Disclosure Of Revenue From Contracts With Customers [Text Block]
| Concept | 
                                    
                                        As at 2024-12-31  | 
                            
                                
                                    
                                        2024-01-01 to 2024-12-31  | 
                            
                                
                                    
                                        As at 2023-12-31  | 
                            
                                
                                    
                                        2023-01-01 to 2023-12-31  | 
                            
                        
|---|---|---|---|---|
| Disclosure of revenue from contracts with customers [text block] | — | 
                                        
                                             
                                                8
                                                
                                             
                                        
                                     | 
                                
                                    — | — | 
| Contract assets [abstract] | ||||
| Non-current contract assets | 
                                        
                                             
                                                7,045,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                6,315,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | 
| Contract liabilities [abstract] | ||||
| Current contract liabilities | 
                                        
                                             
                                                24,562,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                24,096,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | 
| Receivables from contracts with customers [abstract] | ||||
| Non-current receivables from contracts with customers | 
                                        
                                             
                                                24,518,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                24,525,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | 
| Disclosure of assets recognised from costs to obtain or fulfil contracts with customers [text block] | — | — | — | — | 
| Disclosure of assets recognised from costs to obtain or fulfil contracts with customers [abstract] | ||||
| Disclosure of assets recognised from costs to obtain or fulfil contracts with customers [line items] | ||||
| Assets recognised from costs to obtain or fulfil contracts with customers | 
                                        
                                             
                                                50,456,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                61,118,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | 
| Amortisation, assets recognised from costs incurred to obtain or fulfil contracts with customers | — | 
                                        
                                             
                                                14,561,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    — | 
                                        
                                             
                                                16,007,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             
                                        
                                     |