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15 Financial instruments (Details 3) - ARS ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Disclosure of detailed information about financial instruments [line items] |  |  |
Trade receivables |  | $ 14,151 | $ 16,961
Group 1 [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Trade receivables | [1] | 10,437 | 14,376
Group 2 [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Trade receivables | [2] | 864 | 721
Group 3 [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Trade receivables | [3] | $ 2,850 | $ 1,864
[1] | Relates to customers with debt to become due.
[2] | Relates to customers with past due debt from 0 to 3 months.
[3] | Relates to customers with past due debt from 3 to 12 months.

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- Definition The amount of current trade receivables and current other receivables. [Refer: Current trade receivables; Other current receivables] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 54 -Subparagraph h -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_54_h&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 78 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_78_b&doctype=Standard -URIDate 2020-01-01 + Details
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