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Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Detail) - MXN ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 29, 2017
Dec. 31, 2016
Cash And Cash Equivalents [Abstract]          
Cash $ 3,593,756 $ 1,912,047 $ 1,616,408    
Investments of cash surpluses 3,897,894 3,894,166 5,855,824    
Cash equivalents designated for expenditure, held in trust 8,543 345,244 257,911    
Total $ 7,500,193 $ 6,151,457 $ 7,730,143 $ 8,543 $ 5,188,138