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Financial Assets and Liabilities - Summary of Fair Value for Financial Assets (Excluding Cash and Cash Equivalents) and Financial Liabilities (Detail) - MXN ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Assets: |  |
Financial Assets | $ 303,447,939 | $ 344,892,278
Total current assets | 75,201,661 | 91,030,791
Total non current assets | 228,246,278 | 253,861,487
Liabilities: |  |
Financial Liabilities | 633,107,286 | 648,038,187
Debt [member] |  |
Liabilities: |  |
Financial Liabilities | 490,041,751 | 488,558,030
Financial instruments, class [member] |  |
Assets: |  |
Financial Assets | 1,446,034 | 2,602,680
Equity investments at fair value through OCI and other short term investments [member] |  |
Assets: |  |
Financial Assets | 73,755,627 | 88,428,111
Pension plan assets [member] |  |
Assets: |  |
Non current financial assets | 204,092,587 | 208,526,619
Derivative Financial Instruments [Member] |  |
Liabilities: |  |
Financial Liabilities | 17,896,379 | 25,331,346
Liability Related to Right of Use of Assets [Member] |  |
Liabilities: |  |
Financial Liabilities | 125,169,156 | 134,148,811
Revalued Of Assets [Member] |  |
Assets: |  |
Non current financial assets | 9,239,279 | 38,353,719
Debt Instruments At Fair Value Through OCI [Member] |  |
Assets: |  |
Non current financial assets | 14,914,412 | 6,981,149
Level 1 [member] |  |
Assets: |  |
Financial Assets | 266,212,454 | 281,257,799
Total current assets | 70,231,744 | 88,428,111
Total non current assets | 195,980,710 | 192,829,688
Liabilities: |  |
Financial Liabilities | 507,480,088 | 505,858,206
Level 1 [member] | Debt [member] |  |
Liabilities: |  |
Financial Liabilities | 382,310,932 | 371,709,395
Level 1 [member] | Equity investments at fair value through OCI and other short term investments [member] |  |
Assets: |  |
Financial Assets | 70,231,744 | 88,428,111
Level 1 [member] | Pension plan assets [member] |  |
Assets: |  |
Non current financial assets | 191,442,079 | 192,829,688
Level 1 [member] | Liability Related to Right of Use of Assets [Member] |  |
Liabilities: |  |
Financial Liabilities | 125,169,156 | 134,148,811
Level 1 [member] | Debt Instruments At Fair Value Through OCI [Member] |  |
Assets: |  |
Non current financial assets | 4,538,631 |
Level 2 [member] |  |
Assets: |  |
Financial Assets | 24,438,760 | 25,241,490
Total current assets | 1,446,034 | 2,602,680
Total non current assets | 22,992,726 | 22,638,810
Liabilities: |  |
Financial Liabilities | 125,627,198 | 142,179,981
Level 2 [member] | Debt [member] |  |
Liabilities: |  |
Financial Liabilities | 107,730,819 | 116,848,635
Level 2 [member] | Financial instruments, class [member] |  |
Assets: |  |
Financial Assets | 1,446,034 | 2,602,680
Level 2 [member] | Pension plan assets [member] |  |
Assets: |  |
Non current financial assets | 12,616,945 | 15,657,661
Level 2 [member] | Derivative Financial Instruments [Member] |  |
Liabilities: |  |
Financial Liabilities | 17,896,379 | 25,331,346
Level 2 [member] | Debt Instruments At Fair Value Through OCI [Member] |  |
Assets: |  |
Non current financial assets | 10,375,781 | 6,981,149
Level 3 [member] |  |
Assets: |  |
Financial Assets | 12,796,725 | 38,392,989
Total current assets | 3,523,883 | 0
Total non current assets | 9,272,842 | 38,392,989
Level 3 [member] | Equity investments at fair value through OCI and other short term investments [member] |  |
Assets: |  |
Financial Assets | 3,523,883 |
Level 3 [member] | Pension plan assets [member] |  |
Assets: |  |
Non current financial assets | 33,563 | 39,270
Level 3 [member] | Revalued Of Assets [Member] |  |
Assets: |  |
Non current financial assets | $ 9,239,279 | $ 38,353,719

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