NET INCOME PER COMMON UNIT (Details 3) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revised net income per common unit
Net income allocable to common units	$ 30	$ 36	$ 122	$ 86	[1],[2]
Net income per common unit - basic (in dollars per unit)	$ 0.48	$ 0.58	$ 1.96	$ 1.50	[1],[2]
Net income per common unit - diluted (in dollars per unit)	$ 0.48	$ 0.58	$ 1.96	$ 1.50	[1],[2]
As previously presented
Revised net income per common unit
Net income allocable to common units				112
Net income per common unit - basic (in dollars per unit)				$ 1.94
Net income per common unit - diluted (in dollars per unit)				$ 1.94
Adjustment
Revised net income per common unit
Net income allocable to common units				$ (26)
Net income per common unit - basic (in dollars per unit)				$ (0.44)
Net income per common unit - diluted (in dollars per unit)				$ (0.44)

[1] Recast as discussed in Note 2.

[2] Recast as discussed in Note 7.