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Inventories - Summary of inventories and written down of inventories (Detail) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Classes of current inventories [abstract]
Finished goods	R$ 814,320	R$ 560,028
Spare parts and accessories	180,286	219,831
Raw material	126,889	118,319
Warehouse and other	27,809	30,279
Fuels and lubricants		6,807
Inventories	1,149,304	935,264
Provision for obsolete inventories	R$ 26,841	R$ 17,449

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The amount of provision allocated for obsolete inventories.

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Warehouse and others.

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A classification of current inventory representing the amount of fuel. [Refer: Inventories]

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A classification of current inventory representing the amount of goods that have completed the production process and are held for sale in the ordinary course of business. [Refer: Inventories]

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The amount of current inventories. [Refer: Inventories]

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A classification of current inventory representing the amount of assets to be consumed in the production process or in the rendering of services. [Refer: Inventories]

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A classification of current inventory representing the amount of interchangeable parts that are kept in an inventory and are used for the repair or replacement of failed parts. [Refer: Inventories]

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