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Intangible Assets - Sensitivity to Changes in Assumptions (Detail) | 12 Months Ended
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Dec. 31, 2020 MXN ($) item
Disclosure of sensitivity analysis for actuarial assumptions [line items] |
Risk premium basis points | item | 1.00
Impairment charge on goodwill | $ 0
Change in WACC | 0.20%
Change in Sales Growth CAGR | 0.50%
Effect on Valuation | Passes by 1.34x
Coca-Cola FEMSA [member] |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |
Risk premium basis points | 1.00
Impairment charge on goodwill | $ 0
FEMSA Comercio - Health Division [member] |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |
Total carrying amount of goodwill | $ 6,681,000,000
Mexico [member] | Cash Generating Units [member] | Coca-Cola FEMSA [member] |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |
Change in WACC | 0.40%
Change in Sales Growth CAGR | 1.00%
Effect on Valuation | Passes by 4.8x
Colombia [member] | Cash Generating Units [member] | Coca-Cola FEMSA [member] |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |
Change in WACC | 0.40%
Change in Sales Growth CAGR | 1.00%
Effect on Valuation | Passes by 1x
Costa Rica [member] | Cash Generating Units [member] | Coca-Cola FEMSA [member] |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |
Change in WACC | 1.10%
Change in Sales Growth CAGR | 1.00%
Effect on Valuation | Passes by 2.1x
Guatemala [member] | Cash Generating Units [member] | Coca-Cola FEMSA [member] |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |
Change in WACC | 0.60%
Change in Sales Growth CAGR | 1.00%
Effect on Valuation | Passes by 29.7x
Nicaragua [member] | Cash Generating Units [member] | Coca-Cola FEMSA [member] |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |
Change in WACC | 1.70%
Change in Sales Growth CAGR | 1.00%
Effect on Valuation | Passes by 1.1x
Panama [member] | Cash Generating Units [member] | Coca-Cola FEMSA [member] |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |
Change in WACC | 0.30%
Change in Sales Growth CAGR | 1.00%
Effect on Valuation | Passes by 6.9x
Argentina [member] | Cash Generating Units [member] | Coca-Cola FEMSA [member] |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |
Change in WACC | 3.00%
Change in Sales Growth CAGR | 1.00%
Effect on Valuation | Passes by 6.7x
Brazil [member] | Cash Generating Units [member] | Coca-Cola FEMSA [member] |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |
Change in WACC | 0.60%
Change in Sales Growth CAGR | 1.00%
Effect on Valuation | Passes by 1.8x
Uruguay [member] | Cash Generating Units [member] | Coca-Cola FEMSA [member] |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |
Change in WACC | 0.40%
Change in Sales Growth CAGR | 1.00%
Effect on Valuation | Passes by 2x
United States [member] | Cash Generating Units [member] |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |
Risk premium basis points | 1.00
Change in Sales Growth CAGR | 0.50%
Effect on Valuation | Passes by 1.25x

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