Business Segment Information (Reconciliation Of Segment Margin To (Loss) Income Before Income Taxes) (Details) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010	Jul. 22, 2013
Segment Reporting Information [Line Items]
Capital Expenditures		$ 704,205,000		$ 426,298,000	[1]	$ 186,994,000	[1]
Business Acquisition, Transaction Costs									230,900,000
Segment margin	262,333,000	280,360,000	[2]	262,333,000	[2]	202,501,000	[2]	202,501,000
Corporate general and administrative expenses	(38,372,000)	(43,353,000)						(31,685,000)
Depreciation, amortization and impairment								(62,161,000)
Interest income (expense), net	(40,923,000)	(48,583,000)		(40,923,000)		(35,771,000)
Interest expense								(35,771,000)
Distributable cash from equity investees in excess of equity in earnings	(24,464,000)	(23,889,000)						(16,681,000)
Non-cash items not included in segment margin	(5,280,000)	(7,551,000)						(1,531,000)
Cash payments from direct financing leases in excess of earnings	(5,016,000)	(5,110,000)						(4,615,000)
Discontinued Operations for Segment Margin Reconciliation	1,004,000	(2,241,000)						97,000
Income (loss) before income taxes		84,849,000		88,132,000		50,154,000
Pipeline Transportation [Member]
Segment Reporting Information [Line Items]
Capital Expenditures		225,073,000		328,710,000		14,501,000	[1]
Segment margin		108,879,000		96,539,000		67,908,000	[2]
SEKCO [Member] | Pipeline Transportation [Member]
Segment Reporting Information [Line Items]
Capital Expenditures		$ 94,300,000		$ 63,700,000

[1] 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

[2] 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