Segment Information (Schedule Of Segment Reporting Information) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Revenues from external customers	$ 3,897,247	$ 4,128,427
Intersegment Revenues	0	0
Revenues	3,897,247	4,128,427
Cost of products sold (exclusive of lower of cost or market inventory valuation adjustment)	3,199,205	3,347,125
Lower of cost or market inventory valuation adjustment	(232,346)	(103,838)
Operating expenses	331,592	320,288
Selling, general and administrative expenses	88,034	64,664
Depreciation and amortization	121,421	104,341
Income from operations	389,341	395,847
Earnings of equity method investments	2,100	1,279
Capital expenditures	63,735	69,539
Cash, cash equivalents, and total investments in marketable securities	496,139		$ 1,154,752
Total assets	12,123,430		10,994,601
Long-term debt	2,430,934		2,411,540
Refining
Segment Reporting Information [Line Items]
Revenues from external customers	3,372,666	3,655,867
Intersegment Revenues	74,744	93,318
Revenues	3,447,410	3,749,185
Cost of products sold (exclusive of lower of cost or market inventory valuation adjustment)	2,962,540	3,211,704
Lower of cost or market inventory valuation adjustment	(232,346)	(103,838)
Operating expenses	264,497	238,484
Selling, general and administrative expenses	26,977	26,371
Depreciation and amortization	74,415	67,175
Income from operations	351,327	309,289
Earnings of equity method investments	0	0
Capital expenditures	41,762	42,774
Cash, cash equivalents, and total investments in marketable securities	5,310		7,236
Total assets	7,338,824		6,465,155
Long-term debt	0		0
Lubricants and other specialty products
Segment Reporting Information [Line Items]
Revenues from external customers	493,334	444,840
Intersegment Revenues	0	0
Revenues	493,334	444,840
Cost of products sold (exclusive of lower of cost or market inventory valuation adjustment)	389,017	307,531
Lower of cost or market inventory valuation adjustment	0	0
Operating expenses	53,559	64,908
Selling, general and administrative expenses	39,719	30,654
Depreciation and amortization	20,171	8,864
Income from operations	(9,132)	32,883
Earnings of equity method investments	0	0
Capital expenditures	7,860	8,538
Cash, cash equivalents, and total investments in marketable securities	110,119		80,931
Total assets	2,368,141		1,506,209
Long-term debt	0		0
HEP
Segment Reporting Information [Line Items]
Revenues from external customers	31,138	27,457
Intersegment Revenues	103,359	101,427
Revenues	134,497	128,884
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	37,513	36,203
Selling, general and administrative expenses	2,620	3,122
Depreciation and amortization	23,830	25,141
Income from operations	70,534	64,418
Earnings of equity method investments	2,100	1,279
Capital expenditures	10,718	12,612
Cash, cash equivalents, and total investments in marketable securities	11,540		3,045
Total assets	2,202,110		2,142,027
Long-term debt	1,438,054		1,418,900
Corporate, Other and Eliminations
Segment Reporting Information [Line Items]
Revenues from external customers	109	263
Intersegment Revenues	(178,103)	(194,745)
Revenues	(177,994)	(194,482)
Cost of products sold (exclusive of lower of cost or market inventory valuation adjustment)	(152,352)	(172,110)
Lower of cost or market inventory valuation adjustment	0	0
Operating expenses	(23,977)	(19,307)
Selling, general and administrative expenses	18,718	4,517
Depreciation and amortization	3,005	3,161
Income from operations	(23,388)	(10,743)
Earnings of equity method investments	0	0
Capital expenditures	3,395	$ 5,615
Cash, cash equivalents, and total investments in marketable securities	369,170		1,063,540
Total assets	214,355		881,210
Long-term debt	$ 992,880		$ 992,640