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Commitments for Expenditure - Additional Information (Detail) - AUD ($)	Jun. 30, 2023	Jun. 30, 2022
Text block1 [abstract]
Commitments for expenditure	$ 0	$ 0

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- Definition

The amount of future capital expenditures that the entity is committed to make.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2023-03-23

+ Details

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Balance Type:	credit
Period Type:	instant

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- Definition

Text block1 [abstract]

+ References

No definition available.

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Namespace Prefix:	immp_
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Period Type:	duration