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INCOME AND SOCIAL CONTRIBUTION TAXES - Carryforwards (Details) - BRL (R$)
R$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
INCOME AND SOCIAL CONTRIBUTION TAXES    
Tax loss carryforward R$ 4,547,785 R$ 4,052,013
Negative tax basis of social contribution carryforward R$ 4,377,311 R$ 3,660,133