CASH DISTRIBUTIONS (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2012	Mar. 31, 2011
CASH DISTRIBUTIONS
Quarterly cash distributions (in dollars per unit)	$ 0.77	$ 0.75
Cash distribution	$ 42

Current quarterly distribution per common unit if sufficient Available Cash parameters (as defined by partnership agreement) have been met.

No definition available.

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Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration