RELATED PARTY TRANSACTIONS (Tables)

3 Months Ended

Mar. 31, 2013

Related Party Transactions [Abstract]

Schedule of Related Party Transactions [Text Block]

	Three Months Ended March 31,
	2013		2012
	(Thousands of Dollars)
Expenses for payroll, employee benefit plans and unit-based compensation	$	52,905	$	58,953
Other expenses	$	93	$	96