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v3.25.1

Information by business segment (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | $ 2,766,481 | $ 2,573,233 | $ 3,033,990
Cost of sales | (2,228,410) | (2,274,357) | (2,393,936)
Gross profit | 538,071 | 298,876 | 640,054
Impairment loss of long-lived assets | 32,870 | 114,643 | 32,512
Other income and expenses, net | (33,511) | (110,584) | (2,674)
Adjusted EBITDA | 714,080 | 406,041 | 763,205
Change in fair value of energy forward contracts | 81 | (15,663) |
Other restoration obligations |  | 6,960 |
Divestment and restructuring | (9,028) |  |
Share in the results of associates | 21,223 | 23,536 | 1,885
(Loss) income before income tax | (71,851) | (296,084) | 227,971
Impairment of other assets |  |  | (9,302)
Operating segments [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 2,766,481 | 2,573,233 | 3,033,990
Cost of sales | (2,228,410) | (2,274,357) | (2,393,936)
Gross profit | 538,071 | 298,876 | 640,054
Selling, general and administrative | (127,328) | (126,599) | (145,170)
Mineral exploration and project evaluation | (67,976) | (99,612) | (98,801)
Impairment loss of long-lived assets | (32,870) | (114,643) | (32,512)
Other income and expenses, net | (33,511) | (110,584) | (2,674)
Operating (loss) income | 276,386 | (152,562) | 360,897
Depreciation and amortization | 330,198 | 310,475 | 292,140
Miscellaneous adjustments | 107,496 | 248,128 | 110,168
Adjusted EBITDA | 714,080 | 406,041 | 763,205
Operating segments [member] | Mining Segment [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 1,349,666 | 1,090,276 | 1,248,027
Cost of sales | (1,011,742) | (1,026,178) | (904,370)
Gross profit | 337,924 | 64,098 | 343,657
Selling, general and administrative | (66,307) | (61,690) | (64,219)
Mineral exploration and project evaluation | (60,939) | (90,238) | (88,867)
Impairment loss of long-lived assets | (32,870) | (109,347) | (32,276)
Other income and expenses, net | (41,714) | (67,876) | (32,787)
Operating (loss) income | 136,094 | (265,053) | 125,508
Depreciation and amortization | 243,111 | 229,153 | 206,540
Miscellaneous adjustments | 84,866 | 196,529 | 110,993
Adjusted EBITDA | 464,071 | 160,629 | 443,041
Operating segments [member] | Smelting Segment [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 1,997,341 | 1,946,661 | 2,466,967
Cost of sales | (1,799,773) | (1,726,271) | (2,190,530)
Gross profit | 197,568 | 220,390 | 276,437
Selling, general and administrative | (57,197) | (61,097) | (60,287)
Mineral exploration and project evaluation | (7,887) | (9,374) | (9,934)
Impairment loss of long-lived assets |  | (5,296) | (236)
Other income and expenses, net | 7,984 | (26,412) | 43,049
Operating (loss) income | 140,468 | 118,211 | 249,029
Depreciation and amortization | 86,458 | 80,471 | 77,904
Miscellaneous adjustments | 22,630 | 51,599 | (825)
Adjusted EBITDA | 249,556 | 250,281 | 326,108
Operating segments [member] | Adjustment [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Impairment loss of long-lived assets | (32,870) | (114,643) | (32,512)
Miscellaneous adjustments | (107,496) | (248,128) | (110,168)
Changes in fair value of offtake agreement | (102) | 2,268 | 24,267
Impairment (reversal) of other assets | (307) |  |
Aripuana ramp up impacts | (25,158) |  |
Loss on sale of property, plant and equipment | (16,183) | (3,734) | (698)
Remeasurement in estimates of asset retirement obligations | 5,310 | 3,125 | 6,182
Remeasurement adjustment of streaming agreement | (21,084) | (10,121) | (10,565)
Change in fair value of energy forward contracts | 81 | (15,663) |
Other restoration obligations | (1,026) | (6,960) |
Divestment and restructuring | 9,028 |  |
Dividends received in cash | (25,185) |  |
Depreciation and amortization | (330,198) | (310,475) | (292,140)
Share in the results of associates | 21,223 | 23,536 | 1,885
Net financial results | (369,460) | (167,058) | (134,811)
(Loss) income before income tax | (71,851) | (296,084) | 227,971
Ramp-up expenses of greenfield projects Aripuana |  | (15,494) | (87,540)
Tax voluntary disclosure |  | (86,906) |
Impairment of other assets |  |  | (9,302)
Elimination of intersegment amounts [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | (604,034) | (468,250) | (683,583)
Cost of sales | 604,034 | 468,250 | 683,583
Material reconciling items [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Net revenues | 23,508 | 4,546 | 2,579
Cost of sales | (20,929) | 9,842 | 17,381
Gross profit | 2,579 | 14,388 | 19,960
Selling, general and administrative | (3,824) | (3,812) | (20,664)
Mineral exploration and project evaluation | 850 |  |
Other income and expenses, net | 219 | (16,296) | (12,936)
Operating (loss) income | (176) | (5,720) | (13,640)
Depreciation and amortization | 629 | 851 | 7,696
Adjusted EBITDA | $ 453 | $ (4,869) | $ (5,944)

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- Definition The amount of expense arising from the search for mineral resources, including minerals, oil, natural gas and similar non-regenerative resources after the entity has obtained legal rights to explore in a specific area, as well as the determination of the technical feasibility and commercial viability of extracting the mineral resource. + References No definition available. + Details
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X
- Definition The amount of expense relating to selling, general and administrative activities of the entity. + References No definition available. + Details
Name: | nexa_SellingGeneralAndAdministrationExpense
Namespace Prefix: | nexa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The element represents provision of Tax Voluntary Disclosure. + References No definition available. + Details
Name: | nexa_TaxVoluntaryDisclosure
Namespace Prefix: | nexa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | ifrs-full_SegmentConsolidationItemsAxis=ifrs-full_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=nexa_MiningSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=nexa_SmeltingSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=nexa_AdjustmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentConsolidationItemsAxis=ifrs-full_EliminationOfIntersegmentAmountsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentConsolidationItemsAxis=ifrs-full_MaterialReconcilingItemsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |