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Financial Instruments - Additional Information (Detail) $ in Millions, $ in Millions |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2020 | Dec. 31, 2023 MXN ($) | Dec. 31, 2022 MXN ($) | Dec. 31, 2021 MXN ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2023 MXN ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2022 MXN ($)
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |
Long term debt |  |  |  |  |  | $ 65,126 |  | $ 78,669
Market value (loss) on financial instruments |  | $ 169 | $ (672) | $ 80 |  |  |  |
Joint venture stock interest sold percentage | 100.00% |  |  |  |  |  |  |
Financial assets |  |  |  |  | $ 0 |  | $ 5 |
Long Term Yankee Bonds | Hedged portion of senior note |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |
Market value (loss) on financial instruments |  | $ 371 | $ 1,647 |  |  |  |  |
Increase decrease in borrowings |  |  |  |  |  |  |  | 1,647
U.S. Dollar | Long Term Yankee Bonds |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |
Long term debt |  |  |  |  |  | 36,352 |  | $ 41,429
U.S. Dollar | Long Term Yankee Bonds | Hedged portion of senior note |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |
Long term debt |  |  |  |  | $ 705 |  | $ 705 |
Mexican peso | Long Term Yankee Bonds | Hedged portion of senior note |  |  |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |  |  |
Increase decrease in borrowings |  |  |  |  |  | $ 1,277 |  |

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