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36. Related-party transactions (Details) - ARS ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of transactions between related parties [line items]
Related-party income	$ 22,012	$ 68,125	$ 6,555
PESA
Disclosure of transactions between related parties [line items]
Related-party income	337	230	0
PESA
Disclosure of transactions between related parties [line items]
Related-party income	0	17,162	6,555
SACDE
Disclosure of transactions between related parties [line items]
Related-party income	19,738	50,733	0
FIDUS
Disclosure of transactions between related parties [line items]
Related-party income	$ 1,937	$ 0	$ 0

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- References

No definition available.

+ Details

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Namespace Prefix:	EDN_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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- 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

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Namespace Prefix:	ifrs-full_
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- Details

Name:	dei_LegalEntityAxis=EDN_PESA1Member
Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

Name:	dei_LegalEntityAxis=EDN_PESA2Member
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_FIDUSMember
Namespace Prefix:
Data Type:	na
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