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v3.22.1

Employee Benefits - Expected Future Benefit Payments (Details) $ in Millions | Dec. 31, 2021 MXN ($)
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Disclosure of defined benefit plans [line items] |
2022 | $ 977
2023 | 497
2024 | 520
2025 | 587
2026 | 583
2027 to 2031 | 3,882
Pension and retirement plans |
Disclosure of defined benefit plans [line items] |
2022 | 754
2023 | 317
2024 | 346
2025 | 421
2026 | 419
2027 to 2031 | 3,039
Seniority premiums |
Disclosure of defined benefit plans [line items] |
2022 | 201
2023 | 156
2024 | 149
2025 | 140
2026 | 137
2027 to 2031 | 681
Post retirement medical services |
Disclosure of defined benefit plans [line items] |
2022 | 22
2023 | 23
2024 | 25
2025 | 26
2026 | 27
2027 to 2031 | $ 162

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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: | fmx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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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: | fmx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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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: | fmx_
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: | fmx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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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: |

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