Segment Information (Schedule Of Segment Reporting Information) (Details) (USD $)	3 Months Ended				6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2011		Jun. 30, 2010		Dec. 31, 2010
Sales and other revenues	$ 2,967,133,000		$ 2,145,860,000		$ 5,293,718,000		$ 4,020,150,000
Depreciation and amortization	31,832,000		28,824,000		63,140,000		56,581,000
Income (loss) from operations	330,179,000		132,164,000		489,278,000		109,420,000
Capital expenditures	82,267,000		45,432,000		156,305,000		76,530,000
Cash, cash equivalents and investments in marketable securities	517,347,000				517,347,000				230,444,000
Total assets	4,165,303,000				4,165,303,000				3,701,475,000
Long-term debt	838,866,000				838,866,000				810,561,000
HEP [Member]
Sales and other revenues	50,940,000	[1]	45,483,000	[1]	95,945,000	[1]	86,172,000	[1]
Depreciation and amortization	7,309,000	[1]	7,187,000	[1]	14,544,000	[1]	13,992,000	[1]
Income (loss) from operations	27,692,000	[1]	22,888,000	[1]	51,303,000	[1]	41,149,000	[1]
Capital expenditures	11,425,000	[1]	2,576,000	[1]	22,900,000	[1]	4,487,000	[1]
Cash, cash equivalents and investments in marketable securities	1,402,000	[1]			1,402,000	[1]			403,000	[1]
Total assets	678,508,000	[1]			678,508,000	[1]			669,820,000	[1]
Long-term debt	510,566,000	[1]			510,566,000	[1]			482,271,000	[1]
Segment revenues from external customers	13,800,000		8,400,000		24,700,000		15,500,000
Refining [Member]
Sales and other revenues	2,953,226,000		2,137,361,000		5,268,318,000		4,004,534,000
Depreciation and amortization	23,478,000		20,599,000		46,461,000		41,325,000
Income (loss) from operations	321,032,000		124,549,000		473,136,000		99,969,000
Capital expenditures	25,152,000		42,492,000		45,784,000		70,764,000
Cash, cash equivalents and investments in marketable securities
Total assets	2,614,120,000				2,614,120,000				2,490,193,000
Long-term debt
Corporate And Other [Member]
Sales and other revenues	153,000		150,000		801,000		217,000
Depreciation and amortization	1,252,000		1,333,000		2,549,000		1,854,000
Income (loss) from operations	(18,040,000)		(15,111,000)		(34,138,000)		(30,877,000)
Capital expenditures	45,690,000		364,000		87,621,000		1,279,000
Cash, cash equivalents and investments in marketable securities	515,945,000				515,945,000				230,041,000
Total assets	901,439,000				901,439,000				573,531,000
Long-term debt	344,996,000				344,996,000				345,215,000
Consolidations And Eliminations [Member]
Sales and other revenues	(37,186,000)		(37,134,000)		(71,346,000)		(70,773,000)
Depreciation and amortization	(207,000)		(295,000)		(414,000)		(590,000)
Income (loss) from operations	(505,000)		(162,000)		(1,023,000)		(821,000)
Capital expenditures
Cash, cash equivalents and investments in marketable securities
Total assets	(28,764,000)				(28,764,000)				(32,069,000)
Long-term debt	$ (16,696,000)				$ (16,696,000)				$ (16,925,000)

[1] HEP segment revenues from external customers were $13.8 million and $8.4 million for the three months ended June 30, 2011 and 2010, respectively, and $24.7 million and $15.5 million for the six months ended June 30, 2011 and 2010, respectively.