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Property, plant & equipment - Additional Information (Detail) $ in Millions, $ in Millions | Dec. 31, 2020 MXN ($) | Dec. 31, 2019 MXN ($) | Dec. 31, 2018 USD ($)
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Property, plant and equipment [abstract] |  |  |
Outstanding payment to suppliers in additions to property plant and equipment | $ 289 | $ 610 | $ 415

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- References No definition available. + Details
Name: | ifrs-full_PropertyPlantAndEquipmentAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Outstanding payment to suppliers in additions to property plant and equipment + References No definition available. + Details
Name: | kof_OutstandingPaymentToSuppliersInAdditionsToPropertyPlantAndEquipment
Namespace Prefix: | kof_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant