Segment Information (Schedule Of Segment Reporting Information) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Segment Reporting Information [Line Items]
Sales and other revenues	$ 4,128,427	$ 3,080,483
Intersegment Revenues	0	0
Revenues	4,128,427	3,080,483
Cost of products sold (exclusive of lower of cost or market inventory valuation adjustment)	3,347,125	2,641,176
Lower of cost or market inventory valuation adjustment	(103,838)	11,823
Operating expenses	320,288	307,725
Selling, general and administrative expenses	64,664	57,255
Depreciation and amortization	104,341	96,040
Income (loss) from operations	395,847	(33,536)
Earnings (loss) of equity method investments	1,279	1,840
Net income (loss)	288,862	(37,782)
Capital expenditures	69,539	59,757
Cash, cash equivalents, and total investments in marketable securities	781,467		$ 630,757
Total assets	10,912,074		10,692,154
Long-term debt	2,382,874		2,498,993
Refining
Segment Reporting Information [Line Items]
Sales and other revenues	3,655,867	2,742,747
Intersegment Revenues	93,318	79,888
Revenues	3,749,185	2,822,635
Cost of products sold (exclusive of lower of cost or market inventory valuation adjustment)	3,211,704	2,559,155
Lower of cost or market inventory valuation adjustment	(103,838)	11,531
Operating expenses	238,484	254,370
Selling, general and administrative expenses	26,371	22,368
Depreciation and amortization	67,175	69,438
Income (loss) from operations	309,289	(94,227)
Earnings (loss) of equity method investments	0	0
Capital expenditures	42,774	47,434
Cash, cash equivalents, and total investments in marketable securities	6,703		7,488
Total assets	6,830,385		6,474,666
Long-term debt	0		0
Lubricants and other specialty products
Segment Reporting Information [Line Items]
Sales and other revenues	444,840	321,269
Intersegment Revenues	0	0
Revenues	444,840	321,269
Cost of products sold (exclusive of lower of cost or market inventory valuation adjustment)	307,531	230,781
Lower of cost or market inventory valuation adjustment	0	292
Operating expenses	64,908	39,319
Selling, general and administrative expenses	30,654	13,320
Depreciation and amortization	8,864	5,304
Income (loss) from operations	32,883	32,253
Earnings (loss) of equity method investments	0	0
Capital expenditures	8,538	1,835
Cash, cash equivalents, and total investments in marketable securities	118,926		41,756
Total assets	1,445,978		1,610,472
Long-term debt	0		0
HEP
Segment Reporting Information [Line Items]
Sales and other revenues	27,457	16,609
Intersegment Revenues	101,427	89,025
Revenues	128,884	105,634
Cost of products sold (exclusive of lower of cost or market inventory valuation adjustment)	0	0
Lower of cost or market inventory valuation adjustment	0	0
Operating expenses	36,203	32,552
Selling, general and administrative expenses	3,122	2,637
Depreciation and amortization	25,141	18,373
Income (loss) from operations	64,418	52,072
Earnings (loss) of equity method investments	1,279	1,840
Capital expenditures	12,612	8,265
Cash, cash equivalents, and total investments in marketable securities	8,565		7,776
Total assets	2,173,063		2,191,984
Long-term debt	1,390,952		1,507,308
Corporate, Other and Eliminations
Segment Reporting Information [Line Items]
Sales and other revenues	263	(142)
Intersegment Revenues	(194,745)	(168,913)
Revenues	(194,482)	(169,055)
Cost of products sold (exclusive of lower of cost or market inventory valuation adjustment)	(172,110)	(148,760)
Lower of cost or market inventory valuation adjustment	0	0
Operating expenses	(19,307)	(18,516)
Selling, general and administrative expenses	4,517	18,930
Depreciation and amortization	3,161	2,925
Income (loss) from operations	(10,743)	(23,634)
Earnings (loss) of equity method investments	0	0
Capital expenditures	5,615	$ 2,223
Cash, cash equivalents, and total investments in marketable securities	647,273		573,737
Total assets	462,648		415,032
Long-term debt	$ 991,922		$ 991,685