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Equity - Disclosure - Equity - Summary of Balances and Changes in Dividends Payable (Detail) - BRL (R$)
R$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Equity [abstract]    
Beginning balance R$ 442,133 R$ 16,094
Provisions 478,366 710,206
Prescribed dividends (11,816)  
Reclassification to liabilities of subsidiaries held for sale (70)  
Ending balance R$ 202,860 R$ 442,133