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TAX, CIVIL AND LABOR CLAIMS AND CONTINGENT ASSETS - Contingent Assets (Details)
R$ in Thousands
 3 Months Ended 12 Months Ended
Sep. 30, 2021
BRL (R$)
Dec. 31, 2022
BRL (R$)
kW
TAX, CIVIL AND LABOR CLAIMS AND CONTINGENT ASSETS    
Minimum industrial consumers monthly electricity consumption limit (in Kilo watt hour) | kW   2,000
Maximum period to return the compulsory loan to taxpayers   20 years
Gain on settlement of litigation, net of expenses incurred R$ 1,391,280  
Amount of other pending lawsuits   R$ 73,000
Estimation of Contingent Assets   R$ 800,000