Lyft (LYFT) 10-K28 Feb 202019 FY Annual reportFinancial data

Company Profile

Cover Page

Cover Page - USD ($) $ in Billions	12 Months Ended
Cover Page - USD ($) $ in Billions	Dec. 31, 2019	Feb. 21, 2020	Jun. 28, 2019
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2019
Document Transition Report	false
Entity File Number	001-38846
Entity Registrant Name	Lyft, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	20-8809830
Entity Address, Address Line One	185 Berry Street,
Entity Address, Address Line Two	Suite 5000
Entity Address, City or Town	San Francisco
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94107
City Area Code	844
Local Phone Number	250-2773
Title of 12(b) Security	Class A common stock, par value of $0.00001 per share
Trading Symbol	LYFT
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 14.1
Documents Incorporated by Reference	Portions of the registrant’s Proxy Statement for the 2020 Annual Meeting of Stockholders are incorporated herein by reference in Part III of this Annual Report on Form 10-K to the extent stated herein. Such proxy statement will be filed with the Securities and Exchange Commission within 120 days of the registrant’s fiscal year ended December 31, 2019.
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Entity Central Index Key	0001759509
Current Fiscal Year End Date	--12-31
Class A Common Stock
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		297,836,880
Class B Common Stock
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		8,802,629

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 358,319	$ 517,690
Short-term investments	2,491,805	1,520,180
Prepaid expenses and other current assets	397,239	282,572
Total current assets	3,247,363	2,320,442
Restricted cash and cash equivalents	204,976	187,374
Restricted investments	1,361,045	863,713
Property and equipment, net	188,603	109,257
Operating lease right of use assets	441,258
Intangible assets, net	82,919	117,733
Goodwill	158,725	152,085
Other assets	6,494	9,439
Total assets	5,691,383	3,760,043
Current liabilities
Accounts payable	38,839	32,343
Insurance reserves	1,378,462	810,273
Accrued and other current liabilities	939,865	606,203
Operating lease liabilities — current	94,199
Total current liabilities	2,451,365	1,448,819
Operating lease liabilities	382,077
Other liabilities	3,857	30,458
Total liabilities	2,837,299	1,479,277
Commitments and contingencies (Note 8)
Redeemable convertible preferred stock, $0.00001 par value; no and 227,328,900 shares authorized as of December 31, 2019 and December 31, 2018, respectively; no and 219,175,709 shares issued and outstanding as of December 31, 2019 and December 31, 2018, respectively	0	5,152,047
Stockholders’ equity (deficit)
Preferred stock, $0.00001 par value; 1,000,000,000 and no shares authorized as of December 31, 2019 and December 31, 2018, respectively; no shares issued and outstanding as of December 31, 2019 and December 31, 2018	0	0
Common stock, $0.00001 par value; 18,000,000,000 Class A shares and 340,000,000 shares authorized, 293,793,151 Class A shares and 22,438,472 shares issued and outstanding, as of December 31, 2019 and December 31, 2018, respectively; 100,000,000 and no Class B shares authorized, 8,802,629 and no Class B shares issued and outstanding, as of December 31, 2019 and December 31, 2018, respectively	3	0
Additional paid-in capital	8,398,927	73,916
Accumulated other comprehensive income	2,725	133
Accumulated deficit	(5,547,571)	(2,945,330)
Total stockholders’ equity (deficit)	2,854,084	(2,871,281)
Total liabilities, redeemable convertible preferred stock and stockholders’ equity (deficit)	$ 5,691,383	$ 3,760,043

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2019	Dec. 31, 2018
Redeemable convertible preferred stock, par value (in dollars per share)	$ 0.00001	$ 0.00001
Redeemable convertible preferred stock, shares authorized (in shares)	0	227,328,900
Redeemable convertible preferred stock, shares issued (in shares)	0	219,175,709
Redeemable convertible preferred stock, shares outstanding (in shares)	0	219,175,709
Preferred stock, par value (in dollars per share)	$ 0.00001	$ 0.00001
Preferred stock, shares authorized (in shares)	1,000,000,000	0
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.00001	$ 0.00001
Common stock, shares authorized (in shares)	0	340,000,000
Common stock, shares issued (in shares)	0	22,438,472
Common stock, shares outstanding (in shares)	0	22,438,472
Class A Common Stock
Common stock, shares authorized (in shares)	18,000,000,000	0
Common stock, shares issued (in shares)	293,793,151	0
Common stock, shares outstanding (in shares)	293,793,151	0
Class B Common Stock
Common stock, shares authorized (in shares)	100,000,000	0
Common stock, shares issued (in shares)	8,802,629	0
Common stock, shares outstanding (in shares)	8,802,629	0

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue	$ 3,615,960	$ 2,156,616	$ 1,059,881
Costs and expenses
Cost of revenue	2,176,469	1,243,400	659,533
Operations and support	636,116	338,402	183,513
Research and development	1,505,640	300,836	136,646
Sales and marketing	814,122	803,751	567,015
General and administrative	1,186,093	447,938	221,446
Total costs and expenses	6,318,440	3,134,327	1,768,153
Loss from operations	(2,702,480)	(977,711)	(708,272)
Interest income	102,506	66,462	20,243
Other income, net	89	652	284
Loss before income taxes	(2,599,885)	(910,597)	(687,745)
Provision for income taxes	2,356	738	556
Net loss	$ (2,602,241)	$ (911,335)	$ (688,301)
Net loss per share, basic and diluted (in dollars per share)	$ (11.44)	$ (43.04)	$ (35.53)
Weighted-average number of shares outstanding used to compute net loss per share, basic and diluted (in shares)	227,498,000	21,176,000	19,371,000
Stock-based compensation included in costs and expenses:
Stock-based compensation expense	$ 1,599,311	$ 8,577	$ 9,546
Cost of revenue
Stock-based compensation included in costs and expenses:
Stock-based compensation expense	81,321	501	464
Operations and support
Stock-based compensation included in costs and expenses:
Stock-based compensation expense	75,212	177	2,549
Research and development
Stock-based compensation included in costs and expenses:
Stock-based compensation expense	971,941	4,107	2,379
Sales and marketing
Stock-based compensation included in costs and expenses:
Stock-based compensation expense	72,046	261	415
General and administrative
Stock-based compensation included in costs and expenses:
Stock-based compensation expense	$ 398,791	$ 3,531	$ 3,739

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net loss	$ (2,602,241)	$ (911,335)	$ (688,301)
Other comprehensive income (loss)
Foreign currency translation adjustment	162	988	0
Unrealized gain (loss) on marketable securities, net of taxes	2,430	156	(918)
Other comprehensive income (loss)	2,592	1,144	(918)
Comprehensive loss	$ (2,599,649)	$ (910,191)	$ (689,219)

Consolidated Statements of Rede

Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Redeemable Convertible Preferred Stock	Common Stock	Common StockClass A and Class B Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2016		144,778,000
Beginning balance at Dec. 31, 2016		$ 2,238,770
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance of Series G redeemable convertible preferred stock, net of issuance cost (in shares)		18,662,000
Issuance of Series G redeemable convertible preferred stock, net of issuance cost		$ 599,715
Issuance of Series H redeemable convertible preferred stock, net of issuance cost (in shares)		36,375,000
Issuance of Series H redeemable convertible preferred stock, net of issuance cost		$ 1,445,564
Ending balance (in shares) at Dec. 31, 2017		199,815,000
Ending balance at Dec. 31, 2017		$ 4,284,049
Beginning balance (in shares) at Dec. 31, 2016			18,734,000
Beginning balance at Dec. 31, 2016	$ (1,303,730)		$ 0		$ 42,057	$ (1,345,694)	$ (93)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)			1,181,000
Issuance of common stock upon exercise of stock options	3,864				3,864
Issuance of restricted common stock upon early exercise of stock options (in shares)			3,000
Repurchase of common stock (in shares)			(2,000)
Vesting of early exercised stock options	101				101
Stock-based compensation	9,546				9,546
Other comprehensive income (loss)	(918)						(918)
Net loss	(688,301)					(688,301)
Ending balance (in shares) at Dec. 31, 2017			19,916,000
Ending balance at Dec. 31, 2017	$ (1,979,438)		$ 0		55,568	(2,033,995)	(1,011)
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance of Series H redeemable convertible preferred stock, net of issuance cost (in shares)		6,397,000
Issuance of Series H redeemable convertible preferred stock, net of issuance cost		$ 254,162
Issuance of Series I redeemable convertible preferred stock, net of issuance cost (in shares)		12,429,000
Issuance of Series I redeemable convertible preferred stock, net of issuance cost		$ 588,496
Issuance of Series I redeemable convertible preferred stock issued as consideration as part of a business combination (in shares)		535,000
Issuance of Series I redeemable convertible preferred stock issued as consideration as part of a business combination		$ 25,340
Ending balance (in shares) at Dec. 31, 2018	219,175,709	219,176,000
Ending balance at Dec. 31, 2018	$ 5,152,047	$ 5,152,047
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)			2,254,000
Issuance of common stock upon exercise of stock options	9,564				9,564
Issuance of restricted common stock upon early exercise of stock options (in shares)			27,000
Issuance of restricted stock awards granted in conjunction with a business combination (in shares)			241,000
Vesting of early exercised stock options	207				207
Stock-based compensation	8,577				8,577
Other comprehensive income (loss)	1,144						1,144
Net loss	$ (911,335)					(911,335)
Ending balance (in shares) at Dec. 31, 2018	22,438,472		22,438,000
Ending balance at Dec. 31, 2018	$ (2,871,281)		$ 0		73,916	(2,945,330)	133
Increase (Decrease) in Temporary Equity [Roll Forward]
Conversion of redeemable convertible preferred stock to common stock in connection with initial public offering (in shares)		(219,176,000)
Conversion of redeemable convertible preferred stock to common stock in connection with initial public offering		$ (5,152,047)
Ending balance (in shares) at Dec. 31, 2019	0	0
Ending balance at Dec. 31, 2019	$ 0	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)	10,856,000			10,855,000
Issuance of common stock upon exercise of stock options	$ 18,336				18,336
Issuance of common stock upon settlement of RSUs (in shares)				28,622,000
Issuance of common stock under employee stock purchase plan (in shares)				404,000
Issuance of common stock under employee stock purchase plan	14,767				14,767
Shares withheld related to net share settlement (in shares)				(14,394,000)
Shares withheld related to net share settlement	(942,982)				(942,982)
Issuance of common stock in connection with initial public offering, net of offering costs, underwriting discounts and commissions (in shares)				35,497,000
Issuance of common in connection with initial public offering, net of offering costs, underwriting discounts and commissions	2,483,623			$ 1	2,483,622
Conversion of redeemable convertible preferred stock to common stock in connection with initial public offering (in shares)				219,176,000
Conversion of redeemable convertible preferred stock to common stock in connection with initial public offering	5,152,047			$ 2	5,152,045
Canceled escrow shares related to a business combination (in shares)				(2,000)
Canceled escrow shares related to business combination	(90)				(90)
Vesting of early exercised stock options	2				2
Stock-based compensation	1,599,311				1,599,311
Other comprehensive income (loss)	2,592						2,592
Net loss	$ (2,602,241)					(2,602,241)
Ending balance (in shares) at Dec. 31, 2019	0			302,596,000
Ending balance at Dec. 31, 2019	$ 2,854,084			$ 3	$ 8,398,927	$ (5,547,571)	$ 2,725

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities
Net loss	$ (2,602,241)	$ (911,335)	$ (688,301)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation and amortization	108,429	18,752	2,611
Stock-based compensation	1,599,311	8,577	9,546
Amortization of premium on marketable securities	597	473	948
Accretion of discount on marketable securities	(39,285)	(23,605)	(5,542)
Loss on disposal of assets	36,541	0	0
Other	(875)	989	0
Changes in operating assets and liabilities
Prepaid expenses and other assets	(119,453)	(75,640)	(111,772)
Operating lease right-of-use assets	108,600
Accounts payable	5,067	(40,811)	21,384
Insurance reserves	568,190	433,735	244,587
Accrued and other liabilities	332,363	308,192	133,013
Lease liabilities	(102,946)
Net cash used in operating activities	(105,702)	(280,673)	(393,526)
Cash flows from investing activities
Purchases of marketable securities	(6,448,895)	(5,454,118)	(2,559,423)
Purchases of term deposits	(142,811)	0	0
Proceeds from sales of marketable securities	1,092,978	900,361	872,298
Proceeds from maturities of marketable securities	4,071,165	3,838,464	707,722
Purchases of property and equipment and scooter fleet	(178,088)	(68,668)	(7,537)
Purchases of other intangible assets	0	(2,200)	(4,486)
Cash paid for acquisitions, net of cash acquired	(12,323)	(257,591)	0
Other investing activities	7,131	0	0
Net cash used in investing activities	(1,610,843)	(1,043,752)	(991,426)
Cash flows from financing activities
Proceeds from issuance of common stock in initial public offering, net of underwriting commissions, offering costs and reimbursements	2,484,029	0	0
Proceeds from issuance of redeemable convertible preferred stock, net of issuance costs	0	842,658	2,045,279
Proceeds from exercise of stock options and other common stock issuances	33,062	9,986	3,672
Payment of deferred offering costs	0	(406)	0
Taxes paid related to net share settlement of equity awards	(942,895)	0	0
Net cash provided by financing activities	1,574,196	852,238	2,048,951
Effect of foreign exchange on cash, cash equivalents and restricted cash and cash equivalents	328	(246)	0
Net increase (decrease) in cash, cash equivalents and restricted cash and cash equivalents	(142,021)	(472,433)	663,999
Beginning of period	706,486	1,178,919	514,920
End of period	564,465	706,486	1,178,919
Reconciliation of cash, cash equivalents and restricted cash and cash equivalents to the consolidated balance sheets
Total cash, cash equivalents and restricted cash and cash equivalents	564,465	1,178,919	1,178,919
Non-cash investing and financing activities
Purchases of property and equipment, and scooter fleet not yet settled	13,070	8,154	704
Deferred offering costs accrued, unpaid	0	1,689	0
Right of use assets acquired under operating leases	264,076
Redeemable convertible preferred stock issued as part of a business combination	0	25,340	0
Conversion of redeemable convertible preferred stock to common stock in connection with initial public offering	5,152,047	0	0
Reclassification of deferred offering costs to additional paid-in capital upon initial public offering	7,690	0	0
Decrease in goodwill from measurement period adjustments related to business combinations	$ 3,240	$ 0	$ 0

Description of Business and Bas

Description of Business and Basis of Presentation	12 Months Ended
Description of Business and Basis of Presentation	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business and Basis of Presentation	Description of Business and Basis of Presentation Organization and Description of Business Lyft, Inc. (the “Company” or “Lyft”) is incorporated in Delaware with its headquarters in San Francisco, California. Lyft operates multimodal transportation networks in the United States and Canada that offer access to a variety of transportation options through the Company’s platform and mobile-based applications. This network enables multiple modes of transportation including the facilitation of peer-to-peer ridesharing by connecting drivers who have a car with passengers who need a ride. The Company’s proprietary technology platform (the “Lyft Platform”) provides a marketplace where drivers can be matched with passengers via the Lyft mobile application (the “App”) where the Company operates as a Transportation Network Company (“TNC”). Drivers, who are considered the Company’s customers, provide transportation services to their passengers through various ride offerings (e.g., private rides, shared rides, luxury vehicle rides, etc.) on the Lyft Platform. In 2018, the Company expanded its platform to offer access to new transportation options. This expansion included launching a network of shared bikes and scooters (“Light Vehicles”) in select cities available to renters for short rides. The Company also increased access to its Express Drive program in 2018. The Express Drive program allows drivers to enter into short-term rental agreements from third-party operators for vehicles that may be used to provide ridesharing services on the Lyft Platform. Basis of Presentation These consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (U.S. GAAP) and include the accounts of the Company and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated. The Company uses the U.S. dollar predominantly as the functional currency of its foreign subsidiaries. For foreign subsidiaries where the U.S. dollar is the functional currency, gains and losses from remeasurement of foreign currency balances into U.S. dollars are included in the consolidated statements of operations. For the foreign subsidiary where the local currency is the functional currency, translation adjustments of foreign currency financial statements into U.S. dollars are recorded to a separate component of accumulated other comprehensive loss. Initial Public Offering The Company’s registration statement on Form S-1 (the “IPO Registration Statement”) related to its initial public offering (“IPO”) was declared effective on March 28, 2019, and the Company’s Class A common stock began trading on the Nasdaq Global Select Market on March 29, 2019. On April 2, 2019, the Company completed its IPO, in which the Company sold 32,500,000 shares of Class A common stock at a price to the public of $72.00 per share. On April 9, 2019, the Company sold an additional 2,996,845 shares of Class A common stock at a price to the public of $72.00 per share pursuant to the exercise of the underwriters’ option to purchase additional shares. The Company received aggregate net proceeds of $2.5 billion after deducting underwriting discounts and commissions of $70.3 million and offering expenses of $7.7 million subject to certain cost reimbursements. Immediately prior to the completion of the IPO, 219,175,709 shares of redeemable convertible preferred stock then outstanding converted into an equivalent number of shares of common stock. Immediately prior to the completion of the IPO, the Company filed its Amended and Restated Certificate of Incorporation, which authorizes a total of 18,000,000,000 shares of Class A common stock, 100,000,000 shares of Class B common stock, and 1,000,000,000 shares of preferred stock. Upon the filing of the Amended and Restated Certificate of Incorporation, 255,007,393 shares of the Company’s common stock then outstanding were automatically reclassified into an equivalent number of shares of the Company’s Class A common stock. Immediately after the reclassification and prior to the completion of the IPO, a total of 12,779,709 shares of Class A common stock held by Logan Green, John Zimmer and their respective affiliated trusts were exchanged for an equivalent number of shares of Class B common stock pursuant to the terms of certain exchange agreements. As a result, following the completion of the IPO, the Company has two classes of authorized and outstanding common stock: Class A common stock and Class B common stock.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
Summary of Significant Accounting Policies	Dec. 31, 2019
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and reported amounts of revenues and expenses during the reporting periods. The Company bases its estimates on various factors and information which may include, but are not limited to, history and prior experience, expected future results, new related events and economic conditions, which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Actual results could differ materially from those estimates. Significant items subject to estimates and assumptions include those related to losses resulting from insurance claims, fair value of financial instruments, goodwill and identifiable intangible assets, leases, indirect tax obligations, legal contingencies, valuation allowance for deferred income taxes, and the valuation of stock-based compensation. Segment Information Operating segments are defined as components of an entity for which separate financial information is available and that is regularly reviewed by the Chief Operating Decision Maker (CODM) in deciding how to allocate resources to an individual segment and in assessing performance. The Company’s Chief Executive Officer is the Company’s CODM. The CODM reviews financial information presented on a consolidated basis for purposes of making operating decisions, allocating resources, and evaluating financial performance. As such, the Company has determined that it operates in one operating segment. During the years ended December 31, 2019, 2018 and 2017, the Company did not generate material international revenues and as of December 31, 2019, 2018 and 2017, the Company did not have material assets located outside of the United States. Revenue Recognition The Company generates substantially all of its revenue from its ridesharing marketplace that connects drivers and passengers. The Company also generates revenue from its network of shared bikes and scooters, its Express Drive program, Lyft Rentals and Driver Centers. Beginning in 2018, the Company generated revenue from subscription fees paid by riders to access its network of shared bikes and single-use ride fees paid by riders to access its network of shared bikes and scooters. Subscription fees are recognized on a straight-line basis over the subscription period. Single-use ride fees are recognized upon completion of each related ride. Revenue from the network of shared bikes and scooters was not material for the years ended December 31, 2019 and 2018. For its Express Drive program, the Company primarily generates revenue from lease income earned under an arrangement with one of its third-party Express Drive partners. In February 2020, the Company signed and closed the acquisition of Flexdrive . Refer to Note 16 “ Subsequent Events ” to our consolidated financial statements for information regarding this acquisition. The Company recognizes revenue for its rideshare marketplace in accordance with Accounting Standards Codification Topic 606 (“ASC 606”), “Revenue from Contracts with Customers.” Rideshare Marketplace: The Company generates revenue from service fees and commissions (collectively, “fees”) paid by drivers for use of the Lyft Platform and related activities to connect drivers with passengers to facilitate and successfully complete rides via the App where Lyft operates as a Transportation Network Company. The Company recognizes revenue upon completion of each ride. Under the ToS, drivers agree that the Company retains the applicable fee as consideration for their use of the Lyft Platform and related activities from the fare and related charges it collects from passengers on behalf of drivers. Principal vs. Agent Considerations: The Company evaluates the presentation of revenue on a gross vs. net basis based on whether it acts as a principal by controlling the transportation service provided to the passenger or whether it acts as an agent by arranging for third parties to provide the service to the passenger. The Company facilitates the provision of a transportation service by a driver to a passenger (the driver’s customer) in order for the driver to fulfill their contractual promise to the passenger. The driver fulfills their promise to provide a transportation service to their customer through use of the Lyft Platform. While the Company facilitates setting the price for transportation services, the drivers and passengers have the discretion in accepting the transaction price through the platform. The Company is not responsible for fulfilling transportation services being provided to the passenger nor does the Company have inventory risk related to these services. The Company is acting as an agent in facilitating the ability for a driver to provide a transportation service to a passenger. The Company reports revenue on a net basis, reflecting the fee owed to the Company from a driver as revenue, and not the gross amount collected from the passenger. The Company determined that it is not primarily responsible for the services since it does not promise the transportation services, does not contract with drivers to provide transportation services on the Company’s behalf, does not control whether the driver accepts or declines the transportation request via the Lyft Platform, and does not control the provision of transportation services by drivers to passengers at any point in time either before, during or after the ride. The Company applied the following steps to achieve the core principle of ASC 606: 1. Identification of the Contract, or Contracts, with a Customer: The Company considered the ToS and its customary business practices in identifying the contracts under ASC 606. Drivers accept the ToS with Lyft to use the App. The ToS defines the fees the Company charges drivers for each transaction, each party’s rights and obligations regarding the services to be transferred and payment terms. The driver agrees to perform the transportation service as requested by the passenger upon acceptance of a passenger’s request for a ride via the App. As the Company’s customary business practice, a contract exists between the driver and the Company when the driver’s ability to cancel the ride lapses, which typically is upon pickup of the passenger. The duration of a contract with a customer is typically equal to the duration of a single ride. The Company does not earn any fees from the passengers to access the App and the Company has no obligation to the passengers to provide the ride. The Company collects the fare and related charges from passengers on behalf of drivers using the passenger’s pre-authorized credit card or other payment mechanism and retains its fees before making the remaining disbursement to drivers; thus the driver’s ability and intent to pay is not subject to significant judgment. 2. Identification of the Performance Obligations in the Contract: The Company provides a service to drivers to complete a successful transportation service for passengers. The service includes on-demand lead generation that assists drivers to find, receive and fulfill on-demand requests from passengers seeking transportation services and related collection activities using the Lyft Platform. These activities are not distinct from each other and are not separate performance obligations. As a result, the Company’s single performance obligation in the transaction is to connect drivers with passengers to facilitate the completion of a successful transportation service for passengers. 3. Determination of the Transaction Price: The Company earns fees from the drivers either as the difference between an amount paid by a passenger based on an up-front quoted fare and the amount earned by a driver based on actual time and distance for the ride or as a fixed percentage of the fare charged to the passenger. In an up-front quoted fare arrangement, as the Company does not control the driver’s actions at any point in the transaction to limit the time and distance for the ride, the Company takes on risks related to the driver’s actions which may not be fully mitigated. The Company earns a variable amount from the drivers and may record a loss from a transaction, which is recorded as a reduction to revenue, in instances where an up-front quoted fare offered to a passenger is less than the amount the Company is committed to pay the driver. The Company records certain payments to drivers, such as refunds and ride incentives, as variable consideration which results in a reduction to the fee earned by the Company at the time such payments are earned by the driver. Taxes, municipal and airport fees assessed by governmental authorities that are both imposed on and are concurrent with specific revenue producing transactions, and collected from drivers and passengers, are excluded from the transaction price. Such amounts are not included as a component of revenue or cost of revenue. The Company has no significant financing components with customers and did not utilize the practical expedient under ASC 606-10-32-18. 4. Allocation of the Transaction Price to the Performance Obligations in the Contract: The Company’s single performance obligation in the transaction is to connect drivers with passengers to facilitate the completion of a successful transportation service for passengers. As a result, there is no allocation of the transaction price. 5. Recognition of Revenue when, or as, the Company Satisfies a Performance Obligation: Revenue is recognized at the time the performance obligation is satisfied by transferring the control of the promised service to a customer in an amount that reflects the consideration that the Company expects to receive in exchange for the service. The Company recognizes revenue upon completion of a ride as its performance obligation is satisfied upon the completion of the ride. The Company does not have contract assets or contract liabilities as the payment of the transaction price is concurrent with the fulfillment of the services. At the time of ride completion, the Company has the right to receive payment for the services rendered. Accordingly, there are no partially satisfied or unsatisfied performance obligations as of December 31, 2019 and 2018. As part of the adoption of ASC 606, the Company evaluated the use of practical expedients as required under the standard. New driver referral bonuses paid are contingent upon a new driver completing a certain number of rides and represent the incremental cost of obtaining a contract with a customer. The Company applied the practical expedient under ASC 606-10-45-1 and expenses new driver referral bonuses as sales and marketing expense when the referral bonuses are earned because the amortization period would be one year or less. The Company has no significant financing components with customers and did not utilize the practical expedient under ASC 606-10-32-18. Express Drive Program Revenue Under the Express Drive program, the Company connects drivers who need access to a car with third-party rental car companies. The Company facilitates car rental transactions between car rental companies and drivers. During 2018, the Company expanded its Express Drive program with Flexdrive , a third-party rental car provider. Under the Company’s agreement with Flexdrive (the “head lease”), the Company is required to pay fleet operating costs over periods ranging from two Flexdrive are charged rental fees which the Company collects from the driver. The Company collects rental fees by deducting such amounts from the driver’s earnings on the Lyft Platform, or through charging the driver’s credit card. The Company is a principal in car rental transactions involving Flexdrive as the Company becomes a lessee for each vehicle prior to its rental by a driver and is committed to the payment of fixed monthly amounts and other fleet operating costs. The Company subleases the vehicles to drivers when they are rented by drivers and, as a result, the Company considers itself to be the accounting sublessor in its arrangements with drivers. Vehicle leases with Flexdrive are classified as operating leases and, accordingly, each sublease representing a car rental transaction with a driver is also an operating lease. Sublease income (revenue) and head lease expense for the Company’s transactions involving Flexdrive are recognized on a gross basis in the consolidated financial statements. The revenue recognized for the years ended December 31, 2019 and 2018 under the Flexdrive program was $111.3 million and $54.8 million, respectively. Revenue from the Express Drive program was not material for the year ended December 31, 2017. In February 2020, the Company signed and closed the acquisition of Flexdrive . Refer to Note 16 “ Subsequent Events ” to our consolidated financial statements for information regarding this acquisition. Incentive Programs The Company offers incentives to attract drivers, passengers and riders of shared bikes and scooters (“Light Vehicle renters”) to use the Lyft Platform. Drivers generally receive cash incentives while passengers and Light Vehicle renters generally receive free or discounted rides under such incentive programs. Incentives provided to drivers and Light Vehicle renters, the customers of the Company, are accounted for as a reduction of the transaction price. As the passengers are not the Company’s customers, incentives provided to passengers are generally recognized as sales and marketing expense except for certain pricing programs described below. Driver Incentives The Company offers various incentive programs to drivers, including minimum guaranteed payments, volume-based discounts and performance-based bonus payments. These driver incentives are similar to retrospective volume-based rebates and represent variable consideration that is typically settled within a week. The Company reduces the transaction price by the estimated amount of the incentives expected to be paid upon completion of the performance criteria by applying the most likely outcome method. Therefore, such driver incentives are recorded as a reduction to revenue. Driver incentives are recorded as a reduction to revenue if the Company does not receive a distinct good or service in exchange for the payment or cannot reasonably estimate the fair value of the good or service received. Driver incentives for referring new drivers or passengers are accounted for as sales and marketing expense. The amount recorded as an expense is the lesser of the amount of the payment or the established fair value of the benefit received. The fair value of the benefit is established using amounts paid to third parties for similar services. Passenger Incentives The Company has several passenger incentive programs, which are offered to encourage passenger activity on the Lyft Platform. Generally, the passenger incentive programs are as follows: (i) Market-wide marketing promotions and discounts on shared rides. Market-wide promotions reduce the fare charged by drivers to passengers for all or substantially all rides in a specific market. This type of incentive effectively reduces the overall pricing of the service provided by drivers for that specific market and the gross fare charged by the driver to the passenger, and thereby results in a lower fee earned by the Company. In addition, discounted pricing on shared rides may result in a reduced fee earned by the Company. Accordingly, the Company records these types of incentives as a reduction to revenue at the date it records the corresponding revenue transaction. (ii) Targeted marketing promotions. Targeted marketing promotions are used in newly launched markets but may also be used in mature markets from time to time. An example of a promotion is when the Company offers a number of discounted rides (capped at a given number of rides) which are valid only during a limited period of time to a targeted group of occasional passengers. The Company believes that the incentives that provide consideration to passengers to be applied to a limited number of rides are similar to marketing coupons. These incentives differ from the market-wide marketing promotions because they do not reduce the overall pricing from the service provided by drivers for a specific market. The intent of these incentives is to promote the use of the Lyft Platform to the targeted group of passengers. During the promotion period, passengers not utilizing an incentive would be charged the full fare. These incentives represent marketing costs. When a passenger redeems the incentive, the Company recognizes revenue equal to the transaction price and the cost of the incentive is recorded as sales and marketing expense. (iii) Passenger referral programs. Under the passenger referral program, the referring passenger (the referrer) earns referral coupons when a new passenger (the referee) completes their first ride on the Lyft Platform. The Company records the incentive as a liability at the time the incentive is earned by the referrer with the corresponding charge recorded to sales and marketing expense. Referral coupons typically expire within one year. The Company estimates breakage using its historical experience. As of December 31, 2019 and 2018 the passenger referral coupon liability was not material. Light Vehicle Renter Incentives Incentives offered to Light Vehicle renters to access the Company’s network of shared bikes and scooters were not material for the years ended December 31, 2019 and 2018. For the years ended December 31, 2019, 2018 and 2017, in relation to the driver, passenger and Light Vehicle renter incentive programs, the Company recorded $560.3 million, $555.4 million and $383.9 million as a reduction to revenue and $381.5 million, $299.2 million and $155.6 million as sales and marketing expense, respectively. Refunds From time to time the Company issues credits or refunds to passengers unsatisfied by the level of service provided by the driver. There is no legal obligation to remunerate such passengers nor does the Company issue such credits or refunds to passengers on behalf of the drivers. The Company accounts for credits or refunds, which are not recoverable from the drivers as sales and marketing expenses when incurred. For the years ended December 31, 2019, 2018 and 2017, passenger refunds were $33.9 million, $41.8 million and $26.4 million, respectively. The credits and refunds for Light Vehicle renters were not material for the years ended December 31, 2019 and 2018. Cost of Revenue Cost of revenue primarily consists of insurance costs that are generally required under TNC and city regulations for ridesharing and Light Vehicle rentals, respectively, payment processing charges, including merchant fees, chargebacks and failed charges, hosting and platform-related technology costs, certain direct costs related to Light Vehicles, the Flexdrive program, personnel-related compensation costs and amortization of technology related intangible assets. Operations and Support Operations and support expenses primarily consist of personnel-related compensation costs of local operations teams and teams who provide phone, email and chat support to passengers, drivers and Light Vehicle renters, driver background checks and onboarding costs, fees paid to third parties providing operations support and Express Drive program support costs. Research and Development Research and development expenses primarily consist of personnel-related compensation costs and facilities costs. Such expenses include costs related to the Company’s autonomous vehicle technology initiatives. Research and development costs are expensed as incurred. Sales and Marketing Sales and marketing expenses primarily consist of passenger incentives and refunds, driver incentives for referring new drivers or passengers, personnel-related compensation costs, advertising expenses, passenger refunds and marketing partnerships with third parties. Sales and marketing costs are expensed as incurred. Advertising expenses were $188.3 million, $352.3 million and $315.6 million, respectively, for the years ended December 31, 2019, 2018 and 2017. General and Administrative General and administrative expenses primarily consist of personnel-related compensation costs, certain insurance costs that are generally not required under TNC regulations, professional services fees, certain loss contingency expenses including legal accruals and settlements, claims administrative fees, facility costs, and other corporate costs. General and administrative expenses are expensed as incurred. Stock-Based Compensation The Company incurs stock-based compensation expense primarily from RSUs, stock options, and ESPP purchase rights. The Company estimates the fair value of stock options granted to employees, directors, and consultants and ESPP purchase rights using the Black-Scholes option-pricing model. The Black-Scholes model considers several variables and assumptions in estimating the fair value of stock-based awards. These variables include: • per share fair value of the underlying common stock; • exercise price; • expected term; • risk-free interest rate; • expected annual dividend yield; and • expected stock price volatility over the expected term. The Company estimates the expected term for stock options using the simplified method for “plain vanilla” stock option awards. The expected term of the ESPP purchase rights is estimated using the period from the beginning of the offering period to the end of each purchase period. Since the Company has limited history as a public company and does not yet have sufficient trading history for the Company's common stock, the Company estimates volatility for stock options and ESPP purchase rights using the historical volatility of the stock price of similar publicly traded peer companies. The risk-free interest rate is based on the yield available on U.S. Treasury zero-coupon issues similar in duration to the expected term of the stock options or ESPP purchase rights granted. The fair value of stock options that are expected to vest is recognized as compensation expense on a straight-line basis over the requisite service period. The Company recognizes compensation expense related to the ESPP purchase rights on a straight-line basis over the offering period, which is typically 12 months. The fair value of RSUs is estimated based on the fair market value of the Company’s common stock on the date of grant, which subsequent to the IPO is determined based on the closing price of the Company’s Class A common stock as reported on the date of grant. Prior to the IPO, the Company granted RSUs which vest upon the satisfaction of both a service condition and a performance condition. Compensation expense for RSUs with service and performance conditions is amortized on a graded basis over the requisite service period as long as the performance condition in the form of a specified liquidity event is probable to occur. The liquidity event condition was satisfied upon the effectiveness of the IPO Registration Statement on March 28, 2019. On that date the Company recorded a cumulative stock-based compensation expense of $857.2 million using the accelerated attribution method for the RSUs for which the service condition was satisfied as of March 28, 2019. The remaining unrecognized stock-based compensation expense related to these RSUs is recorded over their remaining requisite service periods. The compensation expense for RSUs granted after March 28, 2019, which vest upon satisfaction of a service-based condition only, is recognized on a straight-line basis over the requisite service period. Stock-based compensation expense is based on awards ultimately expected to vest and reflects estimated forfeitures. Forfeitures are estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from initial estimates. Income Taxes The Company accounts for income taxes using the asset and liability method. Under this method, deferred income tax assets and liabilities are recorded based on the estimated future tax effects of differences between the financial statement and income tax basis of existing assets and liabilities. These differences are measured using the enacted statutory tax rates that are expected to apply to taxable income for the years in which differences are expected to reverse. The Company recognizes the effect on deferred income taxes of a change in tax rates in the period that includes the enactment date. The Company records a valuation allowance to reduce its deferred tax assets to the net amount that it believes is more-likely-than-not to be realized. Management considers all available evidence, both positive and negative, including historical levels of income, expectations and risks associated with estimates of future taxable income and ongoing tax planning strategies in assessing the need for a valuation allowance. Under the provisions of ASC 740-10, Income Taxes, the Company evaluates uncertain tax positions by reviewing against applicable tax law for all positions taken by the Company with respect to tax years for which the statute of limitations is still open. ASC 740-10 provides that a tax benefit from an uncertain tax position may be recognized when it is more likely than not that the position will be sustained upon examination, including resolutions of any related appeals or litigation processes, based on the technical merits. The Company recognizes interest and penalties related to the liability for unrecognized tax benefits, if any, as a component of the income tax expense line in the accompanying consolidated statement of operations. Business Combinations The Company accounts for its business combinations using the acquisition method of accounting, which requires, among other things, allocation of the fair value of purchase consideration to the tangible and intangible assets acquired and liabilities assumed at their estimated fair values on the acquisition date. The excess of the fair value of purchase consideration over the values of these identifiable assets and liabilities is recorded as goodwill. When determining the fair value of assets acquired and liabilities assumed, management makes significant estimates and assumptions, especially with respect to intangible assets. Management’s estimates of fair value are based upon assumptions believed to be reasonable, but which are inherently uncertain and unpredictable and, as a result, actual results may differ from estimates. During the measurement period, not to exceed one year from the date of acquisition, the Company may record adjustments to the assets acquired and liabilities assumed, with a corresponding offset to goodwill if new information is obtained related to facts and circumstances that existed as of the acquisition date. After the measurement period, any subsequent adjustments are reflected in the consolidated statements of operations and comprehensive loss. Acquisition costs, such as legal and consulting fees, are expensed as incurred. Cash and Cash Equivalents Cash equivalents consist of institutional money market funds and certificates of deposits denominated in U.S. dollars as well as commercial paper and corporate bonds. Cash equivalents are highly liquid, short-term investments having an original maturity of 90 days or less that are readily convertible to known amounts of cash. Also included in cash and cash equivalents are cash in transit from payment processors for credit and debit card transactions, which was immaterial as of each of December 31, 2019 and 2018, and money market deposit accounts that are stated at cost, which approximate fair value. Restricted Cash and Cash Equivalents Restricted cash and cash equivalents consist primarily of amounts held in separate trust accounts and restricted bank accounts as collateral for insurance purposes and amounts pledged to secure certain letters of credit. Short-Term Investments The Company holds short-term investments in commercial paper, certificates of deposit, and corporate bonds, which mature in twelve months or less. The Company considers its investments as available to support its current operations. As a result, the Company classifies its investments as current assets in the accompanying consolidated balance sheets. The Company classifies these securities as “available-for-sale” and carries them at fair value on the consolidated balance sheets. Unrealized gains or losses are recorded, net of estimated taxes, in accumulated other comprehensive income (loss), a component of stockholders’ equity (deficit). Realized gains and losses are recognized upon sale. The specific identification method is used to determine the cost basis of fixed income securities sold. As of December 31, 2019 and 2018, accumulated other comprehensive income primarily relates to unrealized gains and losses on available-for-sale investments, net of estimated taxes. The Company’s short-term investments also include certain term deposits that are stated at cost, which approximate fair value. The Company periodically evaluates its investments for impairment due to declines in market value considered to be “other-than-temporary.” This evaluation consists of several qualitative and quantitative factors, including the Company’s ability and intent to hold the investment until a forecasted recovery occurs, as well as any decline in the investment quality of the security and the severity and duration of the unrealized loss. In the event of a determination that a decline in market value is other-than-temporary, the Company will recognize an impairment loss, and a new cost basis in the investment will be established. To date, the Company has not recorded any impairment related to its investments in its consolidated statements of operations. Restricted Investments The Company’s contracts with insurance providers require reinsurance premiums to be deposited into trust accounts with a third-party financial institution from which the insurance providers are reimbursed for claim payments. Restricted reinsurance trust investments as of December 31, 2019 and 2018 were $1.4 billion and $0.9 billion, respectively. Concentrations of Credit Risk The Company’s cash, cash equivalents and short-term investments are potentially subject to concentration of credit risk. Although the Company deposits its cash with multiple financial institutions, the deposits, at times, may exceed federally insured limits. The Company has not experienced any losses on its deposits of cash and cash equivalents. Management believes that the institutions are financially stable and, accordingly, minimal credit risk exists. The Company limits purchases of debt securities to investment-grade securities. Fair Value Measurements The Company measures assets and liabilities at fair value based on an expected exit price, which represents the amount that would be received on the sale of an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value may be based on assumptions that market participants would use in pricing an asset or liability. The authoritative guidance on fair value measurements establishes a consistent framework for measuring fair value on either a recurring or nonrecurring basis, whereby inputs used in valuation techniques, are assigned a hierarchical level. The following are the hierarchical levels of inputs to measure fair value: Level 1 Observable inputs that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets. Level 2 Inputs reflect quoted prices for identical assets or liabilities in markets that are not active; quoted prices for similar assets or liabilities in active markets; inputs other than quoted prices that are observable for the assets or liabilities; or inputs that are derived principally from or corroborated by observable market data by correlation or other means. Level 3 Unobservable inputs reflecting our own assumptions incorporated in valuation techniques used to determine fair value. These assumptions are required to be consistent with market participant assumptions that are reasonably available. The carrying values of the Company’s accounts payable and accrued and other liabilities approximate their respective fair

Acquisitions

Acquisitions	12 Months Ended
Acquisitions	Dec. 31, 2019
Business Combinations [Abstract]
Acquisitions	Acquisitions Acquisition of Bikeshare Holdings LLC (“Motivate”) On November 30, 2018 (the “Closing Date”), the Company completed its acquisition of Motivate, a New York-headquartered bikeshare company, for cash consideration of $250.9 million. The purpose of the acquisition is to establish a solid foothold in the bikeshare market and offer access to new transportation options on the Lyft Platform. Acquisition costs of $2.6 million were expensed as incurred and are included in general and administrative expenses in the consolidated statement of operations for the year ended December 31, 2018. In connection with the acquisition of Motivate, the Company recognized identifiable assets and assumed liabilities based on their respective fair values at the Closing Date. The following table summarizes the fair value of the assets acquired and liabilities assumed (in thousands): Cash and cash equivalents $ 7,248 Prepaid expenses and other assets 20,458 Property and equipment 68,312 Identifiable intangible assets 89,800 Total identifiable assets acquired 185,818 Total liabilities assumed 53,357 Net assets acquired 132,461 Goodwill 118,474 Total acquisition consideration $ 250,935 Goodwill represents the excess of the total purchase consideration over the fair value of the underlying assets acquired and liabilities assumed. Goodwill is attributable to expected synergies and monetization opportunities from the expanded platform as well as planned growth in new markets expected to be achieved from the combined operations of the Company and Motivate. The acquisition is considered to be an asset acquisition for tax purposes and goodwill recognized in the acquisition is not deductible for tax purposes. During the fourth quarter of 2019, the Company recorded immaterial measurement period adjustments. The offset of these adjustments were recorded as a decrease to "Goodwill." An assessment of the fair value of identified intangible assets and their respective useful lives are as follows: Fair Value Estimated Useful Contractual relationships – cities $ 61,100 3-12 User relationships 18,700 3 Developed technology 10,000 1 Total intangible assets $ 89,800 The fair value of the contractual relationships – cities was determined using the income approach. In the income approach, the fair value of an asset is based on the expected receipt of future economic benefits such as earnings and cash inflows from current sales projections and estimated costs over the estimated contractual relationship period which varies from three The fair value of the user relationships and developed technology was determined using the replacement cost approach. In the replacement cost approach, the fair value of an asset is based on the cost of a market participant to reconstruct a substitute asset of comparable utility, adjusted for any obsolescence. The fair value of the asset would include the seller’s expected profit margin in the market and any opportunity costs lost over the period to reconstruct the substitute asset. For the years ended December 31, 2019 and 2018, Motivate revenue and net loss included in the Company’s consolidated statement of operations were not material. Over the approximately five years following the transaction, the Company committed to invest an aggregate of $100 million in the bikeshare program for the New York metro area. The Company also assumed certain pre-existing contractual obligations to increase the bike fleets in other locations, which are not considered to be material. Other Acquisitions In the fourth quarter of 2018, the Company completed two additional business combinations in exchange for cash of $35.0 million, redeemable convertible preferred stock of $25.3 million and a liability of $1.7 million related to indemnification aggregating to a total consideration of approximately $62.0 million which are not material to the consolidated financial statements. In the fourth quarter of 2019, the Company completed two business combinations which are not material to the consolidated financial statements. Pro forma results of operations have not been presented because the effects of the acquisitions were not material to the Company’s consolidated financial statements.

Goodwill and Intangible Assets,

Goodwill and Intangible Assets, Net	12 Months Ended
Goodwill and Intangible Assets, Net	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets, Net	Goodwill and Intangible Assets, Net The changes in the carrying amount of goodwill for the years ended December 31, 2019 and 2018 were as follows (in thousands): Balance as of January 1, 2018 $ — Additions 152,085 Balance as of December 31, 2018 $ 152,085 Additions 10,947 Foreign currency translation and other adjustments (4,307) Balance as of December 31, 2019 $ 158,725 Intangible assets, net consisted of the following as of the dates indicated (in thousands): December 31, 2019 Weighted-average Gross Carrying Accumulated Net Carrying Developed technology and patents 1.6 $ 42,887 $ 26,309 $ 16,578 Contractual relationship – cities and user relationships 7.7 79,800 13,459 66,341 Total intangible assets $ 122,687 $ 39,768 $ 82,919 December 31, 2018 Weighted-average Gross Carrying Accumulated Net Carrying Developed technology and patents 2.6 $ 42,887 $ 3,924 $ 38,963 Contractual relationship – cities and user relationships 8.7 79,800 1,030 78,770 Total intangible assets $ 122,687 $ 4,954 $ 117,733 Amortization expense was $35.1 million and $4.8 million for the years ended December 31, 2019 and 2018, respectively. As of December 31, 2019, future amortization of intangible assets that will be recorded in cost of revenue and operating expenses is estimated as follows (in thousands). Year ended December 31: 2020 $ 24,673 2021 12,589 2022 6,442 2023 5,639 2024 5,639 Thereafter 27,937 Total remaining amortization $ 82,919

Supplemental Financial Statemen

Supplemental Financial Statement Information	12 Months Ended
Supplemental Financial Statement Information	Dec. 31, 2019
Balance Sheet Components Disclosure [Abstract]
Supplemental Financial Statement Information	Supplemental Financial Statement Information Cash Equivalents and Short-Term Investments The following tables summarize the cost or amortized cost, gross unrealized gain, gross unrealized loss and fair value of the Company’s cash equivalents and short-term investments as of the dates indicated (in thousands): December 31, 2019 Cost or Unrealized Estimated Gains Losses Unrestricted Balances (1) Money market deposit accounts $ 217,523 $ — $ — $ 217,523 Term deposits 135,000 — — 135,000 Certificates of deposit 1,275,750 887 (43) 1,276,594 Commercial paper 876,382 181 (68) 876,495 Corporate bonds 247,359 219 — 247,578 Total unrestricted cash equivalents and short-term investments 2,752,014 1,287 (111) 2,753,190 Restricted Balances (2) Money market funds 19,250 — — 19,250 Money market deposit accounts 7,884 — — 7,884 Term deposits 7,811 — — 7,811 Certificates of deposit 608,578 262 (12) 608,828 Commercial paper 791,087 165 (97) 791,155 Corporate bonds 75,828 80 — 75,908 Total restricted cash equivalents and investments 1,510,438 507 (109) 1,510,836 Total unrestricted and restricted cash equivalents and investments $ 4,262,452 $ 1,794 $ (220) $ 4,264,026 _______________ (1) Excludes $96.9 million of cash, which is included within the $2.9 billion of cash and cash equivalents and short-term investments on the consolidated balance sheets. (2) Excludes $56.4 million of restricted cash, which is included within the $1.6 billion of restricted cash and cash equivalents and restricted short-term investments on the consolidated balance sheets. December 31, 2018 Cost or Unrealized Estimated Gains Losses Unrestricted Balances (1) Money market funds $ 38,528 $ — $ — $ 38,528 Certificates of deposit 497,748 19 (213) 497,554 Commercial paper 1,135,092 38 (409) 1,134,721 Corporate bonds 119,043 19 (23) 119,039 Total unrestricted cash equivalents and short-term investments 1,790,411 76 (645) 1,789,842 Restricted Balances (2) Money market funds 4,620 — — 4,620 Certificates of deposit 307,650 41 (87) 307,604 Commercial paper 624,719 17 (227) 624,509 Corporate bonds 65,616 6 (36) 65,586 Total restricted cash equivalents and investments 1,002,605 64 (350) 1,002,319 Total unrestricted and restricted cash equivalents and investments $ 2,793,016 $ 140 $ (995) $ 2,792,161 _______________ (1) Excludes $248.0 million of cash, which is included within the $2.0 billion of cash and cash equivalents and short-term investments on the consolidated balance sheets. (2) Excludes $50.2 million of restricted cash, which is included within the $1.1 billion of restricted cash and cash equivalents and restricted short-term investments on the consolidated balance sheets. The weighted-average remaining maturity of the Company’s investment portfolio was less than one year as of the periods presented. No individual security incurred continuous unrealized losses for greater than 12 months. Property and Equipment, net Property and equipment, net consisted of the following as of the dates indicated (in thousands): December 31, 2019 2018 Bike fleet $ 124,380 $ 65,985 Leasehold improvements 66,490 39,727 Computer equipment and software 14,026 11,366 Furniture and fixtures 473 262 Construction in progress 25,139 3,629 230,508 120,969 Less: Accumulated depreciation (41,905) (11,712) $ 188,603 $ 109,257 Depreciation expense related to property and equipment was $37.9 million, $8.6 million, and $2.5 million for the years ended December 31, 2019, 2018 and 2017, respectively. Accrued and Other Current Liabilities Accrued and other current liabilities consisted of the following as of the dates indicated (in thousands): December 31, 2019 2018 Ride-related accruals $ 253,840 $ 188,602 Insurance-related accruals 218,161 98,062 Legal accruals 162,766 81,139 Insurance claims payable and related fees 87,357 65,897 Other 217,741 172,503 $ 939,865 $ 606,203 Insurance Reserves The following table provides a rollforward of the insurance reserve for the periods presented (in thousands): Year Ended December 31, 2019 2018 2017 Beginning balance $ 810,273 $ 376,538 $ 131,951 Losses paid (540,627) (220,936) (91,499) Change in estimates for prior periods 219,163 3,392 — Reserves for current period 889,653 651,279 336,086 Ending balance $ 1,378,462 $ 810,273 $ 376,538

Fair Value Measurements

Fair Value Measurements	12 Months Ended
Fair Value Measurements	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The following tables set forth the Company’s financial instruments that were measured at fair value on a recurring basis as of the dates indicated by level within the fair value hierarchy (in thousands): December 31, 2019 Level 1 Level 2 Level 3 Total Unrestricted Balances (1) Certificates of deposit — 1,276,594 — 1,276,594 Commercial paper — 876,495 — 876,495 Corporate bonds — 247,578 — 247,578 Total unrestricted cash equivalents and short-term investments — 2,400,667 — 2,400,667 Restricted Balances (2) Money market funds 19,250 — — 19,250 Certificates of deposit — 608,828 — 608,828 Commercial paper — 791,155 — 791,155 Corporate bonds — 75,908 — 75,908 Total restricted cash equivalents and investments 19,250 1,475,891 — 1,495,141 Total unrestricted and restricted cash equivalents and investments $ 19,250 $ 3,876,558 $ — $ 3,895,808 _______________ (1) $96.9 million of cash, $217.5 million of money market deposit accounts and $135.0 million of term deposits are not subject to recurring fair value measurement and therefore excluded from this table. However, these balances are included within the $2.9 billion of cash and cash equivalents and short-term investments on the consolidated balance sheets. (2) $56.4 million of restricted cash, $7.9 million of a money market deposit account and $7.8 million of a restricted term deposit are not subject to recurring fair value measurement and therefore excluded from this table. However, these balances are included within the $1.6 billion of restricted cash and cash equivalents and restricted short-term investments on the consolidated balance sheets. December 31, 2018 Level 1 Level 2 Level 3 Total Unrestricted Balances (1) Money market funds $ 38,528 $ — $ — $ 38,528 Certificates of deposit — 497,554 — 497,554 Commercial paper — 1,134,721 — 1,134,721 Corporate bonds — 119,039 — 119,039 Total unrestricted cash equivalents and short-term investments 38,528 1,751,314 — 1,789,842 Restricted Balances (2) Money market funds 4,620 — — 4,620 Certificates of deposit — 307,604 — 307,604 Commercial paper — 624,509 — 624,509 Corporate bonds — 65,586 — 65,586 Total restricted cash equivalents and investments 4,620 997,699 — 1,002,319 Total unrestricted and restricted cash equivalents and investments $ 43,148 $ 2,749,013 $ — $ 2,792,161 _______________ (1) $248.0 million of cash is not subject to recurring fair value measurement and therefore excluded from this table. However, these balances are included within the $2.0 billion of cash and cash equivalents and short-term investments on the consolidated balance sheets. (2) $50.2 million of restricted cash is not subject to recurring fair value measurement and therefore excluded from this table. However, these balances are included within the $1.1 billion of restricted cash and cash equivalents and restricted short-term investments on the consolidated balance sheets. The fair value of the Company’s Level 1 financial instruments is based on quoted market prices for identical instruments. The fair value of the Company’s Level 2 financial instruments is obtained from an independent pricing service, which may use quoted market prices for identical or comparable instruments or model driven valuations using observable market data or inputs corroborated by observable market data.

Leases

Leases	12 Months Ended
Leases	Dec. 31, 2019
Leases [Abstract]
Leases	Leases Leases (Topic 842) and subsequently issued amendments require a lessee to recognize leases with a term greater than 12 months on the balance sheet. The Company adopted the standard using the modified retrospective approach with an effective date as of the beginning of the fiscal year, January 1, 2019. The comparative period presented is not adjusted and, therefore, those amounts are not presented below. The Company elected the package of transition provisions available for expired or existing contracts, which allowed the Company to carryforward the historical assessments of (1) whether contracts are or contain leases, (2) lease classification and (3) initial direct costs. The Company leases real estate property under operating leases. The Company is also a lessee and a sublessor from an accounting perspective in the car rental transactions involving Flexdrive. For leases with a term greater than 12 months, the Company records the related right-of-use asset and lease liability at the present value of lease payments over the term. The Company does not separate lease and non-lease components of contracts for real estate property leases. The Company’s leases do not provide a readily determinable implicit rate. Therefore, the Company estimates its incremental borrowing rate to discount the lease payments based on information available at lease commencement. The Company determines its incremental borrowing rate based on the rate of interest that the Company would have to pay to borrow on a collateralized basis over a similar term, an amount equal to the lease payments in a similar economic environment. Lease payments may be fixed or variable, however, only fixed payments are included in the Company’s lease liability calculation. Variable lease payments are recognized primarily in operating expenses in the period in which the obligation for those payments are incurred. Real Estate Operating Leases The Company leases real estate property at approximately 90 locations with 87 commenced leases and three not yet commenced leases having an initial term of 12 months or longer as of December 31, 2019. These leases are classified as operating leases. As of December 31, 2019, the remaining lease terms vary from one ten one Flexdrive Program Under the Express Drive program, the Company connects drivers who need access to a car with third-party rental car companies. The Company facilitates the car rental transactions between car rental companies and drivers. During 2018 the Company expanded its Express Drive program with Flexdrive . Under the Company’s agreement with Flexdrive (the “head lease”), the Company is required to pay fleet operating costs over periods ranging from two Flexdrive are charged rental fees for which the Company collects such payments from the driver. The Company collects rental fees by deducting such amounts from the driver’s earnings on the Lyft Platform, or through charging the driver’s credit card. The Company is a principal in the car rental transactions involving Flexdrive as the Company becomes a lessee for each vehicle prior to its rental by a driver and is committed to the payment of fixed monthly amounts and other fleet operating costs. The Company subleases the vehicles to drivers when they are rented by drivers and, as a result, the Company considers itself to be the accounting sublessor in its arrangements with drivers. Vehicle leases with Flexdrive are classified as operating leases and, accordingly, each sublease representing a car rental transaction with a driver is also an operating lease. The lease term in the car rental sublease is less than a month. Sublease income (revenue) and head lease expense for the Company’s transactions involving Flexdrive are recognized on a gross basis in the consolidated financial statements. The revenue recognized under the Flexdrive program was $111.3 million and $54.8 million for the years ended December 31, 2019 and 2018, respectively. Lease Position as of December 31, 2019 The table below presents the lease-related assets and liabilities recorded on the consolidated balance sheet (in thousands, except for remaining lease terms and percentages): December 31, 2019 Assets Real Estate $ 316,499 Flexdrive Program 124,759 Total operating lease right-of-use assets $ 441,258 Liabilities Current Real Estate $ 40,729 Flexdrive Program 53,470 Total current operating lease liabilities 94,199 Noncurrent Real Estate 312,323 Flexdrive Program 69,754 Total noncurrent operating lease liabilities 382,077 Total operating lease liabilities $ 476,276 Weighted-average remaining lease term (years) Real Estate 6.8 Flexdrive Program 1.9 Weighted-average discount rate (1) Real Estate 6.6 % Flexdrive Program 6.5 % _______________ (1) Upon adoption of the new lease standard, discount rates used for existing leases were established at January 1, 2019. Lease Costs The table below presents certain information related to the lease costs for operating leases for the year ended December 31, 2019 (in thousands): December 31, 2019 Real Estate Flexdrive Total Operating lease cost $ 61,277 $ 54,142 $ 115,419 Short-term lease cost 4,670 — 4,670 Variable lease cost (1) 10,845 5,815 16,660 Total lease cost $ 76,792 $ 59,957 $ 136,749 _______________ (1) Consist primarily of common-area maintenance, taxes and utilities for real estate leases, and certain vehicle related charges under the Flexdrive program. Cash paid for amounts included in the measurement of operating lease liabilities was $111.1 million for the year ended December 31, 2019 and is presented as cash flows from operating activities in the consolidated statement of cash flows. Rent expense related to noncancelable real estate operating leases was $33.7 million and $22.8 million during the years ended December 31, 2018 and 2017, respectively. Sublease income was immaterial. Undiscounted Cash Flows The table below reconciles the undiscounted cash flows for each of the first five years and total of the remaining years to the lease liabilities recorded on the consolidated balance sheet as of December 31, 2019 (in thousands): Real Estate Flexdrive Total Leases 2020 $ 70,308 $ 55,661 $ 125,969 2021 76,681 49,968 126,649 2022 71,104 27,357 98,461 2023 55,147 743 55,890 2024 50,613 — 50,613 Thereafter 134,210 — 134,210 Total minimum lease payments 458,063 133,729 591,792 Less: amount of lease payments representing interest (105,011) (10,505) (115,516) Present value of future minimum lease payments 353,052 123,224 476,276 Less: current obligations under leases (40,729) (53,470) (94,199) Long-term lease obligations $ 312,323 $ 69,754 $ 382,077 As of December 31, 2019, the Company had an immaterial amount of real estate leases that had not yet commenced. These leases are expected to commence between February and June 2020 with lease terms of five seven Future lease payments receivable in car rental transactions under the Flexdrive Program are not material since the lease term is less than a month. As of December 31, 2018, the future minimum lease payments required under noncancelable operating leases as defined under the previous accounting guidance of ASC Topic 840 were as follows (in thousands): Real Estate Flexdrive Program Total 2019 $ 51,221 $ 30,129 $ 81,350 2020 53,380 34,597 87,977 2021 52,794 6,439 59,233 2022 48,813 — 48,813 2023 and Thereafter 133,670 — 133,670 Total minimum lease payments $ 339,878 $ 71,165 $ 411,043

Commitment and Contingencies

Commitment and Contingencies	12 Months Ended
Commitment and Contingencies	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Noncancelable Purchase Commitments In March 2018, the Company entered into a noncancelable arrangement with a web-hosting services provider under which the Company had an obligation to purchase a minimum of $150 million worth of services from this vendor through June 2021. In January 2019, the parties modified the aggregate commitment amounts and timing. Under the amended arrangement, the Company committed to spend an aggregate of at least $300 million between January 2019 and December 2021, with a minimum amount of $80 million in each of the three years, on services with this vendor. The Company has made payments totaling $116.5 million under the amended arrangement as of December 31, 2019. In May 2019, the Company entered into a noncancelable arrangement with the City of Chicago, with respect to the Divvy bike share program, under which the Company has an obligation to pay approximately $7.5 million per year to the City of Chicago through January 2028 and to spend a minimum of $50 million on capital equipment for the bike share program through January 2023. The Company has made payments totaling $18.2 million as of December 31, 2019. As of December 31, 2019, the future minimum payments under the Company’s noncancelable purchase commitments were as follows (in thousands) (1 ) : 2020 $ 87,740 2021 111,515 2022 39,526 2023 16,519 2024 8,800 Thereafter 28,199 Total future minimum payments $ 292,299 _______________ (1) On November 30, 2018, the Company completed its acquisition of Motivate, a New York headquartered bikeshare company. Over the approximately five years following the transaction, the Company committed to invest an aggregate of $100 million in the bikeshare program for the New York metro area. The Company also assumed certain pre-existing contractual obligations to increase the bike fleets in other locations which are not considered to be material. Due to the uncertainty with respect to the timing of future cash flows associated with these commitments, the Company has not included these commitments in the above table. Letters of Credit The Company maintains certain stand-by letters of credit from third-party financial institutions in the ordinary course of business to guarantee certain performance obligations related to leases, insurance policies and other various contractual arrangements. The outstanding letters of credit are collateralized by cash. As of December 31, 2019 and 2018, the Company had letters of credit outstanding of $55.2 million and $48.8 million, respectively. Legal Proceedings The Company is currently involved in, and may in the future be involved in, legal proceedings, claims, regulatory inquiries, and governmental investigations in the ordinary course of business, including suits by drivers, passengers, or third parties (individually or as class actions) alleging, among other things, various wage- and expense-related claims, violations of state or federal laws, improper disclosure of the Company’s fees, rules or policies, that such fees, rules or policies violate applicable law, or that the Company has not acted in conformity with such fees, rules or policies, as well as proceedings related to product liability, its acquisitions, securities issuances or business practices, or public disclosures about the business. In addition, the Company has been, and is currently, named as a defendant in a number of litigation matters related to accidents or other trust and safety incidents involving drivers or passengers using the Lyft Platform. The outcomes of the Company’s legal proceedings are inherently unpredictable and subject to significant uncertainties. For some matters for which a material loss is reasonably possible, an estimate of the amount of loss or range of losses is not possible nor is the Company able to estimate the loss or range of losses that could potentially result from the application of nonmonetary remedies. Until the final resolution of legal matters, there may be an exposure to a material loss in excess of the amount recorded. Indemnification The Company enters into indemnification provisions under agreements with other parties in the ordinary course of business, including certain business partners, investors, contractors and the Company’s officers, directors and certain employees. The Company has agreed to indemnify and defend the indemnified party’s claims and related losses suffered or incurred by the indemnified party resulting from actual or threatened third-party claims because of the Company’s activities or, in some cases, non-compliance with certain representations and warranties made by the Company. It is not possible to determine the maximum potential loss under these indemnification provisions due to the Company’s limited history of prior indemnification claims and the unique facts and circumstances involved in each particular provision. To date, losses recorded in the Company’s consolidated statements of operations in connection with the indemnification provisions have not been material. Independent Contractor Classification Matters With regard to independent contractor classification of drivers on the Lyft Platform, the Company is regularly subject to claims, lawsuits, arbitration proceedings, administrative actions, government investigations and other legal and regulatory proceedings at the federal, state and municipal levels challenging the classification of these drivers as independent contractors, and claims that, by the alleged misclassification, the Company has violated various labor and other laws that would apply to driver employees. Laws and regulations that govern the status and classification of independent contractors are subject to change and divergent interpretations by various authorities, which can create uncertainty and unpredictability for the Company. For example, a new law in California, known as Assembly Bill 5, codifies and extends an employment classification test set forth by the California Supreme Court that established a new standard for determining employee or independent contractor status. The passage of this bill has led and could continue to lead to additional challenges to the independent contractor classification of drivers using the Lyft Platform. Such regulatory scrutiny or action may create different or conflicting obligations from one jurisdiction to another. The Company is currently involved in a number of putative class actions, individual claims both in court as well as arbitration, matters brought, in whole or in part, as representative actions under California’s Private Attorney General Act, Labor Code Section 2698, et seq., alleging that the Company misclassified drivers as independent contractors and other matters challenging the classification of drivers on the Company’s platform as independent contractors. The Company is also in the process of responding to an inquiry from the California Public Utilities Commission regarding driver classification and Assembly Bill 5. The Company disputes any allegations of wrongdoing and intends to continue to defend itself vigorously in these matters. However, results of litigation, arbitration and regulatory actions are inherently unpredictable and legal proceedings related to these driver claims, individually or in the aggregate, could have a material impact on the Company’s business, financial condition and results of operations. Regardless of the outcome, litigation and arbitration of these matters can have an adverse impact on the Company because of defense and settlement costs individually and in the aggregate, diversion of management resources and other factors. In the ordinary course of business, various drivers have challenged, and may challenge in the future, their classification on the Lyft platform as an independent contractor under federal and state law, seeking monetary, injunctive, or other relief. The Company is currently involved in a number of such actions filed by individual drivers, including those brought in, or compelled pursuant to the Company’s Terms of Service to, individual arbitration. The Company believes it has meritorious defenses, dispute the allegations of wrongdoing and intend to defend itself vigorously in these matters. There is no such pending or threatened matter that individually, in the Company’s opinion, is likely to have a material impact on the Company’s business, financial condition or results of operations; however, results of litigation and arbitration are inherently unpredictable and legal proceedings related to these driver claims, individually or in the aggregate, could have a material impact on our business, financial condition and results of operations. Regardless of the outcome, litigation and arbitration of these matters can have an adverse impact on the Company because of defense and settlement costs individually and in the aggregate, diversion of management resources and other factors. The Company is also involved in administrative audits related to driver classification in California, Connecticut, Oregon, Wisconsin, Illinois and New Jersey. These audits relate to the Company’s alleged obligation to provide unemployment insurance benefits to drivers under state law. The Company disputes that it is obligated to provide such benefits under state law and these proceedings are ongoing. Unemployment Insurance Assessment In January 2017, the Company received a notice from a certain state unemployment insurance agency of an initial determination that, during the audit period beginning October 1, 2011 through December 31, 2014, the drivers who utilized the Lyft Platform during the audit period were the Company’s employees for unemployment insurance purposes. As part of that determination, the Company received an assessment for amounts purportedly due of approximately $9.5 million. The Company submitted a petition for reassessment and appealed the determination which has not yet gone to hearing. After abating personal income tax from the assessment, the amount assessed against the Company is approximately $6.6 million as of December 31, 2019. The Company believes that the independent contractors were properly classified and plans to vigorously contest the determination. Accordingly, the Company did not record any amount related to this assessment in its consolidated statements of operations. Indirect Taxes The Company is under audit by various domestic tax authorities with regard to indirect tax matters. The subject matter of indirect tax audits primarily arises from disputes on tax treatment and tax rates applied to the sale of the Company’s services in these jurisdictions. The Company accrues indirect taxes that may result from examinations by, or any negotiated agreements with, these tax authorities when a loss is probable and reasonably estimable and the expense is recorded to general and administrative expenses. Patent Litigation The Company is currently involved in legal proceedings related to alleged infringement of patents and other intellectual property and, in the ordinary course of business, the Company receives correspondence from other purported holders of patents and other intellectual property offering to license such property and/or asserting infringement of such property. The Company disputes any allegation of wrongdoing and intend to defend the Company vigorously in these matters. Consumer and Other Class Actions The Company is involved in a number of class actions alleging violations of consumer protection laws such as the TCPA as well as violations of other laws such as the Americans with Disabilities Act, or the ADA. The Company disputes any allegations of wrongdoing and intend to continue to defend ourselves vigorously in these matters. Personal Injury and Other Safety Matters In the ordinary course of the Company’s business, various parties have from time to time claimed, and may claim in the future, that the Company is liable for damages related to accidents or other incidents involving drivers or riders using or who have used services offered on the Lyft platform, as well as from third parties. The Company is currently named as a defendant in a number of matters related to accidents or other incidents involving drivers on the Lyft platform, other riders and third parties. The Company believes it has meritorious defenses, dispute the allegations of wrongdoing and intend to defend itself vigorously. There is no pending or threatened legal proceeding that has arisen from these accidents or incidents that individually, in the Company’s opinion, is likely to have a material impact on its business, financial condition or results of operations; however, results of litigation and claims are inherently unpredictable and legal proceedings related to such accidents or incidents, in the aggregate, could have a material impact on the Company’s business, financial condition and results of operations. For example, on January 17, 2020, the Superior Court of California, County of Los Angeles, granted the petition of multiple plaintiffs to coordinate their claims relating to alleged sexual assault or harassment by drivers on the Lyft Platform. Regardless of the outcome, litigation can have an adverse impact on the Company because of defense and settlement costs individually and in the aggregate, diversion of management resources and other factors. Securities Litigation Beginning in April 2019, several putative class actions were filed in California state and federal court against the Company, its directors, certain of its officers, and certain of the underwriters named in the IPO Registration Statement alleging violation of securities laws in connection with the IPO. These cases have been consolidated into two putative class actions, one in California state court and the other in federal court. The Company filed its demurrer to the consolidated complaint in California state court on December 30, 2019. The hearing on the Company’s demurrer is set for March 25, 2020. A scheduling order in the federal case has yet to be issued. The Company believes these lawsuits are without merit and intends to vigorously defend against them.

Redeemable Convertible Preferre

Redeemable Convertible Preferred Stock	12 Months Ended
Redeemable Convertible Preferred Stock	Dec. 31, 2019
Temporary Equity Disclosure [Abstract]
Redeemable Convertible Preferred Stock	Redeemable Convertible Preferred Stock The Company previously issued Series Seed, Series A, Series B, Series C, Series D, Series E, Series F, Series G, Series H, and Series I redeemable convertible preferred stock prior to the IPO. Immediately prior to the completion of the IPO on April 2, 2019, all outstanding shares of the Company’s redeemable convertible preferred stock converted into an aggregate of 219.2 million shares of Class A common stock. The authorized, issued and outstanding shares, issue price, conversion price, liquidation preference, and carrying value of the Company’s redeemable convertible preferred stock as of December 31, 2018 were as follows (in thousands, except for share and per share data): December 31, 2018 Shares Authorized Shares Issued and Outstanding Issue Price Per Conversion Price Liquidation Preference Carrying Value Series Seed 6,063,921 6,063,921 $ 0.23 $ 0.23 $ 1,365 $ 1,332 Series A 8,129,364 8,129,364 0.76 0.76 $ 6,200 $ 6,180 Series B 7,067,771 7,067,771 2.10 2.10 $ 14,860 $ 14,794 Series C 14,479,445 14,479,445 4.25 4.25 $ 61,500 $ 61,440 Series D 24,674,534 24,674,534 10.13 10.13 $ 250,000 $ 249,878 Series E 47,099,094 47,099,094 19.45 19.45 $ 915,870 $ 913,810 Series F 37,263,568 37,263,568 26.79 26.79 $ 998,250 $ 991,336 Series G 18,662,127 18,662,127 32.15 32.15 $ 599,987 $ 599,715 Series H 42,771,492 42,771,492 39.75 39.75 $ 1,700,000 $ 1,699,726 Series I 21,117,584 12,964,393 47.35 47.35 $ 613,915 $ 613,836 227,328,900 219,175,709 $ 5,161,947 $ 5,152,047 The characteristics of the redeemable convertible preferred stock were as follows: Voting The holders of the redeemable convertible preferred stock had one vote for each share of common stock into which the shares of redeemable convertible preferred stock would have been converted, subject to certain limitations. Dividends The holders of redeemable convertible preferred stock were entitled to receive noncumulative dividends, when, as and if declared by the board of directors, in proportion to the original purchase price of such shares of redeemable convertible preferred stock. As of December 31, 2019, no dividends have been declared or paid. Liquidation Preference In the event of any liquidation, dissolution, or winding up of the Company, either voluntary or involuntary, the holders of the then outstanding redeemable convertible preferred stock, were entitled to receive, prior and in preference to any distribution of any of the assets of the Company to the holders of the common stock, a liquidation preference in an amount per share disclosed in the above table (as adjusted for stock splits, stock dividends, and recapitalizations) plus all declared but unpaid dividends on such shares. If the Company did not have enough assets and funds legally available for distribution to meet this requirement, all of the Company’s assets and funds available were to be distributed ratably among the holders of redeemable convertible preferred stock in proportion to the preferential amount per share each such holder was otherwise entitled to receive. Unless stockholders representing (a) a majority of the then-outstanding redeemable convertible preferred stock, voting together as a single class on an as-converted basis, (b) a majority of the Series C redeemable convertible preferred stock and Series D redeemable convertible preferred stock, voting together as a single class on an as-converted basis, (c) a majority of the Series E redeemable convertible preferred stock, voting as a separate series, (d) a majority of the Series F redeemable convertible preferred stock, voting as a separate series, (e) a majority of the Series G redeemable convertible preferred stock, voting as a separate series, (f) a majority of the Series H redeemable convertible preferred stock, voting as a separate series (provided, however, that the approval of the holders of 71% of the Series H redeemable convertible preferred stock is required under certain circumstances) and (g) a majority of the Series I redeemable convertible preferred stock, voting as a separate series, elect otherwise, a “Deemed Liquidation Event” is defined to include (i) any liquidation, dissolution, or winding up of the Company, (ii) the merger or consolidation of the Company in which the holders of capital stock of the Company outstanding immediately prior to such merger or consolidation do not continue to represent immediately following such merger or consolidation at least 50%, by voting power, of the outstanding capital stock of the resulting or surviving entity or (iii) a sale, lease, transfer or other disposition of all or substantially all of the Company’s assets or the grant of an exclusive license to all or substantially all of the Company’s intellectual property (other than to a wholly owned subsidiary of the Company). The Company previously classified its redeemable convertible preferred stock outside of stockholders’ equity (deficit) because the shares contain liquidation features that are not solely within the Company’s control. Conversion Each share of redeemable convertible preferred stock was convertible, at the option of the holder, into common stock as determined by dividing its original price per share by the conversion price in effect at the time of conversion. The initial conversion price per share of each series of redeemable convertible preferred stock was equal to its respective original price per share, as indicated in the table above. The initial conversion price per share for each series of redeemable convertible preferred stock was subject to adjustment in accordance with anti-dilution provisions contained in the Company’s Amended and Restated Certificate of Incorporation. Immediately prior to the completion of the IPO on April 2, 2019, all outstanding shares of the Company’s redeemable convertible preferred stock converted into an aggregate of 219.2 million shares of Class A common stock. Redemption No shares of redeemable convertible preferred stock were unilaterally redeemable by either the stockholders or the Company; however, the Company’s Amended and Restated Certificate of Incorporation provided that upon any liquidation event such shares were entitled to receive the applicable liquidation preference. Series E Redeemable Convertible Preferred Stock Warrant In conjunction with the Company’s issuance of Series E redeemable convertible preferred stock, the Company issued a warrant to a preferred stockholder to purchase 2,571,275 shares of the Company’s Series E redeemable convertible preferred stock at an exercise price of $19.45 per share. The Company recorded a fair value gain of $2.9 million in 2016 reflected in earnings. In 2016, the preferred stockholder exercised the warrant with a non-cash settlement value of $8.1 million.

Common Stock and Employee Stock

Common Stock and Employee Stock Plans	12 Months Ended
Common Stock and Employee Stock Plans	Dec. 31, 2019
Share-based Payment Arrangement [Abstract]
Common Stock and Employee Stock Plans	Common Stock and Employee Stock Plans Common Stock The Company’s amended and restated certificate of incorporation authorizes the issuance of Class A common stock and Class B common stock. The rights of the holders of Class A common stock and Class B common stock are identical, except with respect to voting and conversion. Holders of Class A common stock are entitled to one vote per share and holders of Class B common stock are entitled to 20 votes per share. Shares of Class B common stock are convertible into an equivalent number of shares of Class A common stock and generally convert into shares of Class A common stock upon transfer. Any dividends paid to the holders of Class A common stock and Class B common stock will be paid on a pro rata basis. On a liquidation event, any distribution to common stockholders is made on a pro rata basis to the holders of the Class A common stock and Class B common stock. The following table summarizes the Company’s shares of common stock reserved for issuance as of December 31, 2019: Options issued and outstanding under the 2008 Plan 2,957,350 RSUs outstanding under the 2008 Plan, the 2018 Plan, and the 2019 Plan 41,685,376 Remaining shares available for future issuance under the 2019 ESPP Plan and the 2019 Plan 60,767,268 Equity Award Plans 2008 Equity Incentive Plan In July 2008, the board of directors of the Company adopted the 2008 Equity Incentive Plan (the 2008 Plan) under which the Company may grant options to purchase its common stock and offer to sell and issue restricted shares of its common stock and issue RSUs to selected employees, officers, directors and consultants of the Company. In June 2018, this plan was superseded by the 2018 Equity Incentive Plan (the 2018 Plan) and all reserved shares under the 2008 Plan were transferred to the 2018 Plan. Under the 2008 Plan, incentive stock options and nonqualified stock options are to be granted at a price that is not less than 100% of the fair value of the underlying common stock at the date of grant; provided, that incentive stock options granted to a person who directly or by attribution owns more than ten percent (10%) of the total combined voting power of all classes of stock of the Company are to be at a price not less than one hundred ten percent (110%) of the fair value of the underlying common stock at the date of grant. Stock options granted to newly hired employees typically vest 25% on the first anniversary of the date of hire and ratably each month over the ensuing 36-month period. The maximum term for stock options granted under the 2008 Plan might not exceed ten years from the date of grant. RSUs granted to newly hired employees typically vest 25% on the first Company-established vest date after the first anniversary of the employee’s date of hire and ratably each quarter over the ensuing 12-quarter period for purposes of the service condition. The maximum term for RSUs granted under the 2008 Plan might not exceed seven years from the date of grant. 2018 Equity Incentive Plan In June 2018, the board of directors and the stockholders of the Company adopted the 2018 Plan, which serves as the successor to the 2008 Plan and provides for the grant of stock options, stock appreciation rights, restricted stock, and RSUs to employees and consultants of the Company and its subsidiaries and non-employee directors of the Company. A total of 75,504,222 shares of the Company’s common stock initially was reserved for issuance under the 2018 Plan, which was increased in June 2018 by an additional 11,836,692 shares. In addition, the shares reserved for issuance under the 2018 Plan also will include any shares subject to stock options, RSUs or similar awards granted under its 2008 Plan that, after the date the Company’s board of directors initially approved its 2018 Plan, expire or otherwise terminate without having been exercised in full, are tendered to or withheld by the Company for payment of an exercise price or for satisfying tax withholding obligations or are forfeited to or repurchased by the Company due to failure to vest (provided that the maximum number of shares that may be added to its 2018 Plan from its 2008 Plan is 75,504,222 shares). Under the 2018 Plan, RSUs granted to newly hired employees typically vest 25% on the first Company-established vest date after the first anniversary of the employee’s date of hire and ratably each quarter over the ensuing 12-quarter period for purposes of the service condition. The maximum term for RSUs granted under the 2018 Plan might not exceed seven years from the date of grant. In March 2019, this plan was superseded by the 2019 Equity Incentive Plan (the 2019 Plan) and all reserved shares under the 2018 Plan were transferred to the 2019 Plan. 2019 Equity Incentive Plan In March 2019, the board of directors of the Company and the stockholders of the Company adopted the 2019 Plan which serves as the successor to the 2018 Plan and provides for the grant of stock options, stock appreciation rights, restricted stock, and RSUs to employees and consultants of the Company and its subsidiaries and non-employee directors of the Company. A total of 44,000,000 shares of the Company’s Class A common stock were reserved for issuance pursuant to the 2019 Plan. In addition, the shares reserved for issuance under the Company’s 2019 Plan also included (i) those shares reserved but unissued under our 2018 Plan as of immediately prior to the termination of the 2018 Plan and (ii) any shares subject to stock options, RSUs or similar awards granted under the 2018 Plan or 2008 Plan that, after the date the Company’s board of directors approved the 2019 Plan, expire or otherwise terminate without having been exercised in full, are tendered to or withheld by the Company for payment of an exercise price or for satisfying tax withholding obligations or are forfeited to or repurchased by the Company due to failure to vest (provided that the maximum number of shares that may be added to the Company’s 2019 Plan pursuant to (i) and (ii) is 80,604,678 shares). The number of shares available for issuance under the 2019 Plan will be increased on January 1 of each year, beginning on January 1, 2020, in an amount equal to the least of (i) 35,000,000 shares, (ii) five percent of the outstanding shares of all classes of the Company’s common stock on the last day of the immediately preceding fiscal year or (iii) such number of shares determined by the administrator. The summary of stock option activity is as follows (in thousands, except per share data): Options Outstanding Number of Weighted- Weighted- Aggregate (in years) Balance as of December 31, 2018 13,818 $3.27 5.1 $ 609,409 Exercises (10,856) 2.76 Forfeitures (1) 3.23 Cancellations (4) 9.78 Balance as of December 31, 2019 2,957 $5.13 4.7 $ 112,066 Vested and exercisable at December 31, 2019 2,957 $5.13 4.7 $ 112,066 There were no stock options granted during the year ended December 31, 2019 and 2018. The aggregate intrinsic value of stock options exercised during the years ended December 31, 2019, 2018 and 2017 was $617.4 million, $85.0 million and $25.8 million, respectively. The aggregate intrinsic value disclosed in the above table is based on the difference between the original exercise price of the stock option and the fair value of the Company’s common stock of $43.02, $47.37 and $35.47 per share as of December 31, 2019, 2018 and 2017, respectively. In the first quarter of 2019, the Company issued 3,162,797 shares of its common stock, valued at $205.6 million, pursuant to the exercise by the Company’s co-founders of all their respective vested and outstanding options (after withholding an aggregate of 3,617,460 shares of common stock subject to such options for payment of the exercise price and satisfaction of the aggregate tax withholding obligations, totaling $223.5 million, in connection with the exercise of certain of those options). In the second quarter of 2019, these shares of common stock were reclassified into shares of Class A common stock and subsequently exchanged for shares of Class B common stock as described in Note 1 - Description of Business and Basis of Presentation - Initial Public Offering. The summary of restricted stock unit activity is as follows (in thousands, except per share data): Number of Weighted- Aggregate Nonvested units as of December 31, 2018 46,433 $ 32.69 $ 2,199,554 Granted 29,547 61.04 Vested (28,623) 30.63 Canceled (5,672) 48.38 Nonvested units as of December 31, 2019 41,685 $ 52.06 $ 1,793,305 In connection with RSUs that vested in the year ended December 31, 2019, the Company withheld 10,777,331 shares and remitted tax liabilities of $719.5 million on behalf of the RSU holders to the relevant tax authorities in cash. Effective in the fourth quarter of 2019, the Company changed the default tax withholding method for RSUs from the net settlement method to the sell-to-cover method. As a result, no shares were withheld to settle tax withholding obligations for RSUs that vested and settled in the fourth quarter of 2019. The tax withholding obligations for RSUs held by Section 16 officers of the Company that vest and settle after December 31, 2019 will revert to the net settlement method. 2019 Employee Stock Purchase Plan In March 2019, the Company’s board of directors adopted, and the Company’s stockholders approved, the 2019 Employee Stock Purchase Plan (the “2019 ESPP”). The 2019 ESPP went into effect on March 27, 2019. Subject to any limitations contained therein, the 2019 ESPP allows eligible employees to contribute, through payroll deductions, up to 15% of their eligible compensation to purchase the Company’s Class A common stock at a discounted price per share. The 2019 ESPP provides for consecutive, overlapping 12-month offering periods, subject to certain reset provision as defined in the plan. The initial offering period ran from March 28, 2019 through December 31, 2019. A total of 6,000,000 shares of Class A common stock were reserved for issuance under the 2019 ESPP. As of December 31, 2019, 403,831 shares of Class A common stock have been purchased under the 2019 ESPP. The number of shares reserved under the 2019 ESPP will automatically increase on the first day of each calendar year beginning on January 1, 2020 in a number of shares equal to the least of (i) 7,000,000 shares of Class A common stock, (ii) one percent of the outstanding shares of all classes of the Company’s common stock on the last day of the immediately preceding fiscal year, or (iii) an amount determined by the administrator of the 2019 ESPP. Stock-Based Compensation The Company recorded stock-based compensation expense in the consolidated statements of operations for the periods indicated as follows (in thousands): Year Ended December 31, 2019 2018 2017 Cost of revenue $ 81,321 $ 501 $ 464 Operations and support 75,212 177 2,549 Research and development 971,941 4,107 2,379 Sales and marketing 72,046 261 415 General and administrative 398,791 3,531 3,739 Total stock-based compensation expense $ 1,599,311 $ 8,577 $ 9,546 In conjunction with one of the acquisitions in 2018, the Company issued 241,390 shares of restricted stock awards to executives of an acquired company with an aggregate grant-date fair value of $11.4 million. 146,373 and 20,989 of these restricted stock awards vested as of December 31, 2019 and 2018, respectively, and as of December 31, 2019 the remaining restricted stock awards vest over a period of nine months. The Company recorded $6.0 million and $1.4 million as compensation related to these vested restricted stock awards which is included in research and development expense in the consolidated statement of operations for the years ended December 31, 2019 and 2018, respectively. As of December 31, 2019 and 2018 there was $3.9 million and $9.6 million of unrecognized compensation cost related to unvested stock options and restricted stock awards, which is expected to be recognized over a weighted-average period of 0.7 years and 1.6 years, respectively. As of December 31, 2019, the total unrecognized compensation cost related to RSUs was $1.1 billion. The Company expects to recognize this expense over the remaining weighted-average period of approximately 2.6 years. The Company recognizes compensation expense on the RSUs granted prior to the effectiveness of its IPO Registration Statement on March 28, 2019 using the accelerated attribution method. All RSUs granted after March 28, 2019 vest on the satisfaction of a service-based condition only. The Company recognizes compensation expense for such RSUs upon a straight-line basis over their requisite service periods.

Tender Offer

Tender Offer	12 Months Ended
Tender Offer	Dec. 31, 2019
Equity [Abstract]
Tender Offer	Tender OfferIn March 2018, the Company facilitated a tender offer whereby an existing stockholder and affiliated entities (the Purchaser) would purchase up to an aggregate of 2,207,792 shares of common stock for $38.50 per share in cash from certain equity holders (including then-current employees). The Company engaged a third-party broker to facilitate an auction process whereby the Purchaser was selected. At the time of the tender offer, the fair value of the Company’s common stock was equal to the tender offer price. Sellers holding options were permitted to cashless exercise options in connection with their participation in the tender offer. The tender offer closed in April 2018 and an aggregate of 1,523,532 shares of common stock were tendered for $58.7 million.

Income Taxes

Income Taxes	12 Months Ended
Income Taxes	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income Tax	Income Taxes The components of the provision for income taxes for the periods indicated are as follows (in thousands): Year Ended December 31, 2019 2018 2017 United States $ (2,600,858) $ (900,642) $ (687,743) Foreign 973 (9,955) (2) Loss before income taxes $ (2,599,885) $ (910,597) $ (687,745) The provision for income taxes for the periods indicated are as follows (in thousands): Year Ended December 31, 2019 2018 2017 Current provision Federal $ — $ — $ — State 2,704 1,250 556 Foreign 1,901 116 — Total current $ 4,605 $ 1,366 $ 556 Deferred provision Federal (269) — — State (891) — — Foreign (1,089) (628) — Total deferred (2,249) (628) — Total provision for income taxes $ 2,356 $ 738 $ 556 A reconciliation of the U.S. federal statutory income tax rates to the Company’s effective tax rate is as follows: Year Ended December 31, 2019 2018 2017 Provision at federal statutory rate 21.0 % 21.0 % 34.0 % State, net of federal benefit 7.6 6.0 3.7 Permanent tax adjustments (0.4) (0.8) (0.6) Federal statutory tax rate change — — (34.8) Stock-based compensation 9.9 0.8 (0.2) Change in valuation allowance (38.1) (27.6) (2.3) Other adjustments (0.2) 0.5 0.1 Provision for income taxes (0.2) % (0.1) % (0.1) % Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes at the enacted rates. The significant components of the Company’s deferred tax assets and liabilities as of the periods indicated were as follows (in thousands): December 31, 2019 2018 Net operating loss carryforward $ 1,173,732 $ 475,823 Insurance reserves 391,250 239,401 Accrued and other liabilities 369,018 83,187 Total deferred tax assets 1,934,000 798,411 State income taxes (92,585) (39,902) Operating lease right of use asset (88,376) — Total deferred tax liabilities (180,961) (39,902) Net deferred tax asset 1,753,039 758,509 Less: Valuation allowance (1,751,118) (761,728) Net deferred tax asset (liability) $ 1,921 $ (3,219) A reconciliation of the valuation allowance is as follows (in thousands): Year Ended December 31, 2019 2018 2017 Beginning balance $ 761,728 $ 507,274 $ 491,356 Net changes in deferred tax assets and liabilities 989,390 254,454 15,918 Ending balance $ 1,751,118 $ 761,728 $ 507,274 The valuation allowance increased by $989.4 million for the year ended December 31, 2019, compared to the increase of $254.5 million for the year ended December 31, 2018. The Company believes that, based on a number of factors, the available objective evidence creates sufficient uncertainty regarding the realizability of the deferred tax assets such that a valuation allowance has been recorded. These factors include the Company’s history of net losses since its inception. As of December 31, 2019, the Company had U.S. federal, state and foreign net operating loss carryforwards of approximately $4.2 billion, $3.8 billion and $8.3 million, respectively. The federal net operating loss carryforwards generated through December 31, 2017 expire at various dates beginning in 2030 and will continue to expire through 2037, while federal net operating loss carryforwards generated in 2018 or later do not expire. The state net operating loss carryovers will begin to expire in 2022 and will continue to expire through 2039. The foreign net operating loss carryovers will begin to expire in 2037. Utilization of the net operating loss carryforwards are subject to various limitations due to the ownership change limitations provided by Internal Revenue Code (IRC) Section 382 and similar state provisions. The Company files income tax returns with the U.S. federal government, various state jurisdictions and certain foreign jurisdictions. The Company’s tax returns in all jurisdictions remain open to examination. The Company began having foreign operations in fiscal year 2017. At that time and prior to the enactment of the Tax Act, the Company had indefinite investment assertion on all of its undistributed earnings from foreign subsidiaries. As a result of the enactment of the Tax Act, the Company has reevaluated its historic assertion and continues to assert these earnings to be indefinitely reinvested. The Company’s policy is to recognize interest and penalties associated with uncertain tax benefits as part of the income tax provision and include accrued interest and penalties with the related income tax liability on the Company’s consolidated balance sheets. To date, the Company has not recognized any interest and penalties in its consolidated statements of operations, nor has it accrued for or made payments for interest and penalties. The Company has no material unrecognized tax benefits as of December 31, 2019, 2018 and 2017.

Net Loss Per Share

Net Loss Per Share	12 Months Ended
Net Loss Per Share	Dec. 31, 2019
Earnings Per Share [Abstract]
Net Loss Per Share	Net Loss Per Share Basic net loss per share is computed by dividing the net loss by the weighted-average number of shares of common stock outstanding during the period, less shares subject to repurchase. The diluted net loss per share is computed by giving effect to all potentially dilutive common stock equivalents outstanding for the period. For purposes of this calculation, redeemable convertible preferred stock, stock options, RSUs, restricted stock awards, stock purchase rights granted under the Company’s ESPP, and early exercised stock options are considered to be common stock equivalents but are excluded from the calculation of diluted net loss per share when including them has an anti-dilutive effect. Basic and diluted net loss per share are the same for each class of common stock because they are entitled to the same liquidation and dividend rights. The following table sets forth the computation of basic and diluted net loss per share for the periods indicated (in thousands, except per share data): Year Ended December 31, 2019 2018 2017 Net loss $ (2,602,241) $ (911,335) $ (688,301) Weighted-average shares used in computing net loss per share, basic and diluted 227,498 21,176 19,371 Net loss per share, basic and diluted $ (11.44) $ (43.04) $ (35.53) The following outstanding shares of common stock equivalents were excluded from the computation of diluted net loss per share for the periods presented because including them would have had an anti-dilutive effect (in thousands): As of December 31, 2019 2018 2017 Redeemable convertible preferred stock (on an if-converted basis) — 219,176 199,815 Stock options 2,957 13,818 16,302 Restricted stock units 41,685 46,433 26,052 Restricted stock awards 94 220 — Early exercised options — — 10 Total 44,736 279,647 242,179

Related-Party Transactions

Related-Party Transactions	12 Months Ended
Related-Party Transactions	Dec. 31, 2019
Related Party Transactions [Abstract]
Related Party Transactions	Related-Party Transactions During each of the years ended December 31, 2019, 2018 and 2017, the Company purchased certain advertising-related and other services in the amount of $18.1 million, $92.4 million, and $74.4 million, respectively, from a company that is affiliated with a significant stockholder of the Company, which was recorded to cost of revenue and sales and marketing expenses in the consolidated statements of operations based on the nature of the services. This entity ceased to be a related party in April 2019. During each of the years ended December 31, 2019, 2018 and 2017, the Company purchased certain marketing services in the amount of $1.9 million, $4.0 million and $0.8 million, respectively, from two companies owned by a significant stockholder of the Company. As of December 31, 2019 and 2018, amounts due from and to these related parties as included in the consolidated balance sheets were immaterial. During the years ended December 31, 2019, 2018 and 2017, the Company received cash proceeds from the issuance of redeemable convertible preferred stock to these related parties of $0, $0, and $400 million, respectively, which were included in the cash flows from financing activities in the consolidated statements of cash flows. During each of the years ended December 31, 2019, 2018 and 2017, the Company recorded an immaterial amount of revenue from these related parties in the consolidated statements of operations.

401(k) Plan

401(k) Plan	12 Months Ended
401(k) Plan	Dec. 31, 2019
Retirement Benefits [Abstract]
401(k) Plan	401(k) PlanThe Company adopted a 401(k) Plan that qualifies as a deferred salary arrangement under Section 401 of the IRC. Under the 401(k) Plan, participating employees may defer a portion of their pretax earnings not to exceed the maximum amount allowable. The Company does not make contributions for eligible employees.

Subsequent Events

Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Reduction in Workforce In January 2020, the Company announced a reduction of the workforce of 90 employees, or approximately 1.6% of the Company’s employees. This reduction in workforce will not have a material impact on the Company’s financial statements. Flexdrive Acquisition On February 7, 2020, the Company signed and closed the acquisition of Flexdrive, a joint venture between Cox Automotive and Holman Enterprises, for approximately $20 million in order to streamline its processes and reduce certain costs associated with the partnership. Flexdrive has been one of the Company’s Express Drive partners. Prior to the acquisition, the Company acted as the lessee of Flexdrive’s owned and leased vehicles and sublessor for each vehicle prior to its rental by drivers, and as of December 31, 2019, the Company recognized approximately $124 million right-of-use assets and $120 million of lease liabilities on the balance sheet related to its existing agreement with Flexdrive. In addition, the Company assumed certain indebtedness. The Company is currently in the process of valuing the assets acquired and liabilities assumed in the transaction and will provide all required disclosures in the first quarter ending March 31, 2020.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
Summary of Significant Accounting Policies (Policies)	Dec. 31, 2019
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation These consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (U.S. GAAP) and include the accounts of the Company and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated. The Company uses the U.S. dollar predominantly as the functional currency of its foreign subsidiaries. For foreign subsidiaries where the U.S. dollar is the functional currency, gains and losses from remeasurement of foreign currency balances into U.S. dollars are included in the consolidated statements of operations. For the foreign subsidiary where the local currency is the functional currency, translation adjustments of foreign currency financial statements into U.S. dollars are recorded to a separate component of accumulated other comprehensive loss.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and reported amounts of revenues and expenses during the reporting periods. The Company bases its estimates on various factors and information which may include, but are not limited to, history and prior experience, expected future results, new related events and economic conditions, which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Actual results could differ materially from those estimates. Significant items subject to estimates and assumptions include those related to losses resulting from insurance claims, fair value of financial instruments, goodwill and identifiable intangible assets, leases, indirect tax obligations, legal contingencies, valuation allowance for deferred income taxes, and the valuation of stock-based compensation.
Segment Information	Segment InformationOperating segments are defined as components of an entity for which separate financial information is available and that is regularly reviewed by the Chief Operating Decision Maker (CODM) in deciding how to allocate resources to an individual segment and in assessing performance. The Company’s Chief Executive Officer is the Company’s CODM. The CODM reviews financial information presented on a consolidated basis for purposes of making operating decisions, allocating resources, and evaluating financial performance. As such, the Company has determined that it operates in one operating segment.
Revenue Recognition	Revenue Recognition The Company generates substantially all of its revenue from its ridesharing marketplace that connects drivers and passengers. The Company also generates revenue from its network of shared bikes and scooters, its Express Drive program, Lyft Rentals and Driver Centers. Beginning in 2018, the Company generated revenue from subscription fees paid by riders to access its network of shared bikes and single-use ride fees paid by riders to access its network of shared bikes and scooters. Subscription fees are recognized on a straight-line basis over the subscription period. Single-use ride fees are recognized upon completion of each related ride. Revenue from the network of shared bikes and scooters was not material for the years ended December 31, 2019 and 2018. For its Express Drive program, the Company primarily generates revenue from lease income earned under an arrangement with one of its third-party Express Drive partners. In February 2020, the Company signed and closed the acquisition of Flexdrive . Refer to Note 16 “ Subsequent Events ” to our consolidated financial statements for information regarding this acquisition. The Company recognizes revenue for its rideshare marketplace in accordance with Accounting Standards Codification Topic 606 (“ASC 606”), “Revenue from Contracts with Customers.” Rideshare Marketplace: The Company generates revenue from service fees and commissions (collectively, “fees”) paid by drivers for use of the Lyft Platform and related activities to connect drivers with passengers to facilitate and successfully complete rides via the App where Lyft operates as a Transportation Network Company. The Company recognizes revenue upon completion of each ride. Under the ToS, drivers agree that the Company retains the applicable fee as consideration for their use of the Lyft Platform and related activities from the fare and related charges it collects from passengers on behalf of drivers. Principal vs. Agent Considerations: The Company evaluates the presentation of revenue on a gross vs. net basis based on whether it acts as a principal by controlling the transportation service provided to the passenger or whether it acts as an agent by arranging for third parties to provide the service to the passenger. The Company facilitates the provision of a transportation service by a driver to a passenger (the driver’s customer) in order for the driver to fulfill their contractual promise to the passenger. The driver fulfills their promise to provide a transportation service to their customer through use of the Lyft Platform. While the Company facilitates setting the price for transportation services, the drivers and passengers have the discretion in accepting the transaction price through the platform. The Company is not responsible for fulfilling transportation services being provided to the passenger nor does the Company have inventory risk related to these services. The Company is acting as an agent in facilitating the ability for a driver to provide a transportation service to a passenger. The Company reports revenue on a net basis, reflecting the fee owed to the Company from a driver as revenue, and not the gross amount collected from the passenger. The Company determined that it is not primarily responsible for the services since it does not promise the transportation services, does not contract with drivers to provide transportation services on the Company’s behalf, does not control whether the driver accepts or declines the transportation request via the Lyft Platform, and does not control the provision of transportation services by drivers to passengers at any point in time either before, during or after the ride. The Company applied the following steps to achieve the core principle of ASC 606: 1. Identification of the Contract, or Contracts, with a Customer: The Company considered the ToS and its customary business practices in identifying the contracts under ASC 606. Drivers accept the ToS with Lyft to use the App. The ToS defines the fees the Company charges drivers for each transaction, each party’s rights and obligations regarding the services to be transferred and payment terms. The driver agrees to perform the transportation service as requested by the passenger upon acceptance of a passenger’s request for a ride via the App. As the Company’s customary business practice, a contract exists between the driver and the Company when the driver’s ability to cancel the ride lapses, which typically is upon pickup of the passenger. The duration of a contract with a customer is typically equal to the duration of a single ride. The Company does not earn any fees from the passengers to access the App and the Company has no obligation to the passengers to provide the ride. The Company collects the fare and related charges from passengers on behalf of drivers using the passenger’s pre-authorized credit card or other payment mechanism and retains its fees before making the remaining disbursement to drivers; thus the driver’s ability and intent to pay is not subject to significant judgment. 2. Identification of the Performance Obligations in the Contract: The Company provides a service to drivers to complete a successful transportation service for passengers. The service includes on-demand lead generation that assists drivers to find, receive and fulfill on-demand requests from passengers seeking transportation services and related collection activities using the Lyft Platform. These activities are not distinct from each other and are not separate performance obligations. As a result, the Company’s single performance obligation in the transaction is to connect drivers with passengers to facilitate the completion of a successful transportation service for passengers. 3. Determination of the Transaction Price: The Company earns fees from the drivers either as the difference between an amount paid by a passenger based on an up-front quoted fare and the amount earned by a driver based on actual time and distance for the ride or as a fixed percentage of the fare charged to the passenger. In an up-front quoted fare arrangement, as the Company does not control the driver’s actions at any point in the transaction to limit the time and distance for the ride, the Company takes on risks related to the driver’s actions which may not be fully mitigated. The Company earns a variable amount from the drivers and may record a loss from a transaction, which is recorded as a reduction to revenue, in instances where an up-front quoted fare offered to a passenger is less than the amount the Company is committed to pay the driver. The Company records certain payments to drivers, such as refunds and ride incentives, as variable consideration which results in a reduction to the fee earned by the Company at the time such payments are earned by the driver. Taxes, municipal and airport fees assessed by governmental authorities that are both imposed on and are concurrent with specific revenue producing transactions, and collected from drivers and passengers, are excluded from the transaction price. Such amounts are not included as a component of revenue or cost of revenue. The Company has no significant financing components with customers and did not utilize the practical expedient under ASC 606-10-32-18. 4. Allocation of the Transaction Price to the Performance Obligations in the Contract: The Company’s single performance obligation in the transaction is to connect drivers with passengers to facilitate the completion of a successful transportation service for passengers. As a result, there is no allocation of the transaction price. 5. Recognition of Revenue when, or as, the Company Satisfies a Performance Obligation: Revenue is recognized at the time the performance obligation is satisfied by transferring the control of the promised service to a customer in an amount that reflects the consideration that the Company expects to receive in exchange for the service. The Company recognizes revenue upon completion of a ride as its performance obligation is satisfied upon the completion of the ride. The Company does not have contract assets or contract liabilities as the payment of the transaction price is concurrent with the fulfillment of the services. At the time of ride completion, the Company has the right to receive payment for the services rendered. Accordingly, there are no partially satisfied or unsatisfied performance obligations as of December 31, 2019 and 2018. As part of the adoption of ASC 606, the Company evaluated the use of practical expedients as required under the standard. New driver referral bonuses paid are contingent upon a new driver completing a certain number of rides and represent the incremental cost of obtaining a contract with a customer. The Company applied the practical expedient under ASC 606-10-45-1 and expenses new driver referral bonuses as sales and marketing expense when the referral bonuses are earned because the amortization period would be one year or less. The Company has no significant financing components with customers and did not utilize the practical expedient under ASC 606-10-32-18. Express Drive Program Revenue Under the Express Drive program, the Company connects drivers who need access to a car with third-party rental car companies. The Company facilitates car rental transactions between car rental companies and drivers. During 2018, the Company expanded its Express Drive program with Flexdrive , a third-party rental car provider. Under the Company’s agreement with Flexdrive (the “head lease”), the Company is required to pay fleet operating costs over periods ranging from two Flexdrive are charged rental fees which the Company collects from the driver. The Company collects rental fees by deducting such amounts from the driver’s earnings on the Lyft Platform, or through charging the driver’s credit card. The Company is a principal in car rental transactions involving Flexdrive as the Company becomes a lessee for each vehicle prior to its rental by a driver and is committed to the payment of fixed monthly amounts and other fleet operating costs. The Company subleases the vehicles to drivers when they are rented by drivers and, as a result, the Company considers itself to be the accounting sublessor in its arrangements with drivers. Vehicle leases with Flexdrive are classified as operating leases and, accordingly, each sublease representing a car rental transaction with a driver is also an operating lease. Sublease income (revenue) and head lease expense for the Company’s transactions involving Flexdrive Incentive Programs The Company offers incentives to attract drivers, passengers and riders of shared bikes and scooters (“Light Vehicle renters”) to use the Lyft Platform. Drivers generally receive cash incentives while passengers and Light Vehicle renters generally receive free or discounted rides under such incentive programs. Incentives provided to drivers and Light Vehicle renters, the customers of the Company, are accounted for as a reduction of the transaction price. As the passengers are not the Company’s customers, incentives provided to passengers are generally recognized as sales and marketing expense except for certain pricing programs described below. Driver Incentives The Company offers various incentive programs to drivers, including minimum guaranteed payments, volume-based discounts and performance-based bonus payments. These driver incentives are similar to retrospective volume-based rebates and represent variable consideration that is typically settled within a week. The Company reduces the transaction price by the estimated amount of the incentives expected to be paid upon completion of the performance criteria by applying the most likely outcome method. Therefore, such driver incentives are recorded as a reduction to revenue. Driver incentives are recorded as a reduction to revenue if the Company does not receive a distinct good or service in exchange for the payment or cannot reasonably estimate the fair value of the good or service received. Driver incentives for referring new drivers or passengers are accounted for as sales and marketing expense. The amount recorded as an expense is the lesser of the amount of the payment or the established fair value of the benefit received. The fair value of the benefit is established using amounts paid to third parties for similar services. Passenger Incentives The Company has several passenger incentive programs, which are offered to encourage passenger activity on the Lyft Platform. Generally, the passenger incentive programs are as follows: (i) Market-wide marketing promotions and discounts on shared rides. Market-wide promotions reduce the fare charged by drivers to passengers for all or substantially all rides in a specific market. This type of incentive effectively reduces the overall pricing of the service provided by drivers for that specific market and the gross fare charged by the driver to the passenger, and thereby results in a lower fee earned by the Company. In addition, discounted pricing on shared rides may result in a reduced fee earned by the Company. Accordingly, the Company records these types of incentives as a reduction to revenue at the date it records the corresponding revenue transaction. (ii) Targeted marketing promotions. Targeted marketing promotions are used in newly launched markets but may also be used in mature markets from time to time. An example of a promotion is when the Company offers a number of discounted rides (capped at a given number of rides) which are valid only during a limited period of time to a targeted group of occasional passengers. The Company believes that the incentives that provide consideration to passengers to be applied to a limited number of rides are similar to marketing coupons. These incentives differ from the market-wide marketing promotions because they do not reduce the overall pricing from the service provided by drivers for a specific market. The intent of these incentives is to promote the use of the Lyft Platform to the targeted group of passengers. During the promotion period, passengers not utilizing an incentive would be charged the full fare. These incentives represent marketing costs. When a passenger redeems the incentive, the Company recognizes revenue equal to the transaction price and the cost of the incentive is recorded as sales and marketing expense. (iii) Passenger referral programs. Under the passenger referral program, the referring passenger (the referrer) earns referral coupons when a new passenger (the referee) completes their first ride on the Lyft Platform. The Company records the incentive as a liability at the time the incentive is earned by the referrer with the corresponding charge recorded to sales and marketing expense. Referral coupons typically expire within one year. The Company estimates breakage using its historical experience. As of December 31, 2019 and 2018 the passenger referral coupon liability was not material. Light Vehicle Renter Incentives Incentives offered to Light Vehicle renters to access the Company’s network of shared bikes and scooters were not material for the years ended December 31, 2019 and 2018.
Cost of Revenue	Cost of Revenue Cost of revenue primarily consists of insurance costs that are generally required under TNC and city regulations for ridesharing and Light Vehicle rentals, respectively, payment processing charges, including merchant fees, chargebacks and failed charges, hosting and platform-related technology costs, certain direct costs related to Light Vehicles, the Flexdrive program, personnel-related compensation costs and amortization of technology related intangible assets.
Operations and Support	Operations and Support Operations and support expenses primarily consist of personnel-related compensation costs of local operations teams and teams who provide phone, email and chat support to passengers, drivers and Light Vehicle renters, driver background checks and onboarding costs, fees paid to third parties providing operations support and Express Drive program support costs.
Research and Development	Research and Development Research and development expenses primarily consist of personnel-related compensation costs and facilities costs. Such expenses include costs related to the Company’s autonomous vehicle technology initiatives. Research and development costs are expensed as incurred.
Sales and Marketing Expense	Sales and MarketingSales and marketing expenses primarily consist of passenger incentives and refunds, driver incentives for referring new drivers or passengers, personnel-related compensation costs, advertising expenses, passenger refunds and marketing partnerships with third parties. Sales and marketing costs are expensed as incurred.
General and Administrative	General and Administrative General and administrative expenses primarily consist of personnel-related compensation costs, certain insurance costs that are generally not required under TNC regulations, professional services fees, certain loss contingency expenses including legal accruals and settlements, claims administrative fees, facility costs, and other corporate costs. General and administrative expenses are expensed as incurred.
Stock-based Compensation	Stock-Based Compensation The Company incurs stock-based compensation expense primarily from RSUs, stock options, and ESPP purchase rights. The Company estimates the fair value of stock options granted to employees, directors, and consultants and ESPP purchase rights using the Black-Scholes option-pricing model. The Black-Scholes model considers several variables and assumptions in estimating the fair value of stock-based awards. These variables include: • per share fair value of the underlying common stock; • exercise price; • expected term; • risk-free interest rate; • expected annual dividend yield; and • expected stock price volatility over the expected term. The Company estimates the expected term for stock options using the simplified method for “plain vanilla” stock option awards. The expected term of the ESPP purchase rights is estimated using the period from the beginning of the offering period to the end of each purchase period. Since the Company has limited history as a public company and does not yet have sufficient trading history for the Company's common stock, the Company estimates volatility for stock options and ESPP purchase rights using the historical volatility of the stock price of similar publicly traded peer companies. The risk-free interest rate is based on the yield available on U.S. Treasury zero-coupon issues similar in duration to the expected term of the stock options or ESPP purchase rights granted. The fair value of stock options that are expected to vest is recognized as compensation expense on a straight-line basis over the requisite service period. The Company recognizes compensation expense related to the ESPP purchase rights on a straight-line basis over the offering period, which is typically 12 months. The fair value of RSUs is estimated based on the fair market value of the Company’s common stock on the date of grant, which subsequent to the IPO is determined based on the closing price of the Company’s Class A common stock as reported on the date of grant. Prior to the IPO, the Company granted RSUs which vest upon the satisfaction of both a service condition and a performance condition. Compensation expense for RSUs with service and performance conditions is amortized on a graded basis over the requisite service period as long as the performance condition in the form of a specified liquidity event is probable to occur. The liquidity event condition was satisfied upon the effectiveness of the IPO Registration Statement on March 28, 2019. On that date the Company recorded a cumulative stock-based compensation expense of $857.2 million using the accelerated attribution method for the RSUs for which the service condition was satisfied as of March 28, 2019. The remaining unrecognized stock-based compensation expense related to these RSUs is recorded over their remaining requisite service periods. The compensation expense for RSUs granted after March 28, 2019, which vest upon satisfaction of a service-based condition only, is recognized on a straight-line basis over the requisite service period.
Income Taxes	Income Taxes The Company accounts for income taxes using the asset and liability method. Under this method, deferred income tax assets and liabilities are recorded based on the estimated future tax effects of differences between the financial statement and income tax basis of existing assets and liabilities. These differences are measured using the enacted statutory tax rates that are expected to apply to taxable income for the years in which differences are expected to reverse. The Company recognizes the effect on deferred income taxes of a change in tax rates in the period that includes the enactment date. The Company records a valuation allowance to reduce its deferred tax assets to the net amount that it believes is more-likely-than-not to be realized. Management considers all available evidence, both positive and negative, including historical levels of income, expectations and risks associated with estimates of future taxable income and ongoing tax planning strategies in assessing the need for a valuation allowance.
Business Combinations	Business Combinations The Company accounts for its business combinations using the acquisition method of accounting, which requires, among other things, allocation of the fair value of purchase consideration to the tangible and intangible assets acquired and liabilities assumed at their estimated fair values on the acquisition date. The excess of the fair value of purchase consideration over the values of these identifiable assets and liabilities is recorded as goodwill. When determining the fair value of assets acquired and liabilities assumed, management makes significant estimates and assumptions, especially with respect to intangible assets. Management’s estimates of fair value are based upon assumptions believed to be reasonable, but which are inherently uncertain and unpredictable and, as a result, actual results may differ from estimates. During the measurement period, not to exceed one year from the date of acquisition, the Company may record adjustments to the assets acquired and liabilities assumed, with a corresponding offset to goodwill if new information is obtained related to facts and circumstances that existed as of the acquisition date. After the measurement period, any subsequent adjustments are reflected in the consolidated statements of operations and comprehensive loss. Acquisition costs, such as legal and consulting fees, are expensed as incurred.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash equivalents consist of institutional money market funds and certificates of deposits denominated in U.S. dollars as well as commercial paper and corporate bonds. Cash equivalents are highly liquid, short-term investments having an original maturity of 90 days or less that are readily convertible to known amounts of cash. Also included in cash and cash equivalents are cash in transit from payment processors for credit and debit card transactions, which was immaterial as of each of December 31, 2019 and 2018, and money market deposit accounts that are stated at cost, which approximate fair value.
Restricted Cash and Cash Equivalents	Restricted Cash and Cash Equivalents Restricted cash and cash equivalents consist primarily of amounts held in separate trust accounts and restricted bank accounts as collateral for insurance purposes and amounts pledged to secure certain letters of credit.
Short-Term Investments	Short-Term Investments The Company holds short-term investments in commercial paper, certificates of deposit, and corporate bonds, which mature in twelve months or less. The Company considers its investments as available to support its current operations. As a result, the Company classifies its investments as current assets in the accompanying consolidated balance sheets. The Company classifies these securities as “available-for-sale” and carries them at fair value on the consolidated balance sheets. Unrealized gains or losses are recorded, net of estimated taxes, in accumulated other comprehensive income (loss), a component of stockholders’ equity (deficit). Realized gains and losses are recognized upon sale. The specific identification method is used to determine the cost basis of fixed income securities sold. As of December 31, 2019 and 2018, accumulated other comprehensive income primarily relates to unrealized gains and losses on available-for-sale investments, net of estimated taxes. The Company’s short-term investments also include certain term deposits that are stated at cost, which approximate fair value. The Company periodically evaluates its investments for impairment due to declines in market value considered to be “other-than-temporary.” This evaluation consists of several qualitative and quantitative factors, including the Company’s ability and intent to hold the investment until a forecasted recovery occurs, as well as any decline in the investment quality of the security and the severity and duration of the unrealized loss. In the event of a determination that a decline in market value is other-than-temporary, the Company will recognize an impairment loss, and a new cost basis in the investment will be established. To date, the Company has not recorded any impairment related to its investments in its consolidated statements of operations.
Restricted Investments	Restricted InvestmentsThe Company’s contracts with insurance providers require reinsurance premiums to be deposited into trust accounts with a third-party financial institution from which the insurance providers are reimbursed for claim payments.
Concentrations of Credit Risk	Concentrations of Credit Risk The Company’s cash, cash equivalents and short-term investments are potentially subject to concentration of credit risk. Although the Company deposits its cash with multiple financial institutions, the deposits, at times, may exceed federally insured limits. The Company has not experienced any losses on its deposits of cash and cash equivalents. Management believes that the institutions are financially stable and, accordingly, minimal credit risk exists. The Company limits purchases of debt securities to investment-grade securities.
Fair Value Measurements	Fair Value Measurements The Company measures assets and liabilities at fair value based on an expected exit price, which represents the amount that would be received on the sale of an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value may be based on assumptions that market participants would use in pricing an asset or liability. The authoritative guidance on fair value measurements establishes a consistent framework for measuring fair value on either a recurring or nonrecurring basis, whereby inputs used in valuation techniques, are assigned a hierarchical level. The following are the hierarchical levels of inputs to measure fair value: Level 1 Observable inputs that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets. Level 2 Inputs reflect quoted prices for identical assets or liabilities in markets that are not active; quoted prices for similar assets or liabilities in active markets; inputs other than quoted prices that are observable for the assets or liabilities; or inputs that are derived principally from or corroborated by observable market data by correlation or other means. Level 3 Unobservable inputs reflecting our own assumptions incorporated in valuation techniques used to determine fair value. These assumptions are required to be consistent with market participant assumptions that are reasonably available. The carrying values of the Company’s accounts payable and accrued and other liabilities approximate their respective fair values due to the short period of time to payment.
Light Vehicle Fleet and Property and Equipment	Light Vehicle Fleet The Company’s Light Vehicle fleet consists of bikes and scooters. Scooters are stated at cost less accumulated depreciation and are included in prepaid expenses and other current assets in the consolidated balance sheets. Depreciation is computed using a straight-line method over the estimated useful life of the scooters, which is less than 12 months. As of December 31, 2019 and 2018, the cost of scooters not yet placed in service was $9.7 million and $23.3 million, respectively. As of December 31, 2019 and 2018, the carrying value of scooters placed in service was not material. Bikes are included in property and equipment, net in the consolidated balance sheets. Property and Equipment Property and equipment are stated at cost less accumulated depreciation. Depreciation is computed using a straight-line method over the estimated useful life of the related asset, which is generally between two and five years. Depreciation for property and equipment commences once they are ready for our intended use. Maintenance and repairs are charged to expense as incurred, and improvements and betterments are capitalized. When assets are retired or otherwise disposed of, the cost and accumulated depreciation are removed from the consolidated balance sheet and any resulting gain or loss is reflected in the consolidated statement of operations in the period realized. Leasehold improvements are amortized on a straight-line basis over the shorter of the term of the lease, or the useful life of the assets. Construction in progress is related to property and equipment that has not yet been placed in service for its intended use.
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired in a business combination. Intangible assets resulting from the acquisition of entities are accounted for using the purchase method of accounting based on management’s estimate of the fair value of assets received. Intangible assets are amortized on a straight-line basis over the estimated useful lives which range from two
Impairment Long-Lived Assets	Impairment of Long-Lived AssetsThe Company reviews long-lived assets, including property and equipment and intangible assets, for impairment whenever events or changes in business circumstances indicate that the carrying amount of the assets may not be fully recoverable. Such events and changes may include: significant changes in performance relative to expected operating results, changes in asset use, negative industry or economic trends, and changes in the Company’s business strategy. The Company measures recoverability of these assets by comparing the carrying amounts to the future undiscounted cash flows that the assets or the asset group are expected to generate. If the carrying value of the assets are not recoverable, the impairment recognized is measured as the amount by which the carrying value of the asset exceeds its fair value.
Software Development Costs	Software Development CostsThe Company incurs costs related to developing the Lyft Platform and related support systems. The Company capitalizes development costs related to the Lyft Platform once the preliminary project stage is complete and it is probable that the project will be completed and the software will be used to perform the function intended.
Deferred Offering Costs	Deferred Offering CostsDeferred offering costs, which consist of direct incremental legal, consulting, banking and accounting fees relating to anticipated equity offerings, are capitalized and offset against proceeds upon the consummation of the offerings within stockholders’ equity (deficit). In the event an anticipated offering is terminated, deferred offering costs will be expensed.
Insurance Reserves	Insurance Reserves The Company utilizes both a wholly-owned captive insurance subsidiary and third-party insurance, which may include deductibles and self-insured retentions, to insure or reinsure costs including auto liability, uninsured and underinsured motorist, auto physical damage and general business liabilities up to certain limits. The recorded liabilities reflect the estimated ultimate cost for claims incurred but not paid and claims that have been incurred but not yet reported and any estimable administrative run-out expenses related to the processing of these outstanding claim payments. Liabilities are evaluated for appropriateness with claims reserve valuations provided by an independent third-party actuary on a quarterly basis.
Net Loss Per Share	Net Loss Per Share The Company follows the two-class method when computing net loss per common share when shares are issued that meet the definition of participating securities. The two-class method determines net loss per common share for each class of common stock and participating securities according to dividends declared or accumulated and participation rights in undistributed earnings. The two-class method requires income available to common stockholders for the period to be allocated between common stock and participating securities based upon their respective rights to receive dividends as if all income for the period had been distributed. The Company’s redeemable convertible preferred stock contractually entitles the holders of such shares to participate in dividends but does not contractually require the holders of such shares to participate in the Company’s losses. Basic net loss per share is computed by dividing the net loss by the weighted-average number of shares of common stock outstanding during the period, less shares subject to repurchase. The diluted net loss per share is computed by giving effect to all potentially dilutive securities outstanding for the period. For periods in which the Company reports net losses, diluted net loss per common share attributable to common stockholders is the same as basic net loss per common share attributable to common stockholders, because potentially dilutive common shares are not assumed to have been issued if their effect is anti-dilutive.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Recently Issued Accounting Pronouncements Not Yet Adopted In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-13 “Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” The new guidance amended guidance on reporting credit losses for assets held at amortized cost basis and available-for-sale debt securities. For available-for-sale debt securities, credit losses will be presented as an allowance rather than as a write-down. This standard is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for all entities. The Company is currently assessing the impact of adopting this standard on its consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-13, “Fair Value Measurement (Topic 820).” This standard modifies disclosure requirements related to fair value measurement and is effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted. Implementation on a prospective or retrospective basis varies by specific disclosure requirement. The standard also allows for early adoption of any removed or modified disclosures upon issuance while delaying adoption of the additional disclosures until their effective date. The Company is currently assessing the impact of adopting this standard on its consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-15, “Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract.” This standard aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The implementation costs incurred in a hosting arrangement that is a service contract should be presented as a prepaid asset in the balance sheet and expensed over the term of the hosting arrangement to the same line item in the statements of operations as the costs related to the hosting fees. This standard is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for all entities including adoption in any interim period. The amendments should be applied either retrospectively or prospectively to all implementation costs incurred after adoption. The Company is currently assessing the impact of adopting this standard on its consolidated financial statements. In December 2019, the FASB issued ASU No. 2019-12, “Simplifying the Accounting for Income Taxes (Topic 740)”. This standard simplifies the accounting for income taxes. This standard is effective for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. Early adoption is permitted for all entities. The Company is currently assessing the impact of adopting this standard on its consolidated financial statements. Recently Adopted Accounting Pronouncements In January 2016, the FASB issued ASU No. 2016-01 “Financial Instruments—Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities,” which amends various aspects of the recognition, measurement, presentation, and disclosure of financial instruments. The Company adopted this ASU as of January 1, 2019, which did not have a material impact on its consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, “Leases (Topic 842).” This ASU and subsequently issued amendments require a lessee to recognize leases with a term greater than 12 months on the balance sheet. In July 2018, the FASB issued ASU No. 2018-11, “Targeted Improvements—Leases (Topic 842).” This update provides an optional transition method that allows entities to elect to apply the standard using the modified retrospective approach at its effective date, versus recasting the prior years presented. If elected, an entity would recognize a cumulative-effect adjustment to the opening balance of retained earnings in the year of adoption. Additionally, in July 2018, the FASB issued ASU 2018-10, Codification Improvements to Topic 842, Leases. This update provided additional guidance on the new lease model with improvements in numerous aspects of the guidance in ASC 842 including, but not limited to, implicit rates, reassessment of lease classification, terms and purchase options, investment tax credits, and various other transition guidance. In December 2018, the FASB issued ASU 2018-20, Leases (Topic 842): Narrow-Scope Improvements for Lessors. This update provided amendments to various lease topics including sales taxes collected from lessees, certain lessor costs paid to third parties, and variable payments for contracts with lease and non-lease components. In March 2019, the FASB issued ASU 2019-01, Leases Topics (842) Codification Improvements. The amendments in this update increased transparency and comparability for the recognition of leases and disclosures about leasing transactions. This update provided additional clarity on determining the value of the underlying asset by lessors that are not manufacturers or dealers. Additionally, this update provided guidance on transition disclosures related to leases. The Company adopted these new standards effective as of January 1, 2019 using the transition method that provides for a cumulative-effect adjustment to retained earnings upon adoption. There was no impact on the Company’s accumulated deficit as of January 1, 2019 as a result of the adoption of these standards. The consolidated financial statements for the year ended December 31, 2019 is presented under the new standard, while the comparative periods presented, consistent with the optional practical expedients in transition allowed under Topic 842, are not adjusted and continue to be reported in accordance with the Company’s historical accounting policy. The adoption of the new lease standards resulted in the recognition of operating lease right-of-use assets of $285.6 million and operating lease liabilities, including operating lease liabilities — current, of $314.1 million as of January 1, 2019. In connection with the adoption of these standards, deferred rent of $28.5 million, which was previously recorded in accrued and other current liabilities and in other long-term liabilities on the consolidated balance sheet as of December 31, 2018, was derecognized. See Note 7, “Leases,” for more information. In August 2016, the FASB issued ASU No. 2016-15 “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments.” This standard clarifies the classification of certain cash receipts and cash payments in the statement of cash flows, including debt prepayment or extinguishment costs, settlement of contingent consideration arising from a business combination, insurance settlement proceeds, and distributions from certain equity method investees. The Company adopted this ASU on a retrospective basis as of January 1, 2019, which did not have any impact on its consolidated financial statements.

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
Acquisitions (Tables)	Dec. 31, 2019
Business Combinations [Abstract]
Schedule of Fair Value of Assets Acquired and Liabilities Assumed	The following table summarizes the fair value of the assets acquired and liabilities assumed (in thousands): Cash and cash equivalents $ 7,248 Prepaid expenses and other assets 20,458 Property and equipment 68,312 Identifiable intangible assets 89,800 Total identifiable assets acquired 185,818 Total liabilities assumed 53,357 Net assets acquired 132,461 Goodwill 118,474 Total acquisition consideration $ 250,935
Schedule of Fair Value and Useful Lives of Identified Intangible Assets	An assessment of the fair value of identified intangible assets and their respective useful lives are as follows: Fair Value Estimated Useful Contractual relationships – cities $ 61,100 3-12 User relationships 18,700 3 Developed technology 10,000 1 Total intangible assets $ 89,800

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets, Net (Tables)	12 Months Ended
Goodwill and Intangible Assets, Net (Tables)	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Changes in Carrying Amount of Goodwill	The changes in the carrying amount of goodwill for the years ended December 31, 2019 and 2018 were as follows (in thousands): Balance as of January 1, 2018 $ — Additions 152,085 Balance as of December 31, 2018 $ 152,085 Additions 10,947 Foreign currency translation and other adjustments (4,307) Balance as of December 31, 2019 $ 158,725
Schedule of Intangible Assets, Net	Intangible assets, net consisted of the following as of the dates indicated (in thousands): December 31, 2019 Weighted-average Gross Carrying Accumulated Net Carrying Developed technology and patents 1.6 $ 42,887 $ 26,309 $ 16,578 Contractual relationship – cities and user relationships 7.7 79,800 13,459 66,341 Total intangible assets $ 122,687 $ 39,768 $ 82,919 December 31, 2018 Weighted-average Gross Carrying Accumulated Net Carrying Developed technology and patents 2.6 $ 42,887 $ 3,924 $ 38,963 Contractual relationship – cities and user relationships 8.7 79,800 1,030 78,770 Total intangible assets $ 122,687 $ 4,954 $ 117,733
Schedule of Future Amortization Expense	As of December 31, 2019, future amortization of intangible assets that will be recorded in cost of revenue and operating expenses is estimated as follows (in thousands). Year ended December 31: 2020 $ 24,673 2021 12,589 2022 6,442 2023 5,639 2024 5,639 Thereafter 27,937 Total remaining amortization $ 82,919

Supplemental Financial Statem_2

Supplemental Financial Statement Information (Tables)	12 Months Ended
Supplemental Financial Statement Information (Tables)	Dec. 31, 2019
Balance Sheet Components Disclosure [Abstract]
Summary of Cash Equivalents and Short-Term Investments	The following tables summarize the cost or amortized cost, gross unrealized gain, gross unrealized loss and fair value of the Company’s cash equivalents and short-term investments as of the dates indicated (in thousands): December 31, 2019 Cost or Unrealized Estimated Gains Losses Unrestricted Balances (1) Money market deposit accounts $ 217,523 $ — $ — $ 217,523 Term deposits 135,000 — — 135,000 Certificates of deposit 1,275,750 887 (43) 1,276,594 Commercial paper 876,382 181 (68) 876,495 Corporate bonds 247,359 219 — 247,578 Total unrestricted cash equivalents and short-term investments 2,752,014 1,287 (111) 2,753,190 Restricted Balances (2) Money market funds 19,250 — — 19,250 Money market deposit accounts 7,884 — — 7,884 Term deposits 7,811 — — 7,811 Certificates of deposit 608,578 262 (12) 608,828 Commercial paper 791,087 165 (97) 791,155 Corporate bonds 75,828 80 — 75,908 Total restricted cash equivalents and investments 1,510,438 507 (109) 1,510,836 Total unrestricted and restricted cash equivalents and investments $ 4,262,452 $ 1,794 $ (220) $ 4,264,026 _______________ (1) Excludes $96.9 million of cash, which is included within the $2.9 billion of cash and cash equivalents and short-term investments on the consolidated balance sheets. (2) Excludes $56.4 million of restricted cash, which is included within the $1.6 billion of restricted cash and cash equivalents and restricted short-term investments on the consolidated balance sheets. December 31, 2018 Cost or Unrealized Estimated Gains Losses Unrestricted Balances (1) Money market funds $ 38,528 $ — $ — $ 38,528 Certificates of deposit 497,748 19 (213) 497,554 Commercial paper 1,135,092 38 (409) 1,134,721 Corporate bonds 119,043 19 (23) 119,039 Total unrestricted cash equivalents and short-term investments 1,790,411 76 (645) 1,789,842 Restricted Balances (2) Money market funds 4,620 — — 4,620 Certificates of deposit 307,650 41 (87) 307,604 Commercial paper 624,719 17 (227) 624,509 Corporate bonds 65,616 6 (36) 65,586 Total restricted cash equivalents and investments 1,002,605 64 (350) 1,002,319 Total unrestricted and restricted cash equivalents and investments $ 2,793,016 $ 140 $ (995) $ 2,792,161 _______________ (1) Excludes $248.0 million of cash, which is included within the $2.0 billion of cash and cash equivalents and short-term investments on the consolidated balance sheets. (2) Excludes $50.2 million of restricted cash, which is included within the $1.1 billion of restricted cash and cash equivalents and restricted short-term investments on the consolidated balance sheets.
Schedule of Property and Equipment, Net	Property and equipment, net consisted of the following as of the dates indicated (in thousands): December 31, 2019 2018 Bike fleet $ 124,380 $ 65,985 Leasehold improvements 66,490 39,727 Computer equipment and software 14,026 11,366 Furniture and fixtures 473 262 Construction in progress 25,139 3,629 230,508 120,969 Less: Accumulated depreciation (41,905) (11,712) $ 188,603 $ 109,257
Schedule of Accrued and Other Current Liabilities	Accrued and other current liabilities consisted of the following as of the dates indicated (in thousands): December 31, 2019 2018 Ride-related accruals $ 253,840 $ 188,602 Insurance-related accruals 218,161 98,062 Legal accruals 162,766 81,139 Insurance claims payable and related fees 87,357 65,897 Other 217,741 172,503 $ 939,865 $ 606,203
Summary of Rollforward of the Insurance Reserve	The following table provides a rollforward of the insurance reserve for the periods presented (in thousands): Year Ended December 31, 2019 2018 2017 Beginning balance $ 810,273 $ 376,538 $ 131,951 Losses paid (540,627) (220,936) (91,499) Change in estimates for prior periods 219,163 3,392 — Reserves for current period 889,653 651,279 336,086 Ending balance $ 1,378,462 $ 810,273 $ 376,538

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
Fair Value Measurements (Tables)	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Summary of Financial Instruments Measured at Fair Value on Recurring Basis	The following tables set forth the Company’s financial instruments that were measured at fair value on a recurring basis as of the dates indicated by level within the fair value hierarchy (in thousands): December 31, 2019 Level 1 Level 2 Level 3 Total Unrestricted Balances (1) Certificates of deposit — 1,276,594 — 1,276,594 Commercial paper — 876,495 — 876,495 Corporate bonds — 247,578 — 247,578 Total unrestricted cash equivalents and short-term investments — 2,400,667 — 2,400,667 Restricted Balances (2) Money market funds 19,250 — — 19,250 Certificates of deposit — 608,828 — 608,828 Commercial paper — 791,155 — 791,155 Corporate bonds — 75,908 — 75,908 Total restricted cash equivalents and investments 19,250 1,475,891 — 1,495,141 Total unrestricted and restricted cash equivalents and investments $ 19,250 $ 3,876,558 $ — $ 3,895,808 _______________ (1) $96.9 million of cash, $217.5 million of money market deposit accounts and $135.0 million of term deposits are not subject to recurring fair value measurement and therefore excluded from this table. However, these balances are included within the $2.9 billion of cash and cash equivalents and short-term investments on the consolidated balance sheets. (2) $56.4 million of restricted cash, $7.9 million of a money market deposit account and $7.8 million of a restricted term deposit are not subject to recurring fair value measurement and therefore excluded from this table. However, these balances are included within the $1.6 billion of restricted cash and cash equivalents and restricted short-term investments on the consolidated balance sheets. December 31, 2018 Level 1 Level 2 Level 3 Total Unrestricted Balances (1) Money market funds $ 38,528 $ — $ — $ 38,528 Certificates of deposit — 497,554 — 497,554 Commercial paper — 1,134,721 — 1,134,721 Corporate bonds — 119,039 — 119,039 Total unrestricted cash equivalents and short-term investments 38,528 1,751,314 — 1,789,842 Restricted Balances (2) Money market funds 4,620 — — 4,620 Certificates of deposit — 307,604 — 307,604 Commercial paper — 624,509 — 624,509 Corporate bonds — 65,586 — 65,586 Total restricted cash equivalents and investments 4,620 997,699 — 1,002,319 Total unrestricted and restricted cash equivalents and investments $ 43,148 $ 2,749,013 $ — $ 2,792,161 _______________ (1) $248.0 million of cash is not subject to recurring fair value measurement and therefore excluded from this table. However, these balances are included within the $2.0 billion of cash and cash equivalents and short-term investments on the consolidated balance sheets. (2) $50.2 million of restricted cash is not subject to recurring fair value measurement and therefore excluded from this table. However, these balances are included within the $1.1 billion of restricted cash and cash equivalents and restricted short-term investments on the consolidated balance sheets.

Leases (Tables)

Leases (Tables)	12 Months Ended
Leases (Tables)	Dec. 31, 2019
Leases [Abstract]
Schedule of Lease Position	The table below presents the lease-related assets and liabilities recorded on the consolidated balance sheet (in thousands, except for remaining lease terms and percentages): December 31, 2019 Assets Real Estate $ 316,499 Flexdrive Program 124,759 Total operating lease right-of-use assets $ 441,258 Liabilities Current Real Estate $ 40,729 Flexdrive Program 53,470 Total current operating lease liabilities 94,199 Noncurrent Real Estate 312,323 Flexdrive Program 69,754 Total noncurrent operating lease liabilities 382,077 Total operating lease liabilities $ 476,276 Weighted-average remaining lease term (years) Real Estate 6.8 Flexdrive Program 1.9 Weighted-average discount rate (1) Real Estate 6.6 % Flexdrive Program 6.5 % _______________ (1) Upon adoption of the new lease standard, discount rates used for existing leases were established at January 1, 2019.
Schedule of Lease Costs of Operating Leases	The table below presents certain information related to the lease costs for operating leases for the year ended December 31, 2019 (in thousands): December 31, 2019 Real Estate Flexdrive Total Operating lease cost $ 61,277 $ 54,142 $ 115,419 Short-term lease cost 4,670 — 4,670 Variable lease cost (1) 10,845 5,815 16,660 Total lease cost $ 76,792 $ 59,957 $ 136,749 _______________ (1) Consist primarily of common-area maintenance, taxes and utilities for real estate leases, and certain vehicle related charges under the Flexdrive program.
Schedule of Operating Lease Liabilities	The table below reconciles the undiscounted cash flows for each of the first five years and total of the remaining years to the lease liabilities recorded on the consolidated balance sheet as of December 31, 2019 (in thousands): Real Estate Flexdrive Total Leases 2020 $ 70,308 $ 55,661 $ 125,969 2021 76,681 49,968 126,649 2022 71,104 27,357 98,461 2023 55,147 743 55,890 2024 50,613 — 50,613 Thereafter 134,210 — 134,210 Total minimum lease payments 458,063 133,729 591,792 Less: amount of lease payments representing interest (105,011) (10,505) (115,516) Present value of future minimum lease payments 353,052 123,224 476,276 Less: current obligations under leases (40,729) (53,470) (94,199) Long-term lease obligations $ 312,323 $ 69,754 $ 382,077
Future Minimum Lease Payments	As of December 31, 2018, the future minimum lease payments required under noncancelable operating leases as defined under the previous accounting guidance of ASC Topic 840 were as follows (in thousands): Real Estate Flexdrive Program Total 2019 $ 51,221 $ 30,129 $ 81,350 2020 53,380 34,597 87,977 2021 52,794 6,439 59,233 2022 48,813 — 48,813 2023 and Thereafter 133,670 — 133,670 Total minimum lease payments $ 339,878 $ 71,165 $ 411,043

Commitment and Contingencies (T

Commitment and Contingencies (Tables)	12 Months Ended
Commitment and Contingencies (Tables)	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Schedule of Minimum Payments Under Noncancelable Purchase Commitments	As of December 31, 2019, the future minimum payments under the Company’s noncancelable purchase commitments were as follows (in thousands) (1 ) : 2020 $ 87,740 2021 111,515 2022 39,526 2023 16,519 2024 8,800 Thereafter 28,199 Total future minimum payments $ 292,299 _______________ (1) On November 30, 2018, the Company completed its acquisition of Motivate, a New York headquartered bikeshare company. Over the approximately five years following the transaction, the Company committed to invest an aggregate of $100 million in the bikeshare program for the New York metro area. The Company also assumed certain pre-existing contractual obligations to increase the bike fleets in other locations which are not considered to be material. Due to the uncertainty with respect to the timing of future cash flows associated with these commitments, the Company has not included these commitments in the above table.

Redeemable Convertible Prefer_2

Redeemable Convertible Preferred Stock (Tables)	12 Months Ended
Redeemable Convertible Preferred Stock (Tables)	Dec. 31, 2019
Temporary Equity Disclosure [Abstract]
Schedule of Redeemable Convertible Preferred Stock	The authorized, issued and outstanding shares, issue price, conversion price, liquidation preference, and carrying value of the Company’s redeemable convertible preferred stock as of December 31, 2018 were as follows (in thousands, except for share and per share data): December 31, 2018 Shares Authorized Shares Issued and Outstanding Issue Price Per Conversion Price Liquidation Preference Carrying Value Series Seed 6,063,921 6,063,921 $ 0.23 $ 0.23 $ 1,365 $ 1,332 Series A 8,129,364 8,129,364 0.76 0.76 $ 6,200 $ 6,180 Series B 7,067,771 7,067,771 2.10 2.10 $ 14,860 $ 14,794 Series C 14,479,445 14,479,445 4.25 4.25 $ 61,500 $ 61,440 Series D 24,674,534 24,674,534 10.13 10.13 $ 250,000 $ 249,878 Series E 47,099,094 47,099,094 19.45 19.45 $ 915,870 $ 913,810 Series F 37,263,568 37,263,568 26.79 26.79 $ 998,250 $ 991,336 Series G 18,662,127 18,662,127 32.15 32.15 $ 599,987 $ 599,715 Series H 42,771,492 42,771,492 39.75 39.75 $ 1,700,000 $ 1,699,726 Series I 21,117,584 12,964,393 47.35 47.35 $ 613,915 $ 613,836 227,328,900 219,175,709 $ 5,161,947 $ 5,152,047

Common Stock and Employee Sto_2

Common Stock and Employee Stock Plans (Tables)	12 Months Ended
Common Stock and Employee Stock Plans (Tables)	Dec. 31, 2019
Share-based Payment Arrangement [Abstract]
Schedule of Common Stock Reserved for Future Issuance	The following table summarizes the Company’s shares of common stock reserved for issuance as of December 31, 2019: Options issued and outstanding under the 2008 Plan 2,957,350 RSUs outstanding under the 2008 Plan, the 2018 Plan, and the 2019 Plan 41,685,376 Remaining shares available for future issuance under the 2019 ESPP Plan and the 2019 Plan 60,767,268
Schedule of Stock Options Activity	The summary of stock option activity is as follows (in thousands, except per share data): Options Outstanding Number of Weighted- Weighted- Aggregate (in years) Balance as of December 31, 2018 13,818 $3.27 5.1 $ 609,409 Exercises (10,856) 2.76 Forfeitures (1) 3.23 Cancellations (4) 9.78 Balance as of December 31, 2019 2,957 $5.13 4.7 $ 112,066 Vested and exercisable at December 31, 2019 2,957 $5.13 4.7 $ 112,066
Schedule of Restricted Stock Unit Activity	The summary of restricted stock unit activity is as follows (in thousands, except per share data): Number of Weighted- Aggregate Nonvested units as of December 31, 2018 46,433 $ 32.69 $ 2,199,554 Granted 29,547 61.04 Vested (28,623) 30.63 Canceled (5,672) 48.38 Nonvested units as of December 31, 2019 41,685 $ 52.06 $ 1,793,305
Schedule of Stock-Based Compensation Expense	The Company recorded stock-based compensation expense in the consolidated statements of operations for the periods indicated as follows (in thousands): Year Ended December 31, 2019 2018 2017 Cost of revenue $ 81,321 $ 501 $ 464 Operations and support 75,212 177 2,549 Research and development 971,941 4,107 2,379 Sales and marketing 72,046 261 415 General and administrative 398,791 3,531 3,739 Total stock-based compensation expense $ 1,599,311 $ 8,577 $ 9,546

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
Income Taxes (Tables)	Dec. 31, 2019
Income Tax Disclosure [Abstract]
U.S. and Foreign Components of Loss Before Income Taxes	The components of the provision for income taxes for the periods indicated are as follows (in thousands): Year Ended December 31, 2019 2018 2017 United States $ (2,600,858) $ (900,642) $ (687,743) Foreign 973 (9,955) (2) Loss before income taxes $ (2,599,885) $ (910,597) $ (687,745)
Components of Provision for Income Taxes	The provision for income taxes for the periods indicated are as follows (in thousands): Year Ended December 31, 2019 2018 2017 Current provision Federal $ — $ — $ — State 2,704 1,250 556 Foreign 1,901 116 — Total current $ 4,605 $ 1,366 $ 556 Deferred provision Federal (269) — — State (891) — — Foreign (1,089) (628) — Total deferred (2,249) (628) — Total provision for income taxes $ 2,356 $ 738 $ 556
Reconciliation of Statutory Federal Income Tax Rate to the Effective Rate	A reconciliation of the U.S. federal statutory income tax rates to the Company’s effective tax rate is as follows: Year Ended December 31, 2019 2018 2017 Provision at federal statutory rate 21.0 % 21.0 % 34.0 % State, net of federal benefit 7.6 6.0 3.7 Permanent tax adjustments (0.4) (0.8) (0.6) Federal statutory tax rate change — — (34.8) Stock-based compensation 9.9 0.8 (0.2) Change in valuation allowance (38.1) (27.6) (2.3) Other adjustments (0.2) 0.5 0.1 Provision for income taxes (0.2) % (0.1) % (0.1) %
Schedule of Deferred Tax Assets and Liabilities	The significant components of the Company’s deferred tax assets and liabilities as of the periods indicated were as follows (in thousands): December 31, 2019 2018 Net operating loss carryforward $ 1,173,732 $ 475,823 Insurance reserves 391,250 239,401 Accrued and other liabilities 369,018 83,187 Total deferred tax assets 1,934,000 798,411 State income taxes (92,585) (39,902) Operating lease right of use asset (88,376) — Total deferred tax liabilities (180,961) (39,902) Net deferred tax asset 1,753,039 758,509 Less: Valuation allowance (1,751,118) (761,728) Net deferred tax asset (liability) $ 1,921 $ (3,219)
Summary of Rollforward of Valuation Allowance	A reconciliation of the valuation allowance is as follows (in thousands): Year Ended December 31, 2019 2018 2017 Beginning balance $ 761,728 $ 507,274 $ 491,356 Net changes in deferred tax assets and liabilities 989,390 254,454 15,918 Ending balance $ 1,751,118 $ 761,728 $ 507,274

Net Loss Per Share (Tables)

Net Loss Per Share (Tables)	12 Months Ended
Net Loss Per Share (Tables)	Dec. 31, 2019
Earnings Per Share [Abstract]
Computation of Basic and Diluted Net Loss Per Share	The following table sets forth the computation of basic and diluted net loss per share for the periods indicated (in thousands, except per share data): Year Ended December 31, 2019 2018 2017 Net loss $ (2,602,241) $ (911,335) $ (688,301) Weighted-average shares used in computing net loss per share, basic and diluted 227,498 21,176 19,371 Net loss per share, basic and diluted $ (11.44) $ (43.04) $ (35.53)
Schedule of Outstanding Shares of Common Stock Equivalents Excluded from Computation of Diluted Net Loss Per Share	The following outstanding shares of common stock equivalents were excluded from the computation of diluted net loss per share for the periods presented because including them would have had an anti-dilutive effect (in thousands): As of December 31, 2019 2018 2017 Redeemable convertible preferred stock (on an if-converted basis) — 219,176 199,815 Stock options 2,957 13,818 16,302 Restricted stock units 41,685 46,433 26,052 Restricted stock awards 94 220 — Early exercised options — — 10 Total 44,736 279,647 242,179

Description of Business and B_2

Description of Business and Basis of Presentation - Additional Information (Details) - USD ($)	Apr. 09, 2019	Apr. 02, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Description Of Business And Basis Of Presentation [Line Items]
Price per share (in dollars per share)			$ 43.02	$ 47.37	$ 35.47
Proceeds from issuance of common stock in initial public offering, net of underwriting commissions, offering costs and reimbursements			$ 2,484,029,000	$ 0	$ 0
Offering costs			$ 0	$ 2,100,000
Common stock, shares authorized (in shares)			0	340,000,000
Preferred stock, shares authorized (in shares)			1,000,000,000	0
Common stock, shares outstanding (in shares)			0	22,438,472
Class A Common Stock
Description Of Business And Basis Of Presentation [Line Items]
Underwriting discounts and commissions		$ 70,300,000
Offering costs		$ 7,700,000
Common stock, shares authorized (in shares)			18,000,000,000	0
Common stock, shares outstanding (in shares)		255,007,393	293,793,151	0
Class A Common Stock \| IPO
Description Of Business And Basis Of Presentation [Line Items]
Issuance of common stock in connection with initial public offering, net of offering costs, underwriting discounts and commissions (in shares)		32,500,000
Price per share (in dollars per share)		$ 72
Proceeds from issuance of common stock in initial public offering, net of underwriting commissions, offering costs and reimbursements		$ 2,500,000,000
Class A Common Stock \| Exercise by Underwriters' Option to Purchase Additional Shares
Description Of Business And Basis Of Presentation [Line Items]
Issuance of common stock in connection with initial public offering, net of offering costs, underwriting discounts and commissions (in shares)	2,996,845
Price per share (in dollars per share)	$ 72
Redeemable Convertible Preferred Stock
Description Of Business And Basis Of Presentation [Line Items]
Conversion of stock, shares converted (in shares)		219,175,709
Class B Common Stock
Description Of Business And Basis Of Presentation [Line Items]
Common stock, shares authorized (in shares)			100,000,000	0
Common stock, shares outstanding (in shares)		12,779,709	8,802,629	0

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Details)	Mar. 28, 2019USD ($)	Dec. 31, 2019USD ($)segment	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Jan. 01, 2019USD ($)
Significant Accounting Policies [Line Items]
Number of operating segments \| segment		1
Revenue		$ 3,615,960,000	$ 2,156,616,000	$ 1,059,881,000
Assets		5,691,383,000	3,760,043,000
Passenger referral coupon liability		0	0
Credit and refund payments		33,900,000	41,800,000	26,400,000
Credits and refunds for light vehicle renters		0	0
Advertising expenses		188,300,000	352,300,000	315,600,000
Stock-based compensation	$ 857,200,000	1,599,311,000	8,577,000	9,546,000
Restricted investments		1,361,045,000	863,713,000
Cost of scooters not yet placed in service		9,700,000	23,300,000
Carrying value of scooters placed in service		0	0
Goodwill impairment		0	0	0
Impairment of long-lived assets		0	0	0
Capitalized software development costs		0	0	0
Deferred offering costs		0	2,100,000
Operating lease right of use assets		441,258,000
Operating lease liabilities		476,276,000
Non-US
Significant Accounting Policies [Line Items]
Revenue		0	0	0
Assets		0	0	0
Accounting Standards Update 2016-02
Significant Accounting Policies [Line Items]
Operating lease right of use assets					$ 285,600,000
Operating lease liabilities					314,100,000
Derecognition of deferred rent					$ 28,500,000
Flexdrive Program
Significant Accounting Policies [Line Items]
Sublease revenue		111,300,000
Sublease revenue			54,800,000	0
Operating lease right of use assets		124,000,000
Operating lease liabilities		$ 120,000,000
Minimum
Significant Accounting Policies [Line Items]
Fleet operating costs period		2 years
Estimated useful lives of intangible assets		2 years
Maximum
Significant Accounting Policies [Line Items]
Fleet operating costs period		3 years
Estimated useful lives of intangible assets		12 years
Shared Bikes and Scooters
Significant Accounting Policies [Line Items]
Revenue		$ 0	0
Driver Passenger and Light Vehicle Renter Incentive Programs
Significant Accounting Policies [Line Items]
Reduction of revenue		560,300,000	555,400,000	383,900,000
Sales and marketing expense		$ 381,500,000	$ 299,200,000	$ 155,600,000

Acquisitions - Additional Infor

Acquisitions - Additional Information (Details) $ in Thousands	Nov. 30, 2018USD ($)	Dec. 31, 2019USD ($)businessCombination	Dec. 31, 2018USD ($)businessCombination	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Business Acquisition [Line Items]
Future obligation to purchase capital equipment		$ 292,299		$ 292,299
Motivate
Business Acquisition [Line Items]
Cash consideration transferred in acquisition	$ 250,900
Acquisition costs					$ 2,600
Revenue of acquiree				0	0
Net loss of acquiree				$ 0	$ 0
Purchase obligation commitment period				5 years
Future obligation to purchase capital equipment	$ 100,000
Motivate \| Minimum \| Contractual Relationships - Cities
Business Acquisition [Line Items]
Weighted-average remaining useful life	3 years
Motivate \| Maximum \| Contractual Relationships - Cities
Business Acquisition [Line Items]
Weighted-average remaining useful life	12 years
Other Acquisitions
Business Acquisition [Line Items]
Cash consideration transferred in acquisition			$ 62,000
Number of business combinations completed \| businessCombination		2	2
Cash paid for acquisitions			$ 35,000
Value of redeemable convertible preferred stock issued in acquisitions			25,300
Liabilities incurred related to indemnification			$ 1,700

Acquisitions - Fair Value of th

Acquisitions - Fair Value of the Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Nov. 30, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Goodwill	$ 158,725	$ 152,085		$ 0
Motivate
Business Acquisition [Line Items]
Cash acquired			$ 7,248
Prepaid expenses and other assets			20,458
Property and equipment			68,312
Identifiable intangible assets			89,800
Total identifiable assets acquired			185,818
Total liabilities assumed			53,357
Net assets acquired			132,461
Goodwill			118,474
Total acquisition consideration			$ 250,935

Acquisitions - Fair Value and U

Acquisitions - Fair Value and Useful Lives of Identified Intangible Assets Acquired (Details) - Motivate $ in Thousands	Nov. 30, 2018USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Fair value	$ 89,800
Contractual Relationships - Cities
Acquired Finite-Lived Intangible Assets [Line Items]
Fair value	61,100
User Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Fair value	$ 18,700
Estimated useful life (in years)	3 years
Developed Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Fair value	$ 10,000
Estimated useful life (in years)	1 year
Minimum \| Contractual Relationships - Cities
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful life (in years)	3 years
Maximum \| Contractual Relationships - Cities
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful life (in years)	12 years

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets, Net - Schedule of Changes in Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 152,085	$ 0
Additions	10,947	152,085
Foreign currency translation and other adjustments	(4,307)
Goodwill, ending balance	$ 158,725	$ 152,085

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets, Net - Intangible Assets, Net by Major Class (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Finite-lived intangible assets
Gross carrying amount	$ 122,687	$ 122,687
Accumulated amortization	39,768	4,954
Net carrying amount	$ 82,919	$ 117,733
Developed technology and patents
Finite-lived intangible assets
Weighted-average remaining useful life	1 year 7 months 6 days	2 years 7 months 6 days
Gross carrying amount	$ 42,887	$ 42,887
Accumulated amortization	26,309	3,924
Net carrying amount	$ 16,578	$ 38,963
Contractual relationship – cities and user relationships
Finite-lived intangible assets
Weighted-average remaining useful life	7 years 8 months 12 days	8 years 8 months 12 days
Gross carrying amount	$ 79,800	$ 79,800
Accumulated amortization	13,459	1,030
Net carrying amount	$ 66,341	$ 78,770

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets, Net - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 35.1	$ 4.8

Goodwill and Intangible Asset_6

Goodwill and Intangible Assets, Net - Estimated Amortization Expense for Intangible Assets for Next Five Fiscal Years (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Estimated amortization expense for each of the next five fiscal years
2020	$ 24,673
2021	12,589
2022	6,442
2023	5,639
2024	5,639
Thereafter	27,937
Net carrying amount	$ 82,919	$ 117,733

Supplemental Financial Statem_3

Supplemental Financial Statement Information - Summary of Cash Equivalents and Short-Term Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Cash Equivalents and Short-Term Investments [Line Items]
Unrestricted cash equivalents and short-term investments, cost or amortized cost	$ 2,752,014	$ 1,790,411
Unrestricted cash equivalents and short-term investments, unrealized gains	1,287	76
Unrestricted cash equivalents and short-term investments, unrealized losses	(111)	(645)
Unrestricted cash equivalents and short-term investments, estimated fair value	2,753,190	1,789,842
Restricted cash equivalents and investments, cost or amortized cost	1,510,438	1,002,605
Restricted cash equivalents and investments, unrealized gains	507	64
Restricted cash equivalents and investments, unrealized losses	(109)	(350)
Restricted cash equivalents and investments, estimated fair value	1,510,836	1,002,319
Unrestricted and restricted cash equivalents and investments, cost or amortized cost	4,262,452	2,793,016
Unrestricted and restricted cash equivalents and investments, unrealized gains	1,794	140
Unrestricted and restricted cash equivalents and investments, unrealized losses	(220)	(995)
Total unrestricted and restricted cash equivalents and investments	4,264,026	2,792,161
Money market deposit accounts
Cash Equivalents and Short-Term Investments [Line Items]
Unrestricted cash equivalents and short-term investments, cost or amortized cost	217,523
Unrestricted cash equivalents and short-term investments, unrealized gains	0
Unrestricted cash equivalents and short-term investments, unrealized losses	0
Unrestricted cash equivalents and short-term investments, estimated fair value	217,523
Restricted cash equivalents and investments, cost or amortized cost	7,884
Restricted cash equivalents and investments, unrealized gains	0
Restricted cash equivalents and investments, unrealized losses	0
Restricted cash equivalents and investments, estimated fair value	7,884
Money market funds
Cash Equivalents and Short-Term Investments [Line Items]
Unrestricted cash equivalents and short-term investments, cost or amortized cost		38,528
Unrestricted cash equivalents and short-term investments, unrealized gains		0
Unrestricted cash equivalents and short-term investments, unrealized losses		0
Unrestricted cash equivalents and short-term investments, estimated fair value		38,528
Restricted cash equivalents and investments, cost or amortized cost	19,250	4,620
Restricted cash equivalents and investments, unrealized gains	0	0
Restricted cash equivalents and investments, unrealized losses	0	0
Restricted cash equivalents and investments, estimated fair value	19,250	4,620
Term deposits
Cash Equivalents and Short-Term Investments [Line Items]
Unrestricted cash equivalents and short-term investments, cost or amortized cost	135,000
Unrestricted cash equivalents and short-term investments, unrealized gains	0
Unrestricted cash equivalents and short-term investments, unrealized losses	0
Unrestricted cash equivalents and short-term investments, estimated fair value	135,000
Restricted cash equivalents and investments, cost or amortized cost	7,811
Restricted cash equivalents and investments, unrealized gains	0
Restricted cash equivalents and investments, unrealized losses	0
Restricted cash equivalents and investments, estimated fair value	7,811
Certificates of deposit
Cash Equivalents and Short-Term Investments [Line Items]
Unrestricted cash equivalents and short-term investments, cost or amortized cost	1,275,750	497,748
Unrestricted cash equivalents and short-term investments, unrealized gains	887	19
Unrestricted cash equivalents and short-term investments, unrealized losses	(43)	(213)
Unrestricted cash equivalents and short-term investments, estimated fair value	1,276,594	497,554
Restricted cash equivalents and investments, cost or amortized cost	608,578	307,650
Restricted cash equivalents and investments, unrealized gains	262	41
Restricted cash equivalents and investments, unrealized losses	(12)	(87)
Restricted cash equivalents and investments, estimated fair value	608,828	307,604
Commercial paper
Cash Equivalents and Short-Term Investments [Line Items]
Unrestricted cash equivalents and short-term investments, cost or amortized cost	876,382	1,135,092
Unrestricted cash equivalents and short-term investments, unrealized gains	181	38
Unrestricted cash equivalents and short-term investments, unrealized losses	(68)	(409)
Unrestricted cash equivalents and short-term investments, estimated fair value	876,495	1,134,721
Restricted cash equivalents and investments, cost or amortized cost	791,087	624,719
Restricted cash equivalents and investments, unrealized gains	165	17
Restricted cash equivalents and investments, unrealized losses	(97)	(227)
Restricted cash equivalents and investments, estimated fair value	791,155	624,509
Corporate bonds
Cash Equivalents and Short-Term Investments [Line Items]
Unrestricted cash equivalents and short-term investments, cost or amortized cost	247,359	119,043
Unrestricted cash equivalents and short-term investments, unrealized gains	219	19
Unrestricted cash equivalents and short-term investments, unrealized losses	0	(23)
Unrestricted cash equivalents and short-term investments, estimated fair value	247,578	119,039
Restricted cash equivalents and investments, cost or amortized cost	75,828	65,616
Restricted cash equivalents and investments, unrealized gains	80	6
Restricted cash equivalents and investments, unrealized losses	0	(36)
Restricted cash equivalents and investments, estimated fair value	$ 75,908	$ 65,586

Supplemental Financial Statem_4

Supplemental Financial Statement Information - Additonal Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash And Restricted Cash [Line Items]
Cash and cash equivalents and short-term investments	$ 2,900	$ 2,000
Restricted cash and cash equivalents and restricted short-term investments	1,600	1,100
Property, Plant and Equipment
Cash And Restricted Cash [Line Items]
Depreciation expense	37.9	8.6	$ 2.5
Cash and Cash Equivalents and Short-Term Investments
Cash And Restricted Cash [Line Items]
Cash	96.9	248
Restricted Cash and Cash Equivalents and Restricted Investments
Cash And Restricted Cash [Line Items]
Restricted cash	$ 56.4	$ 50.2

Supplemental Financial Statem_5

Supplemental Financial Statement Information - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 230,508	$ 120,969
Less: Accumulated depreciation	(41,905)	(11,712)
Total property and equipment, net	188,603	109,257
Bike fleet
Property, Plant and Equipment [Line Items]
Property and equipment, gross	124,380	65,985
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	66,490	39,727
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	14,026	11,366
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	473	262
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 25,139	$ 3,629

Supplemental Financial Statem_6

Supplemental Financial Statement Information - Accrued and Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Balance Sheet Components Disclosure [Abstract]
Ride-related accruals	$ 253,840	$ 188,602
Insurance-related accruals	218,161	98,062
Legal accruals	162,766	81,139
Insurance claims payable and related fees	87,357	65,897
Other	217,741	172,503
Total accrued and other current liabilities	$ 939,865	$ 606,203

Supplemental Financial Statem_7

Supplemental Financial Statement Information - Summary of Rollforward of Insurance Reserve (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Insurance Reserves [Roll Forward]
Beginning balance	$ 810,273	$ 376,538	$ 131,951
Losses paid	(540,627)	(220,936)	(91,499)
Change in estimates for prior periods	219,163	3,392	0
Reserves for current period	889,653	651,279	336,086
Ending balance	$ 1,378,462	$ 810,273	$ 376,538

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Financial Instruments Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Total unrestricted and restricted cash equivalents and investments	$ 4,264,026	$ 2,792,161
Fair Value Measurements on a Recurring Basis
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Total unrestricted cash equivalents and short-term investments	2,400,667	1,789,842
Total restricted cash equivalents and investments	1,495,141	1,002,319
Total unrestricted and restricted cash equivalents and investments	3,895,808	2,792,161
Fair Value Measurements on a Recurring Basis \| Level 1
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Total unrestricted cash equivalents and short-term investments	0	38,528
Total restricted cash equivalents and investments	19,250	4,620
Total unrestricted and restricted cash equivalents and investments	19,250	43,148
Fair Value Measurements on a Recurring Basis \| Level 2
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Total unrestricted cash equivalents and short-term investments	2,400,667	1,751,314
Total restricted cash equivalents and investments	1,475,891	997,699
Total unrestricted and restricted cash equivalents and investments	3,876,558	2,749,013
Fair Value Measurements on a Recurring Basis \| Level 3
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Total unrestricted cash equivalents and short-term investments	0	0
Total restricted cash equivalents and investments	0	0
Total unrestricted and restricted cash equivalents and investments	0	0
Fair Value Measurements on a Recurring Basis \| Money market funds
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Total unrestricted cash equivalents and short-term investments		38,528
Total restricted cash equivalents and investments	19,250	4,620
Fair Value Measurements on a Recurring Basis \| Money market funds \| Level 1
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Total unrestricted cash equivalents and short-term investments		38,528
Total restricted cash equivalents and investments	19,250	4,620
Fair Value Measurements on a Recurring Basis \| Money market funds \| Level 2
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Total unrestricted cash equivalents and short-term investments		0
Total restricted cash equivalents and investments	0	0
Fair Value Measurements on a Recurring Basis \| Money market funds \| Level 3
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Total unrestricted cash equivalents and short-term investments		0
Total restricted cash equivalents and investments	0	0
Fair Value Measurements on a Recurring Basis \| Certificates of deposit
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Total unrestricted cash equivalents and short-term investments	1,276,594	497,554
Total restricted cash equivalents and investments	608,828	307,604
Fair Value Measurements on a Recurring Basis \| Certificates of deposit \| Level 1
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Total unrestricted cash equivalents and short-term investments	0	0
Total restricted cash equivalents and investments	0	0
Fair Value Measurements on a Recurring Basis \| Certificates of deposit \| Level 2
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Total unrestricted cash equivalents and short-term investments	1,276,594	497,554
Total restricted cash equivalents and investments	608,828	307,604
Fair Value Measurements on a Recurring Basis \| Certificates of deposit \| Level 3
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Total unrestricted cash equivalents and short-term investments	0	0
Total restricted cash equivalents and investments	0	0
Fair Value Measurements on a Recurring Basis \| Commercial paper
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Total unrestricted cash equivalents and short-term investments	876,495	1,134,721
Total restricted cash equivalents and investments	791,155	624,509
Fair Value Measurements on a Recurring Basis \| Commercial paper \| Level 1
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Total unrestricted cash equivalents and short-term investments	0	0
Total restricted cash equivalents and investments	0	0
Fair Value Measurements on a Recurring Basis \| Commercial paper \| Level 2
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Total unrestricted cash equivalents and short-term investments	876,495	1,134,721
Total restricted cash equivalents and investments	791,155	624,509
Fair Value Measurements on a Recurring Basis \| Commercial paper \| Level 3
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Total unrestricted cash equivalents and short-term investments	0	0
Total restricted cash equivalents and investments	0	0
Fair Value Measurements on a Recurring Basis \| Corporate bonds
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Total unrestricted cash equivalents and short-term investments	247,578	119,039
Total restricted cash equivalents and investments	75,908	65,586
Fair Value Measurements on a Recurring Basis \| Corporate bonds \| Level 1
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Total unrestricted cash equivalents and short-term investments	0	0
Total restricted cash equivalents and investments	0	0
Fair Value Measurements on a Recurring Basis \| Corporate bonds \| Level 2
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Total unrestricted cash equivalents and short-term investments	247,578	119,039
Total restricted cash equivalents and investments	75,908	65,586
Fair Value Measurements on a Recurring Basis \| Corporate bonds \| Level 3
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Total unrestricted cash equivalents and short-term investments	0	0
Total restricted cash equivalents and investments	$ 0	$ 0

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Money market deposit accounts	$ 2,491,805	$ 1,520,180
Cash and cash equivalents and short-term investments	2,900,000	2,000,000
Restricted cash and cash equivalents and restricted short-term investments	1,600,000	1,100,000
Cash and Cash Equivalents and Short-Term Investments
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Cash	96,900	248,000
Cash and Cash Equivalents and Short-Term Investments \| Fair Value, Nonrecurring
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Cash	96,900	248,000
Money market deposit accounts	217,500
Term deposits	135,000
Restricted Cash and Cash Equivalents and Restricted Investments
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Restricted cash	56,400	50,200
Restricted Cash and Cash Equivalents and Restricted Investments \| Fair Value, Nonrecurring
Financial Instruments Measured at Fair Value on a Recurring Basis [Line Items]
Money market deposit accounts	7,900
Term deposits	7,800
Restricted cash	$ 56,400	$ 50,200

Leases - Additional Information

Leases - Additional Information (Details) $ in Millions	12 Months Ended
Leases - Additional Information (Details) $ in Millions	Dec. 31, 2019USD ($)commencedLeaselocation	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Lessee, Lease, Description [Line Items]
Cash payment for lease costs	$ 111.1
Rent expense		$ 33.7	$ 22.8
Minimum
Lessee, Lease, Description [Line Items]
Fleet operating costs period	2 years
Initial term of operating lease not yet commenced	5 years
Maximum
Lessee, Lease, Description [Line Items]
Fleet operating costs period	3 years
Initial term of operating lease not yet commenced	7 years
Real Estate Lease
Lessee, Lease, Description [Line Items]
Number of locations \| location	90
Number of leases commenced having initial lease term of twelve months or longer \| commencedLease	87
Number of lease not yet commenced having initial lease term of twelve months or longer \| commencedLease	3
Real Estate Lease \| Minimum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term of contract	1 month
Lessee, operating lease, option to extend term	1 year
Real Estate Lease \| Maximum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term of contract	10 years
Lessee, operating lease, option to extend term	5 years
Flexdrive Program
Lessee, Lease, Description [Line Items]
Sublease revenue	$ 111.3
Sublease revenue		$ 54.8
Flexdrive Program \| Minimum
Lessee, Lease, Description [Line Items]
Fleet operating costs period	2 years
Flexdrive Program \| Maximum
Lessee, Lease, Description [Line Items]
Fleet operating costs period	3 years

Leases - Schedule of Lease Posi

Leases - Schedule of Lease Position (Details) $ in Thousands	Dec. 31, 2019USD ($)
Lessee, Lease, Description [Line Items]
Total operating lease right-of-use assets	$ 441,258
Total current operating lease liabilities	94,199
Total noncurrent operating lease liabilities	382,077
Total operating lease liabilities	476,276
Real Estate Lease
Lessee, Lease, Description [Line Items]
Total operating lease right-of-use assets	316,499
Total current operating lease liabilities	40,729
Total noncurrent operating lease liabilities	312,323
Total operating lease liabilities	$ 353,052
Weighted-average remaining lease term	6 years 9 months 18 days
Weighted-average discount rate	6.60%
Flexdrive Program
Lessee, Lease, Description [Line Items]
Total operating lease right-of-use assets	$ 124,759
Total current operating lease liabilities	53,470
Total noncurrent operating lease liabilities	69,754
Total operating lease liabilities	$ 123,224
Weighted-average remaining lease term	1 year 10 months 24 days
Weighted-average discount rate	6.50%

Leases - Schedule of Lease Cost

Leases - Schedule of Lease Costs of Operating Leases (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 115,419
Short-term lease cost	4,670
Variable lease cost	16,660
Total lease cost	136,749
Real Estate Lease
Lessee, Lease, Description [Line Items]
Operating lease cost	61,277
Short-term lease cost	4,670
Variable lease cost	10,845
Total lease cost	76,792
Flexdrive Program
Lessee, Lease, Description [Line Items]
Operating lease cost	54,142
Short-term lease cost	0
Variable lease cost	5,815
Total lease cost	$ 59,957

Leases - Schedule of Operating

Leases - Schedule of Operating Lease Liabilities (Details) $ in Thousands	Dec. 31, 2019USD ($)
Lessee, Lease, Description [Line Items]
2020	$ 125,969
2021	126,649
2022	98,461
2023	55,890
2024	50,613
Thereafter	134,210
Total minimum lease payments	591,792
Less: amount of lease payments representing interest	(115,516)
Total operating lease liabilities	476,276
Less: current obligations under leases	(94,199)
Long-term lease obligations	382,077
Real Estate Lease
Lessee, Lease, Description [Line Items]
2020	70,308
2021	76,681
2022	71,104
2023	55,147
2024	50,613
Thereafter	134,210
Total minimum lease payments	458,063
Less: amount of lease payments representing interest	(105,011)
Total operating lease liabilities	353,052
Less: current obligations under leases	(40,729)
Long-term lease obligations	312,323
Flexdrive Program
Lessee, Lease, Description [Line Items]
2020	55,661
2021	49,968
2022	27,357
2023	743
2024	0
Thereafter	0
Total minimum lease payments	133,729
Less: amount of lease payments representing interest	(10,505)
Total operating lease liabilities	123,224
Less: current obligations under leases	(53,470)
Long-term lease obligations	$ 69,754

Leases - Future Minimum lease P

Leases - Future Minimum lease Payments Under ASC Topic 840 (Details) $ in Thousands	Dec. 31, 2018USD ($)
Operating Leased Assets [Line Items]
2019	$ 81,350
2020	87,977
2021	59,233
2022	48,813
2023 and Thereafter	133,670
Total minimum lease payments	411,043
Real Estate Lease
Operating Leased Assets [Line Items]
2019	51,221
2020	53,380
2021	52,794
2022	48,813
2023 and Thereafter	133,670
Total minimum lease payments	339,878
Flexdrive Program
Operating Leased Assets [Line Items]
2019	30,129
2020	34,597
2021	6,439
2022	0
2023 and Thereafter	0
Total minimum lease payments	$ 71,165

Commitment and Contingencies -

Commitment and Contingencies - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	May 31, 2019	Jan. 31, 2019	Dec. 31, 2018	Nov. 30, 2018	Mar. 31, 2018	Jan. 31, 2017
Commitments And Contingencies [Line Items]
Minimum amount due in next year	$ 87,740,000
Minimum amount due in second year	111,515,000
Minimum amount due in third year	39,526,000
Future obligation to purchase capital equipment	292,299,000
Letters of credit outstanding	55,200,000			$ 48,800,000
Unemployment insurance assessment							$ 9,500,000
Unemployment insurance assessment after personal income tax	$ 6,600,000
Motivate
Commitments And Contingencies [Line Items]
Purchase obligation commitment period	5 years
Future obligation to purchase capital equipment					$ 100,000,000
Web-Hosting Service Providers
Commitments And Contingencies [Line Items]
Payment for amended arrangement	$ 116,500,000
Divvy Bike Share Program
Commitments And Contingencies [Line Items]
Contractual obligation		$ 7,500,000
Payment for amended arrangement	$ 18,200,000
Future obligation to purchase capital equipment		$ 50,000,000
Minimum \| Web-Hosting Service Providers
Commitments And Contingencies [Line Items]
Contractual obligation			$ 300,000,000			$ 150,000,000
Minimum amount due in next year			80,000,000
Minimum amount due in second year			80,000,000
Minimum amount due in third year			$ 80,000,000

Commitment and Contingencies _2

Commitment and Contingencies - Schedule of Minimum Payments Under Noncancelable Purchase Commitments (Details) $ in Thousands	Dec. 31, 2019USD ($)
Purchase Obligation, Fiscal Year Maturity [Abstract]
2020	$ 87,740
2021	111,515
2022	39,526
2023	16,519
2024	8,800
Thereafter	28,199
Total future minimum payments	$ 292,299

Redeemable Convertible Prefer_3

Redeemable Convertible Preferred Stock - Additional Information (Details)	Apr. 02, 2019shares	Dec. 31, 2019USD ($)	Dec. 31, 2016USD ($)	Mar. 28, 2019vote$ / sharesshares
Class of Stock [Line Items]
Voting power percentage of total outstanding stock		50.00%
Non-cash settlement value		$ 5,152,047,000
Series H
Class of Stock [Line Items]
Redeemable convertible preferred stock, voting interest required for approval		71.00%
Class A Common Stock
Class of Stock [Line Items]
Conversion of convertible preferred stock to common stock in connection with direct listing (in shares) \| shares	219,200,000
Redeemable Convertible Preferred Stock
Class of Stock [Line Items]
Number of votes for each share of common stock \| vote				1
Dividends declared and paid		$ 0
Warrant To Purchase Series E Redeemable Convertible Preferred Stock
Class of Stock [Line Items]
Number of shares subject to purchase from warrant (in shares) \| shares				2,571,275
Exercise price of warrants (in dollars per share) \| $ / shares				$ 19.45
Fair value gain from issuance of redeemable preferred stock warrants			$ 2,900,000
Non-cash settlement value			$ 8,100,000

Redeemable Convertible Prefer_4

Redeemable Convertible Preferred Stock - Schedule of Convertible Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Class of Stock [Line Items]
Redeemable convertible preferred stock, shares authorized (in shares)	0	227,328,900
Redeemable convertible preferred stock, shares issued (in shares)	0	219,175,709
Redeemable convertible preferred stock, shares outstanding (in shares)	0	219,175,709
Redeemable convertible preferred stock, liquidation preference		$ 5,161,947
Redeemable convertible preferred stock, carrying value	$ 0	$ 5,152,047
Series Seed
Class of Stock [Line Items]
Redeemable convertible preferred stock, shares authorized (in shares)		6,063,921
Redeemable convertible preferred stock, shares issued (in shares)		6,063,921
Redeemable convertible preferred stock, shares outstanding (in shares)		6,063,921
Redeemable convertible preferred stock, issue price (in dollars per share)		$ 0.23
Redeemable convertible preferred stock, per conversion price (in dollars per share)		$ 0.23
Redeemable convertible preferred stock, liquidation preference		$ 1,365
Redeemable convertible preferred stock, carrying value		$ 1,332
Series A
Class of Stock [Line Items]
Redeemable convertible preferred stock, shares authorized (in shares)		8,129,364
Redeemable convertible preferred stock, shares issued (in shares)		8,129,364
Redeemable convertible preferred stock, shares outstanding (in shares)		8,129,364
Redeemable convertible preferred stock, issue price (in dollars per share)		$ 0.76
Redeemable convertible preferred stock, per conversion price (in dollars per share)		$ 0.76
Redeemable convertible preferred stock, liquidation preference		$ 6,200
Redeemable convertible preferred stock, carrying value		$ 6,180
Series B
Class of Stock [Line Items]
Redeemable convertible preferred stock, shares authorized (in shares)		7,067,771
Redeemable convertible preferred stock, shares issued (in shares)		7,067,771
Redeemable convertible preferred stock, shares outstanding (in shares)		7,067,771
Redeemable convertible preferred stock, issue price (in dollars per share)		$ 2.10
Redeemable convertible preferred stock, per conversion price (in dollars per share)		$ 2.10
Redeemable convertible preferred stock, liquidation preference		$ 14,860
Redeemable convertible preferred stock, carrying value		$ 14,794
Series C
Class of Stock [Line Items]
Redeemable convertible preferred stock, shares authorized (in shares)		14,479,445
Redeemable convertible preferred stock, shares issued (in shares)		14,479,445
Redeemable convertible preferred stock, shares outstanding (in shares)		14,479,445
Redeemable convertible preferred stock, issue price (in dollars per share)		$ 4.25
Redeemable convertible preferred stock, per conversion price (in dollars per share)		$ 4.25
Redeemable convertible preferred stock, liquidation preference		$ 61,500
Redeemable convertible preferred stock, carrying value		$ 61,440
Series D
Class of Stock [Line Items]
Redeemable convertible preferred stock, shares authorized (in shares)		24,674,534
Redeemable convertible preferred stock, shares issued (in shares)		24,674,534
Redeemable convertible preferred stock, shares outstanding (in shares)		24,674,534
Redeemable convertible preferred stock, issue price (in dollars per share)		$ 10.13
Redeemable convertible preferred stock, per conversion price (in dollars per share)		$ 10.13
Redeemable convertible preferred stock, liquidation preference		$ 250,000
Redeemable convertible preferred stock, carrying value		$ 249,878
Series E
Class of Stock [Line Items]
Redeemable convertible preferred stock, shares authorized (in shares)		47,099,094
Redeemable convertible preferred stock, shares issued (in shares)		47,099,094
Redeemable convertible preferred stock, shares outstanding (in shares)		47,099,094
Redeemable convertible preferred stock, issue price (in dollars per share)		$ 19.45
Redeemable convertible preferred stock, per conversion price (in dollars per share)		$ 19.45
Redeemable convertible preferred stock, liquidation preference		$ 915,870
Redeemable convertible preferred stock, carrying value		$ 913,810
Series F
Class of Stock [Line Items]
Redeemable convertible preferred stock, shares authorized (in shares)		37,263,568
Redeemable convertible preferred stock, shares issued (in shares)		37,263,568
Redeemable convertible preferred stock, shares outstanding (in shares)		37,263,568
Redeemable convertible preferred stock, issue price (in dollars per share)		$ 26.79
Redeemable convertible preferred stock, per conversion price (in dollars per share)		$ 26.79
Redeemable convertible preferred stock, liquidation preference		$ 998,250
Redeemable convertible preferred stock, carrying value		$ 991,336
Series G
Class of Stock [Line Items]
Redeemable convertible preferred stock, shares authorized (in shares)		18,662,127
Redeemable convertible preferred stock, shares issued (in shares)		18,662,127
Redeemable convertible preferred stock, shares outstanding (in shares)		18,662,127
Redeemable convertible preferred stock, issue price (in dollars per share)		$ 32.15
Redeemable convertible preferred stock, per conversion price (in dollars per share)		$ 32.15
Redeemable convertible preferred stock, liquidation preference		$ 599,987
Redeemable convertible preferred stock, carrying value		$ 599,715
Series H
Class of Stock [Line Items]
Redeemable convertible preferred stock, shares authorized (in shares)		42,771,492
Redeemable convertible preferred stock, shares issued (in shares)		42,771,492
Redeemable convertible preferred stock, shares outstanding (in shares)		42,771,492
Redeemable convertible preferred stock, issue price (in dollars per share)		$ 39.75
Redeemable convertible preferred stock, per conversion price (in dollars per share)		$ 39.75
Redeemable convertible preferred stock, liquidation preference		$ 1,700,000
Redeemable convertible preferred stock, carrying value		$ 1,699,726
Series I
Class of Stock [Line Items]
Redeemable convertible preferred stock, shares authorized (in shares)		21,117,584
Redeemable convertible preferred stock, shares issued (in shares)		12,964,393
Redeemable convertible preferred stock, shares outstanding (in shares)		12,964,393
Redeemable convertible preferred stock, issue price (in dollars per share)		$ 47.35
Redeemable convertible preferred stock, per conversion price (in dollars per share)		$ 47.35
Redeemable convertible preferred stock, liquidation preference		$ 613,915
Redeemable convertible preferred stock, carrying value		$ 613,836
Redeemable Convertible Preferred Stock
Class of Stock [Line Items]
Redeemable convertible preferred stock, shares outstanding (in shares)	0	219,176,000	199,815,000	144,778,000
Redeemable convertible preferred stock, carrying value	$ 0	$ 5,152,047	$ 4,284,049	$ 2,238,770

Common Stock and Employee Sto_3

Common Stock and Employee Stock Plans - Additional Information (Details)	Jan. 01, 2020shares	Mar. 28, 2019USD ($)shares	Mar. 31, 2019	Mar. 31, 2019USD ($)shares	Dec. 31, 2019USD ($)vote$ / sharesshares	Dec. 31, 2018USD ($)$ / sharesshares	Dec. 31, 2017USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Voting power percentage of total outstanding stock					50.00%
Stock options granted (in shares)					0	0
Intrinsic value of stock options exercised \| $					$ 617,400,000	$ 85,000,000	$ 25,800,000
Fair value of common stock (in dollars per share) \| $ / shares					$ 43.02	$ 47.37	$ 35.47
Issuance of common stock upon exercise of stock options (in shares)					10,856,000
Withholding tax adjustment \| $					$ 942,895,000	$ 0	$ 0
Stock-based compensation expense \| $					1,599,311,000	8,577,000	$ 9,546,000
Aggregate unrecognized compensation cost \| $					$ 3,900,000	$ 9,600,000
Executives
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued in business combination (in shares)						241,390
Aggregate grant-date fair value \| $						$ 11,400,000
Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, number of votes per share \| vote					1
Class B Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, number of votes per share \| vote					20
Scenario, Forecast
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in number of shares reserved for future issuance (in shares)	35,000,000
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance (in shares)					41,685,376
Withholding tax adjustment (in shares)					10,777,331
Withholding tax adjustment \| $					$ 719,500,000
Aggregate grant-date fair value \| $					$ 1,793,305,000	2,199,554,000
Number of shares vested (in shares)					28,623,000
Aggregate grant-date fair value, weighted average period					2 years 7 months 6 days
Restricted Stock Units \| Founder
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Withholding tax adjustment (in shares)		3,617,460
Withholding tax adjustment \| $		$ 223,500,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant price of stock options, percentage of fair market value					100.00%
Common stock reserved for issuance (in shares)					2,957,350
Aggregate grant-date fair value, weighted average period					8 months 12 days
Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense \| $					$ 6,000,000	$ 1,400,000
Aggregate unrecognized compensation cost \| $					$ 1,100,000,000
Aggregate grant-date fair value, weighted average period					1 year 7 months 6 days
Restricted Stock Awards \| Executives
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares vested (in shares)					146,373	20,989
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of common stock upon exercise of stock options (in shares)				3,162,797		2,254,000	1,181,000
Value of stock during the period \| $				$ 205,600,000
Number of shares issued in business combination (in shares)						241,000
2008 Equity Incentive Plan \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Voting power percentage of total outstanding stock					10.00%
2008 Equity Incentive Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Voting power percentage of total outstanding stock					110.00%
2008 Equity Incentive Plan \| Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					25.00%
Maximum term					7 years
2008 Equity Incentive Plan \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					25.00%
2018 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance (in shares)					75,504,222
Additional common stock reserved for issuance (in shares) \| $					$ 11,836,692
2018 Equity Incentive Plan \| Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage					25.00%
Maximum term					7 years
2019 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance (in shares)					44,000,000
2019 Equity Incentive Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance (in shares)					80,604,678
2019 Equity Incentive Plan \| Scenario, Forecast \| Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of common stock outstanding	5.00%
2019 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance (in shares)					6,000,000
Percentage of earnings for purchase of common stock			15.00%	15.00%
Offering periods			12 months
Common stock purchased (in shares)					403,831
2019 Employee Stock Purchase Plan \| Scenario, Forecast
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in number of shares reserved for future issuance (in shares)	7,000,000
Percentage of common stock outstanding	1.00%

Common Stock and Employee Sto_4

Common Stock and Employee Stock Plans - Common Stock Reserved for Future Issuance (Details)	Dec. 31, 2019shares
Options issued and outstanding under the 2008 Plan
Class of Stock [Line Items]
Common stock reserved for issuance (in shares)	2,957,350
RSUs outstanding under the 2008 Plan, the 2018 Plan, and the 2019 Plan
Class of Stock [Line Items]
Common stock reserved for issuance (in shares)	41,685,376
Remaining shares available for future issuance under the 2019 ESPP Plan and the 2019 Plan
Class of Stock [Line Items]
Common stock reserved for issuance (in shares)	60,767,268

Common Stock and Employee Sto_5

Common Stock and Employee Stock Plans - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Stock options outstanding, beginning balance (in shares)	13,818
Exercised (in shares)	(10,856)
Forfeitures (in shares)	(1)
Cancellations (in shares)	(4)
Stock options outstanding, ending balance (in shares)	2,957	13,818
Stock options vested and exercisable (in shares)	2,957
Weighted-average exercise price per share
Stock options outstanding, weighted-average exercise price, beginning balance (in dollars per share)	$ 3.27
Exercised (in dollars per share)	2.76
Forfeitures (in dollars per share)	3.23
Cancellations (in dollars per share)	9.78
Stock options outstanding, weighted-average exercise price, ending balance (in dollars per share)	5.13	$ 3.27
Stock options vested and exercisable, weighted-average exercise price (in dollars per share)	$ 5.13
Stock options outstanding, weighted-average remaining contractual term	4 years 8 months 12 days	5 years 1 month 6 days
Stock options vested and exercisable, weighted-average remaining contractual term	4 years 8 months 12 days
Outstanding, aggregate intrinsic value	$ 112,066	$ 609,409
Vested and exercisable, aggregate intrinsic value	$ 112,066

Common Stock and Employee Sto_6

Common Stock and Employee Stock Plans - Schedule of Restricted Stock Units (Details) - Restricted Stock Units - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Number of shares
Nonvested units at beginning of period (in shares)	46,433
Granted (in shares)	29,547
Vested (in shares)	(28,623)
Canceled (in shares)	(5,672)
Nonvested units at end of period (in shares)	41,685	46,433
Weighted-average grant date fair value (per share)
Nonvested units at beginning of period (in dollars per share)	$ 32.69
Granted (in dollars per share)	61.04
Vested (in dollars per share)	30.63
Canceled (in dollars per share)	48.38
Nonvested units at end of period (in dollars per share)	$ 52.06	$ 32.69
Nonvested units, aggregate intrinsic value	$ 1,793,305	$ 2,199,554

Common Stock and Employee Sto_7

Common Stock and Employee Stock Plans - Schedule of Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	$ 1,599,311	$ 8,577	$ 9,546
Cost of revenue
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	81,321	501	464
Operations and support
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	75,212	177	2,549
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	971,941	4,107	2,379
Sales and marketing
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	72,046	261	415
General and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation expense	$ 398,791	$ 3,531	$ 3,739

Tender Offer (Details)

Tender Offer (Details) - Tender Offer - USD ($) $ / shares in Units, $ in Millions	1 Months Ended
	Apr. 30, 2018	Mar. 31, 2018
Subsidiary, Sale of Stock [Line Items]
Number of shares available for issue (in shares)		2,207,792
Sale price of stock (in dollars per share)		$ 38.50
Number of shares sold (in shares)	1,523,532
Aggregate proceeds from sale of stock	$ 58.7

Income Taxes - U.S. and Foreign

Income Taxes - U.S. and Foreign Components of Loss Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
United States	$ (2,600,858)	$ (900,642)	$ (687,743)
Foreign	973	(9,955)	(2)
Loss before income taxes	$ (2,599,885)	$ (910,597)	$ (687,745)

Income Taxes - Components of Pr

Income Taxes - Components of Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current provision
Federal	$ 0	$ 0	$ 0
State	2,704	1,250	556
Foreign	1,901	116	0
Total current	4,605	1,366	556
Deferred provision
Federal	(269)	0	0
State	(891)	0	0
Foreign	(1,089)	(628)	0
Total deferred	(2,249)	(628)	0
Total provision for income taxes	$ 2,356	$ 738	$ 556

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Statutory Federal Income Tax Rate to the Effective Rate (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Provision at federal statutory rate	21.00%	21.00%	34.00%
State, net of federal benefit	7.60%	6.00%	3.70%
Permanent tax adjustments	(0.40%)	(0.80%)	(0.60%)
Federal statutory tax rate change	0	0	(0.348)
Stock-based compensation	9.90%	0.80%	(0.20%)
Change in valuation allowance	(38.10%)	(27.60%)	(2.30%)
Other adjustments	(0.20%)	0.50%	0.10%
Provision for income taxes	(0.20%)	(0.10%)	(0.10%)

Income Taxes - Schedule of Defe

Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Net operating loss carryforward	$ 1,173,732	$ 475,823
Insurance reserves	391,250	239,401
Accrued and other liabilities	369,018	83,187
Total deferred tax assets	1,934,000	798,411
State income taxes	(92,585)	(39,902)
Operating lease right of use asset	(88,376)
Total deferred tax liabilities	(180,961)	(39,902)
Net deferred tax asset	1,753,039	758,509
Less: Valuation allowance	(1,751,118)	(761,728)	$ (507,274)	$ (491,356)
Net deferred tax asset (liability)	$ 1,921
Net deferred tax asset (liability)		$ 3,219

Income Taxes - Summary of Rollf

Income Taxes - Summary of Rollforward of Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Valuation Allowance, Deferred Tax Asset [Roll Forward]
Valuation allowance, beginning balance	$ 761,728	$ 507,274	$ 491,356
Net changes in deferred tax assets and liabilities	989,390	254,454	15,918
Valuation allowance, ending balance	$ 1,751,118	$ 761,728	$ 507,274

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes [Line Items]
Increase in valuation allowance	$ 989,390	$ 254,454	$ 15,918
Unrecognized tax benefits	0	$ 0	$ 0
Federal
Income Taxes [Line Items]
Operating loss carryforwards	4,200,000
State
Income Taxes [Line Items]
Operating loss carryforwards	3,800,000
Foreign
Income Taxes [Line Items]
Operating loss carryforwards	$ 8,300

Net Loss Per Share - Computatio

Net Loss Per Share - Computation of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Earnings Per Share [Abstract]
Net loss	$ (2,602,241)	$ (911,335)	$ (688,301)
Weighted-average shares used in computing net loss per share, basic and diluted (in shares)	227,498,000	21,176,000	19,371,000
Net loss per share, basic and diluted (in dollars per share)	$ (11.44)	$ (43.04)	$ (35.53)

Net Loss Per Share - Schedule o

Net Loss Per Share - Schedule of Outstanding Shares of Common Stock Equivalents Excluded from Computation of Diluted Net Loss Per Share (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, total (in shares)	44,736	279,647	242,179
Redeemable Convertible Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, total (in shares)	0	219,176	199,815
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, total (in shares)	2,957	13,818	16,302
Restricted Stock Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, total (in shares)	41,685	46,433	26,052
Restricted Stock Awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, total (in shares)	94	220	0
Early Exercised Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, total (in shares)	0	0	10

Related-Party Transactions - Ad

Related-Party Transactions - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Proceeds from issuance of redeemable convertible preferred stock	$ 0	$ 842,658,000	$ 2,045,279,000
Advertising Related and Other Services
Related Party Transaction [Line Items]
Purchase of marketing services	18,100,000	92,400,000	74,400,000
Marketing Services
Related Party Transaction [Line Items]
Purchase of marketing services	1,900,000	4,000,000	800,000
Redeemable Convertible Preferred Stock Issuance \| Affiliated with Significant Stockholder
Related Party Transaction [Line Items]
Proceeds from issuance of redeemable convertible preferred stock	$ 0	$ 0	$ 400,000,000

Subsequent Events (Details)

Subsequent Events (Details) $ in Thousands	Feb. 07, 2020USD ($)	Jan. 31, 2020employee	Dec. 31, 2019USD ($)
Subsequent Event [Line Items]
Operating lease right of use assets			$ 441,258
Operating lease liabilities			476,276
Flexdrive Program
Subsequent Event [Line Items]
Operating lease right of use assets			124,000
Operating lease liabilities			$ 120,000
Subsequent Event
Subsequent Event [Line Items]
Number of positions eliminated \| employee		90
Percentage of positions eliminated		1.60%
Subsequent Event \| Flexdrive Program
Subsequent Event [Line Items]
Cash consideration transferred in acquisition	$ 20,000

Uncategorized Items - lyft-2019

Label	Element	Value
Restricted Cash Included In Prepaid Expenses And Other Current Assets	lyft_RestrictedCashIncludedInPrepaidExpensesAndOtherCurrentAssets	$ 1,422,000
Restricted Cash Included In Prepaid Expenses And Other Current Assets	lyft_RestrictedCashIncludedInPrepaidExpensesAndOtherCurrentAssets	1,170,000
Restricted Cash Included In Prepaid Expenses And Other Current Assets	lyft_RestrictedCashIncludedInPrepaidExpensesAndOtherCurrentAssets	0
Restricted Cash and Cash Equivalents	us-gaap_RestrictedCashAndCashEquivalents	204,976,000
Restricted Cash and Cash Equivalents	us-gaap_RestrictedCashAndCashEquivalents	187,374,000
Restricted Cash and Cash Equivalents	us-gaap_RestrictedCashAndCashEquivalents	$ 72,817,000