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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