MEMBERS' EQUITY (Tables)

12 Months Ended

Dec. 31, 2012

MEMBERS’ EQUITY [Abstract]

Our cash distributions paid related to the periods shown

	Year Ended December 31,
	2012		2011		2010
	(Thousands of Dollars, Except Per Unit Data)
Cash distributions per unit	$	2.11	$	1.98	$	1.87
Total cash distributions	$	89,860	$	84,252	$	79,517

Accumulated Other Comprehensive Income (Loss) [Table Text Block]

	Share of NuStar Energy’s Other Comprehensive Income (Loss)			Pension and Other Postretirement Benefit Plan Adjustments, net of tax			Accumulated Other Comprehensive (Loss) Income
	(Thousands of Dollars)
Balance as of January 1, 2010	$	1,455		$	(8,447	)	$	(6,992	)
Activity	6,679			784			7,463
Balance as of December 31, 2010	8,134			(7,663		)	471
Activity	(12,580		)	(10,556		)	(23,136		)
Balance as of December 31, 2011	(4,446		)	(18,219		)	(22,665		)
Activity	(4,297		)	(5,060		)	(9,357		)
Balance as of December 31, 2012	$	(8,743	)	$	(23,279	)	$	(32,022	)