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Earnings per share (Details) - BRL (R$) R$ / shares in Units, R$ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Notes and other explanatory information [abstract]
Profit for the year	R$ 9,579,563	R$ 3,523,531	R$ 3,121,267
Weighted average number of common shares issued	683,509,869	683,509,869	683,509,869
Basic earnings per share (reais per share)	R$ 14.02	R$ 5.16	R$ 4.57
Diluted earnings per share (reais per share)	R$ 14.02	R$ 5.16	R$ 4.57

X

- Definition

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 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), both adjusted for the effects of all dilutive potential ordinary shares. [Refer: Ordinary shares [member]; Weighted average [member]]

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The total of income less expenses from continuing and discontinued operations, excluding the components of other comprehensive income. [Refer: Other comprehensive income]

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