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Cash Dividend Distribution - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	0 Months Ended
	Feb. 27, 2014	Jan. 15, 2014	Apr. 30, 2014 Subsequent Events [Member]
Dividends Payable [Line Items]
Cash dividend distribution		$ 6.3
Cash dividend distribution, per share		$ 0.143
Cash dividend declared	$ 7.3		$ 7.3
Cash dividend declared, per share	$ 0.166		$ 0.166
Dividend payable date	Apr. 15, 2014		Jul. 15, 2014
Dividends payment, Date of Record	Mar. 31, 2014		Jun. 30, 2014

X

- Definition

Cash dividend distribution.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

X

- Definition

Common stock dividends declared.

+ References

No definition available.

+ Details

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Namespace Prefix:	meli_
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Balance Type:	debit
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X

- Definition

Aggregate dividends paid during the period for each share of common stock outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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X

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

+ Details

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X

- Definition

Date the declared dividend will be paid, in CCYY-MM-DD format.

+ References

Reference 1: 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

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- Definition

Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

+ References

No definition available.

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