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v3.26.1

Loans and financings (Details 1) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Loans And Financings |  |
Balance at the beginning of the year | $ 1,762,633 | $ 1,725,566
New loans and financings | 542,414 | 799,439
Debt issue costs | (4,931) | (7,577)
Interest accrual | 137,208 | 133,730
Changes in fair value of financing liabilities related to changes in the Company's own credit risk | 328 | 1,572
Changes in fair value of loans and financings | (2,052) | 3,627
Debt modification gain |  | (3,142)
Loss on bonds repurchase | 1,905 | 3,348
Payments of loans and financings | (632,856) | (681,475)
Foreign exchange effects | 40,606 | (84,387)
Interest paid on loans and financings | (139,271) | (128,068)
Balance at the end of the year | $ 1,705,984 | $ 1,762,633

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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_
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Balance Type: | credit
Period Type: | instant

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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_
Data Type: | xbrli:stringItemType
Balance Type: | na
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
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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 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 amount represents the loss of bond repurchase. + 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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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