XML 94 R70.htm IDEA: XBRL DOCUMENT
v3.21.1

Accounting Principles - Property, plant and equipment (Details) | 12 Months Ended
--- | ---
Dec. 31, 2020
Buildings | Minimum |
Accounting Principles |
Useful lives of property, plant and equipment | 20 years
Buildings | Maximum |
Accounting Principles |
Useful lives of property, plant and equipment | 25 years
Fixtures and fittings |
Accounting Principles |
Useful lives of property, plant and equipment | 10 years
Technical facilities | Minimum |
Accounting Principles |
Useful lives of property, plant and equipment | 6 years
Technical facilities | Maximum |
Accounting Principles |
Useful lives of property, plant and equipment | 10 years
Equipment and tooling | Minimum |
Accounting Principles |
Useful lives of property, plant and equipment | 6 years
Equipment and tooling | Maximum |
Accounting Principles |
Useful lives of property, plant and equipment | 10 years
General facilities, miscellaneous fixtures and fittings |
Accounting Principles |
Useful lives of property, plant and equipment | 10 years
Office equipment |
Accounting Principles |
Useful lives of property, plant and equipment | 5 years
IT equipment |
Accounting Principles |
Useful lives of property, plant and equipment | 5 years
Furniture |
Accounting Principles |
Useful lives of property, plant and equipment | 10 years

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

X
- Definition The useful life, measured as period of time, used for property, plant and equipment. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2020-01-01 -Paragraph 73 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2020-en-r&anchor=para_73_c&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_UsefulLifeMeasuredAsPeriodOfTimePropertyPlantAndEquipment
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_BuildingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_FixturesAndFittingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_NetworkInfrastructureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=iva_EquipmentAndToolingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=iva_GeneralFacilitiesMiscellaneousFixturesAndFittingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_OfficeEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=ifrs-full_ComputerEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=iva_FurnitureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |