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v3.19.1

35. Related-party transactions (Details) - ARS ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | ---
SummaryOfRelatedpartyTransactionsLineItems [Line Items] |  |  |
Related-party income | $ 44,303 | $ 4,263 | $ 18,608
CYCSA |  |  |
SummaryOfRelatedpartyTransactionsLineItems [Line Items] |  |  |
Related-party income | 0 | 0 | 17,686
PESA |  |  |
SummaryOfRelatedpartyTransactionsLineItems [Line Items] |  |  |
Related-party income | 149 | 0 | 0
PESA |  |  |
SummaryOfRelatedpartyTransactionsLineItems [Line Items] |  |  |
Related-party income | 11,161 | 4,263 | 0
SACDE |  |  |
SummaryOfRelatedpartyTransactionsLineItems [Line Items] |  |  |
Related-party income | 32,993 | 0 | 0
Transener |  |  |
SummaryOfRelatedpartyTransactionsLineItems [Line Items] |  |  |
Related-party income | 0 | 0 | 369
Transba |  |  |
SummaryOfRelatedpartyTransactionsLineItems [Line Items] |  |  |
Related-party income | $ 0 | $ 0 | $ 553

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- References No definition available. + Details
Name: | EDN_IncomeFromRelatedParties
Namespace Prefix: | EDN_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | EDN_SummaryOfRelatedpartyTransactionsLineItems
Namespace Prefix: | EDN_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

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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_PESA2Member
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: |

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

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