Investments in associates and joint ventures - Investment in associates and joint ventures (Details) - EUR (€) € in Thousands	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Investments in subsidiaries, joint ventures and associates [abstract]
Investments in joint ventures accounted for using equity method	€ 2,744	€ 2,892	€ 840
Investments in associates accounted for using equity method	753	3	1,604
Investments In Associates And Joint Ventures	€ 3,497	€ 2,895	€ 2,444

The amount of investments in joint ventures accounted for using the equity method. [Refer: Joint ventures [member]; Investments accounted for using equity method]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_55&doctype=Standard
-URIDate 2020-01-01

Name:	ifrs-full_InvestmentsInJointVenturesAccountedForUsingEquityMethod
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant