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Accounts payable, accrued liabilities and asset retirement obligations
 12 Months Ended
Dec. 31, 2021
Text block [abstract]  
Accounts payable, accrued liabilities and asset retirement obligations
16. Accounts payable, accrued liabilities and asset retirement obligations
a)
The components of the captions account payable and accrued liabilities are as follows:
 
 
  
At December 31,
 
 
  
2020
 
  
2021
 
Suppliers
   
Ps.
 74,285,881     
Ps.
 
87,942,106
 
Sundry creditors
      101,406,307     
 
107,111,390
 
Interest payable
      7,661,762     
 
6,827,225
 
Guarantee deposits from customers
      1,386,645     
 
1,577,424
 
Dividends payable
      2,254,877     
 
3,029,536
 
    
 
 
     
 
 
  
Total
   
Ps.
 186,995,472     
Ps.
206,487,681
 
    
 
 
     
 
 
  
b)
The balance of accrued liabilities at December 31, 2020 and 2021 are as follows:
 
    
At December 31,
  
     2020     
2021
  
Current liabilities
                  
Direct employee benefits payable
    Ps. 18,965,160     
Ps.
20,052,946
 
Contingencies
      31,326,691     
 
34,338,518
 
    
 
 
     
 
 
  
Total
    Ps. 50,291,851     
Ps.
54,391,464
 
    
 
 
     
 
 
  
The movements in contingencies for the years ended December 31, 2020 and 2021 are as follows:
 
    
Balance at
December 31,
2019
     
Business
combination
     
Effect of
translation
    
Increase of
the year
     
Applications
    
Balance at
December 31,
2020
  
    
Payments
    
Reversals
  
Contingencies
    Ps. 34,379,969      Ps. 292      Ps. (4,290,753 )    Ps. 7,442,292      Ps. (3,214,407 )    Ps. (2,990,702 )    Ps. 31,326,691  
    
 
 
     
 
 
     
 
 
    
 
 
     
 
 
    
 
 
    
 
 
  
             
    
Balance at
December 31,
2020
     
Business
combination
     
Effect of
translation
    
Increase of
the year
     
Applications
    
Balance at
December 31,
2021
  
    
Payments
    
Reversals
  
Contingencies
   
Ps.
31,326,691
 
   
Ps.
        —  
 
   
Ps.
1,556,950
 
  
Ps.
7,425,182
 
   
Ps.
(4,079,190
) 
  
Ps.
(1,891,115
) 
  
Ps.
34,338,518
 
    
 
 
     
 
 
     
 
 
    
 
 
     
 
 
    
 
 
    
 
 
  
Contingencies include tax, labor, regulatory and other legal type contingencies. See Note 17 b) for detail of contingencies.
c)
The movements in the asset retirement obligations for the years ended December 31, 2020 and 2021 are as follows:
 
    Balance at
December 31,
2019		     Business
combination		     Effect of
translation		     Increase of
the year		     Applications     Balance at
December 31,
2020		  
    Payments     Reversals  
Asset retirement obligations
   Ps. 15,816,744     Ps.         —       Ps. 374,418     Ps. 2,412,908     Ps. (593,644 )    Ps. (122,435 )    Ps. 17,887,991  
   
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
  
 
   
Balance at
December 31,
2020
    
Business
combination
    
Effect of
translation
    
Increase of
the year
    
Applications
    
Balance at
December 31,
2021
  
   
Payments
    
Reversals
  
Asset retirement obligations
  
Ps.
17,887,991
 
  
Ps.
        —  
 
  
Ps.
(910,181
) 
  
Ps.
1,273,201
 
  
Ps.
(148,634
) 
  
Ps.
(1,350,154
) 
  
Ps.
16,752,223
 
   
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
  
The discount rates used for the asset retirement obligation are based on market rates that are expected to be undertaken by the dismantling or restoration of cell sites and may include labor costs.