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Derivative Financial Instruments - Additional Information (Detail) - MXN ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of detailed information about financial instruments [line items] |  |  |
Changes in fair value of derivative financial instruments gain (loss) | $ 12,378,193 | $ 4,432,023 | $ (4,686,407)
Derivatives [member] | Debt securities [member] |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Weighted-average interest rate | 3.50% | (3.80%) | 4.10%

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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 2020-01-01 -Paragraph 20 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_20&doctype=Standard -URIDate 2020-01-01 + Details
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- Details
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