Operating Expenses - Additional Information (Details) - Selling and Distribution Expenses - EUR (€) € in Millions	3 Months Ended	9 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Disclosure of attribution of expenses by nature to their function [line items]
Selling and marketing expenses	€ 58.9	€ 50.3	€ 131.2	€ 110.6
Logistics expenses	€ 44.1	€ 48.7	€ 110.2	€ 114.0

The amount of expense relating to the marketing and selling of goods or services.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 85
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_85&doctype=Standard
-URIDate 2024-03-27

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration