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The expense of all forms of consideration given by an entity in exchange for a service rendered by employees or for the termination of employment.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 102
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_102&doctype=Standard
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 99
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_99&doctype=Standard
-URIDate 2024-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 104
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_104&doctype=Standard
-URIDate 2024-03-27

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

The amount of expense arising from purchased insurance.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 112
-Subparagraph c
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-URIDate 2024-03-27

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

The amount of expenses incurred for the day-to-day servicing of assets, which may include the cost of labour, consumables or small parts.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 85
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_85&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_RepairsAndMaintenanceExpense
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Data Type:	xbrli:monetaryItemType
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Represents information pertaining to depreciation, amortization and provisions.

No definition available.

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Namespace Prefix:	iva_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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Represents the information pertaining to disposables.

No definition available.

Name:	iva_Disposables
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Represents the information pertaining to energy and liquids.

No definition available.

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

Represents the information pertaining to fees.

No definition available.

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

Represents the information pertaining to it systems.

No definition available.

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

Represents the information pertaining to amount of all operating expenses.

No definition available.

Name:	iva_OperatingExpenseExcludingOtherOperatingIncomeExpense
Namespace Prefix:	iva_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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Represents the information pertaining to other operating expenses.

No definition available.

Name:	iva_OtherOperatingExpenses
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Represents the information pertaining to patents.

No definition available.

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

Represents the information pertaining to studies.

No definition available.

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

Represents the information pertaining to support costs.

No definition available.