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Schedule of book value of the collateral property, plant and equipment (Details) - BRL (R$)
R$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
IfrsStatementLineItems [Line Items]    
Book value of the collateral R$ 2,659,351 R$ 3,201,738
Land [member]    
IfrsStatementLineItems [Line Items]    
Type of collateral Financial/Tax  
Book value of the collateral R$ 150,420 223,918
Buildings [member]    
IfrsStatementLineItems [Line Items]    
Type of collateral Financial/Tax  
Book value of the collateral R$ 1,209,662 1,491,531
Machinery [member]    
IfrsStatementLineItems [Line Items]    
Type of collateral Financial/Labor/Tax/Civil  
Book value of the collateral R$ 1,284,033 1,470,295
Fixtures and fittings [member]    
IfrsStatementLineItems [Line Items]    
Type of collateral Financial/Tax  
Book value of the collateral R$ 14,960 15,700
Vehicles [member]    
IfrsStatementLineItems [Line Items]    
Type of collateral Financial/Tax  
Book value of the collateral R$ 276 R$ 294