Consolidated Statements Of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 242,661us-gaap_ProfitLoss	$ 163,962us-gaap_ProfitLoss
Other comprehensive income (loss)
Unrealized gain (loss) on marketable securities	108	12
Reclassification adjustments to net income on sale or maturity of marketable securities	(40)	(1)
Available-for-sale Securities, Change in Net Unrealized Holding Gain (Loss) before Taxes	68	11
Change in fair value of cash flow hedging instruments	(15,428)	92,035
Reclassification adjustments to net income on settlement of cash flow hedging instruments	(4,161)	(5,222)
Amortization of unrealized loss attributable to discontinued cash flow hedges	270	270
Net unrealized gain (loss) on hedging instruments	(19,319)	87,083
Loss on post-retirement healthcare plan	0	(89)
Net change in post-retirement benefit obligation	0	(89)
Other comprehensive income (loss) before income taxes	(19,251)	87,005
Income tax expense (benefit)	(7,275)us-gaap_OtherComprehensiveIncomeLossTax	33,705us-gaap_OtherComprehensiveIncomeLossTax
Other comprehensive income (loss)	(11,976)	53,300
Total comprehensive income	230,685	217,262
Less noncontrolling interest in comprehensive income	15,331	11,959
Comprehensive income attributable to HollyFrontier stockholders	$ 215,354	$ 205,303

Other comprehensive income, amortization of unrealized gain (loss) attributable to discontinued cash flow hedges

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Other Comprehensive Income (Loss), Change in Fair Value of Cash Flow Hedge

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Reclassification adjustments to net income on settlement of cash flow hedging instruments

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This item represents the pretax change in net unrealized holding gain (loss) on available-for-sale securities that has been included in accumulated other comprehensive income, a separate component of shareholders' equity, during the period.

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount before tax, after reclassification adjustments of other comprehensive income (loss).

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Amount before tax of (increase) decrease in the value of the projected benefit obligation related to a change in an actuarial assumption and increase (decrease) in the value of the plan assets resulting from experience different from that assumed, that has not been recognized in net periodic benefit (cost) credit.

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Amount of tax expense (benefit) allocated to other comprehensive income (loss).

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Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount before tax and reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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