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Right to Use Assets and Leases payable - Additional Information (Detail) - BRL (R$)
R$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of quantitative information about right-of-use assets [line items]      
Expense relating to leases of low-value assets R$ 17,749 R$ 11,400 R$ 11,386