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Inventories, net (Tables)
 12 Months Ended
Dec. 31, 2019
Text block [abstract]  
Summary of Analysis of Inventories
An analysis of inventories at December 31, 2018 and 2019 is as follows:
 
   2018   
2019
 
Mobile phones, accessories, computers, TVs, cards and other materials
  Ps.43,723,492   
Ps.
43,954,616
 
Less: Reserve for obsolete and slow-moving inventories
   (3,418,130)   
 
(2,852,604
) 
  
 
 
   
 
 
 
Total
  Ps.40,305,362   
Ps.
41,102,012