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Financial Assets and Liabilities - Summary of movement of leases (Detail) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure Of Movement Of Leases [Line Items]    
Beginning balance R$ 3,001,847 R$ 4,594,888
Business Combination (note 9.3) 3,281  
Additions 142,562 3,531,470
Interest 426,313 606,529
Transfer between liabilities [1] (54,139) (111,737)
Payment of principal (461,040) (5,424,917)
Payment of interest (165,301) (500,922)
Monetary adjustment 374,155 306,536
Ending balance 3,267,678 R$ 3,001,847
Current 405,820  
Non-current R$ 2,861,858  
[1] Transfer of railroad concession payable to lease (Note 13).