Financial risk management - Currency risk (Details) - Currency risk - EUR (€) € in Thousands	Mar. 31, 2022	Dec. 31, 2021
USD
Currency risk
Net exposure	€ (20,418)	€ 2,241
USD \| Trade receivables and other assets
Currency risk
Net exposure	3,849	4,635
USD \| Trade payables and other liabilities
Currency risk
Net exposure	(2,377)	(2,394)
USD \| Financial liabilities
Currency risk
Net exposure	(21,890)
INR
Currency risk
Net exposure	13	4
INR \| Trade receivables and other assets
Currency risk
Net exposure	€ 13	8
INR \| Trade payables and other liabilities
Currency risk
Net exposure		€ (4)

The amount of risk exposure associated with financial instruments with a shared characteristic that identifies a concentration of risks. [Refer: Financial instruments, class [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2021-01-01
-Paragraph B8
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_B8_c&doctype=Appendix&subtype=B
-URIDate 2021-03-24

Name:	ifrs-full_RiskExposureAssociatedWithInstrumentsSharingCharacteristic
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant