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  xmlns:meli="http://mercadolibre.com/20260914"
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  xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xlink="http://www.w3.org/1999/xlink">
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    <context id="c20260914to20260914">
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        </entity>
        <period>
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            <endDate>2026-09-14</endDate>
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    <context id="c20260914to20260914_StatementClassOfStockAxis_Four900NotesDue2033Member">
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            <segment>
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        <period>
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            <endDate>2026-09-14</endDate>
        </period>
    </context>
    <dei:AmendmentFlag
      contextRef="c20260914to20260914"
      id="Fact_8bff8adcaa114127ad5d7f7bfc62b7e3">false</dei:AmendmentFlag>
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      contextRef="c20260914to20260914"
      id="Fact_c80a5afd05414495afd6fa44097bf3d5">0001099590</dei:EntityCentralIndexKey>
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      contextRef="c20260914to20260914"
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      contextRef="c20260914to20260914"
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      contextRef="c20260914to20260914"
      id="Fact_0b16ec48e4a9460dac79a3f3d730208e">MercadoLibre, Inc.</dei:EntityRegistrantName>
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      contextRef="c20260914to20260914"
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    <dei:EntityIncorporationStateCountryCode
      contextRef="c20260914to20260914"
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    <dei:EntityTaxIdentificationNumber
      contextRef="c20260914to20260914"
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    <dei:EntityAddressAddressLine1
      contextRef="c20260914to20260914"
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    <dei:EntityAddressCityOrTown
      contextRef="c20260914to20260914"
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    <dei:EntityAddressCountry
      contextRef="c20260914to20260914"
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    <dei:CityAreaCode
      contextRef="c20260914to20260914"
      id="Fact_0e172d9a425a4d808bc051c52e05e22e">598</dei:CityAreaCode>
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      contextRef="c20260914to20260914"
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      contextRef="c20260914to20260914"
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      contextRef="c20260914to20260914"
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    <dei:PreCommencementTenderOffer
      contextRef="c20260914to20260914"
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      contextRef="c20260914to20260914"
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    <dei:Security12bTitle
      contextRef="c20260914to20260914_StatementClassOfStockAxis_CommonStockMember"
      id="Fact_e6c17e1fb4404132abc3e3daecb40d58">Common Stock, $0.001 par value per share</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="c20260914to20260914_StatementClassOfStockAxis_CommonStockMember"
      id="Fact_5b4e943e66d649dbb8dd00fe826f2518">MELI</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="c20260914to20260914_StatementClassOfStockAxis_CommonStockMember"
      id="Fact_6ebc520541d842efb6074727cc7b1651">NASDAQ</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="c20260914to20260914_StatementClassOfStockAxis_Three125NotesDue2031Member"
      id="Fact_ccdfda41521f4a2caa83a23fdebdeb4c">3.125% Notes due 2031</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="c20260914to20260914_StatementClassOfStockAxis_Three125NotesDue2031Member"
      id="Fact_def555368b68443bb51d53236c0d94b2">MELI31</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="c20260914to20260914_StatementClassOfStockAxis_Three125NotesDue2031Member"
      id="Fact_cdb885ea0d944ae2b68313df2bd6ef07">NASDAQ</dei:SecurityExchangeName>
    <dei:Security12bTitle
      contextRef="c20260914to20260914_StatementClassOfStockAxis_Four900NotesDue2033Member"
      id="Fact_3d8538b873214218864d8252d3f4f8a0">4.900% Notes due 2033</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="c20260914to20260914_StatementClassOfStockAxis_Four900NotesDue2033Member"
      id="Fact_d5c530fea0544dbc875fcc1b742502f3">MELI33</dei:TradingSymbol>
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      contextRef="c20260914to20260914_StatementClassOfStockAxis_Four900NotesDue2033Member"
      id="Fact_b9ff466dcd70460196355893a04ba20d">NASDAQ</dei:SecurityExchangeName>
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      id="Fact_5c952c9f963b4149afa03c26be72406b">false</dei:EntityEmergingGrowthCompany>
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