v3.24.4
Loans and Borrowings - Reconciliation of Financial Liabilities (Details)
€ in Thousands, $ in Thousands
 12 Months Ended
Sep. 30, 2024
EUR (€)
Sep. 30, 2024
USD ($)
Sep. 30, 2023
EUR (€)
Sep. 30, 2023
USD ($)
Sep. 30, 2022
EUR (€)
Disclosure of reconciliation of liabilities arising from financing activities [line items]          
Beginning balance € 1,853,038   € 1,966,240    
Changes from financing cash flows          
Proceeds from loans and borrowings 634,524        
Repayment of loans and borrowings (1,296,032)   (52,782)   € (9,516)
Interest (paid)/received (90,765)   (111,986)    
Payment of capitalized transaction cost (3,955)        
Total increase (decrease) in liabilities arising from financing activities (756,228)   (164,768)    
The effect of changes in foreign exchange rates (14,668)   (69,860)    
Interest expense 86,215   117,564    
Amortization of capitalized transaction cost 26,528   3,862    
Capitalized transaction cost not yet paid (250)        
Ending balance 1,194,635   1,853,038   1,966,240
Original EUR Term Loan          
Disclosure of reconciliation of liabilities arising from financing activities [line items]          
Beginning balance 379,197   379,750    
Changes from financing cash flows          
Repayment of loans and borrowings (375,000)        
Interest (paid)/received (26,140)   (21,295)    
Total increase (decrease) in liabilities arising from financing activities (401,140)   (21,295)    
Interest expense 21,943   20,742    
Ending balance     379,197   379,750
New EUR Term Loan          
Changes from financing cash flows          
Proceeds from loans and borrowings 375,000        
Total increase (decrease) in liabilities arising from financing activities 375,000        
Interest expense 3,591        
Ending balance 378,591        
Original USD Term Loan          
Disclosure of reconciliation of liabilities arising from financing activities [line items]          
Beginning balance | $   $ 748,444   $ 879,579  
Changes from financing cash flows          
Repayment of loans and borrowings | $   (730,836)   (52,782)  
Interest (paid)/received | $   (37,391)   (68,195)  
Total increase (decrease) in liabilities arising from financing activities | $   (768,227)   (120,977)  
The effect of changes in foreign exchange rates | $   (6,573)   (71,711)  
Interest expense | $   26,356   61,553  
Ending balance | $       $ 748,444  
New USD Term Loan          
Changes from financing cash flows          
Proceeds from loans and borrowings | $   259,524      
Repayment of loans and borrowings | $   (90,196)      
Interest (paid)/received | $   (2,689)      
Total increase (decrease) in liabilities arising from financing activities | $   166,639      
The effect of changes in foreign exchange rates | $   (8,573)      
Interest expense | $   2,707      
Ending balance | $   $ 160,773      
Vendor Loan          
Disclosure of reconciliation of liabilities arising from financing activities [line items]          
Beginning balance 305,048   292,275    
Changes from financing cash flows          
Repayment of loans and borrowings (100,000)        
Interest (paid)/received (2,049)        
Total increase (decrease) in liabilities arising from financing activities (102,049)        
Interest expense 9,122   12,773    
Ending balance 212,121   305,048   292,275
Senior Notes          
Disclosure of reconciliation of liabilities arising from financing activities [line items]          
Beginning balance 437,873   437,873    
Changes from financing cash flows          
Interest (paid)/received (22,496)   (22,496)    
Total increase (decrease) in liabilities arising from financing activities (22,496)   (22,496)    
Interest expense 22,496   22,496    
Ending balance 437,873   437,873   437,873
Amortized Transaction Costs of Loans and Borrowings          
Disclosure of reconciliation of liabilities arising from financing activities [line items]          
Beginning balance (17,524)   (23,237)    
Changes from financing cash flows          
Payment of capitalized transaction cost (3,955)        
Total increase (decrease) in liabilities arising from financing activities (3,955)        
The effect of changes in foreign exchange rates 478   1,851    
Amortization of capitalized transaction cost 26,528   3,862    
Capitalized transaction cost not yet paid (250)        
Ending balance 5,277   (17,524)   (23,237)
Amortized Transaction Costs of RCF          
Disclosure of reconciliation of liabilities arising from financing activities [line items]          
Beginning balance (1,826)   (2,533)    
Changes from financing cash flows          
Payment of capitalized transaction cost (1,508)        
Total increase (decrease) in liabilities arising from financing activities (1,508)        
Amortization of capitalized transaction cost 1,881   707    
Ending balance (1,453)   (1,826)   € (2,533)
Interest Cap          
Disclosure of reconciliation of liabilities arising from financing activities [line items]          
Beginning balance (2,913)        
Changes from financing cash flows          
Interest (paid)/received 1,359        
Total increase (decrease) in liabilities arising from financing activities 1,359        
Changes in fair value 2,767   (2,913)    
Interest expense (1,359)        
Ending balance € (146)   € (2,913)