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Operating segments (Details) - ARS ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Statement [Line Items]      
Revenues $ 101,392,706 $ 111,186,661 $ 112,047,140
Cost Of Sales (53,322,891) (57,585,906) (49,441,324)
Administrative and selling expenses (7,467,141) (8,087,079) (8,740,168)
Administrative And Selling Expenses 7,467,141 8,087,079 8,740,168
Other Operating Income 35,913,509 21,269,586 41,452,962
Other Operating Expenses (602,151) (1,573,218) (1,343,937)
Impairment Of Property, Plant And Equipment And Intangible Assets (14,023,567) (15,125,724) (11,808,900)
Operating Income 61,890,465 50,084,320 82,165,773
Other (expenses) Income (4) (42,812,490) (51,346,313) (61,707,762)
Net Income (loss) For The Segment 19,077,975 (1,261,993) 20,458,011
Share In The Net Income For The Segment 19,077,975 (1,261,993) 20,458,011
Other Operating Income (35,913,509) (21,269,586) (41,452,962)
Electric Power Generation from Conventional Sources      
Statement [Line Items]      
Revenues 80,676,265 86,295,219 87,415,727
Cost Of Sales (44,936,903) (49,060,790) (41,752,822)
Administrative and selling expenses (6,764,320) (7,035,993) (7,513,849)
Administrative And Selling Expenses 6,764,320 7,035,993 7,513,849
Other Operating Income 34,097,252 20,407,331 40,168,359
Other Operating Expenses (594,178) (1,593,813) (948,453)
Impairment Of Property, Plant And Equipment And Intangible Assets (5,970,504) (15,125,724) (11,808,900)
Operating Income 56,507,612 33,886,230 65,560,062
Other (expenses) Income (4) (54,469,248) (45,560,031) (47,890,568)
Net Income (loss) For The Segment 2,038,364 (11,673,801) 17,669,494
Share In The Net Income For The Segment 2,038,364 (11,673,801) 17,669,494
Other Operating Income (34,097,252) (20,407,331) (40,168,359)
Electric Power Generation from Renewable Resources      
Statement [Line Items]      
Revenues 18,261,198 22,101,809 21,180,050
Cost Of Sales (6,486,559) (6,581,565) (5,542,540)
Administrative and selling expenses (702,821) (1,051,086) (1,226,319)
Administrative And Selling Expenses 702,821 1,051,086 1,226,319
Other Operating Income 1,771,992 823,626 1,284,603
Other Operating Expenses (7,813) 20,595 (380,641)
Impairment Of Property, Plant And Equipment And Intangible Assets (8,053,063) 0 0
Operating Income 4,782,934 15,313,379 15,315,153
Other (expenses) Income (4) (296,049) (4,269,783) (13,689,301)
Net Income (loss) For The Segment 4,486,885 11,043,596 1,625,852
Share In The Net Income For The Segment 4,486,885 11,043,596 1,625,852
Other Operating Income (1,771,992) (823,626) (1,284,603)
Natural Gas Transport and Distribution (1) (2)      
Statement [Line Items]      
Revenues 53,026,157 59,960,850 84,674,960
Cost Of Sales (43,060,520) (46,179,641) (69,274,477)
Administrative and selling expenses (9,310,387) (12,106,790) (18,477,966)
Administrative And Selling Expenses 9,310,387 12,106,790 18,477,966
Other Operating Income 1,366,613 1,959,395 2,346,097
Other Operating Expenses (471,091) (453,332) (631,599)
Impairment Of Property, Plant And Equipment And Intangible Assets 0 0 0
Operating Income 1,550,772 3,180,482 (1,362,985)
Other (expenses) Income (4) (4,035,737) (8,772,675) (306,482)
Net Income (loss) For The Segment (2,484,965) (5,592,193) (1,669,467)
Share In The Net Income For The Segment 290,071 (939,071) 514,046
Other Operating Income (1,366,613) (1,959,395) (2,346,097)
Other      
Statement [Line Items]      
Revenues 1,752,484 3,410,912 5,186,557
Cost Of Sales (1,476,289) (2,910,682) (4,202,050)
Administrative and selling expenses 0 0 0
Administrative And Selling Expenses 0 0 0
Other Operating Income 44,265 38,630 2,482
Other Operating Expenses (160) 0 (14,843)
Impairment Of Property, Plant And Equipment And Intangible Assets 0 0 0
Operating Income 320,300 538,860 972,146
Other (expenses) Income (4) 11,939,140 (344,818) (148,720)
Net Income (loss) For The Segment 12,259,440 194,042 823,426
Share In The Net Income For The Segment 12,262,655 307,283 648,619
Other Operating Income (44,265) (38,630) (2,482)
Adjustments and Eliminations      
Statement [Line Items]      
Revenues (52,323,398) (60,582,129) (86,410,154)
Cost Of Sales 42,637,380 47,146,772 71,330,565
Administrative and selling expenses (9,310,387) (12,106,790) (18,477,966)
Administrative And Selling Expenses 9,310,387 12,106,790 18,477,966
Other Operating Income 1,366,613 1,959,396 2,348,579
Other Operating Expenses 471,091 453,332 631,599
Impairment Of Property, Plant And Equipment And Intangible Assets 0 0 0
Operating Income (1,271,153) (2,834,631) 1,681,397
Other (expenses) Income (4) 4,049,404 7,600,994 327,309
Net Income (loss) For The Segment 2,778,251 4,766,363 2,008,706
Share In The Net Income For The Segment 0 0 0
Other Operating Income $ (1,366,613) $ (1,959,396) $ (2,348,579)