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Trade Notes and Accounts Receivable, Net (Details) - MXN ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
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Trade Notes and Accounts Receivable, Net |  |  |
Non-interest bearing notes received from customers as deposits and advances mainly in connection with annual ("upfront basis") and from time to time ("scatter basis") prepayments | $ 17,309,800 | $ 18,716,562 |
Trade accounts receivable | 11,074,352 | 10,056,382 |
Allowance for doubtful accounts | (3,657,079) | (3,866,492) | $ (3,679,505)
Total trade and other current receivables | $ 24,727,073 | $ 24,906,452 |

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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 2017-01-01 -Paragraph 54 -Subparagraph h -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_h&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 78 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_78_b&doctype=Standard -URIDate 2017-03-09 + Details
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