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Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting Policies and Practices - Summary of Net profit for the year from discontinued operations (Detail)
$ in Thousands, $ in Millions
 12 Months Ended
Dec. 31, 2022
MXN ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
MXN ($)
Dec. 31, 2020
MXN ($)
Operating revenues:        
Service revenues $ 712,985,548 $ 36,725 $ 694,300,431 [1] $ 688,029,934 [1]
Sales of equipment 131,515,849 6,774 136,387,021 [1] 127,369,153 [1]
Operating revenues 844,501,397 43,499 830,687,452 [1] 815,399,087 [1]
Total costs and expenses 330,532,450 17,025 328,510,002 [1] 323,468,972 [1]
Operating income 170,870,752 8,802 167,556,250 [1] 148,812,807 [1]
Profit before income tax 134,269,499 6,916 104,807,649 [1] 52,617,349 [1]
Tax expense:        
Net profit for the year from discontinued operations (6,719,015) $ (346) 124,235,942 [1] 11,587,779 [1]
Discontinued operations [member] | Tracfone Wireless Inc Tracfone [member]        
Operating revenues:        
Service revenues     130,091,540 149,376,532
Sales of equipment     22,160,481 27,802,837
Operating revenues     152,252,021 177,179,369
Total costs and expenses     134,495,316 157,327,836
Operating income     17,756,705 19,851,533
Financial cost     (1,733) (2,026)
Gain on disposal of discontinued operations     132,821,709 0
Profit before income tax     150,576,681 19,849,507
Tax expense:        
Related to pre-tax profit from the ordinary activities for the period     2,571,541 2,856,882
Related to gain on disposal from discontinued operations     26,294,422 0
Net profit for the year from discontinued operations     121,710,718 16,992,625
Discontinued operations [member] | Claro Panama [Member]        
Operating revenues:        
Service revenues 1,210,109   2,667,497 2,932,390
Sales of equipment 206,595   394,534 317,802
Operating revenues 1,416,704   3,062,031 3,250,192
Total costs and expenses 1,403,311   3,378,614 5,198,532
Operating income 13,393   (316,583) (1,948,340)
Financial cost (39,538)   (89,974) (117,300)
Gain on disposal of discontinued operations 3,405,014   0 0
Profit before income tax 3,378,869   (406,557) (2,065,640)
Tax expense:        
Related to pre-tax profit from the ordinary activities for the period 0   5,297 14,713
Net profit for the year from discontinued operations $ 3,378,869   $ (411,854) $ (2,080,353)
[1] Restated for discontinued operations