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Business Combinations, Acquisitions and Non-controlling Interest - Summary of Consolidated Statements of Comprehensive Income (Detail)
$ in Thousands, $ in Millions
 12 Months Ended
Dec. 31, 2023
MXN ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
MXN ($)
Dec. 31, 2021
MXN ($)
Disclosure of detailed information about business combination [line items]        
Operating costs and expenses $ 648,229,329 $ 38,372 $ 673,630,645 $ 663,131,202
Operating income (loss) 167,783,515 9,931 170,870,752 167,556,250
Net income 80,789,642 4,782 81,506,395 196,326,114
Total comprehensive income 35,372,469 2,094 42,571,962 204,185,563
Net income attributable to:        
Equity holders of the parent 76,110,617   76,159,391 192,423,167
Non-controlling interest 4,679,025 277 5,347,004 3,902,947
Net income 80,789,642 4,782 81,506,395 196,326,114
Comprehensive income attributable to:        
Non-controlling interest 793,615 47 1,612,938 1,767,061
Total comprehensive income (loss) for the year 35,372,469 $ 2,094 42,571,962 204,185,563
Subsidiaries with material non-controlling interests [member]        
Disclosure of detailed information about business combination [line items]        
Operating revenues 100,762,884   105,956,057 113,838,487
Operating costs and expenses 85,320,071   89,800,536 98,346,896
Operating income (loss) 15,442,813   16,155,521 15,491,591
Net income 10,929,263   11,795,662 9,104,962
Total comprehensive income 3,621,780   6,127,362 7,790,499
Net income attributable to:        
Equity holders of the parent 6,380,385   6,000,942 4,629,816
Non-controlling interest 4,548,878   5,794,720 4,475,146
Net income 10,929,263   11,795,662 9,104,962
Comprehensive income attributable to:        
Equity holders of the parent 2,114,356   3,124,955 3,973,154
Non-controlling interest 1,507,424   3,002,407 3,817,345
Total comprehensive income (loss) for the year $ 3,621,780   $ 6,127,362 $ 7,790,499