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SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
SUPPLEMENTAL CASH FLOW INFORMATION [Abstract]    
Interest (exclusive of amount capitalized) $ 118,157 $ 69,865
Income taxes 124,121 92,397
Accrued liabilities for purchases of property, plant & equipment 10,602 10,493
Amounts referable to business acquisitions Liabilities assumed $ 1,935 $ 0