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15. Financial assets at amortized cost (Details) - ARS ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
SummaryOfFinancialAssetsAtAmortizedCostLineItems [Line Items]
Current	$ 0	$ 1,858,726
Government bonds
SummaryOfFinancialAssetsAtAmortizedCostLineItems [Line Items]
Current	0	0
Time deposits
SummaryOfFinancialAssetsAtAmortizedCostLineItems [Line Items]
Current	$ 0	$ 1,858,726

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- References

No definition available.

+ Details

Name:	EDN_FinancialAssetsAtAmortisedCostCurrent
Namespace Prefix:	EDN_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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No definition available.

+ Details

Name:	EDN_SummaryOfFinancialAssetsAtAmortizedCostLineItems
Namespace Prefix:	EDN_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Details

Name:	ifrs-full_ClassesOfAssetsAxis=EDN_GovernmentBondsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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- Details

Name:	ifrs-full_ClassesOfAssetsAxis=EDN_TimeDepositsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: