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TAX CREDITS - Realization of non-current tax credits (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Estimates of realization of non-current tax credits    
Tax credits - non-current R$ 124,600 R$ 664,045
Tax credits    
Estimates of realization of non-current tax credits    
Tax credits - non-current 124,600 664,045
Tax credits | 2022.    
Estimates of realization of non-current tax credits    
Tax credits - non-current   584,145
Tax credits | 2023.    
Estimates of realization of non-current tax credits    
Tax credits - non-current 64,426 22,433
Tax credits | 2024.    
Estimates of realization of non-current tax credits    
Tax credits - non-current 40,853 8,054
Tax credits | 2025.    
Estimates of realization of non-current tax credits    
Tax credits - non-current 11,660 R$ 49,413
Tax credits | 2026 and after    
Estimates of realization of non-current tax credits    
Tax credits - non-current R$ 7,661