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35 Related-party transactions (Details) - 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 income	$ 43	$ 27	$ 6,555
PESA [member]
Disclosure of transactions between related parties [line items]
Related-party income	40	27
SACDE [member]
Disclosure of transactions between related parties [line items]
Related-party income	3		70
PESA [member]
Disclosure of transactions between related parties [line items]
Related-party income			$ 23

X

- Definition

Information of income from related parties.

+ References

No definition available.

+ Details

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Namespace Prefix:	edn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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_PESA1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	dei_LegalEntityAxis=edn_SACDEMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	dei_LegalEntityAxis=edn_PESA2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: