Segment Information (Schedule Of Segment Reporting Information) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Segment Reporting Information [Line Items]
Revenues from external customers	$ 3,400,545	$ 3,897,247
Intersegment Revenues	0	0
Revenues	3,400,545	3,897,247
Cost of products sold (exclusive of lower of cost or market inventory valuation adjustment)	2,693,726	3,199,205
Lower of cost or market inventory valuation adjustment	560,464	(232,346)
Operating expenses	328,345	331,592
Selling, general and administrative expenses	87,737	88,034
Depreciation and amortization	140,575	121,421
Income from operations	(410,302)	389,341
Earnings of equity method investments	1,714	2,100
Capital expenditures	83,749	63,735
Cash, cash equivalents, and total investments in marketable securities	909,126		$ 885,162
Total assets	11,221,794		12,164,841
Long-term debt	2,496,006		2,455,640
Refining
Segment Reporting Information [Line Items]
Revenues from external customers	2,850,620	3,372,666
Intersegment Revenues	84,246	74,744
Revenues	2,934,866	3,447,410
Cost of products sold (exclusive of lower of cost or market inventory valuation adjustment)	2,468,751	2,962,540
Lower of cost or market inventory valuation adjustment	560,464	(232,346)
Operating expenses	259,174	264,497
Selling, general and administrative expenses	31,000	26,977
Depreciation and amortization	90,179	74,415
Income from operations	(474,702)	351,327
Earnings of equity method investments	0	0
Capital expenditures	53,014	41,762
Cash, cash equivalents, and total investments in marketable securities	0		9,755
Total assets	6,326,831		7,189,094
Long-term debt	0		0
Lubricants and other specialty products
Segment Reporting Information [Line Items]
Revenues from external customers	523,499	493,334
Intersegment Revenues	3,104	0
Revenues	526,603	493,334
Cost of products sold (exclusive of lower of cost or market inventory valuation adjustment)	391,380	389,017
Lower of cost or market inventory valuation adjustment	0	0
Operating expenses	54,131	53,559
Selling, general and administrative expenses	48,962	39,719
Depreciation and amortization	22,049	20,171
Income from operations	10,081	(9,132)
Earnings of equity method investments	0	0
Capital expenditures	9,081	7,860
Cash, cash equivalents, and total investments in marketable securities	164,317		169,277
Total assets	2,123,451		2,223,418
Long-term debt	0		0
Corporate, Other and Eliminations
Segment Reporting Information [Line Items]
Revenues from external customers	0	109
Intersegment Revenues	(188,778)	(178,103)
Revenues	(188,778)	(177,994)
Cost of products sold (exclusive of lower of cost or market inventory valuation adjustment)	(166,405)	(152,352)
Lower of cost or market inventory valuation adjustment	0	0
Operating expenses	(19,941)	(23,977)
Selling, general and administrative expenses	5,073	18,718
Depreciation and amortization	4,369	3,005
Income from operations	(11,874)	(23,388)
Earnings of equity method investments	0	0
Capital expenditures	2,712	3,395
Cash, cash equivalents, and total investments in marketable securities	725,527		692,843
Total assets	576,070		546,892
Long-term debt	993,852		993,609
HEP
Segment Reporting Information [Line Items]
Revenues from external customers	26,426	31,138
Intersegment Revenues	101,428	103,359
Revenues	127,854	134,497
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	34,981	37,513
Selling, general and administrative expenses	2,702	2,620
Depreciation and amortization	23,978	23,830
Income from operations	66,193	70,534
Earnings of equity method investments	1,714	2,100
Capital expenditures	18,942	$ 10,718
Cash, cash equivalents, and total investments in marketable securities	19,282		13,287
Total assets	2,195,442		2,205,437
Long-term debt	$ 1,502,154		$ 1,462,031