Provisions - Provision for pension obligation (Details) - Provision for pension obligation - EUR (€) € in Millions	12 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Disclosure of other provisions [line items]
Provision for pension obligation at beginning of year	€ 4.5	€ 4.5	€ 4.5
Movement during the year	€ (4.5)	0.0	0.0
Provision for pension obligation at end of year		€ 4.5	€ 4.5

The amount of provisions for employee benefits. [Refer: Employee benefits expense; Provisions]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 78
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_78_d&doctype=Standard
-URIDate 2023-03-23

Name:	ifrs-full_ProvisionsForEmployeeBenefits
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant