Segment Information (Schedule Of Segment Reporting Information) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]
Sales and other revenues	$ 4,791,053	$ 4,707,789
Depreciation and amortization	80,548	71,762
Income (loss) from operations	270,996	549,195
Capital expenditures	124,281	71,964
Cash, Cash Equivalents, And Total Investments In Marketable Securities	1,790,153		1,665,263
Total assets	10,380,558		10,056,739
Long-term Debt	1,023,057		997,519
Refining [Member]
Segment Reporting Information [Line Items]
Sales and other revenues	4,775,080	4,692,426
Depreciation and amortization	63,541	57,170
Income (loss) from operations	251,209	542,202
Capital expenditures	99,943	63,632
Cash, Cash Equivalents, And Total Investments In Marketable Securities	105		1,860
Total assets	7,381,446		7,094,558
Long-term Debt	0		0
Corporate And Other [Member]
Segment Reporting Information [Line Items]
Sales and other revenues	1,115	563
Depreciation and amortization	2,030	1,050
Income (loss) from operations	(25,555)	(25,972)
Capital expenditures	3,734	3,319
Cash, Cash Equivalents, And Total Investments In Marketable Securities	1,785,169		1,657,051
Total assets	1,898,635		1,881,119
Long-term Debt	189,267		189,889
Consolidations And Eliminations [Member]
Segment Reporting Information [Line Items]
Sales and other revenues	(72,154)	(61,684)
Depreciation and amortization	(207)	(207)
Income (loss) from operations	(523)	(509)
Capital expenditures	0	0
Cash, Cash Equivalents, And Total Investments In Marketable Securities	0		0
Total assets	(310,058)		(332,846)
Long-term Debt	0		0
HEP [Member]
Segment Reporting Information [Line Items]
Sales and other revenues	87,012	76,484
Depreciation and amortization	15,184	13,749
Income (loss) from operations	45,865	33,474
Capital expenditures	20,604	5,013
Cash, Cash Equivalents, And Total Investments In Marketable Securities	4,879		6,352
Total assets	1,410,535		1,413,908
Long-term Debt	$ 833,790		$ 807,630
UNEV Pipeline [Member]
Segment Reporting Information [Line Items]
Percentage of interest owned in pipeline project	75.00%