| Line Item | Dec 31, 2025 | Dec 31, 2024 | Dec 31, 2023 | Dec 31, 2022 | Dec 31, 2021 | Dec 31, 2020 | Dec 31, 2019 | Dec 31, 2018 | Dec 31, 2017 |
|---|---|---|---|---|---|---|---|---|---|
| Profit or loss [abstract] | |||||||||
| Revenue | |||||||||
| Energy purchases | |||||||||
| Distribution margin | |||||||||
| Transmission and distribution expenses | |||||||||
| Gross profit | |||||||||
| Selling expenses | |||||||||
| Administrative expenses | |||||||||
| Non-Operating Income (Expense) | |||||||||
| Operating Income | |||||||||
| Income (Loss) from interest in joint ventures | |||||||||
| Operating result | |||||||||
| Agreement on the Regularization of Obligations | |||||||||
| Interest Income | |||||||||
| Financial costs | |||||||||
| Other financial results | |||||||||
| Net financial costs | |||||||||
| Monetary gain (RECPAM) | |||||||||
| Income before taxes | |||||||||
| Income tax | |||||||||
| Income for the year | |||||||||
| Other comprehensive income | |||||||||
| Other Comprehensive Income (Loss) | |||||||||
| Tax effect of actuarial profit (loss) on benefit plans | |||||||||
| Total other comprehensive results | |||||||||
| Comprehensive income for the year attributable to: | |||||||||
| Net Income |