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Earnings per Share (Tables) | 12 Months Ended
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Dec. 31, 2021
IFRS Text Block [Abstract] |
Calculation of Basic and Diluted Earnings Per Share Amounts | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2021 | ​ | 2020 | ​ | ​ | 2019 |
​ | ​ | Per Series | ​ | Per Series | ​ | Per Series | ​ | Per Series | ​ | Per Series | ​ | Per Series |
​ | ​ | “B” Shares | ​ | “D” Shares | ​ | “B” Shares | ​ | “D” Shares | ​ | “B” Shares | ​ | “D” Shares | ​
(in millions of shares) |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Weighted average number of shares for basic earnings per share |  | ​ | 9,242.88 |  | ​ | 8,630.54 |  | ​ | 9,243.59 |  | ​ | 8,633.38 |  | ​ | 9,244.16 |  | ​ | 8,635.65 | ​
Effect of dilution associated with non-vested shares for share based payment plans |  | ​ | 3.54 |  | ​ | 14.17 |  | ​ | 2.83 |  | ​ | 11.33 |  | ​ | 2.26 |  | ​ | 9.06 | ​
Weighted average number of shares adjusted for the effect of dilution (Shares outstanding) |  | ​ | 9,246.42 |  | ​ | 8,644.71 |  | ​ | 9,246.42 |  | ​ | 8,644.71 |  | ​ | 9,246.42 |  | ​ | 8,644.71 | ​
Dividend rights per series (see Note 23.1) |  | ​ | 100 | % | ​ | 125 | % | ​ | 100 | % | ​ | 125 | % | ​ | 100 | % | ​ | 125 | %
Weighted average number of shares further adjusted to reflect dividend rights |  | ​ | 9,246.42 |  | ​ | 10,805.89 |  | ​ | 9,246.42 |  | ​ | 10,805.89 |  | ​ | 9,246.42 |  | ​ | 10,805.89 | ​
Basic earnings per share |  | ​ | 1.42 |  | ​ | 1.78 |  | ​ | (0.10) |  | ​ | (0.12) |  | ​ | 1.03 |  | ​ | 1.29 | ​
Diluted earnings per share |  | ​ | 1.42 |  | ​ | 1.78 |  | ​ | (0.10) |  | ​ | (0.12) |  | ​ | 1.03 |  | ​ | 1.29 | ​
Allocation of earnings, weighted |  | ​ | 46.11 | % | ​ | 53.89 | % | ​ | 46.11 | % | ​ | 53.89 | % | ​ | 46.11 | % | ​ | 53.89 | %
Net controlling interest income allocated |  | Ps. | 13,139 |  | Ps. | 15,356 |  | Ps. | (890) |  | Ps. | (1,040) |  | Ps. | 9,545 |  | Ps. | 11,154 | ​

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