Disclosure Of Cash Flow Statement [Text Block]
| Concept | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | As at 2023-12-31 | As at 2022-12-31 | 
|---|---|---|---|---|
| Disclosure of cash flow statement [text block] | — | 
                                                Retraitement du tableau des flux de trésorerie de l’exercice clos le 31décembre 2023
                                                
                                             | — | — | 
| Description of accounting policy for determining components of cash and cash equivalents [text block] | — | 
                                                La trésorerie correspond aux disponibilités en banque ainsi qu’aux dépôts à vue.
                                                
                                             | — | — | 
| Cash and cash equivalents if different from statement of financial position [abstract] | ||||
| Cash and cash equivalents | 
                                                30,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                133,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                167,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             |