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] | — | — | 
| Adjustments to reconcile profit (loss) to numerator used in calculating earnings per share [abstract] | ||
| Profit (loss), attributable to owners of parent | 
                                        
                                             
                                                2,919,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                3,095,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             
                                        
                                     |