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Schedule of inventory (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
IfrsStatementLineItems [Line Items]    
Inventory gross R$ 11,600,028 R$ 5,164,890
Current 10,943,835 4,817,586
Non-current 656,193 347,304
Inventoy, net 11,600,028 5,164,890
Finished Goods [Member]    
IfrsStatementLineItems [Line Items]    
Inventory gross 4,457,842 1,627,676
Work In Progress [Member]    
IfrsStatementLineItems [Line Items]    
Inventory gross 2,710,149 1,358,905
Raw Materials [Member]    
IfrsStatementLineItems [Line Items]    
Inventory gross 3,638,952 1,289,653
Storeoom Supplies [Member]    
IfrsStatementLineItems [Line Items]    
Inventory gross 770,296 928,158
Advances To Suppliers [Member]    
IfrsStatementLineItems [Line Items]    
Inventory gross 121,519 69,536
Provision For Losses [Member]    
IfrsStatementLineItems [Line Items]    
Inventory gross R$ (98,730) R$ (109,038)