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v3.26.1

Expenses by nature (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
IfrsStatementLineItems [Line Items] |  |  |
Raw materials and consumables used | $ (1,279,041) | $ (1,187,542) | $ (1,228,138)
Third-party services | (591,405) | (574,309) | (626,207)
Depreciation and amortization | (288,996) | (330,198) | (310,475)
Employee benefit expenses | (300,470) | (279,280) | (271,589)
Other expenses | (56,395) | (52,385) | (64,159)
Total | (2,516,307) | (2,423,714) | (2,500,568)
Expenses By Nature Cost Of Sales [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Raw materials and consumables used | (1,279,041) | (1,187,542) | (1,228,138)
Third-party services | (474,079) | (481,942) | (508,556)
Depreciation and amortization | (284,226) | (322,135) | (306,251)
Employee benefit expenses | (219,165) | (209,526) | (204,269)
Other expenses | (32,648) | (27,265) | (27,143)
Total | (2,289,159) | (2,228,410) | (2,274,357)
Expenses By Nature Selling General And Administrative [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Raw materials and consumables used |  |  |
Third-party services | (56,706) | (43,170) | (44,441)
Depreciation and amortization | (3,847) | (7,375) | (4,025)
Employee benefit expenses | (68,086) | (60,124) | (53,534)
Other expenses | (16,813) | (16,659) | (24,599)
Total | (145,452) | (127,328) | (126,599)
Expenses By Nature Mineral Exploration And Project Development [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Raw materials and consumables used |  |  |
Third-party services | (60,620) | (49,197) | (73,210)
Depreciation and amortization | (923) | (688) | (199)
Employee benefit expenses | (13,219) | (9,630) | (13,786)
Other expenses | (6,934) | (8,461) | (12,417)
Total | $ (81,696) | $ (67,976) | $ (99,612)

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
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |