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Balances and Transactions in Foreign Currencies - Balances (Details) - MXN ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Disclosure of Balances and Transactions in Foreign Currencies [line items] |  |
Short-Term Assets | $ 75,114 | $ 70,137
Long-Term Assets | 2,308 | 2,492
Short-Term Liabilities | 7,222 | 6,069
Long-Term Liabilities | 153,343 | 146,521
U S dollar |  |
Disclosure of Balances and Transactions in Foreign Currencies [line items] |  |
Short-Term Assets | 74,994 | 69,612
Long-Term Assets | 983 | 1,143
Short-Term Liabilities | 6,310 | 5,590
Long-Term Liabilities | 125,447 | 122,000
Euro |  |
Disclosure of Balances and Transactions in Foreign Currencies [line items] |  |
Short-Term Assets | 74 | 479
Short-Term Liabilities | 355 | 458
Long-Term Liabilities | 27,896 | 24,521
Other currencies |  |
Disclosure of Balances and Transactions in Foreign Currencies [line items] |  |
Short-Term Assets | 46 | 46
Long-Term Assets | 1,325 | 1,349
Short-Term Liabilities | $ 557 | $ 21

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