares:
Weighted-average common shares - Diluted	231,627	235,674	231,627	238,049
Net loss per share attributable to common stockholders:
Basic	$ (0.05)	$ (0.14)	$ (0.33)	$ (0.58)
Diluted	$ (0.05)	$ (0.14)	$ (0.33)	$ (0.58)

Net Loss per Share - Schedule o

Net Loss per Share - Schedule of Potentially Dilutive Shares Excluded from Calculation of Diluted Net Loss per Share (Details) - shares shares in Thousands	3 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Stock Options
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from calculation of diluted net loss per share	4,708	6,649
Unvested Restricted Stock Units And Restricted Stock Awards Not Subject To A Performance Condition
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from calculation of diluted net loss per share	95,874	142,466
Convertible Notes (If Converted)
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from calculation of diluted net loss per share	62,755	101,591

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021USD ($)Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of share-based employee compensation plans | Plan	3
Post-2017 Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation cost	$ 2,000
Weighted average recognition period	2 years 3 months 18 days
Post-2017 Awards Granted Prior to February 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Service condition satisfied, years	4 years
Post-2017 Awards Granted Prior to February 2018 | First Year
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting percentage	10.00%
Post-2017 Awards Granted Prior to February 2018 | Second Year
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting percentage	20.00%
Post-2017 Awards Granted Prior to February 2018 | Third Year
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting percentage	30.00%
Post-2017 Awards Granted Prior to February 2018 | Fourth Year
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award vesting percentage	40.00%
Post-2017 Awards Granted After February 2018 | Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Service condition satisfied, years	1 year
Post-2017 Awards Granted After February 2018 | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Service condition satisfied, years	4 years
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average recognition period	1 year
Unrecognized compensation cost	$ 4.9

Stockholders' Equity - Summary

Stockholders' Equity - Summary of RSU and RSA Activity (Details) - Restricted Stock Units and Restricted Stock Awards shares in Thousands	9 Months Ended
	Sep. 30, 2021$ / sharesshares
Weighted-Average Grant Date Fair Value per Restricted Stock
Weighted-Average Grant Date Fair Value per Restricted Stock, Unvested Beginning Balance | $ / shares	$ 15.10
Weighted-Average Grant Date Fair Value per Restricted Stock, Granted | $ / shares	59.13
Weighted-Average Grant Date Fair Value per Restricted Stock, Vested | $ / shares	15.64
Weighted-Average Grant Date Fair Value per Restricted Stock, Forfeited | $ / shares	15.04
Weighted-Average Grant Date Fair Value per Restricted Stock, Unvested Ending Balance | $ / shares	$ 23.19
Class A Common Stock
Outstanding Restricted Stock
Outstanding Restricted Stock, Unvested Beginning Balance | shares	131,172
Outstanding Restricted Stock, Granted | shares	18,168
Outstanding Restricted Stock, Vested | shares	(45,486)
Outstanding Restricted Stock, Forfeited | shares	(7,980)
Outstanding Restricted Stock, Unvested Ending Balance | shares	95,874

Stockholders' Equity - Summar_2

Stockholders' Equity - Summary of Stock Option Award Activity (Details) - Stock Options $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021USD ($)$ / sharesshares	Dec. 31, 2020USD ($)$ / sharesshares
Weighted-Average Exercise Price
Weighted-Average Exercise Price, Beginning balance | $ / shares	$ 10.37
Weighted-Average Exercise Price, Granted | $ / shares	49.63
Weighted-Average Exercise Price, Exercised | $ / shares	12.30
Weighted-Average Exercise Price, Forfeited | $ / shares	13.53
Weighted-Average Exercise Price, Ending balance | $ / shares	$ 10.38	$ 10.37
Weighted-Average Remaining Contractual Term
Weighted-Average Remaining Contractual Term (in years)	4 years 4 months 28 days	5 years 2 months 12 days
Aggregate Intrinsic Value
Aggregate Intrinsic Value, Outstanding | $	$ 298,934	$ 223,230
Class A Common Stock
Number of Shares
Number of Shares, Beginning balance	4,828
Number of Shares, Granted	48
Number of Shares, Exercised	(891)
Number of Shares, Forfeited	(7)
Number of Shares, Ending balance	3,978	4,828
Class B Common Stock
Number of Shares
Number of Shares, Beginning balance	796
Number of Shares, Exercised	(66)
Number of Shares, Ending balance	730	796

Stockholders' Equity - Summar_3

Stockholders' Equity - Summary of Total Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total	$ 300,898	$ 192,080	$ 794,571	$ 550,300
Cost of Revenue
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total	9,132	2,623	14,635	6,471
Research and Development
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total	198,893	132,003	537,177	377,836
Sales and Marketing
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total	51,675	27,393	118,250	79,306
General and Administrative
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total	$ 41,198	$ 30,061	$ 124,509	$ 86,687

Business Acquisitions - Additio

Business Acquisitions - Additional Information (Details) - USD ($) shares in Millions, $ in Millions	1 Months Ended		9 Months Ended
	May 31, 2021	Mar. 31, 2021	Sep. 30, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Goodwill deductible for tax purposes				$ 49.6
Wave Optics
Business Acquisition [Line Items]
Business combination total consideration including post combination expense	$ 541.8
Purchase price consideration	510.4
Business combination, consideration transferred, equity interests issued and issuable	252
Payment to acquire business	13.7
Business combination, recognized identifiable assets acquired and liabilities assumed, liabilities	238.4
Business combination, post combination expense	$ 31.4
Wave Optics | Class A Common Stock
Business Acquisition [Line Items]
Business combination consideration in shares issued or issuable	4.7
Fit Analytics
Business Acquisition [Line Items]
Purchase price consideration		$ 124.4
Other Acquisitions
Business Acquisition [Line Items]
Purchase price consideration			$ 123.8
Payment to acquire business			54.4
Goodwill deductible for tax purposes			1
Other Acquisitions | Other Liabilities
Business Acquisition [Line Items]
Business combination, recognized identifiable assets acquired and liabilities assumed, liabilities			12.8
Other Acquisitions | Class A Common Stock
Business Acquisition [Line Items]
Business combination, consideration transferred, equity interests issued and issuable			$ 56.6

Business Acquisitions - Summary

Business Acquisitions - Summary of Total Purchase Consideration Allocation (Details) - USD ($) $ in Thousands	Sep. 30, 2021	May 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Goodwill	$ 1,484,108			$ 939,259
Wave Optics
Business Acquisition [Line Items]
Goodwill		$ 370,236
Net deferred tax liability		(3,313)
Other assets acquired and liabilities assumed, net		13,111
Total		510,444
Wave Optics | Trademarks
Business Acquisition [Line Items]
Finite lived intangible assets		20,584
Wave Optics | Technology
Business Acquisition [Line Items]
Finite lived intangible assets		77,118
Wave Optics | Customer Relationships
Business Acquisition [Line Items]
Finite lived intangible assets		$ 32,708
Fit Analytics
Business Acquisition [Line Items]
Goodwill			$ 88,132
Net deferred tax liability			(5,643)
Other assets acquired and liabilities assumed, net			7,160
Total			124,449
Fit Analytics | Trademarks
Business Acquisition [Line Items]
Finite lived intangible assets			800
Fit Analytics | Technology
Business Acquisition [Line Items]
Finite lived intangible assets			17,000
Fit Analytics | Customer Relationships
Business Acquisition [Line Items]
Finite lived intangible assets			$ 17,000
Other Acquisitions
Business Acquisition [Line Items]
Goodwill	96,292
Net deferred tax liability	(7,273)
Other assets acquired and liabilities assumed, net	3,079
Total	123,798
Other Acquisitions | Technology
Business Acquisition [Line Items]
Finite lived intangible assets	27,700
Other Acquisitions | Customer Relationships
Business Acquisition [Line Items]
Finite lived intangible assets	$ 4,000
2020 Acquisitions
Business Acquisition [Line Items]
Goodwill				162,747
Net deferred tax liability				(5,741)
Other assets acquired and liabilities assumed, net				1,392
Total				204,510
2020 Acquisitions | Technology
Business Acquisition [Line Items]
Finite lived intangible assets				$ 46,112

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Changes in Carrying Amount of Goodwill (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2021USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill, beginning balance	$ 939,259
Goodwill acquired	554,660
Foreign currency translation	(9,811)
Goodwill, ending balance	$ 1,484,108

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 404,688	$ 226,471
Accumulated Amortization	143,557	120,542
Net	$ 261,131	$ 105,929
Domain Names
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Remaining Useful Life - Years	10 months 24 days	1 year 7 months 6 days
Gross Carrying Amount	$ 414	$ 414
Accumulated Amortization	344	283
Net	$ 70	$ 131
Trademarks
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Remaining Useful Life - Years	4 years 7 months 6 days
Gross Carrying Amount	$ 21,384
Accumulated Amortization	1,517
Net	$ 19,867
Technology
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Remaining Useful Life - Years	3 years 8 months 12 days	3 years 2 months 12 days
Gross Carrying Amount	$ 307,987	$ 206,197
Accumulated Amortization	127,150	111,129
Net	$ 180,837	$ 95,068
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Remaining Useful Life - Years	5 years 3 months 18 days
Gross Carrying Amount	$ 53,708
Accumulated Amortization	3,665
Net	$ 50,043
Patents
Finite-Lived Intangible Assets [Line Items]
Weighted-Average Remaining Useful Life - Years	4 years 2 months 12 days	4 years 10 months 24 days
Gross Carrying Amount	$ 21,195	$ 19,860
Accumulated Amortization	10,881	9,130
Net	$ 10,314	$ 10,730

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 18.1	$ 8.4	$ 43	$ 23.8

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets - Schedule of Estimated Intangible Asset Amortization Expense (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Finite Lived Intangible Assets Future Amortization Expense Current And Five Succeeding Fiscal Years [Abstract]
Remainder of 2021	$ 18,977
2022	70,174
2023	64,192
2024	52,542
2025	36,486
Thereafter	18,760
Net	$ 261,131	$ 105,929

Convertible Notes - Additional

Convertible Notes - Additional Information (Details)	Jan. 01, 2021USD ($)	Apr. 30, 2021USD ($)d$ / sharesshares	Apr. 30, 2020USD ($)$ / sharesshares	Aug. 31, 2019USD ($)$ / sharesshares	Sep. 30, 2021USD ($)$ / shares	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)$ / sharesshares	Sep. 30, 2020USD ($)	Dec. 31, 2020USD ($)
Debt Instrument [Line Items]
Proceeds from issuance of convertible notes, net of issuance costs							$ 1,137,227,000	$ 988,582,000
Accumulated deficit					$ (8,307,016,000)		(8,307,016,000)		$ (7,891,542,000)
Convertible senior notes, net					2,252,079,000		2,252,079,000		$ 1,675,169,000
Amortization of debt discount and issuance costs					1,109,000	$ 24,503,000	3,301,000	56,478,000
Induced conversion expense related to convertible notes					4,536,000		41,538,000
Exchange Agreements
Debt Instrument [Line Items]
Induced conversion expense related to convertible notes					$ 4,500,000		41,500,000
Shares issued under original terms of general conversion with net carrying amount							$ 1,132,600,000
Cumulative Effect, Period of Adoption, Adjustment
Debt Instrument [Line Items]
Accumulated deficit	$ (95,000,000)
Additional paid-in capital	(664,000,000)
Convertible senior notes, net	$ 569,000,000
Accounting Standards Update 2020-06
Debt Instrument [Line Items]
Change in accounting principle, accounting standards update, adoption date					Jan. 1, 2021		Jan. 1, 2021
Change in accounting principle, accounting standards update, early adoption [true false]					true		true
Change in accounting principle, accounting standards update, transition option elected							us-gaap:AccountingStandardsUpdate202006RetrospectiveMember
Class A Non-voting Common Stock | Exchange Agreements
Debt Instrument [Line Items]
Shares issued upon conversion | shares							52,400,000
Additional shares issued upon conversion | shares							700,000
Fair value of induced conversion exchange shares | shares							700,000
2027 Notes
Debt Instrument [Line Items]
Debt instrument, principal amount		$ 1,150,000,000			$ 1,150,000,000		$ 1,150,000,000
Indenture date		Apr. 30, 2021
Proceeds from issuance of convertible notes, net of issuance costs		$ 1,050,000,000
Debt instrument, maturity date		May 1, 2027
Debt instrument, redemption price percentage		100.00%
Debt instrument convertible, amortization period							5 years 7 months 6 days
Cap price, net cost					$ 86,800,000		$ 86,800,000
2027 Notes | Class A Non-voting Common Stock
Debt Instrument [Line Items]
Number of shares issued upon conversion | shares		11.2042
Debt instrument, convertible principal amount used in conversion rate		$ 1,000
Conversion price per share | $ / shares		$ 89.25
Debt instrument convertible, percentage of conversion price		130.00%
Debt instrument convertible, number of trading days | d		20
Debt instrument, redemption price percentage		100.00%
Cap price, per share | $ / shares					$ 121.02		$ 121.02
2027 Notes | Class A Non-voting Common Stock | Scenario One
Debt Instrument [Line Items]
Debt instrument convertible, percentage of conversion price		130.00%
Debt instrument convertible, number of trading days | d		20
Debt instrument convertible, number of consecutive trading days | d		30
2027 Notes | Class A Non-voting Common Stock | Scenario Two
Debt Instrument [Line Items]
Debt instrument, convertible principal amount used in conversion rate		$ 1,000
Debt instrument convertible, number of consecutive trading days | d		10
Debt instrument, convertible, threshold business days		5 days
2027 Notes | Class A Non-voting Common Stock | Scenario Two | Maximum
Debt Instrument [Line Items]
Debt instrument convertible, percentage of conversion price		98.00%
2025 Notes
Debt Instrument [Line Items]
Debt instrument, principal amount			$ 1,000,000,000		$ 284,105,000		$ 284,105,000
Debt instrument, maturity date			May 1, 2025
Proceeds from issuance of convertible notes, net of issuance costs			$ 888,600,000
Interest payment beginning date			Nov. 1, 2020
Debt instrument, interest rate			0.25%
Debt instrument, interest rate terms							Interest is payable in cash semi-annually in arrears beginning on November 1, 2020 at a rate of 0.25% per year.
Debt instrument convertible, amortization period							3 years 7 months 6 days
If-converted value exceeding principal amount							$ 683,900,000
Cap price, net cost					$ 100,000,000		100,000,000
2025 Notes | Exchange Agreements
Debt Instrument [Line Items]
Debt conversion, principal amount							$ 715,900,000
2025 Notes | Class A Non-voting Common Stock
Debt Instrument [Line Items]
Number of shares issued upon conversion | shares			46.1233
Debt instrument, convertible principal amount used in conversion rate			$ 1,000
Conversion price per share | $ / shares			$ 21.68
Cap price, per share | $ / shares					$ 32.12		$ 32.12
2026 Notes
Debt Instrument [Line Items]
Debt instrument, principal amount				$ 1,265,000,000	$ 838,495,000		$ 838,495,000
Debt instrument, maturity date				Aug. 1, 2026
Proceeds from issuance of convertible notes, net of issuance costs				$ 1,150,000,000
Interest payment beginning date				Feb. 1, 2020
Debt instrument, interest rate				0.75%
Debt instrument, interest rate terms							Interest is payable in cash semi-annually in arrears beginning on February 1, 2020 at a rate of 0.75% per year.
Debt instrument convertible, amortization period							4 years 9 months 18 days
If-converted value exceeding principal amount							$ 1,900,000,000
Cap price, net cost					$ 102,100,000		102,100,000
2026 Notes | Exchange Agreements
Debt Instrument [Line Items]
Debt conversion, principal amount							$ 426,500,000
2026 Notes | Class A Non-voting Common Stock
Debt Instrument [Line Items]
Number of shares issued upon conversion | shares				43.8481
Debt instrument, convertible principal amount used in conversion rate				$ 1,000
Conversion price per share | $ / shares				$ 22.81
Cap price, per share | $ / shares					$ 32.58		$ 32.58
2025, 2026 and 2027 Notes
Debt Instrument [Line Items]
Amortization of debt issuance costs					$ 1,100,000		$ 3,300,000
Amortization of debt discount and issuance costs						24,500,000		56,500,000
Contractual interest expense					$ 1,900,000	$ 3,000,000	$ 7,200,000	$ 8,200,000
Initial Placement | 2027 Notes
Debt Instrument [Line Items]
Debt instrument, principal amount		$ 1,000,000,000
Over-Allotment Option | 2027 Notes
Debt Instrument [Line Items]
Debt instrument, principal amount		$ 150,000,000

Convertible Notes - Summary of

Convertible Notes - Summary of Convertible Notes (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Apr. 30, 2021	Apr. 30, 2020	Aug. 31, 2019
2027 Notes
Debt Instrument [Line Items]
Principal	$ 1,150,000	$ 1,150,000
Unamortized debt issuance costs	(11,891)
Net carrying amount	1,138,109
2025 Notes
Debt Instrument [Line Items]
Principal	284,105		$ 1,000,000
Unamortized debt issuance costs	(2,329)
Net carrying amount	281,776
2026 Notes
Debt Instrument [Line Items]
Principal	838,495			$ 1,265,000
Unamortized debt issuance costs	(6,301)
Net carrying amount	$ 832,194

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) - USD ($)	1 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
	Jan. 31, 2017	Dec. 31, 2019	Sep. 30, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2022	Dec. 31, 2021	Jan. 17, 2020	Oct. 31, 2018
Indemnification Agreement
Loss Contingencies [Line Items]
Liabilities recorded			$ 0
Securities Class Actions
Loss Contingencies [Line Items]
Legal expense, net of amounts directly covered by insurance		$ 100,000,000
Securities Class Actions | Pending Litigation
Loss Contingencies [Line Items]
Loss contingency, expected settlement amount									$ 187,500,000
Google Cloud Platform License Agreement
Loss Contingencies [Line Items]
Purchase commitment, description			The agreement has an initial term of five years and we are required to purchase at least $400.0 million of cloud services in each year of the agreement. For each of the first four years, up to 15% of this amount may be moved to a subsequent year. If we fail to meet the minimum purchase commitment during any year, we are required to pay the difference.
Initial term of agreement	5 years
Minimum amount of services to be purchased in each year	$ 400,000,000
Initial period required to purchase minimum amount of services	4 years
Google Cloud Platform License Agreement | Maximum
Loss Contingencies [Line Items]
Purchase commitment, percentage of minimum purchase requirement that can be moved to subsequent year	15.00%
AWS Enterprise Agreement, Cloud Services
Loss Contingencies [Line Items]
Purchase commitment, description			In March 2016, we entered into the AWS Enterprise Agreement for the use of cloud services from Amazon Web Services, Inc. (“AWS”). Under the agreement, as amended, we are committed to spend an aggregate of $1.1 billion between January 2017 and December 2022 on AWS services ($90.0 million in 2018, $150.0 million in 2019, $215.0 million in 2020, $280.0 million in 2021, and $349.0 million in 2022). If we fail to meet the minimum purchase commitment during any year, we are required to pay the difference. Any such payment may be applied to future use of AWS services during the term, although it will not count towards meeting the future minimum purchase commitments.
Minimum purchase commitment to spend between January 2017 and December 2022										$ 1,100,000,000
Amount of purchase commitment paid				$ 215,000,000	$ 150,000,000	$ 90,000,000
AWS Enterprise Agreement, Cloud Services | Scenario Forecast
Loss Contingencies [Line Items]
Minimum purchase commitment							$ 349,000,000	$ 280,000,000

Commitments and Contingencies_2

Commitments and Contingencies - Schedule of Future Minimum Contractual Commitments (Details) $ in Thousands	Sep. 30, 2021USD ($)
Commitments And Contingencies Disclosure [Abstract]
Remainder of 2021	$ 198,366
2022	390,379
2023	12,920
2024	3,013
2025	57
Thereafter	2
Total minimum commitments	$ 604,737

Leases - Components of Lease Co

Leases - Components of Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Leases [Abstract]
Operating lease expense	$ 17,795	$ 15,335	$ 49,883	$ 45,074
Sublease income	(682)	(755)	(2,010)	(2,290)
Total net lease costs	$ 17,113	$ 14,580	$ 47,873	$ 42,784

Leases - Summary of Weighted Av

Leases - Summary of Weighted Average Remaining Lease Term and Discount Rate Related to Operating Leases (Details)	Sep. 30, 2021	Sep. 30, 2020
Leases [Abstract]
Weighted-average remaining lease term	6 years 10 months 24 days	7 years 6 months
Weighted-average discount rate	5.20%	5.60%

Leases - Present Value of Opera

Leases - Present Value of Operating Lease Liabilities (Details) $ in Thousands	Sep. 30, 2021USD ($)
Leases [Abstract]
Remainder of 2021	$ 13,571
2022	76,751
2023	71,471
2024	70,224
2025	64,877
Thereafter	119,417
Total lease payments	416,311
Less: Imputed interest	(67,614)
Present value of lease liabilities	$ 348,697

Leases - Additional Information

Leases - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Lessee Lease Description [Line Items]
Lease obligations for additional leases not yet commenced	$ 43.6		$ 43.6
Operating leases not yet commenced, start year			2021
Operating leases not yet commenced, end year			2022
Operating lease liabilities	19.1	$ 18.3	$ 54.1	$ 56.6
Lease liabilities arising from obtaining operating lease right-of-use assets	$ 8.4		$ 56.1	$ 24
Minimum
Lessee Lease Description [Line Items]
Operating leases, terms	1 year		1 year
Maximum
Lessee Lease Description [Line Items]
Operating leases, terms	5 years		5 years

Strategic Investments - Additio

Strategic Investments - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Investment Holdings [Line Items]
Carrying value of investment in privately-held companies	$ 249.8	$ 249.8		$ 169.5
Realized gains on privately held investments		27.8
Carrying value of investment in publicly traded company	133.8	133.8
Impairment expense on investment			$ 15.5
Privately Held Securities
Investment Holdings [Line Items]
Unrealized gains on investments	60.6	$ 136
Publicly Traded Equity Securities
Investment Holdings [Line Items]
Unrealized gains on investments	$ 62.6

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Financial Assets Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, Total Estimated Fair Value	$ 1,500,000
Equity Securities, Total Estimated Fair Value	133,800
Fair Value, Measurements, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash and Marketable securities, Cost or Amortized Cost		$ 2,537,472
Marketable securities, Gross Unrealized Gains		131
Marketable securities, Gross Unrealized Losses		(63)
Cash and Marketable Securities, Total Estimated Fair Value		2,537,540
Cash, Equity Securities and Marketable securities, Cost or Amortized Cost	3,553,011
Equity Securities and Marketable securities, Gross Unrealized Gains	62,692
Equity Securities and Marketable securities, Gross Unrealized Losses	(99)
Cash, Equity Securities and Marketable Securities, Total Estimated Fair Value	3,615,604
Fair Value, Measurements, Recurring | Cash
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash, Cost or Amortized Cost	1,906,445	464,006
Cash, Total Estimated Fair Value	1,906,445	464,006
Fair Value, Measurements, Recurring | Level 1 Securities | U.S. Government Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, Cost or Amortized Cost	767,710	1,272,125
Marketable securities, Gross Unrealized Gains	45	122
Marketable securities, Gross Unrealized Losses	(45)	(21)
Marketable securities, Total Estimated Fair Value	767,710	1,272,226
Fair Value, Measurements, Recurring | Level 1 Securities | U.S. Government Agency Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, Cost or Amortized Cost	135,445	245,055
Marketable securities, Gross Unrealized Gains	1	8
Marketable securities, Gross Unrealized Losses	(10)	(24)
Marketable securities, Total Estimated Fair Value	135,436	245,039
Fair Value, Measurements, Recurring | Level 1 Securities | Publicly Traded Equity Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity Securities, Fair Value	71,139
Equity Securities, Gross Unrealized Gains	62,644
Equity Securities, Total Estimated Fair Value	133,783
Fair Value, Measurements, Recurring | Level 2 Securities | Corporate Debt Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, Cost or Amortized Cost	113,900	81,158
Marketable securities, Gross Unrealized Gains	2	1
Marketable securities, Gross Unrealized Losses	(44)	(18)
Marketable securities, Total Estimated Fair Value	113,858	81,141
Fair Value, Measurements, Recurring | Level 2 Securities | Commercial Paper
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, Cost or Amortized Cost	471,936	425,861
Marketable securities, Total Estimated Fair Value	471,936	425,861
Fair Value, Measurements, Recurring | Level 2 Securities | Certificates of Deposit
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities, Cost or Amortized Cost	86,436	49,267
Marketable securities, Total Estimated Fair Value	$ 86,436	$ 49,267

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities contractual maturities	$ 291.5
Marketable securities	1,500
Level 2 Securities | 2027 Notes
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Convertible notes	1,300
Level 2 Securities | 2025 Notes
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Convertible notes	968.9
Level 2 Securities | 2026 Notes
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Convertible notes	$ 2,700
Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities contractual maturities period	1 year
Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable securities contractual maturities period	5 years

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income tax expense	$ 992	$ 909	$ 553	$ 527

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) - Schedules of Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Accumulated Other Comprehensive Income Loss [Line Items]
Balance, beginning of period			$ 2,329,976
OCI before reclassifications			(11,513)
Amounts reclassified from AOCI			(71)
Total other comprehensive income (loss), net of tax	$ (4,068)	$ 9,108	(11,584)	$ 7,926
Balance, end of period	3,440,116	2,198,771	3,440,116	2,198,771
Marketable Securities
Accumulated Other Comprehensive Income Loss [Line Items]
Balance, beginning of period			(87)
OCI before reclassifications			(48)
Amounts reclassified from AOCI			(71)
Total other comprehensive income (loss), net of tax			(119)
Balance, end of period	(206)		(206)
Foreign Currency Translation
Accumulated Other Comprehensive Income Loss [Line Items]
Balance, beginning of period			21,450
OCI before reclassifications			(11,465)
Total other comprehensive income (loss), net of tax			(11,465)
Balance, end of period	9,985		9,985
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income Loss [Line Items]
Balance, beginning of period	13,847	(609)	21,363	573
Total other comprehensive income (loss), net of tax	(4,068)	9,108	(11,584)	7,926
Balance, end of period	$ 9,779	$ 8,499	$ 9,779	$ 8,499

Property and Equipment, Net - P

Property and Equipment, Net - Property and Equipment, Net by Geographic Area (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Property and equipment, net:
Total property and equipment, net	$ 189,946	$ 178,709
United States
Property and equipment, net:
Total property and equipment, net	165,346	157,596
Rest of World
Property and equipment, net:
Total property and equipment, net	$ 24,600	$ 21,113

Property and Equipment, Net -_2

Property and Equipment, Net - Property and Equipment, Net by Geographic Area (Parenthetical) (Details) - Country	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Geographic Concentrations | Property and Equipment Net | Rest of World
Revenues From External Customers And Long Lived Assets [Line Items]
Number of individual country exceeded 10% of total property and equipment	0	0