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INTANGIBLE - Goodwill and intangible assets with indefinite useful life (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
INTANGIBLE    
Goodwill and intangible assets with indefinite useful life R$ 8,019,599 R$ 8,017,579
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
Other    
INTANGIBLE    
Goodwill and intangible assets with indefinite useful life R$ 3,216 R$ 1,196