7 Interest in joint venture (Details) - ARS ($) $ in Millions	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Summary of interests in joint ventures [line items]
Equity attributable to the owners	$ 11	$ 15
SACME [member]
Summary of interests in joint ventures [line items]
Percentage interest held in capital stock and votes	50.00%
Equity attributable to the owners	$ 11	$ 15

Schedule of summary of interests in joint ventures line Items.

No definition available.

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- Definition

The amount of investments in joint ventures in an entity's separate financial statements. [Refer: Joint ventures [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2020-01-01
-Paragraph 10
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=27&code=ifrs-tx-2020-en-r&anchor=para_10&doctype=Standard
-URIDate 2020-01-01

+ Details

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- Definition

The proportion of ownership interests in a subsidiary held by non-controlling interests. [Refer: Subsidiaries [member]; Non-controlling interests]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2020-01-01
-Paragraph 12
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2020-en-r&anchor=para_12_c&doctype=Standard
-URIDate 2020-01-01

+ Details

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- Details

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