ACCRUED AND OTHER CURRENT LIABILITIES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Sep. 30, 2015	Jun. 30, 2015
Accrued Liabilities and Other Liabilities [Abstract]
Taxes - other than income	$ 28,183	$ 19,619
Accrued employee benefit liabilities	6,710	4,528
Accrued environmental remediation liabilities	9,164	12,315
Interest payable	56,066	57,958
Unearned revenue	27,365	23,329
Compensation and vacation	28,942	24,087
Accrued capital expenditures	79,060	31,178
Margin deposits	36,108	14,077
Unfavorable storage contracts	5,979	11,071
ARO	1,360	1,067
Litigation contingency accrual	2,390	40,000	$ 1,700	$ 13,500
Other	28,293	55,795
Total accrued and other current liabilities	309,620	295,024
Unfavorable storage contracts
Unfavorable storage contracts revenue recognized	11,100	$ 11,100
Unfavorable storage contracts revenue expected to be recognized in 2016	$ 6,000