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COMMON STOCK AND DIVIDENDS (Details) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 Vote $ / shares shares | Dec. 31, 2019 $ / shares shares
Common stock structure and shares [Abstract] |  |
Outstanding shares (in shares) | 752,761,058 | 784,608,528
Number of shares represents for each share on New York Stock Exchange (in shares) | 5 |
Class "A" [Member] |  |
Common stock structure and shares [Abstract] |  |
Outstanding shares (in shares) | 405,192,594 | 405,192,594
Face value common shares class (in pesos per share) | $ / shares | $ 1 |
Number of votes for common stock | Vote | 1 |
Class "B" [Member] |  |
Common stock structure and shares [Abstract] |  |
Outstanding shares (in shares) | 347,568,464 | 379,415,934
Face value common shares class (in pesos per share) | $ / shares | $ 1 |
Number of votes for common stock | Vote | 1 |
Common Stock [Member] |  |
Common stock structure and shares [Abstract] |  |
Shares issued (in shares) | 794,495,283 | 794,495,283
Common Stock [Member] | Class "A" [Member] |  |
Common stock structure and shares [Abstract] |  |
Shares issued (in shares) | 405,192,594 | 405,192,594
Common Stock [Member] | Class "B" [Member] |  |
Common stock structure and shares [Abstract] |  |
Shares issued (in shares) | 389,302,689 | 389,302,689
Treasury Shares [Member] |  |
Common stock structure and shares [Abstract] |  |
Shares issued (in shares) | 41,734,225 | 9,886,755
Face value common shares class (in pesos per share) | $ / shares | $ 1 | $ 1
Treasury Shares [Member] | Class "A" [Member] |  |
Common stock structure and shares [Abstract] |  |
Shares issued (in shares) | 0 | 0
Treasury Shares [Member] | Class "B" [Member] |  |
Common stock structure and shares [Abstract] |  |
Shares issued (in shares) | 41,734,225 | 9,886,755

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