ACQUISITIONS AND DISPOSITION (Details 3) (USD $)	12 Months Ended	0 Months Ended	1 Months Ended
	Dec. 31, 2011	May 11, 2011 West Texas LPG Pipeline Limited Partnership item	May 31, 2011 West Texas LPG Pipeline Limited Partnership
Disposition
Interest sold (as a percent)		20.00%	20.00%
Consideration on sale of ownership interest	$ 85,000,000	$ 85,000,000
Length of pipeline (in miles)		2,300
Ownership interest held by Chevron Pipeline Company (as a percent)		0.80
Recognized gain on sale of interest		$ 34,700,000