Results per share (Details) - BRL (R$) R$ / shares in Units, R$ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
IfrsStatementLineItems [Line Items]
Net loss for the fiscal year attributed to controlling shareholders	R$ (1,561,473)	R$ (7,221,538)	R$ (5,988,128)
Common Share [Member]
IfrsStatementLineItems [Line Items]
Net loss for the fiscal year attributed to controlling shareholders	R$ (311,590)	R$ (1,560,971)	R$ (1,377,078)
Weighted average number of outstanding shares (in thousands)	2,863,683	2,863,683	2,863,683
Basic loss per share	R$ (0.109)	R$ (0.545)	R$ (0.481)
Diluted loss per share	R$ (0.109)	R$ (0.545)	R$ (0.481)
Preference shares [member]
IfrsStatementLineItems [Line Items]
Net loss for the fiscal year attributed to controlling shareholders	R$ (1,249,883)	R$ (5,660,567)	R$ (4,611,050)
Weighted average number of outstanding shares (in thousands)	327,062	295,486	273,967
Basic loss per share	R$ (3.822)	R$ (19.157)	R$ (16.831)
Diluted loss per share	R$ (3.822)	R$ (19.157)	R$ (16.831)

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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

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

+ References

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- Definition

The profit (loss) attributable to ordinary equity holders of the parent entity. [Refer: Profit (loss)]

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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.

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