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Loans and financings (Details 1) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Loans And Financings |  |
Balance at the beginning of the year | $ 1,725,566 | $ 1,669,259
New loans and financings | 799,439 | 56,408
Debt issue costs | (7,577) | (74)
Interest accrual | 130,896 | 112,612
Amortization of debt issue costs | 6,182 | 2,362
Changes in fair value of loans and financings | 3,627 | 525
Changes in fair value of financing liabilities related to changes in the Company's own credit risk | 1,572 | 583
Debt modification gain | (3,142) |
Payments of loans and financings | (681,475) | (27,087)
Foreign exchange effects | (84,387) | 23,996
Interest paid on loans and financings | (128,068) | (113,018)
Balance at the end of the year | $ 1,762,633 | $ 1,725,566

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- Definition The amount of outstanding funds that the entity is obligated to repay. + References 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

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- Definition The element represents amortization of debt issue costs of borrowings. + References No definition available. + Details
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Namespace Prefix: | nexa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The element represents decrease through payment of interest borrowings. + References No definition available. + Details
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Namespace Prefix: | nexa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The element represents decrease through payments of borrowings. + References No definition available. + Details
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Namespace Prefix: | nexa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | nexa_
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Period Type: | duration

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- Definition The element represents increase decrease through changes in company s credit risk of financial liability. + References No definition available. + Details
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Namespace Prefix: | nexa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The element represents debt modification gain. + References No definition available. + Details
Name: | nexa_IncreaseDecreaseThroughDebtModificationGain
Namespace Prefix: | nexa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The element represents increase decrease through fair value of loans and financings. + References No definition available. + Details
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Namespace Prefix: | nexa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The element represents increase decrease through financing costs borrowings. + References No definition available. + Details
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Namespace Prefix: | nexa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The element represents increase decrease through net exchange differences borrowings. + References No definition available. + Details
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Namespace Prefix: | nexa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The element represents increase through accrual of interest borrowings. + References No definition available. + Details
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Namespace Prefix: | nexa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The element represents increase through new borrowings. + References No definition available. + Details
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Namespace Prefix: | nexa_
Data Type: | xbrli:monetaryItemType
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Period Type: | duration