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Provision for de-characterization of dam structures and asset retirement obligations (Details Narrative)
R$ in Millions, $ in Millions
 1 Months Ended 12 Months Ended
Feb. 28, 2022
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2023
BRL (R$)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2023
BRL (R$)
Dec. 31, 2022
BRL (R$)
IfrsStatementLineItems [Line Items]              
Additional provision for investments $ 37            
Financial guarantees and insurance   $ 370 R$ 1,800        
Project term   15 years 15 years        
Other liabilities   $ 108   $ 96   R$ 527 R$ 500
Additional provisions       57     R$ 292
Losses in relation to the operational stoppage   $ 218   $ 269 $ 376    
Bottom of range [member]              
IfrsStatementLineItems [Line Items]              
Present value at a rate   6.14% 6.14%        
Top of range [member]              
IfrsStatementLineItems [Line Items]              
Present value at a rate   5.41% 5.41%