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Basis of preparation of the consolidated financial statements (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
IfrsStatementLineItems [Line Items] |  |  |
Gross profit | $ 538,071 | $ 298,876 | $ 640,054
Operating expenses |  |  |
Selling, general and administrative | (127,328) | (126,599) | (145,170)
Mineral exploration and project evaluation | (67,976) | (99,612) | (98,801)
Total operating expenses | (261,685) | (451,438) | (279,157)
Operating (loss) income | 276,386 | (152,562) | 360,897
Net financial results |  |  |
Financial income | 24,028 | 25,793 | 25,018
Financial expenses | (243,695) | (209,891) | (169,778)
Total net financial results | 369,460 | 167,058 | 134,811
Loss before income tax | (71,851) | (296,084) | 227,971
Income tax benefit (expense) | 115,556 | (4,274) | 150,983
Net (loss) income for the year | (187,407) | (291,810) | 76,988
Attributable to NEXA's shareholders | (205,030) | (291,968) | 49,695
Attributable to non-controlling interests | 17,623 | 158 | 27,293
Net (loss) income for the year | $ (187,407) | $ (291,810) | $ 76,988
Weighted average number of outstanding shares, basic | 132,439 | 132,439 | 132,439
Weighted average number of outstanding shares, diluted | 132,439 | 132,439 | 132,439
Basic earnings (losses) per share | $ (1.55) | $ (2.20) | $ 0.38
Diluted earnings (losses) per share | $ (1.55) | $ (2.20) | $ 0.38
Previously stated [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Cost of sales |  | $ (2,276,757) | $ (2,395,180)
Gross profit |  | 296,476 | 638,810
Operating expenses |  |  |
Selling, general and administrative |  | (126,948) | (145,543)
Mineral exploration and project evaluation |  | (99,666) | (98,862)
Total operating expenses |  | (451,841) | (279,591)
Operating (loss) income |  | (155,365) | 359,219
Net financial results |  |  |
Financial income |  | 25,503 | 25,018
Financial expenses |  | (204,184) | (168,694)
Total net financial results |  | (161,641) | (133,727)
Loss before income tax |  | (293,470) | 227,377
Income tax benefit (expense) |  | 4,274 | (150,983)
Net (loss) income for the year |  | (289,196) | 76,394
Attributable to NEXA's shareholders |  | (289,354) | 49,101
Attributable to non-controlling interests |  | 158 | 27,293
Net (loss) income for the year |  | $ (289,196) | $ 76,394
Weighted average number of outstanding shares, basic |  | 132,439 | 132,439
Weighted average number of outstanding shares, diluted |  | 132,439 | 132,439
Basic earnings (losses) per share |  | $ (2.18) | $ 0.37
Diluted earnings (losses) per share |  | $ (2.18) | $ 0.37
Adjustments [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Cost of sales |  | $ 2,400 | $ 1,244
Gross profit |  | 2,400 | 1,244
Operating expenses |  |  |
Selling, general and administrative |  | 349 | 373
Mineral exploration and project evaluation |  | 54 | 61
Total operating expenses |  | 403 | 434
Operating (loss) income |  | 2,803 | 1,678
Net financial results |  |  |
Financial income |  | 290 |
Financial expenses |  | (5,707) | (1,084)
Total net financial results |  | (5,417) | (1,084)
Loss before income tax |  | (2,614) | 594
Income tax benefit (expense) |  |  |
Net (loss) income for the year |  | (2,614) | 594
Attributable to NEXA's shareholders |  | (2,614) | 594
Attributable to non-controlling interests |  |  |
Net (loss) income for the year |  | $ (2,614) | $ 594
Weighted average number of outstanding shares, basic |  |  |
Basic earnings (losses) per share |  | $ (0.02) | $ 0.01
Diluted earnings (losses) per share |  | $ (0.02) | $ 0.01
Revised [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Cost of sales |  | $ (2,274,357) | $ (2,393,936)
Gross profit |  | 298,876 | 640,054
Operating expenses |  |  |
Selling, general and administrative |  | (126,599) | (145,170)
Mineral exploration and project evaluation |  | (99,612) | (98,801)
Total operating expenses |  | (451,438) | (279,157)
Operating (loss) income |  | (152,562) | 360,897
Net financial results |  |  |
Financial income |  | 25,793 | 25,018
Financial expenses |  | (209,891) | (169,778)
Total net financial results |  | (167,058) | (134,811)
Loss before income tax |  | (296,084) | 227,971
Income tax benefit (expense) |  | 4,274 | (150,983)
Net (loss) income for the year |  | (291,810) | 76,988
Attributable to NEXA's shareholders |  | (291,968) | 49,695
Attributable to non-controlling interests |  | 158 | 27,293
Net (loss) income for the year |  | $ (291,810) | $ 76,988
Weighted average number of outstanding shares, basic |  | 132,439 | 132,439
Weighted average number of outstanding shares, diluted |  | 132,439 | 132,439
Basic earnings (losses) per share |  | $ (2.20) | $ 0.38
Diluted earnings (losses) per share |  | $ (2.20) | $ 0.38

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