Corporate Information And Statement Of Ifrs Compliance [Abstract]
| Concept | 
                                    
                                        2024-01-01 to 2024-12-31  | 
                            
                        
|---|---|
| Corporate information and statement of IFRS compliance [abstract] | |
| Name of reporting entity or other means of identification | 
                                        
                                             | 
                                
                            
| Legal form of entity | 
                                        
                                             | 
                                
                            
| Country of incorporation | 
                                        
                                             | 
                                
                            
| Address of entity's registered office | 
                                        
                                             
                                                Warandeberg 3, 1000 Brussels
                                                
                                             
                                        
                                     | 
                                
                            
| Description of nature of entity's operations and principal activities | 
                                        
                                             
                                                Belgium
                                                
                                             
                                        
                                     | 
                                
                            
| Name of parent entity | 
                                        
                                             | 
                                
                            
| Name of ultimate parent of group | 
                                        
                                             | 
                                
                            
| Statement of IFRS compliance [text block] | 
                                        
                                             | 
                                
                            
| Disclosure of material accounting policy information [text block] | 
                                        
                                             | 
                                
                            
| Disclosure of objectives, policies and processes for managing capital [text block] | 
                                        
                                             |