Consolidated Statements Of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Statement of Income and Comprehensive Income [Abstract]
Net income	$ 502,370	$ 201,833	$ 749,390	$ 292,844
Other comprehensive income (loss):
Net unrealized loss on available-for-sale securities	(404)	(459)	(216)	(317)
Net unrealized gain (loss), net of reclassifications from contract settlements on hedging instruments	30,801	271	(124,814)	1,592
Pension curtailment adjustment	7,102	0	7,102	0
Other comprehensive income (loss) before income taxes	37,499	(188)	(117,928)	1,275
Income tax expense (benefit)	14,640	(144)	(46,030)	98
Other comprehensive income (loss)	22,859	(44)	(71,898)	1,177
Total comprehensive income	525,229	201,789	677,492	294,021
Less noncontrolling interest in comprehensive income	8,734	9,776	14,595	16,935
Comprehensive income attributable to HollyFrontier stockholders	$ 516,495	$ 192,013	$ 662,897	$ 277,086