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v3.21.1

35 Related-party transactions (Details 1) - 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 expense | $ (353) | $ (328) | $ (395)
PESA [member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Related-party expense | (206) | (185) | (180)
SACME [member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Related-party expense | (102) | (113) | (171)
OSVA [member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Related-party expense | (27) | (27) | (41)
SB&WM Abogados [member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Related-party expense | (13) |  |
FIDUS [member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Related-party expense | (4) | (1) |
ABELOVICH, POLANO & ASSOC. [member] |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Related-party expense | $ (1) | $ (2) | $ (3)

X
- Definition The amount of related parties expenses. + References No definition available. + Details
Name: | edn_RelatedPartiesExpenses
Namespace Prefix: | edn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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

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

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

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

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

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

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