Statement Of Changes In Equity [Abstract]
| Concept | As at 2024-09-30 | 2023-10-01 to 2024-09-30 | As at 2024-09-30 | As at 2024-09-30 | As at 2024-09-30 | As at 2024-09-30 | 2023-10-01 to 2024-09-30 | 2023-10-01 to 2024-09-30 | As at 2024-09-30 | As at 2024-09-30 | 2023-10-01 to 2024-09-30 | 2023-10-01 to 2024-09-30 | As at 2024-09-30 | 2023-10-01 to 2024-09-30 | 2023-10-01 to 2024-09-30 | 2023-10-01 to 2024-09-30 | As at 2024-09-30 | 2023-10-01 to 2024-09-30 | As at 2023-09-30 | 2022-10-01 to 2023-09-30 | As at 2023-09-30 | 2022-10-01 to 2023-09-30 | 2022-10-01 to 2023-09-30 | As at 2023-09-30 | As at 2023-09-30 | 2022-10-01 to 2023-09-30 | As at 2023-09-30 | As at 2023-09-30 | 2022-10-01 to 2023-09-30 | 2022-10-01 to 2023-09-30 | 2022-10-01 to 2023-09-30 | As at 2023-09-30 | 2022-10-01 to 2023-09-30 | As at 2023-09-30 | 2022-10-01 to 2023-09-30 | As at 2022-09-30 | As at 2022-09-30 | As at 2022-09-30 | As at 2022-09-30 | As at 2022-09-30 | As at 2022-09-30 | As at 2022-09-30 | As at 2022-09-30 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||||||||||||||
| Equity | 
                                                48,397
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                622,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                41,153
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                48,397
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                144,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                8,884
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                663,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                14,987
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                784,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                344,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                9,689
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                67,184
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                38,358
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
                                                37,412
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                67,184
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                10,001
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                71,793
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                43,345
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                37,412
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                54,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                663,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                428,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||||||||||||||
| Profit (loss) | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                23,371
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                23,371
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                23,371
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                1,246
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                1,246
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                1,246
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
| Other comprehensive income | — | 
                                                162,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | 
                                                200,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                38,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                162,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                66,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                290,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                356,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                357,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
| Comprehensive income | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                23,409
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 
                                                1,313
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
| Dividends recognised as distributions to owners | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
                                                3,741
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                3,741
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
| Increase (decrease) through treasury share transactions, equity | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | 
| Increase (decrease) through share-based payment transactions, equity | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                244,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                244,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | 
                                                312,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                312,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | 
| Increase (decrease) in equity | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                4,302
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                561,000
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | 
                                                3,741
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        EUR
                                                    
                                                
                                             | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |