Document and Entity Information	Nov. 15, 2021
Entity Listings [Line Items]
Document Type	8-K
Amendment Flag	false
Document Period End Date	Nov. 15, 2021
Entity Registrant Name	MERCADOLIBRE INC
Entity Incorporation, State or Country Code	DE
Entity File Number	001-33647
Entity Tax Identification Number	98-0212790
Entity Address, Address Line One	Dr. Luis Bonavita 1294, Of. 1733, Tower II
Entity Address, City or Town	Montevideo
Entity Address, Country	UY
Entity Address, Postal Zip Code	11300
City Area Code	598
Local Phone Number	2-927-2770
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Entity Emerging Growth Company	false
Entity Central Index Key	0001099590
The Nasdaq Global Select Market [Member] \| Common Stock [Member]
Entity Listings [Line Items]
Title of 12(b) Security	Common Stock, $0.001 par value per
Trading Symbol	MELI
Security Exchange Name	NASDAQ
The Nasdaq Stock Market LLC [Member] \| 2.375% Sustainability Notes due 2026 [Member]
Entity Listings [Line Items]
Title of 12(b) Security	2.375% Sustainability Notes due 2026
Trading Symbol	MELI26
Security Exchange Name	NASDAQ
The Nasdaq Stock Market LLC [Member] \| 3.125% Notes due 2031 [Member]
Entity Listings [Line Items]
Title of 12(b) Security	3.125% Notes due 2031
Trading Symbol	MELI31
Security Exchange Name	NASDAQ

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Area code of city

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For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

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The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

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Address Line 1 such as Attn, Building Name, Street Name

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Name of the City or Town

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ISO 3166-1 alpha-2 country code.

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Code for the postal or zip code

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A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Indicate if registrant meets the emerging growth company criteria.

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Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

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No definition available.

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Two-character EDGAR code representing the state or country of incorporation.

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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.

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The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

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The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Local phone number for entity.

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Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

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Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Title of a 12(b) registered security.

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Name of the Exchange on which a security is registered.

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Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.

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Trading symbol of an instrument as listed on an exchange.

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Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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