Profit Or Loss [Abstract]
| Concept | 2024-01-01 to 2024-12-31 | 2023-01-01 to 2023-12-31 | 2022-01-01 to 2022-12-31 | 
|---|---|---|---|
| Profit or loss [abstract] | |||
| Profit (loss) [abstract] | |||
| Revenue | 
                                                18,021,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                18,169,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                17,827,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
| Cost of sales | 
                                                10,248,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                10,721,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                10,633,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
| Gross profit | 
                                                7,773,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                7,448,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                7,194,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
| Other income | 
                                                590,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                112,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                127,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
| Other expense, by function | 
                                                1,019,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                645,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                109,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
| Profit (loss) from operating activities | 
                                                529,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                115,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                1,529,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
| Finance income | 
                                                105,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                63,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                58,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
| Finance costs | 
                                                387,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                376,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                258,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
| Profit (loss) before tax | 
                                                123,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                526,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                1,731,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
| Tax expense (income) | 
                                                963,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                73,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                113,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
| Profit (loss) from continuing operations | 
                                                840,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                454,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                1,618,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
| Profit (loss) from discontinued operations | 
                                                142,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                10,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                13,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
| Profit (loss) | 
                                                698,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                463,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                1,605,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
| Profit (loss), attributable to [abstract] | |||
| Profit (loss), attributable to owners of parent | 
                                                702,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                466,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                1,608,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
| Profit (loss), attributable to non-controlling interests | 
                                                3,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                2,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                3,000,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
| Earnings per share [text block] | — | — | — | 
| Earnings per share [abstract] | |||
| Earnings per share [line items] | |||
| Basic earnings per share [abstract] | |||
| Basic earnings (loss) per share from continuing operations | 
                                                0.90
                                                
                                             | 
                                                0.48
                                                
                                             | 
                                                1.70
                                                
                                             | 
| Basic earnings (loss) per share | 
                                                0.75
                                                
                                             | 
                                                0.49
                                                
                                             | 
                                                1.69
                                                
                                             | 
| Diluted earnings per share [abstract] | |||
| Diluted earnings (loss) per share from continuing operations | 
                                                0.90
                                                
                                             | 
                                                0.48
                                                
                                             | 
                                                1.70
                                                
                                             | 
| Diluted earnings (loss) per share | 
                                                0.75
                                                
                                             | 
                                                0.49
                                                
                                             | 
                                                1.69
                                                
                                             |