Revenue from Contracts with Customers - Summary of Disaggregation of Revenue by Sales Channels (Details) - EUR (€) € in Thousands |
12 Months Ended | ||
|---|---|---|---|
Sep. 30, 2025 |
Sep. 30, 2024 |
Sep. 30, 2023 |
|
| Disclosure of disaggregation of revenue from contracts with customers [line items] | |||
| Revenue | € 2,097,429 | € 1,804,690 | € 1,491,911 |
| B2B | |||
| Disclosure of disaggregation of revenue from contracts with customers [line items] | |||
| Revenue | 1,297,933 | 1,083,721 | 887,957 |
| DTC | |||
| Disclosure of disaggregation of revenue from contracts with customers [line items] | |||
| Revenue | 794,797 | 716,687 | 598,664 |
| Other | |||
| Disclosure of disaggregation of revenue from contracts with customers [line items] | |||
| Revenue | € 4,699 | € 4,282 | € 5,290 |