Consolidated Statements Of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net income	$ 43,390	$ 242,661
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	87,880	80,012
Lower of cost or market inventory valuation adjustment	(56,121)	(6,546)
Net loss of equity method investments, inclusive of distributions	(265)	8,557
Gain on sale of assets	(23)	(766)
Loss on early extinguishment of debt	8,718	0
Deferred income taxes	46,662	(9,470)
Equity based compensation expense	3,226	7,225
Change in fair value - derivative instruments	3,189	2,223
(Increase) decrease in current assets:
Accounts receivable	(78,936)	63,517
Inventories	7,276	(74,001)
Income taxes receivable	(32,813)	11,719
Prepayments and other	10,586	22,203
Increase (decrease) in current liabilities:
Accounts payable	2,401	(165,839)
Income taxes payable	(10,555)	92,374
Accrued liabilities	8,519	(3,059)
Turnaround expenditures	(36,994)	(29,100)
Other, net	496	5,182
Net cash provided by operating activities	6,636	246,892
Cash flows from investing activities:
Additions to properties, plants and equipment	(131,700)	(120,892)
Proceeds from sale of assets	258	814
Purchases of marketable securities	(4,082)	(118,816)
Sales and maturities of marketable securities	148,204	178,524
Net cash provided by (used for) investing activities	(5,193)	(112,097)
Cash flows from financing activities:
Borrowings under credit agreement	837,000	153,500
Repayments under credit agreement	(784,000)	(130,500)
Net proceeds from Issuance of senior notes	246,690	0
Repayment of financing obligation	(39,500)
Inventory repurchase obligation	693	7,434
Purchase of treasury stock	(133,430)	(55,065)
Dividends	(58,602)	(62,335)
Other, net	(4,075)	(1,250)
Net cash used for financing activities	43,045	(108,688)
Cash and cash equivalents:
Increase (decrease) for the period	44,488	26,107
Beginning of period	66,533	567,985
End of period	111,021	594,092
Cash paid during the period for:
Interest	15,261	14,522
Income taxes	19,166	38,985
HEP [Member]
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	16,029	14,290
Cash flows from investing activities:
Additions to properties, plants and equipment	(17,873)	(51,727)
Cash flows from financing activities:
Borrowings under credit agreement	522,000
Repayment of financing obligation	(39,500)	0
Distributions to noncontrolling interest	(21,731)	$ (20,472)
Cash and cash equivalents:
Beginning of period	15,013
End of period	$ 9,034