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v3.25.3

Equity - Reserves and Retained Earnings - Additional Information (Detail) - AUD ($) | 12 Months Ended
--- | ---
Jun. 30, 2025 | Jun. 30, 2024
Disclosure of reserves within equity [line items] |  |
Conversion of Convertible Notes | $ 0 | $ 0

X
- 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_DisclosureOfReservesWithinEquityLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Accumualted losses conversion of convertible notes. + References No definition available. + Details
Name: | immp_AccumualtedLossesConversionOfConvertibleNotes
Namespace Prefix: | immp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration