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Earnings per share - Basic (Details) - BRL (R$) R$ / shares in Units, shares in Thousands, R$ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Basic earnings per share [abstract]
Resulted of the year attributable to controlling shareholders'	R$ 1,953,516	R$ 3,224,266	R$ 13,298,971	R$ (330,540)
Weighted average number of shares in the period – in thousands			1,264,118	1,298,205
Weighted average treasury shares – in thousands			(27,149)	(24,823)
Weighted average number of outstanding shares – in thousands			1,236,969	1,273,382
Basic earnings per common share – R$	R$ 1.58063	R$ 2.57597	R$ 10.75126	R$ (0.25958)

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- 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).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2027-01-01
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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The weighted average total number of shares issued throughout the period.

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- Definition

Number of shares of treasury stock determined by relating the portion of time within a reporting period that treasury shares have been outstanding to the total time in that period. Treasury stock is stock that the Entity has issued but subsequently reacquired.

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