Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net income	$ 802,508	$ 326,328	$ 767,823
Adjustments to reconcile net income to net cash provided by operating activities:
Lower of cost or market inventory valuation adjustment	226,979	397,478	0
Depreciation and amortization	346,151	363,381	303,446
Net loss of equity method investments, inclusive of distributions	8,613	5,257	5,198
(Gain) Loss on Early Extinguishment of Debt Due to Unamortized Premium/Discount	(3,788)	1,489	7,948
Gain on sale of assets	(8,677)	(866)	0
Deferred income taxes	(146,136)	(193,662)	114,404
Equity-based compensation expense	30,367	29,598	35,775
Change in fair value – derivative instruments	38,525	(22,668)	(53,185)
Loss on settlement of retirement benefit obligations, net of contributions	0	0	16,771
(Increase) decrease in current assets:
Accounts receivable	238,392	108,876	(68,832)
Inventories	(33,717)	(78,842)	(15,929)
Income taxes receivable	11,719	94,237	(34,419)
Prepayments and other	13,291	1,486	1,377
Increase (decrease) in current liabilities:
Accounts payable	(406,339)	(217,541)	2,068
Income taxes payable	(11,500)	19,642	0
Accrued liabilities	(6,924)	8,047	(41,229)
Turnaround expenditures	(89,365)	(96,803)	(193,920)
Other, net	(30,473)	13,159	21,878
Net cash provided by operating activities	979,626	758,596	869,174
Cash flows from investing activities:
Additions to properties, plants and equipment	(581,639)	(455,128)	(368,514)
Payments to Acquire Interest in Joint Venture	(55,032)
Proceeds from sale of assets	19,264	16,633	7,802
Acquisition of trucking operations	0	0	(11,301)
Purchases of marketable securities	(509,338)	(1,025,602)	(935,512)
Sales and maturities of marketable securities	839,513	1,276,447	846,143
Other, net	0	5,021	(8,740)
Net cash used for investing activities	(381,748)	(292,322)	(526,735)
Cash flows from financing activities:
Redemption of senior notes	(155,156)	0	(300,973)
Redemption of senior notes - HEP	155,156	156,188
Proceeds from sale of HEP common units	0	0	73,444
Proceeds from common unit offerings – HEP			73,444
Purchase of treasury stock	(742,823)	(158,847)	(225,023)
Dividends	(246,908)	(647,197)	(645,920)
Distributions to noncontrolling interest	(83,268)	(78,202)	(71,201)
Excess tax benefit from equity-based compensation	0	2,040	2,562
Other, net	(12,175)	(7,998)	(8,368)
Net cash used for financing activities	(1,099,330)	(838,392)	(1,160,035)
Cash and cash equivalents:
Increase (decrease) for the period	(501,452)	(372,118)	(817,596)
Beginning of period	567,985	940,103	1,757,699
End of period	66,533	567,985	940,103
Cash paid during the period for:
Interest	46,442	55,716	76,647
Income taxes	586,447	237,907	372,846
HEP
Cash flows from investing activities:
Additions to properties, plants and equipment	(94,516)	(109,693)	(56,613)
Payments to Acquire Interest in Joint Venture	(55,032)	0	0
Cash flows from financing activities:
Borrowings under credit agreement – HEP	973,900	642,300	310,600
Repayments under credit agreement – HEP	(832,900)	(434,300)	(368,600)
Redemption of senior notes - HEP	0	(156,188)	0
Proceeds from common unit offerings – HEP	0	0	$ 73,444
Cash and cash equivalents:
Beginning of period	2,830
End of period	$ 15,013	$ 2,830