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	Mar. 31, 2014	Dec. 31, 2013
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 96,629	$ 1,670
Derivative designated as cash flow hedging instrument asset - gross liability	(40,044)
Derivative designated as cash flow hedging instrument asset - net asset	56,585	1,670
Derivative Instrument Not Designated as Cash Flow Hedging Instrument Asset - net Asset	14,648	6,972
Derivative designated as Cash Flow Hedging Instrument Liability - Net Liability	11,958	41,696
Derivative Instrument not Designated as Cash Flow Hedging Instrument Asset - Gross Asset	19,093	6,972
Derivative Instrument not Designated as Cash Flow Hedging Instrument Asset - Gross Liability	0	0
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Liability	19,998	65,375
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Asset	(8,040)	(23,679)
Derivative Not Designated as Cash Flow Hedging Instruments Liability - Gross Asset	(9,083)	(12,611)
Derivative Not Designated as Cash Flow Hedging Instruments Liability - Net Liability	7,854	10,724
Derivative Instruments Assets - Net Asset	71,233	8,642
Derivative Instruments Liabilities - Net Liabilities Classified as Current	3,450	26,843
Derivative Instruments Liabilities - Net Liabilities Classified as Noncurrent	16,362	25,577
Derivative Instruments Liabilities Classified as Liabilities	19,812	52,420
Commodity Contract [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	92,912	0
Derivative Instrument Not Designated as Cash Flow Hedging Instrument Liability - Gross Liability	13,487	19,766
Derivative designated as cash flow hedging instrument asset - gross liability	(40,044)	0
Derivative designated as cash flow hedging instrument asset - net asset	52,868	0
Derivative Instrument Not Designated as Cash Flow Hedging Instrument Asset - net Asset	14,648	6,972
Derivative designated as Cash Flow Hedging Instrument Liability - Net Liability	10,281	39,882
Derivative Instrument not Designated as Cash Flow Hedging Instrument Asset - Gross Asset	19,093	6,972
Derivative Instrument not Designated as Cash Flow Hedging Instrument Asset - Gross Liability	(4,445)	0
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Liability	18,321	63,561
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Asset	(8,040)	(23,679)
Derivative Not Designated as Cash Flow Hedging Instruments Liability - Gross Asset	(9,083)	(12,611)
Derivative Not Designated as Cash Flow Hedging Instruments Liability - Net Liability	4,404	7,155
HEP Interest Rate Swap [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	1,628	1,670
Derivative designated as cash flow hedging instrument asset - gross liability	0
Derivative designated as cash flow hedging instrument asset - net asset	1,628	1,670
Derivative designated as Cash Flow Hedging Instrument Liability - Net Liability	1,677	1,814
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Liability	1,677
Derivative Designated as Cash Flow Hedging Instrument Liability - Gross Asset	0
Derivative Financial Instruments, Assets [Member]
Derivative [Line Items]
Derivative designated as cash flow hedging instrument asset - gross liability		0
Derivative Instrument not Designated as Cash Flow Hedging Instrument Asset - Gross Liability	(4,445)	0
Derivative Financial Instruments, Liabilities [Member]
Derivative [Line Items]
Derivative Instrument Not Designated as Cash Flow Hedging Instrument Liability - Gross Liability	16,937	23,335
Nymex Futures Contracts [Member]
Derivative [Line Items]
Derivative Instrument Not Designated as Cash Flow Hedging Instrument Liability - Gross Liability	3,450	3,569
Derivative Instrument Not Designated as Cash Flow Hedging Instrument Asset - net Asset	0	0
Derivative Instrument not Designated as Cash Flow Hedging Instrument Asset - Gross Asset	0	0
Derivative Not Designated as Cash Flow Hedging Instruments Liability - Net Liability	3,450	3,569
Prepayments And Other [Member]
Derivative [Line Items]
Derivative Instruments Assets - Net Asset	68,572	6,972
Other Intangible Assets [Member]
Derivative [Line Items]
Derivative Instruments Assets - Net Asset	2,661	1,670
Forward Contracts [Member]
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset	2,089
Derivative designated as cash flow hedging instrument asset - net asset	$ 2,089