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Related party transactions - Disclosure of transactions between related parties (Details) € in Thousands | 6 Months Ended
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Jun. 30, 2024 EUR (€)
Related party transactions [abstract] |
Collection | € 1,657
Receivables | 394
Payments | (3,342)
Liabilities | (3,926)
Net collection (payments) | (1,685)
Net receivables (liabilities) | € (3,532)

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- References No definition available. + Details
Name: | ifrs-full_AmountsPayableRelatedPartyTransactions
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | ifrs-full_AmountsReceivableRelatedPartyTransactions
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | ifrs-full_CashAdvancesAndLoansFromRelatedParties
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | ifrs-full_CashAdvancesAndLoansMadeToRelatedParties
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | ifrs-full_CashRepaymentsOfAdvancesAndLoansFromRelatedParties
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | ifrs-full_RelatedPartyTransactionsAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The net amounts of receivables (payable) resulting from related party transactions. + References No definition available. + Details
Name: | inpha_NetAmountsReceivablePayableRelatedPartyTransactions
Namespace Prefix: | inpha_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant