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General information (Details Narrative)	Dec. 31, 2025
General Information
Percentage of equity interest	64.68%

X

- Definition

The percentage of voting equity interests acquired in a business combination. [Refer: Total for all business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2024-01-01
-Paragraph B64
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_B64_c&doctype=Appendix&subtype=B
-URIDate 2024-03-27

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	dtr-2022:percentItemType
Balance Type:	na
Period Type:	instant

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- References

No definition available.

+ Details

Name:	nexa_DisclosureGeneralInformationAbstract
Namespace Prefix:	nexa_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration