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INTANGIBLE - Goodwill and intangible assets with indefinite useful life (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
INTANGIBLE    
Goodwill and intangible assets with indefinite useful life R$ 8,192,076 R$ 8,019,788
Facepa    
INTANGIBLE    
Goodwill and intangible assets with indefinite useful life 119,332 119,332
Fibria    
INTANGIBLE    
Goodwill and intangible assets with indefinite useful life 7,897,051 7,897,051
MMC Brasil [Member]    
INTANGIBLE    
Goodwill and intangible assets with indefinite useful life 170,859
Other    
INTANGIBLE    
Goodwill and intangible assets with indefinite useful life R$ 4,834 R$ 3,405