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COMMON STOCK AND DIVIDENDS (Details) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 Vote $ / shares shares | Dec. 31, 2018 $ / shares shares
Common stock structure and shares [Abstract] |  |
Outstanding shares (in shares) | 784,608,528 | 780,894,503
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) | 379,415,934 | 375,701,909
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) | 9,886,755 | 13,600,780
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) | 9,886,755 | 13,600,780

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- Definition The number of shares that have been authorised and issued, reduced by treasury shares held. [Refer: Treasury shares] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 79 -Subparagraph a -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_79_a_iv&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The nominal value per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 79 -Subparagraph a -Clause iii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_79_a_iii&doctype=Standard -URIDate 2019-03-27 + Details
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