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Expenses by nature (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
IfrsStatementLineItems [Line Items]
Raw materials and consumables used	$ (1,187,542)	$ (1,228,138)	$ (1,421,712)
Third-party services	(574,309)	(626,207)	(579,476)
Depreciation and amortization	(330,198)	(310,475)	(288,272)
Employee benefit expenses	(279,280)	(271,589)	(258,269)
Others	(52,385)	(64,159)	(90,178)
Total	(2,423,714)	(2,500,568)	(2,637,907)
Expenses By Nature Cost Of Sales [Member]
IfrsStatementLineItems [Line Items]
Raw materials and consumables used	(1,187,542)	(1,228,138)	(1,421,712)
Third-party services	(481,942)	(508,556)	(474,280)
Depreciation and amortization	(322,135)	(306,251)	(283,928)
Employee benefit expenses	(209,526)	(204,269)	(181,375)
Others	(27,265)	(27,143)	(32,641)
Total	(2,228,410)	(2,274,357)	(2,393,936)
Expenses By Nature Selling General And Administrative [Member]
IfrsStatementLineItems [Line Items]
Raw materials and consumables used
Third-party services	(43,170)	(44,441)	(40,237)
Depreciation and amortization	(7,375)	(4,025)	(4,286)
Employee benefit expenses	(60,124)	(53,534)	(58,864)
Others	(16,659)	(24,599)	(41,783)
Total	(127,328)	(126,599)	(145,170)
Expenses By Nature Mineral Exploration And Project Development [Member]
IfrsStatementLineItems [Line Items]
Raw materials and consumables used
Third-party services	(49,197)	(73,210)	(64,959)
Depreciation and amortization	(688)	(199)	(58)
Employee benefit expenses	(9,630)	(13,786)	(18,030)
Others	(8,461)	(12,417)	(15,754)
Total	$ (67,976)	$ (99,612)	$ (98,801)

X

- Definition

The amount of depreciation and amortisation expense. Depreciation and amortisation are the systematic allocations of depreciable amounts of assets over their useful lives.

+ References

No definition available.

+ Details

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

X

- Definition

The expense of all forms of consideration given by an entity in exchange for a service rendered by employees or for the termination of employment.

+ References

No definition available.

+ Details

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

X

- Definition

The amount of expenses aggregated according to their nature (for example, depreciation, purchases of materials, transport costs, employee benefits and advertising costs), and not reallocated among functions within the entity.

+ References

No definition available.

+ Details

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

X

- References

No definition available.

+ Details

Name:	nexa_IfrsStatementLineItems
Namespace Prefix:	nexa_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of expenses that the entity does not separately disclose in the same statement or note when the entity uses the 'nature of expense' form for its analysis of expenses. [Refer: Expenses, by nature]

+ References

No definition available.

+ Details

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

X

- Definition

The amount of raw materials and consumables used in the production process or in the rendering of services. [Refer: Current raw materials]

+ References

No definition available.

+ Details

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

X

- Definition

The amount of expense arising from services.

+ References

No definition available.

+ Details

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

X

- Details

Name:	ifrs-full_AttributionOfExpensesByNatureToTheirFunctionAxis=nexa_ExpensesByNatureCostOfSalesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_AttributionOfExpensesByNatureToTheirFunctionAxis=nexa_ExpensesByNatureSellingGeneralAndAdministrativeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_AttributionOfExpensesByNatureToTheirFunctionAxis=nexa_ExpensesByNatureMineralExplorationAndProjectDevelopmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: