The amount of current trade receivables. [Refer: Trade receivables]

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Reference 2: http://www.xbrl.org/2003/role/exampleRef
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+ Details

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

- Definition

This amount represents the information of invoiced to counterparty.

+ References

No definition available.

+ Details

Name:	iva_AmountInvoicedToCounterparty
Namespace Prefix:	iva_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the average payment period for trade receivables.

+ References

No definition available.

+ Details

Name:	iva_CurrentTradeReceivablesAveragePaymentPeriod
Namespace Prefix:	iva_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount received by the entity from licensing and collaborative agreement counterparty, net of withholding taxes.

+ References

No definition available.

+ Details

Name:	iva_LicensingAndCollaborationAgreementAmountInvoicedToCounterpartyNetOfWithholdingTaxes
Namespace Prefix:	iva_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount received by the entity from licensing and collaborative arrangements, attributable to withholding taxes.

+ References

No definition available.

+ Details

Name:	iva_LicensingAndCollaborationAgreementAmountReceivedAttributableToWithholdingTaxes
Namespace Prefix:	iva_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount paid on licensing arrangements.

+ References

No definition available.

+ Details

Name:	iva_ProceedsFromLicensingArrangements
Namespace Prefix:	iva_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	iva_TradeReceivablesAndOtherCurrentAssetsAndReceivablesLineItems
Namespace Prefix:	iva_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of trade receivables related to reinvoicing of share of costs incurred under the licensing and collaboration agreements.

+ References

No definition available.

+ Details

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Namespace Prefix:	iva_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_NonadjustingEventsAfterReportingPeriodAxis=iva_ReceiptOfPaymentsUnderLicensingArrangementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_LaterThanThreeMonthsAndNotLaterThanSixMonthsMember
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Data Type:	na
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Notes to the consolidated balance sheet - Trade Receivables and Other Current Assets and Receivables - Trade Receivables (Details) € in Thousands, $ in Millions					6 Months Ended
	Jul. 19, 2023 EUR (€)	Jul. 19, 2023 USD ($)	May 22, 2023 EUR (€)	May 22, 2023 USD ($)	Jun. 30, 2023 EUR (€)	Jun. 30, 2023 USD ($)	Dec. 31, 2022 EUR (€)
Trade receivables, tax receivables and other current assets
Trade receivables					€ 2,224
Average payment period for trade receivables					30 days	30 days
Licensing and collaboration agreement with CTTQ
Trade receivables, tax receivables and other current assets
Milestone payment received			€ 1,900	$ 2.1		$ 2.1
Amount received attributable to withholding taxes	€ 200	$ 0.2				0.1
Net amount \| $						$ 2.0
Amount received on licensing arrangements	€ 1,700	$ 1.9
Reinvoicing of share of costs incurred included in trade receivables					€ 300
Licensing and collaboration agreement with CTTQ \| Receipt of payments under Licensing arrangements
Trade receivables, tax receivables and other current assets
Amount received on licensing arrangements					1,900
3 months or less
Trade receivables, tax receivables and other current assets
Trade receivables					2,023		€ 2,022
Between 3 and 6 months
Trade receivables, tax receivables and other current assets
Trade receivables					€ 2,224