Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Maximum contractual interest rate for funds borrowed, under the debt agreement.

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Minimum contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of the required periodic payments applied to principal.

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Amount of payment greater than the preceding installment payments to be paid at final maturity date of debt.

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The cash outflow from the repayment of long-term borrowing where a lender is placed in a lien position behind debt having a higher priority of repayment (senior) in case of liquidation of the entity's assets before its maturity.

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Long-Term Obligations and Notes Payable Promissory Notes Narrative (Details) - USD ($) $ in Millions				12 Months Ended
	Oct. 22, 2015	May. 14, 2015	Apr. 29, 2011	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Debt and Capital Lease Obligations				$ 975.7	$ 587.3
Notes Payable, Other Payables [Member] \| Ergon Note [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount			$ 50.0
Debt and Capital Lease Obligations				$ 20.0
Debt Instrument, Periodic Payment, Principal			$ 10.0
Debt Instrument, Interest Rate, Stated Percentage			4.00%
Notes Payable, Other Payables [Member] \| Build to Suit Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum				5.00%
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum				6.38%
Debt and Capital Lease Obligations				$ 51.7
Minimum [Member] \| Notes Payable, Other Payables [Member] \| Build to Suit Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount				1.0
Maximum [Member] \| Notes Payable, Other Payables [Member] \| Build to Suit Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount				2.2
Alon USA [Member] \| Loans Payable [Member] \| Unsecured Promissory Note, Alon [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 145.0
Debt and Capital Lease Obligations				$ 120.0
Debt Instrument, Periodic Payment, Principal		$ 25.0
Debt Instrument, Interest Rate, Stated Percentage		5.50%
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid		$ 20.0
Early Repayment of Subordinated Debt	$ 25.0