Segment Information (Schedule Of Segment Reporting Information) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012		Dec. 31, 2012
Segment Reporting Information [Line Items]
Sales and other revenues	$ 4,707,789		$ 4,931,738
Depreciation and amortization	71,762		56,102
Income (loss) from operations	549,195		419,564
Capital expenditures	71,964		61,387
Cash, Cash Equivalents, And Investments In Marketable Securities	2,543,136				2,393,401
Assets	10,696,172				10,328,997
Long-term Debt	1,283,245				1,336,238
Refining [Member]
Segment Reporting Information [Line Items]
Sales and other revenues	4,692,426		4,919,737
Depreciation and amortization	57,170		41,721
Income (loss) from operations	542,202		414,943
Capital expenditures	63,632		45,534
Cash, Cash Equivalents, And Investments In Marketable Securities	20				2,101
Assets	6,946,525				6,702,872
Long-term Debt	0				0
Corporate And Other [Member]
Segment Reporting Information [Line Items]
Sales and other revenues	563		156
Depreciation and amortization	1,050		1,193
Income (loss) from operations	(25,972)		(26,975)
Capital expenditures	3,319		1,599
Cash, Cash Equivalents, And Investments In Marketable Securities	2,524,923				2,386,063
Assets	2,671,573				2,531,967
Long-term Debt	487,092				487,472
Consolidations And Eliminations [Member]
Segment Reporting Information [Line Items]
Sales and other revenues	(61,684)		(55,732)
Depreciation and amortization	(207)		(207)
Income (loss) from operations	(509)		(517)
Capital expenditures	0		0
Cash, Cash Equivalents, And Investments In Marketable Securities	0				0
Assets	(350,298)				(332,642)
Long-term Debt	(15,760)				(15,907)
HEP [Member]
Segment Reporting Information [Line Items]
Sales and other revenues	76,484	[1]	67,577	[1]
Depreciation and amortization	13,749	[1]	13,395	[1]
Income (loss) from operations	33,474	[1]	32,113	[1]
Capital expenditures	5,013	[1]	14,254	[1]
Cash, Cash Equivalents, And Investments In Marketable Securities	18,193				5,237
Assets	1,428,372				1,426,800
Long-term Debt	$ 811,913				$ 864,673
UNEV Pipeline [Member]
Segment Reporting Information [Line Items]
Percentage of interest owned in pipeline project	75.00%

[1] HEP acquired our 75% interest in UNEV in July 2012. As a result, we have recast our HEP segment information for the three months ended March 31, 2012 to include the UNEV Pipeline operations as a consolidated subsidiary of HEP. The UNEV Pipeline operations were previously presented under Corporate and Other.