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Post-Employment and Other Non-current Employee Benefits - Summary of Assumptions, Amounts of Benefits Expected to be Paid (Detail) $ in Millions | Dec. 31, 2018 MXN ($)
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Pension and retirement plans [member] |
Disclosure of defined benefit plans [line items] |
2019 | $ 314
2020 | 230
2021 | 203
2022 | 182
2023 | 260
2024 to 2028 | 1,562
Seniority premiums [member] |
Disclosure of defined benefit plans [line items] |
2019 | 39
2020 | 30
2021 | 28
2022 | 27
2023 | 26
2024 to 2028 | $ 139

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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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Balance Type: | na
Period Type: | duration

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- Definition Defined benefit plan expected future benefit payments in year five. + References No definition available. + Details
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Namespace Prefix: | kof_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Defined benefit plan expected future benefit payments year four. + References No definition available. + Details
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Namespace Prefix: | kof_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Defined benefit plan expected future benefit payments year three. + References No definition available. + Details
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Namespace Prefix: | kof_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Defined benefit plan expected future benefit payments year two. + References No definition available. + Details
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Namespace Prefix: | kof_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Defined benefit plan expected future benefit Payments five fiscal years thereafter. + References No definition available. + Details
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Namespace Prefix: | kof_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Defined benefit plan expected future benefit payments next twelve months. + References No definition available. + Details
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Namespace Prefix: | kof_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |