EQUITY (Details) - USD ($)			9 Months Ended
	Jun. 20, 2016	Mar. 17, 2016	Sep. 30, 2016	Oct. 27, 2015
Class of Stock [Line Items]
Liquidation preference per share (in dollars per unit)			$ 25.00
Change of control event, increase in dividend rate (as a percent)			5.00%
Capital - Series A Preferred Units
Class of Stock [Line Items]
Units issued (in units)		13,800,000
Preferred units dividend rate (as a percent)		6.75%
Redemption price per unit (in dollars per unit)		$ 25.00
Redemption terms, change of control event, required period of notice (in days)		30 days
Redemption terms, change of control event, threshold days of occurrence (in days)		60 days
Change of control even, redemption price per share (in dollars per unit)		$ 25.25
Capital - Series B Preferred Units
Class of Stock [Line Items]
Units issued (in units)	6,200,000
Preferred units dividend rate (as a percent)	6.50%
Redemption price per unit (in dollars per unit)	$ 25.00
Redemption terms, change of control event, required period of notice (in days)	30 days
Redemption terms, change of control event, threshold days of occurrence (in days)	60 days
Change of control even, redemption price per share (in dollars per unit)	$ 25.25
2015 Unit Repurchase Program
Class of Stock [Line Items]
Unit repurchase program, authorized amount (in units)				$ 500,000,000