Debt (Carrying Amounts Of Long-Term Debt) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Total long-term debt	$ 990,236	$ 1,336,238
Holly Corporation [Member]
Debt Instrument [Line Items]
Total long-term debt	191,084	471,565
9.875% Senior Notes Due 2017 [Member]
Debt Instrument [Line Items]
Principal	0	286,812
Unamortized discount	0	(7,468)
Long-term debt carrying amount	0	279,344
6.875% Senior Notes Due 2018 [Member]
Debt Instrument [Line Items]
Principal	150,000	150,000
Unamortized premium	5,489	5,910
Long-term debt carrying amount	155,489	155,910
Holly Financing Obligation [Member]
Debt Instrument [Line Items]
Financing obligation	35,595	36,311
HEP [Member]
Debt Instrument [Line Items]
Total HEP long-term debt	799,152	864,673
Total long-term debt	799,152	864,673
HEP [Member] \| Holly Energy Partners Credit Agreement Member
Debt Instrument [Line Items]
HEP Credit Agreement	355,000	421,000
HEP [Member] \| 8.25% Senior Notes Due 2018 [Member]
Debt Instrument [Line Items]
Principal	150,000	150,000
Unamortized discount	(1,449)	(1,602)
Long-term debt carrying amount	148,551	148,398
HEP [Member] \| 6.5% Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Principal	300,000	300,000
Unamortized discount	(4,399)	(4,725)
Long-term debt carrying amount	$ 295,601	$ 295,275

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date before deducting unamortized discount or premiums (if any). May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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The amount of debt premium that was originally recognized at the issuance of the instrument that has yet to be amortized.

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Amount borrowed under the credit facility as of the balance sheet date.

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Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Carrying value as of the balance sheet date of debt not otherwise defined (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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Carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. Senior note holders are paid off in full before any payments are made to junior note holders.

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