CASH DISTRIBUTIONS (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
CASH DISTRIBUTIONS
Quarterly cash distributions (in dollars per unit)									$ 0.81
Cash distributions (in dollars per unit)									$ 3.18		$ 3.10		$ 3.04
Cash distributions	$ 52	$ 52	$ 43	$ 43	$ 43	$ 43	$ 42	$ 42	$ 188	[1]	$ 169	[1]	$ 155	[1]
Maximum
Incentive distributions
Number of days after the end of each quarter for making cash distribution									45 days
General Partner
Incentive distributions
Incentive distributions									$ 0		$ 0		$ 0
Percentage of priority income allocations for incentive distributions									100.00%
General Partner | Target level of $0.81 per common unit | Minimum
Incentive distributions
Combined general partner interest and incentive distribution interest percentage of quarterly distributions of Available Cash exceeding target levels, threshold									15.00%
Target level of quarterly distributions (in dollars per common unit)	$ 0.81								$ 0.81
General Partner | Target level of $0.88 per common unit | Maximum
Incentive distributions
Combined general partner interest and incentive distribution interest percentage of quarterly distributions of Available Cash exceeding target levels, threshold									25.00%
General Partner | Target level of $0.88 per common unit | Minimum
Incentive distributions
Target level of quarterly distributions (in dollars per common unit)	$ 0.88								$ 0.88

[1] (a) Recast as discussed in Note 2 and Note 6.