Financial Instruments (Estimated Fair Values Of Debt Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 119,461
Carrying Amount [Member]
Debt Instrument [Line Items]
Derivative Asset, Fair Value, Gross Asset	399,392	437,360
Derivative Liability, Fair Value, Gross Liability	1,179,753	978,894
Fair Value [Member]
Debt Instrument [Line Items]
Derivative Asset, Fair Value, Gross Asset	399,392	437,360
Derivative Liability, Fair Value, Gross Liability	1,239,829
Notes Payable, Fair Value Disclosure		1,040,101
Fair Value [Member] | HEP [Member]
Debt Instrument [Line Items]
Derivative Liability, Fair Value, Gross Liability	2,382	520
Level 1 [Member] | Carrying Amount [Member]
Debt Instrument [Line Items]
Derivative Liability, Fair Value, Gross Liability	0
Level 1 [Member] | Carrying Amount [Member] | Holly Frontier [Member]
Debt Instrument [Line Items]
Derivative Liability, Fair Value, Gross Liability	0	0
Level 1 [Member] | Carrying Amount [Member] | HEP [Member]
Debt Instrument [Line Items]
Derivative Liability, Fair Value, Gross Liability	0	0
Level 1 [Member] | Fair Value [Member]
Debt Instrument [Line Items]
Derivative Asset, Fair Value, Gross Asset	3,683	753
Notes Payable, Fair Value Disclosure		1,252
Level 2 [Member] | Carrying Amount [Member]
Debt Instrument [Line Items]
Notes Payable, Fair Value Disclosure		1,038,849
Level 2 [Member] | Fair Value [Member]
Debt Instrument [Line Items]
Derivative Asset, Fair Value, Gross Asset	276,248	404,991
Derivative Liability, Fair Value, Gross Liability	1,239,829
Level 2 [Member] | Fair Value [Member] | HEP [Member]
Debt Instrument [Line Items]
Derivative Liability, Fair Value, Gross Liability	2,382	520
Level 3 [Member] | Fair Value [Member]
Debt Instrument [Line Items]
Derivative Asset, Fair Value, Gross Asset	119,461	31,616
Equity Securities [Member] | Carrying Amount [Member]
Debt Instrument [Line Items]
Derivative Asset, Fair Value, Gross Asset		753
Equity Securities [Member] | Fair Value [Member]
Debt Instrument [Line Items]
Derivative Asset, Fair Value, Gross Asset		753
Marketable Debt Securities [Member] | Carrying Amount [Member]
Debt Instrument [Line Items]
Derivative Asset, Fair Value, Gross Asset	276,248	260,953
Marketable Debt Securities [Member] | Fair Value [Member]
Debt Instrument [Line Items]
Derivative Asset, Fair Value, Gross Asset	276,248	260,953
Marketable Debt Securities [Member] | Level 2 [Member] | Fair Value [Member]
Debt Instrument [Line Items]
Derivative Asset, Fair Value, Gross Asset	276,248	260,953
Nymex Futures Contracts [Member] | Carrying Amount [Member]
Debt Instrument [Line Items]
Derivative Asset, Fair Value, Gross Asset	3,683
Nymex Futures Contracts [Member] | Fair Value [Member]
Debt Instrument [Line Items]
Derivative Asset, Fair Value, Gross Asset	3,683
Nymex Futures Contracts [Member] | Level 1 [Member]
Debt Instrument [Line Items]
Derivative Asset, Fair Value, Gross Asset	3,683
Nymex Futures Contracts [Member] | Level 2 [Member]
Debt Instrument [Line Items]
Derivative Asset, Fair Value, Gross Asset	0
Nymex Futures Contracts [Member] | Level 3 [Member]
Debt Instrument [Line Items]
Derivative Asset, Fair Value, Gross Asset	0
Commodity Price Swaps [Member] | Carrying Amount [Member]
Debt Instrument [Line Items]
Derivative Asset, Fair Value, Gross Asset	119,461	175,654
Derivative Liability, Fair Value, Gross Liability	89,194	1,252
Commodity Price Swaps [Member] | Fair Value [Member]
Debt Instrument [Line Items]
Derivative Asset, Fair Value, Gross Asset	119,461	175,654
Derivative Liability, Fair Value, Gross Liability	89,194	1,252
Commodity Price Swaps [Member] | Level 1 [Member] | Carrying Amount [Member]
Debt Instrument [Line Items]
Derivative Liability, Fair Value, Gross Liability	0	1,252
Commodity Price Swaps [Member] | Level 2 [Member]
Debt Instrument [Line Items]
Derivative Asset, Fair Value, Gross Asset	0	144,038
Commodity Price Swaps [Member] | Level 2 [Member] | Fair Value [Member]
Debt Instrument [Line Items]
Derivative Liability, Fair Value, Gross Liability	89,194	0
Commodity Price Swaps [Member] | Level 3 [Member] | Fair Value [Member]
Debt Instrument [Line Items]
Derivative Asset, Fair Value, Gross Asset	119,461	31,616
Interest Rate Swap [Member] | Carrying Amount [Member]
Debt Instrument [Line Items]
Derivative Liability, Fair Value, Gross Liability	644,982	651,262
Interest Rate Swap [Member] | Carrying Amount [Member] | HEP [Member]
Debt Instrument [Line Items]
Derivative Liability, Fair Value, Gross Liability	2,382	520
Interest Rate Swap [Member] | Fair Value [Member]
Debt Instrument [Line Items]
Derivative Liability, Fair Value, Gross Liability	686,628	693,979
Interest Rate Swap [Member] | Level 1 [Member] | Carrying Amount [Member]
Debt Instrument [Line Items]
Derivative Liability, Fair Value, Gross Liability	0	0
Interest Rate Swap [Member] | Level 2 [Member] | Fair Value [Member]
Debt Instrument [Line Items]
Derivative Liability, Fair Value, Gross Liability	686,628	693,979
Senior Notes [Member] | Carrying Amount [Member] | HEP [Member]
Debt Instrument [Line Items]
Derivative Liability, Fair Value, Gross Liability	443,195	325,860
Senior Notes [Member] | Fair Value [Member] | HEP [Member]
Debt Instrument [Line Items]
Derivative Liability, Fair Value, Gross Liability	461,625	344,350
Senior Notes [Member] | Level 2 [Member] | Fair Value [Member] | HEP [Member]
Debt Instrument [Line Items]
Derivative Liability, Fair Value, Gross Liability	$ 461,625	$ 344,350