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Property, Plant and Equipment (Details 5)
 12 Months Ended
Dec. 31, 2023
BRL (R$)
Wind Power Assets [Member] | Sao Bento Complex [Member]  
IfrsStatementLineItems [Line Items]  
Discount rate 8.17%
RA/CA-1 78.56%
RA/CA-1 (5% Variation) 73.72%
RA/CA-1 (10% Variation) 69.09%
Impairment Risk
Wind Power Assets [Member] | Brisa I Complex [Member]  
IfrsStatementLineItems [Line Items]  
Discount rate 8.17%
RA/CA-1 74.49%
RA/CA-1 (5% Variation) 69.45%
RA/CA-1 (10% Variation) 64.64%
Impairment Risk
Wind Power Assets [Member] | Brisa I I Complex [Member]  
IfrsStatementLineItems [Line Items]  
Discount rate 8.17%
RA/CA-1 72.24%
RA/CA-1 (5% Variation) 66.94%
RA/CA-1 (10% Variation) 61.89%
Impairment Risk
Wind Power Assets [Member] | Bento Miguel Complex [Member]  
IfrsStatementLineItems [Line Items]  
Discount rate 8.17%
RA/CA-1 27.10%
RA/CA-1 (5% Variation) 23.11%
RA/CA-1 (10% Variation) 19.34%
Impairment Risk
Wind Power Assets [Member] | Cutia Complex [Member]  
IfrsStatementLineItems [Line Items]  
Discount rate 8.17%
RA/CA-1 21.56%
RA/CA-1 (5% Variation) 18.06%
RA/CA-1 (10% Variation) 14.72%
Impairment Risk
Wind Power Assets [Member] | Jandaira Complex [Member]  
IfrsStatementLineItems [Line Items]  
Discount rate 5.29%
RA/CA-1 33.62%
RA/CA-1 (5% Variation) 29.80%
RA/CA-1 (10% Variation) 26.16%
Impairment Risk
Wind Power Assets [Member] | Vilas Complex [Member]  
IfrsStatementLineItems [Line Items]  
Discount rate 4.94%
RA/CA-1 46.42%
RA/CA-1 (5% Variation) 42.02%
RA/CA-1 (10% Variation) 37.81%
Impairment Risk
Wind Power Assets [Member] | Aventura Complex [Member]  
IfrsStatementLineItems [Line Items]  
Discount rate 4.66%
RA/CA-1 22.96%
RA/CA-1 (5% Variation) 19.44%
RA/CA-1 (10% Variation) 16.07%
Impairment Risk
Wind Power Assets [Member] | Santa Rosa E Novo Mundo Complex [Member]  
IfrsStatementLineItems [Line Items]  
Discount rate 4.66%
RA/CA-1 15.95%
RA/CA-1 (5% Variation) 12.71%
RA/CA-1 (10% Variation) 9.61%
Impairment Risk
Hydric Assets [Member] | Foz Do Areia [Member]  
IfrsStatementLineItems [Line Items]  
Discount rate 5.43%
RA/CA-1 12.36%
RA/CA-1 (5% Variation) 12.21%
RA/CA-1 (10% Variation) 12.07%
Impairment Risk
Hydric Assets [Member] | Segredo [Member]  
IfrsStatementLineItems [Line Items]  
Discount rate 5.43%
RA/CA-1 51.94%
RA/CA-1 (5% Variation) 49.82%
RA/CA-1 (10% Variation) 47.73%
Impairment Risk
Hydric Assets [Member] | Caxias [Member]  
IfrsStatementLineItems [Line Items]  
Discount rate 5.43%
RA/CA-1 49.54%
RA/CA-1 (5% Variation) 47.36%
RA/CA-1 (10% Variation) 45.22%
Impairment Risk
Hydric Assets [Member] | Chamine [Member]  
IfrsStatementLineItems [Line Items]  
Discount rate 5.43%
RA/CA-1 4.85%
RA/CA-1 (5% Variation) 4.02%
RA/CA-1 (10% Variation) 3.21%
Impairment Risk
Hydric Assets [Member] | Apucaraninha [Member]  
IfrsStatementLineItems [Line Items]  
Discount rate 5.43%
RA/CA-1 8.91%
RA/CA-1 (5% Variation) 8.25%
RA/CA-1 (10% Variation) 7.61%
Impairment Risk
Hydric Assets [Member] | Maua [Member]  
IfrsStatementLineItems [Line Items]  
Discount rate 5.43%
RA/CA-1 127.13%
RA/CA-1 (5% Variation) 122.18%
RA/CA-1 (10% Variation) 117.41%
Impairment Risk
Hydric Assets [Member] | Cavernoso I I [Member]  
IfrsStatementLineItems [Line Items]  
Discount rate 5.43%
RA/CA-1 43.05%
RA/CA-1 (5% Variation) 39.63%
RA/CA-1 (10% Variation) 36.34%
Impairment Risk
Hydric Assets [Member] | Bela Vista [Member]  
IfrsStatementLineItems [Line Items]  
Discount rate 7.66%
RA/CA-1 75.43%
RA/CA-1 (5% Variation) 69.25%
RA/CA-1 (10% Variation) 63.43%
Impairment Risk
Hydric Assets [Member] | Elejor [Member]  
IfrsStatementLineItems [Line Items]  
Discount rate 7.00%
RA/CA-1 7.21%
RA/CA-1 (5% Variation) 4.67%
RA/CA-1 (10% Variation) 2.22%