Business Segment Information (Schedule Of Segment Information) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								9 Months Ended	12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Sep. 30, 2012	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Segment Reporting Information [Line Items]
Segment margin									$ 262,333	$ 280,360	[1]	$ 262,333	[1]	$ 202,501	[1]	$ 202,501
Intersegment	961,035	1,090,293	1,068,694	1,014,808	919,056	895,023	797,705	755,577		4,134,830		3,367,361		2,437,797
Total revenues	961,035	1,090,293	1,068,694	1,014,808	919,056	895,023	797,705	755,577		4,134,830		3,367,361		2,437,797
Capital Expenditures										704,205		426,298	[2]	186,994	[2]
ExternalCustomerRevenues										4,134,830		3,367,361		2,437,797
IntersegmentRevenues										0		0		0
Pipeline Transportation [Member]
Segment Reporting Information [Line Items]
Segment margin										108,879		96,539		67,908	[1]
Intersegment										86,508		76,290		62,190
Total revenues										86,508		76,290		62,190
Capital Expenditures										225,073		328,710		14,501	[2]
ExternalCustomerRevenues										69,375		61,706		50,391
IntersegmentRevenues										17,133		14,584		11,799
Refinery Services [Member]
Segment Reporting Information [Line Items]
Segment margin										75,361		72,883		74,618	[1]
Intersegment										205,985		196,017		201,711
Total revenues										205,985		196,017		201,711
Capital Expenditures										3,258		2,692		1,846	[2]
ExternalCustomerRevenues										216,860		205,110		210,394
IntersegmentRevenues										(10,875)		(9,093)		(8,683)
Supply And Logistics [Member]
Segment Reporting Information [Line Items]
Segment margin										96,120		92,911		59,975	[1]
Intersegment										3,842,337		3,095,054		2,173,896
Total revenues										3,842,337		3,095,054		2,173,896
Capital Expenditures										475,874		94,896		170,647	[2]
ExternalCustomerRevenues										3,848,595		3,100,545		2,177,012
IntersegmentRevenues										(6,258)		(5,491)		(3,116)
SEKCO [Member] | Pipeline Transportation [Member]
Segment Reporting Information [Line Items]
Capital Expenditures										94,300		63,700
Gulf Of Mexico Crude Oil Pipelines [Member] | Pipeline Transportation [Member]
Segment Reporting Information [Line Items]
Capital Expenditures												$ 205,600

[1] A reconciliation of Segment Margin to income from continuing operations before income taxes for each year presented is as follows: Year Ended December 31, 2013 2012 2011Segment Margin$280,360 $262,333 $202,501Corporate general and administrative expenses(43,353) (38,372) (31,685)Depreciation and amortization(64,784) (61,150) (62,161)Interest expense(48,583) (40,923) (35,771)Distributable cash from equity investees in excess of equity in earnings(23,889) (24,464) (16,681)Non-cash items not included in Segment Margin(7,551) (5,280) (1,531)Cash payments from direct financing leases in excess of earnings(5,110) (5,016) (4,615)Discontinued operations(2,241) 1,004 97Income from continuing operations before income taxes$84,849 $88,132 $50,154

[2] Capital expenditures include maintenance and growth capital expenditures, such as fixed asset additions (including enhancements to existing facilities and construction of internal growth projects) as well as acquisitions of businesses and interests in equity investees. In addition to construction of internal growth projects, capital spending in our pipeline transportation segment included $94.3 million and $63.7 million during the years ended December 31, 2013 and December 31, 2012 representing capital contributions to our SEKCO equity investee to fund our share of the construction costs for its pipeline. During 2013, capital spending in our supply and logistics segment also included $230.9 million for the acquisition of our offshore marine transportation assets. During 2012, capital spending in our pipeline transportation segment also included $205.6 million for the acquisition of interests in several Gulf of Mexico pipelines