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Current and deferred income tax (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current And Deferred Income Tax
Balance at beginning of the year	$ 68,667	$ (24,886)	$ (37,277)
Effect on income (loss) for the year	90,118	85,209	(248)
Effect on other comprehensive loss - Fair value adjustment	981	(1,269)	998
Effect on other comprehensive income , hedge accounting	535	198	(178)
Effect on other comprehensive income - Translation effect included in cumulative translation adjustment	(50,565)	9,415	8,481
Derecognition of Nexa's share of Enercan's deferred income taxes			3,338
Divestments	(3,348)
Others	(2,036)
Balance at the end of the year	$ 104,352	$ 68,667	$ (24,886)

X

- Definition

The amount of tax expense or income relating to changes in deferred tax liabilities and deferred tax assets, recognised in profit or loss. [Refer: Deferred tax assets; Deferred tax expense (income); Deferred tax liabilities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2024-01-01
-Paragraph 81
-Subparagraph g
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81_g_ii&doctype=Standard
-URIDate 2024-03-27

+ Details

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Namespace Prefix:	ifrs-full_
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Balance Type:	na
Period Type:	duration

X

- Definition

The amount of deferred tax liabilities or assets. [Refer: Deferred tax liabilities; Deferred tax assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2024-01-01
-Paragraph 81
-Subparagraph g
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81_g_i&doctype=Standard
-URIDate 2024-03-27

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of income tax relating to amounts recognised in other comprehensive income. [Refer: Other comprehensive income]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 90
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_90&doctype=Standard
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2024-01-01
-Paragraph 81
-Subparagraph ab
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81_ab&doctype=Standard
-URIDate 2024-03-27

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Namespace Prefix:	ifrs-full_
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Balance Type:	na
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X

- Definition

The amount of deferred taxa relating to divestments in some mining operations.

+ References

No definition available.

+ Details

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

X

- Definition

The amount of deferred tax relating to others.

+ References

No definition available.

+ Details

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

X

- Definition

The amount of derecognition of Nexa's share of Enercan's deferred income taxes.

+ References

No definition available.

+ Details

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

X

- References

No definition available.

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Data Type:	xbrli:stringItemType
Balance Type:	na
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X

- Definition

The amount of income tax relating to amounts recognised in other comprehensive income.

+ References

No definition available.

+ Details

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

X

- Definition

The amount of income tax relating to amounts recognised in other comprehensive income.

+ References

No definition available.

+ Details

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