Segment Disclosures (Schedule Of Business Segment Reporting Information) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Revenues	$ 782,806	$ 628,935
Operating expenses	149,508	146,025
Cost of product sales	249,236	169,094
Other operating (income) expense	511	(6,941)
(Earnings) losses of non-controlled entities	(43,660)	(31,255)
Operating margin	427,211	352,012
Depreciation, amortization and impairment	63,534	61,871
G&A expense	36,908	45,995
Operating profit	326,769	244,146
Operating Segments [Member] | Refined Products Segment [Member]
Segment Reporting Information [Line Items]
Revenues	628,889	468,515
Operating expenses	105,882	102,692
Cost of product sales	233,342	162,430
Other operating (income) expense	(1,892)	(5,368)
(Earnings) losses of non-controlled entities	(14,220)	1,047
Operating margin	305,777	207,714
Depreciation, amortization and impairment	46,059	44,427
G&A expense	26,654	32,813
Operating profit	233,064	130,474
Operating Segments [Member] | Crude Oil Pipeline and Terminals Segment [Member]
Segment Reporting Information [Line Items]
Revenues	155,499	161,358
Operating expenses	46,772	45,706
Cost of product sales	15,894	6,664
Other operating (income) expense	2,403	(1,573)
(Earnings) losses of non-controlled entities	(29,440)	(32,302)
Operating margin	119,870	142,863
Depreciation, amortization and impairment	15,911	16,009
G&A expense	10,254	13,182
Operating profit	93,705	113,672
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	(1,582)	(938)
Operating expenses	(3,146)	(2,373)
Cost of product sales	0	0
Other operating (income) expense	0	0
(Earnings) losses of non-controlled entities	0	0
Operating margin	1,564	1,435
Depreciation, amortization and impairment	1,564	1,435
G&A expense	0	0
Operating profit	0	0
Service [Member]
Segment Reporting Information [Line Items]
Revenues	458,395	460,792
Service [Member] | Operating Segments [Member] | Refined Products Segment [Member]
Segment Reporting Information [Line Items]
Revenues	314,319	309,571
Service [Member] | Operating Segments [Member] | Crude Oil Pipeline and Terminals Segment [Member]
Segment Reporting Information [Line Items]
Revenues	145,658	152,159
Service [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	(1,582)	(938)
Product [Member]
Segment Reporting Information [Line Items]
Revenues	319,120	162,995
Product [Member] | Operating Segments [Member] | Refined Products Segment [Member]
Segment Reporting Information [Line Items]
Revenues	312,986	157,282
Product [Member] | Operating Segments [Member] | Crude Oil Pipeline and Terminals Segment [Member]
Segment Reporting Information [Line Items]
Revenues	6,134	5,713
Product [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	0	0
Product and Service, Other [Member]
Segment Reporting Information [Line Items]
Revenues	5,291	5,148
Product and Service, Other [Member] | Operating Segments [Member] | Refined Products Segment [Member]
Segment Reporting Information [Line Items]
Revenues	1,584	1,662
Product and Service, Other [Member] | Operating Segments [Member] | Crude Oil Pipeline and Terminals Segment [Member]
Segment Reporting Information [Line Items]
Revenues	3,707	3,486
Product and Service, Other [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	$ 0	$ 0