Leases - Additional Information (Details) - EUR (€) |
12 Months Ended | ||
|---|---|---|---|
Sep. 30, 2025 |
Sep. 30, 2024 |
Sep. 30, 2023 |
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| Presentation of leases for lessee [abstract] | |||
| Percentage of lease payments for buildings | 10.00% | ||
| Variable lease payments amount | € 0 | € 0 | € 0 |
| Short term lease payment | € 0 | € 0 | € 0 |
| X | ||||||||||
- Definition Percentage of lease payments for buildings. No definition available.
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| X | ||||||||||
- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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