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27 Right-of-use asset and lease liability (Details 5)
R$ in Thousands
Dec. 31, 2019
BRL (R$)
Disclosure of quantitative information about right-of-use assets [line items]  
Commitments from leases and rents R$ 194,818
Less Than 1 Year [Member]  
Disclosure of quantitative information about right-of-use assets [line items]  
Commitments from leases and rents 6,347
1 to 5 Years [Member]  
Disclosure of quantitative information about right-of-use assets [line items]  
Commitments from leases and rents 29,645
Over 5 Years [Member]  
Disclosure of quantitative information about right-of-use assets [line items]  
Commitments from leases and rents R$ 158,826