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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
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

X

- 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

X

- Details

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

X

- Details

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