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v3.25.3

Related Party Transactions - Additional Information (Detail) | 12 Months Ended
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Jun. 30, 2025 AUD ($)
Disclosure of transactions between related parties [line items] |
Loans to or from related parties | $ 0
Receivables from or trade payables to related parties | $ 0

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- Definition The cash inflow from repayment to the entity of loans and advances made to related parties. [Refer: Total for all related parties [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2025-01-01 -Paragraph 16 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2025-en-r&anchor=para_16&doctype=Standard -URIDate 2025-03-27 + Details
Name: | ifrs-full_CashReceiptsFromRepaymentOfAdvancesAndLoansMadeToRelatedParties
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with 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 Receivables and Payables due from related parties + References No definition available. + Details
Name: | immp_ReceivablesAndPayablesDueFromRelatedParties
Namespace Prefix: | immp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant