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Net Income Per Share - Allocation of Net Income Available to Common Shareholders using Two-Class Method (Detail) (USD $) | 3 Months Ended
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Mar. 31, 2014 | Mar. 31, 2013
Earnings Per Share [Abstract] |  |
Net income | $ 30,327,953 | $ 17,522,591
Net loss (income) attributable to noncontrolling interests | (63,980) | (42,338)
Change in redeemable amount of noncontrolling interest | 60,679 | 215,960
Net income attributable to MercadoLibre, Inc. Shareholders corresponding to common stock, Basic | 30,324,652 | 17,696,213
Net income attributable to MercadoLibre, Inc. Shareholders corresponding to common stock, Diluted | $ 30,324,652 | $ 17,696,213

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- Definition Net income attributable to MercadoLibre, Inc., basic. + References No definition available. + Details
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- Definition Net Increase or Decrease in balance of noncontrolling interest in the subsidiary during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4568740-111683 + Details
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- Definition Net Income or Loss Available to Common Stockholders plus adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1505-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1377-109256 + Details
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