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RECOVERABLE VALUE OF LONG-TERM ASSETS - Impairment recognized in Balance sheet, by operating segment (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
RECOVERABLE VALUE OF LONG-TERM ASSETS      
Impairment Loss recognized R$ 1,847,079 R$ 2,689,823  
Fixed Assets, Net      
RECOVERABLE VALUE OF LONG-TERM ASSETS      
Impairment Loss recognized 1,769,570 2,536,835  
Intangible assets, Net      
RECOVERABLE VALUE OF LONG-TERM ASSETS      
Impairment Loss recognized 77,509 152,988  
Generation      
RECOVERABLE VALUE OF LONG-TERM ASSETS      
Impairment Loss recognized 1,776,648 2,620,752 R$ 6,964,625
Generation | Fixed Assets, Net      
RECOVERABLE VALUE OF LONG-TERM ASSETS      
Impairment Loss recognized 1,769,570 2,536,835  
Generation | Intangible assets, Net      
RECOVERABLE VALUE OF LONG-TERM ASSETS      
Impairment Loss recognized 7,078 83,917  
Administration      
RECOVERABLE VALUE OF LONG-TERM ASSETS      
Impairment Loss recognized 70,431 69,071  
Administration | Intangible assets, Net      
RECOVERABLE VALUE OF LONG-TERM ASSETS      
Impairment Loss recognized R$ 70,431 R$ 69,071