Material accounting policies - Basis of preparation (Details) - EUR (€) € in Thousands	12 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Material Accounting Policies [Abstract]
Interest paid	€ 59,028	€ 17,137	€ 21,070
Interest received	€ 3,550	€ 1,099	€ 246

The cash inflow from interest received, classified as investing activities.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 7
-IssueDate 2023-01-01
-Paragraph 31
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2023-en-r&anchor=para_31&doctype=Standard
-URIDate 2023-03-23

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