Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Cash and cash equivalents (HEP: $5,802 and $2,830, respectively)	$ 594,092	$ 567,985
Accounts receivable Product and transportation	504,864	507,040
Materials and supplies (HEP: $1,961 and $1,940, respectively)	116,742us-gaap_OtherInventorySupplies	115,027us-gaap_OtherInventorySupplies
Prepayments and other (HEP: $2,428 and $2,443, respectively)	64,648us-gaap_OtherAssetsCurrent	104,148us-gaap_OtherAssetsCurrent
Property, Plant and Equipment, Gross	5,011,673us-gaap_PropertyPlantAndEquipmentGross	4,852,441us-gaap_PropertyPlantAndEquipmentGross
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	1,230,513	1,181,902
Goodwill	2,331,781us-gaap_Goodwill	2,331,781us-gaap_Goodwill
Intangibles and other	178,769hfc_IntangiblesAndOther	188,169hfc_IntangiblesAndOther
Accounts payable (HEP: $28,491 and $17,881, respectively)	930,909us-gaap_AccountsPayableCurrent	1,108,138us-gaap_AccountsPayableCurrent
Accrued liabilities (HEP: $16,771 and $26,321, respectively)	112,975us-gaap_AccruedLiabilitiesCurrent	106,214us-gaap_AccruedLiabilitiesCurrent
Long-term debt (HEP: $890,742 and $867,579, respectively)	1,077,369us-gaap_LongTermDebtNoncurrent	1,054,890us-gaap_LongTermDebtNoncurrent
Deferred income taxes (HEP: $420 and $367, respectively)	631,030	646,870
Other long-term liabilities (HEP: $52,322 and $47,170, respectively)	181,822us-gaap_OtherLiabilitiesNoncurrent	176,758us-gaap_OtherLiabilitiesNoncurrent
HollyFrontier Stockholders' Equity:
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	320,000,000us-gaap_CommonStockSharesAuthorized	320,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued	255,962,866us-gaap_CommonStockSharesIssued	255,962,866us-gaap_CommonStockSharesIssued
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, shares authorized	5,000,000us-gaap_PreferredStockSharesAuthorized	5,000,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares issued	0us-gaap_PreferredStockSharesIssued	0us-gaap_PreferredStockSharesIssued
Treasury stock, shares	61,260,342us-gaap_TreasuryStockShares	59,876,776us-gaap_TreasuryStockShares
HEP [Member]
Cash and cash equivalents (HEP: $5,802 and $2,830, respectively)	5,802	2,830
Accounts receivable Product and transportation	39,855	40,129
Materials and supplies (HEP: $1,961 and $1,940, respectively)	1,961	1,940
Prepayments and other (HEP: $2,428 and $2,443, respectively)	2,428	2,443
Property, Plant and Equipment, Gross	1,305,065	1,269,161
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	258,078	244,850
Goodwill	288,991	288,991
Intangibles and other	71,995	73,928
Accounts payable (HEP: $28,491 and $17,881, respectively)	28,491	17,881
Accrued liabilities (HEP: $16,771 and $26,321, respectively)	16,771	26,321
Long-term debt (HEP: $890,742 and $867,579, respectively)	890,742	867,579
Deferred income taxes (HEP: $420 and $367, respectively)	420	367
Other long-term liabilities (HEP: $52,322 and $47,170, respectively)	$ 52,322	$ 47,170

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