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SEGMENT INFORMATION (Net sales and long lived assets by geographic areas) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of geographical areas [line items] |  |  |
Net sales | $ 8,735,435 | $ 10,192,818 | $ 11,454,807
Non-current assets | 7,413,264 | 7,483,419 | 6,830,133
Mexico |  |  |
Disclosure of geographical areas [line items] |  |  |
Net sales | 4,660,278 | 5,477,690 | 6,345,137
Non-current assets | 4,726,342 | 4,584,802 | 4,093,288
Southern region |  |  |
Disclosure of geographical areas [line items] |  |  |
Net sales | 1,762,785 | 1,704,132 | 1,941,168
Non-current assets | 919,490 | 1,008,860 | 1,071,705
Brazil and Other markets |  |  |
Disclosure of geographical areas [line items] |  |  |
Net sales | 2,312,372 | 3,010,996 | 3,168,502
Non-current assets | $ 1,767,432 | $ 1,889,757 | $ 1,665,140

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