Long-Term Obligations - Outstanding Borrowings Schedule (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Debt Instrument [Line Items]
Long-term debt gross	$ 3,248.1	$ 3,283.3
Less: Unamortized discount and premium and deferred financing costs	58.4	50.2
Total debt, net of unamortized discount and premium and deferred financing costs	3,189.7	3,233.1
Less: Current portion of long-term debt	8.5	9.5
Long-term debt, net of current portion	3,181.2	3,223.6
Secured Debt \| Delek Term Loan Credit Facility
Debt Instrument [Line Items]
Long-term debt gross	850.0	921.5
Senior Notes \| Delek Logistics 2028 Notes
Debt Instrument [Line Items]
Long-term debt gross	0.0	400.0
Senior Notes \| Delek Logistics 2029 Notes
Debt Instrument [Line Items]
Long-term debt gross	650.0	1,050.0
Senior Notes \| Delek Logistics 2033 Notes
Debt Instrument [Line Items]
Long-term debt gross	700.0	700.0
Senior Notes \| Delek Logistics 2034 Notes
Debt Instrument [Line Items]
Long-term debt gross	800.0	0.0
Revolving Credit Facility \| Line of Credit \| Delek Logistics Revolving Facility
Debt Instrument [Line Items]
Long-term debt gross	$ 248.1	$ 211.8

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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