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TRADE AND OTHER ACCOUNTS PAYABLES (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Current    
Trade and other accounts payables $ 1,349,201 $ 1,117,926
Accrued liabilities at the reporting date 346,001 475,142
Total trade and other accounts payables $ 1,695,202 $ 1,593,068