Delek US 10-Q 8 May 14 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information Document	3 Months Ended
	Mar. 31, 2014	5-May-14
Entity Information [Line Items]	'	'
Entity Registrant Name	'Delek US Holdings, Inc.	'
Entity Central Index Key	'0001351541	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Document Type	'10-Q	'
Document Period End Date	31-Mar-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'
Amendment Flag	'false	'
Entity Common Stock, Shares Outstanding	'	60,350,444
Entity Well-known Seasoned Issuer	'No	'
Entity Voluntary Filers	'No	'
Entity Current Reporting Status	'Yes	'

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (Unaudited) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$392.90	$400
Accounts receivable	297.1	250.5
Inventory	589.3	672.3
Other current assets	76.7	87.7
Total current assets	1,356	1,410.50
Property, plant and equipment:	'	'
Property, plant and equipment	1,807.70	1,683.70
Less: accumulated depreciation	-428.2	-405.2
Property, plant and equipment, net	1,379.50	1,278.50
Goodwill	72.7	72.7
Other intangibles, net	13	13.3
Other non-current assets	114.8	59.4
Total assets	2,936	2,834.40
Current liabilities:	'	'
Accounts payable	564.2	602
Current portion of long-term debt and capital lease obligations	36	33.7
Obligation under Supply and Offtake Agreement	337.8	331
Accrued expenses and other current liabilities	123.8	114.1
Total current liabilities	1,061.80	1,080.80
Non-current liabilities:	'	'
Long-term debt and capital lease obligations, net of current portion	454	376.6
Environmental liabilities, net of current portion	8.9	9.2
Asset retirement obligations	8.6	8.5
Deferred tax liabilities	226.5	220
Other non-current liabilities	19.2	18.9
Total non-current liabilities	717.2	633.2
Shareholders' equity:	'	'
Preferred stock, $0.01 par value, 10,000,000 shares authorized, no shares issued and outstanding	0	0
Common stock, $0.01 par value, 110,000,000 shares authorized, 60,309,289 shares and 60,229,107 shares issued at March 31, 2014 and December 31, 2013, respectively	0.6	0.6
Additional paid-in capital	384.6	384.5
Accumulated other comprehensive income	11.7	-4
Treasury stock, 1,000,000 shares, at cost	-37.9	-37.9
Retained earnings	610.6	591.8
Non-controlling interest in subsidiaries	187.4	185.4
Total stockholders’ equity	1,157	1,120.40
Total liabilities and stockholders’ equity	$2,936	$2,834.40

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Unaudited) Parenthetical (USD $)	Mar. 31, 2014	Dec. 31, 2013
Condensed Consolidated Balance Sheets Parenthetical [Abstract]	'	'
Preferred stock, par value	$0.01	$0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	110,000,000	110,000,000
Common stock, shares issued	60,309,289	60,229,107
Treasury Stock, Shares, at cost	1,000,000	1,000,000

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Income (Unaudited) (USD $)	3 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Income Statement [Abstract]	'	'
Net sales	$1,865.70	$2,259.90
Operating costs and expenses:	'	'
Cost of goods sold	1,640.40	1,972.20
Operating expenses	98.5	98.7
General and administrative expenses	34.5	32.6
Depreciation and amortization	24.6	22
Total operating costs and expenses	1,798	2,125.50
Operating income	67.7	134.4
Interest expense	9.6	9.2
Interest income	-0.4	-0.1
Other income, net	-0.1	0
Total non-operating expenses, net	9.1	9.1
Income from continuing operations before income taxes	58.6	125.3
Income tax expense	19.3	43.2
Net income	39.3	82.1
Net income attributed to non-controlling interest	5.6	4.6
Net income attributable to Delek	$33.70	$77.50
Basic earnings per share	$0.57	$1.30
Diluted earnings per share	$0.56	$1.28
Weighted average common shares outstanding:	'	'
Basic	59,248,855	59,571,744
Diluted	59,878,013	60,645,717
Dividends declared per common share outstanding	$0.25	$0.20

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Condensed Consolidated Statements of Comprehensive Income [Abstract]	'	'
Net income attributable to Delek	$33.70	$77.50
Net gain (loss) on derivative instruments, net of tax (expense) benefit of $(9.0) million and $0.2 million for the three months ended March 31, 2014 and 2013, respectively, and net of ineffectiveness of $3.1 million and zero for the three months ended March 31, 2014 and 2013, respectively.	15.7	-0.4
Comprehensive income attributable to Delek	$49.40	$77.10

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Comprehensive Income (Unaudited) Parenthetical (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Net gain (loss) on derivative instruments, net of tax (expense) benefit of	($9)	$0.20
Net gain (loss) on derivative instruments, net of ineffectiveness of	$3.10	$0

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Cash Flows ( Unaudited) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:	'	'
Net income	$39.30	$82.10
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization	24.6	22
Amortization of deferred financing costs	1.3	1.4
Accretion of asset retirement obligations	0.1	0.2
Amortization of unfavorable contract liability	-0.7	0
Deferred income taxes	2.6	6.4
Equity-based compensation expense	3.1	2
Income tax benefit of equity-based compensation	-0.5	-2.6
Changes in assets and liabilities, net of acquisitions:	'	'
Accounts receivable, net	-46.6	-73.2
Inventories and other current assets	89.5	-19.8
Accounts payable and other current liabilities	-3.4	105
Obligation under Supply and Offtake Agreement, net	6.8	-36.4
Non-current assets and liabilities, net	-52.4	-5.6
Net cash provided by operating activities	63.7	81.5
Cash flows from investing activities:	'	'
Business combinations	-11.1	-6.6
Purchases of property, plant and equipment	-114.3	-28
Net cash used in investing activities	-125.4	-34.6
Cash flows from financing activities:	'	'
Proceeds from long-term revolvers	421.9	82.2
Payments on long-term revolvers	-342.7	-88.7
Proceeds from term debt	2.7	3.5
Payments on term debt and capital lease obligations	-2.2	-8.5
Proceeds from exercise of stock options	0.1	0.5
Taxes paid due to the net settlement of equity-based compensation	-3.3	-1.2
Income tax benefit of equity-based compensation	0.5	2.6
Repurchase of common stock	0	-37.9
Distribution to non-controlling interest	-3.9	-2
Dividends paid	-14.9	-5.9
Deferred financing costs paid	-3.6	-0.3
Net cash provided by (used in) financing activities	54.6	-55.7
Net decrease in cash and cash equivalents	-7.1	-8.8
Cash and cash equivalents at the beginning of the period	400	601.7
Cash and cash equivalents at the end of the period	392.9	592.9
Cash paid during the period for:	'	'
Interest, net of capitalized interest of $0.3 million and $0.1 million in the 2014 and 2013 periods, respectively.	8.4	7.7
Income taxes	$7.10	$1

Condensed_Consolidated_Stateme4

Condensed Consolidated Statements of Cash Flows (Unaudited) Parentheticals (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Interest paid, net of capitalized interest of	$0.30	$0.10

Organization_and_Basis_of_Pres

Organization and Basis of Presentation (Notes)	3 Months Ended
	Mar. 31, 2014
Organization and Basis of Presentation [Abstract]	'
Organization and Basis of Presentation	'
	Organization and Basis of Presentation
	Delek US Holdings, Inc. is the sole shareholder or owner of membership interests of Delek Refining, Inc. ("Refining"), Delek Finance, Inc., Delek Marketing & Supply, LLC ("Marketing"), Lion Oil Company ("Lion Oil"), Delek Renewables, LLC, Delek Rail Logistics, Inc., Delek Logistics Services Company, MAPCO Express, Inc. ("MAPCO Express"), MAPCO Fleet, Inc., NTI Investments, LLC, GDK Bearpaw, LLC, Delek Helena, LLC, Commerce Way Insurance Company, Inc. and Delek Land Holdings, LLC. Unless otherwise indicated or the context requires otherwise, the terms "we," "our," "us," "Delek" and "Company" are used in this report to refer to Delek US Holdings, Inc. and its consolidated subsidiaries.
	Our condensed consolidated financial statements include Delek Logistics Partners, LP ("Delek Logistics"), a variable interest entity. Because our consolidated subsidiary, Delek Logistics GP, LLC ("Logistics GP"), is the general partner of Delek Logistics, we have the ability to direct the activities of Delek Logistics that most significantly impact its economic performance. We are also considered to be the primary beneficiary for accounting purposes and are Delek Logistics' primary customer. Delek Logistics does not derive an amount of gross margin material to us from third parties. However, in the event that Delek Logistics incurs a loss, our operating results will reflect Delek Logistics' loss, net of intercompany eliminations, to the extent of our ownership interest in Delek Logistics.
	Delek is listed on the New York Stock Exchange under the symbol "DK". As of March 31, 2014, approximately 25.4% of our outstanding shares of common stock were beneficially owned by Delek Group Ltd. ("Delek Group") located in Natanya, Israel. As a result, Delek Group and its controlling stockholder, Mr. Itshak Sharon (Tshuva), may influence the election of our directors, our corporate and management policies (including the declaration of dividends) and the outcome of any corporate transaction or other matter submitted to our stockholders for approval, including potential mergers or acquisitions, asset sales and other significant corporate transactions, for so long as they control a significant percentage of our voting power.
	The condensed consolidated financial statements include the accounts of Delek and its consolidated subsidiaries. Certain information and footnote disclosures normally included in annual financial statements prepared in accordance with U.S. generally accepted accounting principles ("GAAP") have been condensed or omitted, although management believes that the disclosures herein are adequate to make the financial information presented not misleading. Our unaudited condensed consolidated financial statements have been prepared in conformity with GAAP applied on a consistent basis with those of the annual audited financial statements included in our Annual Report on Form 10-K filed with the Securities and Exchange Commission ("SEC") on March 3, 2014 ("Annual Report on Form 10-K") and in accordance with the rules and regulations of the SEC. These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto for the year ended December 31, 2013 included in our Annual Report on Form 10-K.
	In the opinion of management, all adjustments necessary for a fair presentation of the financial position and the results of operations for the interim periods have been included. All significant intercompany transactions and account balances have been eliminated in consolidation. All adjustments are of a normal, recurring nature. Operating results for the interim period should not be viewed as representative of results that may be expected for any future interim period or for the full year.
	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
	New Accounting Pronouncements
	On January 1, 2014 we adopted guidance issued by the Financial Accounting Standards Board regarding "Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists" to eliminate diversity in practice. This guidance requires that companies net their unrecognized tax benefits against all same-jurisdiction net operating losses or tax credit carryforwards that would be used to settle the position with a tax authority. The adoption of this guidance did not materially affect our business, financial position or results of operations.

Delek_Logistics_Partners_LP_No

Delek Logistics Partners, LP (Notes)	3 Months Ended
	Mar. 31, 2014
Variable Interest Entity, Measure of Activity [Abstract]	'
Delek Logistics Partners, LP	'
	Delek Logistics Partners, LP
	On November 7, 2012, Delek Logistics, then a wholly owned indirect subsidiary of Delek, closed its initial public offering (the "DKL Offering") of 9,200,000 common units. Headquartered in Brentwood, Tennessee, Delek Logistics was formed by Delek to own, operate, acquire and construct crude oil and refined products logistics and marketing assets. Delek Logistics' initial assets were contributed by us in connection with the DKL Offering and included certain assets formerly owned or used by our subsidiaries, including Marketing, Lion Oil and Paline Pipeline Company, LLC ("Paline"). A substantial majority of Delek Logistics' assets are currently integral to Delek’s refining and marketing operations.
	In July 2013, Delek Logistics completed the acquisition of a terminal, storage tanks and related assets adjacent to our refinery in Tyler, Texas (the "Tyler refinery") from one of our subsidiaries (the "Tyler Acquisition"). The cash paid for the assets acquired was approximately $94.8 million, financed with a combination of proceeds from the amended Delek Logistics revolving credit agreement and cash on hand.
	In February 2014, a subsidiary of Delek Logistics completed the acquisition of certain storage tanks and the products terminal located at our refinery in El Dorado, Arkansas (the "El Dorado refinery") from Lion Oil (the "El Dorado Acquisition"). The cash paid for the assets acquired was approximately $95.9 million, financed with borrowings under the amended and restated Delek Logistics revolving credit agreement. The storage tanks have approximately 2.5 million barrels of aggregate shell capacity and consist of 158 tanks and ancillary assets, including piping and pumps.
	The Tyler Acquisition and the El Dorado Acquisition are both considered a transfer of a business between entities under common control. As such, the assets acquired and liabilities assumed were transferred to Delek Logistics at historical basis instead of fair value.
	As of March 31, 2014, we owned a 60.0% limited partner interest in Delek Logistics, a 96.6% interest in Logistics GP, which owns the 2.0% general partner interest in Delek Logistics and all of the incentive distribution rights. Delek's partnership interest in Delek Logistics includes 2,799,258 common units, 11,999,258 subordinated units and 492,893 general partner units.
	We have agreements with Delek Logistics that, among other things, establish fees for certain administrative and operational services provided by us and our subsidiaries to Delek Logistics, provide certain indemnification obligations and establish terms for fee-based commercial logistics and marketing services provided by Delek Logistics and its subsidiaries to us.
	With the exception of affiliate balances which are eliminated in consolidation, the Delek Logistics condensed consolidated balance sheets as of March 31, 2014 and December 31, 2013, as presented below, are included in the consolidated balance sheets of Delek.
		March 31,			December 31, 2013(1)
		2014
		(In millions)
		(Unaudited)
	ASSETS
	Cash and cash equivalents	$	4.1		$	0.9
	Accounts receivable	31.5			29
	Accounts receivable from related parties	0.7			—
	Inventory	14			17.5
	Other current assets	0.2			0.3
	Net property, plant and equipment	223.6			225.8
	Goodwill	10.5			10.5
	Intangible assets, net	12			12.3
	Other non-current assets	4.7			5
	Total assets	$	301.3		$	301.3
	LIABILITIES AND EQUITY
	Accounts payable	$	24.6		$	26
	Accounts payable to related parties	—			1.5
	Accrued expenses and other current liabilities	11.2			12.2
	Revolving credit facility	260.5			164.8
	Asset retirement obligations	3.1			3.1
	Deferred tax liabilities	0.3			0.3
	Other non-current liabilities	5.7			6.2
	Equity	(4.1		)	87.2
	Total liabilities and equity	$	301.3		$	301.3
	(1)These amounts have been restated to reflect the assets and liabilities acquired in the El Dorado Acquisition.

Acquisitions_Notes

Acquisitions (Notes)	3 Months Ended
	Mar. 31, 2014
Acquisitions [Abstract]	'
Acquisitions	'
	Acquisitions
	Crossett Biodiesel Facility Acquisition
	On January 2, 2014, we purchased a biodiesel plant in Crossett, Arkansas (the "Crossett Facility") from Pinnacle Biofuels, Inc. for approximately $11.1 million, which has been preliminarily allocated to property, plant and equipment.  The property, plant and equipment valuation is subject to change during the purchase price allocation period. The Crossett Facility has a production capacity of approximately 10.0 million gallons per year. The Crossett Facility produced biodiesel exclusively for Delek under a tolling agreement prior to this acquisition.

Inventory_Notes

Inventory (Notes)	3 Months Ended
	Mar. 31, 2014
Inventory [Abstract]	'
Inventory	'
	Inventory
	Refinery inventory consists of crude oil, in-process, refined products and blendstocks which are stated at the lower of cost or market. Cost of inventory for the Tyler refinery is determined under the last-in, first-out ("LIFO") valuation method. Cost of crude oil, in-process, refined product and feedstock inventories in excess of market value is charged to cost of goods sold. Cost of inventory for the operations of Lion Oil is determined on a first-in, first-out ("FIFO") basis.
	Logistics inventory consists of refined products which are stated at the lower of cost or market on a FIFO basis.
	Retail inventory consists of gasoline, diesel fuel, other petroleum products, cigarettes, beer, convenience merchandise and food service merchandise. Fuel inventories are stated at the lower of cost or market on a FIFO basis. Non-fuel inventories are stated at estimated cost as determined by the retail inventory method.
	Carrying value of inventories consisted of the following (in millions):
		March 31,		December 31,
		2014		2013
	Refinery raw materials and supplies	$	277.3	$	250.9
	Refinery work in process	67.9		58.6
	Refinery finished goods	187.3		299.2
	Retail fuel	16.1		19.2
	Retail merchandise	26.7		26.9
	Logistics refined products	14		17.5
	Total inventories	$	589.3	$	672.3
	At March 31, 2014 and December 31, 2013, the excess of replacement cost (FIFO) over the carrying value (LIFO) of the Tyler refinery inventories was $47.5 million and $51.5 million, respectively.
	Permanent Liquidations
	During the three months ended March 31, 2014, we incurred a permanent reduction in a LIFO layer resulting in a liquidation gain in our refinery inventory of $4.1 million. These liquidations were recognized as a component of cost of goods sold in the three months ended March 31, 2014.
	During the three months ended March 31, 2013, we incurred a permanent reduction in a LIFO layer resulting in a liquidation loss in our refinery finished goods inventory of a nominal amount. These liquidations were recognized as a component of cost of goods sold in the three months ended March 31, 2013.

Crude_Oil_Supply_and_Inventory

Crude Oil Supply and Inventory Purchase Agreement (Notes)	3 Months Ended
	Mar. 31, 2014
Crude Oil Supply and Inventory Purchase Agreement [Abstract]	'
Crude Oil Supply and Inventory Purchase Agreement	'
	Crude Oil Supply and Inventory Purchase Agreement
	Delek has a Master Supply and Offtake Agreement (the "Supply and Offtake Agreement") with J. Aron & Company ("J. Aron"). Throughout the term of the Supply and Offtake Agreement, which was amended on December 23, 2013 to expire on April 30, 2017, Lion Oil and J. Aron will identify mutually acceptable contracts for the purchase of crude oil from third parties and J. Aron will supply up to 100,000 barrels per day ("bpd") of crude to the El Dorado refinery. Crude oil supplied to the El Dorado refinery by J. Aron will be purchased daily at an estimated average monthly market price by Lion Oil. J. Aron will also purchase all refined products from the El Dorado refinery at an estimated market price daily, as they are produced. These daily purchases and sales are trued-up on a monthly basis in order to reflect actual average monthly prices. We have recorded a receivable related to this settlement of $10.0 million and $18.2 million as of March 31, 2014 and December 31, 2013, respectively, which is included in other current assets on the condensed consolidated balance sheet. Also pursuant to the Supply and Offtake Agreement and other related agreements, Lion Oil will endeavor to arrange potential sales by either Lion Oil or J. Aron to third parties of the products produced at the El Dorado refinery or purchased from third-parties. In instances where Lion Oil is the seller to such third parties, J. Aron will first transfer the applicable products to Lion Oil.
	Upon any termination of the Supply and Offtake Agreement, including in connection with a force majeure event, the parties are required to negotiate with third parties for the assignment to us of certain contracts, commitments and arrangements, including procurement contracts, commitments for the sale of product, and pipeline, terminalling, storage and shipping arrangements. While title of the inventories will reside with J. Aron, this arrangement will be accounted for as a financing. Delek incurred fees of $2.4 million and $2.1 million during the three month periods ended March 31, 2014 and 2013, respectively, which are included as a component of interest expense in the condensed consolidated statements of income.
	Upon the expiration of the Supply and Offtake Agreement on April 30, 2017 or upon any earlier termination, Delek will be required to repurchase the consigned crude oil and refined products from J. Aron at then prevailing market prices. At March 31, 2014, Delek had 3.6 million barrels of inventory consigned for J. Aron and we have recorded liabilities associated with this consigned inventory of $339.5 million in the condensed consolidated balance sheet.
	Each month, J. Aron sets target inventory levels for each product subject to pre-agreed minimum and maximum inventory levels for each product group. At March 31, 2014 and December 31, 2013, we recorded a current receivable (payable) of $1.7 million and $(4.6) million, respectively, for forward commitments related to the month end actual consignment inventory levels differing from the month end consignment inventory target levels and the associated pricing with these inventory level differences. This amount is included with the consigned inventory liability and reflected in the Obligation under the Supply and Offtake Agreement in the condensed consolidated balance sheets.

LongTerm_Obligations_and_Notes

Long-Term Obligations and Notes Payable (Notes)	3 Months Ended
	Mar. 31, 2014
Long-Term Obligations and Notes Payable [Abstract]	'
Long-Term Obligations and Notes Payable	'
	Long-Term Obligations and Notes Payable
	Outstanding borrowings under Delek’s existing debt instruments and capital lease obligations are as follows (in millions):
		March 31,		December 31,
		2014		2013
	MAPCO Revolver	$	51	$	67.5
	DKL Revolver	260.5		164.8
	Reliant Bank Revolver	10		10
	Promissory notes	78		77.4
	Term Loan Facility	90		90
	Capital lease obligations	0.5		0.6
		490		410.3
	Less: Current portion of long-term debt, notes payable and capital lease obligations	36		33.7
		$	454	$	376.6
	MAPCO Revolver
	On December 23, 2010, our subsidiary, MAPCO Express, executed a $200.0 million revolving credit facility ("MAPCO Revolver") that includes (i) a $200.0 million revolving credit limit; (ii) a $10.0 million swing line loan sub-limit; (iii) a $50.0 million letter of credit sub-limit; and (iv) an accordion feature which permits an increase in borrowings of up to $275.0 million, subject to additional lender commitments. The MAPCO Revolver extended and increased the $108.0 million revolver and terminated the $165.0 million term loan outstanding under our Second Amended and Restated Credit Agreement among MAPCO Express, Fifth Third Bank as Administrative Agent and the lenders party thereto, as amended. As of March 31, 2014, we had $51.0 million outstanding under the MAPCO Revolver, as well as letters of credit issued of $2.6 million. Borrowings under the MAPCO Revolver are secured by substantially all the assets of MAPCO Express and its subsidiaries. The MAPCO Revolver will mature on December 23, 2015. The MAPCO Revolver bears interest based on predetermined pricing grids which allow us to choose between base rate loans or London Interbank Offered Rate ("LIBOR") rate loans. At March 31, 2014, the weighted average borrowing rate was approximately 3.7%. Additionally, the MAPCO Revolver requires us to pay a leverage ratio dependent quarterly fee on the average unused revolving commitment. As of March 31, 2014, this fee was 0.50% per year. Amounts available under the MAPCO Revolver, as of March 31, 2014, were approximately $146.4 million. The MAPCO Revolver was subsequently refinanced on May 6, 2014. See Note 15 for further information.
	Wells ABL
	We have an asset-based loan revolving credit facility ("Wells ABL") that consists of (i) a $600 million revolving loan (the "Wells Revolving Loan"), which includes a $55.0 million swing line loan sub-limit and a $550.0 million letter of credit sublimit, (ii) a $70.0 million delayed single draw term loan (the "Wells Term Loan") and (iii) an accordion feature which permits an increase in revolving credit commitments of up to $875.0 million subject to additional lender commitments. The Wells Revolving Loan matures on January 16, 2019 and the Wells Term Loan expires if undrawn on June 1, 2014. If drawn, the Wells Term Loan is subject to repayment in level principal installments of approximately $5.8 million per quarter beginning December 31, 2014, with a final balloon payment due on December 31, 2016. As of March 31, 2014, we had letters of credit issued under the facility totaling approximately $154.3 million and no amounts outstanding under the Wells ABL. Borrowings under the Wells ABL are secured by substantially all the assets of Refining and its subsidiaries, with certain limitations. Under the facility, revolving loans and letters of credit are provided subject to availability requirements which are determined pursuant to a borrowing base calculation as defined in the credit agreement. The borrowing base as calculated is primarily supported by cash, certain accounts receivable and certain inventory. Borrowings under the facility bear interest based on predetermined pricing grids which allow us to choose between base rate loans or LIBOR rate loans. At March 31, 2014, the weighted average borrowing rate was approximately 4.50%. Additionally, the Wells ABL requires us to pay a quarterly credit utilization fee. As of March 31, 2014, this fee was approximately 0.38% per year. Borrowing capacity, as calculated and reported under the terms of the Wells ABL credit facility, as of March 31, 2014, was $199.5 million.
	DKL Revolver
	Delek Logistics has a $400.0 million Senior Secured Revolving Credit Agreement with Fifth Third Bank, as administrative agent, and a syndicate of lenders (the "DKL Revolver"). Delek Logistics and each of its existing subsidiaries are borrowers under the DKL Revolver. The DKL Revolver contains a dual currency borrowing tranche that permits draw downs in U.S. or Canadian dollars and an accordion feature whereby Delek Logistics can increase the size of the credit facility to an aggregate of $450.0 million, subject to receiving increased or new commitments from lenders and the satisfaction of certain other conditions precedent.
	The obligations under the DKL Revolver are secured by a first priority lien on substantially all of Delek Logistics' tangible and intangible assets. Additionally, a subsidiary of Delek provides a limited guaranty of Delek Logistics' obligations under the DKL Revolver. The guaranty is (i) limited to an amount equal to the principal amount, plus unpaid and accrued interest, of a promissory note made by Delek in favor of the subsidiary guarantor (the "Holdings Note") and (ii) secured by the subsidiary guarantor's pledge of the Holdings Note to the DKL Revolver lenders. As of March 31, 2014, the principal amount of the Holdings Note was $102.0 million.
	The DKL Revolver will mature on November 7, 2017. Borrowings under the DKL Revolver bear interest at either a U.S. base rate, Canadian prime rate, LIBOR rate, or a Canadian Dealer Offered Rate ("CDOR") rate plus applicable margins, at the election of the borrowers and as a function of draw down currency. The applicable margin varies based upon Delek Logistics' Leverage Ratio, which is defined as the ratio of total funded debt to EBITDA for the most recently ended four fiscal quarters. At March 31, 2014, the weighted average borrowing rate was approximately 2.7%. Additionally, the DKL Revolver requires us to pay a leverage ratio dependent quarterly fee on the average unused revolving commitment. As of March 31, 2014, this fee was 0.40% per year. As of March 31, 2014, Delek Logistics had $260.5 million of outstanding borrowings under the DKL Revolver, as well as letters of credit issued of $13.5 million. Amounts available under the DKL Revolver, as of March 31, 2014, were approximately $126.0 million.
	Reliant Bank Revolver
	We have a revolving credit agreement with Reliant Bank ("Reliant Bank Revolver") that provides for unsecured loans of up to $10.0 million. As of March 31, 2014, we had $10.0 million outstanding under this facility. The Reliant Bank Revolver matures on June 28, 2014, and bears interest at a fixed rate of 5.25% per annum. The Reliant Bank Revolver requires us to pay a quarterly fee of 0.50% per year on the average available revolving commitment. As of March 31, 2014, the weighted average borrowing rate was 5.25%. As of March 31, 2014, we had no undrawn amounts available under the Reliant Bank Revolver.
	Promissory Notes
	In 2011, Delek began construction on new MAPCO Mart convenience stores (each a "Build-to-Suit Development" or "BTS"). In order to fund these construction projects, we entered into separate notes for each BTS project with Standard Insurance Company (collectively, the "Notes") varying in size from $1.0 million to $2.2 million. The Notes bear interest at fixed rates, ranging from 5.00% to 6.4% per annum. Each of the Notes is secured by the land or leasehold interest, as applicable, and the building and equipment of its respective completed MAPCO Mart. Under the terms of each Note, beginning on the first day of the eleventh month following the initial fund advancement, payments of principal on each respective Note are due over a ten-year term calculated using a 25-year amortization schedule. If any Note is not paid in full after the initial ten-year period, we may continue to make monthly payments under the Note, however the interest rate will reset pursuant to the terms of the Note. There is also an additional interest rate reset after the first 20-year period. The final maturity dates of the Notes range from June 1, 2036 to November 1, 2039. As of March 31, 2014, we had amounts drawn under 29 Notes related to these BTS projects, for a total amount of approximately $31.7 million outstanding under the Notes.
	On April 29, 2011, Delek entered into a $50.0 million promissory note ("Ergon Note") with Ergon, Inc. ("Ergon") in connection with the closing of our acquisition of Lion Oil. As of March 31, 2014, $40.0 million was outstanding under the Ergon Note. The Ergon Note requires Delek to make annual amortization payments of $10.0 million each commencing April 29, 2013. The Ergon Note matures on April 29, 2017. Interest under the Ergon Note is computed at a fixed rate equal to 4.0% per annum.
	On December 19, 2011, Delek entered into a $25.0 million promissory note ("Ergon Paline Note") with Ergon Terminaling, Inc. ("Ergon Terminaling") in connection with the closing of the acquisition of all of the membership interests of Paline from Ergon Terminaling. The Ergon Paline Note was subsequently assigned by Ergon Terminaling to Ergon. As of March 31, 2014, $6.3 million was outstanding under the Ergon Paline Note. The Ergon Paline Note requires Delek to make quarterly amortization payments of approximately $2.1 million each commencing on March 31, 2012. The Ergon Paline Note matures on December 19, 2014. Interest under the Ergon Paline Note is computed at a fixed rate equal to 6.00% per annum.
	Term Loan Facility
	Delek has a $90.0 million term loan credit facility ("Term Loan Facility") with Israeli Discount Bank of New York and Bank Hapoalim B.M as the lenders. As of March 31, 2014, $90.0 million was outstanding under the Term Loan Facility. The Term Loan Facility requires Delek to make quarterly amortization payments of $4.5 million each commencing on December 31, 2014. The Term Loan Facility matures on December 18, 2018, and is secured by (i) all assets of Lion Oil (excluding inventory and accounts receivable), (ii) all of our shares in Lion Oil, and (iii) a first priority lien on the subordinated and common units of Delek Logistics held by Lion Oil. Interest on the unpaid balance of the Term Loan Facility is computed at a rate per annum equal to the LIBOR Rate or the Reference Rate, at our election, plus the applicable margins, subject in each case to an interest rate floor of 5.5% per annum. As of March 31, 2014, the weighted average borrowing rate was 5.50%.
	Restrictive Covenants
	Under the terms of our MAPCO Revolver, Wells ABL, DKL Revolver, Reliant Bank Revolver and Term Loan Facility we are required to comply with certain usual and customary financial and non-financial covenants. Further, although we were not required to comply with a fixed charge coverage ratio financial covenant under the Wells ABL during the three months ended March 31, 2014, we may be required to comply with this covenant at times when the borrowing base excess availability is less than certain thresholds, as defined in the Wells ABL. We believe we were in compliance with all covenant requirements under each of our credit facilities as of March 31, 2014.
	Certain of our credit facilities contain limitations on the incurrence of additional indebtedness, making of investments, creation of liens, disposition of property, making of restricted payments and transactions with affiliates. Specifically, these covenants may limit the payment, in the form of cash or other assets, of dividends or other distributions, or the repurchase of shares with respect to the equity of our subsidiaries. Additionally, certain of our credit facilities limit our ability to make investments, including extensions of loans or advances to, or acquisition of equity interests in, or guarantees of obligations of, any other entities.
	Interest-Rate Derivative Instruments
	Delek entered into interest rate swap and cap agreements for a total notional amount of $205.0 million. These agreements are intended to economically hedge floating interest rate risk related to our current debt. However, as we have elected to not apply the permitted hedge accounting treatment, including formal hedge designation and documentation, in accordance with the provisions of ASC 815, Derivatives and Hedging (ASC 815), the fair value of the derivatives is recorded in other non-current liabilities in the accompanying condensed consolidated balance sheets with the offset recognized in earnings. The derivative instruments mature in 2015 and 2016. The estimated mark-to-market liability associated with our interest rate derivatives, as of March 31, 2014 and December 31, 2013, was $2.4 million and $2.7 million, respectively.
	In accordance with ASC 815, we recorded non-cash income representing the change in estimated fair value of the interest rate swap and cap agreements of $0.3 million and $0.4 million for the three months ended March 31, 2014 and 2013, respectively.
	While Delek has not elected to apply permitted hedge accounting treatment for these interest rate derivatives in accordance with the provisions of ASC 815 in the past, we may choose to apply that treatment for future transactions.

Income_Taxes_Notes

Income Taxes (Notes)	3 Months Ended
	Mar. 31, 2014
Income Taxes [Abstract]	'
Income Taxes	'
	Income Taxes
	At March 31, 2014, Delek had unrecognized tax benefits of $0.3 million which, if recognized, would affect our effective tax rate. Delek recognizes accrued interest and penalties related to unrecognized tax benefits as an adjustment to the current provision for income taxes. Interest of a nominal amount was recognized related to unrecognized tax benefits during both the three months ended March 31, 2014 and 2013.

Shareholders_Equity_Notes

Shareholders' Equity (Notes)	3 Months Ended
	Mar. 31, 2014
Shareholders’ Equity [Abstract]	'
Shareholders' Equity	'
	Shareholders' Equity
	Changes to equity during the three months ended March 31, 2014 are presented below (in millions):
		Delek Stockholders' Equity			Non-Controlling Interest in Subsidiaries			Total Stockholders' Equity
	Balance at December 31, 2013	$	935		$	185.4		$	1,120.40
	Net income	33.7			5.6			39.3
	Unrealized gain on cash flow hedges, net of deferred income tax expense of $9.0 million	15.7			—			15.7
	Common stock dividends ($0.25 per share)	(14.9		)	—			(14.9		)
	Distribution to non-controlling interest	—			(3.9		)	(3.9		)
	Equity-based compensation expense	2.8			0.3			3.1
	Income tax benefit of equity-based compensation expense	0.5			—			0.5
	Taxes paid due to the net settlement of equity-based compensation	(3.3		)	—			(3.3		)
	Exercise of equity-based awards	0.1			—			0.1
	Balance at March 31, 2014	$	969.6		$	187.4		$	1,157.00
	Dividends
	During the three months ended March 31, 2014, our Board of Directors declared the following dividends:
	Date Declared	Dividend Amount Per Share		Record Date	Payment Date
	February 25, 2014	$0.15		March 11, 2014	March 25, 2014
	March 13, 2014	$0.10		April 3, 2014	April 24, 2014
	Stock Repurchase Program
	On March 13, 2014, we announced that our Board of Directors had authorized a $50.0 million common stock repurchase program (the "2014 Repurchase Program"). The repurchases are intended to be implemented through open market transactions or in privately negotiated transactions, in accordance with applicable securities laws. The timing, price, and size of repurchases will be made at the discretion of management and will depend upon prevailing market prices, general economic and market conditions and other considerations. The 2014 Repurchase Program does not obligate us to acquire any particular amount of stock and the authorization under the 2014 Repurchase Program will expire on December 31, 2014. No shares of common stock were purchased under the 2014 Repurchase Program during the three months ended March 31, 2014.

Equity_Based_Compensation_Note

Equity Based Compensation (Notes)	3 Months Ended
	Mar. 31, 2014
Equity Based Compensation [Abstract]	'
Equity Based Compensation	'
	Equity Based Compensation
	Delek US Holdings, Inc. 2006 Long-Term Incentive Plan
	Compensation expense for equity-based awards amounted to $2.6 million ($1.7 million, net of taxes) and $2.0 million ($1.3 million, net of taxes) for the three months ended March 31, 2014 and 2013, respectively. These amounts are included in general and administrative expenses in the accompanying condensed consolidated statements of income.
	As of March 31, 2014, there was $23.3 million of total unrecognized compensation cost related to non-vested share-based compensation arrangements, which is expected to be recognized over a weighted-average period of 2.4 years.
	We issued 80,182 and 214,756 shares of common stock as a result of exercised stock options, stock appreciation rights, and vested restricted stock units during the three months ended March 31, 2014 and 2013, respectively. These amounts do not include shares withheld to satisfy employee tax obligations related to the exercises and vestings. These withheld shares totaled 58,152 and 158,632 shares during the three months ended March 31, 2014 and 2013, respectively.
	Delek Logistics, GP, LLC 2012 Long-Term Incentive Plan
	Compensation expense for these awards was $0.4 million ($0.3 million, net of taxes) for both the three months ended March 31, 2014 and 2013. As of March 31, 2014, there was $5.0 million of total unrecognized compensation cost related to non-vested share-based compensation arrangements, which is expected to be recognized over a weighted-average period of 3.7 years.
	Granting of GP Interest
	On March 10, 2013, we granted membership interests in Logistics GP, the general partner of Delek Logistics, to certain executives, including Ezra Uzi Yemin, our Chairman, President and Chief Executive Officer. These interests consisted of a total 1.4% membership interest in Logistics GP and vested on June 10, 2013. On December 10, 2013, we granted Mr. Yemin an additional 4.0% membership interest in Logistics GP, half of which vested immediately. Subject to Mr. Yemin's continued employment with Delek, 0.50% will vest on June 10, 2014 and 0.25% will vest every six months thereafter through June 10, 2017. Total compensation expense recognized for these grants amounted to $0.1 million ($0.1 million, net of taxes) for the three months ended March 31, 2014. As of March 31, 2014, there was $0.7 million of total unrecognized compensation cost related to non-vested GP membership interests, which is expected to be recognized over a weighted-average period of 2.5 years.

Earnings_Per_Share_Notes

Earnings Per Share (Notes)	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	Earnings Per Share
	Basic and diluted earnings per share are computed by dividing net income by the weighted average common shares outstanding. The common shares used to compute Delek’s basic and diluted earnings per share are as follows:
		Three Months Ended March 31,
		2014	2013
	Weighted average common shares outstanding	59,248,855	59,571,744
	Dilutive effect of equity instruments	629,158	1,073,973
	Weighted average common shares outstanding, assuming dilution	59,878,013	60,645,717
	Outstanding common share equivalents totaling 1,226,200 and 564,700 were excluded from the diluted earnings per share calculation for the three months ended March 31, 2014 and 2013, respectively, as these common share equivalents did not have a dilutive effect under the treasury stock method.

Segment_Data_Notes

Segment Data (Notes)	3 Months Ended
	Mar. 31, 2014
Segment Data [Abstract]	'
Segment Data	'
	Segment Data
	We report our operating results in three reportable segments: refining, logistics and retail. Decisions concerning the allocation of resources and assessment of operating performance are made based on this segmentation. Management measures the operating performance of each of its reportable segments based on the segment contribution margin.
	In conjunction with the Tyler Acquisition and the El Dorado Acquisition, we reclassified certain operating segments. The results of the operation of the assets associated with these acquisitions were previously reported as part of our refining segment and are now reported in our logistics segment. The historical results of the operation of these assets have been reclassified to conform to the current presentation.
	Segment contribution margin is defined as net sales less cost of sales and operating expenses, excluding depreciation and amortization. Operations which are not specifically included in the reportable segments are included in the corporate and other category, which primarily consists of operating expenses, depreciation and amortization expense and interest income and expense associated with corporate headquarters.
	The refining segment processes crude oil and other purchased feedstocks for the manufacture of transportation motor fuels, including various grades of gasoline, diesel fuel, aviation fuel, asphalt and other petroleum-based products that are distributed through both our own and third-party product terminals and pipelines. The refining segment has a combined nameplate capacity of 140,000 bpd, comprised of 60,000 bpd at the Tyler refinery and 80,000 bpd at the El Dorado refinery.
	Our logistics segment owns and operates crude oil and refined products logistics and marketing assets. The logistics segment generates revenue and subsequently contribution margin, which we define as net sales less cost of goods sold and operating expenses, by charging fees for gathering, transporting and storing crude oil and for marketing, distributing, transporting and storing refined products.
	Our retail segment markets gasoline, diesel, other refined petroleum products and convenience merchandise through a network of company-operated retail fuel and convenience stores throughout the southeastern United States. As of March 31, 2014, we had 361 stores in total, consisting of 196 located in Tennessee, 90 in Alabama, 49 in Georgia, 12 in Arkansas, 8 in Virginia, 3 in Kentucky and 3 in Mississippi. The retail fuel and convenience stores operate under our MAPCO Express®, MAPCO Mart®, East Coast®, Fast Food and FuelTM, Favorite Markets®, Delta Express® and Discount Food MartTM brands. The retail segment also supplied fuel to approximately 67 dealer locations as of March 31, 2014. In the retail segment, management reviews operating results on a divisional basis, where a division represents a specific geographic market. These divisional operating segments exhibit similar economic characteristics, provide the same products and services, and operate in a manner such that aggregation of these operations is appropriate for segment presentation.
	Our refining business has a services agreement with our logistics segment, which, among other things, requires the refining segment to pay service fees based on the number of gallons sold at the Tyler refinery and a sharing of a portion of the margin achieved in return for providing marketing, sales and customer services. This intercompany transaction fee was $3.6 million and $3.0 million during the three months ended March 31, 2014 and 2013, respectively. Additionally, the refining segment pays crude transportation and storage fees to the logistics segment for the utilization of certain crude pipeline assets. These fees were $20.9 million and $11.9 million during the three months ended March 31, 2014 and 2013, respectively. The refining segment sold finished product and services to the retail and logistics segments in the amount of $107.2 million and $54.5 million, during the three months ended March 31, 2014 and 2013, respectively. All inter-segment transactions have been eliminated in consolidation.
	The following is a summary of business segment operating performance as measured by contribution margin for the period indicated (in millions):
		Three Months Ended March 31, 2014
		Refining			Retail			Logistics			Corporate,			Consolidated
											Other and Eliminations
	Net sales (excluding intercompany fees and sales)	$	1,255.60		$	431.6		$	178.2		$	0.3		$	1,865.70
	Intercompany fees and sales	107.2			—			25.3			(132.5		)	—
	Operating costs and expenses:
	Cost of goods sold	1,232.20			393.5			172.2			(157.5		)	1,640.40
	Operating expenses	58			32.2			9.3			(1.0		)	98.5
	Segment contribution margin	$	72.6		$	5.9		$	22		$	26.3		126.8
	General and administrative expenses													34.5
	Depreciation and amortization													24.6
	Operating income													$	67.7
	Total assets	$	1,977.50		$	449.7		$	301.3		$	207.5		$	2,936.00
	Capital spending (excluding business combinations)	$	103.2		$	6.6		$	1		$	3.5		$	114.3
		Three Months Ended March 31, 2013
		Refining			Retail			Logistics			Corporate,			Consolidated
											Other and Eliminations
	Net sales (excluding intercompany fees and sales)	$	1,615.00		$	448.8		$	196		$	0.1		$	2,259.90
	Intercompany fees and sales	54.5			—			14.9			(69.4		)	—
	Operating costs and expenses:
	Cost of goods sold	1,436.30			409.3			187.9			(61.3		)	1,972.20
	Operating expenses	58.5			31.6			9.1			(0.5		)	98.7
	Segment contribution margin	$	174.7		$	7.9		$	13.9		$	(7.5	)	189
	General and administrative expenses													32.6
	Depreciation and amortization													22
	Operating income													$	134.4
	Capital spending (excluding business combinations)	$	12.9		$	5.4		$	3.7		$	6		$	28
	Property, plant and equipment, accumulated depreciation and depreciation expense by reporting segment as of and for the three months ended March 31, 2014 are as follows (in millions):
		Refining			Retail			Logistics			Corporate,			Consolidated
											Other and Eliminations
	Property, plant and equipment	$	1,006.70		$	486.9		$	266.2		$	47.9		$	1,807.70
	Less: Accumulated depreciation	(204.8		)	(175.1		)	(42.6		)	(5.7		)	(428.2		)
	Property, plant and equipment, net	$	801.9		$	311.8		$	223.6		$	42.2		$	1,379.50
	Depreciation expense for the three months ended March 31, 2014	$	12.9		$	7.1		$	3.2		$	1.1		$	24.3
	In accordance with ASC 360, Property, Plant & Equipment, Delek evaluates the realizability of property, plant and equipment as events occur that might indicate potential impairment.

Fair_Value_Measurements_Notes

Fair Value Measurements (Notes)	3 Months Ended
	Mar. 31, 2014
Fair Value Measurements [Abstract]	'
Fair Value Measurements	'
	Fair Value Measurements
	The fair values of financial instruments are estimated based upon current market conditions and quoted market prices for the same or similar instruments. Management estimates that the carrying value approximates fair value for all of Delek’s assets and liabilities that fall under the scope of ASC 825, Financial Instruments.
	Delek applies the provisions of ASC 820, Fair Value Measurements (ASC 820), which defines fair value, establishes a framework for its measurement and expands disclosures about fair value measurements. ASC 820 applies to our interest rate and commodity derivatives that are measured at fair value on a recurring basis. The standard also requires that we assess the impact of nonperformance risk on our derivatives. Nonperformance risk is not considered material at this time.
	ASC 820 requires disclosures that categorize assets and liabilities measured at fair value into one of three different levels depending on the observability of the inputs employed in the measurement. Level 1 inputs are quoted prices in active markets for identical assets or liabilities. Level 2 inputs are observable inputs other than quoted prices included within Level 1 for the asset or liability, either directly or indirectly through market-corroborated inputs. Level 3 inputs are unobservable inputs for the asset or liability reflecting our assumptions about pricing by market participants.
	Over the Counter ("OTC") commodity swaps, physical commodity purchase and sale contracts and interest rate swaps and caps are generally valued using industry-standard models that consider various assumptions, including quoted forward prices for interest rates, time value, volatility factors and contractual prices for the underlying instruments, as well as other relevant economic measures. The degree to which these inputs are observable in the forward markets determines the classification as Level 2 or 3. Our contracts are valued using quotations provided by brokers based on exchange pricing and/or price index developers such as Platts or Argus and are, therefore, classified as Level 2.
	The fair value hierarchy for our financial assets and liabilities accounted for at fair value on a recurring basis at March 31, 2014 and December 31, 2013, was as follows (in millions):
		As of March 31, 2014
		Level 1		Level 2			Level 3		Total
	Assets
	Commodity derivatives	$	—	$	67.6		$	—	$	67.6
	Interest rate derivatives	—		0.1			—		0.1
	Total assets	—		67.7			—		67.7
	Liabilities
	Commodity derivatives	—		(20.7		)	—		(20.7		)
	Interest rate derivatives	—		(2.5		)	—		(2.5		)
	Total liabilities	—		(23.2		)	—		(23.2		)
	Net assets	$	—	$	44.5		$	—	$	44.5
		As of December 31, 2013
		Level 1		Level 2			Level 3		Total
	Assets
	Commodity derivatives	$	—	$	23.9		$	—	$	23.9
	Interest rate derivatives	—		0.1			—		0.1
	Total assets	—		24			—		24
	Liabilities
	Commodity derivatives	—		(24.9		)	—		(24.9		)
	Interest rate derivatives	—		(2.8		)	—		(2.8		)
	Total liabilities	—		(27.7		)	—		(27.7		)
	Net liabilities	$	—	$	(3.7	)	$	—	$	(3.7	)
	The derivative values above are based on analysis of each contract as the fundamental unit of account as required by ASC 820. Derivative assets and liabilities with the same counterparty are not netted where the legal right of offset exists. This differs from the presentation in the financial statements which reflects our policy under the guidance of ASC 815-10-45, wherein we have elected to offset the fair value amounts recognized for multiple derivative instruments executed with the same counterparty, and where the legal right of offset exists. As of March 31, 2014 and December 31, 2013, $2.7 million and $2.6 million, respectively, of cash collateral was held by counterparty brokerage firms and has been netted with the derivative positions with each counterparty.

Derivative_Instruments_Notes

Derivative Instruments (Notes)	3 Months Ended
	Mar. 31, 2014
Derivative Instruments [Abstract]	'
Derivative Instruments	'
	Derivative Instruments
	We use derivatives to reduce normal operating and market risks with the primary objective of reducing the impact of market price volatility on our results of operations. As such, our use of derivatives is aimed at:
	•	limiting the exposure to price fluctuations of commodity inventory above or below target levels at each of our segments;
	•	managing our exposure to commodity price risk associated with the purchase or sale of crude oil, feedstocks and finished grade fuel products at each of our segments; and
	•	limiting the exposure to floating-interest rate fluctuations on our borrowings.
	We primarily utilize OTC commodity swaps, generally with maturity dates of two years or less, and interest rate swap and cap agreements to achieve these objectives. OTC commodity swap contracts require cash settlement for the commodity based on the difference between a fixed or floating price and the market price on the settlement date. Interest rate swap and cap agreements economically hedge floating rate debt by exchanging interest rate cash flows, based on a notional amount from a floating rate to a fixed rate. We do not believe there is any material credit risk with respect to the counterparties to these contracts.
	In accordance with ASC 815, certain of our OTC commodity swap contracts have been designated as cash flow hedges and the change in fair value between the execution date and the end of period has been recorded in other comprehensive income. The fair value of these contracts is recognized in income at the time the positions are closed and the hedged transactions are recognized in income.
	From time to time, we also enter into futures contracts with supply vendors that secure supply of product to be purchased for use in the normal course of business at our refining and retail segments. These contracts are priced based on an index that is clearly and closely related to the product being purchased, contain no net settlement provisions and typically qualify under the normal purchase exemption from derivative accounting treatment under ASC 815.
	The following table presents the fair value of our derivative instruments, as of March 31, 2014 and December 31, 2013. The fair value amounts below are presented on a gross basis and do not reflect the netting of asset and liability positions permitted under our master netting arrangements, including cash collateral on deposit with our counterparties. We have elected to offset the recognized fair value amounts for multiple derivative instruments executed with the same counterparty in our financial statements. As a result, the asset and liability amounts below will not agree with the amounts presented in our condensed consolidated balance sheets (in millions):
				March 31, 2014						December 31, 2013
	Derivative Type	Balance Sheet Location		Assets			Liabilities			Assets		Liabilities
	Derivatives not designated as hedging instruments:
	OTC commodity swaps(1)	Other current assets		$	47.5		$	(16.7	)	$	4.4	$	(3.5	)
	OTC commodity swaps(1)	Other current liabilities		—			—			15		(8.5		)
	Interest rate derivatives	Other long term assets		0.1			—			0.1		—
	Interest rate derivatives	Other long term liabilities		—			(2.5		)	—		(2.8		)
	Derivatives designated as hedging instruments:
	OTC commodity swaps(1)	Other current assets		20.1			(4.0		)	—		—
	OTC commodity swaps(1)	Other current liabilities		—			—			4.5		(12.9		)
	Total gross fair value of derivatives			67.7			(23.2		)	24		(27.7		)
	Less: Counterparty netting and cash collateral(2)			20			(22.7		)	22.6		(25.2		)
	Total net fair value of derivatives			47.7			(0.5		)	1.4		(2.5		)
	(1)	As of March 31, 2014 and December 31, 2013, we had open derivative contracts representing 32,865,750 barrels and 19,927,000 barrels, respectively, of crude oil and refined petroleum products. Of these open contracts, contracts representing 14,460,000 and 9,292,000 barrels were designated as hedging instruments as of March 31, 2014 and December 31, 2013, respectively.
	(2)	As of March 31, 2014 and December 31, 2013, $2.7 million and $2.6 million, respectively, of cash collateral has been netted with the derivative positions with each counterparty. Included in these amounts is $2.0 million of cash collateral associated with our interest rate derivatives as of both March 31, 2014 and December 31, 2013.
	Gains (losses) recognized associated with derivatives not designated as hedging instruments for the three months ended March 31, 2014 and 2013 are as follows (in millions):
				Three Months Ended March 31,
	Derivative Type	Income Statement Location		2014			2013
	OTC commodity swaps	Cost of goods sold		$	27.8		$	(4.0	)
	Interest rate derivatives	Interest expense		0.3			0.4
		Total		$	28.1		$	(3.6	)
	Gains on our derivatives designated as cash flow hedging instruments for the three months ended March 31, 2014 and 2013 are as follows (in millions):
			Three Months Ended March 31,
			2014			2013
	OTC commodity swaps:
	Gain recognized in OCI (effective portion)		$	29.5		$	—
	Gain reclassified from accumulated OCI into cost of goods sold on closed positions (effective portion)		$	1.7		$	0.6
	Gain recognized in cost of goods sold related to ineffectiveness		$	3.1		$	—
	For cash flow hedges, no component of the derivative instruments’ gains or losses was excluded from the assessment of hedge effectiveness for the three months ended March 31, 2014 and 2013. As of March 31, 2014 and December 31, 2013, gains (losses) of $11.7 million and $(4.0) million, respectively, on cash flow hedges, net of tax, primarily related to future purchases of crude oil and the associated sale of finished grade fuel, remained in accumulated other comprehensive income. Gains of $1.1 million and $0.4, net of tax, were reclassified into cost of sales during the three months ended March 31, 2014 and 2013, respectively. We estimate that $14.3 million of these deferred gains will be reclassified into cost of sales over the next 12 months as a result of hedged transactions that are forecasted to occur. For the three months ended March 31, 2014 and 2013, there were no amounts reclassified from accumulated other comprehensive income into income as a result of the discontinuation of cash flow hedge accounting.

Commitments_and_Contingencies_

Commitments and Contingencies (Notes)	3 Months Ended
	Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	Commitments and Contingencies
	Litigation
	In the ordinary conduct of our business, we are from time to time subject to lawsuits, investigations and claims, including environmental claims and employee-related matters.
	We experienced a security breach by third-party hackers that may have compromised the payment card information of certain of our retail segment customers. The incident involved payment card payments for transactions at certain retail locations between March 19-25, 2013, April 14-15, 2013 and April 20-21, 2013 and several lawsuits have been brought against us as a result of this incident. Although we are unable to definitively determine the extent of any potential losses related to this breach, we do not believe that this incident will have a material adverse effect on our business, financial position or results of operations.
	Although we cannot predict with certainty the ultimate resolution of lawsuits, investigations and claims asserted against us, including civil penalties or other enforcement actions, we do not believe that any currently pending legal proceeding or proceedings to which we are a party will have a material adverse effect on our business, financial condition or results of operations.
	Self-insurance
	Delek is self-insured for workers’ compensation claims up to $1.0 million on a per accident basis. We self-insure for general liability claims, inclusive of sudden and accidental pollution claims, up to $4.0 million on a per occurrence basis. We self-insure for auto liability up to $4.0 million on a per accident basis.
	We have umbrella liability insurance available to each of our segments in an amount determined reasonable by management.
	Rate Regulation of Petroleum Pipelines
	The rates and terms and conditions of service on certain of our pipelines may be subject to regulation by the Federal Energy Regulatory Commission ("FERC") under the Interstate Commerce Act ("ICA") or by the state regulatory commissions in the states in which we transport crude oil and refined products, including the Railroad Commission of Texas, the Louisiana Public Service Commission, and the Arkansas Public Service Commission. Certain of our pipeline systems are subject to such regulation and have filed tariffs with the appropriate entities. We also comply with the reporting requirements for these pipelines. Other of our pipelines have received a waiver from FERC's tariff requirements but will comply with other applicable regulatory requirements.
	FERC regulates interstate transportation under the ICA, the Energy Policy Act of 1992 and the rules and regulations promulgated under those laws. The ICA and its implementing regulations require that tariff rates for interstate service on oil pipelines, including pipelines that transport crude oil and refined products in interstate commerce (collectively referred to as "petroleum pipelines"), be just and reasonable and non-discriminatory and that such rates and terms and conditions of service be filed with FERC. Under the ICA, shippers may challenge new or existing rates or services. FERC is authorized to suspend the effectiveness of a challenged rate for up to seven months.
	While FERC regulates rates for shipments of crude oil or refined products in interstate commerce, state agencies may regulate rates and service for shipments in intrastate commerce. We own pipeline assets in Texas, Arkansas and Louisiana.
	Environmental Health and Safety
	We are subject to various federal, state and local environmental and safety laws enforced by agencies including the United States Environmental Protection Agency (the "EPA"), the U.S. Department of Transportation/ Pipeline and Hazardous Materials Safety Administration, the Occupational Safety and Health Administration, the Texas Commission on Environmental Quality, the Railroad Commission of Texas, the Arkansas Department of Environmental Quality and the Tennessee Department of Environment and Conservation as well as other state and federal agencies. Numerous permits or other authorizations are required under these laws for the operation of our refineries, terminals, pipelines, underground storage tanks ("USTs") and related operations, and may be subject to revocation, modification and renewal.
	These laws and permits raise potential exposure to future claims and lawsuits involving environmental and safety matters which could include soil and water contamination, air pollution, personal injury and property damage allegedly caused by substances which we manufactured, handled, used, released or disposed, or that relate to pre-existing conditions for which we have assumed responsibility. We believe that our current operations are in substantial compliance with existing environmental and safety requirements. However, there have been and will continue to be ongoing discussions about environmental and safety matters between us and federal and state authorities, including notices of violations, citations and other enforcement actions, some of which have resulted or may result in changes to operating procedures and in capital expenditures. While it is often difficult to quantify future environmental or safety related expenditures, we anticipate that continuing capital investments and changes in operating procedures will be required for the foreseeable future to comply with existing and new requirements as well as evolving interpretations and more strict enforcement of existing laws and regulations.
	The Comprehensive Environmental Response, Compensation and Liability Act, also known as Superfund, imposes liability, without regard to fault or the legality of the original conduct, on certain classes of persons who are considered to be responsible for the release of a hazardous substance into the environment. Analogous state laws impose similar responsibilities and liabilities on responsible parties. In the course of our ordinary operations, our various businesses generate waste, some of which falls within the statutory definition of a hazardous substance and some of which may have been disposed of at sites that may require future cleanup under Superfund. At this time, our El Dorado refinery has been named as a minor potentially responsible party at one site for which we believe future costs will not be material.
	As of March 31, 2014, we carried a liability of approximately $9.9 million, primarily related to the probable estimated costs of remediating or otherwise addressing certain environmental issues of a non-capital nature at the Tyler and El Dorado refineries. This liability includes estimated costs for ongoing investigation and remediation efforts, which were already being performed by the former operators of the Tyler and El Dorado refineries prior to our acquisition of these facilities, for known contamination of soil and groundwater, as well as estimated costs for additional issues which have been identified subsequent to the purchase. We expect approximately $0.6 million of this amount to be reimbursable by a prior owner of the El Dorado refinery and have recorded $0.1 million in other current assets and $0.5 million in other non-current assets in our condensed consolidated balance sheet as of March 31, 2014. Approximately $1.0 million of the total liability is expected to be expended over the next 12 months with most of the balance expended by 2022. In the future we could be required to undertake additional investigations of our refineries, pipelines and terminal facilities or convenience stores, which could result in additional remediation liabilities.
	Most of the cost of remediating releases from USTs in our retail segment is reimbursed by state reimbursement funds which are funded by a tax on petroleum products and subject to certain deductible amounts. As of March 31, 2014, the amount accrued for such UST-related remediation was less than $0.1 million.
	The EPA issued final rules for gasoline formulation that required the reduction of average benzene content by January 1, 2011 and the reduction of maximum annual average benzene content by July 1, 2012. We completed a project at the Tyler refinery in the fourth quarter of 2010 to partially reduce gasoline benzene levels. However, it is necessary for us to purchase credits to fully comply with these content requirements for the Tyler refinery. Although credits have been acquired that we believe will be sufficient to cover our obligations through at least 2015, there can be no assurance that such credits will be available in the future or that we will be able to purchase available credits at reasonable prices. Additional benzene reduction projects may be implemented to reduce or eliminate our need to purchase benzene credits depending on the availability and cost of such credits. For example, project to reduce gasoline benzene levels was completed at the El Dorado refinery in June 2011.
	Various legislative and regulatory measures to address climate change and greenhouse gas ("GHG") emissions (including carbon dioxide, methane and nitrous oxides) are in various phases of discussion or implementation. They include proposed and enacted federal regulation and state actions to develop statewide, regional or nationwide programs designed to control and reduce GHG emissions from fixed sources, such as our refineries, as well as mobile transportation sources. We are not aware of any state or regional initiatives for controlling existing GHG emissions that would affect our refineries. Although it is not possible to predict the requirements of any GHG legislation that ultimately may be enacted, any laws or regulations that have been or may be adopted to restrict or reduce GHG emissions will likely require us to incur increased operating and capital costs. The EPA also has indicated that it intends to regulate refinery GHG emissions from new and existing sources through a New Source Performance Standard ("NSPS"), although there is no firm proposal or date for such regulation.
	Since the 2010 calendar year, EPA rules require us to report GHG emissions from our refinery operations and consumer use of fuel products produced at our refineries on an annual basis. While the cost of compliance with the reporting rule is not material, data gathered under the rule may be used in the future to support additional regulation of GHG. Effective January 2011, the EPA began regulating GHG emissions from refineries and other major sources through the Prevention of Significant Deterioration and Federal Operating Permit (Title V) programs. While these rules do not impose any limits or controls on GHG emissions from current operations, emission increases from future projects or operational changes, such as capacity increases, may be impacted and required to meet emission limits or technological requirements such as Best Available Control Technologies.
	In mid-2012, the EPA announced an industry-wide enforcement initiative directed at flaring operations and performance at refineries and petrochemical plants. In September 2012, the EPA finalized revisions to the NSPS for Petroleum Refineries (NSPS Subpart Ja) that primarily affects flares and process heaters. We believe our existing process heaters meet the applicable requirements and our refineries have not received any associated inquiries or requests for information and are not a party to any associated enforcement action at this time. Affected flares have three years to comply with the new standard, and it is likely the standard will impact the way some flares at our Tyler and El Dorado refineries are designed and/or operated. We are planning capital projects at our refineries related to flare compliance with NSPS Subpart Ja that will be implemented in 2014-2016. The EPA has also announced its intent to further regulate refinery air emissions, through additional NSPS and National Emission Standards for Hazardous Air Pollutants to be proposed in 2014, but currently there is insufficient information available to estimate the potential cost of compliance with these rules.
	The Energy Independence and Security Act of 2007 ("EISA") increased the amounts of renewable fuel required to be blended into domestic transportation fuel supplies by the Energy Policy Act of 2005 to 32 billion gallons by 2022. The Renewable Fuel Standard - 2 (RFS-2) rule finalized by the EPA in 2010 to implement EISA, requires that most refiners blend increasing amounts of biofuels with refined products, equal to approximately 9.2% of combined gasoline and diesel volume in 2012, increasing to 9.6% in 2013 and escalating annually to approximately 18% by 2022. Because the mandate requires specified volumes of biofuels, if the demand for motor fuels decreases in future years even higher percentages of biofuels may be required. Alternatively, credits called Renewable Identification Numbers ("RINs") can be used instead of physically blending biofuels. The Tyler refinery began supplying a 10% ethanol gasoline blend (E-10) in January 2008 and 5% biodiesel blends in June 2011. The El Dorado refinery completed projects at the truck loading rack in June 2011 to make E-10 available and in July 2012 to make biodiesel blends available. In 2013, we internally generated, through our logistics, retail and refining segments, most of the RINs required to meet the obligations of our refineries, including a carryover of 2012 RINs, with a net surplus of biodiesel RINs that were available to be sold to purchase RINs in other categories.
	The EPA has proposed slightly lower overall renewable fuel obligations for 2014 in recognition of blending issues associated with exceeding the 10% "blendwall" in gasoline; however, a final rule is not expected until at least mid-year and could require increased volumes compared with 2013. Although we will have few if any carry-over RINs from 2013 to 2014, if the proposed rule is finalized, it is likely we will obtain most of the RINs required for 2014 compliance through internal operations. If the lower volumes contemplated by the proposed rule are not finalized, resulting in higher required volumes than in 2013, it will likely be necessary for our refineries to purchase RINs in the market but it is not possible at this time to predict what those volumes may be.
	In March 2013, the EPA proposed Tier 3 gasoline rules, which were finalized in March 2014. As proposed, the final Tier 3 rule requires a reduction in annual average gasoline sulfur content from 30 ppm to 10 ppm and retains the current maximum per-gallon sulfur content of 80 ppm. Larger refineries must comply with the 10 ppm sulfur standard by January 1, 2017 but the final rule provides a three-year waiver period, to January 1, 2020, for small volume refineries that processed less than 75,000 bpd in 2011 or 2012. Both our Tyler and Lion Oil refineries meet this waiver provision and will have an additional three years to comply. We anticipate that the Tyler refinery will meet these new limits when they become effective with only minor operational changes and that a minor capital project may be required for additional sulfur removal capacity at the El Dorado refinery.
	The EPA requested information pertaining to the November 2008 explosion and fire at the Tyler refinery and conducted an investigation under Section 114 of the Clean Air Act pertaining to our compliance with the chemical accident prevention standards. In late 2011, the EPA referred an enforcement action to the DOJ and we are in discussions with the EPA and the DOJ regarding what, if any, penalties and/or interim actions may be necessary. Any penalties and injunctive relief required to settle the matter are not expected to be material.
	On March 9, 2013, a release of crude oil was detected within a pumping facility at Delek Logistics' Magnolia Station located west of the El Dorado refinery. We estimate that approximately 5,900 barrels of crude oil were released, of which all but approximately 2,650 barrels were contained at the Magnolia Station. Much of the remaining released crude oil reached a nearby small creek. Cleanup operations were coordinated with the EPA and state authorities to restore the impacted area. Other than maintaining a boom on a portion of the creek as a precautionary measure, cleanup operations were concluded on April 2, 2013 and we believe we recovered over 99% of released crude oil with no material long-term effects to the environment. However, there have been discussions with ADEQ regarding whether additional monitoring or remediation of soil may be necessary. Subsequent to the release at Magnolia Station, additional crude oil releases have been identified including, without limitation, releases near Macedonia, Arkansas in October 2013 and Haynesville, Louisiana in April 2014. See Note 15 for further information regarding the release in Haynesville, Louisiana. Based on current information available to us, we do not believe the total costs associated with these events, whether alone or in the aggregate, including any fines or penalties and net of partial insurance reimbursement, will have a material adverse effect upon our business, financial condition or results of operations.
	Vendor Commitments
	We maintain an agreement with a significant vendor that requires our retail segment to purchase certain general merchandise exclusively from this vendor over a specified period of time. Additionally, we maintain agreements with certain fuel suppliers that contain terms which generally require our retail segment to purchase predetermined quantities of third-party branded fuel for a specified period of time. In certain fuel vendor contracts, penalty provisions exist if our retail segment does not purchase certain minimum quantities of fuel.
	Letters of Credit
	As of March 31, 2014, Delek had in place letters of credit totaling approximately $172.3 million with various financial institutions securing obligations with respect to its workers’ compensation and general liability self-insurance programs, crude oil purchases for the refining segment and gasoline and diesel purchases for the logistics segment. No amounts were drawn by beneficiaries of these letters of credit at March 31, 2014.

Subsequent_Events_Notes

Subsequent Events (Notes)	3 Months Ended
	Mar. 31, 2014
Subsequent Events [Abstract]	'
Subsequent Events	'
	Subsequent Events
	Dividend Declaration
	On May 6, 2014, our Board of Directors voted to declare a quarterly cash dividend of $0.15 per share, payable on June 17, 2014 to shareholders of record on May 27, 2014.
	Haynesville Spill
	On April 25, 2014, a release of an estimated 300 to 400 barrels of crude oil occurred from a Delek Logistics gathering line near Haynesville, Louisiana. Some of the oil flowed into a section of a nearby dry ravine, but no significant environmental or public impacts have been identified. Emergency cleanup operations were coordinated with Louisiana and federal officials and concluded on May 7, 2014. Site maintenance, and remediation, if determined to be necessary, may continue for several months or longer. Based on current information available to us, we do not believe the total costs associated with this event, including any fines or penalties and net of partial insurance reimbursement, will have a material adverse effect upon our business, financial condition or results of operations.
	MAPCO Refinancing
	On May 6, 2014, MAPCO Express refinanced its MAPCO Revolver by entering into a Third Amended and Restated Credit Agreement with Fifth Third Bank as Administrative Agent and a syndicate of lenders (the “Successor MAPCO Revolver”). The Successor MAPCO Revolver amends and restates the principal terms and conditions of the MAPCO Revolver to, among other things, extend the maturity date of the MAPCO Revolver to May 6, 2019, modify certain financial and non-financial covenants, and effect certain changes to the interest rate pricing grid and fees. The Successor MAPCO Revolver includes (i) a $160.0 million revolving credit facility, which includes a $10.0 million sub-limit for swing line loans and a $40.0 million sublimit for letters of credit and (ii) an accordion feature that permits an increase in such revolving credit facility by up to $50.0 million, subject to additional lender commitments. Borrowings under the Successor MAPCO Revolver are secured by (i) substantially all the assets of MAPCO Express and its subsidiaries, subject to certain exemptions and limitations, (ii) all of Delek’s shares in MAPCO Express and (iii) a limited guaranty provided by Delek of up to $50.0 million in obligations.

Organization_and_Basis_of_Pres1

Organization and Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2014
Organization and Basis of Presentation [Abstract]	'
Consolidation of variable interest entity policy	'
	Our condensed consolidated financial statements include Delek Logistics Partners, LP ("Delek Logistics"), a variable interest entity. Because our consolidated subsidiary, Delek Logistics GP, LLC ("Logistics GP"), is the general partner of Delek Logistics, we have the ability to direct the activities of Delek Logistics that most significantly impact its economic performance. We are also considered to be the primary beneficiary for accounting purposes and are Delek Logistics' primary customer. Delek Logistics does not derive an amount of gross margin material to us from third parties. However, in the event that Delek Logistics incurs a loss, our operating results will reflect Delek Logistics' loss, net of intercompany eliminations, to the extent of our ownership interest in Delek Logistics.
Use of estimates policy	'
	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
New accounting pronouncements	'
	New Accounting Pronouncements
	On January 1, 2014 we adopted guidance issued by the Financial Accounting Standards Board regarding "Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists" to eliminate diversity in practice. This guidance requires that companies net their unrecognized tax benefits against all same-jurisdiction net operating losses or tax credit carryforwards that would be used to settle the position with a tax authority. The adoption of this guidance did not materially affect our business, financial position or results of operations.

Inventory_Policies

Inventory (Policies)	3 Months Ended
	Mar. 31, 2014
Inventory [Abstract]	'
Inventory policy	'
	Refinery inventory consists of crude oil, in-process, refined products and blendstocks which are stated at the lower of cost or market. Cost of inventory for the Tyler refinery is determined under the last-in, first-out ("LIFO") valuation method. Cost of crude oil, in-process, refined product and feedstock inventories in excess of market value is charged to cost of goods sold. Cost of inventory for the operations of Lion Oil is determined on a first-in, first-out ("FIFO") basis.
	Logistics inventory consists of refined products which are stated at the lower of cost or market on a FIFO basis.
	Retail inventory consists of gasoline, diesel fuel, other petroleum products, cigarettes, beer, convenience merchandise and food service merchandise. Fuel inventories are stated at the lower of cost or market on a FIFO basis. Non-fuel inventories are stated at estimated cost as determined by the retail inventory method.

Segment_Data_Segment_Data_Poli

Segment Data Segment Data (Policies)	3 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Property, Plant and Equipment, Policy [Policy Text Block]	'
	In accordance with ASC 360, Property, Plant & Equipment, Delek evaluates the realizability of property, plant and equipment as events occur that might indicate potential impairment.

Fair_Value_Measurements_Polici

Fair Value Measurements (Policies)	3 Months Ended
	Mar. 31, 2014
Fair Value Measurements [Abstract]	'
Fair value of financial Instruments policy	'
	ASC 820 requires disclosures that categorize assets and liabilities measured at fair value into one of three different levels depending on the observability of the inputs employed in the measurement. Level 1 inputs are quoted prices in active markets for identical assets or liabilities. Level 2 inputs are observable inputs other than quoted prices included within Level 1 for the asset or liability, either directly or indirectly through market-corroborated inputs. Level 3 inputs are unobservable inputs for the asset or liability reflecting our assumptions about pricing by market participants.

Delek_Logistics_Partners_LP_Ta

Delek Logistics Partners, LP (Tables)	3 Months Ended
	Mar. 31, 2014
Variable Interest Entity, Measure of Activity [Abstract]	'
Subsidiary balance sheet	'
	With the exception of affiliate balances which are eliminated in consolidation, the Delek Logistics condensed consolidated balance sheets as of March 31, 2014 and December 31, 2013, as presented below, are included in the consolidated balance sheets of Delek.
		March 31,			December 31, 2013(1)
		2014
		(In millions)
		(Unaudited)
	ASSETS
	Cash and cash equivalents	$	4.1		$	0.9
	Accounts receivable	31.5			29
	Accounts receivable from related parties	0.7			—
	Inventory	14			17.5
	Other current assets	0.2			0.3
	Net property, plant and equipment	223.6			225.8
	Goodwill	10.5			10.5
	Intangible assets, net	12			12.3
	Other non-current assets	4.7			5
	Total assets	$	301.3		$	301.3
	LIABILITIES AND EQUITY
	Accounts payable	$	24.6		$	26
	Accounts payable to related parties	—			1.5
	Accrued expenses and other current liabilities	11.2			12.2
	Revolving credit facility	260.5			164.8
	Asset retirement obligations	3.1			3.1
	Deferred tax liabilities	0.3			0.3
	Other non-current liabilities	5.7			6.2
	Equity	(4.1		)	87.2
	Total liabilities and equity	$	301.3		$	301.3

Inventory_Tables

Inventory (Tables)	3 Months Ended
	Mar. 31, 2014
Inventory [Abstract]	'
Schedule of Inventory, Current [Table Text Block]	'
	Carrying value of inventories consisted of the following (in millions):
		March 31,		December 31,
		2014		2013
	Refinery raw materials and supplies	$	277.3	$	250.9
	Refinery work in process	67.9		58.6
	Refinery finished goods	187.3		299.2
	Retail fuel	16.1		19.2
	Retail merchandise	26.7		26.9
	Logistics refined products	14		17.5
	Total inventories	$	589.3	$	672.3

LongTerm_Obligations_and_Notes1

Long-Term Obligations and Notes Payable (Tables)	3 Months Ended
	Mar. 31, 2014
Long-Term Obligations and Notes Payable [Abstract]	'
Schedule of Long-term Debt Instruments [Table Text Block]	'
	Outstanding borrowings under Delek’s existing debt instruments and capital lease obligations are as follows (in millions):
		March 31,		December 31,
		2014		2013
	MAPCO Revolver	$	51	$	67.5
	DKL Revolver	260.5		164.8
	Reliant Bank Revolver	10		10
	Promissory notes	78		77.4
	Term Loan Facility	90		90
	Capital lease obligations	0.5		0.6
		490		410.3
	Less: Current portion of long-term debt, notes payable and capital lease obligations	36		33.7
		$	454	$	376.6

Shareholders_Equity_Tables

Shareholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2014
Shareholders’ Equity [Abstract]	'
Schedule of Stockholders Equity [Table Text Block]	'
	Changes to equity during the three months ended March 31, 2014 are presented below (in millions):
		Delek Stockholders' Equity			Non-Controlling Interest in Subsidiaries			Total Stockholders' Equity
	Balance at December 31, 2013	$	935		$	185.4		$	1,120.40
	Net income	33.7			5.6			39.3
	Unrealized gain on cash flow hedges, net of deferred income tax expense of $9.0 million	15.7			—			15.7
	Common stock dividends ($0.25 per share)	(14.9		)	—			(14.9		)
	Distribution to non-controlling interest	—			(3.9		)	(3.9		)
	Equity-based compensation expense	2.8			0.3			3.1
	Income tax benefit of equity-based compensation expense	0.5			—			0.5
	Taxes paid due to the net settlement of equity-based compensation	(3.3		)	—			(3.3		)
	Exercise of equity-based awards	0.1			—			0.1
	Balance at March 31, 2014	$	969.6		$	187.4		$	1,157.00
Schedule of Dividends Payable [Table Text Block]	'
	During the three months ended March 31, 2014, our Board of Directors declared the following dividends:
	Date Declared	Dividend Amount Per Share		Record Date	Payment Date
	February 25, 2014	$0.15		March 11, 2014	March 25, 2014
	March 13, 2014	$0.10		April 3, 2014	April 24, 2014

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Schedule of Weighted Average Number of Shares [Table Text Block]	'
	The common shares used to compute Delek’s basic and diluted earnings per share are as follows:
		Three Months Ended March 31,
		2014	2013
	Weighted average common shares outstanding	59,248,855	59,571,744
	Dilutive effect of equity instruments	629,158	1,073,973
	Weighted average common shares outstanding, assuming dilution	59,878,013	60,645,717

Segment_Data_Tables

Segment Data (Tables)	3 Months Ended
	Mar. 31, 2014
Segment Reporting Information [Line Items]	'
Schedule of Segment Reporting Information, by Segment [Table Text Block]	'
	The following is a summary of business segment operating performance as measured by contribution margin for the period indicated (in millions):
		Three Months Ended March 31, 2014
		Refining			Retail			Logistics			Corporate,			Consolidated
											Other and Eliminations
	Net sales (excluding intercompany fees and sales)	$	1,255.60		$	431.6		$	178.2		$	0.3		$	1,865.70
	Intercompany fees and sales	107.2			—			25.3			(132.5		)	—
	Operating costs and expenses:
	Cost of goods sold	1,232.20			393.5			172.2			(157.5		)	1,640.40
	Operating expenses	58			32.2			9.3			(1.0		)	98.5
	Segment contribution margin	$	72.6		$	5.9		$	22		$	26.3		126.8
	General and administrative expenses													34.5
	Depreciation and amortization													24.6
	Operating income													$	67.7
	Total assets	$	1,977.50		$	449.7		$	301.3		$	207.5		$	2,936.00
	Capital spending (excluding business combinations)	$	103.2		$	6.6		$	1		$	3.5		$	114.3
		Three Months Ended March 31, 2013
		Refining			Retail			Logistics			Corporate,			Consolidated
											Other and Eliminations
	Net sales (excluding intercompany fees and sales)	$	1,615.00		$	448.8		$	196		$	0.1		$	2,259.90
	Intercompany fees and sales	54.5			—			14.9			(69.4		)	—
	Operating costs and expenses:
	Cost of goods sold	1,436.30			409.3			187.9			(61.3		)	1,972.20
	Operating expenses	58.5			31.6			9.1			(0.5		)	98.7
	Segment contribution margin	$	174.7		$	7.9		$	13.9		$	(7.5	)	189
	General and administrative expenses													32.6
	Depreciation and amortization													22
	Operating income													$	134.4
	Capital spending (excluding business combinations)	$	12.9		$	5.4		$	3.7		$	6		$	28
	Property, plant and equipment, accumulated depreciation and depreciation expense by reporting segment as of and for the three months ended March 31, 2014 are as follows (in millions):
		Refining			Retail			Logistics			Corporate,			Consolidated
											Other and Eliminations
	Property, plant and equipment	$	1,006.70		$	486.9		$	266.2		$	47.9		$	1,807.70
	Less: Accumulated depreciation	(204.8		)	(175.1		)	(42.6		)	(5.7		)	(428.2		)
	Property, plant and equipment, net	$	801.9		$	311.8		$	223.6		$	42.2		$	1,379.50
	Depreciation expense for the three months ended March 31, 2014	$	12.9		$	7.1		$	3.2		$	1.1		$	24.3

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2014
Fair Value Measurements [Abstract]	'
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	'
	The fair value hierarchy for our financial assets and liabilities accounted for at fair value on a recurring basis at March 31, 2014 and December 31, 2013, was as follows (in millions):
		As of March 31, 2014
		Level 1		Level 2			Level 3		Total
	Assets
	Commodity derivatives	$	—	$	67.6		$	—	$	67.6
	Interest rate derivatives	—		0.1			—		0.1
	Total assets	—		67.7			—		67.7
	Liabilities
	Commodity derivatives	—		(20.7		)	—		(20.7		)
	Interest rate derivatives	—		(2.5		)	—		(2.5		)
	Total liabilities	—		(23.2		)	—		(23.2		)
	Net assets	$	—	$	44.5		$	—	$	44.5
		As of December 31, 2013
		Level 1		Level 2			Level 3		Total
	Assets
	Commodity derivatives	$	—	$	23.9		$	—	$	23.9
	Interest rate derivatives	—		0.1			—		0.1
	Total assets	—		24			—		24
	Liabilities
	Commodity derivatives	—		(24.9		)	—		(24.9		)
	Interest rate derivatives	—		(2.8		)	—		(2.8		)
	Total liabilities	—		(27.7		)	—		(27.7		)
	Net liabilities	$	—	$	(3.7	)	$	—	$	(3.7	)

Derivative_Instruments_Tables

Derivative Instruments (Tables)	3 Months Ended
	Mar. 31, 2014
Derivative Instruments [Abstract]	'
Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location [Table Text Block]	'
	The following table presents the fair value of our derivative instruments, as of March 31, 2014 and December 31, 2013. The fair value amounts below are presented on a gross basis and do not reflect the netting of asset and liability positions permitted under our master netting arrangements, including cash collateral on deposit with our counterparties. We have elected to offset the recognized fair value amounts for multiple derivative instruments executed with the same counterparty in our financial statements. As a result, the asset and liability amounts below will not agree with the amounts presented in our condensed consolidated balance sheets (in millions):
				March 31, 2014						December 31, 2013
	Derivative Type	Balance Sheet Location		Assets			Liabilities			Assets		Liabilities
	Derivatives not designated as hedging instruments:
	OTC commodity swaps(1)	Other current assets		$	47.5		$	(16.7	)	$	4.4	$	(3.5	)
	OTC commodity swaps(1)	Other current liabilities		—			—			15		(8.5		)
	Interest rate derivatives	Other long term assets		0.1			—			0.1		—
	Interest rate derivatives	Other long term liabilities		—			(2.5		)	—		(2.8		)
	Derivatives designated as hedging instruments:
	OTC commodity swaps(1)	Other current assets		20.1			(4.0		)	—		—
	OTC commodity swaps(1)	Other current liabilities		—			—			4.5		(12.9		)
	Total gross fair value of derivatives			67.7			(23.2		)	24		(27.7		)
	Less: Counterparty netting and cash collateral(2)			20			(22.7		)	22.6		(25.2		)
	Total net fair value of derivatives			47.7			(0.5		)	1.4		(2.5		)
	(1)	As of March 31, 2014 and December 31, 2013, we had open derivative contracts representing 32,865,750 barrels and 19,927,000 barrels, respectively, of crude oil and refined petroleum products. Of these open contracts, contracts representing 14,460,000 and 9,292,000 barrels were designated as hedging instruments as of March 31, 2014 and December 31, 2013, respectively.
	(2)	As of March 31, 2014 and December 31, 2013, $2.7 million and $2.6 million, respectively, of cash collateral has been netted with the derivative positions with each counterparty. Included in these amounts is $2.0 million of cash collateral associated with our interest rate derivatives as of both March 31, 2014 and December 31, 2013.
	Gains (losses) recognized associated with derivatives not designated as hedging instruments for the three months ended March 31, 2014 and 2013 are as follows (in millions):
				Three Months Ended March 31,
	Derivative Type	Income Statement Location		2014			2013
	OTC commodity swaps	Cost of goods sold		$	27.8		$	(4.0	)
	Interest rate derivatives	Interest expense		0.3			0.4
		Total		$	28.1		$	(3.6	)
	Gains on our derivatives designated as cash flow hedging instruments for the three months ended March 31, 2014 and 2013 are as follows (in millions):
			Three Months Ended March 31,
			2014			2013
	OTC commodity swaps:
	Gain recognized in OCI (effective portion)		$	29.5		$	—
	Gain reclassified from accumulated OCI into cost of goods sold on closed positions (effective portion)		$	1.7		$	0.6
	Gain recognized in cost of goods sold related to ineffectiveness		$	3.1		$	—

Organization_and_Basis_of_Pres2

Organization and Basis of Presentation (Details)	Mar. 31, 2014
Organization and Basis of Presentation [Abstract]	'
Percentage of shares owned by Delek Group	25.40%

Delek_Logistics_Partners_LP_Na

Delek Logistics Partners, LP Narrative (Details) (USD $)	3 Months Ended	0 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2014	Jul. 26, 2013	Feb. 10, 2014	Nov. 07, 2012
		Tyler Terminal and Tanks [Member]	El Dorado Terminal and Tanks [Member]	Common- Public [Member]
			bbl
Variable Interest Entity [Line Items]	'	'	'	'
Partners' Capital Account, Units, Sold in Public Offering (units)	'	'	'	9,200,000
Payments to acquire businesses, gross	'	$94.80	$95.90	'
Aggregate Shell Capacity	'	'	2,500,000	'
Number of Storage Tanks	'	'	158	'
Noncontrolling Interest, Ownership Percentage by Parent	60.00%	'	'	'
Ownership Interest in General Partner	96.60%	'	'	'
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest	2.00%	'	'	'
Limited Partners' Capital Account, Units Outstanding (units)	2,799,258	'	'	'
Other Ownership Interests, Units Outstanding (units)	11,999,258	'	'	'
General Partners' Capital Account, Units Outstanding (units)	492,893	'	'	'

Delek_Logistics_Partners_LP_Ba

Delek Logistics Partners LP, Balance Sheet (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013		Mar. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Assets	'	'		'	'
Cash and cash equivalents	$392.90	$400		$592.90	$601.70
Accounts receivable	297.1	250.5		'	'
Inventory	589.3	672.3		'	'
Other current assets	76.7	87.7		'	'
Net property, plant and equipment	1,379.50	1,278.50		'	'
Goodwill	72.7	72.7		'	'
Intangible assets, net	13	13.3		'	'
Other non-current assets	114.8	59.4		'	'
Total assets	2,936	2,834.40		'	'
Liabilities and Equity	'	'		'	'
Accounts payable	564.2	602		'	'
Accrued expenses and other current liabilities	123.8	114.1		'	'
Other non-current liabilities	19.2	18.9		'	'
Total liabilities and stockholders’ equity	2,936	2,834.40		'	'
Variable Interest Entity, Primary Beneficiary [Member]	'	'		'	'
Assets	'	'		'	'
Cash and cash equivalents	4.1	0.9	[1]	'	'
Accounts receivable	31.5	29	[1]	'	'
Accounts receivable from related parties	0.7	0	[1]	'	'
Inventory	14	17.5	[1]	'	'
Other current assets	0.2	0.3	[1]	'	'
Net property, plant and equipment	223.6	225.8	[1]	'	'
Goodwill	10.5	10.5	[1]	'	'
Intangible assets, net	12	12.3	[1]	'	'
Other non-current assets	4.7	5	[1]	'	'
Total assets	301.3	301.3	[1]	'	'
Liabilities and Equity	'	'		'	'
Accounts payable	24.6	26	[1]	'	'
Accounts payable to related parties	0	1.5	[1]	'	'
Accrued expenses and other current liabilities	11.2	12.2	[1]	'	'
Revolving credit facility	260.5	164.8	[1]	'	'
Asset Retirement Obligation	3.1	3.1	[1]	'	'
Deferred Tax Liabilities	0.3	0.3	[1]	'	'
Other non-current liabilities	5.7	6.2	[1]	'	'
Equity	-4.1	87.2	[1]	'	'
Total liabilities and stockholders’ equity	$301.30	$301.30	[1]	'	'
[1]	)These amounts have been restated to reflect the assets and liabilities acquired in the El Dorado Acquisition.

Acquisitions_Details

Acquisitions (Details) (Crossett Facility [Member], USD $)	0 Months Ended	3 Months Ended
In Millions, unless otherwise specified	Jan. 02, 2014	Mar. 31, 2014
		gal
Crossett Facility [Member]	'	'
Business Acquisition [Line Items]	'	'
Payments to acquire businesses, gross	$11.10	'
Yearly Production Capacity	'	10,000,000

Inventory_Carrying_ValueDetail

Inventory Carrying Value(Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Inventory [Line Items]	'	'
Total inventories	$589.30	$672.30
Retail [Member]	'	'
Inventory [Line Items]	'	'
Energy Related Inventory, Crude Oil, Products and Merchandise	16.1	19.2
Retail merchandise	26.7	26.9
Logistics [Member]	'	'
Inventory [Line Items]	'	'
Energy Related Inventory, Crude Oil, Products and Merchandise	14	17.5
Refining [Member]	'	'
Inventory [Line Items]	'	'
Refinery raw materials and supplies	277.3	250.9
Refinery work in process	67.9	58.6
Energy Related Inventory, Crude Oil, Products and Merchandise	$187.30	$299.20

Inventory_Narrative_Details

Inventory Narrative (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Inventory [Abstract]	'	'
Excess of Replacement or Current Costs over Stated LIFO Value	$47.50	$51.50
Effect of LIFO Inventory Liquidation on Income	$4.10	'

Crude_Oil_Supply_and_Inventory1

Crude Oil Supply and Inventory Purchase Agreement (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
	bbl
Crude Oil Supply and Inventory Purchase Agreement [Abstract]	'	'	'
Maximum Barrels Per Day Supplied under Supply and Offtake Agreeme (barrels per day)	100,000	'	'
J Aron Daily Purchase Settlement Receivable	$10	'	$18.20
Inventory financing expense	2.4	2.1	'
Barrels of Inventory Consigned to J Aron (barrels)	3,600,000	'	'
J Aron Liability for Consigned Inventory	339.5	'	'
J Aron Inventory Target Receivable(Payable)	$1.70	'	($4.60)

LongTerm_Obligations_and_Notes2

Long-Term Obligations and Notes Payable (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Debt Instrument [Line Items]	'	'
Debt and Capital Lease Obligations	$490	$410.30
Long-term Debt and Capital Lease Obligations, Current	36	33.7
Long-term Debt and Capital Lease Obligations	454	376.6
Promissory Notes [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt and Capital Lease Obligations	78	77.4
Capital Lease Obligations [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt and Capital Lease Obligations	0.5	0.6
Revolving Credit Facility [Member] | Line of Credit [Member] | MAPCO Revolver [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt and Capital Lease Obligations	51	67.5
Revolving Credit Facility [Member] | Line of Credit [Member] | DKL Revolver [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt and Capital Lease Obligations	260.5	164.8
Revolving Credit Facility [Member] | Line of Credit [Member] | Reliant Bank Revolver [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt and Capital Lease Obligations	10	10
Term loan facility [Member] | Notes Payable [Member] | Term loan facility [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt and Capital Lease Obligations	$90	$90

LongTerm_Obligations_and_Notes3

Long-Term Obligations and Notes Payable Lines of Credit Narrative (Details) (USD $)

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Dec. 31, 2013

Dec. 23, 2010

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 23, 2010

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Dec. 23, 2010

Mar. 31, 2014

Mar. 31, 2014

Dec. 23, 2010

Mar. 31, 2014

Mar. 31, 2014

Dec. 23, 2010

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

In Millions, unless otherwise specified

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility, Swing Line Loan [Member]

Revolving Credit Facility, Swing Line Loan [Member]

Letter of Credit [Member]

Letter of Credit [Member]

Letter of Credit [Member]

Letter of Credit [Member]

Letter of Credit [Member]

Letter of Credit [Member]

Base Rate [Member]

Base Rate [Member]

Base Rate [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

Canadian Dealer Offered Rate (CDOR) [Member]

Canadian Prime Rate [Member]

Wells ABL [Member]

Line of Credit [Member]

Line of Credit [Member]

Line of Credit [Member]

Line of Credit [Member]

Line of Credit [Member]

Line of Credit [Member]

Line of Credit [Member]

Line of Credit [Member]

Wells ABL [Member]

Line of Credit [Member]

Wells ABL [Member]

Line of Credit [Member]

Line of Credit [Member]

Line of Credit [Member]

Line of Credit [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

MAPCO Revolver [Member]

MAPCO Revolver [Member]

MAPCO Revolver [Member]

DKL Revolver [Member]

DKL Revolver [Member]

Wells ABL [Member]

Reliant Bank Revolver [Member]

Reliant Bank Revolver [Member]

MAPCO Revolver [Member]

MAPCO Revolver [Member]

MAPCO Revolver [Member]

DKL Revolver [Member]

Wells ABL [Member]

Line of Credit [Member]

Line of Credit [Member]

Line of Credit [Member]

Line of Credit [Member]

Line of Credit [Member]

Line of Credit [Member]

Line of Credit [Member]

Line of Credit [Member]

MAPCO Revolver [Member]

DKL Revolver [Member]

Wells ABL [Member]

MAPCO Revolver [Member]

DKL Revolver [Member]

Wells ABL [Member]

DKL Revolver [Member]

DKL Revolver [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Maximum Borrowing Capacity

'

'

$600

'

'

$200

$400

'

'

$10

'

$55

$10

'

$550

'

$50

'

'

'

'

'

'

'

'

'

'

Maximum Borrowing Capacity under Accordion Feature

'

'

875

'

'

275

450

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Borrowing Capacity under Previous Revolver

'

'

'

'

'

108

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding amount under previous term loan

'

'

'

'

'

165

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt and Capital Lease Obligations

490

410.3

'

51

67.5

'

260.5

164.8

'

10

10

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Letters of Credit Outstanding, Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

172.3

'

2.6

'

13.5

154.3

'

'

'

'

'

'

'

'

Debt Instrument, Description of Variable Rate Basis

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'base rate

'U.S. base rate

'base rate

'LIBOR

'LIBOR

'LIBOR

'CDOR

'Canadian prime rate

Debt, Weighted Average Interest Rate

'

'

'

3.70%

'

'

2.70%

'

4.50%

5.25%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Unused Capacity, Commitment Fee Percentage

'

'

'

0.50%

'

'

0.40%

'

0.38%

0.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Remaining Borrowing Capacity

'

'

'

146.4

'

'

126

'

199.5

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Delayed single draw term loan

'

'

70

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Periodic Payment, Principal

'

'

5.8

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Holdings Note Principal amount outstanding

'

'

'

'

'

'

$102

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Interest Rate, Stated Percentage

'

'

'

'

'

'

'

'

'

5.25%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

LongTerm_Obligations_and_Notes4

Long-Term Obligations and Notes Payable Promissory Notes Narrative (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Apr. 29, 2011	Dec. 31, 2013	Dec. 19, 2011	Mar. 31, 2014
In Millions, unless otherwise specified			Promissory Notes [Member]	Promissory Notes [Member]	Build to Suit Notes [Member]	Build to Suit Notes [Member]	Build to Suit Notes [Member]	Ergon Note [Member]	Ergon Note [Member]	Ergon Paline Note [Member]	Ergon Paline Note [Member]
					Notes Payable [Member]	Minimum [Member]	Maximum [Member]	Notes Payable [Member]	Notes Payable [Member]	Notes Payable [Member]	Notes Payable [Member]
					Promissory Notes [Member]	Notes Payable [Member]	Notes Payable [Member]	Promissory Notes [Member]	Promissory Notes [Member]	Promissory Notes [Member]	Promissory Notes [Member]
						Promissory Notes [Member]	Promissory Notes [Member]
Debt Instrument [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Debt Instrument, Face Amount	'	'	'	'	'	$1	$2.20	$50	'	$25	'
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum	'	'	'	'	5.00%	'	'	'	'	'	'
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum	'	'	'	'	6.40%	'	'	'	'	'	'
Debt and Capital Lease Obligations	490	410.3	78	77.4	31.7	'	'	'	40	'	6.3
Debt Instrument, Interest Rate, Stated Percentage	'	'	'	'	'	'	'	4.00%	'	6.00%	'
Debt Instrument, Periodic Payment, Principal	'	'	'	'	'	'	'	$10	'	$2.10	'

LongTerm_Obligations_and_Notes5

Long-Term Obligations and Notes Payable Term Loan Facility Narrative (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]	'	'
Debt and Capital Lease Obligations	$490	$410.30
Term loan facility [Member] | Notes Payable [Member] | Term loan facility [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt Instrument, Face Amount	90	'
Debt and Capital Lease Obligations	90	90
Debt Instrument, Periodic Payment, Principal	$4.50	'
Debt, Weighted Average Interest Rate	5.50%	'
London Interbank Offered Rate (LIBOR) [Member] | Term loan facility [Member] | Notes Payable [Member] | Term loan facility [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt Instrument, Description of Variable Rate Basis	'LIBOR	'
Reference Rate [Member] | Term loan facility [Member] | Notes Payable [Member] | Term loan facility [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt Instrument, Description of Variable Rate Basis	'Reference Rate	'
Interest Rate Floor [Member] | Term loan facility [Member] | Notes Payable [Member] | Term loan facility [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt Instrument, Description of Variable Rate Basis	'interest rate floor	'
Debt Instrument, Basis Spread on Variable Rate	5.50%	'

LongTerm_Obligations_and_Notes6

Long-Term Obligations and Notes Payable Interest Rate Derivatives Narrative (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Debt Instrument [Line Items]	'	'	'
Notional Amount of Interest Rate Derivatives	$205	'	'
Interest Rate Derivative Liabilities, at Fair Value	2.4	'	2.7
Derivative Instruments, Gain (Loss) Recognized in Income, Net	28.1	-3.6	'
Interest Expense [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Derivative Instruments, Gain (Loss) Recognized in Income, Net	$0.30	$0.40	'

Income_Taxes_Details

Income Taxes (Details) (USD $)	Mar. 31, 2014
In Millions, unless otherwise specified
Income Taxes [Abstract]	'
Unrecognized Tax Benefits	$0.30

Shareholders_Equity_Schedule_o

Shareholders' Equity Schedule of Changes in Stockholders' Equity (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'
Balance at December 31, 2013	$1,120.40	'
Net income	39.3	82.1
Unrealized gain on cash flow hedges, net of deferred income tax expense of $9.0 million	15.7	-0.4
Common stock dividends ($0.25 per share)	-14.9	'
Distribution to non-controlling interest	-3.9	'
Equity-based compensation expense	3.1	'
Income tax benefit of equity-based compensation expense	0.5	'
Taxes paid due to the net settlement of equity-based compensation	-3.3	'
Exercise of equity-based awards	0.1	'
Balance at March 31, 2014	1,157	'
Noncontrolling Interest [Member]	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'
Balance at December 31, 2013	185.4	'
Net income	5.6	'
Unrealized gain on cash flow hedges, net of deferred income tax expense of $9.0 million	0	'
Common stock dividends ($0.25 per share)	0	'
Distribution to non-controlling interest	-3.9	'
Equity-based compensation expense	0.3	'
Income tax benefit of equity-based compensation expense	0	'
Taxes paid due to the net settlement of equity-based compensation	0	'
Exercise of equity-based awards	0	'
Balance at March 31, 2014	187.4	'
Parent [Member]	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'
Balance at December 31, 2013	935	'
Net income	33.7	'
Unrealized gain on cash flow hedges, net of deferred income tax expense of $9.0 million	15.7	'
Common stock dividends ($0.25 per share)	-14.9	'
Distribution to non-controlling interest	0	'
Equity-based compensation expense	2.8	'
Income tax benefit of equity-based compensation expense	0.5	'
Taxes paid due to the net settlement of equity-based compensation	-3.3	'
Exercise of equity-based awards	0.1	'
Balance at March 31, 2014	$969.60	'

Shareholders_Equity_Schedule_o1

Shareholders' Equity Schedule of Changes in Stockholders' Equity (Parenthetical) (Details) (USD $)	0 Months Ended		3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 13, 2014	Feb. 25, 2014	Mar. 31, 2014	Mar. 31, 2013
Shareholders’ Equity [Abstract]	'	'	'	'
Net gain (loss) on derivative instruments, net of tax (expense) benefit of	'	'	$9	($0.20)
Common Stock, Dividends, Per Share, Declared (dollar per share)	$0.10	$0.15	$0.25	$0.20

Shareholders_Equity_Dividends_

Shareholders' Equity Dividends (Details) (USD $)	0 Months Ended		3 Months Ended
	Mar. 13, 2014	Feb. 25, 2014	Mar. 31, 2014	Mar. 31, 2013
Dividends [Abstract]	'	'	'	'
Common Stock, Dividends, Per Share, Declared (dollar per share)	$0.10	$0.15	$0.25	$0.20

Shareholders_Equity_Stock_Repu

Shareholders' Equity Stock Repurchase (Details) (USD $)	0 Months Ended	3 Months Ended
In Millions, except Share data in Thousands, unless otherwise specified	Mar. 13, 2014	Mar. 31, 2014
Stock Repurchase [Abstract]	'	'
Stock Repurchase Program, Authorized Amount	$50	'
Stock Repurchased During Period, Shares	'	0

Equity_Based_Compensation_Deta

Equity Based Compensation (Details) (USD $)	0 Months Ended		3 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 10, 2013	Mar. 10, 2013	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014
				Delek US 2006 Long-Term Incentive Plan [Member]	Delek US 2006 Long-Term Incentive Plan [Member]	Delek Logistics 2012 Long-Term Incentive Plan [Member]	Delek Logistics 2012 Long-Term Incentive Plan [Member]	GP Membership Interest Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'	'	'
Allocated Share-based Compensation Expense	'	'	'	$2.60	$2	$0.40	$0.40	$0.10
Allocated Share-based Compensation Expense, Net of Tax	'	'	'	1.7	1.3	0.3	0.3	0.1
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	'	'	'	23.3	'	5	'	'
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition (years)	'	'	'	'2 years 4 months 24 days	'	'3 years 8 months 12 days	'	'2 years 6 months 0 days
Stock Issued During Period, Shares, Share-based Compensation, Gross (shares)	'	'	'	80,182	214,756	'	'	'
Shares Paid for Tax Withholding for Share Based Compensation (shares)	'	'	'	58,152	158,632	'	'	'
Membership Interest in GP Granted to Employees	4.00%	1.40%	'	'	'	'	'	'
Membership Interest in GP Initial Vesting Percentage	'	'	0.50%	'	'	'	'	'
Membership Interest in GP Semi-Annual Vesting Percentage	'	'	0.25%	'	'	'	'	'
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options	'	'	$0.70	'	'	'	'	'

Earnings_Per_Share_Details

Earnings Per Share (Details)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share [Abstract]	'	'
Weighted average common shares outstanding	59,248,855	59,571,744
Dilutive effect of equity instruments (shares)	629,158	1,073,973
Weighted average common shares outstanding, assuming dilution	59,878,013	60,645,717
Outstanding common share equivalents excluded from diluted EPS	1,226,200	564,700

Segment_Data_Narrative_Details

Segment Data Narrative (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
	bbl
Segment Reporting Information [Line Items]	'	'
Refinery Throughput Capacity (bpd)	140,000	'
Intercompany fees and sales	$0	$0
Refining [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Intercompany fees and sales	107.2	54.5
Retail [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Number of Stores (stores)	361	'
Number of Stores, Dealer Locations (stores)	67	'
Intercompany fees and sales	0	0
Logistics [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Intercompany fees and sales	25.3	14.9
TENNESSEE | Retail [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Number of Stores (stores)	196	'
ALABAMA | Retail [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Number of Stores (stores)	90	'
GEORGIA | Retail [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Number of Stores (stores)	49	'
ARKANSAS | Retail [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Number of Stores (stores)	12	'
VIRGINIA | Retail [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Number of Stores (stores)	8	'
KENTUCKY | Retail [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Number of Stores (stores)	3	'
MISSISSIPPI | Retail [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Number of Stores (stores)	3	'
Refining Marketing Services [Member] | Logistics [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Intercompany fees and sales	3.6	3
Crude Transportation and Storage Fees [Member] | Logistics [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Intercompany fees and sales	$20.90	$11.90
Tyler Refinery [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Refinery Throughput Capacity (bpd)	60,000	'
El Dorado Refinery [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Refinery Throughput Capacity (bpd)	80,000	'

Segment_Data_Operating_Perform

Segment Data Operating Performance (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]	'	'	'
Net sales (excluding intercompany fees and sales)	$1,865.70	$2,259.90	'
Intercompany fees and sales	0	0	'
Cost of Goods Sold	1,640.40	1,972.20	'
Operating expenses	98.5	98.7	'
Segment Contribution Margin	126.8	189	'
General and administrative expenses	34.5	32.6	'
Depreciation and amortization	24.6	22	'
Operating income	67.7	134.4	'
Total assets	2,936	'	2,834.40
Capital spending (excluding business combinations)	114.3	28	'
Refining [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Net sales (excluding intercompany fees and sales)	1,255.60	1,615	'
Intercompany fees and sales	107.2	54.5	'
Cost of Goods Sold	1,232.20	1,436.30	'
Operating expenses	58	58.5	'
Segment Contribution Margin	72.6	174.7	'
Total assets	1,977.50	'	'
Capital spending (excluding business combinations)	103.2	12.9	'
Retail [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Net sales (excluding intercompany fees and sales)	431.6	448.8	'
Intercompany fees and sales	0	0	'
Cost of Goods Sold	393.5	409.3	'
Operating expenses	32.2	31.6	'
Segment Contribution Margin	5.9	7.9	'
Total assets	449.7	'	'
Capital spending (excluding business combinations)	6.6	5.4	'
Logistics [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Net sales (excluding intercompany fees and sales)	178.2	196	'
Intercompany fees and sales	25.3	14.9	'
Cost of Goods Sold	172.2	187.9	'
Operating expenses	9.3	9.1	'
Segment Contribution Margin	22	13.9	'
Total assets	301.3	'	'
Capital spending (excluding business combinations)	1	3.7	'
Corporate, other and eliminations [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Net sales (excluding intercompany fees and sales)	0.3	0.1	'
Intercompany fees and sales	-132.5	-69.4	'
Cost of Goods Sold	-157.5	-61.3	'
Operating expenses	-1	-0.5	'
Segment Contribution Margin	26.3	-7.5	'
Total assets	207.5	'	'
Capital spending (excluding business combinations)	$3.50	$6	'

Segment_Data_PPE_Details

Segment Data PP&E (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]	'	'
Property, Plant and Equipment, Gross	$1,807.70	$1,683.70
Less: accumulated depreciation	-428.2	-405.2
Property, plant and equipment, net	1,379.50	1,278.50
Depreciation expense for the three months ended March 31, 2014	24.3	'
Refining [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Property, Plant and Equipment, Gross	1,006.70	'
Less: accumulated depreciation	-204.8	'
Property, plant and equipment, net	801.9	'
Depreciation expense for the three months ended March 31, 2014	12.9	'
Retail [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Property, Plant and Equipment, Gross	486.9	'
Less: accumulated depreciation	-175.1	'
Property, plant and equipment, net	311.8	'
Depreciation expense for the three months ended March 31, 2014	7.1	'
Logistics [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Property, Plant and Equipment, Gross	266.2	'
Less: accumulated depreciation	-42.6	'
Property, plant and equipment, net	223.6	'
Depreciation expense for the three months ended March 31, 2014	3.2	'
Corporate, other and eliminations [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Property, Plant and Equipment, Gross	47.9	'
Less: accumulated depreciation	-5.7	'
Property, plant and equipment, net	42.2	'
Depreciation expense for the three months ended March 31, 2014	$1.10	'

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivatives assets	$67.70	$24
Commodity and interest rate derivatives liabilities	-23.2	-27.7
Net assets (liabilities), derivatives	44.5	-3.7
Collateral Already Posted, Aggregate Fair Value	2.7	2.6
Fair Value, Inputs, Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivatives assets	0	0
Commodity and interest rate derivatives liabilities	0	0
Net assets (liabilities), derivatives	0	0
Fair Value, Inputs, Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivatives assets	67.7	24
Commodity and interest rate derivatives liabilities	-23.2	-27.7
Net assets (liabilities), derivatives	44.5	-3.7
Fair Value, Inputs, Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivatives assets	0	0
Commodity and interest rate derivatives liabilities	0	0
Net assets (liabilities), derivatives	0	0
Commodity Contract [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivatives assets	67.6	23.9
Commodity and interest rate derivatives liabilities	-20.7	-24.9
Commodity Contract [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivatives assets	0	0
Commodity and interest rate derivatives liabilities	0	0
Commodity Contract [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivatives assets	67.6	23.9
Commodity and interest rate derivatives liabilities	-20.7	-2.8
Commodity Contract [Member] | Fair Value, Inputs, Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivatives assets	0	0
Commodity and interest rate derivatives liabilities	0	0
Interest Rate Contract [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivatives assets	0.1	0.1
Commodity and interest rate derivatives liabilities	-2.5	-2.8
Interest Rate Contract [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivatives assets	0	0
Commodity and interest rate derivatives liabilities	0	0
Interest Rate Contract [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivatives assets	0.1	0.1
Commodity and interest rate derivatives liabilities	-2.5	-24.9
Interest Rate Contract [Member] | Fair Value, Inputs, Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivatives assets	0	0
Commodity and interest rate derivatives liabilities	$0	$0

Derivative_Instruments_Derivat

Derivative Instruments Derivative Assets and Liabilities (Details) (USD $)	Mar. 31, 2014		Dec. 31, 2013
In Millions, unless otherwise specified
Derivatives, Fair Value [Line Items]	'		'
Derivative Asset, Fair Value, Gross Asset	$67.70		$24
Derivative Liability, Fair Value, Gross Liability	-23.2		-27.7
Derivative Asset, Fair Value, Amount Offset Against Collateral	20	[1]	22.6	[1]
Derivative Liability, Fair Value, Amount Offset Against Collateral	-22.7	[1]	-25.2	[1]
Total net fair value of derivative assets	47.7		1.4
Total net fair value of derivative liabilities	-0.5		-2.5
Collateral Already Posted, Aggregate Fair Value	2.7		2.6
Interest Rate Swap [Member]	'		'
Derivatives, Fair Value [Line Items]	'		'
Collateral Already Posted, Aggregate Fair Value	2		2
Not Designated as Hedging Instrument [Member]	'		'
Derivatives, Fair Value [Line Items]	'		'
Derivative, Nonmonetary Notional Amount (barrels)	32,865,750		19,927,000
Not Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Other Noncurrent Assets [Member]	'		'
Derivatives, Fair Value [Line Items]	'		'
Derivative Asset, Fair Value, Gross Asset	0.1		0.1
Derivative Liability, Fair Value, Gross Liability	0		0
Not Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Other Noncurrent Liabilities [Member]	'		'
Derivatives, Fair Value [Line Items]	'		'
Derivative Asset, Fair Value, Gross Asset	0		0
Derivative Liability, Fair Value, Gross Liability	-2.5		-2.8
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Other Current Assets [Member]	'		'
Derivatives, Fair Value [Line Items]	'		'
Derivative Asset, Fair Value, Gross Asset	47.5	[2]	4.4	[2]
Derivative Liability, Fair Value, Gross Liability	-16.7	[2]	-3.5	[2]
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Other Current Liabilities [Member]	'		'
Derivatives, Fair Value [Line Items]	'		'
Derivative Asset, Fair Value, Gross Asset	0	[2]	15	[2]
Derivative Liability, Fair Value, Gross Liability	0	[2]	-8.5	[2]
Designated as Hedging Instrument [Member]	'		'
Derivatives, Fair Value [Line Items]	'		'
Derivative, Nonmonetary Notional Amount (barrels)	14,460,000		9,292,000
Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Other Current Assets [Member]	'		'
Derivatives, Fair Value [Line Items]	'		'
Derivative Asset, Fair Value, Gross Asset	20.1	[2]	0	[2]
Derivative Liability, Fair Value, Gross Liability	-4	[2]	0	[2]
Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Other Current Liabilities [Member]	'		'
Derivatives, Fair Value [Line Items]	'		'
Derivative Asset, Fair Value, Gross Asset	0	[2]	4.5	[2]
Derivative Liability, Fair Value, Gross Liability	$0	[2]	($12.90)	[2]
[1]	As of March 31, 2014 and December 31, 2013, $2.7 million and $2.6 million, respectively, of cash collateral has been netted with the derivative positions with each counterparty. Included in these amounts is $2.0 million of cash collateral associated with our interest rate derivatives as of both March 31, 2014 and December 31, 2013.
[2]	As of March 31, 2014 and December 31, 2013, we had open derivative contracts representing 32,865,750 barrels and 19,927,000 barrels, respectively, of crude oil and refined petroleum products. Of these open contracts, contracts representing 14,460,000 and 9,292,000 barrels were designated as hedging instruments as of March 31, 2014 and December 31, 2013, respectively.

Derivative_Instruments_Derivat1

Derivative Instruments Derivatives Gains and Losses (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Derivative, Gain (Loss) on Derivative, Net	$28,100,000	($3,600,000)	'
Gain (Loss) from Components Excluded from Assessment of Cash Flow Hedge Effectiveness, Net	0	0	'
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	11,700,000	'	-4,000,000
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	'	0	'
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	14,300,000	'	'
Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net	0	'	'
Loss (gain) recognized in OCI (effective portion)	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gain recognized in OCI (effective portion)	29,500,000	0	'
Cost of Sales [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Gain reclassified from accumulated OCI into cost of goods sold on closed positions (effective portion)	1,700,000	600,000	'
Gain recognized in cost of goods sold related to ineffectiveness	3,100,000	0	'
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	1,100,000	400,000	'
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Cost of Sales [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Derivative, Gain (Loss) on Derivative, Net	27,800,000	-4,000,000	'
Not Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Interest Expense [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Derivative, Gain (Loss) on Derivative, Net	$300,000	$400,000	'

Commitments_and_Contingencies_1

Commitments and Contingencies Self-Insurance (Details) (USD $)	Mar. 31, 2014
In Millions, unless otherwise specified
Commitments and Contingencies Disclosure [Abstract]	'
Self insurance Workers' Comp Coverage Ceiling per accident	$1
Self Insurance General Liability Claims Coverage Ceiling per occurence	4
Self Insurance Auto Liabiity Coverage Ceiling per accident	$4

Commitments_and_Contingencies_2

Commitments and Contingencies Environmental Health and Safety (Details) (USD $)	Mar. 31, 2014
In Millions, unless otherwise specified
Commitments and Contingencies Disclosure [Abstract]	'
Accrual for Environmental Loss Contingencies	$9.90
Recorded Third-Party Environmental Recoveries Receivable	0.6
Recorded Third-Party Environmental Recoveries, Current	0.1
Recorded Third-Party Environmental Recoveries, Noncurrent	0.5
Accrued Environmental Loss Contingencies, Current	1
UST Related Remediation Liability	$0.10

Commitments_and_Contingencies_3

Commitments and Contingencies Magnolia Station Spill (Details) (Magnolia Station Spill [Member])	Apr. 02, 2013	Mar. 09, 2013
		bbl
Magnolia Station Spill [Member]	'	'
Loss Contingencies [Line Items]	'	'
Barrels of crude oil released	'	5,900
Barrels of crude oil not contained	'	2,650
Percentage of crude oil recovered (greater than)	99.00%	'

Commitments_and_Contingencies_4

Commitments and Contingencies Letters of Credit (Details) (Letter of Credit [Member], USD $)	Mar. 31, 2014
Letter of Credit [Member]	'
Line of Credit Facility [Line Items]	'
Letters of Credit Outstanding, Amount	$172,300,000
Line of Credit Facility, Amount Outstanding	$0

Subsequent_Events_Dividend_Dec

Subsequent Events Dividend Declaration (Details) (USD $)	0 Months Ended		3 Months Ended		0 Months Ended
	Mar. 13, 2014	Feb. 25, 2014	Mar. 31, 2014	Mar. 31, 2013	6-May-14
					Subsequent Event [Member]
Subsequent Event [Line Items]	'	'	'	'	'
Dividends declared per common share outstanding	$0.10	$0.15	$0.25	$0.20	$0.15

Subsequent_Events_Haynesville_

Subsequent Events Haynesville Spill (Details) (Subsequent Event [Member])	Apr. 25, 2014
	bbl
Minimum [Member]	'
Subsequent Event [Line Items]	'
Barrels of crude oil released	300
Maximum [Member]	'
Subsequent Event [Line Items]	'
Barrels of crude oil released	400

Subsequent_Events_MAPCO_Refina

Subsequent Events MAPCO Refinancing (Details) (Line of Credit [Member], MAPCO Revolver [Member], USD $)	Dec. 23, 2010	6-May-14	Dec. 23, 2010	6-May-14	Dec. 23, 2010	6-May-14
In Millions, unless otherwise specified	Revolving Credit Facility [Member]	Revolving Credit Facility [Member]	Revolving Credit Facility, Swing Line Loan [Member]	Revolving Credit Facility, Swing Line Loan [Member]	Letter of Credit [Member]	Letter of Credit [Member]
		Subsequent Event [Member]		Subsequent Event [Member]		Subsequent Event [Member]
Subsequent Event [Line Items]	'	'	'	'	'	'
Delek Limited Guarantee	'	$50	'	'	'	'
Line of Credit Facility, Maximum Borrowing Capacity	200	160	10	10	50	40
Maximum Borrowing Capacity under Accordion Feature	$275	$50	'	'	'	'