Segment Information (Schedule Of Segment Reporting Information) (Details) (USD $)	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011		Dec. 31, 2011
Segment Reporting Information [Line Items]
Sales and other revenues	$ 5,204,798,000		$ 5,173,398,000		$ 14,943,217,000		$ 10,467,116,000
Depreciation and amortization	65,112,000		43,240,000		178,162,000		106,380,000
Income (loss) from operations	978,304,000		869,207,000		2,211,005,000		1,358,485,000
Capital expenditures	79,517,000		117,918,000		207,537,000		274,223,000
Cash, Cash Equivalents, And Investments In Marketable Securities	2,343,336,000				2,343,336,000				1,840,610,000
Assets	10,345,936,000				10,345,936,000				9,576,243,000
Long-term Debt	1,346,227,000				1,346,227,000				1,214,742,000
Refining [Member]
Segment Reporting Information [Line Items]
Sales and other revenues	5,192,649,000	[1]	5,164,853,000	[1]	14,907,849,000	[1]	10,432,720,000	[1]
Depreciation and amortization	47,890,000	[1]	35,070,000	[1]	133,087,000	[1]	81,875,000	[1]
Income (loss) from operations	973,586,000	[1]	884,997,000	[1]	2,201,648,000	[1]	1,357,739,000	[1]
Capital expenditures	70,069,000	[1]	46,294,000	[1]	171,865,000	[1]	92,078,000	[1]
Cash, Cash Equivalents, And Investments In Marketable Securities	557,000	[1]			557,000	[1]			0	[1]
Assets	6,567,224,000	[1]			6,567,224,000	[1]			6,280,426,000	[1]
Long-term Debt	0	[1]			0	[1]			0
Corporate And Other [Member]
Segment Reporting Information [Line Items]
Sales and other revenues	352,000		299,000		912,000		1,100,000
Depreciation and amortization	4,793,000		872,000		7,013,000		2,719,000
Income (loss) from operations	(31,871,000)		(40,135,000)		(89,899,000)		(73,689,000)
Capital expenditures	3,765,000		3,523,000		6,370,000		6,350,000
Cash, Cash Equivalents, And Investments In Marketable Securities	2,340,786,000				2,340,786,000				1,834,241,000
Assets	2,426,067,000				2,426,067,000				1,997,601,000
Long-term Debt	487,843,000				487,843,000				705,331,000
Consolidations And Eliminations [Member]
Segment Reporting Information [Line Items]
Sales and other revenues	(60,699,000)		(40,885,000)		(172,794,000)		(111,620,000)
Depreciation and amortization	(207,000)		(207,000)		(621,000)		(621,000)
Income (loss) from operations	(548,000)		(242,000)		(1,587,000)		(1,265,000)
Capital expenditures	0		0		0		0
Cash, Cash Equivalents, And Investments In Marketable Securities	0				0				0
Assets	(56,506,000)				(56,506,000)				(120,444,000)
Long-term Debt	(16,050,000)				(16,050,000)				(89,350,000)
HEP [Member]
Segment Reporting Information [Line Items]
Sales and other revenues	72,496,000	[2]	49,131,000	[2]	207,250,000	[2]	144,916,000	[2]
Depreciation and amortization	12,636,000	[2]	7,505,000	[2]	38,683,000	[2]	22,407,000	[2]
Income (loss) from operations	37,137,000	[2]	24,587,000	[2]	100,843,000	[2]	75,700,000	[2]
Capital expenditures	5,683,000	[2]	68,101,000	[2]	29,302,000	[2]	175,795,000	[2]
Cash, Cash Equivalents, And Investments In Marketable Securities	1,993,000	[2]			1,993,000	[2]			6,369,000	[2]
Segment revenues from external customers	11,900,000		8,300,000		34,600,000		33,000,000
Assets	1,409,151,000	[2]			1,409,151,000	[2]			1,418,660,000	[2]
Long-term Debt	$ 874,434,000	[2]			$ 874,434,000	[2]			$ 598,761,000	[2]
Twelve Inch Refined Products Pipeline Project
Segment Reporting Information [Line Items]
Percentage of interest owned in pipeline project					75.00%

[1] The Refining segment reflects the operations of the El Dorado and Cheyenne Refineries beginning July 1, 2011 (date of Holly-Frontier merger).

[2] HEP acquired our 75% interest in UNEV in July 2012. As a result, we have recast our HEP segment information to include the UNEV Pipeline operations as a consolidated subsidiary of HEP for all periods presented. For the three and nine months ended September 30, 2012, UNEV Pipeline revenues were $3.0 million and $10.8 million, respectively. The UNEV Pipeline was previously presented under Corporate and Other.