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Material accounting policies (Details 1) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Level 2 of fair value hierarchy [member]
IfrsStatementLineItems [Line Items]
Valuation technique	Binomial model: The fair value is estimated by utilizing a simulation of possible future share prices, applying regression analysis, as well as comparing at each potential exercise date the discounted risk-neutral expectation of the option payoff if not exercised, and the relevant exercise price.
Inter-relationship between significant unobservable inputs and fair value measurement	The estimated fair value
Level 2 of fair value hierarchy [member] | Bottom of range [member]
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Expected volatility	24.00%	32.00%
Level 2 of fair value hierarchy [member] | Top of range [member]
IfrsStatementLineItems [Line Items]
Expected volatility	44.00%	45.00%
Level 3 of fair value hierarchy [member]
IfrsStatementLineItems [Line Items]
Valuation technique	Probability-weighted cash flows: This valuation technique considers the probability-weighted expectation of future cash flow.
Inter-relationship between significant unobservable inputs and fair value measurement	The estimated fair value would increase (decrease) if:
Expected cash flows	R$ 325,150	R$ 314,953
Probability of disbursement	100.00%	100.00%

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- Definition

The description of a change in valuation technique (for example, changing from a market approach to an income approach or the use of an additional valuation technique) for the fair value measurement of assets. [Refer: Income approach [member]; Market approach [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 13
-IssueDate 2024-01-01
-Paragraph 93
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- Definition

The expected volatility of the share price used to calculate the fair value of the share options granted. Expected volatility is a measure of the amount by which a price is expected to fluctuate during a period. The measure of volatility used in option pricing models is the annualised standard deviation of the continuously compounded rates of return on the share over a period of time.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2024-01-01
-Paragraph 47
-Subparagraph a
-Clause i
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The description of the interrelationships between unobservable inputs and of how they might magnify or mitigate the effect of changes in the unobservable inputs on the fair value measurement of assets. [Refer: Disclosure of significant unobservable inputs used in fair value measurement of assets [text block]]

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