XML 160 R139.htm IDEA: XBRL DOCUMENT v3.22.1
Financial Instruments - Sensitivity Analysis of Interest Rate Risks (Details) - Interest rate risk - MXN ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Interest rate swap | FEMSA Entity Excluding Coca-Cola FEMSA      
Disclosure of Interest Rate Risk Exposure [line items]      
Effect on Equity $ (212) $ (354) $ (432)
Change in interest rate (100.00%) (100.00%) (100.00%)
Interest rate swap | Coca-Cola FEMSA      
Disclosure of Interest Rate Risk Exposure [line items]      
Effect on Equity     $ (37)
Change in interest rate     (100.00%)
Unhedged Portion Bank Loans [member]      
Disclosure of Interest Rate Risk Exposure [line items]      
Change in interest rate 100.00% 100.00% 100.00%
Effect on profit loss $ (627) $ (110) $ (50)