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OTHER REQUIRED DISCLOSURES (Financial debt reconciliation) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Liabilities arising from financing activities, beginning balance | $ (3,298,942) | $ (1,218,635)
Cash flows | 1,098,408 | (2,052,414)
Reclassifications | 0 | 0
Acquisitions - finance leases |  | (76,879)
Foreign exchange adjustments | (169,191) | (47,894)
Other non cash movements | 258,940 | 96,880
Liabilities arising from financing activities, ending balance | (2,110,785) | (3,298,942)
Finance lease liabilities |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Liabilities arising from financing activities, beginning balance | (77,035) | 0
Cash flows | 7,565 | 364
Reclassifications | 0 | 0
Acquisitions - finance leases |  | (76,879)
Foreign exchange adjustments | (47,390) | (14,949)
Other non cash movements | 43,032 | 14,429
Liabilities arising from financing activities, ending balance | (73,828) | (77,035)
Short term borrowings |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Liabilities arising from financing activities, beginning balance | (1,505,570) | (821,893)
Cash flows | 1,492,568 | (540,918)
Reclassifications | (459,520) | (192,547)
Acquisitions - finance leases |  | 0
Foreign exchange adjustments | (121,801) | (32,574)
Other non cash movements | 194,467 | 82,362
Liabilities arising from financing activities, ending balance | (399,856) | (1,505,570)
Long term borrowings |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Liabilities arising from financing activities, beginning balance | (1,716,337) | (396,742)
Cash flows | (401,725) | (1,511,860)
Reclassifications | 459,520 | 192,547
Acquisitions - finance leases |  | 0
Foreign exchange adjustments | 0 | (371)
Other non cash movements | 21,441 | 89
Liabilities arising from financing activities, ending balance | $ (1,637,101) | $ (1,716,337)

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