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INTANGIBLE - Goodwill and intangible assets with indefinite useful life (Details) - BRL (R$)
R$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Goodwill and intangible assets with indefinite useful life    
Goodwill and intangible assets with indefinite useful life R$ 8,063,014 R$ 8,063,014
Vale Florestar S.A.    
Goodwill and intangible assets with indefinite useful life    
Goodwill and intangible assets with indefinite useful life 45,435 45,435
Facepa    
Goodwill and intangible assets with indefinite useful life    
Goodwill and intangible assets with indefinite useful life 119,332 119,332
Fibria    
Goodwill and intangible assets with indefinite useful life    
Goodwill and intangible assets with indefinite useful life 7,897,051 7,897,051
Other    
Goodwill and intangible assets with indefinite useful life    
Goodwill and intangible assets with indefinite useful life R$ 1,196 R$ 1,196