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Transactions with related parties - Additional Information (Details) - BRL (R$)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of transactions between related parties [line items]      
Purchases of goods, related party transactions R$ 3,090,000 R$ 18,684,000 R$ 10,480,000
Allowance for expected credit losses on related parties 0    
Associate (transaction services)      
Disclosure of transactions between related parties [line items]      
Purchases of goods, related party transactions 1,119,000 2,032,000 R$ 451,000
Officers and Directors | Associate (transaction services)      
Disclosure of transactions between related parties [line items]      
Purchases of goods, related party transactions R$ 36,000 R$ 33,000  
Bottom of range      
Disclosure of transactions between related parties [line items]      
Loans payable term 3 years    
Top of range      
Disclosure of transactions between related parties [line items]      
Loans payable term 7 years