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COST OF SALES (Tables)
 12 Months Ended
Dec. 31, 2023
Notes and other explanatory information [abstract]  
Schedule of cost of sales
Schedule of cost of sales            
    12.31.2023   12.31.2022   12.31.2021
Inventories at the beginning of the year   173   155   116
             
Plus: Charges of the year            
Purchases of inventories, energy and gas    411   502   433
Salaries and social security charges   85   79   59
Employees benefits   17   15   13
Defined benefit plans   8   5   4
Works contracts, fees and compensation for services 111   97   73
Property, plant and equipment depreciation   254   202   194
Intangible assets amortization   5   1   1
Right-of-use assets amortization   1   3   5
Energy transportation   9   8   6
Transportation and freights   20   16   13
Consumption of materials   27   30   26
Penalties   2   1   2
Maintenance   47   61   52
Canons and royalties   92   89   65
Environmental control   4   5   4
Rental and insurance   31   31   27
Surveillance and security   5   4   3
Taxes, rates and contributions   7   5   4
Other   3   3   6
Total charges of the year   1,139   1,157   990
           
             
Less: Inventories at the end of the year   (205)   (173)   (155)
Total cost of sales   1,107   1,139   951