Other financial instruments (Details 2) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
IfrsStatementLineItems [Line Items]
Cost of sales	$ (33,063)	$ 14,988
Net revenues	31,140	(483)
Other income and expenses, net	746	(1,385)
Other comprehensive (loss) income	(872)	732
Realized (loss) gain	4,762	13,271
Net financial results	1,371	$ (606)
Hedging Programs For Mismatches Of Quotation Periods [Member] \| Zinc Forward [Member]
IfrsStatementLineItems [Line Items]
Cost of sales	(33,063)
Net revenues	27,514
Other income and expenses, net	746
Other comprehensive (loss) income	(872)
Realized (loss) gain	10,299
Hedging Programs For Sales Of Zinc At Fixed Price [Member] \| Zinc Forward [Member]
IfrsStatementLineItems [Line Items]
Net revenues	3,626
Realized (loss) gain	(4,449)
Hedging Programs For Interest Rate Risk ICPA [Member] \| Zinc Forward [Member]
IfrsStatementLineItems [Line Items]
Realized (loss) gain	148
Net financial results	135
Hedging Programs For Interest Rate Risk EUR [Member] \| Zinc Forward [Member]
IfrsStatementLineItems [Line Items]
Realized (loss) gain	(1,236)
Net financial results	$ 1,236

No definition available.

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

The element represents cost of sales on derivative instrument.

No definition available.

Name:	nexa_InventoryOnDerivativeInstrument
Namespace Prefix:	nexa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The element represents net financial results on derivative instrument.

No definition available.

Name:	nexa_NetFinancialResultsOnDerivativeInstrument
Namespace Prefix:	nexa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The element represents net revenues on derivative instrument.

No definition available.

Name:	nexa_NetRevenuesOnDerivativeInstrument
Namespace Prefix:	nexa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The element represents other comprehensive income or loss on derivative instrument.

No definition available.

Name:	nexa_OtherComprehensiveIncomeOrLossOnDerivativeInstrument
Namespace Prefix:	nexa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The element represents other income and expenses on derivative instrument.

No definition available.

Name:	nexa_OtherIncomeAndExpensesOnDerivativeInstrument
Namespace Prefix:	nexa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The element represents realized gain loss on derivative instruments.

No definition available.

Name:	nexa_RealizedGainLossOnDerivativeInstruments
Namespace Prefix:	nexa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Name:	nexa_HedgingProgramsAxis=nexa_HedgingProgramsForMismatchesOfQuotationPeriodsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_HedgingInstrumentsAxis=nexa_ZincForwardMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	nexa_HedgingProgramsAxis=nexa_HedgingProgramsForSalesOfZincAtFixedPriceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	nexa_HedgingProgramsAxis=nexa_HedgingProgramsForInterestRateRiskICPAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	nexa_HedgingProgramsAxis=nexa_HedgingProgramsForInterestRateRiskEURMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: