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v3.26.1

Right-of-use assets and lease liabilities (Details 1) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Right-of-use Assets And Lease Liabilities |  |  |
Balance at the beginning of the year | $ 95,899 | $ 77,405 |
New contracts | 50,011 | 64,955 |
Disposals and write-offs |  | (4,853) |
Payments of lease liabilities | (43,616) | (32,056) | $ (15,170)
Contract renegotiation | 7,919 |  |
Interest paid on lease liabilities | (9,807) | (11,645) | (6,086)
Remeasurement | 4,285 | 144 |
Interest accrued | 9,989 | 13,517 |
Foreign exchange effect | 2,709 | (11,568) |
Effect of new subsidiary acquisition | 3,745 |  |
Balance at the end of the year | 121,134 | 95,899 | $ 77,405
Current liabilities | 45,516 | 32,747 |
Non-current liabilities | $ 75,618 | $ 63,152 |

X
- Definition The amount of current lease liabilities. [Refer: Lease liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2024-01-01 -Paragraph 47 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_47_b&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_CurrentLeaseLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of non-current lease liabilities. [Refer: Lease liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2024-01-01 -Paragraph 47 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_47_b&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_NoncurrentLeaseLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The cash outflow for payment of lease liabilities, classified as financing activities. [Refer: Lease liabilities] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2024-01-01 -Paragraph 17 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_17_e&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The element represents additions to lease liabilities. + References No definition available. + Details
Name: | nexa_AdditionsToLeaseLiabilities
Namespace Prefix: | nexa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The anount of contract renegotiation. + References No definition available. + Details
Name: | nexa_ContractRenegotiation
Namespace Prefix: | nexa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | nexa_DisclosureRightofuseAssetsAndLeaseLiabilitiesAbstract
Namespace Prefix: | nexa_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The decrease in leasing liabilities resulting from disposals and retirements. + References No definition available. + Details
Name: | nexa_DisposalsAndWriteoffsToLeaseLiabilities
Namespace Prefix: | nexa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount represents to the effects of new subsidiary acquisition. + References No definition available. + Details
Name: | nexa_EffectOfNewSubsidiaryAcquisition
Namespace Prefix: | nexa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The element represents foreign exchange effect lease liabilities. + References No definition available. + Details
Name: | nexa_ForeignExchangeEffectLeaseLiabilities
Namespace Prefix: | nexa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of interest expense on lease liabilities. + References No definition available. + Details
Name: | nexa_InterestExpensesOnLeaseLiabilities
Namespace Prefix: | nexa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The element represents interest paid on lease liabilities. + References No definition available. + Details
Name: | nexa_InterestPaidOnLeaseLiabilities
Namespace Prefix: | nexa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- 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 No definition available. + Details
Name: | nexa_LeasesLiabilities
Namespace Prefix: | nexa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of remeasurement on lease liabilities. + References No definition available. + Details
Name: | nexa_Remeasurement
Namespace Prefix: | nexa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration