Statement Of Comprehensive Income [Abstract]
| Concept | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2024-01-01 to 2024-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||
| Profit (loss) | 
                                                23,276
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                239,531
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
                                                216,255
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                216,255
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                188,569
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                20,131
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                168,438
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                168,438
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
| Other comprehensive income [abstract] | ||||||||||||||
| Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract] | ||||||||||||||
| Other comprehensive income, before tax, gains (losses) from investments in equity instruments | — | 
                                                900,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | 
                                                3,700,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | 
| Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans | — | 
                                                7,158
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | 
                                                6,737
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | 
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss [abstract] | ||||||||||||||
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss | — | 
                                                1,666
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | 
                                                1,469
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | 
| Other comprehensive income | 
                                                23,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                5,582
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                5,515
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                693,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                5,584
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                5,584
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                4,898
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                4,886
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                5,171
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                123,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                4,886
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                2,849,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
| Comprehensive income | 
                                                23,278
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                233,949
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                5,515
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                693,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                5,584
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                216,255
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                210,671
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                183,671
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                4,886
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                5,171
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                20,119
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                168,438
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                163,552
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                2,849,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
| Comprehensive income attributable to [abstract] | ||||||||||||||
| Comprehensive income, attributable to owners of parent | — | 
                                                210,671
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | 
                                                163,552
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | 
| Comprehensive income, attributable to non-controlling interests | — | 
                                                23,278
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | 
                                                20,119
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — |