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v3.21.1

35 Related-party transactions (Details) - ARS ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of transactions between related parties [line items] |  |  |
Related-party income | $ 43 | $ 27 | $ 6,555
PESA [member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Related-party income | 40 | 27 |
SACDE [member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Related-party income | 3 |  | 70
PESA [member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Related-party income |  |  | $ 23

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- Definition Information of income from related parties. + References No definition available. + Details
Name: | edn_IncomeFromRelatedParties
Namespace Prefix: | edn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | dei_LegalEntityAxis=edn_PESA1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | dei_LegalEntityAxis=edn_SACDEMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=edn_PESA2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |