Other non-current assets (Details) - EUR (€) € in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Other non-current assets
Long-term deposit accounts	€ 0	€ 9,000	€ 700
Advance payments - non-current	1,047	1,047	895
Accrued income	0	0	65
Security deposits	0	8	8
Other non-current assets	€ 1,047	€ 10,055	€ 1,668

No definition available.

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Period Type:	duration

- Definition

The amount of non-current accrued income including non-current contract assets. [Refer: Accrued income including contract assets]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 55
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-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 78
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78&doctype=Standard
-URIDate 2024-03-27

+ Details

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

- Definition

The amount of non-current assets that the entity does not separately disclose in the same statement or note. [Refer: Non-current assets]

+ References

+ Details

Name:	ifrs-full_OtherNoncurrentAssets
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount represents the non current advances of suppliers.

+ References

No definition available.

+ Details

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

- Definition

It represents information about non current long term deposits from customers.

+ References

No definition available.

+ Details

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

- Definition

The non-current amount of security deposits.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant