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Provision for de-characterization of dam structures and asset retirement obligations (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
IfrsStatementLineItems [Line Items]    
Balance at the beginning $ 3,312  
Disbursements (273) $ (127)
Translation adjustment 239  
Balance at the ending 3,060 3,312
De Characterization Of Upstream Dams [Member]    
IfrsStatementLineItems [Line Items]    
Balance at the beginning 3,299 3,464
Additional provision 153 72
Disbursements (458) (347)
Present value valuation 199 (139)
Translation adjustment 258 249
Balance at the ending $ 3,451 $ 3,299