INVESTMENT IN NUSTAR ENERGY Narrative 2 (Details) (NuStar Energy [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
TexStar Asset Acquisition [Member]
Schedule of Equity Method Investments [Line Items]
NuStar Energy's Effective date of acquisition	Dec. 13, 2012
NuStar Energy's Percentage acquired	100.00%
NuStar Energy's Purchase price of acquired entity	$ 325.4
NuStar Energy's Acquired pipeline miles	140 miles
NuStar Energy's Acquired storage capacity (in barrels)	600,000
San Antonio Refinery Sale [Member]
Schedule of Equity Method Investments [Line Items]
NuStar Energy's Disposal Date	Jan. 01, 2013
NuStar Energy's Proceeds from sale or disposition of assets	115.0
Sale of Asphalt Operations [Member]
Schedule of Equity Method Investments [Line Items]
NuStar Energy's Disposal Date	Sep. 28, 2012
NuStar Energy's Percent Ownership Interest Sold	50.00%
NuStar Energy's Sale Price Of Class A Equity Interests	175.0
NuStar Energy's Fair value of Class B equity interests	52.0
NuStar Energy's Proceeds from sale of inventory	263.8
NuStar Energy's Gain (loss) from sale or disposition of assets	22.1
NuStar Energy's Asset Impairment Losses	$ 244.3