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v2.4.1.9

2.25% Convertible Senior Notes Due 2019 (Additional Information) (Details) (USD $) | 3 Months Ended | 0 Months Ended |
--- | --- | --- | ---
Mar. 31, 2015 item | Mar. 31, 2014 | Jun. 30, 2014 | Dec. 31, 2014
Debt Instrument [Line Items] |  |  |  |
Debt Instrument, convertible maturity start date | Jan. 01, 2019 |  |  |
Debt instrument, convertible trading days | 20 us-gaap_DebtInstrumentConvertibleThresholdTradingDays |  |  |
Debt instrument, convertible consecutive trading days | 30 days |  |  |
Payment for capped call transactions | $ 19,668,000 us-gaap_PaymentsForHedgeFinancingActivities |  |  |
Net of deferred income tax effect amounts | 6,118,000 us-gaap_DeferredIncomeTaxExpenseBenefit | (4,675,000)us-gaap_DeferredIncomeTaxExpenseBenefit |  |
Minimum [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Percentage of debt conversion price | 130.00%us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |
Capped Call Transactions [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Strike price, per share | $ 126.02 meli_StrikePricePerShare / us-gaap_DebtInstrumentAxis = meli_CappedCallMember |  |  |
Approximate cap price, per share | $ 155.78 meli_CapPricePerShare / us-gaap_DebtInstrumentAxis = meli_CappedCallMember |  |  |
2.25% Convertible Senior Notes Due 2019 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, aggregate principal amount | 330,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = meli_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandNineteenMember |  | 330,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = meli_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandNineteenMember | 330,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_LongtermDebtTypeAxis = meli_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandNineteenMember
Debt instrument, interest rate |  |  | 2.25%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_LongtermDebtTypeAxis = meli_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandNineteenMember |
Debt instrument, maturity end date |  |  | Jul. 01, 2019 |
Initial conversion rate |  |  | 7.9353%us-gaap_DebtConversionConvertedInstrumentRate / us-gaap_LongtermDebtTypeAxis = meli_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandNineteenMember |
Debt conversion price per share of common stock |  |  | $ 126.02 us-gaap_DebtInstrumentConvertibleConversionPrice1 / us-gaap_LongtermDebtTypeAxis = meli_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandNineteenMember |
Proceeds from issuance of convertible debt, net of transaction cost |  |  | 322,000,000 meli_ProceedsFromConvertibleDebtNetOfTransactionCost / us-gaap_LongtermDebtTypeAxis = meli_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandNineteenMember |
Debt Conversion, Converted Instrument, Amount |  |  | 1,000 us-gaap_DebtConversionConvertedInstrumentAmount1 / us-gaap_LongtermDebtTypeAxis = meli_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandNineteenMember |
Net carrying amount | 283,015,000 us-gaap_DebtLongtermAndShorttermCombinedAmount / us-gaap_LongtermDebtTypeAxis = meli_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandNineteenMember |  |  |
Carrying value of the permanent equity component reported in additional paid-in-capital | 46,985,000 us-gaap_AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt / us-gaap_LongtermDebtTypeAxis = meli_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandNineteenMember |  |  |
Effective interest rate after allocation of transaction costs | 6.10%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_LongtermDebtTypeAxis = meli_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandNineteenMember |  |  |
Cash flows, discount rate | 5.55%us-gaap_FairValueInputsDiscountRate / us-gaap_LongtermDebtTypeAxis = meli_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandNineteenMember |  |  |
Deferred tax liabilities, convertible notes | 16,445,000 us-gaap_DeferredTaxLiabilitiesFinancingArrangements / us-gaap_LongtermDebtTypeAxis = meli_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandNineteenMember |  |  |
2.25% Convertible Senior Notes Due 2019 [Member] | Capped Call Transactions [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Net proceeds from issuance of convertible debt | 321,732,000 us-gaap_ProceedsFromConvertibleDebt / us-gaap_DebtInstrumentAxis = meli_CappedCallMember / us-gaap_LongtermDebtTypeAxis = meli_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandNineteenMember |  |  |
Transaction costs | 8,268,000 us-gaap_DebtIssuanceCosts / us-gaap_DebtInstrumentAxis = meli_CappedCallMember / us-gaap_LongtermDebtTypeAxis = meli_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandNineteenMember |  |  |
Payment for capped call transactions | 19,668,000 us-gaap_PaymentsForHedgeFinancingActivities / us-gaap_DebtInstrumentAxis = meli_CappedCallMember / us-gaap_LongtermDebtTypeAxis = meli_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandNineteenMember |  |  |
Net of deferred income tax effect amounts | $ 12,784,000 us-gaap_DeferredIncomeTaxExpenseBenefit / us-gaap_DebtInstrumentAxis = meli_CappedCallMember / us-gaap_LongtermDebtTypeAxis = meli_TwoPointTwoFivePercentageConvertibleSeniorNotesDueTwoThousandNineteenMember |  |  |
Measurement Period [Member] | Maximum [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Percentage of debt conversion price | 98.00%us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger / us-gaap_DebtInstrumentRedemptionPeriodAxis = meli_MeasurementPeriodOneMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |

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- Definition Adjustment to additional paid in capital resulting from the recognition of convertible debt instruments as two separate components - a debt component and an equity component. This bifurcation may result in a basis difference associated with the liability component that represents a temporary difference for purposes of applying accounting for income taxes. The initial recognition of deferred taxes for the tax effect of that temporary difference is as an adjustment to additional paid in capital. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 25 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=26072319&loc=SL6014347-161799 + Details
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- Definition The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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- Definition Dividend or interest rate associated with the financial instrument issued in exchange for the original debt being converted in a noncash or part noncash transaction. Noncash are transactions that affect recognized assets or liabilities but that do not result in cash receipts or cash payments. Part noncash refers to that portion of the transaction not resulting in cash receipts or cash payments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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- Definition Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instruments must exceed threshold percentage for a specified number of trading days to trigger conversion feature, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 3: 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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- Definition Latest date the outstanding debt instruments are required to be repaid, in CCYY-MM-DD format. + 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)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Earliest date the outstanding debt instruments are required to be repaid, in CCYY-MM-DD format. + 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)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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