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Expenses by nature (Details) - ARS ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
IfrsStatementLineItems [Line Items]      
Transmission and distribution expenses $ 54,917 $ 56,708 $ 58,387
Selling expenses 23,669 22,391 31,872
Administrative expenses 18,052 14,505 15,730
Expenses by nature 96,638 93,604 105,989
Pension plans [member]      
IfrsStatementLineItems [Line Items]      
Administrative expenses 250 240 282
Expenses by nature 1,202 1,471 1,402
Communication expenses member      
IfrsStatementLineItems [Line Items]      
Administrative expenses 1 1 2
Expenses by nature 1,289 1,633 1,948
Allowance for impairment of trade and other receivables member      
IfrsStatementLineItems [Line Items]      
Administrative expenses
Expenses by nature 2,199 3,822 12,293
Supplies consumption member      
IfrsStatementLineItems [Line Items]      
Administrative expenses 329 414 434
Expenses by nature 3,587 4,824 5,954
Leases and insurance member      
IfrsStatementLineItems [Line Items]      
Administrative expenses 1,125 996 925
Expenses by nature 1,127 997 929
Security service member      
IfrsStatementLineItems [Line Items]      
Administrative expenses 176 227 101
Expenses by nature 1,428 1,298 1,096
Fees and remuneration for services member      
IfrsStatementLineItems [Line Items]      
Administrative expenses 6,640 5,038 4,521
Expenses by nature 22,625 22,447 22,365
Public relations and marketing member      
IfrsStatementLineItems [Line Items]      
Administrative expenses
Expenses by nature 1,896 226 56
Advertising and sponsorhip member      
IfrsStatementLineItems [Line Items]      
Administrative expenses
Expenses by nature 977 117 29
Reimbursements to personnel member      
IfrsStatementLineItems [Line Items]      
Administrative expenses 2 2 2
Expenses by nature 2 2 2
Depreciation of property plants and equipment member      
IfrsStatementLineItems [Line Items]      
Administrative expenses 1,750 1,705 1,839
Expenses by nature 18,193 17,728 19,113
Depreciation of right of use asset member      
IfrsStatementLineItems [Line Items]      
Administrative expenses 723 625 649
Expenses by nature 1,033 892 932
Directors and supervisory committee members fee member      
IfrsStatementLineItems [Line Items]      
Administrative expenses 69 69 84
Expenses by nature 69 69 84
E n r e penalties member      
IfrsStatementLineItems [Line Items]      
Administrative expenses
Expenses by nature 4,868 3,982 2,043
Taxes and charges member      
IfrsStatementLineItems [Line Items]      
Administrative expenses 138 166 187
Expenses by nature 3,366 3,577 4,459
Other member      
IfrsStatementLineItems [Line Items]      
Administrative expenses 44 53 27
Expenses by nature 46 55 27
Salaries and social security taxes member      
IfrsStatementLineItems [Line Items]      
Transmission and distribution expenses 22,553 21,995 22,797
Selling expenses 3,373 3,500 3,783
Administrative expenses 6,805 4,969 6,677
Expenses by nature 32,731 30,464 33,257
Pension plans [member]      
IfrsStatementLineItems [Line Items]      
Transmission and distribution expenses 828 1,062 960
Selling expenses 124 169 160
Communications expenses member      
IfrsStatementLineItems [Line Items]      
Transmission and distribution expenses 444 507 641
Selling expenses 844 1,125 1,305
Allowance for the impairment of trade and other receivables member      
IfrsStatementLineItems [Line Items]      
Transmission and distribution expenses
Selling expenses 2,199 3,822 12,293
Supplies consumption member      
IfrsStatementLineItems [Line Items]      
Transmission and distribution expenses 3,258 4,410 5,520
Selling expenses
Leases and insurance member      
IfrsStatementLineItems [Line Items]      
Transmission and distribution expenses 2
Selling expenses 2 1 2
Security service member      
IfrsStatementLineItems [Line Items]      
Transmission and distribution expenses 1,109 987 900
Selling expenses 143 84 95
Fees and remuneration for services member      
IfrsStatementLineItems [Line Items]      
Transmission and distribution expenses 10,245 11,361 11,463
Selling expenses 5,740 6,048 6,381
Public relations and marketing member      
IfrsStatementLineItems [Line Items]      
Transmission and distribution expenses
Selling expenses 1,896 226 56
Advertising and sponsorship member      
IfrsStatementLineItems [Line Items]      
Transmission and distribution expenses
Selling expenses 977 117 29
Reimbursements to personnel member      
IfrsStatementLineItems [Line Items]      
Transmission and distribution expenses
Selling expenses
Depreciation of property plants and equipments member      
IfrsStatementLineItems [Line Items]      
Transmission and distribution expenses 14,310 13,945 15,038
Selling expenses 2,133 2,078 2,236
Depreciation of right of use asset member      
IfrsStatementLineItems [Line Items]      
Transmission and distribution expenses 103 89 94
Selling expenses 207 178 189
Directors and supervisory committee members fees member      
IfrsStatementLineItems [Line Items]      
Transmission and distribution expenses
Selling expenses
E n r e penalties member      
IfrsStatementLineItems [Line Items]      
Transmission and distribution expenses 2,065 2,351 972
Selling expenses 2,803 1,631 1,071
Taxes and charges member      
IfrsStatementLineItems [Line Items]      
Transmission and distribution expenses
Selling expenses 3,228 3,411 4,272
Other expenses by nature member      
IfrsStatementLineItems [Line Items]      
Transmission and distribution expenses 2 1
Selling expenses $ 1