Segment Information (Schedule Of Segment Reporting Information) (Details) - USD ($) $ in Thousands	3 Months Ended																12 Months Ended
	Dec. 31, 2017		Sep. 30, 2017		Jun. 30, 2017		Mar. 31, 2017		Dec. 31, 2016		Sep. 30, 2016		Jun. 30, 2016		Mar. 31, 2016		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Sales and other revenues	$ 3,992,705		$ 3,719,247		$ 3,458,864		$ 3,080,483		$ 2,955,068		$ 2,847,270		$ 2,714,638		$ 2,018,724		$ 14,251,299	$ 10,535,700	$ 13,237,920
Intersegment Revenues																	0	0	0
Revenues																	14,251,299	10,535,700	13,237,920
Refining and Marketing Costs																	11,467,799	8,765,927	10,239,218
Lower of cost or market inventory valuation adjustment	93,400		(111,100)						(97,700)				138,500		56,100		(108,685)	(291,938)	226,979
Operating Expenses																	1,294,234	1,018,839	1,060,373
Selling, General and Administrative Expense																	264,874	125,648	120,846
Depreciation, Depletion and Amortization																	409,937	363,027	346,151
Income (loss) from operations	365,652	[1],[2]	$ 449,280	[1],[2]	121,685	[1],[2]	$ (32,724)	[1],[2]	112,292	[3],[4]	$ 124,765	[3],[4]	$ (420,542)	[3],[4]	$ 83,598	[3],[4]	903,893	(99,887)	1,244,353
Income (Loss) from Equity Method Investments																	12,510	14,213	(3,738)
Goodwill, Impairment Loss																		654,084
Asset Impairment Charges					$ 23,200												19,247	654,084	0
Property, Plant and Equipment, Additions																	272,259	479,790	676,155
Assets	10,692,154								9,435,661								10,692,154	9,435,661	8,388,299
Refining
Segment Reporting Information [Line Items]
Sales and other revenues																	12,579,672	10,002,831	12,677,901
Intersegment Revenues																	338,390	317,884	361,211
Revenues																	12,918,062	10,320,715	13,039,112
Refining and Marketing Costs																	11,009,345	9,003,505	10,472,268
Lower of cost or market inventory valuation adjustment																	(107,479)	(287,848)	225,736
Operating Expenses																	1,006,675	909,724	940,629
Selling, General and Administrative Expense																	103,067	92,297	91,279
Depreciation, Depletion and Amortization																	289,434	281,701	273,091
Income (loss) from operations																	597,773	(332,748)	1,036,109
Income (Loss) from Equity Method Investments																	0	0	0
Goodwill, Impairment Loss																		654,084
Asset Impairment Charges																	19,247
Property, Plant and Equipment, Additions																	176,533	357,407	461,326
Assets	6,474,666								6,048,091								6,474,666	6,048,091	6,286,154
324191 Petroleum Lubricating Oil and Grease Manufacturing [Member]
Segment Reporting Information [Line Items]
Sales and other revenues																	1,594,036	464,359	493,282
Intersegment Revenues																	0	0	0
Revenues																	1,594,036	464,359	493,282
Refining and Marketing Costs																	1,093,984	377,136	414,553
Lower of cost or market inventory valuation adjustment																	(1,206)	(4,090)	1,243
Operating Expenses																	222,461	13,867	14,042
Selling, General and Administrative Expense																	105,112	2,899	2,615
Depreciation, Depletion and Amortization																	31,894	620	254
Income (loss) from operations																	141,791	73,927	60,575
Income (Loss) from Equity Method Investments																	0	0	0
Goodwill, Impairment Loss																		0
Asset Impairment Charges																	0
Property, Plant and Equipment, Additions																	31,464	5,708	7,685
Assets	1,610,472								465,715								1,610,472	465,715	320,510
HEP
Segment Reporting Information [Line Items]
Sales and other revenues																	77,225	68,927	66,654
Intersegment Revenues																	377,137	333,116	292,221
Revenues																	454,362	402,043	358,875
Refining and Marketing Costs																	0	0	0
Lower of cost or market inventory valuation adjustment																	0	0	0
Operating Expenses																	137,605	123,984	105,554
Selling, General and Administrative Expense																	14,323	12,532	12,556
Depreciation, Depletion and Amortization																	77,660	68,811	61,690
Income (loss) from operations																	224,774	196,716	179,075
Income (Loss) from Equity Method Investments																	12,510	14,213	4,803
Goodwill, Impairment Loss																		0
Asset Impairment Charges																	0
Property, Plant and Equipment, Additions																	44,810	107,595	193,121
Assets	2,191,984								1,920,487								2,191,984	1,920,487	1,802,970
Corporate and Other
Segment Reporting Information [Line Items]
Sales and other revenues																	366	(417)	83
Intersegment Revenues																	(715,527)	(651,000)	(653,432)
Revenues																	(715,161)	(651,417)	(653,349)
Refining and Marketing Costs																	(635,530)	(614,714)	(647,603)
Lower of cost or market inventory valuation adjustment																	0	0	0
Operating Expenses																	(72,507)	(28,736)	148
Selling, General and Administrative Expense																	42,372	17,920	14,396
Depreciation, Depletion and Amortization																	10,949	11,895	11,116
Income (loss) from operations																	(60,445)	(37,782)	(31,406)
Income (Loss) from Equity Method Investments																	0	0	(8,541)
Goodwill, Impairment Loss																		0
Asset Impairment Charges																	0
Property, Plant and Equipment, Additions																	19,452	9,080	14,023
Assets	$ 415,032								$ 1,001,368								$ 415,032	$ 1,001,368	$ (21,335)

[1] For 2017, income from operations reflects long-lived asset impairment charges of $23.2 million in the second quarter.

[2] For 2017, income from operations reflects non-cash lower of cost or market inventory valuation charges of $11.8 million and $84.0 million for the first and second quarters, respectively, and a reduction of $111.1 million and $93.4 million for the third and fourth quarters, respectively.

[3] For 2016, income from operations reflects non-cash goodwill and long-lived asset impairment charges of $309.3 million and $344.8 million , respectively, in the second quarter.

[4] For 2016, income from operations reflects non-cash lower of cost or market inventory valuation reductions of $56.1 million and $138.5 million for the first and second quarters, respectively, and increases of $0.3 million for the third quarter and a reduction of $97.7 million for the fourth quarter.