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Other Current Assets and Other Current Financial Assets - Summary of Prepaid Expenses (Detail) - MXN ($)
$ in Millions
Dec. 31, 2017
Dec. 31, 2016
Prepaid expenses [Abstract]    
Advances for inventories $ 1,243 $ 2,704
Advertising and promotional expenses paid in advance 367 141
Advances to service suppliers 142 227
Prepaid insurance 39 49
Others 58 23
Total $ 1,849 $ 3,144