Disclosure Of Earnings Per Share [Text Block]
| Concept | 2024-01-01 to 2024-12-31 | 2023-01-01 to 2023-12-31 | 
|---|---|---|
| Disclosure of earnings per share [text block] | — | — | 
| Earnings per share [text block] | — | — | 
| Earnings per share [abstract] | ||
| Earnings per share [line items] | ||
| Basic earnings per share [abstract] | ||
| Basic earnings (loss) per share | 
                                                66.00
                                                
                                             | 
                                                320.00
                                                
                                             | 
| Diluted earnings per share [abstract] | ||
| Diluted earnings (loss) per share | 
                                                66.00
                                                
                                             | 
                                                320.00
                                                
                                             | 
| Adjustments to reconcile profit (loss) to numerator used in calculating earnings per share [abstract] | ||
| Profit (loss), attributable to owners of parent | 
                                                264,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                1,270,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
| Participating equity instruments other than ordinary shares [abstract] | ||
| Earnings (loss) per instrument, participating equity instruments other than ordinary shares [abstract] | ||
| Basic earnings (loss) per instrument, participating equity instruments other than ordinary shares | 
                                                68.00
                                                
                                             | 
                                                322.00
                                                
                                             | 
| Diluted earnings (loss) per instrument, participating equity instruments other than ordinary shares | 
                                                68.00
                                                
                                             | 
                                                322.00
                                                
                                             | 
| Disclosure of depositary receipts [text block] | — | — | 
| Disclosure of depositary receipts [abstract] | ||
| Disclosure of depositary receipts [line items] |