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2.25% Convertible Senior Notes Due 2019 (Carrying Amounts of Liability and Equity Components - Additional Information) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended |
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Mar. 31, 2015 | Jun. 30, 2014
Debt Instrument [Line Items] |  |
Transaction costs related to the equity component | $ 1,177 meli_TransactionCostsAllocatedBetweenLiabilityAndEquityComponents |
Remaining period over which the unamortized debt discount will be amortized | 4 years 3 months |
2.25% Convertible Senior Notes Due 2019 [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument, interest rate |  | 2.25%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = meli_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandNineteenMember

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- Definition Transaction Costs Allocated Between Liability And Equity Components + References No definition available. + Details
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- Definition Remaining amortization period for discount on the liability component of convertible debt which may be settled in cash upon conversion, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Details
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- Details
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