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Derivative Financial Instruments - Additional Information (Details) (Detail) - MXN ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Disclosure of detailed information about financial instruments [line items] |  |  |
changes in fair value of derivative financial instruments gain (loss) | $ (4,686,407) | $ 8,192,567 | $ (9,622,233)
Derivatives [member] | Debt securities [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
weighted-average interest rate | 4.10% | 4.00% | 3.70%

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- Definition Weighted average interest rate. + References No definition available. + Details
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- Definition Adjustments for gains (losses) on changes in the fair value of derivatives to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: At fair value [member]; Derivatives [member]; Profit (loss)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2018-01-01 -Paragraph 20 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2018-03-01&anchor=para_20&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Details
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- Details
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