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Basis of preparation and statement of compliance - Significant Investments In Subsidiaries (Details) € in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2024 EUR (€) entity | Dec. 31, 2023
General principles and statement of compliance |  |
Number of entities being consolidated | entity | 2 |
Hepalys Pharma, Inc |  |
General principles and statement of compliance |  |
Proportion of ownership interest | 14.64% | 15.00%
Inventiva Inc. |  |
General principles and statement of compliance |  |
Percent of ownership interest | 100.00% |
Non-controlling interest | € | € 0 |

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- Definition The amount of equity in a subsidiary not attributable, directly or indirectly, to a parent. [Refer: Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2023-01-01 -Paragraph 12 -Subparagraph f -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2023-en-r&anchor=para_12_f&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 10 -IssueDate 2023-01-01 -Paragraph 22 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=10&code=ifrs-tx-2023-en-r&anchor=para_22&doctype=Standard -URIDate 2023-03-23 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 54 -Subparagraph q -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_54_q&doctype=Standard -URIDate 2023-03-23 + Details
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