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Financial Instruments - Summary of Maturity Analysis for Non-derivative and Derivative Financial Liabilities (Details) - Liquidity risk - MXN ($) $ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Disclosure Of Maturity Analysis For Non-derivative And Derivative Financial Liabilities [line items] |  |
Percentage of outstanding consolidated total indebtedness at the level of its sub-holding companies | 47.40% | 50.20%
Less than one year |  |
Disclosure Of Maturity Analysis For Non-derivative And Derivative Financial Liabilities [line items] |  |
Notes and bonds | $ 4,439 |
Loans from banks | 3,428 |
IFRS 16 lease obligations | 55 |
Derivative financial liabilities | 993 |
1-2 years |  |
Disclosure Of Maturity Analysis For Non-derivative And Derivative Financial Liabilities [line items] |  |
Notes and bonds | 17,183 |
Loans from banks | 1,941 |
IFRS 16 lease obligations | 44 |
Derivative financial liabilities | 1,233 |
2-3 years |  |
Disclosure Of Maturity Analysis For Non-derivative And Derivative Financial Liabilities [line items] |  |
Notes and bonds | 2,918 |
Loans from banks | 2,732 |
IFRS 16 lease obligations | 32 |
Derivative financial liabilities | 404 |
3-4 years |  |
Disclosure Of Maturity Analysis For Non-derivative And Derivative Financial Liabilities [line items] |  |
Notes and bonds | 4,551 |
Loans from banks | 79 |
IFRS 16 lease obligations | 25 |
Derivative financial liabilities | 1,672 |
4-5 years |  |
Disclosure Of Maturity Analysis For Non-derivative And Derivative Financial Liabilities [line items] |  |
Notes and bonds | 5,271 |
Loans from banks | 28 |
IFRS 16 lease obligations | 1 |
Derivative financial liabilities | 147 |
Later than 5 years |  |
Disclosure Of Maturity Analysis For Non-derivative And Derivative Financial Liabilities [line items] |  |
Notes and bonds | 233,001 |
Derivative financial liabilities | $ (11,787) |

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