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Long Term Retention Plan - Long Term Retention Plan Additional Compensation Payable in Cash and Shares (Detail)	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Year 1 (2008):	17.00%meli_LongTermRetentionPlanAdditionalCompensationPayableInCashAndSharesYearOne
Year 2 (2009):	22.00%meli_LongTermRetentionPlanAdditionalCompensationPayableInCashAndSharesYearTwo
Year 3 (2010):	27.00%meli_LongTermRetentionPlanAdditionalCompensationPayableInCashAndSharesYearThree
Year 4 (2011):	34.00%meli_LongTermRetentionPlanAdditionalCompensationPayableInCashAndSharesYearFour

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- Definition

Long term retention plan additional compensation payable in cash and shares year four.

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No definition available.

+ Details

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- Definition

Long term retention plan additional compensation payable in cash and shares year one.

+ References

No definition available.

+ Details

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- Definition

Long term retention plan additional compensation payable in cash and shares year three.

+ References

No definition available.

+ Details

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- Definition

Long term retention plan additional compensation payable in cash and shares year two.

+ References

No definition available.

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