Income tax and contribution - Schedule of Reconciliation of the effective income tax rate (Detail) - BRL (R$) R$ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Reconciliation of accounting profit multiplied by applicable tax rates [abstract]
Profit (loss) before tax	R$ (2,340,930)	R$ (722,367)	R$ (4,213,208)
Tax rate effect of tax losses	34.00%	34.00%	34.00%
Tax expense (income) at applicable tax rate	R$ 795,916	R$ 245,605	R$ 1,432,491
Adjustments to determine the effective rate:
Result from investments not taxed abroad	298,972	100,586	0
Unrecorded benefit on tax losses and temporary differences	(1,189,039)	(700,826)	(1,593,326)
Mark to market of convertible instruments	(8,584)	176,737	281,932
Permanent differences	43,764	154,669	(116,876)
Rate differential	(24,377)	(29,189)	0
Others	(4,932)	(5,960)	(4,221)
Income tax and social contribution credit (expense)	39,526	0	0
Deferred income tax and social contribution	(39,526)	0	0
Income tax and social contribution credit (expense)	(39,526)	0	0
Income tax and social contribution credit	R$ 0	R$ 0	R$ 0
Effective rate	(1.70%)	0.00%	0.00%

Represents Income tax and social contribution credit.

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Mark to market of convertible instruments

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Tax effect of income (expense) not deductible in determining taxable profit (tax loss)

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The amount of tax expense (income) relating to changes in deferred tax liabilities and deferred tax assets. [Refer: Deferred tax assets; Deferred tax liabilities]

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The aggregate amount included in the determination of profit (loss) for the period in respect of current tax and deferred tax. [Refer: Current tax expense (income); Deferred tax expense (income)]

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The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that the entity does not separately disclose in the same statement or note. [Refer: Accounting profit; Applicable tax rate]

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The profit (loss) before tax expense or income. [Refer: Profit (loss)]

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The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to changes in the tax rate. [Refer: Accounting profit]

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The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to revenues that are exempt from taxation. [Refer: Accounting profit]

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The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to tax losses. [Refer: Accounting profit]

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The product of the accounting profit multiplied by the applicable tax rate(s). [Refer: Accounting profit; Applicable tax rate]

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The tax rate effect on the reconciliation between the average effective tax rate and the applicable tax rate resulting from a change in tax rate. [Refer: Average effective tax rate; Applicable tax rate]

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The tax rate effect on the reconciliation between the average effective tax rate and the applicable tax rate resulting from tax losses. [Refer: Average effective tax rate; Applicable tax rate]

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