v3.25.3
Segment Information - Schedule of Non-current Assets By Geographical Location (Details) - EUR (€)
€ in Thousands
Sep. 30, 2025
Sep. 30, 2024
Disclosure of geographical areas [line items]    
Allocated non-current assets € 3,632,405 € 3,688,933
Deferred tax assets (unallocated) 11,556 117
Total non-current assets 3,666,757 3,721,659
Unallocated    
Disclosure of geographical areas [line items]    
Other financial assets 22,796 32,609
Deferred tax assets (unallocated) 11,556 117
Germany    
Disclosure of geographical areas [line items]    
Allocated non-current assets 1,844,890 1,836,281
United States    
Disclosure of geographical areas [line items]    
Allocated non-current assets 1,432,566 1,526,573
Rest of world    
Disclosure of geographical areas [line items]    
Allocated non-current assets € 354,949 € 326,079