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Depreciation and amortization (Tables)
 12 Months Ended
Dec. 31, 2017
Disclosure Of Depreciation And Amortization Expense [Abstract]  
Disclosure Of Depreciation And Amortization Explanatory

Depreciation and amortization for the years ended December 31, 2015, 2016 and 2017 were composed of the following:

 

 

 

2015

 

 

2016

 

 

2017

 

Depreciation

 

Ps.

 

206,724

 

 

Ps.

 

300,880

 

 

Ps.

 

324,460

 

Amortization

 

 

 

949,711

 

 

 

 

1,047,507

 

 

 

 

1,119,102

 

 

 

Ps.

 

1,156,435

 

 

Ps.

 

1,348,387

 

 

Ps.

 

1,443,562