v3.25.3
Provisions - Summary of Development of Provisions (Details) - EUR (€)
€ in Thousands
 12 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Disclosure of other provisions [line items]    
At the beginning of the period/year € 36,031 € 41,285
Additions 30,578 24,459
Utilization (22,594) (23,671)
Reversals (2,822) (4,455)
Transfer to accruals   (1,145)
Impact of foreign currency translation (442) (442)
At the end of the period/year 40,751 36,031
thereof current 36,338 31,164
thereof non-current 4,413 4,867
Personnel Obligations    
Disclosure of other provisions [line items]    
At the beginning of the period/year 25,843 17,175
Additions 25,901 22,830
Utilization (20,715) (12,243)
Reversals (2,339) (1,642)
Impact of foreign currency translation (329) (277)
At the end of the period/year 28,361 25,843
thereof current 25,467 22,908
thereof non-current 2,894 2,935
Legal    
Disclosure of other provisions [line items]    
At the beginning of the period/year 6,471 10,136
Additions 584  
Utilization 0  
Reversals (438) (2,520)
Transfer to accruals   (1,145)
At the end of the period/year 6,617 6,471
thereof current 6,617 6,471
Other    
Disclosure of other provisions [line items]    
At the beginning of the period/year 3,717 13,974
Additions 4,093 1,629
Utilization (1,879) (11,428)
Reversals (45) (293)
Impact of foreign currency translation (113) (165)
At the end of the period/year 5,773 3,717
thereof current 4,254 1,785
thereof non-current € 1,519 € 1,932