Disclosure Of Interests In Other Entities [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 | As at 2022-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Disclosure of interests in other entities [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disclosure of interests in subsidiaries [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disclosure of subsidiaries [text block] | — | — | — | — | — | — | — | — | 
                                                Note 5 – Acquisitions and other changes in the consolidation scope
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disclosure of subsidiaries [abstract] | ||||||||||||||||||||||||
| Disclosure of subsidiaries [line items] | ||||||||||||||||||||||||
| Profit (loss), attributable to non-controlling interests | — | — | — | — | — | — | — | — | 
                                                80,884,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
                                                153,339,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | 
| Non-controlling interests | — | — | — | — | — | — | — | — | — | — | — | 
                                                238,444,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                271,260,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
| Current assets | — | — | — | — | — | — | — | — | — | — | — | 
                                                857,362,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                1,144,047,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
| Non-current assets | — | — | — | — | — | — | — | — | — | — | — | 
                                                4,141,478,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                5,184,598,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
| Current liabilities | — | — | — | — | — | — | — | — | — | — | — | 
                                                917,626,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                799,328,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
| Non-current liabilities | — | — | — | — | — | — | — | — | — | — | — | 
                                                3,467,115,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                6,300,131,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
| Revenue | — | — | — | — | — | — | — | — | 
                                                392,191,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
                                                445,077,000
                                                
                                                    
                                                        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
                                                    
                                                
                                             | — | 
| Comprehensive income | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                884,760,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                11,644,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                873,604,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                80,378,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                804,382,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                488,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                1,826,683,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                1,674,903,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                758,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                151,780,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                1,656,495,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                5,468,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                12,182,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
| Disclosure of interests in associates [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disclosure of associates [text block] | — | — | — | — | — | — | — | — | 
                                                Note 8 – Investments accounted under the equity method
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disclosure of associates [abstract] | ||||||||||||||||||||||||
| Disclosure of associates [line items] | ||||||||||||||||||||||||
| Other comprehensive income | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                11,156,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                11,644,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                506,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                11,662,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                488,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                16,849,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                18,408,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                758,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                1,559,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                5,468,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                12,182,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
| Investments accounted for using equity method | — | — | — | — | — | — | — | — | — | — | — | 
                                                502,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                1,534,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
| Disclosure of interests in joint arrangements [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disclosure of joint ventures [text block] | — | — | — | — | — | — | — | — | 
                                                Investments in joint ventures
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
| Disclosure of joint ventures [abstract] | ||||||||||||||||||||||||
| Disclosure of joint ventures [line items] | ||||||||||||||||||||||||
| Cash and cash equivalents | — | — | — | — | — | — | — | — | — | — | — | 
                                                246,990,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                377,419,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | 
                                                386,985,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
| Other current financial liabilities | — | — | — | — | — | — | — | — | — | — | — | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                1,535,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
| Other non-current financial liabilities | — | — | — | — | — | — | — | — | — | — | — | 
                                                9,092,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                164,347,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
| Tax expense (income) | — | — | — | — | — | — | — | — | 
                                                2,749,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
                                                156,124,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — |