Disclosure Of Entity's Operating Segments [Text Block]
| 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 | 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 | As at 2024-12-31 | 2023-01-01 to 2023-12-31 | As at 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 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 2023-01-01 to 2023-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Disclosure of entity's operating segments [text block] | — | — | — | — | — | — | — | — | 
                                                Note 34 – Segments reporting
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disclosure of operating segments [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disclosure of operating segments [abstract] | |||||||||||||||||||||||
| Disclosure of operating segments [line items] | |||||||||||||||||||||||
| Revenue | — | — | — | — | — | — | — | — | 
                                                392,191,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
                                                445,077,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
| Share of profit (loss) of associates and joint ventures accounted for using equity method | — | — | — | — | — | — | — | — | 
                                                1,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
                                                5,108,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
| Tax expense (income) | — | — | — | — | — | — | — | — | 
                                                2,749,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
                                                156,124,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
| Profit (loss) before tax | — | — | — | — | — | — | — | — | 
                                                789,971,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
                                                1,965,958,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
| Profit (loss) | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                873,604,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                873,604,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                80,884,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                792,720,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                1,809,834,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                1,656,495,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                153,339,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                1,656,495,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
| Assets | — | — | — | — | — | — | — | — | — | — | — | 
                                                6,887,153,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                7,716,787,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
| Investments accounted for using equity method | — | — | — | — | — | — | — | — | — | — | — | 
                                                502,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                1,534,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
| Cash flows from (used in) operating activities | — | — | — | — | — | — | — | — | 
                                                168,514,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
                                                126,559,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
| Cash flows from (used in) investing activities | — | — | — | — | — | — | — | — | 
                                                34,208,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
                                                154,574,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
| Cash flows from (used in) financing activities | — | — | — | — | — | — | — | — | 
                                                30,096,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
                                                205,524,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
| Disclosure of products and services [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disclosure of products and services [abstract] | |||||||||||||||||||||||
| Disclosure of products and services [line items] | |||||||||||||||||||||||
| Disclosure of geographical areas [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disclosure of geographical areas [abstract] | |||||||||||||||||||||||
| Disclosure of geographical areas [line items] | |||||||||||||||||||||||
| Disclosure of major customers [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disclosure of major customers [abstract] | |||||||||||||||||||||||
| Disclosure of major customers [line items] |