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Accounts payable, accrued liabilities and asset retirement obligations (Tables)
 12 Months Ended
Dec. 31, 2018
Text block [abstract]  
Components Accounts Payable and Accrued Liabilities

The components of the caption accounts payable and accrued liabilities are as follows:

 

     At December 31,  
     2017      2018  

Suppliers

      Ps. 106,483,848        Ps. 118,406,380  

Sundry creditors

      91,842,929        91,087,197  

Interest payable

      8,930,561        8,535,519  

Guarantee deposits from customers

      1,460,286        1,421,336  

Dividends payable

      3,955,783        2,506,835  
  

 

 

     

 

 

  

Total

      Ps. 212,673,407        Ps. 221,957,267  
  

 

 

     

 

 

  
Summary of Balance of Accrued Liabilities

The balance of accrued liabilities at December 31, 2017 and 2018 are as follows:

 

     At December 31,  
     2017      2018  

Current liabilities

      

Direct employee benefits payable

      Ps. 16,673,627        Ps. 16,152,118  

Contingencies

      51,079,131        40,281,573  
  

 

 

     

 

 

  

Total

      Ps. 67,752,758        Ps. 56,433,691  
  

 

 

     

 

 

  

 
Summary of Movements in Contingent Liabilities

The movements in contingencies for the years ended December 31, 2017 and 2018 are as follows:

 

    Balance at
December 31,
2016		     Business
combination		     Effect of
translation		     Increase of
the year		     Applications     Balance at
December 31,
2017		  
    Payments     Reversals  

Contingencies

     Ps. 50,766,070       Ps. 115,971       Ps. (648,685)       Ps. 10,510,473       Ps. (7,618,520)       Ps. (2,046,178)       Ps. 51,079,131  
 

 

 

    

 

 

    

 

 

    

 

 

    

 

 

    

 

 

    

 

 

  

 

    Balance at
December 31,
2017		     Business
combination		     Effect of
translation		     Increase of
the year		     Applications     Balance at
December 31,
2018		  
    Payments     Reversals  

Contingencies

     Ps. 51,079,131       Ps. 7,812       Ps. (5,729,826)       Ps. 15,683,252       Ps. (6,203,329)       Ps. (14,555,467)       Ps. 40,281,573  
 

 

 

    

 

 

    

 

 

    

 

 

    

 

 

    

 

 

    

 

 

  
Summary of Movements in Asset Retirement Obligations

The movements in the asset retirement obligations for the years ended December 31, 2017 and 2018 are as follows:

 

    Balance at 
  December 31,  
2016		     Effect of 
    translation    		         Increase of    
the year		     Applications     Balance at 
    December 31,    
2017		  
        Payments             Reversals      

Asset retirement obligations

     Ps. 16,288,631       Ps. (119,928)       Ps. 3,160,320       Ps. (126,088)       Ps. (957,806)       Ps. 18,245,129  
 

 

 

    

 

 

    

 

 

    

 

 

    

 

 

    

 

 

  
    Balance at 
December 31, 
2017		     Effect of 
translation		     Increase of 
the year		     Applications     Balance at 
December 31, 
2018		  
    Payments     Reversals  

Asset retirement obligations

     Ps. 18,245,129       Ps. (2,020,853)       Ps. 1,062,745       Ps. (151,364)       Ps. (1,164,056)       Ps. 15,971,601