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Related party transactions (Details) - ARS ($) $ in Millions | Jun. 30, 2018 | Jun. 30, 2017
--- | --- | ---
Disclosure of transactions between related parties [line items] |  |
Total | $ 890 | $ 1,575
Trade And Other Receivables [Member] |  |
Disclosure of transactions between related parties [line items] |  |
Total | 748 | 1,434
Investments In Financial Assets [Member] |  |
Disclosure of transactions between related parties [line items] |  |
Total | 343 | 324
Trade And Other Payables [Member] |  |
Disclosure of transactions between related parties [line items] |  |
Total | (191) | (172)
Borrowings [Member] |  |
Disclosure of transactions between related parties [line items] |  |
Total | $ (10) | $ (11)

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

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- Definition The amount of total related parties. + References No definition available. + Details
Name: | irsa_TotalRelatedParties
Namespace Prefix: | irsa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=irsa_TradeAndOtherReceivablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=irsa_InvestmentsInFinancialAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=irsa_TradeAndOtherPayablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | ifrs-full_ClassesOfFinancialAssetsAxis=irsa_Borrowings1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |