Derivative Instruments and Hedging Activities Interest Rate Swaps (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Derivative [Line Items]
Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss)	$ (107,518)	$ 8,808	$ 248,399
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	52,884	16,410	(55,175)
Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net	(1,080)	(900)
Gain (Loss) on Derivative Instruments, Net, Pretax	51,804	15,510	(55,175)
HEP
Derivative [Line Items]
Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss)	(2,104)	1,194	(4,418)
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	2,202	2,092	1,508
Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net		849	5,095
Gain (Loss) on Derivative Instruments, Net, Pretax	98	4,135	2,185
Sales Revenue, Services, Net [Member]
Derivative [Line Items]
Gain (Loss) on Derivative Instruments, Net, Pretax	$ (2,202)	$ (2,941)	$ (6,603)