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Long Term Retention Plan - Additional Information (Detail) (Long Term Retention Plan 2014 [Member], USD $) | 6 Months Ended
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Jun. 30, 2014 Quotas
Long Term Retention Plan 2014 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of quotas for payment under LTRP | 6
Percentage of quotas in each installment under LTRP | 16.67%
Long Term Retention Plan payment term | In 6 equal annual quotas (16.67% each) commencing on March 31, 2015
Percentage base for calculation of quotas under LTRP | 8.333%
Long Term Retention Plan each quota calculation term | 8.333% is adjusted by multiplying the nominal amount by the average closing stock price for the last 60 trading days of the year previous to the payment date and divided by the average closing stock price for the last 60 trading days of 2013. The average closing stock price for the 2014 LTRP amounted to $118.48 ("the variable share").
Number of trading days consider for average closing stock price | 60 days
Average closing stock price | $ 118.48

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- Definition Average closing stock price. + References No definition available. + Details
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Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

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- Definition Long term retention plan each quota calculation term. + References No definition available. + Details
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- Definition Long term retention plan payment term. + References No definition available. + Details
Name: | meli_LongTermRetentionPlanPaymentTerm
Namespace Prefix: | meli_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of quotas for payment under long term retention plan. + References No definition available. + Details
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Namespace Prefix: | meli_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of trading days consider for average closing price. + References No definition available. + Details
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Namespace Prefix: | meli_
Data Type: | xbrli:durationItemType
Balance Type: | na
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- Definition Percentage base for calculation of quotas under long term retention plan. + References No definition available. + Details
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Namespace Prefix: | meli_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Percentage quotas in each installment under long term retention plan. + References No definition available. + Details
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Namespace Prefix: | meli_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
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Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration