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Significant Accounting Policies - Foreign Currencies (Details) $ in Millions | 12 Months Ended |
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Dec. 31, 2021 MXN ($) $ / $ € / $ $ / $ C$ / $ $ / $ ₡ / $ $ / $ R$ / $ Q / $ $ / € $ / $ $ / $ S/ / $ | Dec. 31, 2020 MXN ($) S/ / $ $ / $ $ / $ R$ / $ Q / $ $ / $ C$ / $ $ / $ ₡ / $ € / $ $ / $ $ / $ $ / € | Dec. 31, 2019 MXN ($) ₡ / $ C$ / $ R$ / $ € / $ S/ / $ $ / $ $ / $ $ / $ $ / $ $ / $ Q / $ | Apr. 08, 2022 $ / € $ / $
Disclosure of significant accounting policies [line items] |  |  |  |
Goodwill recognised as of acquisition date | $ | $ 0 |  |  |
Interest income on loans and receivables | $ | $ 0 | $ 0 | $ 0 |
Exchange Rate as of | 20.5140 |  |  |
Impairment charge, intangibles | $ |  | $ 375 |  |
Guatemala, Quetzal | Guatemala |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Functional / Recording Currency | Quetzal |  |  |
Average Exchange Rate for | Q / $ | 2.62 | 2.78 | 2.50 |
Exchange Rate as of | Q / $ | 2.67 | 2.56 |  |
Costa Rica, Colon | Costa Rica |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Functional / Recording Currency | Colon |  |  |
Average Exchange Rate for | ₡ / $ | 0.03 | 0.04 | 0.03 |
Exchange Rate as of | ₡ / $ | 0.03 | 0.03 |  |
U S dollar |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Exchange Rate as of | 20.5835 | 19.9487 |  | 20.0665
U S dollar | Panama |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Functional / Recording Currency | U.S. dollar |  |  |
Average Exchange Rate for | 20.28 | 21.49 | 19.26 |
Exchange Rate as of | 20.58 | 19.95 |  |
U S dollar | Ecuador |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Functional / Recording Currency | U.S. dollar |  |  |
Average Exchange Rate for | 20.28 | 21.49 | 19.26 |
Exchange Rate as of | 20.58 | 19.95 |  |
U S dollar | United States |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Functional / Recording Currency | U.S. dollar |  |  |
Average Exchange Rate for | 20.28 | 21.49 |  |
Exchange Rate as of | 20.58 | 19.95 |  |
Colombian peso | Colombia |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Functional / Recording Currency | Colombian peso |  |  |
Average Exchange Rate for | 0.01 | 0.01 | 0.01 |
Exchange Rate as of | 0.01 | 0.01 |  |
Nicaragua, Cordoba | Nicaragua |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Functional / Recording Currency | Cordoba |  |  |
Average Exchange Rate for | C$ / $ | 0.58 | 0.63 | 0.58 |
Exchange Rate as of | C$ / $ | 0.58 | 0.57 |  |
Argentine peso | Argentina |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Functional / Recording Currency | Argentine peso |  |  |
Average Exchange Rate for | 0.21 | 0.31 | 0.41 |
Exchange Rate as of | 0.20 | 0.24 |  |
Brazilian Reais | Brazil |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Functional / Recording Currency | Reais |  |  |
Average Exchange Rate for | R$ / $ | 3.76 | 4.18 | 4.89 |
Exchange Rate as of | R$ / $ | 3.69 | 3.84 |  |
Chilean peso | Chile |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Functional / Recording Currency | Chilean peso |  |  |
Average Exchange Rate for | 0.03 | 0.03 | 0.03 |
Exchange Rate as of | 0.02 | 0.03 |  |
Euro |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Exchange Rate as of | $ / € | 23.2753 | 24.5213 |  | 21.9006
Euro | Euro Zone |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Functional / Recording Currency | Euro (€) |  |  |
Average Exchange Rate for | € / $ | 24.00 | 24.48 | 21.56 |
Exchange Rate as of | € / $ | 23.25 | 24.52 |  |
Peru, Nuevo Sol | Peru |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Functional / Recording Currency | Nuevo Sol |  |  |
Average Exchange Rate for | S/ / $ | 5.22 | 6.15 | 5.77 |
Exchange Rate as of | S/ / $ | 5.15 | 5.51 |  |
Uruguay Peso en Unidades Indexadas (UPUI) | Uruguay |  |  |  |
Disclosure of significant accounting policies [line items] |  |  |  |
Functional / Recording Currency | Uruguayan peso |  |  |
Average Exchange Rate for | 0.47 | 0.51 | 0.55 |
Exchange Rate as of | 0.46 | 0.47 |  |

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