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Consolidated Statements of Changes in Stockholders' Equity - MXN ($)
$ in Thousands
Capital stock [Member]
Additional paid-in capital [Member]
Retained earnings [Member]
Repurchase of own capital stock reserve [Member]
Cumulative translation effects in foreign subsidiaries [Member]
Total controlling interest [Member]
Non-controlling Interest [Member]
Total
Balance at Dec. 31, 2017 $ 2,832,268 $ 4,579,472 $ 20,969,443 $ 1,732,447 $ 4,312,478 $ 34,426,108 $ (108,572) $ 34,317,536
Increase in reserve     (3,000,000) 3,000,000        
Repurchase of own capital stock, net   (4,239)   (1,636,057)   (1,640,296)   (1,640,296)
Comprehensive income (loss)     3,653,347   (606,787) 3,046,560 (214,797) 2,831,763
Balance at Dec. 31, 2018 2,832,268 4,575,233 21,622,790 3,096,390 3,705,691 35,832,372 (323,369) 35,509,003
Increase in reserve               484,046
Repurchase of own capital stock, net       (156,058)   (156,058)   (156,058)
Comprehensive income (loss)     (1,635,909)   (1,455,428) (3,091,337) 348,169 (2,743,168)
Balance at Dec. 31, 2019 2,832,268 4,575,233 19,986,881 2,940,332 2,250,263 32,584,977 24,800 32,609,777
Increase in reserve               484,046
Repurchase of own capital stock, net       (41,984)   (41,984)   (41,984)
Dividends paid     (1,990,000)     (1,990,000)   (1,990,000)
Comprehensive income (loss)     2,798,188   (368,532) 2,429,656 11,210 2,440,866
Balance at Dec. 31, 2020 $ 2,832,268 $ 4,575,233 $ 20,795,069 $ 2,898,348 $ 1,881,731 $ 32,982,649 $ 36,010 $ 33,018,659