Fair Value Measurement - Schedule of Fair Value and Fair Value Hierarchy of Tax Receivable Liability Carried at Amortized Cost (Details) - EUR (€) |
Sep. 30, 2024 |
Sep. 30, 2023 |
|---|---|---|
| Disclosure of fair value measurement of liabilities [line items] | ||
| Tax receivable agreement liability | € 344,590,000 | € 0 |
| Fair Value | Level 3 | ||
| Disclosure of fair value measurement of liabilities [line items] | ||
| Tax receivable agreement liability | 382,619,000 | |
| Carrying Value | Level 3 | ||
| Disclosure of fair value measurement of liabilities [line items] | ||
| Tax receivable agreement liability | € 359,890,000 |