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COMMON STOCK AND DIVIDENDS (Details) | 12 Months Ended
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Dec. 31, 2017 Vote $ / shares shares | Dec. 31, 2016 Vote $ / shares shares | Dec. 31, 2015 Vote $ / shares shares
Common stock structure and shares [Abstract] |  |  |
Amount of common stock, subscribed, issued, paid in, and authorized for public offer (in shares) | 794,495,283 | 794,495,283 | 794,495,283
Number of shares represents for each share on New York Stock Exchange (in shares) | 5 |  |
Class "A" [Member] |  |  |
Common stock structure and shares [Abstract] |  |  |
Amount of common stock, subscribed, issued, paid in, and authorized for public offer (in shares) |  | 405,192,594 | 405,192,594
Face amount of common shares (in dollars per share) | $ / shares | $ 1 | $ 1 | $ 1
Number of votes for common stock | Vote | 1 | 1 | 1
Class "B" [Member] |  |  |
Common stock structure and shares [Abstract] |  |  |
Amount of common stock, subscribed, issued, paid in, and authorized for public offer (in shares) |  | 389,302,689 | 389,302,689
Face amount of common shares (in dollars per share) | $ / shares | $ 1 | $ 1 | $ 1
Number of votes for common stock | Vote | 1 | 1 | 1

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