Statement Of Cash Flows [Abstract]
| Concept | 2024-01-01 to 2024-12-31 | As at 2024-12-31 | 2024-01-01 to 2024-12-31 | 2023-01-01 to 2023-12-31 | As at 2023-12-31 | 2023-01-01 to 2023-12-31 | As at 2022-12-31 | 
|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||||
| Cash flows from (used in) operating activities [abstract] | |||||||
| Profit (loss) | 
                                                163,236
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                163,236
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                179,068
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                179,068
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
| Adjustments to reconcile profit (loss) [abstract] | |||||||
| Adjustments for income tax expense | 
                                                23,617
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                27,204
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
| Adjustments for provisions | 
                                                4,075
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                25,446
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
| Adjustments for undistributed profits of associates | 
                                                78,913
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                90,432
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
| Other adjustments for non-cash items | 
                                                12,314
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                257,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
| Dividends received, classified as operating activities | 
                                                3,671
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                3,484
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
| Interest paid, classified as operating activities | 
                                                154,733
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                82,689
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
| Interest received, classified as operating activities | 
                                                405,926
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                358,519
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
| Income taxes paid (refund), classified as operating activities | 
                                                35,757
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                21,700
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
| Cash flows from (used in) operating activities | 
                                                414,398
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                226,375
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
| Cash flows from (used in) investing activities [abstract] | |||||||
| Proceeds from sales of property, plant and equipment, classified as investing activities | 
                                                163,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                236,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
| Cash flows from (used in) investing activities | 
                                                53,255
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                112,422
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
| Cash flows from (used in) financing activities [abstract] | |||||||
| Proceeds from issuing other equity instruments | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                -
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
| Payments of other equity instruments | 
                                                3,971
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                3,971
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
| Payments of lease liabilities, classified as financing activities | 
                                                3,029
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                2,922
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
| Dividends paid, classified as financing activities | 
                                                15,996
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                10,612
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
| Cash flows from (used in) financing activities | 
                                                32,012
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                61,688
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||||
| Effect of exchange rate changes on cash and cash equivalents | 
                                                302,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                94,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
| Cash and cash equivalents | — | 
                                                998,576
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                605,120
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                882,136
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             |