RECENT ACCOUNTING PRONOUNCEMENTS (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred financing fees (net of accumulated amortization)	$ 3,343	$ 2,498
Debt maturing within one year	607,058	395,105
Long-term debt	$ 3,947,954	4,034,352
Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred financing fees (net of accumulated amortization)		29,298
Debt maturing within one year		395,334
Long-term debt		4,060,923
Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred financing fees (net of accumulated amortization)		(26,800)
Debt maturing within one year		(229)
Long-term debt		$ (26,571)