Other Comprehensive Income (Loss) Other Comprehensive Income (Loss) Amounts Reclassified to Income Statement (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Available for Sale Securities, Other Comprehensive Income Reclassified to Interest Expense	$ 39	$ 59	$ (14)
Gain on sale of marketable equity securities	0	326	0
Available for Sale Securities, Other Comprehensive Income Reclassified to Interest Expense and Gain on Sale	39	385	(14)
Other Comprehensive Income (Loss), Available-for-sale Securities, Tax	15	150	(5)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	24	235	(9)
Gain (Loss) Recognized in Earnings Due to Settlements	15,510	(55,175)	(166)
Amortization of unrealized loss attributable to discontinued cash flow hedges	(1,749)	(5,095)	(41)
Interest Expense	68,050	104,186	78,323
Gain (Loss) on Derivative Instruments, Net, Pretax	12,569	(61,778)	(5,684)
Gain (Loss) on Sale of Derivatives, Income Tax	5,554	(22,590)	(961)
Derivative, Gain (Loss) on Derivative, Net of Tax	7,015	(39,188)	(4,723)
Gain (Loss) on Sale of Derivative Instruments - Noncontrolling Interest	1,783	3,753	3,214
Gain (Loss) on Sale of Derivatives - After Tax and NC Interests	8,798	(35,435)	(1,509)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax	(37,593)	(51,391)	3,586
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax	(14,534)	(19,991)	1,395
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	(23,059)	(31,400)	2,191
Gain (loss) on post-retirement healthcare plan	4,040	1,952	(158)
Other Comprehensive Income post-retirement Healthcare Reclassified, Tax	1,563	759	(61)
Other Comprehensive Income Post-retirement Healthcare Reclassified, Net of Tax	2,477	1,193	(97)
Other Comprehensive Income (Loss) Retirement Restoration Plan,Tax	(43)	(25)	(39)
Other Comprehensive Income (Loss) Retirement Restoration Plan Gain (Loss) During Period, Net of Tax	(68)	(38)	(60)
Reclassifications from Other Comprehensive Income (Loss) to Income Statement	(11,811)	(35,240)	(3,082)
Revenues (decrease) [Member]
Gain (Loss) Recognized in Earnings Due to Settlements	(20,060)	(98,750)	0
Cost of products sold
Gain (Loss) Recognized in Earnings Due to Settlements	38,949	43,575	0
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax	(3,226)	(226)	(155)
Gain (loss) on post-retirement healthcare plan	646	0	(16)
Operating expenses
Gain (Loss) Recognized in Earnings Due to Settlements	(3,379)		(166)
Amortization of unrealized loss attributable to discontinued cash flow hedges	(3,379)	0	(166)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax	(30,127)	(1,486)	(1,056)
Gain (loss) on post-retirement healthcare plan	2,868	1,913	(125)
General and Administrative Expense [Member]
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax	(4,236)	(244)	(1,091)
Gain (loss) on post-retirement healthcare plan	526	39	(17)
Other Comprehensive Income (Loss) Retirement Restoration Plan	(111)	(63)	(99)
Income Statement Location Before Tax [Domain] [Domain]
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax	(37,589)	(1,956)	(2,302)
Comprehensive Income [Member]
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax	(14,547)	(761)	(895)
Income Statement Location Net of Tax [Domain]
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	(23,042)	(1,195)	(1,407)
HEP
Amortization of unrealized loss attributable to discontinued cash flow hedges	(849)	(5,095)	(41)
Interest Expense	$ (2,941)	$ (6,603)	$ (5,518)