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Loans and Financing - Summary of Changes in Loans and Financing (Detail) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disclosure of detailed information about borrowings [line items]      
Beginning balance R$ 2,837,022 R$ 2,081,897  
Additions 4,753,488 761,248  
Payment (1,108,325) (159,408)  
Interest 264,003 153,285  
Ending balance 6,746,188 2,837,022  
Current 5,038,705 777,702 R$ 22,534
Noncurrent 1,707,483 2,059,320 R$ 2,059,363
Obligations to FIDC AR quota holders [member]      
Disclosure of detailed information about borrowings [line items]      
Beginning balance 2,064,333 2,065,026  
Additions 1,620,000    
Payment (180,713) (141,297)  
Interest 186,922 140,604  
Ending balance 3,690,542 2,064,333  
Obligation to FIDC TAPSO quota holders [member]      
Disclosure of detailed information about borrowings [line items]      
Beginning balance 10,238    
Additions 20,000 10,000  
Payment (10,734)    
Interest 848 238  
Ending balance 20,352 10,238  
Leases [member]      
Disclosure of detailed information about borrowings [line items]      
Beginning balance 3,674 12,517  
Additions 154,650 4,339  
Payment (38,023) (14,296)  
Interest 4,457 1,114  
Ending balance 124,758 3,674  
Bank borrowings [member]      
Disclosure of detailed information about borrowings [line items]      
Beginning balance 750 4,354  
Additions 2,561,360    
Payment (798,323) (3,815)  
Interest 13,296 211  
Ending balance 1,777,083 750  
Debentures [member]      
Disclosure of detailed information about borrowings [line items]      
Additions 397,478    
Payment (13,815)    
Interest 11,334    
Ending balance 394,997    
Loans with private entities [member]      
Disclosure of detailed information about borrowings [line items]      
Beginning balance 758,027    
Additions   746,909  
Payment (66,717)    
Interest 47,146 11,118  
Ending balance R$ 738,456 R$ 758,027