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

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- Definition

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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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Long-Term Obligations and Notes Payable Promissory Notes Narrative (Details) - USD ($)	May 14, 2015	Apr. 29, 2011	Dec. 31, 2018	Dec. 31, 2017	Dec. 22, 2015
Debt Instrument [Line Items]
Long-term debt			$ 1,783,300,000	$ 1,465,600,000
Notes Payable, Other Payables \| Ergon Note
Debt Instrument [Line Items]
Debt instrument, face amount		$ 50,000,000.0
Interest rate, stated percentage		4.00%
Periodic payment, principal		$ 10,000,000.0
Alon USA Energy, Inc. \| Loans Payable \| Unsecured Promissory Note, Alon
Debt Instrument [Line Items]
Debt instrument, face amount	$ 145,000,000.0				$ 120,000,000.0
Interest rate, stated percentage	5.50%
Periodic payment, principal	$ 25,000,000.0
Periodic payment terms, balloon payment to be paid	$ 20,000,000.0
Long-term debt			$ 70,000,000.0