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Trade receivables (Details) - ARS ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
IfrsStatementLineItems [Line Items]    
Current trade receivables $ 27,991 $ 34,212
Billed sales of electricity member    
IfrsStatementLineItems [Line Items]    
Current trade receivables 16,012 29,292
Receivables in litigation member    
IfrsStatementLineItems [Line Items]    
Current trade receivables 287 493
Allowance for impairment of trade receivables member    
IfrsStatementLineItems [Line Items]    
Current trade receivables (4,634) (11,700)
Subtotal member    
IfrsStatementLineItems [Line Items]    
Current trade receivables 11,665 18,085
Unbilled sales of electricity member    
IfrsStatementLineItems [Line Items]    
Current trade receivables 15,333 15,377
P b a and c a b a government credit member    
IfrsStatementLineItems [Line Items]    
Current trade receivables 991 746
Fee payable member    
IfrsStatementLineItems [Line Items]    
Current trade receivables $ 2 $ 4