The amount of current investments.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_55&doctype=Standard
-URIDate 2025-03-27

Name:	ifrs-full_CurrentInvestments
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The amount of non-current financial assets. [Refer: Financial assets]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2025-01-01
-Paragraph 25
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_25&doctype=Standard
-URIDate 2025-03-27

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Period Type:	instant

The decrease in non-current financial assets resulting from derecognition.

No definition available.

Name:	inpha_DecreaseThroughDerecognitionNonCurrentFinancialAssets
Namespace Prefix:	inpha_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The decrease in current investment resulting from derecognition.

No definition available.

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Namespace Prefix:	inpha_
Data Type:	xbrli:monetaryItemType
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The decrease in short-term investment and non-current financial assets resulting from derecognition.

No definition available.

Name:	inpha_DecreaseThroughDerecognitionShortTermInvestmentAndNonCurrentFinancialAssets
Namespace Prefix:	inpha_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

The amount of income arising from interest for current financial assets that are not at fair value through profit or loss.

No definition available.

Name:	inpha_IncreaseDecreaseInAccruedInterestForCurrentFinancialAssetsNotAtFairValueThroughProfitOrLoss
Namespace Prefix:	inpha_
Data Type:	xbrli:monetaryItemType
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The amount of income arising from interest for non-current financial assets that are not at fair value through profit or loss.

No definition available.

Name:	inpha_IncreaseDecreaseInAccruedInterestForNonCurrentFinancialAssetsNotAtFairValueThroughProfitOrLoss
Namespace Prefix:	inpha_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The amount of income arising from interest for short-term and non-current financial assets that are not at fair value through profit or loss.

No definition available.

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Namespace Prefix:	inpha_
Data Type:	xbrli:monetaryItemType
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Non-Current Financial Assets

No definition available.

Name:	inpha_NonCurrentFinancialAssetsAbstract
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The increase in non-current financial assets resulting from origination or purchase.

No definition available.

Name:	inpha_NonCurrentFinancialAssetsAcquisitions
Namespace Prefix:	inpha_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The increase (decrease) in non-current financial assets resulting from foreign exchange and other movements.

No definition available.

Name:	inpha_NonCurrentFinancialAssetsForeignCurrencyEffect
Namespace Prefix:	inpha_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The gains (losses) on non-current financial assets at fair value through profit or loss.

No definition available.

Name:	inpha_NonCurrentFinancialAssetsVariationOfFairValueThroughTheConsolidatedStatementOfIncomeLoss
Namespace Prefix:	inpha_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Short Term Investments1

No definition available.

Name:	inpha_ShortTermInvestments1Abstract
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The increase in current investment resulting from origination or purchase.

No definition available.

Name:	inpha_ShortTermInvestmentsAcquisitions
Namespace Prefix:	inpha_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The amount of short-term investments and non-current financial assets.

No definition available.

Name:	inpha_ShortTermInvestmentsAndNonCurrentFinancialAssets
Namespace Prefix:	inpha_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The increase (decrease) in current financial assets resulting from foreign exchange and other movements.

No definition available.

Name:	inpha_ShortTermInvestmentsForeignCurrencyEffect
Namespace Prefix:	inpha_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The gains (losses) on current financial assets at fair value through profit or loss.

No definition available.

Name:	inpha_ShortTermInvestmentsVariationOfFairValueThroughTheConsolidatedStatementOfIncomeLoss
Namespace Prefix:	inpha_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The increase in short-term investments and non-current financial assets resulting from origination or purchase.

No definition available.

Name:	inpha_TotalAcquisitions
Namespace Prefix:	inpha_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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The increase (decrease) in short-term and non-current financial assets resulting from foreign exchange and other movements.

No definition available.

Name:	inpha_TotalForeignCurrencyEffect
Namespace Prefix:	inpha_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Total Short-Term Investments And Non-Current Financial Assets

No definition available.

Name:	inpha_TotalShortTermInvestmentsAndNonCurrentFinancialAssetsAbstract
Namespace Prefix:	inpha_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The gains (losses) on short-term investment and non-current financial assets at fair value through profit or loss.

No definition available.