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BIOLOGICAL ASSETS - Roll-forward of biological assets (Details) - BRL (R$)
R$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Roll-forward of biological assets      
Opening balance R$ 14,632,186 R$ 12,248,732  
Additions 5,777,952 4,957,380  
Depletions (3,680,997) (3,665,057)  
Transfers (136,297)  
Gain on fair value adjustment 1,989,831 1,199,759 R$ 763,091
Disposals (128,370) (82,331)  
Other write-offs (175,723) (26,297)  
Closing balance R$ 18,278,582 R$ 14,632,186 R$ 12,248,732
Effective area of forest from the year of planting 3 years    
Bottom of range [member]      
Roll-forward of biological assets      
Average cycle of forest formation 6 years    
Top of range [member]      
Roll-forward of biological assets      
Average cycle of forest formation 7 years