v3.26.1
Intangible Assets - Sensitivity to Changes in Assumptions (Details)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2025
MXN ($)
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Risk premium basis points 0.0100 0.0050
Impairment charge on goodwill   $ 0
Change in WACC 0.20% 0.20%
Change in Expected Sales Growth Rates CAGR 0.50% 0.50%
Effect on Valuation   Passes by 0.4x
Mexico    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Change in WACC 60.00% 60.00%
Mexico | Aggregate cash-generating units for which amount of goodwill or intangible assets with indefinite useful lives is not significant | Coca-Cola FEMSA    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Change in Expected Sales Growth Rates CAGR (1.00%) (1.00%)
Effect on Valuation   Passes by 3.7x
Brazil    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Change in WACC 90.00% 90.00%
Brazil | Aggregate cash-generating units for which amount of goodwill or intangible assets with indefinite useful lives is not significant | Coca-Cola FEMSA    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Change in Expected Sales Growth Rates CAGR (1.00%) (1.00%)
Effect on Valuation   Passes by 1.8x
Colombia    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Change in WACC 120.00% 120.00%
Colombia | Aggregate cash-generating units for which amount of goodwill or intangible assets with indefinite useful lives is not significant | Coca-Cola FEMSA    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Change in Expected Sales Growth Rates CAGR (1.00%) (1.00%)
Effect on Valuation   Passes by 3.2x
Argentina    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Change in WACC 230.00% 230.00%
Argentina | Aggregate cash-generating units for which amount of goodwill or intangible assets with indefinite useful lives is not significant | Coca-Cola FEMSA    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Change in Expected Sales Growth Rates CAGR (1.00%) (1.00%)
Effect on Valuation   Passes by 3.7x
Guatemala    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Change in WACC 70.00% 70.00%
Guatemala | Aggregate cash-generating units for which amount of goodwill or intangible assets with indefinite useful lives is not significant | Coca-Cola FEMSA    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Change in Expected Sales Growth Rates CAGR (1.00%) (1.00%)
Effect on Valuation   Passes by 5.7x
Costa Rica    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Change in WACC 70.00% 70.00%
Costa Rica | Aggregate cash-generating units for which amount of goodwill or intangible assets with indefinite useful lives is not significant | Coca-Cola FEMSA    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Change in Expected Sales Growth Rates CAGR (1.00%) (1.00%)
Effect on Valuation   Passes by 4.6x
Nicaragua    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Change in WACC 340.00% 340.00%
Nicaragua | Aggregate cash-generating units for which amount of goodwill or intangible assets with indefinite useful lives is not significant | Coca-Cola FEMSA    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Change in Expected Sales Growth Rates CAGR (1.00%) (1.00%)
Effect on Valuation   Passes by 1.4x
Panama    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Change in WACC 90.00% 90.00%
Panama | Aggregate cash-generating units for which amount of goodwill or intangible assets with indefinite useful lives is not significant | Coca-Cola FEMSA    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Change in Expected Sales Growth Rates CAGR (1.00%) (1.00%)
Effect on Valuation   Passes by 2.1x
Uruguay    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Change in WACC 20.00% 20.00%
Uruguay | Aggregate cash-generating units for which amount of goodwill or intangible assets with indefinite useful lives is not significant | Coca-Cola FEMSA    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Change in Expected Sales Growth Rates CAGR (1.00%) (1.00%)
Effect on Valuation   Passes by 3.4x
United States | Aggregate cash-generating units for which amount of goodwill or intangible assets with indefinite useful lives is not significant    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Change in Expected Sales Growth Rates CAGR 0.50% 0.50%
Effect on Valuation   Passes by -0.12x