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Commitment and Contingencies - Buyer Protection Program (Details) - Buyer Protection Program - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Other Commitments [Line Items] |  |
Provision for maximum potential exposure | $ 4,002 | $ 2,964
Provision for recorded allowance | $ 6 | $ 5

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- Definition Product Liability, Contingency, Recorded Allowance + References No definition available. + Details
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Namespace Prefix: | meli_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Present value of the accrual for product liability loss contingencies as of the balance sheet date (if the accrual qualifies for discounting). + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |