Uber (UBER) 10-Q 9 Aug 19 2019 Q2 Quarterly report Financial data

Cover

Cover - shares	6 Months Ended
	Jun. 30, 2019	Jul. 30, 2019
Cover page.
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2019
Document Transition Report	false
Entity File Number	001-38902
Entity Registrant Name	UBER TECHNOLOGIES, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	45-2647441
Entity Address, Address Line One	1455 Market Street, 4th Floor
Entity Address, City or Town	San Francisco
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94103
City Area Code	415
Local Phone Number	612-8582
Title of each class	Common Stock, par value $0.00001 per share
Trading Symbol	UBER
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		1,700,003,601
Entity Central Index Key	0001543151
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Assets
Cash and cash equivalents	$ 11,744	$ 6,406
Restricted cash and cash equivalents	137	67
Accounts receivable, net of allowance of $34 and $39, respectively	1,290	919
Prepaid expenses and other current assets	1,129	860
Assets held for sale	0	406
Total current assets	14,300	8,658
Restricted cash and cash equivalents	1,809	1,736
Investments	10,415	10,355
Equity method investments	1,370	1,312
Property and equipment, net	1,447	1,641
Operating lease right-of-use assets	1,337
Intangible assets, net	78	82
Goodwill	167	153
Other assets	57	51
Total assets	30,980	23,988
Liabilities, mezzanine equity and stockholders’ equity (deficit)
Accounts payable	167	150
Short-term insurance reserves	977	941
Operating lease liabilities, current	180
Accrued and other current liabilities	4,246	3,157
Liabilities held for sale	0	11
Total current liabilities	5,570	4,259
Long-term insurance reserves	2,217	1,996
Long-term debt, net of current portion	4,526	6,869
Operating lease liabilities, non-current	1,274
Other long-term liabilities	1,485	4,072
Total liabilities	15,072	17,196
Commitments and contingencies (Note 14)
Mezzanine equity
Redeemable non-controlling interest	(14)	0
Redeemable convertible preferred stock, $0.00001 par value, 946,246 and zero shares authorized, 903,607 and zero shares issued and outstanding, respectively; aggregate liquidation preference of $14 and $0, respectively	0	14,177
Stockholders’ equity (deficit)
Common stock, $0.00001 par value, 2,696,114 and 5,000,000 shares authorized, 457,189 and 1,697,614 shares issued and outstanding, respectively	0	0
Additional paid-in capital	30,193	668
Accumulated other comprehensive loss	(167)	(188)
Accumulated deficit	(14,104)	(7,865)
Total stockholders’ equity (deficit)	15,922	(7,385)
Total liabilities, mezzanine equity, and stockholders’ equity (deficit)	$ 30,980	$ 23,988

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Allowance for accounts receivable	$ 39	$ 34
Par value (in dollars per share)	$ 0.00001	$ 0.00001
Preferred share authorized (in shares)	0	946,246,000
Preferred shares issued (in shares)	0	903,607,000
Preferred shares outstanding (in shares)	0	903,607,000
Aggregate liquidation preference	$ 0	$ 14
Common stock par value (in dollars per share)	$ 0.00001	$ 0.00001
Common stock shares authorized (in shares)	5,000,000,000	2,696,114,000
Common stock shares issued (in shares)	1,697,614,000	457,189,000
Common stock shares outstanding (in shares)	1,697,614,000	457,189,000

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Revenue	$ 3,166	$ 2,768	$ 6,265	$ 5,352
Costs and expenses
Cost of revenue, exclusive of depreciation and amortization shown separately below	1,740	1,342	3,421	2,498
Operations and support	864	349	1,298	721
Sales and marketing	1,222	715	2,262	1,392
Research and development	3,064	365	3,473	705
General and administrative	1,638	638	2,061	1,067
Depreciation and amortization	123	98	269	186
Total costs and expenses	8,651	3,507	12,784	6,569
Loss from operations	(5,485)	(739)	(6,519)	(1,217)
Interest expense	(151)	(160)	(368)	(292)
Other income (expense), net	398	63	658	5,000
Income (loss) before income taxes and loss from equity method investment	(5,238)	(836)	(6,229)	3,491
Provision for (benefit from) income taxes	(2)	28	17	604
Loss from equity method investment, net of tax	(10)	(14)	(16)	(17)
Net income (loss) including redeemable non-controlling interest	(5,246)	(878)	(6,262)	2,870
Less: net loss attributable to redeemable non-controlling interest, net of tax	(10)	0	(14)	0
Net income (loss) attributable to Uber Technologies, Inc.	$ (5,236)	$ (878)	$ (6,248)	$ 2,870
Net income (loss) per share attributable to Uber Technologies, Inc. common stockholders:
Basic (in dollars per share)	$ (4.72)	$ (1.99)	$ (7.97)	$ 1.33
Diluted (in dollars per share)	$ (4.72)	$ (2.01)	$ (7.98)	$ 1.20
Weighted-average shares used to compute net income (loss) per share attributable to common stockholders:
Basic (in shares)	1,110,704	440,958	783,900	439,022
Diluted (in shares)	1,110,704	441,408	783,982	476,394

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss) including redeemable non-controlling interest	$ (5,246)	$ (878)	$ (6,262)	$ 2,870
Other comprehensive income (loss), net of tax:
Change in foreign currency translation adjustment	71	(58)	17	(65)
Change in unrealized gain (loss) on investments in available-for-sale securities	8	39	4	39
Other comprehensive income (loss), net of tax	79	(19)	21	(26)
Comprehensive income (loss) including redeemable non-controlling interest	(5,167)	(897)	(6,241)	2,844
Less: Comprehensive loss attributable to redeemable non-controlling interest	(10)	0	(14)	0
Comprehensive income (loss) attributable to Uber Technologies, Inc.	$ (5,157)	$ (897)	$ (6,227)	$ 2,844

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF MEZZANIE EQUITY AND STOCKHOLDERS' EQUITY (DEFICIT) - USD ($) shares in Thousands, $ in Millions	Total	Series G Redeemable Convertible Preferred Stock	Redeemable Non-Controlling Interest	Redeemable Convertible Preferred Stock	Redeemable Convertible Preferred StockSeries G Redeemable Convertible Preferred Stock	Common Stock	Additional Paid-In Capital	Additional Paid-In CapitalSeries G Redeemable Convertible Preferred Stock	Accumulated Other Comprehensive Loss	Accumulated Deficit
Mezzanine Equity, Amount at Dec. 31, 2017			$ 0	$ 12,210
Mezzanine Equity, Shares at Dec. 31, 2017				863,305
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance of Series G redeemable convertible preferred stock, net of issuance costs				$ 1,500
Issuance of Series G redeemable convertible preferred stock, net of issuance costs (in shares)				30,755
Mezzanine Equity, Amount at Mar. 31, 2018			0	$ 13,710
Mezzanine Equity, Shares at Mar. 31, 2018				894,060
Stockholders' equity, beginning balance at Dec. 31, 2017	$ (8,557)					$ 0	$ 320		$ (3)	$ (8,874)
Shares, outstanding at Dec. 31, 2017						443,394
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of common stock warrants	1					$ 0	1
Exercise of common stock warrants (in shares)						31
Repurchase of outstanding shares	5					$ 0				5
Repurchase of outstanding stock (in shares)						(1,707)
Issuance of common stock from stock option exercise and restricted stock awards	15					$ 0	15
Issuance of common stock from stock option exercise and restricted stock awards (in shares)						7,689
Repurchase of unvested early-exercised stock options	0					$ 0
Repurchase of unvested early-exercised stock options (in shares)						(1)
Reclassification of early-exercised stock options from liability, net	1						1
Stock-based compensation	17						17
Issuance and repayment of employee loans collateralized by outstanding common stock	(1)									(1)
Issuance of common stock as consideration for investment and acquisition	52					$ 0	52
Issuance of common stock as consideration for investment and acquisition (in shares)						1,528
Foreign currency translation adjustment	(7)								(7)
Net income (loss)	3,748									3,748
Stockholders' equity, ending balance at Mar. 31, 2018	(4,726)					$ 0	406		(10)	(5,122)
Shares, outstanding at Mar. 31, 2018						450,934
Mezzanine Equity, Amount at Dec. 31, 2017			0	$ 12,210
Mezzanine Equity, Shares at Dec. 31, 2017				863,305
Mezzanine Equity, Amount at Jun. 30, 2018			0	$ 13,673
Mezzanine Equity, Shares at Jun. 30, 2018				893,301
Stockholders' equity, beginning balance at Dec. 31, 2017	(8,557)					$ 0	320		(3)	(8,874)
Shares, outstanding at Dec. 31, 2017						443,394
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Unrealized gain (loss) on available-for-sale securities	39
Foreign currency translation adjustment	(65)
Net income (loss)	2,870
Stockholders' equity, ending balance at Jun. 30, 2018	(5,508)					$ 0	514		(29)	(5,993)
Shares, outstanding at Jun. 30, 2018						453,252
Mezzanine Equity, Amount at Mar. 31, 2018			0	$ 13,710
Mezzanine Equity, Shares at Mar. 31, 2018				894,060
Mezzanine Equity, Amount at Jun. 30, 2018			0	$ 13,673
Mezzanine Equity, Shares at Jun. 30, 2018				893,301
Stockholders' equity, beginning balance at Mar. 31, 2018	(4,726)					$ 0	406		(10)	(5,122)
Shares, outstanding at Mar. 31, 2018						450,934
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase of outstanding shares	7	$ 4		$ 0	$ (37)	$ 0		$ 4		7
Repurchase of outstanding stock (in shares)				(5)	(754)	(287)
Exercise of stock options	0					$ 0
Exercise of stock options (in shares)						129
Repurchase of unvested early-exercised stock options	0					$ 0
Repurchase of unvested early-exercised stock options (in shares)						(129)
Reclassification of early-exercised stock options from liability, net	1						1
Stock-based compensation	11						11
Issuance and repayment of employee loans collateralized by outstanding common stock	(1)						(1)
Unrealized gain (loss) on available-for-sale securities	39								39
Issuance of common stock as consideration for investment and acquisition	93					$ 0	93
Issuance of common stock as consideration for investment and acquisition (in shares)						2,605
Foreign currency translation adjustment	(58)								(58)
Net income (loss)	(878)									(878)
Stockholders' equity, ending balance at Jun. 30, 2018	$ (5,508)					$ 0	514		(29)	(5,993)
Shares, outstanding at Jun. 30, 2018						453,252
Mezzanine Equity, Amount at Dec. 31, 2018			0	$ 14,177
Mezzanine Equity, Shares at Dec. 31, 2018	903,607			903,607
Increase (Decrease) in Temporary Equity [Roll Forward]
Mezzanine equity, net loss			(4)
Mezzanine Equity, Amount at Mar. 31, 2019			(4)	$ 14,224
Mezzanine Equity, Shares at Mar. 31, 2019				904,530
Stockholders' equity, beginning balance at Dec. 31, 2018	$ (7,385)					$ 0	668		(188)	(7,865)
Shares, outstanding at Dec. 31, 2018	457,189					457,189
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of common stock warrants				$ 45
Exercise of common stock warrants (in shares)				923
Lapsing of repurchase option related to Series E redeemable convertible preferred stock issued to a non-employee service provider				$ 2
Lapsing of repurchase option related to Series E redeemable convertible preferred stock issued to a non-employee service provider (in shares)				0
Repurchase of outstanding shares	$ 0					$ 0
Repurchase of outstanding stock (in shares)						(1)
Exercise of stock options	4					$ 0	4
Exercise of stock options (in shares)						677
Repurchase of unvested early-exercised stock options	0					$ 0
Repurchase of unvested early-exercised stock options (in shares)						(32)
Stock-based compensation	10						10
Unrealized gain (loss) on available-for-sale securities	(4)								(4)
Foreign currency translation adjustment	(54)								(54)
Net income (loss)	(1,012)									(1,012)
Stockholders' equity, ending balance at Mar. 31, 2019	$ (8,432)					$ 0	682		(246)	(8,868)
Shares, outstanding at Mar. 31, 2019						457,833
Mezzanine Equity, Amount at Dec. 31, 2018			0	$ 14,177
Mezzanine Equity, Shares at Dec. 31, 2018	903,607			903,607
Mezzanine Equity, Amount at Jun. 30, 2019			(14)	$ 0
Mezzanine Equity, Shares at Jun. 30, 2019	0			0
Stockholders' equity, beginning balance at Dec. 31, 2018	$ (7,385)					$ 0	668		(188)	(7,865)
Shares, outstanding at Dec. 31, 2018	457,189					457,189
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Unrealized gain (loss) on available-for-sale securities	$ 4
Foreign currency translation adjustment	17
Net income (loss)	(6,248)
Stockholders' equity, ending balance at Jun. 30, 2019	$ 15,922					$ 0	30,193		(167)	(14,104)
Shares, outstanding at Jun. 30, 2019	1,697,614					1,697,614
Mezzanine Equity, Amount at Mar. 31, 2019			(4)	$ 14,224
Mezzanine Equity, Shares at Mar. 31, 2019				904,530
Increase (Decrease) in Temporary Equity [Roll Forward]
Mezzanine equity, net loss			(10)
Mezzanine Equity, Amount at Jun. 30, 2019			$ (14)	$ 0
Mezzanine Equity, Shares at Jun. 30, 2019	0			0
Stockholders' equity, beginning balance at Mar. 31, 2019	$ (8,432)					$ 0	682		(246)	(8,868)
Shares, outstanding at Mar. 31, 2019						457,833
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Lapsing of repurchase option related to Series E redeemable convertible preferred stock issued to a non-employee service provider	3						3
Conversion of warrant to common stock in connection with initial public offering (in shares)						150
Conversion of warrant to common stock in connection with initial public offering	6					$ 0	6
Conversion of convertible notes to common stock in connection with initial public offering	4,229					0	4,229
Exercise of stock options	1					$ 0	1
Exercise of stock options (in shares)						501
Stock-based compensation	3,943						3,943
Unrealized gain (loss) on available-for-sale securities	8								8
Foreign currency translation adjustment	71								71
Issuance of common stock in connection with initial public offering, net of offering costs	7,973					$ 0	7,973
Issuance of common stock in connection with initial public offering, net of offering cost (in shares)						180,000
Conversion of redeemable convertible preferred stock to common stock in connection with initial public offering	14,224			$ (14,224)		$ 0	14,224
Conversion of redeemable convertible preferred stock to common stock in connection with initial public offering (in shares)				(904,530)		904,530
Issuance of common stock related to private placement	500					$ 0	500
Issuance of common stock related to private placement (in shares)						11,111
Issuance of common stock for settlement of RSUs	0					$ 0
Issuance of common stock for settlement of restricted stock units (RSUs) (in shares)						80,015
Shares withheld related to net share settlement	(1,368)					$ 0	(1,368)
Shares withheld related to net share settlement (in shares)						(30,504)
Net income (loss)	(5,236)									(5,236)
Stockholders' equity, ending balance at Jun. 30, 2019	$ 15,922					$ 0	$ 30,193		$ (167)	$ (14,104)
Shares, outstanding at Jun. 30, 2019	1,697,614					1,697,614

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities
Net income (loss) including redeemable non-controlling interest	$ (6,262)	$ 2,870
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation and amortization	269	186
Bad debt expense	67	22
Stock-based compensation	3,952	81
Gain on extinguishment of convertible notes and settlement of derivative	(444)	0
Gain on business divestitures	0	(3,201)
Deferred income tax	(31)	470
Revaluation of derivative liabilities	(58)	402
Accretion of discount on long-term debt	78	149
Payment-in-kind interest	10	35
Loss on disposal of property and equipment	13	37
Impairment on long-lived assets held for sale	0	79
Loss from equity method investment	16	17
Gain on debt and equity securities, net	(14)	(1,984)
Non-cash deferred revenue	(26)	0
Gain on forfeiture of unvested warrants and related share repurchases	0	(152)
Unrealized foreign currency transactions	(5)	48
Other	(1)	6
Change in operating assets and liabilities, net of impact of business acquisitions and disposals:
Accounts receivable	(436)	(21)
Prepaid expenses and other assets	(178)	(312)
Accounts payable	9	(52)
Accrued insurance reserve	257	516
Accrued expenses and other liabilities	1,140	354
Net cash used in operating activities	(1,644)	(450)
Cash flows from investing activities
Proceeds from insurance reimbursement, sale and disposal of property and equipment	41	230
Purchase of property and equipment	(277)	(209)
Purchase of equity method investments	0	(423)
Proceeds from business disposal, net of cash divested	293	0
Acquisition of businesses, net of cash acquired	(7)	(64)
Net cash provided by (used in) investing activities	50	(466)
Cash flows from financing activities
Proceeds from issuance of common stock upon initial public offering, net of offering costs	7,977	0
Taxes paid related to net share settlement of equity awards	(1,368)	0
Proceeds from issuance of common stock related to private placement	500	0
Proceeds from exercise of stock options, net of repurchases	5	15
Repurchase of outstanding shares	0	(9)
Issuance of term loan and senior notes, net of issuance costs	0	1,478
Principal repayment on term loan	(13)	(6)
Principal repayment on revolving lines of credit	0	(197)
Principal payments on capital and finance leases		(34)
Principal payments on capital and finance leases	(72)
Proceeds from issuance of redeemable convertible preferred stock, net of issuance costs	0	1,250
Dissolution of joint venture and subsequent proceeds	0	38
Other	0	(59)
Net cash provided by financing activities	7,029	2,476
Effect of exchange rate changes on cash and cash equivalents, and restricted cash and cash equivalents	12	(102)
Net increase in cash and cash equivalents, and restricted cash and cash equivalents	5,447	1,458
Cash and cash equivalents, and restricted cash and cash equivalents
Reclassification from (to) assets held for sale during the period	34	(6)
End of period, excluding cash classified within assets held for sale	13,690	7,280
Reconciliation of cash and cash equivalents, and restricted cash and cash equivalents to the condensed consolidated balance sheets
Cash and cash equivalents	11,744	5,647
Restricted cash and cash equivalents-current	137	118
Restricted cash and cash equivalents-non-current	1,809	1,515
Total cash and cash equivalents, and restricted cash and cash equivalents	13,690	7,280
Cash paid for:
Interest, net of amount capitalized	166	43
Income taxes, net of refunds	80	161
Non-cash investing and financing activities:
Conversion of redeemable convertible preferred stock to common stock upon initial public offering	14,224	0
Conversion of convertible notes to common stock upon initial public offering	4,229	0
Changes in purchases of property, equipment and software recorded in accounts payable and accrued liabilities	5	(12)
Financed construction projects	0	86
Capital and finance lease obligations	150	60
Settlement of litigation through issuance of redeemable convertible preferred stock	0	250
Common stock issued in connection with acquisitions	0	93
Ownership interest in MLU B.V. received in connection with the disposition of Uber Russia/CIS operations	0	1,410
Grab debt security received in exchange for the sale of Southeast Asia operations	$ 0	$ 2,275

Basis of Presentation and Summa

Basis of Presentation and Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	Note 1 - Basis of Presentation and Summary of Significant Accounting Policies Description of Business Uber Technologies, Inc. (“Uber” or “the Company”) was incorporated in Delaware in July 2010, and is headquartered in San Francisco, California. The Company is a technology company that is powering movement in countries around the world, principally in the United States (U.S.) and Canada, Latin America, Europe, the Middle East, and Asia (excluding China and Southeast Asia). The Company’s principal activities are to develop and support proprietary technology applications (“ platform(s) ”) that enable independent providers of ridesharing services (“ Driver Partner(s) ”), Eats meal preparation services (“ Restaurant Partner(s) ”) and Eats meal delivery services (“ Delivery Partner(s) ”), collectively the Company’s “ Partners ,” to transact with “Rider(s)” (for ridesharing services) and “Eater(s)” (for meal preparation and delivery services), collectively defined as “end-user” or “end-users.” Driver Partners provide ridesharing services to Riders through a range of offerings based on vehicle type and/or the number of Riders . Restaurant Partners and Delivery Partners provide meal preparation and delivery services, respectively, to Eaters. In addition, the Company also provides freight transportation services to shippers within the freight industry and leases vehicles to third-parties that may use the vehicles to provide ridesharing or Eats services through the Platforms . Refer to Note 2 - Revenue for further information. The Company has organized its operations into two operating and reportable segments: Core Platform and Other Bets. Core Platform primarily includes the ridesharing and Uber Eats products; while Other Bets primarily includes the Company’s Freight and New Mobility products. In June 2019, the Company announced a number of leadership and organizational changes. The Company is currently evaluating the impact to its operating and reportable segments based on how the businesses will be managed subsequent to the changes. These organizational changes will be effective in the third quarter of 2019. Refer to Note 13 - Segment Information and Geographic Information for further information. Initial Public Offering On May 14, 2019 , the Company closed its initial public offering (“IPO”), in which it issued and sold 180 million shares of its common stock. The price was $45.00 per share. The Company received net proceeds of approximately $8.0 billion from the IPO after deducting underwriting discounts and commissions of $106 million and offering expenses. Upon closing of the IPO: i) all shares of the Company’s outstanding redeemable convertible preferred stock automatically converted into 905 million shares of common stock; ii) holders of the 2021 Convertible Notes and the 2022 Convertible Notes elected to convert all outstanding notes into 94 million shares of common stock; and, iii) an outstanding warrant which became exercisable upon the closing of the IPO was exercised to purchase 0.2 million shares of common stock. In addition, the Company recognized a net gain of $327 million in other income (expense), net in the condensed consolidated statement of operations upon conversion of the 2021 Convertible Notes and the 2022 Convertible Notes during the second quarter of 2019, which consisted of $444 million gain on extinguishment of debt and settlement of derivatives, partially offset by $117 million loss from the change in fair value of embedded derivatives prior to settlement. The extinguishment of debt resulted in the derecognition of the carrying value of the debt balance and settlement of embedded derivatives. Upon the Company’s IPO, the Company recognized $3.6 billion of stock-based compensation expense. Upon the IPO, shares were issued to satisfy the vesting of restricted stock units (“RSUs”) with a performance condition. To meet the related tax withholding requirements, the Company withheld 29 million of the 76 million shares of common stock issued. Based on the IPO public offering price of $45.00 per share, the tax withholding obligation was $1.3 billion . As a result of stock-based compensation expense for vested and unvested RSUs upon the IPO, the Company recorded an additional deferred tax asset of approximately $1.1 billion that is offset by a full valuation allowance. Due to the valuation allowance, no income tax benefit was recognized in income during the three months ended June 30, 2019 . ATG Investment In April 2019, the Company entered into a preferred unit purchase agreement with affiliates of SoftBank Vision Fund (“SoftBank”), Toyota Motor Corporation (“Toyota”), and DENSO Corporation (“DENSO” and together with SoftBank and Toyota, the “ATG Investors”). Pursuant to the preferred unit purchase agreement, the ATG Investors agreed to invest an aggregate of $1.0 billion in a newly formed corporate parent entity for the Company’s Advanced Technologies Group (“ATG”) in exchange for preferred units of ATG collectively representing approximately a 14% ownership interest in ATG on a fully diluted basis. The Company agreed to contribute certain of its subsidiaries and all assets and liabilities primarily related to its autonomous vehicle technologies, (excluding liabilities arising from certain indemnification obligations related to the Levandowski arbitration and any remediation costs associated with certain obligations that may arise as a result of the Waymo settlement), in exchange for common units of ATG representing approximately an 86% ownership interest in ATG on a fully diluted basis. The preferred units held by each of the ATG Investors will receive an annual dividend of 4.5% , which will be payable in cash or accrete to the holder of preferred units, at ATG’s election. The Company and Softbank also agreed to put and call obligations with respect to SoftBank’s preferred units (priced at the greater of (i) cost plus any accrued and unpaid dividends and (ii) the then fair market value of the preferred units) if ATG has not gone public or been sold as of the seventh anniversary of the closing of the transaction. If the Company is a publicly traded company as of the seventh anniversary of the closing of transaction, the Company has the option to satisfy all, or a portion of, its put and call obligations with shares of its common stock and any remainder will be satisfied in cash. If the Committee on Foreign Investment in the United States blocks or unwinds the ATG Collaboration Agreement (described below) or requires mitigation measures that materially and adversely affect the strategic benefits of the ATG Collaboration Agreement, the ATG Investors will each have the right to require ATG to redeem some or all of its preferred units at a price equal to its respective initial investment amount, which redemption(s) may be satisfied in cash or in exchange for shares of the Company’s common stock if a cash redemption would have a material and adverse impact on ATG. In addition to the unit purchase agreement, the Company has entered into a joint collaboration agreement with Toyota, DENSO, and ATG with respect to next-generation self-driving hardware and the development of self-driving vehicles leveraging technology from each of the parties (the “ATG Collaboration Agreement”), which became effective as of the closing of the transaction. Pursuant to the ATG Collaboration Agreement, ATG and Toyota will agree on development plans, and thereafter Toyota will contribute to ATG up to an aggregate of $300 million in cash over six semi-annual installments to fund the ongoing activities contemplated under the ATG Collaboration Agreement. On July 2, 2019, the investment by the ATG Investors in ATG was consummated. Softbank and Toyota are existing investors in the Company. Pending Acquisition of Careem On March 26, 2019, the Company entered into an asset purchase agreement (the “Agreement”) with Careem Inc. (“Careem”). Pursuant to the Agreement, upon the terms and subject to the conditions thereof, Augusta Acquisition B.V., an indirect wholly-owned subsidiary of the Company, will acquire substantially all of the assets and assume substantially all of the liabilities of Careem for consideration of approximately $3.1 billion , subject to certain adjustments. The total consideration will consist of up to approximately $1.7 billion in non-interest-bearing unsecured convertible notes and approximately $1.4 billion in cash. Careem is a Dubai-based company that provides ridesharing, meal delivery, and payment services across the Middle East, North Africa, and Pakistan. The acquisition is subject to applicable competition authority approvals in certain of the countries in which Careem operates. The closing is expected to occur in January 2020. Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial reporting. The condensed consolidated balance sheet as of December 31, 2018 included herein was derived from the audited consolidated financial statements as of that date but does not include all of the information and notes required by GAAP for complete financial statements. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. As such, the information included in this Quarterly Report on Form 10-Q should be read in conjunction with the audited consolidated financial statements and the related notes thereto as of and for the year ended December 31, 2018 , included in the Company’s final prospectus filed with the SEC pursuant to Rule 424(b) under the Securities Act of 1933, as amended (“the Securities Act”), on May 13, 2019 (“the Prospectus”). In the opinion of management, these financial statements include all adjustments, which are of a normal recurring nature, necessary for a fair statement of the financial position, results of operations, cash flows and the change in equity for the periods presented. There have been no changes to the Company’s significant accounting policies described in the Prospectus that have had a material impact on the Company’s condensed consolidated financial statements and related notes, except for the adoption of the new accounting standard related to lease accounting. Basis of Consolidation The condensed consolidated financial statements of the Company include the accounts of the Company and entities consolidated under the variable interest and voting models. All intercompany balances and transactions have been eliminated. Refer to Note 15 - Variable Interest Entities ("VIEs") for further information. Use of Estimates The preparation of the Company’s unaudited condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions, which affect the reported amounts in the financial statements and accompanying notes. Estimates are based on historical experience, where applicable, and other assumptions which management believes are reasonable under the circumstances. On an ongoing basis, the Company evaluates its estimates, including those related to the incremental borrowing rate (“IBR”) applied in lease accounting, accounts receivable allowances, fair values of investments and other financial instruments, useful lives of amortizable long-lived assets and intangible assets, stock-based compensation, income and non-income taxes, insurance reserves, and contingent liabilities. These estimates are inherently subject to judgment and actual results could differ from those estimates. Significant Accounting Policies - Leases The Company accounts for leases in accordance with ASC 842, Leases (“ASC 842”), which requires lessees to recognize leases on-balance sheet and disclose key information about leasing arrangements. The Company adopted ASC 842 along with all subsequent ASU clarifications and improvements that are applicable to the Company, on January 1, 2019, using the modified retrospective transition method and used the effective date as the date of initial application. Consequently, financial information is not updated and the disclosures required under ASC 842 are not provided for dates and periods before January 1, 2019. ASC 842 provides a number of optional practical expedients in transition. The Company elected the “package of practical expedients,” which permits the Company not to reassess under ASC 842 its prior conclusions about lease identification, lease classification and initial direct costs. The Company also made a policy election not to separate non-lease components from lease components, therefore, it will account for lease component and the non-lease components as a single lease component. The Company determines if a contract contains a lease based on whether it has the right to obtain substantially all of the economic benefits from the use of an identified asset and whether it has the right to direct the use of an identified asset in exchange for consideration, which relates to an asset which the Company does not own. Right of use (“ROU”) assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. ROU assets are recognized as the lease liability, adjusted for lease incentives received. Lease liabilities are recognized at the present value of the future lease payments at the lease commencement date. The interest rate used to determine the present value of the future lease payments is the Company’s IBR, because the interest rate implicit in most of the Company’s leases is not readily determinable. The IBR is a hypothetical rate based on the Company’s understanding of what its credit rating would be to borrow and resulting interest the Company would pay to borrow an amount equal to the lease payments in a similar economic environment over the lease term on a collateralized basis. Lease payments may be fixed or variable, however, only fixed payments or in-substance fixed payments are included in the Company’s lease liability calculation. Variable lease payments are recognized in operating expenses in the period in which the obligation for those payments are incurred. The lease term of operating and finance leases vary from less than a year to 76 years . The Company has leases that include one or more options to extend the lease term for up to 14 years as well as options to terminate the lease within one year. The Company’s lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise such options. Operating leases are included in operating lease right to use assets, operating lease liabilities, current and operating lease liabilities, non-current on the Company’s condensed consolidated balance sheets . Finance leases are included in property and equipment, net, accrued and other current liabilities, and other long-term liabilities on the Company’s condensed consolidated balance sheets . As of June 30, 2019 , less than 15% of the Company’s ROU assets were generated from leased assets outside of the U.S. Cash and Cash Equivalents Cash and cash equivalents as of June 30, 2019 consisted of cash held in checking and savings accounts as well as investments in money market funds and U.S. government securities. The Company considers all highly-liquid investments purchased with an original or remaining maturity of three months or less at the date of purchase to be cash equivalents. Cash includes amounts collected on behalf of, but not yet remitted to Partners, which are included in accrued and other current liabilities on the consolidated balance sheets. Recently Adopted Accounting Pronouncements In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842),” which requires lessees to recognize leases on-balance sheet and disclose key information about leasing arrangements. Upon adoption of the new leasing standard on January 1, 2019, the Company recognized ROU assets of $888 million and lease liabilities of $963 million . The Company reassessed the build-to-suit leases that no longer meet the control-based build-to-suit model and derecognized $392 million in build-to-suit assets, $350 million corresponding financing obligation, and recorded $9 million of deferred tax liability. The initial cash contribution to the Mission Bay 3 & 4 joint venture that was previously reported as a defeasance of a build-to-suit financing obligation of $60 million was derecognized by reclassifying it as an increase to the Mission Bay 3 & 4 equity method investment. The $9 million difference between the total derecognized assets and total derecognized liabilities was recorded in the opening balance of accumulated deficit, net of tax, as of January 1, 2019. In July 2017, the FASB issued ASU 2017-11, “Earnings Per Share (Topic 260); Distinguishing Liabilities from Equity (Topic 480); Derivatives and Hedging (Topic 815): (Part I) Accounting for Certain Financial Instruments with Down Round Features, (Part II) Replacement of the Indefinite Deferral for Mandatorily Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatorily Redeemable Noncontrolling Interests with a Scope Exception” to simplify the accounting for certain instruments with down round features. The amendments require companies to disregard the down round feature when assessing whether the instrument is indexed to its own stock, for purposes of determining liability or equity classification. Further, companies that provide earnings per share (“EPS”) data will adjust the basic EPS calculation for the effect of the feature when triggered and will also recognize the effect of the trigger within equity. The Company adopted this new standard as of January 1, 2019 and applied the changes retrospectively. The adoption of the new standard did not have a material impact on the Company’s condensed consolidated financial statements. In June 2018, the FASB issued ASU 2018-07, “Improvements to Non-Employee Share-Based Payment Accounting,” which expands the scope of Topic 718, to include share-based payments issued to non-employees for goods or services. The new standard supersedes Subtopic 505-50. The Company adopted the new standard effective January 1, 2019 on a modified retrospective basis. The new standard did not have a material impact on the Company’s condensed consolidated financial statements. Recently Issued Accounting Pronouncements Not Yet Adopted In June 2016, the FASB issued ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” to require the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. The standard also amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. The standard is effective for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. The Company is currently evaluating the impact of this accounting standard update on its consolidated financial statements. In August 2018, the FASB issued ASU 2018-13, “Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement,” which modifies the disclosure requirements in ASC 820, “Fair Value Measurement” (“ASC 820”). The new standard is effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted. An entity is permitted to early adopt any removed or modified disclosures upon issuance of this ASU and delay adoption of the additional disclosures until their effective date. The Company is currently evaluating the impact of this accounting standard update on its consolidated financial statements. In August 2018, the FASB issued ASU 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,” which aligns the requirements for capitalizing implementation costs incurred in a cloud computing arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use-software. The standard is effective for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted. The Company is currently evaluating the impact of this accounting standard update on its consolidated financial statements. In October 2018, the FASB issued ASU 2018-17, “Consolidation (Topic 810): Targeted Improvements to Related Party Guidance for Variable Interest Entities,” which amends the guidance for determining whether a decision-making fee is a variable interest and requires organizations to consider indirect interests held through related parties under common control on a proportional basis rather than as the equivalent of a direct interest in its entirety. The standard is effective for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted. The Company is currently evaluating the impact of this accounting standard update on its consolidated financial statements.

Revenue

Revenue	6 Months Ended
	Jun. 30, 2019
Revenue from Contract with Customer [Abstract]
Revenue	Note 2 - Revenue The following tables present the Company’s revenues disaggregated by offering and Core Platform revenue by geographical region. Core Platform revenue by geographical region is based on where the trip was completed or meal delivered. This level of disaggregation takes into consideration how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors. Revenue is presented in the following tables for the three and six months ended June 30, 2018 and 2019 , respectively ( in millions ): Three Months Ended June 30, Six Months Ended June 30, 2018 2019 2018 2019 Ridesharing revenue $ 2,291 $ 2,348 $ 4,471 $ 4,724 Uber Eats revenue 346 595 629 1,131 Vehicle Solutions revenue (1) 34 3 89 13 Other revenue 26 25 52 57 Total Core Platform revenue 2,697 2,971 5,241 5,925 Total Other Bets revenue 71 195 111 340 Total revenue $ 2,768 $ 3,166 $ 5,352 $ 6,265 Three Months Ended June 30, Six Months Ended June 30, 2018 2019 2018 2019 United States and Canada $ 1,493 $ 1,776 $ 2,880 $ 3,526 Latin America ("LATAM") 547 417 1,065 867 Europe, Middle East and Africa ("EMEA") 413 502 801 989 Asia Pacific ("APAC") 244 276 495 543 Total Core Platform revenue $ 2,697 $ 2,971 $ 5,241 $ 5,925 (1) The Company accounts for Vehicle Solutions revenue as an operating lease as defined under ASC 840 for 2018 and ASC 842 in 2019. Revenue from Contracts with Customers Ridesharing Revenue The Company derives revenue primarily from fees paid by Driver Partners for the use of the Company’s platform(s) and related service to facilitate and complete ridesharing services. Uber Eats Revenue The Company derives revenue for Uber Eats from Restaurant Partners’ and Delivery Partners’ use of the Uber Eats platform and related service to facilitate and complete Eats transactions. Other Revenue Other revenue consists primarily of revenue from the Company’s Uber for Business (“U4B”), financial partnerships products and other immaterial revenue streams. Other Bets Other Bets revenue consists primarily of revenue from Uber Freight and other immaterial revenue streams. Contract Balances The Company’s contract assets for performance obligations satisfied prior to payment or contract liabilities for consideration collected prior to satisfying the performance obligations are not material for the three months ended June 30, 2019 . Remaining Performance Obligations As a result of a single contract entered into with a customer during 2018, the Company had $113 million of consideration allocated to an unfulfilled performance obligation as of June 30, 2019 . Revenue recognized during three and six months ended June 30, 2019 related to the contract was not material . The Company’s remaining performance obligation is expected to be recognized as follows ( in millions ) : Less Than or Greater Than Total As of June 30, 2019 $ 52 $ 61 $ 113

Fair Value Measurement

Fair Value Measurement	6 Months Ended
	Jun. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurement	Note 3 - Fair Value Measurement The Company’s investments on the condensed consolidated balance sheets consisted of the following as of December 31, 2018 and June 30, 2019 (in millions) : As of December 31, 2018 June 30, 2019 Non-marketable equity securities: Didi $ 7,953 $ 7,953 Other 32 94 Debt securities: Grab (1) 2,328 2,334 Other (2) 42 34 Investments $ 10,355 $ 10,415 (1) Recorded at fair value with changes in fair value recorded in other comprehensive income (loss), net of tax. (2) Recorded at fair value with changes in fair value recorded in earnings due to the election of the fair value option of accounting for financial instruments. The Company defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. In accordance with ASC 820, the Company uses the fair value hierarchy, which prioritizes the inputs used to measure fair value. The hierarchy, as defined below, gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. The three levels of the fair value hierarchy are set forth below: Level 1 Observable inputs such as quoted prices in active markets for identical assets or liabilities. Level 2 Observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities in active markets, quoted prices in markets that are not active or inputs other than the quoted prices that are observable either directly or indirectly for the full term of the assets or liabilities. Level 3 Unobservable inputs in which there is little or no market data and that are significant to the fair value of the assets or liabilities. The Company measures its cash equivalents, certain investments, warrants, and derivative financial instruments at fair value. Level 1 instrument valuations are based on quoted market prices of the identical underlying security. Level 2 instrument valuations are obtained from readily available pricing sources for comparable instruments, identical instruments in less active markets, or models using market observable inputs. Level 3 instrument valuations are valued based on unobservable inputs and other estimation techniques due to the absence of quoted market prices, inherent lack of liquidity and the long-term nature of such financial instruments. Assets and Liabilities Measured at Fair Value on a Recurring Basis The following table presents the Company’s financial assets and liabilities measured at fair value on a recurring basis based on the three-tier fair value hierarchy (in millions) : As of December 31, 2018 As of June 30, 2019 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Financial Assets Cash and cash equivalents: Money market funds $ 268 $ — $ — $ 268 $ 6,000 $ — $ — $ 6,000 U.S. government securities — — — — — 1,049 — 1,049 Restricted cash and cash equivalents: Money market funds 1,237 — — 1,237 1,497 — — 1,497 Investments: Debt securities — — 2,370 2,370 — — 2,368 2,368 Total financial assets $ 1,505 $ — $ 2,370 $ 3,875 $ 7,497 $ 1,049 $ 2,368 $ 10,914 Financial Liabilities Accrued and other current liabilities: Other $ — $ — $ 9 $ 9 $ — $ — $ 3 $ 3 Other long-term liabilities: Warrants — — 52 52 — — — — Embedded derivatives — — 2,018 2,018 — — — — Total financial liabilities $ — $ — $ 2,079 $ 2,079 $ — $ — $ 3 $ 3 During the six months ended June 30, 2019 , the Company did not make any transfers between the levels of the fair value hierarchy. The following table summarizes the amortized cost, unrealized gains and losses, and fair value of the Company’s financial assets measured at fair value on a recurring basis as of December 31, 2018 and June 30, 2019 (in millions) : As of December 31, 2018 As of June 30, 2019 Amortized Cost Unrealized Gains Unrealized Losses Fair Value Amortized Cost Unrealized Gains Unrealized Losses Fair Value Cash and cash equivalents: U.S. government securities $ — $ — $ — $ — $ 1,049 $ — $ — $ 1,049 Investments: Debt securities 2,305 65 — 2,370 2,307 61 — 2,368 Total $ 2,305 $ 65 $ — $ 2,370 $ 3,356 $ 61 $ — $ 3,417 The Company’s Level 3 debt securities as of December 31, 2018 and June 30, 2019 primarily consist of redeemable preferred stock investments in privately held companies without readily determinable fair values. Depending on the investee’s financing activity in a reporting period, management’s estimate of fair value may be primarily derived from the investee’s financing transactions, including the issuance of preferred stock to new investors. The price in these transactions generally provides the best indication of the enterprise value of the investee. Additionally, based on the timing, volume, and other characteristics of the transaction, the Company may supplement this information by using other valuation techniques, including the guideline public company approach. The guideline public company approach relies on publicly available market data of comparable companies and uses comparative valuation multiples of the investee’s revenue (actual and forecasted), and therefore, unobservable data primarily consists of short-term revenue projections. Once the fair value of the investee is estimated, an option pricing model (“OPM”) is employed to allocate value to various classes of securities of the investee, including the class owned by the Company. The model involves making key assumptions around the investees’ expected time to liquidity and volatility. An increase or decrease in any of the unobservable inputs in isolation, such as the security price in a significant financing transaction of the investee, could result in a material increase or decrease in the Company’s estimate of fair value. Other key unobservable inputs, including short-term revenue projections, time to liquidity, and volatility are less sensitive to the valuation in the respective reporting periods, as a result of the primary weighting on the investee’s financing transactions during 2018 and 2019. In the future, depending on the weight of evidence and valuation approaches used, these or other inputs may have a more significant impact on the Company’s estimate of fair value. The following table summarizes information about the significant unobservable inputs used in the fair value measurement for the Company’s investment in Grab as of December 31, 2018 and June 30, 2019 : Fair value method Relative weighting Key unobservable input Financing transactions 100% Transaction price per share $6.16 The Company determines realized gains or losses on the sale of equity and debt securities on a specific identification method. The Company did not recognize any other-than-temporary impairment losses during three and six months ended June 30, 2018 and 2019 . The following table summarizes the amortized cost and fair value of the Company’s debt securities with a stated contractual maturity or redemption date as of December 31, 2018 and June 30, 2019 (in millions) : As of December 31, 2018 As of June 30, 2019 Amortized Cost Fair Value Amortized Cost Fair Value Within one year $ — $ — $ 1,049 $ 1,049 One year through five years 2,275 2,328 2,277 2,334 Total $ 2,275 $ 2,328 $ 3,326 $ 3,383 The following table presents a reconciliation of the Company’s financial assets measured and recorded at fair value on a recurring basis as of June 30, 2019 , using significant unobservable inputs (Level 3) (in millions) : Debt Securities Balance as of December 31, 2018 $ 2,370 Total net gains (losses) Included in earnings (8 ) Included in other comprehensive income (loss) 4 Purchases 2 Sales — Settlements — Balance as of June 30, 2019 $ 2,368 The following table presents a reconciliation of the Company’s financial liabilities measured at fair value as of June 30, 2019 using significant unobservable inputs (Level 3), and the change in fair value recorded in other income (expense), net in the condensed consolidated statements of operations (in millions) : Warrants Convertible Debt Embedded Derivative Balance as of December 31, 2018 $ 52 $ 2,018 Vesting of share warrants 1 — Exercise of vested share warrants (53 ) — Change in fair value — (58 ) Settlement of derivative liability — (1,960 ) Balance as of June 30, 2019 $ — $ — Convertible Debt Embedded Derivative Convertible debt embedded derivatives originated from the issuance of the 2021 convertible notes and 2022 convertible notes (collectively the “ Convertible Notes ”) during 2015. Refer to Note 7 - Long-Term Debt and Revolving Credit Arrangements for further information. The fair value of the embedded derivatives was computed as the difference between the estimated value of the Convertible Notes with and without the Qualified Initial Public Offering (“ QIPO ”) Conversion Option (“ QIPO Conversion Option ”). The fair value of the Convertible Notes with and without the QIPO Conversion Option was estimated utilizing a discounted cash flow model to discount the expected payoffs at various potential QIPO dates to the valuation date. The key inputs to the valuation model included the probability of a QIPO occurring at various times, which was estimated to be 100% cumulatively by 2019 and a discount yield that was derived by the credit spread based on the average of the option-adjusted spreads of comparable instruments plus risk-free rates. Fair value measurements are highly sensitive to changes in these inputs; significant changes in these inputs would result in a significantly higher or lower fair value. No value was attributed to other embedded features as they are triggered by events with a remote probability of occurrence. Upon closing of the IPO, holders of the 2021 Convertible Notes and the 2022 Convertible Notes elected to convert all outstanding notes into 94 million shares of common stock. Refer to Note 1 - Basis of Presentation and Summary of Significant Accounting Policies for further information. Warrant Liabilities In February 2016, the Company issued two warrants to an investor advisor to purchase up to 205,034 shares and 820,138 shares of the Company’s Series G redeemable convertible preferred stock at an exercise price of $0.01 per share in exchange for advisory services. The warrants were liability-classified due to the contingent redemption features in the underlying preferred stock and were consequently measured at their fair value of $45 million as of December 31, 2018 . The vested shares were exercised during the first quarter of 2019, and the Company reclassified the $45 million fair value of the vested shares to Series G redeemable convertible preferred stock. Upon closing of the IPO, the Series G redeemable convertible preferred stock were automatically converted to shares of common stock. Assets Measured at Fair Value on a Non-Recurring Basis The Company’s non-financial assets, such as goodwill, intangible assets and property and equipment are adjusted to fair value when an impairment charge is recognized. Such fair value measurements are based predominately on Level 3 inputs. Non-Marketable Equity Securities The Company’s non-marketable equity securities are investments in privately held companies without readily determinable fair values and primarily relate to its investment in Didi. On January 1, 2018, the Company adopted ASU 2016-01, in which the carrying value of its non-marketable equity securities are adjusted based on price changes from observable transactions of identical or similar securities of the same issuer or for impairment (referred to as the measurement alternative). Any changes in carrying value is recorded within other income (expense), net in the condensed consolidated statements of operations . Non-marketable equity securities are classified within Level 3 in the fair value hierarchy because the Company estimates the fair value of these securities based on valuation methods, including the common stock equivalent method, using the transaction price of similar securities issued by the investee adjusted for contractual rights and obligations of the securities it holds. The following is a summary of unrealized gains and losses from remeasurement (referred to as upward or downward adjustments) recorded in other income (expense), net in the condensed consolidated statements of operations , and included as adjustments to the carrying value of non-marketable equity securities held during the three and six months ended June 30, 2018 and 2019 based on the selling price of newly issued shares of similar preferred stock to new investors using the common stock equivalent valuation method and adjusted for any applicable differences in conversion rights (in millions) : Three Months Ended June 30, Six Months Ended June 30, 2018 2019 2018 2019 Upward adjustments $ — $ 4 $ 1,984 $ 22 Downward adjustments (including impairment) — — — — Total unrealized gain for non-marketable equity securities $ — $ 4 $ 1,984 $ 22 The Company did not record any realized gains or losses for the Company’s non-marketable equity securities as of June 30, 2019 . The following table summarizes the total carrying value of the Company’s non-marketable equity securities held as of December 31, 2018 and June 30, 2019 including cumulative unrealized upward and downward adjustments made to the initial cost basis of the securities (in millions) : As of December 31, 2018 June 30, 2019 Initial cost basis $ 6,001 $ 6,041 Upward adjustments 1,984 2,006 Downward adjustments (including impairment) — — Total carrying value at the end of the period $ 7,985 $ 8,047

Equity Method Investments

Equity Method Investments	6 Months Ended
	Jun. 30, 2019
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments	Note 4 - Equity Method Investments The carrying value of the Company’s equity method investments as of December 31, 2018 and June 30, 2019 is as follows (in millions) : As of December 31, 2018 June 30, 2019 MLU B.V. $ 1,234 $ 1,232 Mission Bay 3 & 4 (1) 78 138 Equity method investments $ 1,312 $ 1,370 (1) Refer to Note 15 - Variable Interest Entities ("VIEs") for further information on the Company’s interest in Mission Bay 3 & 4. MLU B.V. During the first quarter of 2018, the Company contributed the net assets of its Uber Russia/CIS operations into a newly formed private limited liability company (“MLU B.V.” or “Yandex.Taxi joint venture”), with Yandex and the Company holding ownership interests in MLU B.V. The Company contributed $345 million of cash, contracts in the region including Rider, Driver Partner, and Eater contracts, and certain employees in the region to MLU B.V. The Company concurrently issued approximately 2 million shares of Uber Technologies, Inc. Class A common stock, with a fair value of $52 million to MLU B.V.’s parent, Yandex. These shares are subject to a put/call feature resulting in Uber Technologies, Inc.’s contingent obligation to buy back these shares at $48 per share after twelve months from the closing date. Neither the put nor the call had been exercised as of June 30, 2019 . In exchange for consideration contributed, the Company received a seat on MLU B.V.’s board and a 38% equity ownership interest consisting of common stock in MLU B.V. Certain contingent equity issuances of MLU B.V. may dilute the Company’s equity ownership interest to approximately 35% . The investment was determined to be an equity method investment due to the Company’s ability to exercise significant influence over MLU B.V. The initial fair value of the Company’s equity method investment in MLU B.V. was estimated using discounted cash flows of MLU B.V. As a result of the loss of control over Uber Russia/CIS resulting from the transaction, the Company derecognized the assets/liabilities of Uber Russia/CIS and recorded a $954 million gain during the first quarter of 2018 recognized in other income (expense), net in the condensed consolidated statement of operations. Included in the initial carrying value of $1.4 billion , which represents the fair value on the transaction date, was a basis difference of $908 million related to the difference between the cost of the investment and the Company’s proportionate share of the net assets of MLU B.V. The carrying value of the equity method investments are primarily adjusted for the Company’s share in the losses of MLU B.V. and amortization of basis differences. The carrying value was also adjusted for currency translation adjustments representing fluctuations between the functional currency of the investee, the Ruble and the U.S. Dollar. As of June 30, 2019 , the basis differences between the carrying value of the Company’s investment and its share in the net assets of MLU B.V. amounted to $792 million , including the impact of foreign currency translation, and are comprised primarily of equity method goodwill. Equity method goodwill is not amortized. The Company amortizes the basis difference related to the intangible assets over the estimated useful lives of the assets that gave rise to the difference using the straight-line method. The weighted-average life of the intangible asset is approximately 5.3 years as of June 30, 2019 . The investment balance is reviewed for impairment whenever factors indicate that the carrying value of the equity method investment may not be recoverable.

Property and Equipment, Net

Property and Equipment, Net	6 Months Ended
	Jun. 30, 2019
Property, Plant and Equipment [Abstract]
Property and Equipment, Net	Note 5 - Property and Equipment, Net The components of property and equipment, net as of December 31, 2018 and June 30, 2019 were as follows (in millions) : As of December 31, 2018 June 30, 2019 Land $ 67 $ 67 Building and site improvements 93 40 Leasehold improvements 315 345 Computer equipment 858 893 Leased computer equipment 288 438 Leased vehicles 34 31 Internal-use software 51 73 Furniture and fixtures 39 39 Dockless e-bikes 10 58 Construction in progress 832 661 Total 2,587 2,645 Less: Accumulated depreciation and amortization (946 ) (1,198 ) Property and equipment, net $ 1,641 $ 1,447 Depreciation expense relating to property and equipment was $92 million and $174 million for the three and six months ended June 30, 2018 , respectively, and $115 million and $252 million for the three and six months ended June 30, 2019 , respectively. Amounts in construction in progress represent buildings, leasehold improvements, assets under construction, other assets not placed in service, and build-to-suit leases prior to the adoption of ASC 842 on January 1, 2019. Upon adoption of ASC 842, the Company derecognized build-to-suit assets from construction in progress. Refer to Note 1 - Basis of Presentation and Summary of Significant Accounting Policies for further information.

Leases

Leases	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Leases, Finance	Note 6 - Leases The components of lease expense were as follows (in millions) : Three Months Ended June 30, 2019 Six Months Ended June 30, 2019 Lease cost Finance lease cost: Amortization of assets $ 35 $ 71 Interest of lease liabilities 4 8 Operating lease cost 79 146 Short-term lease cost 10 18 Variable lease cost 29 54 Sublease income — (1 ) Total lease cost $ 157 $ 296 Supplemental cash flow information related to leases was as follows (in millions) : Six Months Ended June 30, 2019 Other information Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from financing leases $ 6 Operating cash flows from operating leases 107 Financing cash flows from financing leases 72 Right-of-use assets obtained in exchange for lease obligations: Operating lease liabilities $ 547 Finance lease liabilities 150 Supplemental balance sheet information related to leases was as follows (in millions, except lease term and discount rate): As of June 30, 2019 Operating Leases Operating lease right-of-use assets $ 1,337 Operating lease liability, current 180 Operating lease liabilities, non-current 1,274 Total operating lease liabilities $ 1,454 As of June 30, 2019 Finance Leases Property and equipment, at cost $ 438 Accumulated depreciation (168 ) Property and equipment, net $ 270 Other current liabilities $ 133 Other long-term liabilities 149 Total finance leases liabilities $ 282 As of June 30, 2019 Weighted-average remaining lease term Operating leases 17 years Finance leases 2 years Weighted-average discount rate Operating leases 7.2 % Finance leases 5.0 % Maturities of lease liabilities were as follows (in millions) : As of June 30, 2019 Operating Leases Finance Leases Remainder of 2019 $ 133 $ 85 2020 221 115 2021 255 86 2022 213 11 2023 180 — Thereafter 1,989 — Total undiscounted lease payments 2,991 297 Less: imputed interest (1,537 ) (15 ) Total lease liabilities $ 1,454 $ 282 As of June 30, 2019 , the Company had additional operating leases and finance leases, primarily for corporate offices and servers, that have not yet commenced of $254 million and $6 million , respectively. These operating and finance leases will commence between fiscal year 2019 and fiscal year 2021 with lease terms of 1 year to 11 years . Failed Sale-Leaseback In 2015, the Company entered into a JV agreement with a real estate developer (“JV Partner”) to develop parcels of land (“the Land”) in San Francisco on which to construct the Company’s new headquarters buildings (the “Buildings”). The Buildings are to consist of two adjacent towers totaling approximately 423,000 rentable square feet. In connection with the JV arrangement, the Company had acquired a 49% interest in the JV, the principal asset of which was the Land on which the Buildings are to be constructed. In November 2016, the Company and the JV Partner agreed to dissolve the JV and terminate the Company’s commitment to the lease of the Buildings (together “the real estate transaction”). Under the terms of the real estate transaction, the Company obtained the rights and title to the partially constructed building, will complete the development of the two office buildings and retain a 100% ownership of the buildings. In connection with the real estate transaction, the Company also executed two 75 -year land lease agreements (“Land Leases”). As of June 30, 2019 , commitments under the Land Leases total $169 million until February 2032. After 2032, the annual rent amount will adjust annually based on the prevailing consumer price index. For accounting purposes, the real estate transaction is in substance the sale-leaseback of the Company’s 49% indirect interest in the land. Due to the Company’s continuing involvement through a purchase option on the Land, the Company failed to qualify for sale-leaseback accounting. A failed sale-leaseback transaction is accounted for as a financing transaction whereby the cash and deferred sales proceeds received in the real estate transaction are recorded as a financing obligation. Accordingly, the Company’s previous ownership in the JV, which represented its ownership interest in the Land of $65 million , is included in property and equipment, net, and a corresponding financing obligation of $79 million is included in other long-term liabilities as of June 30, 2019 . Future land lease payments of $1.8 billion will be allocated 49% to the financing obligation under the failed sale-leaseback arrangement and 51% to the operating lease of land. Future minimum payments related to the financing obligations under failed sale-leaseback arrangement as of June 30, 2019 are summarized below (in millions) : Future Minimum Payments under Failed Sale-Leaseback Arrangements Fiscal Year Ending December 31, Remainder of 2019 $ 3 2020 6 2021 6 2022 6 2023 6 Thereafter 833 Total $ 860
Leases, Operating	Note 6 - Leases The components of lease expense were as follows (in millions) : Three Months Ended June 30, 2019 Six Months Ended June 30, 2019 Lease cost Finance lease cost: Amortization of assets $ 35 $ 71 Interest of lease liabilities 4 8 Operating lease cost 79 146 Short-term lease cost 10 18 Variable lease cost 29 54 Sublease income — (1 ) Total lease cost $ 157 $ 296 Supplemental cash flow information related to leases was as follows (in millions) : Six Months Ended June 30, 2019 Other information Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from financing leases $ 6 Operating cash flows from operating leases 107 Financing cash flows from financing leases 72 Right-of-use assets obtained in exchange for lease obligations: Operating lease liabilities $ 547 Finance lease liabilities 150 Supplemental balance sheet information related to leases was as follows (in millions, except lease term and discount rate): As of June 30, 2019 Operating Leases Operating lease right-of-use assets $ 1,337 Operating lease liability, current 180 Operating lease liabilities, non-current 1,274 Total operating lease liabilities $ 1,454 As of June 30, 2019 Finance Leases Property and equipment, at cost $ 438 Accumulated depreciation (168 ) Property and equipment, net $ 270 Other current liabilities $ 133 Other long-term liabilities 149 Total finance leases liabilities $ 282 As of June 30, 2019 Weighted-average remaining lease term Operating leases 17 years Finance leases 2 years Weighted-average discount rate Operating leases 7.2 % Finance leases 5.0 % Maturities of lease liabilities were as follows (in millions) : As of June 30, 2019 Operating Leases Finance Leases Remainder of 2019 $ 133 $ 85 2020 221 115 2021 255 86 2022 213 11 2023 180 — Thereafter 1,989 — Total undiscounted lease payments 2,991 297 Less: imputed interest (1,537 ) (15 ) Total lease liabilities $ 1,454 $ 282 As of June 30, 2019 , the Company had additional operating leases and finance leases, primarily for corporate offices and servers, that have not yet commenced of $254 million and $6 million , respectively. These operating and finance leases will commence between fiscal year 2019 and fiscal year 2021 with lease terms of 1 year to 11 years . Failed Sale-Leaseback In 2015, the Company entered into a JV agreement with a real estate developer (“JV Partner”) to develop parcels of land (“the Land”) in San Francisco on which to construct the Company’s new headquarters buildings (the “Buildings”). The Buildings are to consist of two adjacent towers totaling approximately 423,000 rentable square feet. In connection with the JV arrangement, the Company had acquired a 49% interest in the JV, the principal asset of which was the Land on which the Buildings are to be constructed. In November 2016, the Company and the JV Partner agreed to dissolve the JV and terminate the Company’s commitment to the lease of the Buildings (together “the real estate transaction”). Under the terms of the real estate transaction, the Company obtained the rights and title to the partially constructed building, will complete the development of the two office buildings and retain a 100% ownership of the buildings. In connection with the real estate transaction, the Company also executed two 75 -year land lease agreements (“Land Leases”). As of June 30, 2019 , commitments under the Land Leases total $169 million until February 2032. After 2032, the annual rent amount will adjust annually based on the prevailing consumer price index. For accounting purposes, the real estate transaction is in substance the sale-leaseback of the Company’s 49% indirect interest in the land. Due to the Company’s continuing involvement through a purchase option on the Land, the Company failed to qualify for sale-leaseback accounting. A failed sale-leaseback transaction is accounted for as a financing transaction whereby the cash and deferred sales proceeds received in the real estate transaction are recorded as a financing obligation. Accordingly, the Company’s previous ownership in the JV, which represented its ownership interest in the Land of $65 million , is included in property and equipment, net, and a corresponding financing obligation of $79 million is included in other long-term liabilities as of June 30, 2019 . Future land lease payments of $1.8 billion will be allocated 49% to the financing obligation under the failed sale-leaseback arrangement and 51% to the operating lease of land. Future minimum payments related to the financing obligations under failed sale-leaseback arrangement as of June 30, 2019 are summarized below (in millions) : Future Minimum Payments under Failed Sale-Leaseback Arrangements Fiscal Year Ending December 31, Remainder of 2019 $ 3 2020 6 2021 6 2022 6 2023 6 Thereafter 833 Total $ 860

Long-Term Debt and Revolving Cr

Long-Term Debt and Revolving Credit Arrangements	6 Months Ended
	Jun. 30, 2019
Debt Disclosure [Abstract]
Long-Term Debt and Revolving Credit Arrangements	Note 7 - Long-Term Debt and Revolving Credit Arrangements Components of debt, including the associated effective interest rates were as follows ( in millions , except for percentages): As of December 31, 2018 June 30, 2019 Effective Interest Rate 2016 Senior Secured Term Loan $ 1,124 $ 1,118 6.1 % 2018 Senior Secured Term Loan 1,493 1,485 6.2 % 2021 Convertible Notes 1,844 — 23.5 % 2022 Convertible Notes 1,030 — 13.7 % 2023 Senior Note 500 500 7.7 % 2026 Senior Note 1,500 1,500 8.1 % Total debt 7,491 4,603 Less: unamortized discount and issuance costs (595 ) (50 ) Less: current portion of long-term debt (27 ) (27 ) Total long-term debt $ 6,869 $ 4,526 2016 Senior Secured Term Loan In July 2016, the Company entered into a secured term loan agreement with a syndicate of lenders to issue senior secured floating-rate term loans for a total of $1.2 billion in proceeds, net of debt discount of $23 million and debt issuance costs of $13 million , with a maturity date of July 2023 (the “ 2016 Senior Secured Term Loan ”). On June 13, 2018, the Company entered into an amendment to the 2016 Senior Secured Term Loan agreement which increased the effective interest rate to 6.1% on the outstanding balance of the 2016 Senior Secured Term Loan as of the amendment date. The maturity date for the 2016 Senior Secured Term Loan remains July 13, 2023 . The amendment qualified as a debt modification that did not result in an extinguishment except for an immaterial syndicated amount of the loan. The 2016 Senior Secured Term Loan is guaranteed by certain material domestic restricted subsidiaries of the Company. The 2016 Senior Secured Term Loan agreement contains customary covenants restricting the Company and certain of its subsidiaries’ ability to incur debt, incur liens and undergo certain fundamental changes, as well as certain financial covenants specified in the contractual agreement. The Company was in compliance with all covenants as of June 30, 2019 . The credit agreement also contains customary events of default. The loan is secured by certain intellectual property of the Company and equity of certain material foreign subsidiaries. The 2016 Senior Secured Term Loan also contains restrictions on the payment of dividends. 2018 Senior Secured Term Loan In April 2018, the Company entered into a secured term loan agreement with a syndicate of lenders to issue secured floating-rate term loans totaling $1.5 billion in proceeds, net of debt discount of $8 million and debt issuance costs of $15 million , with a maturity date of April 2025 (the “ 2018 Senior Secured Term Loan ”). The 2018 Senior Secured Term Loan was issued on a pari passu basis with the existing 2016 Senior Secured Term Loan . The debt discount and debt issuance costs are amortized to interest expense at an effective interest rate of 6.2% . The 2018 Senior Secured Term Loan is guaranteed by certain material domestic restricted subsidiaries of the Company. The 2018 Senior Secured Term Loan agreement contains customary covenants restricting the Company and certain of its subsidiaries’ ability to incur debt, incur liens and undergo certain fundamental changes, as well as certain financial covenants specified in the contractual agreement. The Company was in compliance with all covenants as of June 30, 2019 . The credit agreement also contains customary events of default. The loan is secured by certain intellectual property of the Company and equity of certain material foreign subsidiaries. The fair values of the Company’s 2016 Senior Secured Term Loan and 2018 Senior Secured Term Loan was $1.1 billion and $1.5 billion , respectively, as of June 30, 2019 and were determined based on quoted prices in markets that are not active, which is considered a Level 2 valuation input. 2021 Convertible Notes During 2015, the Company issued convertible notes at par for a total of $1.7 billion in proceeds, net of $1 million in debt issuance costs, with an initial maturity date of January 2021 (the “ 2021 Convertible Notes ”). The 2021 Convertible Notes contained various extension options triggered by the events defined in the note agreement and allowed the maturity date to be extended up to 2030 . The interest rate was 2.5% per annum, payable semi-annually in arrears. During the first four years from the issuance date, at the election of the holders, interest was to be paid in cash or by increasing the principal amount of the 2021 Convertible Notes by payment in kind (“ PIK interest ”). The holders had elected to receive PIK interest during the first four years . The interest rate increased to 12.5% during the last 2 years of the initial term of the 2021 Convertible Notes and was to be paid in cash at the election of the Company. The interest rate during the maturity extension period varied from 3.5% to 12.5% depending on the type of extension option elected. On May 14, 2019 , the Company closed its IPO and the holders of 2021 Convertible Notes elected to convert the outstanding notes into common stock. Refer to Note 1 - Basis of Presentation and Summary of Significant Accounting Policies for further information. The 2021 Convertible Notes also contained other embedded features, such as conversion options that were exercisable upon the occurrence of various contingencies. The conversion options involved a discount to the conversion price, which ranged from 18.0% to 30.5% , increasing with the passage of time. All of the embedded features were analyzed to determine whether they should be bifurcated and separately accounted for as a derivative. Pursuant to such analysis, the Company valued and bifurcated the QIPO Conversion Option , which enabled the holders to convert their 2021 Convertible Notes to the shares offered in a QIPO at a predefined discount from the public offering price, and recorded its initial fair value of $1.1 billion as a discount on the 2021 Convertible Notes face amount. The debt discount was amortized to interest expense at an effective interest rate of 23.5% . The Company was amortizing the discount over the period until the maturity date of the respective note. The fair value of the QIPO Conversion Option was determined in accordance with the methodology described in Note 3 - Fair Value Measurement , and the changes in fair value were recognized as a component of other income (expense), net in the condensed consolidated statements of operations . The Company recorded $25 million and $339 million of expense for the three and six months ended June 30, 2018 , respectively, and $109 million of expense and $20 million of income for the three and six months ended June 30, 2019 , respectively, related to the change in the fair value of the 2021 Convertible Notes embedded derivative liability, which was included in total other income (expense), net in the condensed consolidated statements of operations . No value was attributed to other embedded features as they are triggered by events with a remote probability of occurrence. The agreement contained customary covenants that restricted the Company’s ability to, among other things, declare dividends or make certain distributions. 2022 Convertible Notes During 2015, the Company issued additional convertible notes at par for a total of $949 million in proceeds, net of $0.1 million in debt issuance costs, with an initial maturity date of June 2022 (the “ 2022 Convertible Notes ”). The Company had the option to elect to extend the maturity date of the 2022 Convertible Notes by one year if a material financial market disruption (as defined in the note agreement) existed at initial maturity. The interest rate was 2.5% per annum, compounded semi-annually and payable in PIK interest . If no conversion or settlement event was triggered prior to the 2022 Convertible Notes ’ maturity, the 2022 Convertible Notes were to be redeemed at an 8.0% internal rate of return (“ IRR ”) either immediately or over a 3 -year period, at the Company’s election. The 8.0% IRR payout at maturity was incorporated into the effective interest rate calculation. On May 14, 2019 , the Company closed its IPO and the holders of 2022 Convertible Notes elected to convert the outstanding notes into common stock, refer to Note 1 - Basis of Presentation and Summary of Significant Accounting Policies for further information. The 2022 Convertible Notes also contained other embedded features such as conversion options that were exercisable upon the occurrence of various contingencies. The conversion options involved a discount to the conversion price, which ranged from 8.1% to 44.5% increasing with the passage of time. All of the embedded features were analyzed to determine whether they should be bifurcated and separately accounted for as a derivative. Pursuant to such analysis, the Company valued and bifurcated the QIPO Conversion Option , which enabled the holders to convert the 2022 Convertible Notes to the shares offered in a QIPO at a predefined discount from the offering price, and recorded its initial fair value of $312 million as a discount on the 2022 Convertible Notes face amount. The debt discount was amortized to interest expense at an effective interest rate of 13.7% . The Company was amortizing the discount over the period until the initial maturity date of the respective note. The fair value of the QIPO Conversion Option was determined in accordance with the methodology described in Note 3 - Fair Value Measurement , and the changes in fair value were recognized as a component of other income (expense), net in the condensed consolidated statements of operations . The Company recorded $10 million and $63 million of expense for the three and six months ended June 30, 2018 , respectively, and $8 million of expense and $38 million of income for the three and six months ended June 30, 2019 , respectively, related to the change in the fair value of the 2022 Convertible Notes embedded derivative liability, which was included in total other income (expense), net in the condensed consolidated statements of operations . No value was attributed to other embedded features as they are triggered by events with a remote probability of occurrence. The agreement contained customary covenants that restricted the Company’s ability to, among other things, declare dividends or make certain distributions. 2023 and 2026 Senior Notes In October 2018 , the Company issued five -year notes with aggregate principal amount of $500 million due on November 1, 2023 and eight -year notes with aggregate principal amount of $1.5 billion due on November 1, 2026 (the “ 2023 and 2026 Senior Notes ”) in a private placement offering totaling $2.0 billion . The Company issued the 2023 and 2026 Senior Notes at par and paid approximately $9 million for debt issuance costs. The interest is payable semi-annually on May 1st and November 1st of each year at 7.5% per annum and 8.0% per annum, respectively, beginning on May 1, 2019 , and the entire principal amount is due at the time of maturity. The 2023 and 2026 Senior Notes are guaranteed by certain material domestic restricted subsidiaries of the Company. The indentures governing the 2023 and 2026 Senior Notes contain customary covenants restricting the Company and certain of its subsidiaries’ ability to incur debt and incur liens, as well as certain financial covenants specified in the contractual agreements. The Company was in compliance with all covenants as of June 30, 2019 . The fair values of the Company’s 2023 and 2026 Senior Notes were $531 million and $1.6 billion , respectively, as of June 30, 2019 and were determined based on quoted prices in markets that are not active, which is considered a Level 2 valuation input. The following table presents the amount of interest expense recognized relating to the contractual interest coupon, amortization of the debt discount and issuance costs, and the IRR payout with respect to the Senior Secured Term Loan, the Convertible Notes, and the Senior Notes for the three and six months ended June 30, 2018 and 2019 (in millions) : Three Months Ended June 30, Six Months Ended June 30, 2018 2019 2018 2019 Contractual interest coupon $ 57 $ 115 $ 89 $ 255 Amortization of debt discount and issuance costs 77 25 149 78 8% IRR payout 15 9 29 26 Total interest expense from long-term debt $ 149 $ 149 $ 267 $ 359 Revolving Credit Arrangements The Company has an unsecured revolving credit agreement with certain lenders, which provides for $2.3 billion in unsecured credit maturing on June 13, 2023 (“ Unsecured Revolving Credit Facility ”). In conjunction with the Company’s entry into the 2016 Senior Secured Term Loan , the revolving credit facility agreements were amended to include as collateral the same intellectual property of the Company and the same equity of certain material foreign subsidiaries that were pledged as collateral under the 2016 Senior Secured Term Loan . The credit facility may be guaranteed by certain material domestic restricted subsidiaries of the Company based on certain conditions. As of June 30, 2019 , no subsidiary met those conditions and, therefore, were not guarantors of the facility. The credit facility has a term of five years from the original execution date. The credit agreement contains customary covenants restricting the Company and certain of its subsidiaries’ ability to incur debt, incur liens, and undergo certain fundamental changes, as well as certain financial covenants specified in the contractual agreement. The credit agreement also contains customary events of default. The Unsecured Revolving Credit Facility also contains restrictions on the payment of dividends. As of June 30, 2019 , there was no balance outstanding on the Unsecured Revolving Credit Facility . Letters of Credit The Company’s insurance subsidiary maintains agreements for letters of credit to guarantee the performance of insurance related obligations that are collateralized by cash or investments of the subsidiary. For purposes of securing obligations related to leases and other contractual obligations, the Company also maintains an agreement for letters of credit, which is collateralized by the Company’s Unsecured Revolving Credit Facility and reduces the amount of credit available. As of December 31, 2018 and June 30, 2019 , the Company had letters of credit outstanding of $470 million and $497 million , respectively, of which the letters of credit that reduced the available credit under the Unsecured Revolving Credit Facility were $166 million and $191 million , respectively.

Assets and Liabilities Held for

Assets and Liabilities Held for Sale	6 Months Ended
	Jun. 30, 2019
Discontinued Operations and Disposal Groups [Abstract]
Assets and Liabilities Held for Sale	Note 8 - Assets and Liabilities Held for Sale Lion City Rentals In December 2017, the Company started exploring strategic options for the sale of Lion City Rentals Pte. Ltd. (“LCR”), a wholly-owned vehicle solutions subsidiary of the Company based in Singapore. The Company entered into a definitive agreement with ComfortDelGro (“Comfort”) and initiated all other actions required to complete the plan to sell the business and concluded that as of December 31, 2017, the transaction met all of the held for sale criteria. In May 2018, the agreement with Comfort was terminated without penalties. The Company remained committed to its plan to sell LCR and continued to present the assets and liabilities as held for sale as of December 31, 2018. In January 2019, an agreement was executed with Waydrive Holdings Pte. Ltd. (“Waydrive”) to purchase the LCR business, specifically 100% of the equity interests of LCR and its subsidiary LCRF Pte. Ltd. (“LCRF”). Fair value of consideration received included $310 million of cash for the assets and liabilities of LCR and LCRF and up to $33 million of contingent consideration receivable for certain VAT receivables and receivables from certain commercial counterparties. The resulting gain on disposal was not material to the Company. The transaction closed on January 25, 2019. The LCR businesses were previously included within the Company’s Core Platform segment. The following table summarizes the carrying values of the assets and liabilities classified as held for sale as of December 31, 2018 (in millions) : As of December 31, 2018 Assets held for sale Cash and cash equivalents $ 34 Accounts receivable, net 20 Prepaid expenses and other current assets 30 Property and equipment, net 322 Total assets held for sale 406 Liabilities held for sale Accounts payable 2 Accrued liabilities 2 Other current liabilities 7 Total liabilities held for sale 11 Net assets held for sale $ 395

Supplemental Financial Statemen

Supplemental Financial Statement Information	6 Months Ended
	Jun. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Supplemental Financial Statement Information	Note 9 - Supplemental Financial Statement Information Prepaid Expenses and Other Current Assets Prepaid expenses and other current assets as of December 31, 2018 and June 30, 2019 were as follows (in millions) : As of December 31, 2018 June 30, 2019 Prepaid expenses $ 265 $ 289 Other receivables 416 584 Other 179 256 Prepaid expenses and other current assets $ 860 $ 1,129 Accrued and Other Current Liabilities Accrued and other current liabilities as of December 31, 2018 and June 30, 2019 were as follows (in millions) : As of December 31, 2018 June 30, 2019 Accrued legal, regulatory and non-income taxes $ 1,134 $ 1,598 Accrued Partner liability 459 748 Accrued professional and contractor services 298 383 Accrued compensation and employee benefits 261 282 Accrued marketing expenses 152 146 Other accrued expenses 160 276 Income and other tax liabilities 157 192 Government and airport fees payable 104 129 Short-term finance lease obligation for computer equipment 110 133 Other 322 359 Accrued and other current liabilities $ 3,157 $ 4,246 Other Long-Term Liabilities Other long-term liabilities as of December 31, 2018 and June 30, 2019 were as follows (in millions) : As of December 31, 2018 June 30, 2019 Convertible debt embedded derivatives (Note 7) $ 2,018 $ — Deferred tax liabilities 1,072 1,065 Financing obligation 436 80 Income tax payable 80 65 Other 466 275 Other long-term liabilities $ 4,072 $ 1,485 Accumulated Other Comprehensive Income (Loss) The changes in composition of accumulated other comprehensive income (loss), net of tax, for the six months ended June 30, 2018 and 2019 were as follows (in millions) : Foreign Currency Translation Adjustments Unrealized Gains (Losses) on Available-for-Sale Securities, Net of Tax Total Balance as of December 31, 2017 $ (3 ) $ — $ (3 ) Other comprehensive income (loss) before reclassifications (65 ) 39 (26 ) Amounts reclassified from accumulated other comprehensive income (loss) — — — Other comprehensive income (loss) (65 ) 39 (26 ) Balance as of June 30, 2018 $ (68 ) $ 39 $ (29 ) Foreign Currency Translation Adjustments Unrealized Gains (Losses) on Available-for-Sale Securities, Net of Tax Total Balance as of December 31, 2018 $ (228 ) $ 40 $ (188 ) Other comprehensive income (loss) before reclassifications 17 4 21 Amounts reclassified from accumulated other comprehensive income (loss) — — — Other comprehensive income (loss) 17 4 21 Balance as of June 30, 2019 $ (211 ) $ 44 $ (167 ) Other Income (Expense), Net The components of other income (expense), net, for the three and six months ended June 30, 2018 and 2019 were as follows (in millions): Three Months Ended June 30, Six Months Ended June 30, 2018 2019 2018 2019 Interest income $ 24 $ 64 $ 42 $ 108 Foreign currency exchange gains (losses), net (37 ) (7 ) (24 ) (8 ) Gain on business divestitures (1) 40 — 3,201 — Gain (loss) on debt and equity securities, net (2) — (2 ) 1,984 14 Change in fair value of embedded derivatives (35 ) (117 ) (402 ) 58 Gain on extinguishment of convertible notes and settlement of derivative — 444 — 444 Other 71 16 199 42 Other income (expense), net $ 63 $ 398 $ 5,000 $ 658 (1) During the six months ended June 30, 2018 , gain on business divestitures primarily includes a $2.2 billion gain on the sale of the Company’s Southeast Asia operations to Grab Holding Inc. (“Grab”) and a $954 million gain on the disposal of the Company’s Uber Russia/CIS operations recognized in the first quarter of 2018 . On March 25, 2018, two wholly-owned subsidiaries of the Company signed and completed an agreement with Grab pursuant to which Grab hired employees and acquired certain assets of the Company in the region, including Rider, Driver Partners, and Eater contracts in Southeast Asia. The net assets contributed by the Company were not material. In exchange, the Company received shares of Grab Series G preferred stock which was recorded at fair value as additional sale consideration. Refer to Note 4 - Equity Method Investments for more information on the disposal of the Company's Uber Russia/CIS operations. (2) During the six months ended June 30, 2018 , gain on debt and equity securities, net represents a $2.0 billion unrealized gain on the Company’s non-marketable equity securities related to Didi recognized in the first quarter of 2018 . Refer to Note 3 - Fair Value Measurement for further information.

Redeemable Convertible Preferre

Redeemable Convertible Preferred Stock, Common Stock, and Stockholders' Equity (Deficit)	6 Months Ended
	Jun. 30, 2019
Equity [Abstract]
Redeemable Convertible Preferred Stock, Common Stock, and Stockholders' Equity (Deficit)	Note 10 - Redeemable Convertible Preferred Stock, Common Stock, and Stockholders’ Equity (Deficit) Redeemable Convertible Preferred Stock As of December 31, 2018, there were warrants to purchase 150,071 shares of Series E redeemable convertible preferred stock and 922,655 shares of Series G redeemable convertible preferred stock outstanding. During the first quarter of 2019, the warrant to purchase Series G redeemable convertible preferred stock was exercised in full and the fair value of the warrant was reclassified to redeemable convertible preferred stock. During the second quarter of 2019, the warrant to purchase Series E redeemable convertible preferred stock was exercised and automatically converted to shares of common stock as a result of the IPO. Upon closing of the IPO, all shares of the Company’s outstanding redeemable convertible preferred stock automatically converted into 905 million shares of common stock. The Company’s board of directors has the authority to issue up to 10 million shares of preferred stock and to determine the price, rights, preferences, privileges and restrictions, including voting rights, of those shares without any further vote or action by the stockholders. As of June 30, 2019 , there was no preferred stock issued and outstanding. PayPal, Inc. (“PayPal”) Private Placement On May 16, 2019, the Company closed a private placement by PayPal, Inc. in which it issued and sold 11 million shares of its common stock at a purchase price of $45.00 per share and received aggregate proceeds of $500 million . Additionally, PayPal and the Company agreed to extend their global partnership, including a commitment to jointly explore certain commercial collaborations. Restricted Common Stock The Company has granted restricted common stock to certain continuing employees, primarily in connection with acquisitions. Vesting of this stock may be dependent on a combination of service and performance conditions that become satisfied upon the occurrence of a qualifying event. The Company has the right to repurchase shares for which the vesting conditions are not satisfied. The following table summarizes the activity related to the Company’s restricted common stock for the six months ended June 30, 2019 (in thousands, except per share amounts): Number of Shares Weighted-average Grant-Date Fair Value per Share Unvested restricted common stock as of December 31, 2018 898 $ 30.33 Granted — $ — Vested (353 ) $ 34.82 Canceled (37 ) $ 34.86 Unvested restricted common stock as of June 30, 2019 508 $ 26.88 Equity Incentive Plans The Company maintains two equity incentive plans: the 2013 Equity Incentive Plan (“ 2013 Plan ”) and the 2010 Stock Plan (“ 2010 Plan ” and collectively, “ Plans ”). The 2013 Plan serves as the successor to the 2010 Plan and provides for the issuance of incentive stock options (“ISOs”), nonqualified stock options (“NSOs”), stock appreciation rights (“ SARs ”), restricted stock and RSUs to employees, consultants and advisors of the Company. In January 2019, the Company’s board of directors approved an amendment to the 2013 Plan to increase the number of shares of common stock reserved for issuance by 85 million shares, for a total of 293 million shares reserved. In March 2019, the Company’s board of directors adopted the 2019 Equity Incentive Plan (“2019 Plan”). The 2019 Plan was approved in April 2019 with 130 million shares of common stock reserved for future issuance. The 2019 Plan became effective on May 9, 2019 the date of the underwriting agreement between the Company and the underwriters for the IPO. The 2019 Plan is the successor to the 2013 Plan. The number of shares of the Company’s common stock available for issuance under the 2019 Plan automatically increases on January 1 of each year, for a period of not more than ten years , commencing on January 1, 2020 and ending on (and including) January 1, 2029 by the lesser of (a) 5% of the total number of the shares of common stock outstanding on December 31 of the immediately preceding calendar year, and (b) such number of shares determined by the Company’s board of directors. The Company’s 2019 Plan provides for the grant of ISOs, NSOs, SARs, restricted stock awards, RSUs, performance-based awards, and other awards (that are based in whole or in part by reference to the Company’s common stock) (collectively, “awards”). ISOs may be granted only to the Company’s employees, including the Company’s officers, and the employees of any parent or subsidiary. All other awards may be granted to the Company’s employees, including the Company’s officers, the Company’s non-employee directors and consultants, and the employees and consultants of the Company’s affiliates. Stock Option and SAR Activity A summary of stock option and SAR activity for the six months ended June 30, 2019 is as follows (in millions, except share amounts which are reflected in thousands, per share amounts, and years): SARs Outstanding Number of SARs Options Outstanding Number of Shares Weighted-Average Exercise Price Per Share Weighted-Average Remaining Contractual Life (in years) Aggregate Intrinsic Value As of December 31, 2018 758 42,936 $ 9.22 5.74 $ 1,456 Awards granted 73 250 $ 43.06 Awards exercised — (1,178 ) $ 2.39 Awards forfeited (11 ) (70 ) $ 32.71 As of June 30, 2019 820 41,938 $ 9.61 5.25 $ 1,572 Vested and expected to vest as of June 30, 2019 632 34,972 $ 4.34 4.87 $ 1,497 Exercisable as of June 30, 2019 632 34,972 $ 4.34 4.87 $ 1,497 RSU Activity The following table summarizes the activity related to the Company’s RSUs for the six months ended June 30, 2019 . For purposes of this table, vested RSUs represent the shares for which the service condition had been fulfilled during six months ended June 30, 2019 (in thousands, except per share amounts): Number of Shares Weighted-Average Unvested and outstanding as of December 31, 2018 75,835 $ 37.20 Granted 39,824 $ 44.32 Vested (17,655 ) $ 36.35 Canceled (5,420 ) $ 39.86 Unvested and outstanding as of June 30, 2019 92,584 $ 42.70 Stock-Based Compensation Expense Stock-based compensation expense is allocated based on the cost center to which the award holder belongs. The following table summarizes total stock-based compensation expense by function for the three and six months ended June 30, 2018 and 2019 (in millions) : Three Months Ended June 30, Six Months Ended June 30, 2018 2019 2018 2019 Operations and support $ 2 $ 404 $ 7 $ 405 Sales and marketing 1 212 4 213 Research and development 5 2,557 11 2,560 General and administrative 12 768 61 774 Total $ 20 $ 3,941 $ 83 $ 3,952 As of June 30, 2019 , there was $2.5 billion of unamortized compensation costs related to all unvested awards. The unamortized compensation costs are expected to be recognized over a weighted-average period of approximately 2.1 years . The Company has granted RSAs, RSUs, SARs, and stock options that vest only upon the satisfaction of both time-based service and performance-based conditions. Through May 9, 2019 , no stock-based compensation expense had been recognized for such awards with a performance condition based on the occurrence of a qualifying event (such as an IPO), as such qualifying event was not probable. Upon the Company’s IPO, the Company recognized $3.6 billion of stock-based compensation expense related to such awards. To meet the related tax withholding requirements, the Company withheld 29 million of the 76 million shares of common stock issued. The 29 million shares of common stock withheld for taxes were returned to the shares reserved for future issuance under the Company’s 2019 Plan. Based on the IPO public offering price of $45.00 per share, the tax withholding obligation was $1.3 billion . For additional information related to the Company’s IPO, refer to Note 1 - Basis of Presentation and Summary of Significant Accounting Policies . The tax benefits recognized in income for stock-based compensation arrangements were not material during the three and six months ended June 30, 2018 and 2019 , respectively. 2019 Employee Stock Purchase Plan In March 2019, the Company’s board of directors adopted the Company’s Employee Stock Purchase Plan (“ESPP”), and in April 2019, the Company’s stockholders approved its ESPP. The ESPP became effective on May 9, 2019, the date of the underwriting agreement between the Company and the underwriters for the IPO. There are 25 million shares of common stock reserved for issuance under the ESPP. The number of shares of the Company’s common stock available for issuance under the ESPP automatically increases on January 1 of each year, beginning in 2020 and continuing through 2029, by the lesser of (a) 1.0% of the total number of shares of common stock outstanding on December 31 of the immediately preceding calendar year, and (b) 25,000,000 shares. However, the Company’s board of directors or compensation committee may reduce the amount of the increase in any particular year. The stock-based compensation expense recognized for the ESPP was not material during the three months ended June 30, 2019 .

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Note 11 - Income Taxes The Company computes its quarterly income tax expense/(benefit) by using a forecasted annual effective tax rate and adjusts for any discrete items arising during the quarter. The Company recorded an income tax expense of $28 million and $604 million for the three and six months ended June 30, 2018 , respectively, and an income tax benefit of $2 million and an income expense of $17 million for the three and six months ended June 30, 2019 , respectively. During the three months ended June 30, 2018 , income tax expense was primarily driven by current tax on foreign earnings partially offset by the benefit of U.S. losses. During the six months ended June 30, 2018 , income tax expense was primarily driven by deferred U.S. tax expense related to the Company’s investment in Didi and Grab, deferred China tax related to the Company’s investment in Didi, and to a lesser extent, the benefit of U.S. losses and current tax on foreign earnings. During the three and six months ended June 30, 2019 , income tax expense was primarily driven by current tax on foreign earnings offset by a partial benefit from U.S. losses. The primary differences between the effective tax rate and the federal statutory tax rate are due to the valuation allowance on the Company’s U.S. and Netherlands’ deferred tax assets and foreign tax rate differences. In March 2019, the Company initiated a series of transactions resulting in changes to its international legal structure, including a redomiciliation of a subsidiary to the Netherlands and a transfer of certain intellectual property rights among wholly owned subsidiaries, primarily to align its structure to its evolving operations. The redomiciliation resulted in a step-up in the tax basis of intellectual property rights and a correlated increase in foreign deferred tax assets in an amount of $6.1 billion , net of a reserve for uncertain tax positions of $1.3 billion . Based on available objective evidence, management believes it is not more-likely-than-not that these additional foreign deferred tax assets will be realizable as of June 30, 2019 and, therefore, are offset by a full valuation allowance to the extent not offset by reserves from uncertain tax positions. During the six months ended June 30, 2019 , the amount of gross unrecognized tax benefits increased by $1.2 billion , of which substantially all, if recognized, would not affect the annual effective tax rate as these unrecognized tax benefits would increase deferred tax assets that would be subject to a full valuation allowance. In the second quarter of 2019, the Company settled the IRS audit for the tax years 2013 and 2014. The settlement resulted in a reduction of unrecognized tax benefits of $141 million , which did not affect the annual effective tax rate, as these unrecognized tax benefits decreased deferred tax assets that were subject to a full valuation allowance. The Company is subject to taxation in the U.S. and various state and foreign jurisdictions. The Company is also under routine examination by various state and foreign tax authorities. The Company believes that adequate amounts have been reserved in these jurisdictions. To the extent the Company has tax attribute carryforwards, the tax years in which the attribute was generated may still be adjusted upon examination by federal, state or foreign tax authorities to the extent utilized in a future period. For the Company’s major tax jurisdictions, the tax years 2010 through 2019 remain open; the major tax jurisdictions are the U.S., Brazil, Netherlands, Mexico, United Kingdom, Australia, Singapore, and India. Although the timing of the resolution and/or closure of audits is highly uncertain, it is reasonably possible that the balance of gross unrecognized tax benefits could significantly change in the next 12 months. Given the number of years remaining subject to examination and the number of matters being examined, the Company is unable to estimate the full range of possible adjustments to the balance of gross unrecognized tax benefits. In the event the Company experiences an ownership change within the meaning of Section 382 of the Internal Revenue Code (“IRC”), the Company’s ability to utilize net operating losses, tax credits and other tax attributes may be limited. The most recent analysis of the Company’s historical ownership changes was completed through June 30, 2019. Based on the analysis, the Company does not anticipate a current limitation on the tax attributes.

Net Income (Loss) Per Share

Net Income (Loss) Per Share	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Net Income (Loss) Per Share	Note 12 - Net Income (Loss) Per Share The following table sets forth the computation of basic and diluted net income (loss) per share attributable to common stockholders (in millions, except share amounts which are reflected in thousands, and per share amounts): Three Months Ended June 30, Six Months Ended June 30, 2018 2019 2018 2019 Basic net income (loss) per share: Numerator Net income (loss) $ (878 ) $ (5,246 ) $ 2,870 $ (6,262 ) Less: net loss attributable to redeemable non-controlling interest, net of tax — 10 — 14 Less: noncumulative dividends to preferred stockholders — — (1,086 ) — Less: undistributed earnings to participating securities — — (1,200 ) — Net income (loss) attributable to common stockholders $ (878 ) $ (5,236 ) $ 584 $ (6,248 ) Denominator Basic weighted-average common stock outstanding 440,958 1,110,704 439,022 783,900 Basic net income (loss) per share attributable to common stockholders $ (1.99 ) $ (4.72 ) $ 1.33 $ (7.97 ) Diluted net income (loss) per share: Numerator Net income (loss) attributable to common stockholders $ (878 ) $ (5,236 ) $ 584 $ (6,248 ) Add: Change in fair value of MLU B.V. put/call feature (10 ) — (10 ) (6 ) Add: noncumulative dividends to preferred stockholders — — — — Diluted net income (loss) attributable to common stockholders $ (888 ) $ (5,236 ) $ 574 $ (6,254 ) Denominator Number of shares used in basic net income (loss) per share computation 440,958 1,110,704 439,022 783,900 Weighted-average effect of potentially dilutive securities: Common stock subject to a put/call feature 450 — 551 82 Stock options — — 35,147 — RSUs to settle fixed monetary awards — — 1,486 — Other — — 188 — Diluted weighted-average common stock outstanding 441,408 1,110,704 476,394 783,982 Diluted net income (loss) per share attributable to common stockholders $ (2.01 ) $ (4.72 ) $ 1.20 $ (7.98 ) On May 14, 2019 , the Company completed its IPO, in which it issued and sold 180 million shares of its common stock at a price of $45.00 per share. On that date, all of the Company’s outstanding redeemable convertible preferred stock automatically converted into 905 million shares of common stock, and the holders of the 2021 Convertible Notes and the 2022 Convertible Notes elected to convert the outstanding notes into common stock, resulting in the issuance of 94 million shares of common stock. These shares were included in the Company’s issued and outstanding common stock starting on that date. Refer to Note 1 - Basis of Presentation and Summary of Significant Accounting Policies for further information. The following potentially dilutive outstanding securities as of June 30, 2018 and 2019 were excluded from the computation of diluted net income (loss) per share because their effect would have been anti-dilutive for the periods presented, or issuance of such shares is contingent upon the satisfaction of certain conditions which were not satisfied by the end of the period (in thousands) : As of June 30, 2018 2019 Redeemable convertible preferred stock 893,301 — Convertible notes 198,484 — Stock options 8,045 41,937 Restricted common stock with performance condition 1,022 — Common stock subject to repurchase 9,408 1,351 Warrants to purchase redeemable convertible preferred stock 1,126 — SARs 787 — RSUs to settle fixed monetary awards 585 838 RSUs 118,256 92,838 Warrants to purchase common stock 178 187 Total 1,231,192 137,151

Segment Information and Geograp

Segment Information and Geographic Information	6 Months Ended
	Jun. 30, 2019
Segment Reporting [Abstract]
Segment Information and Geographic Information	Note 13 - Segment Information and Geographic Information The Company operates its business as two operating and reportable segments: Core Platform and Other Bets. The Company determined its operating segments based on how the chief operating decision maker (“CODM”) manages the business, allocates resources, makes operating decisions and evaluates operating performance. The Company’s operating performance measure is contribution profit (loss). The CODM does not evaluate operating segments using asset information. Contribution profit (loss) is defined as revenue less the following expenses: cost of revenue, operations and support, sales and marketing, and general and administrative and research and development expenses associated with the Core Platform and Other Bets segments. Contribution profit (loss) also excludes any non-cash items or items that management does not believe are reflective of the Company’s ongoing core operations (as shown in the table below). Included in the reconciliation below are expenses associated with research and development activities that are not directly attributable to the Core Platform and Other Bets segments: ATG and Other Technology Programs. ATG includes research and development expenses associated with developing autonomous vehicle technology. Other Technology Programs includes research and development expenses associated with developing all other next-generation technologies. In June 2019, the Company announced a number of leadership and organizational changes. These organizational changes will be effective in the third quarter of 2019. The Company is currently evaluating the impact to its operating and reportable segments based on how the businesses will be managed subsequent to the changes. During the three and six months ended June 30, 2019, the Company’s CODM continued to manage the business, allocate resources, make operating decisions, and evaluate operating performance under the existing operating and reportable segments: Core Platform and Other Bets. The following table provides information about the Company’s segments and a reconciliation of the total segment contribution profit (loss) to loss from operations (in millions): Three Months Ended June 30, Six Months Ended June 30, 2018 2019 2018 2019 Contribution profit (loss): Core Platform $ 369 $ 220 $ 796 $ 103 Other Bets (28 ) (122 ) (48 ) (193 ) Total segment contribution profit (loss) 341 98 748 (90 ) Reconciling items: Research and development expenses related to ATG and Other Technology Programs (1) (129 ) (105 ) (246 ) (202 ) Unallocated research and development and general and administrative expenses (1), (2) (488 ) (649 ) (956 ) (1,233 ) Depreciation and amortization (98 ) (123 ) (186 ) (269 ) Stock-based compensation expense (20 ) (3,941 ) (83 ) (3,952 ) Legal, tax, and regulatory reserves and settlements (252 ) (380 ) (252 ) (380 ) Driver appreciation award — (299 ) — (299 ) Payroll tax on IPO stock-based compensation — (86 ) — (86 ) Asset impairment/loss on sale of assets (81 ) — (113 ) (8 ) Acquisition and financing related expenses — — (15 ) — Gain on restructuring of lease arrangement 4 — 4 — Impact of 2018 Divested Operations (1), (3) (16 ) — (118 ) — Loss from operations $ (739 ) $ (5,485 ) $ (1,217 ) $ (6,519 ) (1) Excluding stock-based compensation expense. (2) Unallocated research and development expenses include costs that are not directly attributable to the Core Platform and Other Bets segments. These include mapping and payment technologies and support and development of the internal technology infrastructure. Unallocated general and administrative expenses include certain shared costs such as finance, accounting, tax, human resources, information technology and legal costs. The Company’s allocation methodology is periodically evaluated and may change. (3) Defined as the Company’s 2018 operations in (i) Southeast Asia prior to the sale of those operations to Grab and (ii) Russia/CIS prior to the formation of the Company’s Yandex.Taxi joint venture. Geographic Information Revenue by geography is based on where the trip was completed or meal delivered. The following table sets forth revenue by geographic area for the three and six months ended June 30, 2018 and 2019 (in millions) : Three Months Ended June 30, Six Months Ended June 30, 2018 2019 2018 2019 United States $ 1,469 $ 1,853 $ 2,799 $ 3,610 Brazil 281 188 557 397 All other countries 1,018 1,125 1,996 2,258 Total revenue $ 2,768 $ 3,166 $ 5,352 $ 6,265 Revenue from external customers grouped by offerings is included in Note 2 - Revenue .

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 14 - Commitments and Contingencies Purchase Commitments The Company has commitments for network and cloud services, background checks, and other items in the ordinary course of business with varying expiration terms through 2022 . These amounts are determined based on the non-cancelable quantities or termination amounts to which the Company is contractually obligated. As of June 30, 2019 , there were no material changes to the Company’s purchase commitments disclosed in the financial statements included in the Prospectus . Contingencies From time to time, the Company may be a party to various claims, non-income tax audits and litigation in the normal course of business. As of December 31, 2018 and June 30, 2019 , the Company had recorded aggregate liabilities of $1.1 billion and $1.6 billion , respectively, in accrued and other current liabilities on the condensed consolidated balance sheets for all of its legal, regulatory and non-income tax matters that were probable and reasonably estimable. The Company is currently party to various legal and regulatory matters that have arisen in the normal course of business and include, among others, alleged independent contractor misclassification claims, Fair Credit Reporting Act (“FCRA”) claims, background check violations, consumer and driver class actions relating to pricing and advertising, unfair competition matters, intellectual property disputes, employment discrimination and other employment-related claims, Telephone Consumer Protection Act (“TCPA”) cases, Americans with Disabilities Act (“ADA”) cases, data and privacy matters, and other matters. With respect to the Company’s outstanding legal and regulatory matters, based on its current knowledge, the Company believes that the amount or range of reasonably possible loss will not, either individually or in the aggregate, have a material adverse effect on the Company’s business, financial position, results of operations, or cash flows. However, the outcome of such legal matters is inherently unpredictable and subject to significant uncertainties. O’Connor, et al., v. Uber Technologies, Inc. and Yucesoy v. Uber Technologies, Inc., et al. O’Connor and Yucesoy are two putative class actions that assert various independent contractor misclassification claims brought on behalf of certain Driver Partners in California and Massachusetts, respectively. The two cases were consolidated and both are pending in the United States District Court for the Northern District of California. Filed on August 16, 2013 in the United States District Court for the Northern District of California, the O’Connor action is a class action against the Company on behalf of all Driver Partners who contracted with the Company in California between 2009 and February 28, 2019 and seeks damages for tips and business expense reimbursement based on alleged independent contractor misclassification and unfair competition. The O’Connor action was stayed in the trial court pending the outcome of appeals before the Ninth Circuit Court of Appeals regarding the trial court’s orders denying the Company’s motions to compel arbitration, order certifying the class action, and order enjoining the Company’s enforcement of its arbitration agreement. The Ninth Circuit issued its rulings on those appeals on September 25, 2018, finding that the Company’s arbitration agreements were enforceable and accordingly, decertified the O’Connor class and remanded the case to the district court for further proceedings. Filed on June 2, 2014 in the Massachusetts Suffolk County Superior Court, the Yucesoy action is a class action against the Company on behalf of all Driver Partners in Massachusetts and seeks damages based on independent contractor misclassification, tips law violations and tortious interference with contractual and/or advantageous relations. Plaintiffs filed an amended complaint in the Yucesoy action on March 30, 2018 adding new class representatives, to which the Company filed a motion to compel arbitration and/or dismiss the action on April 26, 2018. On March 11, 2019, the parties entered into a Settlement Agreement which provides that the Company will pay $20 million to settle the O’Connor and Yucesoy actions. The proposed settlement does not require the Company to start classifying Driver Partners as employees in California or Massachusetts and does not include those Driver Partners who are subject to arbitration. Plaintiffs filed a motion with the United States District Court for the Northern District of California seeking court approval of the settlement agreement. The motion for preliminary approval of the parties’ settlement agreement was heard on March 21, 2019, and preliminary approval was granted subject to certain conditions. The final approval hearing is set for August 29, 2019. In May 2019, the Company reached agreements to resolve independent contractor misclassification claims of Driver Partners in California and Massachusetts that have filed (or expressed an intention to file) arbitration demands. Under the agreements, certain Driver Partners are eligible for settlement payments, subject to a threshold number of the covered Driver Partners entering into individual settlement agreements. The Company anticipates the aggregate amount of payments to Driver Partners under these individual settlement agreements, together with attorneys’ fees, will fall within an approximate range of $146 million to $170 million . State Unemployment Taxes In December 2016, following an audit opened in 2014 investigating whether Driver Partners were independent contractors or employees, the Company received a Notification of Assessment from the Employment Development Department, State of California, for payroll tax liabilities. The notice retroactively imposed various payroll tax liabilities on the Company, including unemployment insurance, employment training tax, state disability insurance, and personal income tax. The Company has filed a petition with an administrative law judge of the California Unemployment Insurance Appeals Board appealing the assessment. Google v. Levandowski & Ron; Google v. Levandowski On October 28, 2016, Google filed arbitration demands against each of Anthony Levandowski and Lior Ron, former employees of Google, alleging breach of their respective employment agreements with Google, fraud and other state law violations (due to soliciting Google employees and starting a new venture to compete with Google’s business in contravention of their respective employment agreements). Google seeks damages, injunctive relief, and restitution. The arbitration hearing was held from April 30 to May 11, 2018. On March 26, 2019, the arbitration panel issued an interim award, finding against each of Google’s former employees and awarding $127 million against Anthony Levandowski and $1 million for which both Anthony Levandowski and Lior Ron are jointly and severally liable. In July 2019, Google submitted briefing on its request for interest, attorneys fees, and costs related to these claims. Pursuant to a contractual obligation, Uber is indemnifying both employees with respect to certain claims. Whether Uber is ultimately responsible for such indemnification, however, depends on the exceptions and conditions set forth in the indemnification agreement. The ultimate resolution of the matter could result in a possible loss of up to $62 million or more (depending on the date of the final award) in excess of the amount accrued. Uber is not a party to either of these arbitrations. Taiwan Regulatory Fines Prior to the Company adjusting and re-launching its operating model in April 2017 to a model where government-approved rental companies provide transport services to Riders, Driver Partners in Taiwan and Uber Taiwan have been fined by Taiwan’s Ministry of Transportation and Communications in significant numbers across Taiwan. On January 6, 2017, a new Highways Act came into effect in Taiwan which increased maximum fines from New Taiwan Dollar (“NTD”) 150,000 to NTD 25 million per offense. The Company suspended its service in Taiwan from February 10, 2017 to April 12, 2017, but a number of these fines were issued to Uber Taiwan in connection with rides that took place in January and February 2017 prior to the suspension. These fines have remained outstanding while Uber appeals the tickets through the courts. Beginning in July 2018, the Taiwan Supreme Court issued a number of positive rulings in which it rejected the government’s approach of issuing one ticket per ride. The Taiwan government continues to appeal these rulings to the Supreme Court. Copenhagen Criminal Prosecution In May 2017, the Danish police announced that they would use tax data about Driver Partners obtained from the Dutch tax authorities to prosecute Driver Partners for unlicensed taxi traffic. The tax data covers calendar years 2015 and prior. The prosecutor indicted four Driver Partners as test cases which have been heard by the Copenhagen City Court, the Appeal Court and finally the Supreme Court. In addition, on October 6, 2017, the Company has been preliminary charged with aiding and abetting illegal taxi traffic in 2015. In September 2018, the Danish Supreme Court ruled on these test cases that the Driver Partners were carrying out illegal taxi operations and fined them in the total amount of their earnings from performing ridesharing services. The Court also confirmed that the use of the relevant tax data obtained from the Dutch tax authorities was validly used as evidence in the prosecutions and was used to assess the fines payable. In January 2018, the Company received another request from the Danish tax authorities through the Dutch tax authorities to disclose tax data about Driver Partners for years 2016 and 2017. Such tax data for years 2016 to 2017 has subsequently been provided by the Company to the Danish tax authorities. On May 29, 2018, the Company received another set of indictment papers from the Danish prosecutor. On February 19, 2019, the Company was informed by the Danish prosecutor that it has issued a request for legal aid to the Danish prosecutor to serve additional indictment papers, relating to the Company’s activity in Denmark in 2016 and 2017. On May 13, 2019, the Company was notified by the Dutch tax authorities that data related to the Company’s activity in Denmark in 2016 and 2017 could not be used by Danish authorities for the purpose of attempting to establish fraud in connection with taxi licenses. The Company has not operated these services in Denmark since 2017 and currently does not have operations in Denmark. Malden Transportation v. Uber Technologies, Inc. Seven consolidated actions were filed in the United District Court for the District of Massachusetts by taxi medallion owners Malden Transportation, Inc., Anoush Cab, Inc., Dot Ave Cab, Inc., Gill & Gill, Inc., Max Luc Taxi, Inc., Sycoone Taxi, Inc., Taxi Maintenance, Inc. in late 2016 and early 2017 against the Company alleging unfair competition violations (on the grounds that the Company failed to comply with local taxi laws), as well as state and federal antitrust violations (on the grounds that the Company prices trips below cost in order to achieve a monopoly). Antitrust claims were dismissed, but the unfair competition claims remain. On May 15, 2019, Uber reached a tentative settlement with the plaintiffs in six of the seven actions, subject to negotiation of specific terms and execution of a settlement agreement. A bench trial of the seventh action (Anoush Cab, Inc.), began on July 18, 2019 and concluded on August 2, 2019. The parties submitted their proposed findings of fact and conclusions of law to the court on August 6, 2019. Swiss Social Security Reclassification Several Swiss government bodies currently classify Driver Partners as employees of Uber Switzerland for social security purposes. A number of such decisions have been made by these governmental bodies. The Company is challenging each of them. The Cantonal Court of Zurich issued a ruling with regard to certain test cases on July 20, 2018. The court canceled the decisions on the grounds that certain decisions were made against the Company’s Swiss local entity without proof that there is a contractual relationship between the Company’s Swiss local entity and the Driver Partners (who actually contract with Uber B.V.). This ruling was not appealed and the Swiss governmental bodies continue to investigate the identity of the employer. On July 5, 2019, the Swiss governmental bodies issued four decisions by which they reclassified four drivers as Uber B.V. and Rasier B.V. employees and consider that Uber Switzerland should pay social security contributions. The Company plans to appeal those decisions. The Company’s chances of success on the merits are still uncertain and any possible loss or range of loss cannot be estimated. Non-Income Tax Matters The Company recorded an estimated liability for contingencies related to non-income tax matters and is under audit by various domestic and foreign tax authorities with regard to such matters. The subject matter of these contingent liabilities and non-income tax audits primarily arises from the Company’s transactions with its Driver Partners, as well as the tax treatment of certain employee benefits and related employment taxes. In jurisdictions with disputes connected to transactions with Driver Partners, disputes involve the applicability of transactional taxes (such as sales, value added and similar taxes) to services provided, as well as the applicability of withholding tax on payments made to such Driver Partners. For example, the Company is involved in a proceeding in the UK involving HMRC, the tax regulator in the UK, which is seeking to classify the Company as a transportation provider. Being classified as a transportation provider would result in a VAT ( 20% ) on Gross Bookings or on the service fee that the Company charges Drivers, both retroactively and prospectively. HMRC could also determine that the Company is an employer for tax purposes, resulting in up to 14% national insurance contributions being payable by the Company on driver income. Further, if Drivers are determined to be workers, they may be entitled to additional benefits and payments, and the Company may be subject to penalties, back taxes, and fines. The Company believes that the position of HMRC and the regulators in similar disputes and audits is without merit and is defending itself vigorously. The Company’s estimated liability is inherently subjective due to the complexity and uncertainty of these matters and the judicial processes in certain jurisdictions, therefore, the final outcome could be different from the estimated liability recorded. Other Legal and Regulatory Matters The Company has been subject to various government inquiries and investigations surrounding the legality of certain of the Company’s business practices, compliance with global regulatory requirements, such as antitrust and Foreign Corrupt Practices Act requirements, data protection and privacy laws, and the infringement of certain intellectual property rights. The Company has investigated many of these matters and is implementing a number of recommendations to its managerial, operational and compliance practices, as well as seeking to strengthen its overall governance structure. In many cases, the Company is unable to predict the outcomes and implications of these inquiries and investigations on the Company’s business which could be time consuming, costly to investigate and require significant management attention. Furthermore, the outcome of these inquiries and investigations could negatively impact the Company’s business, reputation, financial condition and operating results, including possible fines and penalties and requiring changes to operational activities and procedures. Indemnifications In the ordinary course of business, the Company often includes standard indemnification provisions in its arrangements with third parties. Pursuant to these provisions, the Company may be obligated to indemnify such parties for losses or claims suffered or incurred in connection with its activities or non-compliance with certain representations and warranties made by the Company. In addition, the Company has entered into indemnification agreements with its officers, directors, and certain current and former employees, and its certificate of incorporation and bylaws contain certain indemnification obligations. It is not possible to determine the maximum potential loss under these indemnification provisions / obligations because of the unique facts and circumstances involved in each particular situation.

Variable Interest Entities (VIE

Variable Interest Entities (VIEs)	6 Months Ended
	Jun. 30, 2019
Variable Interest Entity [Abstract]
Variable Interest Entities (VIEs)	Note 15 - Variable Interest Entities ("VIEs") Consolidated VIE As of December 31, 2017, the Company consolidated a VIE entity as it had an option to acquire all the outstanding membership interests in the entity and had the obligation to fully fund the entity’s operations. In 2018, the Company exercised its option. Under an amended agreement, and upon satisfaction of certain closing conditions associated with exercising its option, the Company created a new majority-owned subsidiary, Uber Freight. Refer to Note 16 - Non-Controlling Interest for further information. Total assets included on the condensed consolidated balance sheets for this VIE as of December 31, 2018 and June 30, 2019 were $115 million and $132 million , respectively. Total liabilities included on the condensed consolidated balance sheets for this VIE as of December 31, 2018 and June 30, 2019 were not material . Unconsolidated VIE Mission Bay 3 & 4 The Mission Bay 3 & 4 joint venture (“JV”) refers to Event Center Office Partners, LLC (“ECOP”), a joint venture entity established in March 2018, by Uber and two companies (“LLC Partners”) to manage the operation of two office buildings owned by two ECOP wholly-owned subsidiaries. The Company contributed $136 million cash in exchange for a 45% interest in ECOP. Each of the two LLC Partners owns 45% and 10% , respectively. The amount of contributed cash was recorded as an investment for $136 million as of June 30, 2019 . The remaining construction costs will be funded through a construction loan obtained by ECOP where the Company together with the two LLC Partners guarantee payments and performance of the loan when it becomes due and any payment of costs incurred by the lender under limited situations. The maximum collective guarantee liability is up to $50 million . The Company evaluated the nature of its investment in ECOP and determined that ECOP is a VIE during the construction period; however, the Company is not the primary beneficiary as decisions are made jointly between parties and therefore does not have the power to direct activities that most significantly impact the VIE. The Company will reevaluate if ECOP meets the definition of a VIE upon specific reconsideration events, including completion of construction. The maximum exposure to loss represents the potential loss recognized by the Company relating to these unconsolidated entities. The Company believes that its maximum exposure to loss is limited because it is a member of the limited liability company. The Company’s maximum exposure to loss differs from the carrying value of the variable interests. The maximum exposure to loss is dependent on the nature of the variable interests in the VIE and is limited to the investment balances and notional amounts of guarantees. As of December 31, 2018 and June 30, 2019 , the carrying amount of assets and liabilities recognized on the condensed consolidated balance sheets related to the Company’s interests in unconsolidated VIEs and the Company’s maximum exposure to loss relating to unconsolidated VIEs was as follows (in millions) : As of December 31, 2018 June 30, 2019 Investment $ 78 $ 136 Additional cash contribution 58 — Limited guarantee 50 50 Maximum exposure to loss $ 186 $ 186 Uber has significant influence over ECOP and accounts for its investment in ECOP under the equity method. No equity earnings have been recognized as of June 30, 2019 , since the sole activity of the ECOP consists of construction of the assets and costs incurred are capitalized. Once construction is complete, at each reporting period, the Company will adjust the carrying value of its investment to reflect its proportionate share of ECOP’s income or loss, and any impairments, with a corresponding credit or debit, respectively, to loss from equity method investment, net of tax in the condensed consolidated statements of operations . As of June 30, 2019 , the Company determined that no impairment of its equity method investments existed.

Non-Controlling Interest

Non-Controlling Interest	6 Months Ended
	Jun. 30, 2019
Noncontrolling Interest [Abstract]
Non-Controlling Interest	Note 16 - Non-Controlling Interest Non-controlling interest is classified in mezzanine equity as it is redeemable on an event that is not solely in the control of the Company. The non-controlling interest is redeemable at fair value beginning at future dates at the holders’ option and prior to the occurrence of certain events. The non-controlling interest is not remeasured to fair value because it is currently not probable that the non-controlling interest will become redeemable because of the likelihood of occurrence of certain events that would prevent it from becoming redeemable. If the non-controlling interest becomes probable of being redeemable, the Company will remeasure the non-controlling interest with changes in the carrying value recognized in additional paid-in capital. As of December 31, 2018, the Company owned 100% of the issued and outstanding capital stock of its subsidiary that operates its JUMP e-bike and e-scooter products, or 81% on a fully-diluted basis if all shares reserved for issuance under its JUMP employee incentive plan were issued and outstanding. In April 2019, the JUMP employee incentive plan was terminated and the JUMP subsidiary became a wholly-owned subsidiary of the Company. All unvested and unexercised equity awards under the terminated JUMP employee incentive plan were canceled. Certain JUMP employees who held such unvested and unexercised equity awards under the terminated JUMP employee incentive plan received grants of the Company’s RSUs pursuant to the 2013 Plan. The fair value of the RSU grants and the impact on the Company’s financial statements were not material. As of December 31, 2018 and June 30, 2019, the Company owned 89% of the issued and outstanding capital stock of its subsidiary that operates its Uber Freight offering, or 80% on a fully-diluted basis if all shares reserved for issuance under the Company’s Uber Freight employee incentive plan were issued and outstanding. As of June 30, 2019 , no equity awards under the Uber Freight employee incentive plan had been granted. The minority stockholders of the Company’s subsidiary that operate its Uber Freight offering, including any holders of equity awards issued under the employee equity incentive plans and employees who hold fully vested shares, have put rights to sell certain of their equity interests at fair market value at specified periods of time that terminates upon the earliest of the closing of a liquidation transaction or an IPO of the subsidiary. Should the put rights be exercised, they can be satisfied in either cash, Uber stock, or a combination of cash and Uber stock based upon the Company’s election. The Company attributes the pro rata share of the Uber Freight’s net income or loss to the redeemable non-controlling interests based on the outstanding ownership of the minority shareholders during the period.

Basis of Presentation and Sum_2

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial reporting. The condensed consolidated balance sheet as of December 31, 2018 included herein was derived from the audited consolidated financial statements as of that date but does not include all of the information and notes required by GAAP for complete financial statements. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. As such, the information included in this Quarterly Report on Form 10-Q should be read in conjunction with the audited consolidated financial statements and the related notes thereto as of and for the year ended December 31, 2018 , included in the Company’s final prospectus filed with the SEC pursuant to Rule 424(b) under the Securities Act of 1933, as amended (“the Securities Act”), on May 13, 2019 (“the Prospectus”). In the opinion of management, these financial statements include all adjustments, which are of a normal recurring nature, necessary for a fair statement of the financial position, results of operations, cash flows and the change in equity for the periods presented. There have been no changes to the Company’s significant accounting policies described in the Prospectus that have had a material impact on the Company’s condensed consolidated financial statements and related notes, except for the adoption of the new accounting standard related to lease accounting.
Basis of Consolidation	Basis of Consolidation The condensed consolidated financial statements of the Company include the accounts of the Company and entities consolidated under the variable interest and voting models. All intercompany balances and transactions have been eliminated. Refer to Note 15 - Variable Interest Entities ("VIEs") for further information.
Use of Estimates	Use of Estimates The preparation of the Company’s unaudited condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions, which affect the reported amounts in the financial statements and accompanying notes. Estimates are based on historical experience, where applicable, and other assumptions which management believes are reasonable under the circumstances. On an ongoing basis, the Company evaluates its estimates, including those related to the incremental borrowing rate (“IBR”) applied in lease accounting, accounts receivable allowances, fair values of investments and other financial instruments, useful lives of amortizable long-lived assets and intangible assets, stock-based compensation, income and non-income taxes, insurance reserves, and contingent liabilities. These estimates are inherently subject to judgment and actual results could differ from those estimates.
Leases	Leases The Company accounts for leases in accordance with ASC 842, Leases (“ASC 842”), which requires lessees to recognize leases on-balance sheet and disclose key information about leasing arrangements. The Company adopted ASC 842 along with all subsequent ASU clarifications and improvements that are applicable to the Company, on January 1, 2019, using the modified retrospective transition method and used the effective date as the date of initial application. Consequently, financial information is not updated and the disclosures required under ASC 842 are not provided for dates and periods before January 1, 2019. ASC 842 provides a number of optional practical expedients in transition. The Company elected the “package of practical expedients,” which permits the Company not to reassess under ASC 842 its prior conclusions about lease identification, lease classification and initial direct costs. The Company also made a policy election not to separate non-lease components from lease components, therefore, it will account for lease component and the non-lease components as a single lease component. The Company determines if a contract contains a lease based on whether it has the right to obtain substantially all of the economic benefits from the use of an identified asset and whether it has the right to direct the use of an identified asset in exchange for consideration, which relates to an asset which the Company does not own. Right of use (“ROU”) assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. ROU assets are recognized as the lease liability, adjusted for lease incentives received. Lease liabilities are recognized at the present value of the future lease payments at the lease commencement date. The interest rate used to determine the present value of the future lease payments is the Company’s IBR, because the interest rate implicit in most of the Company’s leases is not readily determinable. The IBR is a hypothetical rate based on the Company’s understanding of what its credit rating would be to borrow and resulting interest the Company would pay to borrow an amount equal to the lease payments in a similar economic environment over the lease term on a collateralized basis. Lease payments may be fixed or variable, however, only fixed payments or in-substance fixed payments are included in the Company’s lease liability calculation. Variable lease payments are recognized in operating expenses in the period in which the obligation for those payments are incurred. The lease term of operating and finance leases vary from less than a year to 76 years . The Company has leases that include one or more options to extend the lease term for up to 14 years as well as options to terminate the lease within one year. The Company’s lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise such options. Operating leases are included in operating lease right to use assets, operating lease liabilities, current and operating lease liabilities, non-current on the Company’s condensed consolidated balance sheets . Finance leases are included in property and equipment, net, accrued and other current liabilities, and other long-term liabilities on the Company’s condensed consolidated balance sheets
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents as of June 30, 2019 consisted of cash held in checking and savings accounts as well as investments in money market funds and U.S. government securities. The Company considers all highly-liquid investments purchased with an original or remaining maturity of three months or less at the date of purchase to be cash equivalents. Cash includes amounts collected on behalf of, but not yet remitted to Partners, which are included in accrued and other current liabilities on the consolidated balance sheets.
Recent Accounting Pronouncements	Recently Adopted Accounting Pronouncements In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842),” which requires lessees to recognize leases on-balance sheet and disclose key information about leasing arrangements. Upon adoption of the new leasing standard on January 1, 2019, the Company recognized ROU assets of $888 million and lease liabilities of $963 million . The Company reassessed the build-to-suit leases that no longer meet the control-based build-to-suit model and derecognized $392 million in build-to-suit assets, $350 million corresponding financing obligation, and recorded $9 million of deferred tax liability. The initial cash contribution to the Mission Bay 3 & 4 joint venture that was previously reported as a defeasance of a build-to-suit financing obligation of $60 million was derecognized by reclassifying it as an increase to the Mission Bay 3 & 4 equity method investment. The $9 million difference between the total derecognized assets and total derecognized liabilities was recorded in the opening balance of accumulated deficit, net of tax, as of January 1, 2019. In July 2017, the FASB issued ASU 2017-11, “Earnings Per Share (Topic 260); Distinguishing Liabilities from Equity (Topic 480); Derivatives and Hedging (Topic 815): (Part I) Accounting for Certain Financial Instruments with Down Round Features, (Part II) Replacement of the Indefinite Deferral for Mandatorily Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatorily Redeemable Noncontrolling Interests with a Scope Exception” to simplify the accounting for certain instruments with down round features. The amendments require companies to disregard the down round feature when assessing whether the instrument is indexed to its own stock, for purposes of determining liability or equity classification. Further, companies that provide earnings per share (“EPS”) data will adjust the basic EPS calculation for the effect of the feature when triggered and will also recognize the effect of the trigger within equity. The Company adopted this new standard as of January 1, 2019 and applied the changes retrospectively. The adoption of the new standard did not have a material impact on the Company’s condensed consolidated financial statements. In June 2018, the FASB issued ASU 2018-07, “Improvements to Non-Employee Share-Based Payment Accounting,” which expands the scope of Topic 718, to include share-based payments issued to non-employees for goods or services. The new standard supersedes Subtopic 505-50. The Company adopted the new standard effective January 1, 2019 on a modified retrospective basis. The new standard did not have a material impact on the Company’s condensed consolidated financial statements. Recently Issued Accounting Pronouncements Not Yet Adopted In June 2016, the FASB issued ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” to require the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. The standard also amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. The standard is effective for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. The Company is currently evaluating the impact of this accounting standard update on its consolidated financial statements. In August 2018, the FASB issued ASU 2018-13, “Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement,” which modifies the disclosure requirements in ASC 820, “Fair Value Measurement” (“ASC 820”). The new standard is effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted. An entity is permitted to early adopt any removed or modified disclosures upon issuance of this ASU and delay adoption of the additional disclosures until their effective date. The Company is currently evaluating the impact of this accounting standard update on its consolidated financial statements. In August 2018, the FASB issued ASU 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,” which aligns the requirements for capitalizing implementation costs incurred in a cloud computing arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use-software. The standard is effective for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted. The Company is currently evaluating the impact of this accounting standard update on its consolidated financial statements. In October 2018, the FASB issued ASU 2018-17, “Consolidation (Topic 810): Targeted Improvements to Related Party Guidance for Variable Interest Entities,” which amends the guidance for determining whether a decision-making fee is a variable interest and requires organizations to consider indirect interests held through related parties under common control on a proportional basis rather than as the equivalent of a direct interest in its entirety. The standard is effective for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted. The Company is currently evaluating the impact of this accounting standard update on its consolidated financial statements.
Non-Controlling Interest	Non-controlling interest is classified in mezzanine equity as it is redeemable on an event that is not solely in the control of the Company. The non-controlling interest is redeemable at fair value beginning at future dates at the holders’ option and prior to the occurrence of certain events. The non-controlling interest is not remeasured to fair value because it is currently not probable that the non-controlling interest will become redeemable because of the likelihood of occurrence of certain events that would prevent it from becoming redeemable. If the non-controlling interest becomes probable of being redeemable, the Company will remeasure the non-controlling interest with changes in the carrying value recognized in additional paid-in capital.

Revenue (Tables)

Revenue (Tables)	6 Months Ended
	Jun. 30, 2019
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregation of Revenue	Revenue is presented in the following tables for the three and six months ended June 30, 2018 and 2019 , respectively ( in millions ): Three Months Ended June 30, Six Months Ended June 30, 2018 2019 2018 2019 Ridesharing revenue $ 2,291 $ 2,348 $ 4,471 $ 4,724 Uber Eats revenue 346 595 629 1,131 Vehicle Solutions revenue (1) 34 3 89 13 Other revenue 26 25 52 57 Total Core Platform revenue 2,697 2,971 5,241 5,925 Total Other Bets revenue 71 195 111 340 Total revenue $ 2,768 $ 3,166 $ 5,352 $ 6,265 Three Months Ended June 30, Six Months Ended June 30, 2018 2019 2018 2019 United States and Canada $ 1,493 $ 1,776 $ 2,880 $ 3,526 Latin America ("LATAM") 547 417 1,065 867 Europe, Middle East and Africa ("EMEA") 413 502 801 989 Asia Pacific ("APAC") 244 276 495 543 Total Core Platform revenue $ 2,697 $ 2,971 $ 5,241 $ 5,925 (1) The Company accounts for Vehicle Solutions revenue as an operating lease as defined under ASC 840 for 2018 and ASC 842 in 2019.
Schedule of Remaining Performance Obligation	The Company’s remaining performance obligation is expected to be recognized as follows ( in millions ) : Less Than or Greater Than Total As of June 30, 2019 $ 52 $ 61 $ 113

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	6 Months Ended
	Jun. 30, 2019
Fair Value Disclosures [Abstract]
Marketable and Non-Marketable Securities	The Company’s investments on the condensed consolidated balance sheets consisted of the following as of December 31, 2018 and June 30, 2019 (in millions) : As of December 31, 2018 June 30, 2019 Non-marketable equity securities: Didi $ 7,953 $ 7,953 Other 32 94 Debt securities: Grab (1) 2,328 2,334 Other (2) 42 34 Investments $ 10,355 $ 10,415 (1) Recorded at fair value with changes in fair value recorded in other comprehensive income (loss), net of tax. (2) Recorded at fair value with changes in fair value recorded in earnings due to the election of the fair value option of accounting for financial instruments.
Schedule of Assets and Liabilities Measured on Recurring Basis	The following table presents the Company’s financial assets and liabilities measured at fair value on a recurring basis based on the three-tier fair value hierarchy (in millions) : As of December 31, 2018 As of June 30, 2019 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Financial Assets Cash and cash equivalents: Money market funds $ 268 $ — $ — $ 268 $ 6,000 $ — $ — $ 6,000 U.S. government securities — — — — — 1,049 — 1,049 Restricted cash and cash equivalents: Money market funds 1,237 — — 1,237 1,497 — — 1,497 Investments: Debt securities — — 2,370 2,370 — — 2,368 2,368 Total financial assets $ 1,505 $ — $ 2,370 $ 3,875 $ 7,497 $ 1,049 $ 2,368 $ 10,914 Financial Liabilities Accrued and other current liabilities: Other $ — $ — $ 9 $ 9 $ — $ — $ 3 $ 3 Other long-term liabilities: Warrants — — 52 52 — — — — Embedded derivatives — — 2,018 2,018 — — — — Total financial liabilities $ — $ — $ 2,079 $ 2,079 $ — $ — $ 3 $ 3
Schedule of Financial Assets Measured at Fair Value on a Recurring Basis	The following table summarizes the amortized cost, unrealized gains and losses, and fair value of the Company’s financial assets measured at fair value on a recurring basis as of December 31, 2018 and June 30, 2019 (in millions) : As of December 31, 2018 As of June 30, 2019 Amortized Cost Unrealized Gains Unrealized Losses Fair Value Amortized Cost Unrealized Gains Unrealized Losses Fair Value Cash and cash equivalents: U.S. government securities $ — $ — $ — $ — $ 1,049 $ — $ — $ 1,049 Investments: Debt securities 2,305 65 — 2,370 2,307 61 — 2,368 Total $ 2,305 $ 65 $ — $ 2,370 $ 3,356 $ 61 $ — $ 3,417
Schedule of Fair Value Assumptions on Significant Unobservable Inputs	The following table summarizes information about the significant unobservable inputs used in the fair value measurement for the Company’s investment in Grab as of December 31, 2018 and June 30, 2019 : Fair value method Relative weighting Key unobservable input Financing transactions 100% Transaction price per share $6.16
Schedule of Amortized Cost and Fair Value of Debt Security with Contractual Maturity Dates	The following table summarizes the amortized cost and fair value of the Company’s debt securities with a stated contractual maturity or redemption date as of December 31, 2018 and June 30, 2019 (in millions) : As of December 31, 2018 As of June 30, 2019 Amortized Cost Fair Value Amortized Cost Fair Value Within one year $ — $ — $ 1,049 $ 1,049 One year through five years 2,275 2,328 2,277 2,334 Total $ 2,275 $ 2,328 $ 3,326 $ 3,383
Schedule of Reconciliation Using Significant Unobservable Inputs, Assets	The following table presents a reconciliation of the Company’s financial assets measured and recorded at fair value on a recurring basis as of June 30, 2019 , using significant unobservable inputs (Level 3) (in millions) : Debt Securities Balance as of December 31, 2018 $ 2,370 Total net gains (losses) Included in earnings (8 ) Included in other comprehensive income (loss) 4 Purchases 2 Sales — Settlements — Balance as of June 30, 2019 $ 2,368
Schedule of Reconciliation Using Significant Unobservable Inputs, Liabilities	The following table presents a reconciliation of the Company’s financial liabilities measured at fair value as of June 30, 2019 using significant unobservable inputs (Level 3), and the change in fair value recorded in other income (expense), net in the condensed consolidated statements of operations (in millions) : Warrants Convertible Debt Embedded Derivative Balance as of December 31, 2018 $ 52 $ 2,018 Vesting of share warrants 1 — Exercise of vested share warrants (53 ) — Change in fair value — (58 ) Settlement of derivative liability — (1,960 ) Balance as of June 30, 2019 $ — $ —
Schedule of Securities without Readily Determinable Fair Value	The following is a summary of unrealized gains and losses from remeasurement (referred to as upward or downward adjustments) recorded in other income (expense), net in the condensed consolidated statements of operations , and included as adjustments to the carrying value of non-marketable equity securities held during the three and six months ended June 30, 2018 and 2019 based on the selling price of newly issued shares of similar preferred stock to new investors using the common stock equivalent valuation method and adjusted for any applicable differences in conversion rights (in millions) : Three Months Ended June 30, Six Months Ended June 30, 2018 2019 2018 2019 Upward adjustments $ — $ 4 $ 1,984 $ 22 Downward adjustments (including impairment) — — — — Total unrealized gain for non-marketable equity securities $ — $ 4 $ 1,984 $ 22 The following table summarizes the total carrying value of the Company’s non-marketable equity securities held as of December 31, 2018 and June 30, 2019 including cumulative unrealized upward and downward adjustments made to the initial cost basis of the securities (in millions) : As of December 31, 2018 June 30, 2019 Initial cost basis $ 6,001 $ 6,041 Upward adjustments 1,984 2,006 Downward adjustments (including impairment) — — Total carrying value at the end of the period $ 7,985 $ 8,047

Equity Method Investments (Tabl

Equity Method Investments (Tables)	6 Months Ended
	Jun. 30, 2019
Equity Method Investments and Joint Ventures [Abstract]
Schedule of Equity Method Investments	The carrying value of the Company’s equity method investments as of December 31, 2018 and June 30, 2019 is as follows (in millions) : As of December 31, 2018 June 30, 2019 MLU B.V. $ 1,234 $ 1,232 Mission Bay 3 & 4 (1) 78 138 Equity method investments $ 1,312 $ 1,370 (1) Refer to Note 15 - Variable Interest Entities ("VIEs") for further information on the Company’s interest in Mission Bay 3 & 4.

Property and Equipment, Net (Ta

Property and Equipment, Net (Tables)	6 Months Ended
	Jun. 30, 2019
Property, Plant and Equipment [Abstract]
Components of Property and Equipment, Net	The components of property and equipment, net as of December 31, 2018 and June 30, 2019 were as follows (in millions) : As of December 31, 2018 June 30, 2019 Land $ 67 $ 67 Building and site improvements 93 40 Leasehold improvements 315 345 Computer equipment 858 893 Leased computer equipment 288 438 Leased vehicles 34 31 Internal-use software 51 73 Furniture and fixtures 39 39 Dockless e-bikes 10 58 Construction in progress 832 661 Total 2,587 2,645 Less: Accumulated depreciation and amortization (946 ) (1,198 ) Property and equipment, net $ 1,641 $ 1,447

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Components of lease expense	The components of lease expense were as follows (in millions) : Three Months Ended June 30, 2019 Six Months Ended June 30, 2019 Lease cost Finance lease cost: Amortization of assets $ 35 $ 71 Interest of lease liabilities 4 8 Operating lease cost 79 146 Short-term lease cost 10 18 Variable lease cost 29 54 Sublease income — (1 ) Total lease cost $ 157 $ 296 Supplemental cash flow information related to leases was as follows (in millions) : Six Months Ended June 30, 2019 Other information Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from financing leases $ 6 Operating cash flows from operating leases 107 Financing cash flows from financing leases 72 Right-of-use assets obtained in exchange for lease obligations: Operating lease liabilities $ 547 Finance lease liabilities 150
Leases, Assets and Liabilities	Supplemental balance sheet information related to leases was as follows (in millions, except lease term and discount rate): As of June 30, 2019 Operating Leases Operating lease right-of-use assets $ 1,337 Operating lease liability, current 180 Operating lease liabilities, non-current 1,274 Total operating lease liabilities $ 1,454 As of June 30, 2019 Finance Leases Property and equipment, at cost $ 438 Accumulated depreciation (168 ) Property and equipment, net $ 270 Other current liabilities $ 133 Other long-term liabilities 149 Total finance leases liabilities $ 282 As of June 30, 2019 Weighted-average remaining lease term Operating leases 17 years Finance leases 2 years Weighted-average discount rate Operating leases 7.2 % Finance leases 5.0 %
Maturity of Lease Liabilities, Operating	Maturities of lease liabilities were as follows (in millions) : As of June 30, 2019 Operating Leases Finance Leases Remainder of 2019 $ 133 $ 85 2020 221 115 2021 255 86 2022 213 11 2023 180 — Thereafter 1,989 — Total undiscounted lease payments 2,991 297 Less: imputed interest (1,537 ) (15 ) Total lease liabilities $ 1,454 $ 282
Maturity of Lease Liabilities, Finance	Maturities of lease liabilities were as follows (in millions) : As of June 30, 2019 Operating Leases Finance Leases Remainder of 2019 $ 133 $ 85 2020 221 115 2021 255 86 2022 213 11 2023 180 — Thereafter 1,989 — Total undiscounted lease payments 2,991 297 Less: imputed interest (1,537 ) (15 ) Total lease liabilities $ 1,454 $ 282
Future Minimum Payments Related to Financing Obligations under Failed Sale-Leaseback Arrangement	Future minimum payments related to the financing obligations under failed sale-leaseback arrangement as of June 30, 2019 are summarized below (in millions) : Future Minimum Payments under Failed Sale-Leaseback Arrangements Fiscal Year Ending December 31, Remainder of 2019 $ 3 2020 6 2021 6 2022 6 2023 6 Thereafter 833 Total $ 860

Long-Term Debt and Revolving _2

Long-Term Debt and Revolving Credit Arrangements (Tables)	6 Months Ended
	Jun. 30, 2019
Debt Disclosure [Abstract]
Schedule of Components of Debt	Components of debt, including the associated effective interest rates were as follows ( in millions , except for percentages): As of December 31, 2018 June 30, 2019 Effective Interest Rate 2016 Senior Secured Term Loan $ 1,124 $ 1,118 6.1 % 2018 Senior Secured Term Loan 1,493 1,485 6.2 % 2021 Convertible Notes 1,844 — 23.5 % 2022 Convertible Notes 1,030 — 13.7 % 2023 Senior Note 500 500 7.7 % 2026 Senior Note 1,500 1,500 8.1 % Total debt 7,491 4,603 Less: unamortized discount and issuance costs (595 ) (50 ) Less: current portion of long-term debt (27 ) (27 ) Total long-term debt $ 6,869 $ 4,526
Schedule of Debt Expense	The following table presents the amount of interest expense recognized relating to the contractual interest coupon, amortization of the debt discount and issuance costs, and the IRR payout with respect to the Senior Secured Term Loan, the Convertible Notes, and the Senior Notes for the three and six months ended June 30, 2018 and 2019 (in millions) : Three Months Ended June 30, Six Months Ended June 30, 2018 2019 2018 2019 Contractual interest coupon $ 57 $ 115 $ 89 $ 255 Amortization of debt discount and issuance costs 77 25 149 78 8% IRR payout 15 9 29 26 Total interest expense from long-term debt $ 149 $ 149 $ 267 $ 359

Assets and Liabilities Held f_2

Assets and Liabilities Held for Sale (Tables)	6 Months Ended
	Jun. 30, 2019
Discontinued Operations and Disposal Groups [Abstract]
Summary of Carrying Value of Assets and Liabilities Classified as Held-for-sale	The following table summarizes the carrying values of the assets and liabilities classified as held for sale as of December 31, 2018 (in millions) : As of December 31, 2018 Assets held for sale Cash and cash equivalents $ 34 Accounts receivable, net 20 Prepaid expenses and other current assets 30 Property and equipment, net 322 Total assets held for sale 406 Liabilities held for sale Accounts payable 2 Accrued liabilities 2 Other current liabilities 7 Total liabilities held for sale 11 Net assets held for sale $ 395

Supplemental Financial Statem_2

Supplemental Financial Statement Information (Tables)	6 Months Ended
	Jun. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Prepaid Expenses and Other Current Assets	Prepaid expenses and other current assets as of December 31, 2018 and June 30, 2019 were as follows (in millions) : As of December 31, 2018 June 30, 2019 Prepaid expenses $ 265 $ 289 Other receivables 416 584 Other 179 256 Prepaid expenses and other current assets $ 860 $ 1,129
Schedule of Accrued and Other Current Liabilities	Accrued and other current liabilities as of December 31, 2018 and June 30, 2019 were as follows (in millions) : As of December 31, 2018 June 30, 2019 Accrued legal, regulatory and non-income taxes $ 1,134 $ 1,598 Accrued Partner liability 459 748 Accrued professional and contractor services 298 383 Accrued compensation and employee benefits 261 282 Accrued marketing expenses 152 146 Other accrued expenses 160 276 Income and other tax liabilities 157 192 Government and airport fees payable 104 129 Short-term finance lease obligation for computer equipment 110 133 Other 322 359 Accrued and other current liabilities $ 3,157 $ 4,246
Other Long-Term Liabilities	Other long-term liabilities as of December 31, 2018 and June 30, 2019 were as follows (in millions) : As of December 31, 2018 June 30, 2019 Convertible debt embedded derivatives (Note 7) $ 2,018 $ — Deferred tax liabilities 1,072 1,065 Financing obligation 436 80 Income tax payable 80 65 Other 466 275 Other long-term liabilities $ 4,072 $ 1,485
Schedule of Accumulated Other Comprehensive Income (Loss)	The changes in composition of accumulated other comprehensive income (loss), net of tax, for the six months ended June 30, 2018 and 2019 were as follows (in millions) : Foreign Currency Translation Adjustments Unrealized Gains (Losses) on Available-for-Sale Securities, Net of Tax Total Balance as of December 31, 2017 $ (3 ) $ — $ (3 ) Other comprehensive income (loss) before reclassifications (65 ) 39 (26 ) Amounts reclassified from accumulated other comprehensive income (loss) — — — Other comprehensive income (loss) (65 ) 39 (26 ) Balance as of June 30, 2018 $ (68 ) $ 39 $ (29 ) Foreign Currency Translation Adjustments Unrealized Gains (Losses) on Available-for-Sale Securities, Net of Tax Total Balance as of December 31, 2018 $ (228 ) $ 40 $ (188 ) Other comprehensive income (loss) before reclassifications 17 4 21 Amounts reclassified from accumulated other comprehensive income (loss) — — — Other comprehensive income (loss) 17 4 21 Balance as of June 30, 2019 $ (211 ) $ 44 $ (167 )
Other Income (Expense), Net	The components of other income (expense), net, for the three and six months ended June 30, 2018 and 2019 were as follows (in millions): Three Months Ended June 30, Six Months Ended June 30, 2018 2019 2018 2019 Interest income $ 24 $ 64 $ 42 $ 108 Foreign currency exchange gains (losses), net (37 ) (7 ) (24 ) (8 ) Gain on business divestitures (1) 40 — 3,201 — Gain (loss) on debt and equity securities, net (2) — (2 ) 1,984 14 Change in fair value of embedded derivatives (35 ) (117 ) (402 ) 58 Gain on extinguishment of convertible notes and settlement of derivative — 444 — 444 Other 71 16 199 42 Other income (expense), net $ 63 $ 398 $ 5,000 $ 658 (1) During the six months ended June 30, 2018 , gain on business divestitures primarily includes a $2.2 billion gain on the sale of the Company’s Southeast Asia operations to Grab Holding Inc. (“Grab”) and a $954 million gain on the disposal of the Company’s Uber Russia/CIS operations recognized in the first quarter of 2018 . On March 25, 2018, two wholly-owned subsidiaries of the Company signed and completed an agreement with Grab pursuant to which Grab hired employees and acquired certain assets of the Company in the region, including Rider, Driver Partners, and Eater contracts in Southeast Asia. The net assets contributed by the Company were not material. In exchange, the Company received shares of Grab Series G preferred stock which was recorded at fair value as additional sale consideration. Refer to Note 4 - Equity Method Investments for more information on the disposal of the Company's Uber Russia/CIS operations. (2) During the six months ended June 30, 2018 , gain on debt and equity securities, net represents a $2.0 billion unrealized gain on the Company’s non-marketable equity securities related to Didi recognized in the first quarter of 2018 . Refer to Note 3 - Fair Value Measurement for further information.

Redeemable Convertible Prefer_2

Redeemable Convertible Preferred Stock, Common Stock, and Stockholders' Equity (Deficit) (Tables)	6 Months Ended
	Jun. 30, 2019
Equity [Abstract]
Summary of Activity in Restricted Common Stock	The following table summarizes the activity related to the Company’s restricted common stock for the six months ended June 30, 2019 (in thousands, except per share amounts): Number of Shares Weighted-average Grant-Date Fair Value per Share Unvested restricted common stock as of December 31, 2018 898 $ 30.33 Granted — $ — Vested (353 ) $ 34.82 Canceled (37 ) $ 34.86 Unvested restricted common stock as of June 30, 2019 508 $ 26.88
Summary of Stock Options and SAR Activity	A summary of stock option and SAR activity for the six months ended June 30, 2019 is as follows (in millions, except share amounts which are reflected in thousands, per share amounts, and years): SARs Outstanding Number of SARs Options Outstanding Number of Shares Weighted-Average Exercise Price Per Share Weighted-Average Remaining Contractual Life (in years) Aggregate Intrinsic Value As of December 31, 2018 758 42,936 $ 9.22 5.74 $ 1,456 Awards granted 73 250 $ 43.06 Awards exercised — (1,178 ) $ 2.39 Awards forfeited (11 ) (70 ) $ 32.71 As of June 30, 2019 820 41,938 $ 9.61 5.25 $ 1,572 Vested and expected to vest as of June 30, 2019 632 34,972 $ 4.34 4.87 $ 1,497 Exercisable as of June 30, 2019 632 34,972 $ 4.34 4.87 $ 1,497
Schedule of Restricted Stock Units Activity	The following table summarizes the activity related to the Company’s RSUs for the six months ended June 30, 2019 . For purposes of this table, vested RSUs represent the shares for which the service condition had been fulfilled during six months ended June 30, 2019 (in thousands, except per share amounts): Number of Shares Weighted-Average Unvested and outstanding as of December 31, 2018 75,835 $ 37.20 Granted 39,824 $ 44.32 Vested (17,655 ) $ 36.35 Canceled (5,420 ) $ 39.86 Unvested and outstanding as of June 30, 2019 92,584 $ 42.70
Schedule of Stock-Based Compensation Expense by Function	The following table summarizes total stock-based compensation expense by function for the three and six months ended June 30, 2018 and 2019 (in millions) : Three Months Ended June 30, Six Months Ended June 30, 2018 2019 2018 2019 Operations and support $ 2 $ 404 $ 7 $ 405 Sales and marketing 1 212 4 213 Research and development 5 2,557 11 2,560 General and administrative 12 768 61 774 Total $ 20 $ 3,941 $ 83 $ 3,952

Net Income (Loss) Per Share (Ta

Net Income (Loss) Per Share (Tables)	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Schedule of Basic and Diluted Net Income (Loss) Per Share	The following table sets forth the computation of basic and diluted net income (loss) per share attributable to common stockholders (in millions, except share amounts which are reflected in thousands, and per share amounts): Three Months Ended June 30, Six Months Ended June 30, 2018 2019 2018 2019 Basic net income (loss) per share: Numerator Net income (loss) $ (878 ) $ (5,246 ) $ 2,870 $ (6,262 ) Less: net loss attributable to redeemable non-controlling interest, net of tax — 10 — 14 Less: noncumulative dividends to preferred stockholders — — (1,086 ) — Less: undistributed earnings to participating securities — — (1,200 ) — Net income (loss) attributable to common stockholders $ (878 ) $ (5,236 ) $ 584 $ (6,248 ) Denominator Basic weighted-average common stock outstanding 440,958 1,110,704 439,022 783,900 Basic net income (loss) per share attributable to common stockholders $ (1.99 ) $ (4.72 ) $ 1.33 $ (7.97 ) Diluted net income (loss) per share: Numerator Net income (loss) attributable to common stockholders $ (878 ) $ (5,236 ) $ 584 $ (6,248 ) Add: Change in fair value of MLU B.V. put/call feature (10 ) — (10 ) (6 ) Add: noncumulative dividends to preferred stockholders — — — — Diluted net income (loss) attributable to common stockholders $ (888 ) $ (5,236 ) $ 574 $ (6,254 ) Denominator Number of shares used in basic net income (loss) per share computation 440,958 1,110,704 439,022 783,900 Weighted-average effect of potentially dilutive securities: Common stock subject to a put/call feature 450 — 551 82 Stock options — — 35,147 — RSUs to settle fixed monetary awards — — 1,486 — Other — — 188 — Diluted weighted-average common stock outstanding 441,408 1,110,704 476,394 783,982 Diluted net income (loss) per share attributable to common stockholders $ (2.01 ) $ (4.72 ) $ 1.20 $ (7.98 )
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	The following potentially dilutive outstanding securities as of June 30, 2018 and 2019 were excluded from the computation of diluted net income (loss) per share because their effect would have been anti-dilutive for the periods presented, or issuance of such shares is contingent upon the satisfaction of certain conditions which were not satisfied by the end of the period (in thousands) : As of June 30, 2018 2019 Redeemable convertible preferred stock 893,301 — Convertible notes 198,484 — Stock options 8,045 41,937 Restricted common stock with performance condition 1,022 — Common stock subject to repurchase 9,408 1,351 Warrants to purchase redeemable convertible preferred stock 1,126 — SARs 787 — RSUs to settle fixed monetary awards 585 838 RSUs 118,256 92,838 Warrants to purchase common stock 178 187 Total 1,231,192 137,151

Segment Information and Geogr_2

Segment Information and Geographic Information (Tables)	6 Months Ended
	Jun. 30, 2019
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	The following table provides information about the Company’s segments and a reconciliation of the total segment contribution profit (loss) to loss from operations (in millions): Three Months Ended June 30, Six Months Ended June 30, 2018 2019 2018 2019 Contribution profit (loss): Core Platform $ 369 $ 220 $ 796 $ 103 Other Bets (28 ) (122 ) (48 ) (193 ) Total segment contribution profit (loss) 341 98 748 (90 ) Reconciling items: Research and development expenses related to ATG and Other Technology Programs (1) (129 ) (105 ) (246 ) (202 ) Unallocated research and development and general and administrative expenses (1), (2) (488 ) (649 ) (956 ) (1,233 ) Depreciation and amortization (98 ) (123 ) (186 ) (269 ) Stock-based compensation expense (20 ) (3,941 ) (83 ) (3,952 ) Legal, tax, and regulatory reserves and settlements (252 ) (380 ) (252 ) (380 ) Driver appreciation award — (299 ) — (299 ) Payroll tax on IPO stock-based compensation — (86 ) — (86 ) Asset impairment/loss on sale of assets (81 ) — (113 ) (8 ) Acquisition and financing related expenses — — (15 ) — Gain on restructuring of lease arrangement 4 — 4 — Impact of 2018 Divested Operations (1), (3) (16 ) — (118 ) — Loss from operations $ (739 ) $ (5,485 ) $ (1,217 ) $ (6,519 ) (1) Excluding stock-based compensation expense. (2) Unallocated research and development expenses include costs that are not directly attributable to the Core Platform and Other Bets segments. These include mapping and payment technologies and support and development of the internal technology infrastructure. Unallocated general and administrative expenses include certain shared costs such as finance, accounting, tax, human resources, information technology and legal costs. The Company’s allocation methodology is periodically evaluated and may change. (3) Defined as the Company’s 2018 operations in (i) Southeast Asia prior to the sale of those operations to Grab and (ii) Russia/CIS prior to the formation of the Company’s Yandex.Taxi joint venture.
Schedule of Revenue from Geographic Area	The following table sets forth revenue by geographic area for the three and six months ended June 30, 2018 and 2019 (in millions) : Three Months Ended June 30, Six Months Ended June 30, 2018 2019 2018 2019 United States $ 1,469 $ 1,853 $ 2,799 $ 3,610 Brazil 281 188 557 397 All other countries 1,018 1,125 1,996 2,258 Total revenue $ 2,768 $ 3,166 $ 5,352 $ 6,265

Variable Interest Entities (V_2

Variable Interest Entities (VIEs) (Tables)	6 Months Ended
	Jun. 30, 2019
Variable Interest Entity [Abstract]
Schedule of Variable Interest Entities	As of December 31, 2018 and June 30, 2019 , the carrying amount of assets and liabilities recognized on the condensed consolidated balance sheets related to the Company’s interests in unconsolidated VIEs and the Company’s maximum exposure to loss relating to unconsolidated VIEs was as follows (in millions) : As of December 31, 2018 June 30, 2019 Investment $ 78 $ 136 Additional cash contribution 58 — Limited guarantee 50 50 Maximum exposure to loss $ 186 $ 186

Basis of Presentation and Sum_3

Basis of Presentation and Summary of Significant Accounting Policies (Details) $ / shares in Units, shares in Millions, $ in Millions	May 14, 2019USD ($)$ / sharesshares	Mar. 26, 2019USD ($)	Apr. 30, 2019USD ($)	Jun. 30, 2019USD ($)renewal_option	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)renewal_optionsegment	Jun. 30, 2018USD ($)	May 16, 2019$ / shares	Jan. 01, 2019USD ($)	Dec. 31, 2018USD ($)
Subsidiary, Sale of Stock [Line Items]
Number of operating segments | segment						2
Number of reportable segments | segment						2
Gain on conversion of convertible notes				$ 327
Gain on extinguishment of convertible notes and settlement of derivative				444	$ 0	$ 444	$ 0
Embedded derivative liability income (expense)				(117)	(35)	58	(402)
Share-based compensation expense				3,941	$ 20	$ 3,952	$ 83
Additional deferred tax asset due to stock-based compensation expense				$ 1,100
Semi-annual installments			$ 300
Number of renewal options | renewal_option				1		1
Lease renewal term				14 years		14 years
Termination option period						1 year
ROU assets generated from leased assets outside of the U.S. (Less than)				15.00%		15.00%
Operating lease right-of-use assets				$ 1,337		$ 1,337
Operating lease, liability				1,454		1,454
Built-to-suit assets, derecognized amounts				(1,447)		(1,447)				$ (1,641)
Built-to-suit assets, derecognized financing obligation reclassified				1,370		1,370				1,312
Accumulated deficit				14,104		$ 14,104				$ 7,865
ASU 2016-02
Subsidiary, Sale of Stock [Line Items]
Operating lease right-of-use assets									$ 888
Operating lease, liability									963
Built-to-suit assets, derecognized amounts									392
Built to suit assets, financing obligation									350
Deferred tax liability, derecognized built-to-suit assets									9
Built-to-suit assets, derecognized financing obligation reclassified									60
Accumulated deficit									$ 9
Maximum
Subsidiary, Sale of Stock [Line Items]
Operating and finance leases, term of contract						76 years
Careem Inc.
Subsidiary, Sale of Stock [Line Items]
Asset acquisition, consideration transferred		$ 3,100
Asset acquisition, consideration transferred, debt instruments		1,700
Asset acquisition, consideration transferred, cash		$ 1,400
ATG Investment
Subsidiary, Sale of Stock [Line Items]
Investment purchase agreement, aggregate investment amount			$ 1,000
Preferred investment, dividend rate			4.50%
ATG Investment | SoftBank Vision Fund, Toyota Motor Coporation, And DENSCO Corporation
Subsidiary, Sale of Stock [Line Items]
Diluted ownership percentage			14.00%
ATG Investment | Uber Technologies, Inc.
Subsidiary, Sale of Stock [Line Items]
Diluted ownership percentage			86.00%
IPO
Subsidiary, Sale of Stock [Line Items]
Stock issued during period (in shares) | shares	180
Stock price (in dollars per share) | $ / shares	$ 45							$ 45
Proceeds from issuance of common stock	$ 8,000
Conversion of shares (in shares) | shares	905
Exercise of common stock warrants (in shares) | shares	0.2
Share-based compensation expense				$ 3,600
Shares withheld to meet tax withholding requirements (in shares) | shares	29
Shares withheld to meet tax withholding requirement, value	$ 1,300
IPO | Common Stock
Subsidiary, Sale of Stock [Line Items]
Stock issued during period (in shares) | shares	76
IPO | Holders of 2021 Convertible Notes and 2022 Convertible Notes
Subsidiary, Sale of Stock [Line Items]
Conversion of Convertible Notes to common stock in connection with initial public offering (in shares) | shares	94
Underwriters' discounts and commissions
Subsidiary, Sale of Stock [Line Items]
Payments of stock issuance costs	$ 106

Revenue - Summary (Details)

Revenue - Summary (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Revenue	$ 3,166	$ 2,768	$ 6,265	$ 5,352
Core Platform revenue
Disaggregation of Revenue [Line Items]
Revenue	2,971	2,697	5,925	5,241
Core Platform revenue | United States and Canada
Disaggregation of Revenue [Line Items]
Revenue	1,776	1,493	3,526	2,880
Core Platform revenue | Latin America (LATAM)
Disaggregation of Revenue [Line Items]
Revenue	417	547	867	1,065
Core Platform revenue | Europe, Middle East and Africa (EMEA)
Disaggregation of Revenue [Line Items]
Revenue	502	413	989	801
Core Platform revenue | Asia Pacific (APAC)
Disaggregation of Revenue [Line Items]
Revenue	276	244	543	495
Ridesharing revenue
Disaggregation of Revenue [Line Items]
Revenue excluding vehicle solutions revenue	2,348	2,291	4,724	4,471
Uber Eats revenue
Disaggregation of Revenue [Line Items]
Revenue excluding vehicle solutions revenue	595	346	1,131	629
Vehicle Solutions revenue
Disaggregation of Revenue [Line Items]
Vehicle Solutions revenue, under ASC 840		34		89
Vehicle Solutions revenue, under ASC 842	3		13
Other revenue
Disaggregation of Revenue [Line Items]
Revenue excluding vehicle solutions revenue	25	26	57	52
Other Bets revenue
Disaggregation of Revenue [Line Items]
Revenue excluding vehicle solutions revenue	$ 195	$ 71	$ 340	$ 111

Revenue - Remaining Performance

Revenue - Remaining Performance Obligation (Details) $ in Millions	Jun. 30, 2019USD ($)
Revenue from Contract with Customer [Abstract]
Performance obligation, amount	$ 113
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-07-01
Revenue from Contract with Customer [Abstract]
Performance obligation, amount	$ 52
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-07-01
Revenue from Contract with Customer [Abstract]
Performance obligation, amount	$ 61
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance period

Fair Value Measurement - Invest

Fair Value Measurement - Investments (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Non-marketable equity securities:
Total carrying value at the end of the period	$ 8,047	$ 7,985
Debt Securities [Abstract]
Investments	10,415	10,355
Didi
Non-marketable equity securities:
Total carrying value at the end of the period	7,953	7,953
Other
Non-marketable equity securities:
Total carrying value at the end of the period	94	32
Grab
Debt Securities [Abstract]
Debt securities	2,334	2,328
Other
Debt Securities [Abstract]
Debt securities	$ 34	$ 42

Fair Value Measurement - Fair V

Fair Value Measurement - Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Other long-term liabilities:
Warrants		$ 45
Recurring
Investments:
Debt securities	$ 3,417	2,370
Total financial assets	10,914	3,875
Accrued and other current liabilities:
Other	3	9
Other long-term liabilities:
Warrants	0	52
Embedded derivatives	0	2,018
Total financial liabilities	3	2,079
Recurring | Money market funds
Financial Assets
Cash and cash equivalents	6,000	268
Restricted cash and cash equivalents	1,497	1,237
Recurring | U.S. government securities
Financial Assets
Cash and cash equivalents	1,049	0
Investments:
Debt securities	1,049	0
Recurring | Debt securities
Investments:
Debt securities	2,368	2,370
Recurring | Level 1
Investments:
Total financial assets	7,497	1,505
Accrued and other current liabilities:
Other	0	0
Other long-term liabilities:
Warrants	0	0
Embedded derivatives	0	0
Total financial liabilities	0	0
Recurring | Level 1 | Money market funds
Financial Assets
Cash and cash equivalents	6,000	268
Restricted cash and cash equivalents	1,497	1,237
Recurring | Level 1 | U.S. government securities
Financial Assets
Cash and cash equivalents	0	0
Recurring | Level 1 | Debt securities
Investments:
Debt securities	0	0
Recurring | Level 2
Investments:
Total financial assets	1,049	0
Accrued and other current liabilities:
Other	0	0
Other long-term liabilities:
Warrants	0	0
Embedded derivatives	0	0
Total financial liabilities	0	0
Recurring | Level 2 | Money market funds
Financial Assets
Cash and cash equivalents	0	0
Restricted cash and cash equivalents	0	0
Recurring | Level 2 | U.S. government securities
Financial Assets
Cash and cash equivalents	1,049	0
Recurring | Level 2 | Debt securities
Investments:
Debt securities	0	0
Recurring | Level 3
Investments:
Total financial assets	2,368	2,370
Accrued and other current liabilities:
Other	3	9
Other long-term liabilities:
Warrants	0	52
Embedded derivatives	0	2,018
Total financial liabilities	3	2,079
Recurring | Level 3 | Money market funds
Financial Assets
Cash and cash equivalents	0	0
Restricted cash and cash equivalents	0	0
Recurring | Level 3 | U.S. government securities
Financial Assets
Cash and cash equivalents	0	0
Recurring | Level 3 | Debt securities
Investments:
Debt securities	$ 2,368	$ 2,370

Fair Value Measurement - Summar

Fair Value Measurement - Summary of Amortized Cost, Unrealized Gains and Losses of Financial Assets (Details) - Recurring - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 3,356	$ 2,305
Unrealized Gains	61	65
Unrealized Losses	0	0
Fair Value	3,417	2,370
U.S. government securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,049	0
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	1,049	0
Debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,307	2,305
Unrealized Gains	61	65
Unrealized Losses	0	0
Fair Value	$ 2,368	$ 2,370

Fair Value Measurement - Summ_2

Fair Value Measurement - Summary of Unobservable Inputs (Details)	Jun. 30, 2019$ / shares	Dec. 31, 2018$ / shares
Relative weighting
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Financing transactions, measurement input	1	1
Transaction price per share
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Financing transactions, measurement input	6.16	6.16

Fair Value Measurement - Summ_3

Fair Value Measurement - Summary of Amortized Costs and Fair Value of Financial Assets (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Amortized Cost
Amortized Cost, Within one year	$ 1,049	$ 0
Amortized Cost, One year through five years	2,277	2,275
Amortized Cost	3,326	2,275
Fair Value
Fair Value, Within one year	1,049	0
Fair Value, One year through five years	2,334	2,328
Fair Value	$ 3,383	$ 2,328

Fair Value Measurement - Fair_2

Fair Value Measurement - Fair Value of Unobservable Inputs, Assets (Details) - Debt Securities $ in Millions	6 Months Ended
	Jun. 30, 2019USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance as of December 31, 2018	$ 2,370
Total net gains (losses)
Included in earnings	(8)
Included in other comprehensive income (loss)	4
Purchases	2
Sales	0
Settlements	0
Balance as of June 30, 2019	$ 2,368

Fair Value Measurement - Fair_3

Fair Value Measurement - Fair Value of Unobservable Inputs, Liabilities (Details) $ in Millions	6 Months Ended
	Jun. 30, 2019USD ($)
Warrants
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance as of December 31, 2018	$ 52
Vesting of share warrants	1
Exercise of vested share warrants	(53)
Change in fair value	0
Settlement of derivative liability	0
Balance as of June 30, 2019	0
Convertible Debt Embedded Derivative
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance as of December 31, 2018	2,018
Vesting of share warrants	0
Exercise of vested share warrants	0
Change in fair value	(58)
Settlement of derivative liability	(1,960)
Balance as of June 30, 2019	$ 0

Fair Value Measurement - Narrat

Fair Value Measurement - Narrative (Details) $ / shares in Units, $ in Millions	May 14, 2019shares	Feb. 29, 2016warrant$ / sharesshares	Mar. 31, 2019USD ($)	Mar. 31, 2018USD ($)	Jun. 30, 2019	Dec. 31, 2018USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of warrants issued | warrant		2
Exercise price of warrants (in dollars per share) | $ / shares		$ 0.01
Warrants | $						$ 45
Exercise of common stock warrants | $				$ 1
Redeemable Non-Controlling Interest | Redeemable Convertible Preferred Stock
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Exercise of common stock warrants | $			$ 45
Warrants Issued, Tranche One
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of securities called by warrants (in shares) | shares		205,034
Warrants Issued, Tranche Two
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of securities called by warrants (in shares) | shares		820,138
IPO | Holders of 2021 Convertible Notes and 2022 Convertible Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Conversion of Convertible Notes to common stock in connection with initial public offering (in shares) | shares	94,000,000
Qualified Input Public Offering Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Convertible debt embedded derivative, rate					1

Fair Value Measurement - Unreal

Fair Value Measurement - Unrealized Gain (Loss) on Non-Marketable Securities (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Upward adjustments	$ 4	$ 0	$ 22	$ 1,984
Downward adjustments (including impairment)	0	0	0	0
Total unrealized gain for non-marketable equity securities	$ 4	$ 0	$ 22	$ 1,984

Fair Value Measurement - Change

Fair Value Measurement - Change In Equity Securities (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Initial cost basis	$ 6,041	$ 6,001
Upward adjustments	2,006	1,984
Downward adjustments (including impairment)	0	0
Total carrying value at the end of the period	$ 8,047	$ 7,985

Equity Method Investments - Car

Equity Method Investments - Carrying Value (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018	Mar. 31, 2018
Schedule of Equity Method Investments [Line Items]
Equity method investments	$ 1,370	$ 1,312
MLU B.V.
Schedule of Equity Method Investments [Line Items]
Equity method investments	1,232	1,234	$ 1,400
Mission Bay 3 and 4
Schedule of Equity Method Investments [Line Items]
Equity method investments	$ 138	$ 78

Equity Method Investments - Nar

Equity Method Investments - Narrative (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Schedule of Equity Method Investments [Line Items]
Cash contributed for acquisition of equity method investments				$ 0	$ 423
Issuance of common stock as consideration for investment and acquisition		$ 93	$ 52
Recognized gain on assets/liabilities	$ 0	$ 40		0	$ 3,201
Equity method investments	1,370			1,370		$ 1,312
MLU B.V.
Schedule of Equity Method Investments [Line Items]
Cash contributed for acquisition of equity method investments			$ 345
Shares issued for consideration for equity method investments (in shares)			2
Issuance of common stock as consideration for investment and acquisition			$ 52
Shares issued for consideration for equity method investments, call feature repurchase price per share (in dollars per share)			$ 48
Equity ownership interest			38.00%
Contingent ownership percentage			35.00%
Recognized gain on assets/liabilities			$ 954
Equity method investments	1,232		1,400	1,232		$ 1,234
Basis difference in equity method investment	$ 792		$ 908	$ 792
Weighted-average life of intangible asset				5 years 3 months 18 days

Property and Equipment, Net (De

Property and Equipment, Net (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Total	$ 2,645		$ 2,645		$ 2,587
Less: Accumulated depreciation and amortization	(1,198)		(1,198)		(946)
Property and equipment, net	1,447		1,447		1,641
Depreciation	115	$ 92	252	$ 174
Land
Property, Plant and Equipment [Line Items]
Total	67		67		67
Building and site improvements
Property, Plant and Equipment [Line Items]
Total	40		40		93
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total	345		345		315
Computer equipment
Property, Plant and Equipment [Line Items]
Total	893		893		858
Leased computer equipment
Property, Plant and Equipment [Line Items]
Total	438		438		288
Leased vehicles
Property, Plant and Equipment [Line Items]
Total	31		31		34
Internal-use software
Property, Plant and Equipment [Line Items]
Total	73		73		51
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total	39		39		39
Dockless e-bikes
Property, Plant and Equipment [Line Items]
Total	58		58		10
Construction in progress
Property, Plant and Equipment [Line Items]
Total	$ 661		$ 661		$ 832

Leases - Lease Costs (Details)

Leases - Lease Costs (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Lease cost
Amortization of assets	$ 35	$ 71
Interest of lease liabilities	4	8
Operating lease cost	79	146
Short-term lease cost	10	18
Variable lease cost	29	54
Sublease income	0	(1)
Total lease cost	$ 157	$ 296

Leases - Supplemental Cash Flow

Leases - Supplemental Cash Flow Information (Details) $ in Millions	6 Months Ended
	Jun. 30, 2019USD ($)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from financing leases	$ 6
Operating cash flows from operating leases	107
Financing cash flows from financing leases	72
Right-of-use assets obtained in exchange for lease obligations:
Operating lease liabilities	547
Finance lease liabilities	$ 150

Leases - Supplemental Balance S

Leases - Supplemental Balance Sheet Information - Operating Leases (Details) $ in Millions	Jun. 30, 2019USD ($)
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	$ 1,337
Operating lease liability, current	180
Operating lease liabilities, non-current	1,274
Total operating lease liabilities	1,454
Operating Lease Excluding Finance Obligation
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	1,337
Operating lease liability, current	180
Operating lease liabilities, non-current	1,274
Total operating lease liabilities	$ 1,454

Leases - Supplemental Balance_2

Leases - Supplemental Balance Sheet Information - Finance Leases (Details) $ in Millions	Jun. 30, 2019USD ($)
Lessee, Lease, Description [Line Items]
Other current liabilities	$ 133
Finance Lease Excluding Finance Obligation
Lessee, Lease, Description [Line Items]
Property and equipment, at cost	438
Accumulated depreciation	(168)
Property and equipment, net	270
Other current liabilities	133
Other long-term liabilities	149
Total finance leases liabilities	$ 282

Leases - Additional Lease Infor

Leases - Additional Lease Information (Details)	Jun. 30, 2019
Weighted-average remaining lease term
Operating leases (in years)	17 years
Finance leases (in years)	2 years
Weighted-average discount rate
Operating leases (as a percent)	7.20%
Finance leases (as a percent)	5.00%

Leases - Maturity of Lease Liab

Leases - Maturity of Lease Liabilities (Details) $ in Millions	Jun. 30, 2019USD ($)
Operating Leases
Remainder of 2019	$ 133
2020	221
2021	255
2022	213
2023	180
Thereafter	1,989
Total undiscounted lease payments	2,991
Less: imputed interest	(1,537)
Total lease liabilities	1,454
Finance Lease Excluding Finance Obligation
Lessee, Lease, Description [Line Items]
Remainder of 2019	85
2020	115
2021	86
2022	11
2023	0
Thereafter	0
Total undiscounted lease payments	297
Less: imputed interest	(15)
Total lease liabilities	$ 282

Leases - Narrative (Details)

Leases - Narrative (Details) ft² in Thousands, $ in Millions	1 Months Ended	6 Months Ended	12 Months Ended
	Nov. 30, 2016lease	Jun. 30, 2019USD ($)	Dec. 31, 2015ft²building	Dec. 31, 2018USD ($)
Lessee, Lease, Description [Line Items]
Operating lease, lease not yet commenced		$ 254
Finance lease, lease not yet commenced		6
Property and equipment, net		$ 1,447		$ 1,641
Finance Obligation
Lessee, Lease, Description [Line Items]
Number of buildings under contract | building			2
Rentable square feet under contract | ft²			423
Ownership acquired under the sale leaseback contract		49.00%	49.00%
Ownership percentage retained following lease termination	100.00%
Land Leases
Lessee, Lease, Description [Line Items]
Ownership acquired under the sale leaseback contract		51.00%
Number of land agreement leases | lease	2
Lease term	75 years
Commitments under Land Leases		$ 169
Financing obligation		79
Commitments under Land Leases		1,800
Land Leases | Land
Lessee, Lease, Description [Line Items]
Property and equipment, net		$ 65
Minimum
Lessee, Lease, Description [Line Items]
Operating lease, lease not yet commenced, term		1 year
Finance lease, lease not yet commenced, term		1 year
Maximum
Lessee, Lease, Description [Line Items]
Operating lease, lease not yet commenced, term		11 years
Finance lease, lease not yet commenced, term		10 years

Leases - Failed Sale-Leaseback

Leases - Failed Sale-Leaseback Transaction (Details) - Finance Obligation $ in Millions	Jun. 30, 2019USD ($)
Finance Leases
Remainder of 2019	$ 3
2020	6
2021	6
2022	6
2023	6
Thereafter	833
Total undiscounted lease payments	$ 860

Long-Term Debt and Revolving _3

Long-Term Debt and Revolving Credit Arrangements - Components of Debt (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018	Jun. 13, 2018	Dec. 31, 2015
Debt Instrument [Line Items]
Total debt	$ 4,603	$ 7,491
Less: unamortized discount and issuance costs	(50)	(595)
Less: current portion of long-term debt	(27)	(27)
Long-term debt, net of current portion	4,526	6,869
Secured Loans | 2016 Senior Secured Term Loan
Debt Instrument [Line Items]
Total debt	$ 1,118	1,124
Effective Interest Rate	6.10%		6.10%
Secured Loans | 2018 Senior Secured Term Loan
Debt Instrument [Line Items]
Total debt	$ 1,485	1,493
Effective Interest Rate	6.20%
Convertible Notes | 2021 Convertible Notes
Debt Instrument [Line Items]
Total debt	$ 0	1,844
Effective Interest Rate	23.50%			23.50%
Convertible Notes | 2022 Convertible Notes
Debt Instrument [Line Items]
Total debt	$ 0	1,030
Effective Interest Rate	13.70%
Senior Note | 2023 Senior Note
Debt Instrument [Line Items]
Total debt	$ 500	500
Effective Interest Rate	7.70%
Senior Note | 2026 Senior Note
Debt Instrument [Line Items]
Total debt	$ 1,500	$ 1,500
Effective Interest Rate	8.10%

Long-Term Debt and Revolving _4

Long-Term Debt and Revolving Credit Arrangements - Narrative (Details) - USD ($)	1 Months Ended			3 Months Ended		6 Months Ended		12 Months Ended
	Oct. 31, 2018	Apr. 30, 2018	Jul. 31, 2016	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2015	Dec. 31, 2018	Jun. 13, 2018
Debt Instrument [Line Items]
Total debt				$ 4,603,000,000		$ 4,603,000,000			$ 7,491,000,000
Embedded derivative liability income (expense)				$ (117,000,000)	$ (35,000,000)	$ 58,000,000	$ (402,000,000)
Secured Loans | 2016 Senior Secured Term Loan
Debt Instrument [Line Items]
Proceeds from issuance of secured debt			$ 1,200,000,000
Debt discount			23,000,000
Debt issuance costs			$ 13,000,000
Effective Interest Rate				6.10%		6.10%				6.10%
Total debt				$ 1,118,000,000		$ 1,118,000,000			1,124,000,000
Secured Loans | 2018 Senior Secured Term Loan
Debt Instrument [Line Items]
Proceeds from issuance of secured debt		$ 1,500,000,000
Debt discount		8,000,000
Debt issuance costs		$ 15,000,000
Effective Interest Rate				6.20%		6.20%
Total debt				$ 1,485,000,000		$ 1,485,000,000			1,493,000,000
Convertible Notes | 2021 Convertible Notes
Debt Instrument [Line Items]
Debt discount								$ 1,100,000,000
Debt issuance costs								$ 1,000,000
Effective Interest Rate				23.50%		23.50%		23.50%
Total debt				$ 0		$ 0			1,844,000,000
Proceeds from issuance of convertible debt								$ 1,700,000,000
Stated interest rate								2.50%
Duration for interest type payment election								4 years
Interest rate increase during final 2 year initial term								12.50%
Embedded derivative liability income (expense)				$ (109,000,000)	(25,000,000)	$ 20,000,000	(339,000,000)
Convertible Notes | 2021 Convertible Notes | Minimum
Debt Instrument [Line Items]
Interest rate during maturity extension period								3.50%
Discount on conversion price rate								18.00%
Convertible Notes | 2021 Convertible Notes | Maximum
Debt Instrument [Line Items]
Interest rate during maturity extension period								12.50%
Discount on conversion price rate								30.50%
Convertible Notes | 2022 Convertible Notes
Debt Instrument [Line Items]
Proceeds from issuance of secured debt								$ 949,000,000
Debt discount								312,000,000
Debt issuance costs								$ 100,000
Effective Interest Rate				13.70%		13.70%
Total debt				$ 0		$ 0			1,030,000,000
Stated interest rate								2.50%
Embedded derivative liability income (expense)				$ (8,000,000)	$ (10,000,000)	$ 38,000,000	$ (63,000,000)
Extension period								1 year
Convertible Notes, internal rate of return								8.00%
Redemption period								3 years
Convertible Notes | 2022 Convertible Notes | Minimum
Debt Instrument [Line Items]
Discount on conversion price rate								8.10%
Convertible Notes | 2022 Convertible Notes | Maximum
Debt Instrument [Line Items]
Discount on conversion price rate								44.50%
Senior Note
Debt Instrument [Line Items]
Aggregate principal amount	$ 2,000,000,000
Senior Note | 2023 Senior Note
Debt Instrument [Line Items]
Debt issuance costs	$ 9,000,000
Effective Interest Rate				7.70%		7.70%
Total debt				$ 500,000,000		$ 500,000,000			500,000,000
Stated interest rate	7.50%
Debt instrument term	5 years
Aggregate principal amount	$ 500,000,000
Senior Note | 2023 Senior Note | Level 2
Debt Instrument [Line Items]
Debt instrument, fair value disclosure				$ 531,000,000		$ 531,000,000
Senior Note | 2026 Senior Note
Debt Instrument [Line Items]
Effective Interest Rate				8.10%		8.10%
Total debt				$ 1,500,000,000		$ 1,500,000,000			1,500,000,000
Stated interest rate	8.00%
Debt instrument term	8 years
Aggregate principal amount	$ 1,500,000,000
Senior Note | 2026 Senior Note | Level 2
Debt Instrument [Line Items]
Debt instrument, fair value disclosure				1,600,000,000		1,600,000,000
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Borrowing capacity				2,300,000,000		$ 2,300,000,000
Credit facility, term						5 years
Line of credit balance				0		$ 0
Line of Credit | Letters of Credit
Debt Instrument [Line Items]
Letters of credit outstanding				497,000,000		497,000,000			470,000,000
Letters of credit outstanding that will reduce the available credit under facilities				$ 191,000,000		$ 191,000,000			$ 166,000,000

Long-Term Debt and Revolving _5

Long-Term Debt and Revolving Credit Arrangements - Interest Expense (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Debt Disclosure [Abstract]
Contractual interest coupon	$ 115	$ 57	$ 255	$ 89
Amortization of debt discount and issuance costs	25	77	78	149
8% IRR payout	9	15	26	29
Total interest expense from long-term debt	$ 149	$ 149	$ 359	$ 267

Assets and Liabilities Held f_3

Assets and Liabilities Held for Sale - Narrative (Details) - Lion City Rentals - Not Discontinued Operations $ in Millions	Jan. 25, 2019USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Equity percentage to be purchased	100.00%
Fair value of consideration received, cash	$ 310
Contingent consideration	$ 33

Assets and Liabilities Held f_4

Assets and Liabilities Held for Sale - Summary of Information (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Assets held for sale
Total assets held for sale	$ 0	$ 406
Liabilities held for sale
Total liabilities held for sale	$ 0	11
Not Discontinued Operations | Lion City Rentals
Assets held for sale
Cash and cash equivalents		34
Accounts receivable, net		20
Prepaid expenses and other current assets		30
Property and equipment, net		322
Total assets held for sale		406
Liabilities held for sale
Accounts payable		2
Accrued liabilities		2
Other current liabilities		7
Total liabilities held for sale		11
Net assets held for sale		$ 395

Supplemental Financial Statem_3

Supplemental Financial Statement Information - Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Prepaid expenses	$ 289	$ 265
Other receivables	584	416
Other	256	179
Prepaid expenses and other current assets	$ 1,129	$ 860

Supplemental Financial Statem_4

Supplemental Financial Statement Information - Accrued and Other Current Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accrued legal, regulatory and non-income taxes	$ 1,598	$ 1,134
Accrued Partner liability	748	459
Accrued professional and contractor services	383	298
Accrued compensation and employee benefits	282	261
Accrued marketing expenses	146	152
Other accrued expenses	276	160
Income and other tax liabilities	192	157
Government and airport fees payable	129	104
Short-term finance lease obligation for computer equipment		110
Short-term finance lease obligation for computer equipment	133
Other	359	322
Accrued and other current liabilities	$ 4,246	$ 3,157

Supplemental Financial Statem_5

Supplemental Financial Statement Information - Other Long-Term Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Convertible debt embedded derivatives	$ 0	$ 2,018
Deferred tax liabilities	1,065	1,072
Financing obligation	80	436
Income tax payable	65	80
Other	275	466
Other long-term liabilities	$ 1,485	$ 4,072

Supplemental Financial Statem_6

Supplemental Financial Statement Information - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity, beginning balance	$ (7,385)	$ (8,557)
Other comprehensive income (loss) before reclassifications	21	(26)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Other comprehensive income (loss)	21	(26)
Stockholders' equity, ending balance	15,922	(5,508)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity, beginning balance	(188)	(3)
Stockholders' equity, ending balance	(167)	(29)
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity, beginning balance	(228)	(3)
Other comprehensive income (loss) before reclassifications	17	(65)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Other comprehensive income (loss)	17	(65)
Stockholders' equity, ending balance	(211)	(68)
Unrealized Gains (Losses) on Available-for-Sale Securities, Net of Tax
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' equity, beginning balance	40	0
Other comprehensive income (loss) before reclassifications	4	39
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Other comprehensive income (loss)	4	39
Stockholders' equity, ending balance	$ 44	$ 39

Supplemental Financial Statem_7

Supplemental Financial Statement Information - Other Income (Expenses), Net (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Interest income	$ 64	$ 24	$ 108	$ 42
Foreign currency exchange gains (losses), net	(7)	(37)	(8)	(24)
Gain on business divestitures	0	40	0	3,201
Gain (loss) on debt and equity securities, net	(2)	0	14	1,984
Change in fair value of embedded derivatives	(117)	(35)	58	(402)
Gain on extinguishment of convertible notes and settlement of derivative	444	0	444	0
Other	16	71	42	199
Other income (expense), net	398	63	658	5,000
Upward adjustments	$ 4	$ 0	$ 22	1,984
Grab Holding, Inc.
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on business divestitures				2,200
UBER Russia, CIS Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on business divestitures				$ 954

Redeemable Convertible Prefer_3

Redeemable Convertible Preferred Stock, Common Stock, and Stockholders' Equity (Deficit) - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	May 16, 2019	May 14, 2019	Jan. 31, 2019	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Apr. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred stock, shares authorized (in shares)				10,000,000		10,000,000
Preferred stock, shares issued (in shares)				0		0
Preferred stock, shares outstanding (in shares)				0		0
Share-based compensation expense				$ 3,941	$ 20	$ 3,952	$ 83
Restricted Stock Awards, Restricted Stock Units, and Stock Appreciation Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unamortized compensation costs				$ 2,500		$ 2,500
Weighted-average recognition period						2 years 1 month 6 days
2013 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in stock reserved for issuance (in shares)			85,000,000
Number of shares reserved for future issuance (in shares)			293,000,000
2019 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares reserved for future issuance (in shares)								130,000,000
Equity incentive plan, term over which available awards may increase						10 years
Equity incentive plan, percent of increase						5.00%
ESPP 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares reserved for future issuance (in shares)				25,000,000		25,000,000
ESPP, percent of total shares outstanding, increase calculation									1.00%
ESPP, upper threshold on increase in authorized shares (in shares)									25,000,000
IPO
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Conversion of shares (in shares)		905,000,000
Stock issued during period (in shares)		180,000,000
Stock price (in dollars per share)	$ 45	$ 45
Proceeds from issuance of common stock		$ 8,000
Share-based compensation expense				$ 3,600
Shares withheld to meet tax withholding requirements (in shares)		29,000,000
Shares withheld to meet tax withholding requirement, value		$ 1,300
Private Placement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued during period (in shares)	11,000,000
Proceeds from issuance of common stock	$ 500
Series E Redeemable Convertible Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of securities called by warrants (in shares)										150,071
Series G Redeemable Convertible Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of securities called by warrants (in shares)										922,655
Common Stock | IPO
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued during period (in shares)		76,000,000

Redeemable Convertible Prefer_4

Redeemable Convertible Preferred Stock, Common Stock, and Stockholders' Equity (Deficit) - Summary of Restricted Common Stock (Details) - Restricted Stock shares in Thousands	6 Months Ended
	Jun. 30, 2019$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Shares outstanding (in shares) | shares	898
Awards granted (in shares) | shares	0
Awards vested (in shares) | shares	(353)
Awards canceled (in shares) | shares	(37)
Shares outstanding (in shares) | shares	508
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted-Average Grant-Date Fair Value per Share, Unvested and Outstanding (in dollars per share) | $ / shares	$ 30.33
Weighted-Average Grant-Date Fair Value per Share, Granted (in dollars per share) | $ / shares	0
Weighted-Average Grant-Date Fair Value per Share, Vested (in dollars per share) | $ / shares	34.82
Weighted-Average Grant-Date Fair Value per Share, Canceled (in dollars per share) | $ / shares	34.86
Weighted-Average Grant-Date Fair Value per Share, Unvested and Outstanding (in dollars per share) | $ / shares	$ 26.88

Redeemable Convertible Prefer_5

Redeemable Convertible Preferred Stock, Common Stock, and Stockholders' Equity (Deficit) - SAR and Option Activity (Details) $ / shares in Units, shares in Thousands, $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2019USD ($)$ / sharesshares	Dec. 31, 2018USD ($)$ / sharesshares
Share-Based Compensation Arrangement By Share-Based Payment Award, Options And Equity Instruments Other Than Options, Nonvested, Number Of Shares [Abstract]
Weighted-Average Exercise Price Per Share, Outstanding (in dollars per share) | $ / shares	$ 9.22
Weighted-Average Exercise Price Per Share, Awards granted (in dollars per share) | $ / shares	43.06
Weighted-Average Exercise Price Per Share, Awards exercised (in dollars per share) | $ / shares	2.39
Weighted-Average Exercise Price Per Share, Awards forfeited (in dollars per share) | $ / shares	32.71
Weighted-Average Exercise Price Per Share, Outstanding (in dollars per share) | $ / shares	9.61	$ 9.22
Weighted-Average Exercise Price Per Share, Vested and expected to vest (in dollars per share) | $ / shares	4.34
Weighted-Average Exercise Price Per Share, Exercisable (in dollars per share) | $ / shares	$ 4.34
Share-Based Compensation Arrangement By Share-based Payment Award, Options And Equity Instruments Other Than Options, Nonvested, Additional Disclosures [Abstract]
Weighted-Average Contractual Life, Outstanding	5 years 3 months	5 years 8 months 26 days
Weighted-Average Contractual Life, Vested and expected to vest	4 years 10 months 13 days
Weighted-Average Contractual Life, Exercisable	4 years 10 months 13 days
Aggregate Intrinsic Value, Outstanding | $	$ 1,572	$ 1,456
Aggregate Intrinsic Value, Vested and expected to vest | $	1,497
Aggregate Intrinsic Value, Exercisable | $	$ 1,497
SARs
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Shares outstanding (in shares)	758
Awards granted (in shares)	73
Awards exercised (in shares)	0
Awards canceled (in shares)	(11)
Shares outstanding (in shares)	820	758
Vested and expected to vest (in shares)	632
Exercisable (in shares)	632
Stock options
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options outstanding (in shares)	42,936
Awards granted (in shares)	250
Awards exercised (in shares)	(1,178)
Awards forfeited (in shares)	(70)
Options outstanding (in shares)	41,938	42,936
Vested and expected to vest (in shares)	34,972
Exercisable (in shares)	34,972

Redeemable Convertible Prefer_6

Redeemable Convertible Preferred Stock, Common Stock, and Stockholders' Equity (Deficit) - Restricted Stock Units Activity (Details) - RSUs shares in Thousands	6 Months Ended
	Jun. 30, 2019$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Shares outstanding (in shares) | shares	75,835
Awards granted (in shares) | shares	39,824
Awards vested (in shares) | shares	(17,655)
Awards canceled (in shares) | shares	(5,420)
Shares outstanding (in shares) | shares	92,584
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted-Average Grant-Date Fair Value per Share, Unvested and Outstanding (in dollars per share) | $ / shares	$ 37.20
Weighted-Average Grant-Date Fair Value per Share, Granted (in dollars per share) | $ / shares	44.32
Weighted-Average Grant-Date Fair Value per Share, Vested (in dollars per share) | $ / shares	36.35
Weighted-Average Grant-Date Fair Value per Share, Canceled (in dollars per share) | $ / shares	39.86
Weighted-Average Grant-Date Fair Value per Share, Unvested and Outstanding (in dollars per share) | $ / shares	$ 42.70

Redeemable Convertible Prefer_7

Redeemable Convertible Preferred Stock, Common Stock, and Stockholders' Equity (Deficit) - Stock-Based Compensation Expense (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 3,941	$ 20	$ 3,952	$ 83
Operations and support
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	404	2	405	7
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	212	1	213	4
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	2,557	5	2,560	11
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 768	$ 12	$ 774	$ 61

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Operating Loss Carryforwards [Line Items]
Provision for (benefit from) income taxes	$ (2)	$ 28	$ 17	$ 604
Reserve on uncertain tax positions	1,300		1,300
Increase in gross unrecognized tax benefits			1,200
Settlement with Taxing Authority
Operating Loss Carryforwards [Line Items]
Expected decrease resulting from settlements with taxing authorities	141		141
Foreign Deferred Tax Asset, Intellectual Property
Operating Loss Carryforwards [Line Items]
Step-up tax basis, intellectual property, foreign assets	$ 6,100		$ 6,100

Net Income (Loss) Per Share - C

Net Income (Loss) Per Share - Computation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	May 14, 2019	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	May 16, 2019
Numerator
Net income (loss) including redeemable non-controlling interest		$ (5,246)	$ (878)	$ (6,262)	$ 2,870
Less: net loss attributable to redeemable non-controlling interest, net of tax		10	0	14	0
Less: noncumulative dividends to preferred stockholders		0	0	0	(1,086)
Less: undistributed earnings to participating securities		0	0	0	(1,200)
Net income (loss) attributable to common stockholders		$ (5,236)	$ (878)	$ (6,248)	$ 584
Denominator
Basic weighted-average common stock outstanding (in shares)		1,110,704	440,958	783,900	439,022
Basic net income (loss) per share attributable to common stockholders (in dollars per share)		$ (4.72)	$ (1.99)	$ (7.97)	$ 1.33
Numerator
Net income (loss) attributable to common stockholders		$ (5,236)	$ (878)	$ (6,248)	$ 584
Add: Change in fair value of MLU B.V. put/call feature		0	(10)	(6)	(10)
Add: noncumulative dividends to preferred stockholders		0	0	0	0
Diluted net income (loss) attributable to common stockholders		$ (5,236)	$ (888)	$ (6,254)	$ 574
Denominator
Basic weighted-average common stock outstanding (in shares)		1,110,704	440,958	783,900	439,022
Weighted-average effect of potentially dilutive securities:
Common stock subject to put/call feature (in shares)		0	450	82	551
Other (in shares)		0	0	0	188
Number of shares used in basic net income (loss) per share computation (in shares)		1,110,704	441,408	783,982	476,394
Diluted net income (loss) per share attributable to common stockholders (in dollars per share)		$ (4.72)	$ (2.01)	$ (7.98)	$ 1.20
IPO
Weighted-average effect of potentially dilutive securities:
Stock issued during period (in shares)	180,000
Stock price (in dollars per share)	$ 45					$ 45
Conversion of shares (in shares)	905,000
IPO | Holders of 2021 Convertible Notes and 2022 Convertible Notes
Weighted-average effect of potentially dilutive securities:
Conversion of Convertible Notes to common stock in connection with initial public offering (in shares)	94,000
IPO | Holders of 2021 Convertible Notes and 2022 Convertible Notes | Common Stock
Weighted-average effect of potentially dilutive securities:
Conversion of Convertible Notes to common stock in connection with initial public offering (in shares)		93,978
Stock options
Weighted-average effect of potentially dilutive securities:
Stock options (in shares)		0	0	0	35,147
RSUs
Weighted-average effect of potentially dilutive securities:
Stock options (in shares)		0	0	0	1,486

Net Income (Loss) Per Share - A

Net Income (Loss) Per Share - Antidilutive Securities (Details) - shares shares in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	137,151	1,231,192
Redeemable convertible preferred stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	893,301
Convertible notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	198,484
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	41,937	8,045
Restricted common stock with performance condition
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	1,022
Common stock subject to repurchase
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	1,351	9,408
Warrants to purchase redeemable convertible preferred stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	1,126
SARs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	787
RSUs to settle fixed monetary awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	838	585
RSUs
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	92,838	118,256
Warrants to purchase common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	187	178

Segment Information and Geogr_3

Segment Information and Geographic Information - Summary (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)segment	Jun. 30, 2018USD ($)
Segment Reporting [Abstract]
Number of operating segments | segment			2
Number of reportable segments | segment			2
Segment Reporting Information [Line Items]
Research and developed expenses related to ATG and Other Technology Programs	$ (3,064)	$ (365)	$ (3,473)	$ (705)
Depreciation and amortization	(123)	(98)	(269)	(186)
Stock-based compensation expense	(3,941)	(20)	(3,952)	(83)
Loss from operations	(5,485)	(739)	(6,519)	(1,217)
Segments
Segment Reporting Information [Line Items]
Loss from operations	98	341	(90)	748
Segments | Core Platform
Segment Reporting Information [Line Items]
Loss from operations	220	369	103	796
Segments | Other Bets
Segment Reporting Information [Line Items]
Loss from operations	(122)	(28)	(193)	(48)
Reconciling Items
Segment Reporting Information [Line Items]
Research and developed expenses related to ATG and Other Technology Programs	(105)	(129)	(202)	(246)
Unallocated research and development and general and administrative expenses	(649)	(488)	(1,233)	(956)
Depreciation and amortization	(123)	(98)	(269)	(186)
Stock-based compensation expense	(3,941)	(20)	(3,952)	(83)
Legal, tax, and regulatory reserves and settlements	(380)	(252)	(380)	(252)
Driver appreciation award	(299)	0	(299)	0
Payroll tax on IPO stock-based compensation	(86)	0	(86)	0
Asset impairment/loss on sale of assets	0	(81)	(8)	(113)
Acquisition and financing related expenses	0	0	0	(15)
Gain on restructuring of lease arrangement	0	4	0	4
Impact of 2018 Divested Operations	$ 0	$ (16)	$ 0	$ (118)

Segment Information and Geogr_4

Segment Information and Geographic Information - Geographic Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
Revenue	$ 3,166	$ 2,768	$ 6,265	$ 5,352
United States
Segment Reporting Information [Line Items]
Revenue	1,853	1,469	3,610	2,799
Brazil
Segment Reporting Information [Line Items]
Revenue	188	281	397	557
All other countries
Segment Reporting Information [Line Items]
Revenue	$ 1,125	$ 1,018	$ 2,258	$ 1,996

Commitments and Contingencies (

Commitments and Contingencies (Details) $ in Millions	May 15, 2019plaintiff	Mar. 26, 2019USD ($)	Mar. 11, 2019USD ($)	Sep. 25, 2018plaintiff	May 31, 2017indictment	Jun. 30, 2019USD ($)	Dec. 31, 2016lawsuit	May 31, 2019USD ($)	Dec. 31, 2018USD ($)	Jan. 06, 2017TWD ($)	Jan. 05, 2017TWD ($)
Commitments and Contingencies Disclosure [Abstract]
Loss contingency accrual						$ 1,600			$ 1,100
Loss Contingencies [Line Items]
Taiwan, maximum fine per offense										$ 25,000,000	$ 150,000
HMRC
Loss Contingencies [Line Items]
Value-added-tax percentage						20.00%
National insurance contributions payable, percentage						14.00%
Independant Contractor Misclassification Claims | Minimum | Settled Litigation
Loss Contingencies [Line Items]
Estimated settlement cost								$ 146
Independant Contractor Misclassification Claims | Maximum | Settled Litigation
Loss Contingencies [Line Items]
Estimated settlement cost								$ 170
O'Conner, et al., v. Uber Technologies, Inc. and Yucesoy v. Uber Technologies, Inc., et al.
Loss Contingencies [Line Items]
Number of plaintiffs | plaintiff				2
O'Conner, et al., v. Uber Technologies, Inc. and Yucesoy v. Uber Technologies, Inc., et al. | Settled Litigation
Loss Contingencies [Line Items]
Settlement amount awarded to other party			$ 20
Google v. Levandowski
Loss Contingencies [Line Items]
Settlement amount awarded to other party		$ 127
Estimated settlement cost						$ 62
Joint and Several Liability
Loss Contingencies [Line Items]
Settlement amount awarded to other party		$ 1
Copenhagen Criminal Prosecution
Loss Contingencies [Line Items]
Number of indictments | indictment					4
Malden Transportion v. Uber Technologies, Inc.
Loss Contingencies [Line Items]
Number of plaintiffs | plaintiff	6
Number of lawsuits | lawsuit							7

Variable Interest Entities (V_3

Variable Interest Entities (VIEs) - Narrative (Details)	1 Months Ended	3 Months Ended		6 Months Ended
	Mar. 31, 2018USD ($)buildingsubsidiary	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Dec. 31, 2018USD ($)
Variable Interest Entity [Line Items]
Equity method investments		$ 1,370,000,000		$ 1,370,000,000		$ 1,312,000,000
Limited guarantee		50,000,000		50,000,000		50,000,000
Loss from equity method investment, net of tax		(10,000,000)	$ (14,000,000)	(16,000,000)	$ (17,000,000)
Event Center Office Partners, LLC
Variable Interest Entity [Line Items]
Loss from equity method investment, net of tax				0
Impairment of equity method investments				0
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Assets		132,000,000		132,000,000		$ 115,000,000
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Number of office buildings managed | building	2
Number of wholly owned subsidiaries owning buildings | subsidiary	2
Payments to acquire variable interest entity	$ 136,000,000
VIE, ownership percentage	45.00%
Equity method investments		136,000,000		136,000,000
Limited guarantee		$ 50,000,000		$ 50,000,000
Variable Interest Entity, Not Primary Beneficiary | LLC Partner One
Variable Interest Entity [Line Items]
VIE, ownership percentage	45.00%
Variable Interest Entity, Not Primary Beneficiary | LLC Partner Two
Variable Interest Entity [Line Items]
VIE, ownership percentage	10.00%

Variable Interest Entities (V_4

Variable Interest Entities (VIEs) - Summary of VIEs (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Variable Interest Entity [Abstract]
Investment	$ 136	$ 78
Additional cash contribution	0	58
Limited guarantee	50	50
Maximum exposure to loss	$ 186	$ 186

Non-Controlling Interest (Detai

Non-Controlling Interest (Details)	Jun. 30, 2019	Dec. 31, 2018
JUMP E-Bike and E-Scooters
Noncontrolling Interest [Line Items]
Ownership percentage		100.00%
Diluted ownership percentage		81.00%
UBER Freight
Noncontrolling Interest [Line Items]
Ownership percentage	89.00%	89.00%
Diluted ownership percentage	80.00%

Uncategorized Items - fy2019q2f

Label	Element	Value
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations	us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	$ 8,209,000,000
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations	us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	5,828,000,000
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	9,000,000
Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 9,000,000