Business Segment Information (Schedule Of Segment Information) (Details) (USD $)	3 Months Ended										12 Months Ended
	Dec. 31, 2011		Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010		Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Segment Reporting Information [Line Items]
Segment margin											$ 202,501,000	[1]	$ 149,564,000		$ 134,490,000
Capital expenditures											186,994,000	[2]	336,730,000	[2]	29,196,000	[2]
Net fixed and other long-term assets	1,354,740,000	[3]				1,226,668,000	[3]				1,354,740,000	[3]	1,226,668,000	[3]	958,883,000	[3]
External customers											3,089,669,000		2,101,324,000		1,435,360,000
Total revenues	806,881,000		830,200,000	762,790,000	689,798,000	602,243,000	[4]	576,012,000	456,538,000	466,531,000	3,089,669,000		2,101,324,000		1,435,360,000
Pipeline Transportation [Member]
Segment Reporting Information [Line Items]
Segment margin											67,908,000	[1]	48,305,000		42,162,000
Capital expenditures											14,501,000	[2]	333,557,000	[2]	3,043,000	[2]
Net fixed and other long-term assets	594,102,000	[3]				604,572,000	[3]				594,102,000	[3]	604,572,000	[3]	279,574,000	[3]
External customers											50,391,000		45,367,000		44,461,000
Intersegment											11,799,000	[5]	10,285,000	[5]	6,490,000	[5]
Total revenues											62,190,000		55,652,000		50,951,000
Refinery Services [Member]
Segment Reporting Information [Line Items]
Segment margin											74,618,000	[1]	62,923,000		51,844,000
Capital expenditures											1,846,000	[2]	1,433,000	[2]	2,572,000	[2]
Net fixed and other long-term assets	384,340,000	[3]				400,164,000	[3]				384,340,000	[3]	400,164,000	[3]	409,556,000	[3]
External customers											210,394,000		158,456,000		147,240,000
Intersegment											(8,683,000)	[5]	(7,396,000)	[5]	(5,875,000)	[5]
Total revenues											201,711,000		151,060,000		141,365,000
Supply And Logistics [Member]
Segment Reporting Information [Line Items]
Segment margin											59,975,000	[1]	38,336,000		40,484,000
Capital expenditures											170,647,000	[2]	1,740,000	[2]	23,581,000	[2]
Net fixed and other long-term assets	376,298,000	[3]				221,932,000	[3]				376,298,000	[3]	221,932,000	[3]	269,753,000	[3]
External customers											2,828,884,000		1,897,501,000		1,243,659,000
Intersegment											(3,116,000)	[5]	(2,889,000)	[5]	(615,000)	[5]
Total revenues											2,825,768,000		1,894,612,000		1,243,044,000
Investments in equity investees	12,200,000					13,700,000					12,200,000		13,700,000		15,100,000
CHOPS [Member] | Pipeline Transportation [Member]
Segment Reporting Information [Line Items]
Investments in equity investees	$ 314,700,000					$ 329,700,000					$ 314,700,000		$ 329,700,000

[1] A reconciliation of Segment Margin to income (loss) before income taxes for each year presented is as follows:

[2] Capital expenditures include fixed asset additions and acquisitions of businesses.

[3] Net fixed and other long-term assets is a measure used by management in evaluating the results of our operations on a segment basis. Current assets are not allocated to segments as the amounts are not meaningful in evaluating the success of the segment's operations. Amounts for our Pipeline Transportation segment include our investment in CHOPS totaling $314.7 million and $329.7 million at December 31, 2011 and 2010, respectively. Amounts for our Supply and Logistics segment include investments in equity investees totaling $12.2 million, $13.7 million and $15.1 million at December 31, 2011, 2010 and 2009, respectively.

[4] Includes executive compensation expense related to Series B and Class B awards borne entirely by our general partner in the amounts of $75.6 million (see Note 15).

[5] Intersegment sales were conducted on an arm's length basis.