The amount of outstanding funds that the entity is obligated to repay.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard
-URIDate 2024-03-27

+ Details

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

- Definition

The adjustment to the basis (reference rate) used for calculation of the interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2024-01-01
-Paragraph 7
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_7&doctype=Standard
-URIDate 2024-03-27

+ Details

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

- Definition

The interest rate on borrowings. [Refer: Borrowings]

+ References

+ Details

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

- Definition

The amount of current borrowings and current portion of non-current borrowings. [Refer: Borrowings]

+ References

+ Details

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

- Definition

The fair value, at acquisition date, of liabilities incurred (for example, a liability for contingent consideration) as consideration transferred 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 f
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_B64_f_iii&doctype=Appendix&subtype=B
-URIDate 2024-03-27

+ Details

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

- Definition

The non-current portion of non-current borrowings. [Refer: Borrowings]

+ References

+ Details

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

- Definition

The percentage of reference rate.

+ References

No definition available.

+ Details

Name:	nexa_BorrowingsPercentageOfReferenceRate
Namespace Prefix:	nexa_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The element represents current portion of long term loans and financing principal.

+ References

No definition available.

+ Details

Name:	nexa_CurrentPortionOfLongtermLoansAndFinancings
Namespace Prefix:	nexa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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

- Definition

The amount of current interest payable.

+ References

No definition available.

+ Details

Name:	nexa_InterestOnLoansAndFinancings
Namespace Prefix:	nexa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	ifrs-full_TypesOfInterestRatesAxis=ifrs-full_FixedInterestRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfInterestRatesAxis=nexa_InterbankDepositCertificateRateCdiMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_BorrowingsByNameAxis=nexa_EurobondsUSDMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_BorrowingsByNameAxis=nexa_BNDESMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfInterestRatesAxis=nexa_BrazilianSystemForClearanceAndCustodyTJLPRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfInterestRatesAxis=nexa_BrazilianSystemForClearanceAndCustodySelicRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	ifrs-full_TypesOfInterestRatesAxis=nexa_TlpIpcaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_BorrowingsByNameAxis=nexa_ExportCreditNoteMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfInterestRatesAxis=nexa_InterbankDepositCertificateRateSOFRTERMMember
Namespace Prefix:
Data Type:	na
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Name:	ifrs-full_TypesOfInterestRatesAxis=nexa_InterbankDepositCertificateRateSOFRMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	ifrs-full_BorrowingsByNameAxis=nexa_DebenturesMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	ifrs-full_BorrowingsByNameAxis=nexa_OtherBorrowingsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Loans and financings (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
IfrsStatementLineItems [Line Items]
Current	$ 55,415	$ 50,883
Non-current	1,650,569	1,711,750
Total borrowings	1,705,984	1,762,633	$ 1,725,566
Fair value	1,868,430	1,752,615
Current portion of long-term loans and financings (principal)	28,183
Interest on loans and financings	27,232
Fixed interest rate [member]
IfrsStatementLineItems [Line Items]
Current	18,969
Non-current	1,202,602
Total borrowings	1,221,571	1,231,129
Interbank Deposit Certificate Rate Cdi [Member]
IfrsStatementLineItems [Line Items]
Current	4,595
Non-current	117,529
Total borrowings	122,124	107,310
Eurobonds USD [Member]
IfrsStatementLineItems [Line Items]
Current	18,969
Non-current	1,202,602
Total borrowings	1,221,571	1,231,129
Fair value	$ 1,394,529	1,247,522
Eurobonds USD [Member] \| Fixed interest rate [member]
IfrsStatementLineItems [Line Items]
Interest rate	6.67%
BNDES [Member]
IfrsStatementLineItems [Line Items]
Current	$ 28,290
Non-current	147,069
Total borrowings	175,359	177,397
Fair value	$ 164,974	156,565
BNDES [Member] \| Brazilian System For Clearance And Custody TJLP Rate [Member]
IfrsStatementLineItems [Line Items]
Adjustment to interest rate	2.82%
BNDES [Member] \| Brazilian System For Clearance And Custody Selic Rate [Member]
IfrsStatementLineItems [Line Items]
Adjustment to interest rate	3.10%
BNDES [Member] \| TLP - IPCA [Member]
IfrsStatementLineItems [Line Items]
Adjustment to interest rate	5.89%
Export Credit Note [Member]
IfrsStatementLineItems [Line Items]
Current	$ 937
Non-current	121,211
Total borrowings	122,148	184,135
Fair value	$ 123,799	184,737
Export Credit Note [Member] \| Interbank Deposit Certificate Rate SOFR TERM [Member]
IfrsStatementLineItems [Line Items]
Percentage of reference rate	2.50%
Export Credit Note [Member] \| Interbank Deposit Certificate Rate SOFR [Member]
IfrsStatementLineItems [Line Items]
Percentage of reference rate	2.40%
Debentures [Member]
IfrsStatementLineItems [Line Items]
Current	$ 4,595
Non-current	117,529
Total borrowings	122,124	107,310
Fair value	$ 123,185	105,012
Debentures [Member] \| Interbank Deposit Certificate Rate Cdi [Member]
IfrsStatementLineItems [Line Items]
Percentage of reference rate	1.50%
Other Borrowings [Member]
IfrsStatementLineItems [Line Items]
Current	$ 2,624
Non-current	62,158
Total borrowings	64,782	62,662
Fair value	$ 61,943	$ 58,779