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Shareholders' equity (Details 1) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Notes and other explanatory information [abstract]
Net (loss) income for the year attributable to NEXA's shareholders	$ (205,030)	$ (291,968)	$ 49,695
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
Earning (losses) per share, basic	$ (1.55)	$ (2.20)	$ 0.38
Earning (losses) per share, diluted	$ (1.55)	$ (2.20)	$ 0.38

X

- Definition

The weighted average number of ordinary shares outstanding plus the weighted average number of ordinary shares that would be issued on the conversion of all the dilutive potential ordinary shares into ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

+ References

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The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator) divided by the weighted average number of ordinary shares outstanding during the period (the denominator).

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The profit (loss) from continuing and discontinued operations attributable to owners of the parent. [Refer: Profit (loss)]

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The number of ordinary shares outstanding at the beginning of the period, adjusted by the number of ordinary shares bought back or issued during the period multiplied by a time-weighting factor.

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