Long-Term Obligations and Notes Payable - Debt Maturity Schedule (Details) $ in Millions	Dec. 31, 2020 USD ($)
Debt Instrument [Line Items]
2021	$ 33.4
2022	102.2
2023	759.6
2024	13.0
2025	1,471.0
Thereafter	0.0
Total	2,379.2
Revolving Credit Facility
Debt Instrument [Line Items]
2021	0.0
2022	0.0
2023	0.0
2024	0.0
2025	0.0
Thereafter	0.0
Total	0.0
Term Loan Credit Facility
Debt Instrument [Line Items]
2021	13.0
2022	13.0
2023	13.0
2024	13.0
2025	1,221.0
Thereafter	0.0
Total	1,273.0
Hapoalim Term Loan
Debt Instrument [Line Items]
2021	0.4
2022	39.2
2023	0.0
2024	0.0
2025	0.0
Thereafter	0.0
Total	39.6
Delek Logistics Credit Facility
Debt Instrument [Line Items]
2021	0.0
2022	0.0
2023	746.6
2024	0.0
2025	0.0
Thereafter	0.0
Total	746.6
Delek Logistics Notes
Debt Instrument [Line Items]
2021	0.0
2022	0.0
2023	0.0
2024	0.0
2025	250.0
Thereafter	0.0
Total	250.0
Reliant Bank Revolver
Debt Instrument [Line Items]
2021	0.0
2022	50.0
2023	0.0
2024	0.0
2025	0.0
Thereafter	0.0
Total	50.0
Promissory Notes
Debt Instrument [Line Items]
2021	20.0
2022	0.0
2023	0.0
2024	0.0
2025	0.0
Thereafter	0.0
Total	$ 20.0

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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