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20 Financial assets at amortized cost (Details) - ARS ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
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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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: