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Financial Instruments and Financial Risk Management - Schedule of Fair Values and Fair Value Hierarchy of Financial Instruments Carried at Fair Value on Recurring Basis (Details) - Recurring Fair Value Measurement - EUR (€) € in Thousands	Dec. 31, 2024	Sep. 30, 2024
Disclosure of detailed information about financial instruments [line items]
Derivative assets	€ 31,103	€ 40,713
Level 2 | FVtPL
Disclosure of detailed information about financial instruments [line items]
Currency derivative	1,750	8,104
Derivative liabilities	18,570	625
Level 3 | FVtPL
Disclosure of detailed information about financial instruments [line items]
Senior Note - embedded derivative	€ 29,352	€ 32,609

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+ References

No definition available.

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- Definition

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+ References

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- Definition

The amount of financial assets classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

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