ORGANIZATION - Additional Information (Detail) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011 mi MMbbl	Nov. 19, 2010
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Master limited partnership formation, date	1986
Pipeline	6,100
Terminal aggregate storage capacity	64
Contract operation of third-party pipeline, approximate miles	2,800
General partner interest	0.50%
Aggregate consideration received by unitholders		20
Minimum
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Active products terminals	100