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COST OF SALES (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Analysis of income and expense [abstract]      
Inventories at the beginning of the year $ 2,001,781 $ 2,158,298 $ 2,689,829
Translation differences 0 0 (21,919)
Raw materials and consumables used and other movements 9,835,504 5,359,938 6,165,654
Services and fees 151,251 112,924 151,373
Labor cost 689,614 546,045 611,615
Depreciation of property, plant and equipment 514,746 527,283 508,934
Amortization of intangible assets 23,519 14,624 17,805
Maintenance expenses 582,633 371,368 467,090
Office expenses 7,741 6,131 8,513
Insurance 12,309 10,641 9,674
Change of obsolescence allowance 3,965 (1,279) 8,413
Recovery from sales of scrap and by-products (37,597) (20,892) (23,793)
Others 17,909 16,623 17,550
Less: Inventories at the end of the year (3,908,305) (2,001,781) (2,158,298)
Cost of Sales $ 9,895,070 $ 7,099,923 $ 8,452,440