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TRADE AND OTHER ACCOUNTS RECEIVABLE CURRENT, AND NON-CURRENT ACCOUNTS RECEIVABLE (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Disclosure of reconciliation of changes in goodwill [line items]    
Trade accounts receivable $ 1,175,796 $ 1,022,933
Other accounts receivable 133,054 170,264
Total net trade and accounts receivable 1,220,941 1,116,143
Less: non-current portion - accounts receivable (6,891) (8,254)
Trade and other accounts receivable, current 1,214,050 1,107,889
Gross Book Value [Member]    
Disclosure of reconciliation of changes in goodwill [line items]    
Trade accounts receivable 1,175,796 1,022,933
Other accounts receivable 133,054 170,264
Total net trade and accounts receivable 1,308,850 1,193,197
Accumulated Impairment [Member]    
Disclosure of reconciliation of changes in goodwill [line items]    
Other accounts receivable
Total net trade and accounts receivable $ (87,909) $ (77,054)