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Segment Reporting (Additional Information) (Details) - 1 months ended Jun. 30, 2014 - Caracas [Member] - Venezuelan Operations [Member] VEF in Millions | VEF m² property
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Segment Reporting Information [Line Items] |
Number of properties acquired | 2
Area of new office building | m² | 475.48
Acquisition agreement amount | VEF | VEF 1,474

X
- Definition Acquisition agreement amount. + References No definition available. + Details
Name: | meli_AcquisitionAgreementAmount
Namespace Prefix: | meli_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Area of new office building. + References No definition available. + Details
Name: | meli_AreaOfNewOfficeBuilding
Namespace Prefix: | meli_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Properties Acquired + References No definition available. + Details
Name: | meli_NumberOfPropertiesAcquired
Namespace Prefix: | meli_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- 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_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_StatementGeographicalAxis=meli_CaracasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | dei_LegalEntityAxis=meli_VenezuelanSubsidiaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |