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Employee Benefits (Tables)
 12 Months Ended
Dec. 31, 2023
Text block [abstract]  
Analysis of the Net Liability and Net Period Cost for Employee Benefit
An analysis of the net liability and net period cost for employee benefits is as follows:
 
    
At December 31,
  
     2022     
2023
  
Mexico
    Ps. 112,031,055     
Ps.
119,265,063
 
Puerto Rico
      8,859,265     
 
7,227,422
 
Brazil
      6,303,584     
 
7,401,235
 
Europe
      9,971,256     
 
8,919,884
 
Ecuador
      519,239     
 
479,762
 
El Salvador
      135,299     
 
113,508
 
Nicaragua
      62,327     
 
53,974
 
Honduras
      41,292     
 
55,295
 
  
 
 
     
 
 
  
Total
    Ps. 137,923,317     
Ps.
143,516,143
 
  
 
 
     
 
 
  
 
    
For the year ended December 31,
  
     2021      2022     
2023
  
Mexico
    Ps. 15,507,652      Ps. 13,673,155     
Ps.
14,601,940
 
Puerto Rico
      548,550        538,681     
 
170,389
 
Brazil
      724,587        587,552     
 
369,624
 
Europe
      1,753,872        1,176,028     
 
1,750,101
 
Ecuador
      111,353        (29,743 )    
 
40,498
 
El Salvador
      19,081        14,384     
 
15,190
 
Nicaragua
      18,561        11,502     
 
10,937
 
Honduras
      4,718        7,593     
 
13,257
 
  
 
 
     
 
 
     
 
 
  
Total
    Ps. 18,688,374      Ps. 15,979,152     
Ps.
16,971,936
 
  
 
 
     
 
 
     
 
 
  
Summary of Defined Benefit Obligation (DBO) and Plan Assets for the Pension and Other Benefit Obligation Plans
The defined benefit obligation (DBO) and plan assets for the pension and other benefit obligation plans, by country, are as follows:
 
   
At December 31
  
    2022    
2023
  
    DBO     Plan Assets     Effect of
asset ceiling		     Net employee
benefit liability		    
DBO
    
Plan Assets
    
Effect of
asset ceiling
    
Net employee
benefit
liability
  
Mexico
   Ps. 285,775,547       Ps.(174,814,669 )    Ps. —      Ps. 110,960,878    
Ps.
293,551,400
 
  
 
Ps.(175,265,188
) 
  
Ps.
— 
 
  
Ps.
118,286,212
 
Puerto Rico
     26,747,454       (17,888,189 )      —        8,859,265    
 
22,244,771
 
  
 
(15,017,349
) 
  
 
— 
 
  
 
7,227,422
 
Brazil
     14,599,954       (15,823,761 )      6,064,069       4,840,262    
 
15,045,247
 
  
 
(13,810,050
) 
  
 
4,055,040
 
  
 
5,290,237
 
Europe
     3,464,777       —        —        3,464,777    
 
3,384,633
 
  
 
— 
 
  
 
— 
 
  
 
3,384,633
 
 
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
  
Total
   Ps. 330,587,732       Ps.(208,526,619 )    Ps. 6,064,069     Ps. 128,125,182    
Ps.
334,226,051
 
  
 
Ps.(204,092,587
) 
  
Ps.
4,055,040
 
  
Ps.
134,188,504
 
 
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
  
Summary of the Actuarial Results Generated for the Pension and Retirement Plans as well as the Medical Services
Below is a summary of the actuarial results generated for the pension and retirement plans as well as the medical services in Puerto Rico and Brazil; the pension plans and seniority premiums related to Telmex; the pension plan, the service awards plan and severance in Austria corresponding to the years ended December 31, 2021, 2022 and 2023:
 
     At December 31, 2021  
     DBO     Plan Assets     Effect of asset
ceiling		     Net employee
benefit liability		  
Balance at the beginning of the year
    Ps. 343,003,240     Ps. (191,549,583 )    Ps. 3,393,640     Ps. 154,847,297  
Current service cost
      2,090,896           2,090,896  
Interest cost on projected benefit obligation
      28,913,257           28,913,257  
Expected return on plan assets
        (15,112,669 )        (15,112,669 ) 
Changes in the asset ceiling during the period and others
          215,544       215,544  
Past service costs and other
        139,910         139,910  
Actuarial gain for changes in experience
      (23,024 )          (23,024 ) 
Actuarial gain from changes in demographic assumptions
      (48 )          (48 ) 
Actuarial gain from changes in financial assumptions
      (6,907 )          (6,907 ) 
  
 
 
    
 
 
    
 
 
    
 
 
  
Net period cost
    Ps. 30,974,174     Ps. (14,972,759 )    Ps. 215,544     Ps. 16,216,959  
Actuarial loss for changes in experience
      10,728,950           10,728,950  
Actuarial gain from changes in demographic assumptions
      (104,568 )          (104,568 ) 
Actuarial gain from changes in financial assumptions
      (4,099,321 )          (4,099,321 ) 
Changes in the asset ceiling during the period and others
          969,433       969,433  
Return on plan assets greater than discount rate (shortfall)
      (22,198,615 )          (22,198,615 ) 
  
 
 
    
 
 
    
 
 
    
 
 
  
Recognized in other comprehensive income
    Ps. 6,525,061     Ps. (22,198,615 )    Ps. 969,433     Ps. (14,704,121 ) 
Contributions made by plan participants
      99,201       (99,201 )        — 
Contributions to the pension plan made by the Company
        311,108         311,108  
Benefits paid
      (10,574,420 )      10,348,544         (225,876 ) 
Payments to employees
      (25,042,314 )          (25,042,314 ) 
Effect of translation
      330,770       (166,676 )      (156,158 )      7,936  
  
 
 
    
 
 
    
 
 
    
 
 
  
Others
    Ps. (35,186,763 )    Ps. 10,393,775     Ps. (156,158 )    Ps. (24,949,146 ) 
Balance at the end of the year
      345,315,712       (218,327,182 )      4,422,459       131,410,989  
Less short-term portion
      (236,304 )          (236,304 ) 
  
 
 
    
 
 
    
 
 
    
 
 
  
Non-current obligation
    Ps. 345,079,408     Ps. (218,327,182 )    Ps. 4,422,459     Ps. 131,174,685  
  
 
 
    
 
 
    
 
 
    
 
 
  
 
    At December 31, 2022  
    DBO     Plan Assets     Effect of asset
ceiling		     Net employee
benefit liability		  
Balance at the beginning of the year
   Ps. 345,315,712     Ps. (218,327,182 )    Ps. 4,422,459     Ps. 131,410,989  
Current service cost
     1,534,180       —        —        1,534,180  
Interest cost on projected benefit obligation
     30,565,134       —        —        30,565,134  
Expected return on plan assets
     —        (18,819,322 )      —        (18,819,322 ) 
Changes in the asset ceiling during the period and others
     —        —        398,399       398,399  
Past service costs and other
     —      142,911       —      142,911  
Actuarial gain for changes in experience
     (43,603 )      —        —        (43,603 ) 
Actuarial gain from changes in demographic assumptions
     (64 )      —        —        (64 ) 
Actuarial gain from changes in financial assumptions
     (88,990 )      —        —        (88,990 ) 
 
 
 
    
 
 
    
 
 
    
 
 
  
Net period cost
   Ps. 31,966,657     Ps. (18,676,411 )    Ps. 398,399     Ps. 13,688,645  
Actuarial loss for changes in experience
     2,747,706       —        —        2,747,706  
Actuarial loss from changes in demographic assumptions
     55,037       —        —        55,037  
Actuarial gain from changes in financial assumptions
     (9,838,708 )      —        —        (9,838,708 ) 
Changes in the asset ceiling during the period and others
     —        —        1,283,501       1,283,501  
Return on plan assets greater than discount rate (shortfall)
     —        13,719,181       —        13,719,181  
 
 
 
    
 
 
    
 
 
    
 
 
  
Recognized in other comprehensive income
   Ps. (7,035,965 )    Ps. 13,719,181     Ps. 1,283,501     Ps. 7,966,717  
Contributions made by plan participants
     78,642       (78,642 )      —        —
Contributions to the pension plan made by the Company
     —        516,280       —        516,280  
Benefits paid
     (13,502,781 )      13,221,202       —        (281,579 ) 
Payments to employees
     (23,753,735 )      —        —        (23,753,735 ) 
Plan changes
     12,461       —        —        12,461  
Effect of translation
     (2,218,050 )      1,098,953       (40,290 )      (1,159,387 ) 
 
 
 
    
 
 
    
 
 
    
 
 
  
Others
   Ps. (39,383,463 )    Ps. 14,757,793     Ps. (40,290 )    Ps. (24,665,960 ) 
Balance at the end of the year
     330,862,941       (208,526,619 )      6,064,069       128,400,391  
Less short-term portion
     (275,209 )      —          (275,209 ) 
 
 
 
    
 
 
    
 
 
    
 
 
  
Non-current obligation
   Ps. 330,587,732     Ps. (208,526,619 )    Ps. 6,064,069     Ps. 128,125,182  
 
 
 
    
 
 
    
 
 
    
 
 
  
 
   
At December 31, 2023
  
   
DBO
    
Plan Assets
    
Effect of asset
ceiling
    
Net employee
benefit liability
  
Balance at the beginning of the year
  
Ps.
330,862,941
 
  
Ps.
(208,526,619
) 
  
Ps.
6,064,069
 
  
Ps.
128,400,391
 
Current service cost
  
 
2,044,102
 
  
 
— 
 
  
 
— 
 
  
 
2,044,102
 
Interest cost on projected benefit obligation
  
 
33,203,706
 
  
 
— 
 
  
 
— 
 
  
 
33,203,706
 
Expected return on plan assets
  
 
— 
 
  
 
(20,251,931
) 
  
 
— 
 
  
 
(20,251,931
) 
Changes in the asset ceiling during the period and others
  
 
— 
 
  
 
— 
 
  
 
585,667
 
  
 
585,667
 
Past service costs and other
  
 
(322,700
) 
  
 
145,646
 
  
 
— 
    
 
(177,054
) 
Actuarial gain for changes in experience
  
 
(20,645
) 
  
 
— 
 
  
 
— 
 
  
 
(20,645
) 
Actuarial loss from changes in demographic assumptions
  
 
134
 
  
 
— 
 
  
 
— 
 
  
 
134
 
Actuarial loss from changes in financial assumptions
  
 
30,958
 
  
 
— 
 
  
 
— 
 
  
 
30,958
 
 
 
 
    
 
 
    
 
 
    
 
 
  
Net period cost
  
Ps.
34,935,555
 
  
Ps.
(20,106,285
) 
  
Ps.
585,667
 
  
Ps.
15,414,937
 
Actuarial loss for changes in experience
  
 
10,632,144
 
  
 
— 
 
  
 
— 
 
  
 
10,632,144
 
Actuarial gain from changes in demographic assumptions
  
 
(430,315
) 
  
 
— 
 
  
 
— 
 
  
 
(430,315
) 
Actuarial loss from changes in financial assumptions
  
 
1,900,436
 
  
 
— 
 
  
 
— 
 
  
 
1,900,436
 
Changes in the asset ceiling during the period and others
  
 
— 
 
  
 
— 
 
  
 
(2,247,990
) 
  
 
(2,247,990
) 
Return on plan assets greater than discount rate (shortfall)
  
 
— 
 
  
 
(6,210,593
) 
  
 
— 
 
  
 
(6,210,593
) 
 
 
 
    
 
 
    
 
 
    
 
 
  
Recognized in other comprehensive income
  
Ps.
12,102,265
 
  
Ps.
(6,210,593
) 
  
Ps.
(2,247,990
) 
  
Ps.
3,643,682
 
Contributions made by plan participants
  
 
45,404
 
  
 
(45,404
) 
  
 
— 
 
  
 
— 
  
Contributions to the pension plan made by the Company
  
 
— 
 
  
 
(10,853
) 
  
 
— 
 
  
 
(10,853
) 
Benefits paid
  
 
(27,844,968
) 
  
 
27,547,809
 
  
 
— 
 
  
 
(297,159
) 
Payments to employees
  
 
(10,868,600
) 
  
 
— 
 
  
 
— 
 
  
 
(10,868,600
) 
Plan changes
  
 
(29,383
) 
  
 
— 
 
    
 
(29,383
) 
Effect of translation
  
 
(4,745,061
) 
  
 
3,259,358
 
  
 
(346,706
) 
  
 
(1,832,409
) 
 
 
 
    
 
 
    
 
 
    
 
 
  
Others
  
Ps.
(43,442,608
) 
  
Ps.
30,750,910
 
  
Ps.
(346,706
) 
  
Ps.
(13,038,404
) 
Balance at the end of the year
  
 
334,458,153
 
  
 
(204,092,587
) 
  
 
4,055,040
 
  
 
134,420,606
 
Less short-term portion
  
 
(232,102
) 
  
 
— 
 
  
 
— 
 
  
 
(232,102
) 
 
 
 
    
 
 
    
 
 
    
 
 
  
Non-current obligation
  
Ps.
334,226,051
 
  
Ps.
(204,092,587
) 
  
Ps.
4,055,040
 
  
Ps.
134,188,504
 
 
 
 
    
 
 
    
 
 
    
 
 
  
Schedule of Plan Assets Invested
At December 31
 
     2022    
2023
  
     Puerto Rico     Brazil     Mexico    
Puerto Rico
    
Brazil
    
Mexico
  
Equity instruments
      40 %      —        74 %   
 
42
% 
  
 
— 
 
  
 
76
% 
Debt instruments
      24 %      92 %      26 %   
 
23
% 
  
 
91
% 
  
 
24
% 
Others
      36 %      8 %      —     
 
35
% 
  
 
9
% 
  
 
— 
 
  
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
  
     100 %      100 %      100 %   
 
100
% 
  
 
100
% 
  
 
100
% 
  
 
 
    
 
 
    
 
 
    
 
 
    
 
 
    
 
 
  
Summary of Assumptions Used in Determining the Net Period Cost
The assumptions used in determining the net period cost were as follows:
 

    2021   2022   2023
    Puerto
Rico		     Brazil   Mexico     Europe   Puerto
Rico		     Brazil   Mexico     Europe  
Puerto
Rico
    
Brazil
    
Mexico
    
Europe
Discount rate and long- term rate return
         0.25%,                
    8.51% &    
 
0.75% &
    
10.11% &
        
 
9.050% &
 
    
 
 
 
 
2.75
 
% 
  
 
8.67%
  
 
 
 
10.4
 
% 
  
 
1.00%
  
 
 
 
5.42
 
% 
  
 
10.05%
  
 
 
 
11.5
 
% 
  
 
3.75%
  
 
 
 
5.13
 
% 
  
 
 
 
9.20%
 
 
  
 
 
 
11.65
 
% 
  
 
3.25%
Rate of future salary increases
         3.00%,         4.5%,        
6.0%
        3.40%
&
         5.3% &        
&
    2.75%     3.25%     2.80%     4.00%     2.75%     3.50%     2.8%     3.4%, 4.6%  
 
2.00%
 
  
 
3.50%
 
  
 
2.8%
 
  
3.6%5.4%
Percentage of increase in health care costs for
the coming year
     2.72%     9.44%         5.44%     9.71%      
 
5.13%
 
  
 
9.71%
 
    
Year to which this level will be maintained
     N/A     2030     NA     2031      
 
NA
 
  
 
2032
 
    
Rate of increase of pensions
         1.60%         1.90%        
2.50%
Employee turnover rate*
         0.00%
1.12%		         0.00%
1.03%		        
0.00%-
0.91%
 
*
Depending on years of service
Summary of Increase (Decrease) Would Have Resulted in the DBO Pension and Other Benefits
    
-100 points
     
+100 points
  
Discount rate
    Ps. 24,649,189      Ps. (21,708,327 )
Health care cost trend rat
    Ps. (432,588 )     Ps. 495,862  
Summary of Long-Term Direct Employee Benefits
     Balance at
December 31,
2021		      Effect of
translation		      Increase of
the year		      Payments      Balance at
December 31,
2022		  
Long-term direct employee benefits
      Ps.7,925,846        Ps.(879,484)        Ps.1,376,566        Ps.(2,019,176)        Ps.6,403,752  
  
 
 
     
 
 
     
 
 
     
 
 
     
 
 
  
    
Balance at
December 31,
2022
     
Effect of
translation
     
Increase of
the year
     
Payments
     
Balance at
December 31,
2023
  
Long-term direct employee benefits
   
 
Ps.6,403,752
 
   
 
Ps.(647,033)
 
   
 
Ps.1,608,275
 
   
 
Ps.(1,975,199)
 
   
 
Ps.5,389,795