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Operating segments (Tables)
 12 Months Ended
Dec. 31, 2018
Operating segments  
Schedule of geographic segments

 

 

 

 

 

 

 

 

 

 

 

    

2018

    

2017

    

2016

Operating revenues:

 

 

  

 

 

  

 

 

  

Domestic (Mexico)

 

Ps.

18,493,476

 

Ps.

17,272,946

 

Ps.

15,694,044

International:

 

 

  

 

 

  

 

 

  

United States of America and Central America*

 

 

8,811,674

 

 

7,515,240

 

 

7,777,516

Total operating revenues

 

Ps.

27,305,150

 

Ps.

24,788,186

 

Ps.

23,471,560

*United States of America represents approximately 32%,  30% and 32% of total revenues from external customers in 2018, 2017 and 2016, respectively.