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Basis of Preparation - Summary of Reconciliation to discounted the operating lease commitments (Detail) - MXN ($) $ in Millions | Dec. 31, 2019 | Jan. 01, 2019
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Disclosure of basis of preparation of financial statements [abstract] |  |
Operating lease commitments |  | $ 2,455
Discounted operating lease commitments |  | 1,976
Less: Commitments relating to short-term leases and low-value assets |  | (179)
Add: Commitments relating to leases previously classified as finance leases |  | 0
Lease liabilities at the beginning of the period | $ 1,383 | $ 1,797

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- Definition The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2019-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2019-en-r&anchor=para_47_b&doctype=Standard -URIDate 2019-03-27 + Details
Name: | ifrs-full_LeaseLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Disclosure of basis of preparation of financial statements. + References No definition available. + Details
Name: | kof_DisclosureOfBasisOfPreparationOfFinancialStatementsAbstract
Namespace Prefix: | kof_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Discounted operating lease commitements. + References No definition available. + Details
Name: | kof_DiscountedOperatingLeaseCommitments
Namespace Prefix: | kof_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Lease Commitments For Short term Leases And Low Value Assets For Which Recognition Exemption Has Been Used. + References No definition available. + Details
Name: | kof_LeaseCommitmentsForShortTermLeasesAndLowValueAssetsForWhichRecognitionExemptionHasBeenUsed
Namespace Prefix: | kof_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Lease commitements relating to leases previously classified as finance leases. + References No definition available. + Details
Name: | kof_LeaseCommitmentsRelatingToLeasesPreviouslyClassifiedAsFinanceLeases
Namespace Prefix: | kof_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Operating lease commitements. + References No definition available. + Details
Name: | kof_OperatingLeaseCommitments
Namespace Prefix: | kof_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant