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Taxes to Recover - Summary of Recoverable Taxes (Detail) - BRL (R$)
R$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Summary of recoverable taxes [line items]    
Recoverable taxes R$ 2,519,658 R$ 1,889,695
Current 1,044,850 1,122,335
Non-current 1,474,808 767,360
Icms [member]    
Summary of recoverable taxes [line items]    
Recoverable taxes 1,129,325 872,670
PIS and COFINS [member]    
Summary of recoverable taxes [line items]    
Recoverable taxes 1,297,029 930,570
Value Added Tax [member]    
Summary of recoverable taxes [line items]    
Recoverable taxes 35,600 29,707
Other taxes payable [member]    
Summary of recoverable taxes [line items]    
Recoverable taxes R$ 57,704 R$ 56,748