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Financial risk management (Details 1) - ARS ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
IfrsStatementLineItems [Line Items]    
Net position assets/(liabilities) $ (75,990) $ (115,359)
USD [Member]    
IfrsStatementLineItems [Line Items]    
Net position assets/(liabilities) (75,655) (112,943)
CNY [Member]    
IfrsStatementLineItems [Line Items]    
Net position assets/(liabilities) (618)
EUR [Member]    
IfrsStatementLineItems [Line Items]    
Net position assets/(liabilities) (107) (1,169)
CHF [Member]    
IfrsStatementLineItems [Line Items]    
Net position assets/(liabilities) $ (228) $ (629)