Consolidated Balance Sheets (USD $)	Mar. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents (HEP: $12,402 and $3,269, respectively)	$ 1,659,550,000	$ 1,578,904,000
Marketable securities	241,929,000	211,639,000
Accounts receivable: Product and transportation (HEP: $34,784 and $34,071, respectively)	676,839,000	703,691,000
Crude oil resales	56,308,000	5,166,000
Accounts receivable, total	733,147,000	708,857,000
Inventories: Crude oil and refined products	1,288,591,000	1,052,084,000
Materials and supplies (HEP: $1,483 and $1,483, respectively)	56,564,000	62,535,000
Inventories, total	1,345,155,000	1,114,619,000
Income taxes receivable	93,648,000	87,277,000
Prepayments and other (HEP: $920 and $1,161, respectively)	54,172,000	219,450,000
Total current assets	4,127,601,000	3,920,746,000
Properties, plants and equipment, at cost (HEP: $686,131 and $679,852, respectively)	3,693,550,000	3,631,787,000
Less accumulated depreciation (HEP: $(98,900) and $(89,609), respectively)	(622,337,000)	(578,882,000)
Property, plant and equipment, net	3,071,213,000	3,052,905,000
Marketable securities (long-term)	26,057,000	50,067,000
Other assets: Turnaround costs	64,175,000	57,060,000
Goodwill (HEP: $288,991 and $288,991, respectively)	2,334,530,000	2,336,510,000
Intangibles and other (HEP: $75,597 and $75,902, respectively)	162,174,000	158,955,000
Other assets, total	2,560,879,000	2,552,525,000
Total assets	9,785,750,000	9,576,243,000
Current liabilities:
Accounts payable (HEP: $12,593 and $11,406, respectively)	1,641,107,000	1,504,694,000
Income taxes payable	152,212,000	40,366,000
Accrued liabilities (HEP: $8,942 and $16,285, respectively)	126,380,000	169,940,000
Deferred income tax liabilities	172,401,000	175,683,000
Current portion of long-term debt (HEP: $26,281)	26,281,000	0
Total current liabilities	2,118,381,000	1,890,683,000
Long-term debt (HEP: $597,956 and $598,761, respectively)	1,285,761,000	1,214,742,000
Deferred income taxes	400,993,000	463,721,000
Other long-term liabilities (HEP: $4,636 and $4,000, respectively)	191,036,000	171,197,000
HollyFrontier stockholders' equity:
Preferred stock, $1.00 par value - 5,000,000 shares authorized; none issued	0	0
Common stock $.01 par value - 320,000,000 shares authorized; 255,962,866 shares issued as of March 31, 2012 and December 31, 2011	2,560,000	2,563,000
Additional capital	3,857,601,000	3,859,367,000
Retained earnings	2,080,848,000	1,964,656,000
Accumulated other comprehensive income (loss)	(17,421,000)	77,873,000
Common stock held in treasury, at cost - 48,140,292 and 46,630,220 shares as of March 31, 2012 and December 31, 2011, respectively	(759,275,000)	(700,449,000)
Total HollyFrontier stockholders' equity	5,164,313,000	5,204,010,000
Noncontrolling interest	625,266,000	631,890,000
Total equity	5,789,579,000	5,835,900,000
Total liabilities and equity	9,785,750,000	9,576,243,000
HEP [Member]
Current assets:
Cash and cash equivalents (HEP: $12,402 and $3,269, respectively)	12,402,000	3,269,000
Accounts receivable: Product and transportation (HEP: $34,784 and $34,071, respectively)	34,784,000	34,071,000
Materials and supplies (HEP: $1,483 and $1,483, respectively)	1,483,000	1,483,000
Prepayments and other (HEP: $920 and $1,161, respectively)	920,000	1,161,000
Properties, plants and equipment, at cost (HEP: $686,131 and $679,852, respectively)	686,131,000	679,852,000
Less accumulated depreciation (HEP: $(98,900) and $(89,609), respectively)	(98,900,000)	(89,609,000)
Goodwill (HEP: $288,991 and $288,991, respectively)	288,991,000	288,991,000
Intangibles and other (HEP: $75,597 and $75,902, respectively)	75,597,000	75,902,000
Total assets	998,400,000	992,408,000
Current liabilities:
Accounts payable (HEP: $12,593 and $11,406, respectively)	12,593,000	11,406,000
Accrued liabilities (HEP: $8,942 and $16,285, respectively)	8,942,000	16,285,000
Current portion of long-term debt (HEP: $26,281)	26,281,000	0
Long-term debt (HEP: $597,956 and $598,761, respectively)	597,956,000	598,761,000
Other long-term liabilities (HEP: $4,636 and $4,000, respectively)	$ 4,636,000	$ 4,000,000