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20 Financial assets at amortized cost (Details) - ARS ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
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Summary of financial assets at amortized cost [line items] |  |
Total Current | $ 78 |
Government bonds [member] |  |
Summary of financial assets at amortized cost [line items] |  |
Total Current | $ 239 | $ 0

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- Definition Schedule of summary of financial assets at amortized cost line items. + References No definition available. + Details
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Namespace Prefix: | edn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of current financial assets measured at amortised cost. [Refer: Financial assets at amortised cost] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2020-01-01 -Paragraph 8 -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_8_f&doctype=Standard -URIDate 2020-01-01 + Details
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Balance Type: | debit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |