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Taxes - Schedule of Deferred Tax related to Other Comprehensive Income (AOCI) (Detail) - MXN ($) $ in Millions | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Major components of tax expense (income) [abstract] |  |
Unrealized loss on derivative financial instruments | $ (36) | $ 361
Remeasurements of the net defined benefit liability | (560) | (132)
Total deferred tax loss related to AOCI | $ (596) | $ 229

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- Definition Deferred tax expense (income) relating to components of accumulated other comprehensive income. + References No definition available. + Details
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- Definition Deferred Tax Relating To Remeasurements Of Defined Benefit Liability accumulated Other Comprehensive Income + References No definition available. + Details
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- Definition Unrealized Losses On Derivative Financial Instruments Accumulated Other Comprehensive Income + References No definition available. + Details
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- References No definition available. + Details
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