Derivative Instruments And Hedging Activities (Summary Of Balance Sheet Locations And Related Fair Values Of Outstanding Derivative Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 106,514	$ 1,670
Derivative designated as cash flow hedging instrument asset - gross liability	(31,480)
Derivative designated as cash flow hedging instrument asset - net asset	75,034	1,670
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Liability	13,966	65,375
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Asset	(5,456)	(23,679)
Derivative designated as Cash Flow Hedging Instrument Liability - Net Liability	8,510	41,696
Derivative Instrument not Designated as Cash Flow Hedging Instrument Asset - Gross Asset	16,173	6,972
Derivative Instrument not Designated as Cash Flow Hedging Instrument Asset - Gross Liability	(3,961)
Derivative Instrument Not Designated as Cash Flow Hedging Instrument Asset - net Asset	12,212	6,972
Derivative Instrument Not Designated as Cash Flow Hedging Instrument Liability - Gross Liability	11,624	23,335
Derivative Not Designated as Cash Flow Hedging Instruments Liability - Gross Asset	(7,860)	(12,611)
Derivative Not Designated as Cash Flow Hedging Instruments Liability - Net Liability	3,764	10,724
Derivative Instruments Assets - Net Asset	87,246	8,642
Derivative Instruments Liabilities - Net Liabilities Classified as Current		26,843
Derivative Instruments Liabilities - Net Liabilities Classified as Noncurrent	12,274	25,577
Derivative Instruments Liabilities Classified as Liabilities	12,274	52,420
Commodity Contract [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	104,969
Derivative designated as cash flow hedging instrument asset - gross liability	(31,480)
Derivative designated as cash flow hedging instrument asset - net asset	73,489
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Liability	12,735	63,561
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Asset	(5,456)	(23,679)
Derivative designated as Cash Flow Hedging Instrument Liability - Net Liability	7,279	39,882
Derivative Instrument not Designated as Cash Flow Hedging Instrument Asset - Gross Asset	14,325	6,972
Derivative Instrument not Designated as Cash Flow Hedging Instrument Asset - Gross Liability	(3,961)
Derivative Instrument Not Designated as Cash Flow Hedging Instrument Asset - net Asset	10,364	6,972
Derivative Instrument Not Designated as Cash Flow Hedging Instrument Liability - Gross Liability	11,624	19,766
Derivative Not Designated as Cash Flow Hedging Instruments Liability - Gross Asset	(7,860)	(12,611)
Derivative Not Designated as Cash Flow Hedging Instruments Liability - Net Liability	3,764	7,155
HEP Interest Rate Swap [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	1,545	1,670
Derivative designated as cash flow hedging instrument asset - gross liability	0
Derivative designated as cash flow hedging instrument asset - net asset	1,545	1,670
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Liability	1,231	1,814
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Asset	0
Derivative designated as Cash Flow Hedging Instrument Liability - Net Liability	1,231	1,814
Nymex Futures Contracts [Member]
Derivative [Line Items]
Derivative Instrument not Designated as Cash Flow Hedging Instrument Asset - Gross Asset	1,848
Derivative Instrument Not Designated as Cash Flow Hedging Instrument Asset - net Asset	1,848
Derivative Instrument Not Designated as Cash Flow Hedging Instrument Liability - Gross Liability	0	3,569
Derivative Not Designated as Cash Flow Hedging Instruments Liability - Net Liability	0	3,569
Prepayments And Other [Member]
Derivative [Line Items]
Derivative Instruments Assets - Net Asset	84,559	6,972
Other Intangible Assets [Member]
Derivative [Line Items]
Derivative Instruments Assets - Net Asset	$ 2,687	$ 1,670