Business Segment Information (Schedule Of Segment Information) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Jul. 22, 2013
Segment Reporting Information [Line Items]
Segment margin	$ 64,824,000	$ 65,929,000	$ 207,331,000	$ 189,012,000
Capital Expenditures	330,088,000	37,199,000	509,219,000	379,802,000
Pipeline Transportation Services Revenues	23,217,000	19,164,000	66,533,000	55,794,000
Refinery Services Revenues	52,410,000	47,977,000	153,370,000	144,342,000
Supply And Logistics Revenues	1,184,191,000	974,696,000	3,400,786,000	2,815,849,000
External customers	1,259,818,000	1,041,837,000	3,620,689,000	3,015,985,000
Intersegment	0	0	0	0
Total revenues	1,259,818,000	1,041,837,000	3,620,689,000	3,015,985,000
Business Acquisition, Transaction Costs					230,900,000
Pipeline Transportation [Member]
Segment Reporting Information [Line Items]
Segment margin	29,860,000	23,295,000	81,512,000	69,427,000
Capital Expenditures	38,514,000	21,764,000	159,922,000	300,093,000
External customers	16,636,000	16,190,000	53,121,000	44,564,000
Intersegment	6,581,000	2,974,000	13,412,000	11,230,000
Refinery Services [Member]
Segment Reporting Information [Line Items]
Segment margin	19,163,000	18,983,000	55,824,000	53,510,000
Capital Expenditures	632,000	1,025,000	2,296,000	2,295,000
External customers	55,025,000	50,378,000	161,492,000	151,326,000
Intersegment	(2,615,000)	(2,401,000)	(8,122,000)	(6,984,000)
Supply And Logistics [Member]
Segment Reporting Information [Line Items]
Segment margin	15,801,000	23,651,000	69,995,000	66,075,000
Capital Expenditures	290,942,000	14,410,000	347,001,000	77,414,000
External customers	1,188,157,000	975,269,000	3,406,076,000	2,820,095,000
Intersegment	(3,966,000)	(573,000)	(5,290,000)	(4,246,000)
Sekco [Member] | Pipeline Transportation [Member]
Segment Reporting Information [Line Items]
Capital Expenditures	5,200,000	5,700,000	71,400,000	57,100,000
Gulf Of Mexico Crude Oil Pipelines [Member] | Pipeline Transportation [Member]
Segment Reporting Information [Line Items]
Capital Expenditures				$ 205,600,000