Right of use assets and lease liabilities - Lease liabilities split (Details) - EUR (€) € in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Lease liabilities [Line items]
Non-current lease liabilities	€ 2,586	€ 2,737
Current lease liabilities	719	582
Total	3,530	3,591
Consolidated Entity [Member]
Lease liabilities [Line items]
Non-current lease liabilities	2,586	2,737
Current lease liabilities	719	582
Total	€ 3,305	€ 3,319	€ 3,317

The amount of current lease liabilities. [Refer: Lease liabilities]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2022-03-24
-Paragraph 47
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2022-en-r&anchor=para_47_b&doctype=Standard
-URIDate 2022-03-24

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of non-current lease liabilities. [Refer: Lease liabilities]

+ References

+ Details

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

- References

No definition available.

+ Details

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Namespace Prefix:	nyxh_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

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