Segment Information (Schedule Of Segment Reporting Information) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Sales and other revenues	$ 2,018,724	$ 3,006,626
Depreciation and amortization	87,880	80,012
Income (loss) from operations	83,598	388,622
Capital expenditures	149,573	172,619
Cash, Cash Equivalents, and Short-term Investments	111,021		$ 210,552
Total assets	8,594,287		8,388,299
Long-term Debt	1,308,168		1,040,040
2911 Petroleum Refining [Member]
Segment Reporting Information [Line Items]
Sales and other revenues	1,999,587	2,989,280
Depreciation and amortization	68,878	63,275
Income (loss) from operations	55,000	373,901
Capital expenditures	129,018	116,467
Cash, Cash Equivalents, and Short-term Investments	13,726		91
Total assets	7,053,257		6,831,235
Long-term Debt	0		0
Corporate And Other [Member]
Segment Reporting Information [Line Items]
Sales and other revenues	110	218
Depreciation and amortization	3,180	2,654
Income (loss) from operations	(26,855)	(28,949)
Capital expenditures	2,682	4,425
Cash, Cash Equivalents, and Short-term Investments	88,261		195,448
Total assets	225,375		289,225
Long-term Debt	246,224		31,288
Consolidation, Eliminations [Member]
Segment Reporting Information [Line Items]
Sales and other revenues	(82,983)	(72,628)
Depreciation and amortization	(207)	(207)
Income (loss) from operations	(614)	(540)
Capital expenditures	0	0
Cash, Cash Equivalents, and Short-term Investments	0		0
Total assets	(291,945)		(310,560)
Long-term Debt	0		0
HEP [Member]
Segment Reporting Information [Line Items]
Sales and other revenues	102,010	89,756
Depreciation and amortization	16,029	14,290
Income (loss) from operations	56,067	44,210
Capital expenditures	17,873	$ 51,727
Cash, Cash Equivalents, and Short-term Investments	9,034		15,013
Total assets	1,607,600		1,578,399
Long-term Debt	$ 1,061,944		$ 1,008,752