CASH DISTRIBUTIONS (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
CASH DISTRIBUTIONS
Cash distributions (in dollars per unit)	$ 0.81	$ 0.78	$ 1.62	$ 1.56
Cash distributions	$ 52	$ 43	$ 103	$ 85	[1]
General Partner
Incentive distributions
Incentive distributions	$ 0	$ 0	$ 0	$ 0

[1] (a) Recast as discussed in Note 2.