Segment Information (Schedule Of Segment Reporting Information) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Sales and other revenues	$ 2,943,559	$ 3,585,823	$ 3,701,912	$ 3,006,626	$ 4,283,119	$ 5,317,555	$ 5,372,600	$ 4,791,053	$ 13,237,920	$ 19,764,327	$ 20,160,560
Depreciation and amortization									346,151	363,381	303,446
Income (loss) from operations	(56,706)	$ 322,605	$ 589,832	$ 388,622	(354,418)	$ 302,611	$ 296,345	$ 270,996	1,244,353	515,534	1,246,074
Property, Plant and Equipment, Additions									676,155	564,821	425,127
Assets	8,388,299				9,230,047				8,388,299	9,230,047	10,055,763
Refining
Segment Reporting Information [Line Items]
Sales and other revenues									13,171,183	19,706,225	20,105,443
Depreciation and amortization									273,799	293,871	233,182
Income (loss) from operations									1,187,875	491,106	1,237,687
Property, Plant and Equipment, Additions									567,616	435,598	339,356
Assets	6,840,545				6,927,126				6,840,545	6,927,126	7,094,558
HEP
Segment Reporting Information [Line Items]
Sales and other revenues									358,875	332,626	307,053
Depreciation and amortization									61,236	60,548	64,701
Income (loss) from operations									181,778	156,453	133,522
Property, Plant and Equipment, Additions									94,516	109,693	56,613
Assets	1,569,089				1,472,098				1,569,089	1,472,098	1,412,931
Corporate and Other
Segment Reporting Information [Line Items]
Sales and other revenues									663	2,103	1,314
Depreciation and amortization									11,944	9,790	6,391
Income (loss) from operations									(123,004)	(129,874)	(123,030)
Property, Plant and Equipment, Additions									14,023	19,530	29,158
Assets	289,225				1,150,865				289,225	1,150,865	1,881,121
Consolidations and Eliminations
Segment Reporting Information [Line Items]
Sales and other revenues									(292,801)	(276,627)	(253,250)
Depreciation and amortization									(828)	(828)	(828)
Income (loss) from operations									(2,296)	(2,151)	(2,105)
Property, Plant and Equipment, Additions									0	0	0
Assets	$ (310,560)				$ (320,042)				$ (310,560)	$ (320,042)	$ (332,847)