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BORROWINGS (Borrowings by currency) (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Disclosure of detailed information about borrowings [line items] |  |
Borrowings | $ 2,036,957 | $ 3,221,907
Floating Rate |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 1,747,074 | 2,075,276
Fixed Rate |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 289,883 | 1,146,631
United States of America, Dollars | Floating Rate |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 1,747,074 | 2,061,106
United States of America, Dollars | Fixed Rate |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 262,873 | 791,158
Argentina, Pesos | Floating Rate |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 0 | 2,377
Argentina, Pesos | Fixed Rate |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 0 | 328,060
Colombia, Pesos | Floating Rate |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 0 | 11,793
Colombia, Pesos | Fixed Rate |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | 17,009 | 18,500
Guatemala, Quetzales | Fixed Rate |  |
Disclosure of detailed information about borrowings [line items] |  |
Borrowings | $ 10,001 | $ 8,913

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- Details
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- Details
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