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CONCESSION CONTRACT ASSETS (Details 2) - BRL (R$)
R$ in Millions
Dec. 31, 2022
Dec. 31, 2021
IfrsStatementLineItems [Line Items]    
Current consideration R$ 728 R$ 600
Non current consideration 4,010 3,758
Total consideration 4,738 4,358
Concession contract - 004/05 [member]    
IfrsStatementLineItems [Line Items]    
Current consideration 29 27
Non current consideration 81 89
Concession contract - 079/00 [member]    
IfrsStatementLineItems [Line Items]    
Current consideration 47 39
Non current consideration 143 152
Concession Contract Three [Member]    
IfrsStatementLineItems [Line Items]    
Current consideration 8 7
Non current consideration 85 74
Basic Network of the Existing System (BNES) [member]    
IfrsStatementLineItems [Line Items]    
Current consideration 408 318
Non current consideration 1,519 1,694
Basic Network of New Facilities (BNNF) [member]    
IfrsStatementLineItems [Line Items]    
Current consideration 236 209
Non current consideration R$ 2,182 R$ 1,749