Divestiture - Narrative (Details) - Not Discontinued Operations $ in Millions	Jan. 19, 2021 USD ($)
Aurora
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Fair value of common shares received	$ 1,277
Apparate
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Derecognition of ATG Business' non-controlling interests	$ 1,057
Vesting term (in months)	12 months
Liability recognized for future obligations	$ 315
Apparate \| Aurora
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Fair value of common shares received	$ 1,300
Equity interest received, diluted (in percent)	22.00%
Equity interest received, basic (in percent)	25.00%
Additional investment	$ 400
Additional equity interest received, diluted (in percent)	4.00%
Additional equity interest received, basic (in percent)	5.00%

Disposal Group, Including Discontinued Operation, Equity Interest Received, Fair Value

No definition available.

Name:	uber_DisposalGroupIncludingDiscontinuedOperationEquityInterestReceivedFairValue
Namespace Prefix:	uber_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Disposal Group, Including Discontinued Operations, Additional Equity Interest Received, Basic

+ References

No definition available.

+ Details

Name:	uber_DisposalGroupIncludingDiscontinuedOperationsAdditionalEquityInterestReceivedBasic
Namespace Prefix:	uber_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Disposal Group, Including Discontinued Operations, Additional Equity Interest Received, Diluted

+ References

No definition available.

+ Details

Name:	uber_DisposalGroupIncludingDiscontinuedOperationsAdditionalEquityInterestReceivedDiluted
Namespace Prefix:	uber_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Disposal Group, Including Discontinued Operations, Additional Investment

+ References

No definition available.

+ Details

Name:	uber_DisposalGroupIncludingDiscontinuedOperationsAdditionalInvestment
Namespace Prefix:	uber_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Disposal Group, Including Discontinued Operations, Equity Interest Received, Basic

+ References

No definition available.

+ Details

Name:	uber_DisposalGroupIncludingDiscontinuedOperationsEquityInterestReceivedBasic
Namespace Prefix:	uber_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Disposal Group, Including Discontinued Operations, Equity Interest Received, Diluted

+ References

No definition available.

+ Details

Name:	uber_DisposalGroupIncludingDiscontinuedOperationsEquityInterestReceivedDiluted
Namespace Prefix:	uber_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Disposal Group, Including Discontinued Operations, Liability Recognized For Future Obligations

+ References

No definition available.

+ Details

Name:	uber_DisposalGroupIncludingDiscontinuedOperationsLiabilityRecognizedForFutureObligations
Namespace Prefix:	uber_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Disposal Group, RSU's Transferred During Disposal, Vesting Terms

+ References

No definition available.

+ Details

Name:	uber_DisposalGroupRSUsTransferredDuringDisposalVestingTerms
Namespace Prefix:	uber_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Noncontrolling Interest, Decrease From Disposal

+ References

No definition available.

+ Details

Name:	uber_NoncontrollingInterestDecreaseFromDisposal
Namespace Prefix:	uber_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_DisposalGroupClassificationAxis=us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=uber_AuroraEquitySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=uber_ApparateUSALLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: