Disclosure Of Revenue From Contracts With Customers [Text Block]
| Concept | As at 2024-12-31 | As at 2023-12-31 | 
|---|---|---|
| Disclosure of revenue from contracts with customers [text block] | — | — | 
| Contract liabilities [abstract] | ||
| Non-current contract liabilities | 
                                                431,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                469,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
| Current contract liabilities | 
                                                1,699,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                1,809,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             |