v3.25.4
FINANCIAL INSTRUMENTS AND RISK AND CAPITAL MANAGEMENT (Details 5)
R$ in Thousands
 12 Months Ended
Dec. 31, 2025
BRL (R$)
Probable | IPCA  
Sensitivity analysis assumptions  
Risk Variable (as a percent) 4.87%
Probable | IGPM  
Sensitivity analysis assumptions  
Risk Variable (as a percent) 1.05%
Probable | CDI  
Sensitivity analysis assumptions  
Risk Variable (as a percent) 14.90%
Probable | Euribor  
Sensitivity analysis assumptions  
Risk Variable (as a percent) 1.96%
Probable | Price of Copper (Ton) - US$  
Sensitivity analysis assumptions  
Risk Variable (price) R$ 12,504
Probable | United States of America, Dollars  
Sensitivity analysis assumptions  
Risk Variable Ratio 5,500
Probable | Euro Member Countries, Euro  
Sensitivity analysis assumptions  
Risk Variable Ratio 6,470
25% depreciation | IPCA  
Sensitivity analysis assumptions  
Risk Variable (as a percent) 6.12%
25% depreciation | IGPM  
Sensitivity analysis assumptions  
Risk Variable (as a percent) 1.31%
25% depreciation | CDI  
Sensitivity analysis assumptions  
Risk Variable (as a percent) 18.63%
25% depreciation | Euribor  
Sensitivity analysis assumptions  
Risk Variable (as a percent) 2.46%
25% depreciation | Price of Copper (Ton) - US$  
Sensitivity analysis assumptions  
Risk Variable (price) R$ 15,630
25% depreciation | United States of America, Dollars  
Sensitivity analysis assumptions  
Risk Variable Ratio 6,880
25% depreciation | Euro Member Countries, Euro  
Sensitivity analysis assumptions  
Risk Variable Ratio 8,090.00
50% depreciation | IPCA  
Sensitivity analysis assumptions  
Risk Variable (as a percent) 7.39%
50% depreciation | IGPM  
Sensitivity analysis assumptions  
Risk Variable (as a percent) 1.58%
50% depreciation | CDI  
Sensitivity analysis assumptions  
Risk Variable (as a percent) 22.35%
50% depreciation | Euribor  
Sensitivity analysis assumptions  
Risk Variable (as a percent) 2.95%
50% depreciation | Price of Copper (Ton) - US$  
Sensitivity analysis assumptions  
Risk Variable (price) R$ 18,756
50% depreciation | United States of America, Dollars  
Sensitivity analysis assumptions  
Risk Variable Ratio 8,250
50% depreciation | Euro Member Countries, Euro  
Sensitivity analysis assumptions  
Risk Variable Ratio 9,700