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14. Financial assets at amortized cost (Details) - ARS ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
SummaryOfFinancialAssetsAtAmortizedCostLineItems [Line Items]
Current	$ 1,208,770	$ 16,978
Government bonds
SummaryOfFinancialAssetsAtAmortizedCostLineItems [Line Items]
Current	0	16,978
Time deposits
SummaryOfFinancialAssetsAtAmortizedCostLineItems [Line Items]
Current	$ 1,208,770	$ 0

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Balance Type:	debit
Period Type:	instant

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

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- Details

Name:	ifrs-full_ClassesOfAssetsAxis=EDN_TimeDepositsMember
Namespace Prefix:
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Period Type: