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Schedule of trade receivables (Details) - ARS ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
IfrsStatementLineItems [Line Items]    
Current trade receivables $ 17,563 $ 21,352
Billed sales of electricity member    
IfrsStatementLineItems [Line Items]    
Current trade receivables 15,037 18,565
Framework agreement member    
IfrsStatementLineItems [Line Items]    
Current trade receivables 14
Receivables in litigation member    
IfrsStatementLineItems [Line Items]    
Current trade receivables 253 452
Allowance for impairment of trade receivables member    
IfrsStatementLineItems [Line Items]    
Current trade receivables (6,006) (6,948)
Subtotal member    
IfrsStatementLineItems [Line Items]    
Current trade receivables 9,284 12,083
Unbilled sales of electricity member    
IfrsStatementLineItems [Line Items]    
Current trade receivables 7,894 8,769
P b a and c a b a government credit member    
IfrsStatementLineItems [Line Items]    
Current trade receivables 383 497
Fee payable member    
IfrsStatementLineItems [Line Items]    
Current trade receivables $ 2 $ 3