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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
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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

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