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13. Financial assets at fair value through profit or loss (Details) - ARS ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
SummaryOfFinancialAssetsAtFairValueThroughProfitOrLossLineItems [Line Items] |  |
Current | $ 3,381,550 | $ 4,278,008
Government bonds |  |
SummaryOfFinancialAssetsAtFairValueThroughProfitOrLossLineItems [Line Items] |  |
Current | 3,285,799 | 1,829,888
Money market funds |  |
SummaryOfFinancialAssetsAtFairValueThroughProfitOrLossLineItems [Line Items] |  |
Current | $ 95,751 | $ 2,448,120

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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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Data Type: | xbrli:stringItemType
Balance Type: | na
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfAssetsAxis=EDN_MoneyMarketFundMember
Namespace Prefix: |
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Balance Type: |
Period Type: |