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COMMITMENTS (Tables)
 12 Months Ended
Dec. 31, 2023
Notes and other explanatory information [abstract]  
Schedule of take-or-pay contracts
                       
    Payments in the period                    
Type of service   2022   2023   2024   2025   2026   After 2026   Total
                             
Transportation of iron ore, coal, coke, steel products, cement and mining products.   1,568,658   2,068,319   1,978,202   2,006,831   1,606,684   2,064,282   7,655,999
Supply of power, natural gas, oxygen, nitrogen, argon and iron ore pellets.   2,191,442   583,152   594,244   507,377   410,711   677,094   2,189,426
Processing of slag generated during pig iron and steel production.   84,140   22,981   22,879               22,879
Oil Storage and Handling   2,567   2,754   766               766
Labor and consultancy services   33,300   31,391   24,207   24,207   24,207   96,826   169,447
    3,880,107   2,708,597   2,620,298   2,538,415   2,041,602   2,838,202   10,038,517