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Other Current Assets and Other Current Financial Assets - Prepaid Expenses (Details) - MXN ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure Of Prepaid Expense Current [abstract]      
Advances for inventories $ 2,110 $ 1,651  
Advertising and promotional expenses paid in advance 105 93  
Advances to service suppliers 81 30  
Prepaid leases 118 93  
Prepaid insurance 284 181  
Others 417 376  
Current prepaid expenses 3,115 2,424  
Prepaid advertising and promotional expenses $ 7,586 $ 7,471 $ 8,840