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Loans, financing, debentures and hedge derivative financial instruments - Summary of Principal Maturity Schedule (Detail) - BRL (R$)
R$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Disclosure of detailed information about borrowings [line items]    
Long term debt R$ 13,511,592 R$ 14,120,272
From 1 to 2 years [Member]    
Disclosure of detailed information about borrowings [line items]    
Long term debt 3,092,734 2,702,626
From 2 to 3 years [Member]    
Disclosure of detailed information about borrowings [line items]    
Long term debt 774,904 3,091,641
From 3 to 4 years [Member]    
Disclosure of detailed information about borrowings [line items]    
Long term debt 270,401 784,778
From 4 to 5 years [Member]    
Disclosure of detailed information about borrowings [line items]    
Long term debt 3,056,499 231,271
More than 5 years [Member]    
Disclosure of detailed information about borrowings [line items]    
Long term debt R$ 6,317,054 R$ 7,309,956