SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
SUPPLEMENTAL CASH FLOW INFORMATION [Abstract]
Interest (exclusive of amount capitalized)	$ 134,215	$ 162,110
Income taxes	31,755	13,867
Accrued liabilities for purchases of property, plant & equipment	13,651	12,482
Liabilities assumed	2,426	755
Fair value of noncash assets and liabilities exchanged	20,000	0
Fair value of equity consideration	$ 0	$ 1,094