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Valuation of derivatives interest cost from labor obligations and other financial items net - Schedule of Valuation of Derivatives and Other Financial Items (Detail) $ in Thousands, $ in Millions | 12 Months Ended
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Dec. 31, 2018 MXN ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 MXN ($) | Dec. 31, 2016 MXN ($)
Disclosure of detailed information about financial instruments [abstract] |  |  |  |
(Loss) gain in valuation of derivatives, net | $ (4,686,407) |  | $ 8,192,567 | $ (9,622,233)
Capitalized interest expense (Note 10 d) | 2,020,288 |  | 2,875,034 | 2,861,307
Commissions | (1,901,473) |  | (1,263,701) | (2,034,972)
Interest cost of labor obligations (Note 17) | (9,968,526) |  | (8,722,611) | (9,178,513)
Interest expense on taxes | (555,921) |  | (1,503,981) | (245,922)
Dividend received (Note 4) | 2,605,333 |  | 2,385,559 | 5,740,092
Gain on net monetary positions (Note 2i, c) | 4,429,145 | $ 225 |  |
Other financial cost | (2,118,755) |  | (3,906,627) | (3,745,600)
Valuation of derivatives and other financial items | $ (10,176,316) | $ (517) | $ (1,943,760) | $ (16,225,841)

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- Definition Interest costs of labor obligations. + References No definition available. + Details
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- Definition Interest expense on taxes. + References No definition available. + Details
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- Definition Net finance cost on gross debt including related derivatives. + References No definition available. + Details
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- Definition Valuation of derivatives, interest cost from labor obligations and other financial items, net. + References No definition available. + Details
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- Definition The amount of expense relating to fees and commissions. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_85&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The gains (losses) representing the difference resulting from the restatement of non-monetary assets, owners' equity and items in the statement of comprehensive income and the adjustment of index linked assets and liabilities in hyperinflationary reporting. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 29 -IssueDate 2018-01-01 -Paragraph 9 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=29&date=2018-03-01&anchor=para_9&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The gains resulting from change in the fair value of derivatives recognised in profit or loss. [Refer: Derivatives [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_85&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of interest costs that an entity incurs in connection with the borrowing of funds that are directly attributable to the acquisition, construction or production of a qualifying asset and which form part of the cost of that asset. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_112_c&doctype=Standard -URIDate 2018-03-16 + Details
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