XML 144 R120.htm IDEA: XBRL DOCUMENT
v3.21.1

Commitments - Commitments related to financing activities (Details) € in Thousands, $ in Thousands |  | 1 Months Ended |
--- | --- | --- | ---
Dec. 31, 2020 USD ($) contract | Sep. 30, 2020 item | Dec. 31, 2020 EUR (€)
Disclosure of detailed information about financial instruments [line items] |  |  |
Number Of Derivative Contracts Completed | 3 | 2 |
Notional amount | $ 60,000 |  |
Change in fair value of future currency contracts | $ 60,000 |  |
Foreign currency forwards |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Number Of Derivative Contracts Completed | contract | 3 |  |
Notional amount | $ 60,000 |  |
Change in fair value of future currency contracts | € |  |  | € 1,800
Socit Gnrale | Forward in U.S. dollars payable |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Notional amount | 20,000,000 |  |
Socit Gnrale | Forward in U.S. dollars payable |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Notional amount | 20,000,000 |  |
Socit Gnrale | Forward in euros to be received |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Notional amount | € |  |  | 16,794,021
Socit Gnrale | Forward in euros to be received |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Notional amount | € |  |  | 16,794,021
Crdit Agricole bank | Forward in U.S. dollars payable |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Notional amount | $ 20,000,000 |  |
Crdit Agricole bank | Forward in euros to be received |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Notional amount | € |  |  | € 17,001,020

X
- 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: | ifrs-full_DisclosureOfFinancialInstrumentsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The nominal or face amount of a financial instrument, used to calculate payments made on that instrument. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_NotionalAmount
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of change in fair value of derivatives as of the reporting date recorded in other current liabilities. + References No definition available. + Details
Name: | iva_ChangeInFairValueOfDerivatives
Namespace Prefix: | iva_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Number of derivative contracts completed during the period. + References No definition available. + Details
Name: | iva_NumberOfDerivativeContractsCompleted
Namespace Prefix: | iva_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=iva_IfrsForeignExchangeForwardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CounterpartiesAxis=iva_SocieteGeneraleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=iva_ForeignExchangeForwardInUsDollarsCommitmentsGivenOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=iva_ForeignExchangeForwardInUsDollarsCommitmentsGivenTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=iva_ForeignExchangeForwardInEurosCommitmentsReceivedOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=iva_ForeignExchangeForwardInEurosCommitmentsReceivedTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_CounterpartiesAxis=iva_CreditAgricoleBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=iva_ForeignExchangeForwardInUsDollarsCommitmentsGivenThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=iva_ForeignExchangeForwardInEurosCommitmentsReceivedThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |