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Net sales - Analysis of Revenue from Continuing Operations (Detail) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of disaggregation of revenue from contracts with customers [abstract]
Gross revenue from sales of products and services	R$ 30,317,755	R$ 24,040,536	R$ 23,703,245
Construction revenue	1,020,176	885,630	813,341
Indirect taxes and deductions	(5,472,930)	(4,488,331)	(3,905,177)
Net sales	R$ 25,865,001	R$ 20,437,835	R$ 20,611,409

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Revenue arising from exchanges of goods or services sale of goods.

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The income arising in the course of an entity's ordinary activities. Income is increases in assets, or decreases in liabilities, that result in increases in equity, other than those relating to contributions from holders of equity claims.

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The amount of revenue arising from construction contracts. Construction contracts are contracts specifically negotiated for the construction of an asset or a combination of assets that are closely interrelated or interdependent in terms of their design, technology and function or their ultimate purpose or use. [Refer: Revenue]

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