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v3.25.1

Right-of-use assets and lease liabilities (Details 1) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Right-of-use Assets And Lease Liabilities |  |  |
Balance at the beginning of the year | $ 77,405 | $ 27,205 |
New contracts | 64,955 | 68,428 |
Disposals and write-offs | (4,853) | (6,790) |
Payments of lease liabilities | (32,056) | (15,170) | $ (19,424)
Interest paid on lease liabilities | (11,645) | (6,086) | (1,543)
Remeasurement | 144 | 1,105 |
Interest accrued | 13,517 | 6,132 |
Foreign exchange effect | (11,568) | 2,581 |
Balance at the end of the year | 95,899 | 77,405 | $ 27,205
Current liabilities | 32,747 | 21,678 |
Non-current liabilities | $ 63,152 | $ 55,727 |

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

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- 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

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- 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

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- 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

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- 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