Description of Business and Summary of Significant Accounting Policies (Policies)	3 Months Ended
Mar. 31, 2022
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, 2021 included herein was derived from the audited consolidated financial statements as of that date. 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, 2021, included in our Annual Report on Form 10-K. The results for the interim periods are not necessarily indicative of results for the full year. 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, comprehensive loss, cash flows and the change in equity for the periods presented. There have been no changes to our significant accounting policies described in the Annual Report on Form 10-K for the year ended December 31, 2021 filed with the SEC on February 24, 2022 that have had a material impact on our condensed consolidated financial statements and related notes.
Basis of Consolidation	Basis of ConsolidationOur condensed consolidated financial statements include the accounts of Uber Technologies, Inc. and entities consolidated under the variable interest and voting models. All intercompany balances and transactions have been eliminated. Refer to Note 13 – Variable Interest Entities for further information.
Use of Estimates	Use of Estimates The preparation of our 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, management evaluates estimates, including, but not limited to: fair values of investments and other financial instruments (including the measurement of credit or impairment losses); useful lives of amortizable long-lived assets; fair value of acquired intangible assets and related impairment assessments; impairment of goodwill; stock-based compensation; income taxes and non-income tax reserves; certain deferred tax assets and tax liabilities; insurance reserves; and other contingent liabilities. These estimates are inherently subject to judgment and actual results could differ from those estimates. We considered the impacts of the COVID-19 pandemic on the assumptions and inputs (including market data) supporting certain of these estimates, assumptions and judgments, in particular, our impairment assessment related to the determination of the fair values of certain investments and equity method investments as well as goodwill and the recoverability of long-lived assets. The level of uncertainties and volatility in the global financial markets and economies resulting from the pandemic as well as the uncertainties related to the impact of the pandemic on us and our investees' operations and financial performance means that these estimates may change in future periods, as new events occur and additional information is obtained.
Certain Significant Risks and Uncertainties - COVID-19	Certain Significant Risks and Uncertainties - COVID-19 Various governments continue to implement, lift, and in some regions reinstate restrictions, including business activities and travel restrictions. These restrictions have had an adverse impact on our business and operations by reducing, in particular, the global demand for Mobility offerings, while accelerating the growth of our Delivery offerings. COVID-19 has produced uncertainty around the world and it is not possible to predict the COVID-19 pandemic’s cumulative and ultimate impact on our future business operations, results of operations, financial position, liquidity, and cash flows. The extent of the impact of the pandemic on our business and financial results will depend largely on future developments, including the duration of the spread of the outbreak and any resurgences of the outbreak or variants of the virus, both globally and within the United States, the administration, adoption and efficacy of vaccines in the United States and internationally, the impact on capital, foreign currencies exchange and financial markets, governmental or regulatory orders that impact our business and whether the impacts may result in permanent changes to our end-users’ behavior, all of which are highly uncertain and cannot be predicted.
Recently Adopted Accounting Pronouncements and Recently Issued Accounting Pronouncements Not Yet Adopted	Recently Adopted Accounting Pronouncements In November 2021, the FASB issued ASU 2021-10, “Government Assistance (Topic 832): Disclosures by Business Entities about Government Assistance,” which requires disclosures about transactions with a government that are accounted for by applying a grant or contribution accounting model by analogy. The standard is effective for public companies for fiscal years beginning after December 15, 2021. Early adoption is permitted. We adopted the ASU prospectively on January 1, 2022. The additional required annual disclosures are not expected to have a material impact on our consolidated financial statements. Recently Issued Accounting Pronouncements Not Yet Adopted In October 2021, the FASB issued ASU 2021-08, “Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers,” which requires entities to apply Topic 606 to recognize and measure contract assets and contract liabilities in a business combination as if the acquiring entity had originated the contracts. The standard is effective for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2022. Early adoption is permitted. We are currently evaluating the impact of this accounting standard update on our consolidated financial statements.
Net Income (Loss) Per Share	Basic net loss per share is computed by dividing net loss by the weighted-average number of common shares outstanding for the periods presented. Diluted net loss per share is computed by giving effect to all potential weighted average dilutive common stock. The dilutive effect of outstanding awards and convertible securities is reflected in diluted net loss per share by application of the treasury stock method or if-converted method, as applicable. We take into account the effect on consolidated net loss per share of dilutive securities of entities in which we hold equity interests that are accounted for using the equity method.

Description of Business and Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

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, 2021 included herein was derived from the audited consolidated financial statements as of that date. 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, 2021, included in our Annual Report on Form 10-K. The results for the interim periods are not necessarily indicative of results for the full year.

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, comprehensive loss, cash flows and the change in equity for the periods presented.

There have been no changes to our significant accounting policies described in the Annual Report on Form 10-K for the year ended December 31, 2021 filed with the SEC on February 24, 2022 that have had a material impact on our condensed consolidated financial statements and related notes.

Basis of Consolidation

Basis of ConsolidationOur condensed consolidated financial statements include the accounts of Uber Technologies, Inc. and entities consolidated under the variable interest and voting models. All intercompany balances and transactions have been eliminated. Refer to Note 13 – Variable Interest Entities for further information.

Use of Estimates

The preparation of our 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, management evaluates estimates, including, but not limited to: fair values of investments and other financial instruments (including the measurement of credit or impairment losses); useful lives of amortizable long-lived assets; fair value of acquired intangible assets and related impairment assessments; impairment of goodwill; stock-based compensation; income taxes and non-income tax reserves; certain deferred tax assets and tax liabilities; insurance reserves; and other contingent liabilities. These estimates are inherently subject to judgment and actual results could differ from those estimates. We considered the impacts of the COVID-19 pandemic on the assumptions and inputs (including market data) supporting certain of these estimates, assumptions and judgments, in particular, our impairment assessment related to the determination of the fair values of certain investments and equity method investments as well as goodwill and the recoverability of long-lived assets. The level of uncertainties and volatility in the global financial markets and economies resulting from the pandemic as well as the uncertainties related to the impact of the pandemic on us and our investees' operations and financial performance means that these estimates may change in future periods, as new events occur and additional information is obtained.

Certain Significant Risks and Uncertainties - COVID-19

Various governments continue to implement, lift, and in some regions reinstate restrictions, including business activities and travel restrictions. These restrictions have had an adverse impact on our business and operations by reducing, in particular, the global demand for Mobility offerings, while accelerating the growth of our Delivery offerings. COVID-19 has produced uncertainty around the world and it is not possible to predict the COVID-19 pandemic’s cumulative and ultimate impact on our future business operations, results of operations, financial position, liquidity, and cash flows. The extent of the impact of the pandemic on our business and financial results will depend largely on future developments, including the duration of the spread of the outbreak and any resurgences of the outbreak or variants of the virus, both globally and within the United States, the administration, adoption and efficacy of vaccines in the United States and internationally, the impact on capital, foreign currencies exchange and financial markets, governmental or regulatory orders that impact our business and whether the impacts may result in permanent changes to our end-users’ behavior, all of which are highly uncertain and cannot be predicted.

Recently Adopted Accounting Pronouncements and Recently Issued Accounting Pronouncements Not Yet Adopted

Recently Adopted Accounting Pronouncements

In November 2021, the FASB issued ASU 2021-10, “Government Assistance (Topic 832): Disclosures by Business Entities about Government Assistance,” which requires disclosures about transactions with a government that are accounted for by applying a grant or contribution accounting model by analogy. The standard is effective for public companies for fiscal years beginning after December 15, 2021. Early adoption is permitted. We adopted the ASU prospectively on January 1, 2022. The additional required annual disclosures are not expected to have a material impact on our consolidated financial statements.

Recently Issued Accounting Pronouncements Not Yet Adopted

In October 2021, the FASB issued ASU 2021-08, “Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers,” which requires entities to apply Topic 606 to recognize and measure contract assets and contract liabilities in a business combination as if the acquiring entity had originated the contracts. The standard is effective for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2022. Early adoption is permitted. We are currently evaluating the impact of this accounting standard update on our consolidated financial statements.

Net Income (Loss) Per Share

Basic net loss per share is computed by dividing net loss by the weighted-average number of common shares outstanding for the periods presented. Diluted net loss per share is computed by giving effect to all potential weighted average dilutive common stock. The dilutive effect of outstanding awards and convertible securities is reflected in diluted net loss per share by application of the treasury stock method or if-converted method, as applicable.

We take into account the effect on consolidated net loss per share of dilutive securities of entities in which we hold equity interests that are accounted for using the equity method.