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Cash and cash equivalents, financial investments and derivative financial instruments - Cash and cash equivalents (Detail) - BRL (R$)
R$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Cash and cash equivalents, financial investments and derivative financial instruments        
Cash and bank deposits in local currency R$ 105,986 R$ 317,907    
Cash and bank deposits in foreign currency 5,811 16,640    
Fixed-income securities in local currency 5,204,766 1,943,164    
Fixed-income securities in foreign currency 305,206 2,363    
Total cash and cash equivalents R$ 5,621,769 R$ 2,280,074 R$ 2,661,494 R$ 2,115,379