Equity-Based Compensation - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	May 03, 2023	May 02, 2023
Equity-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise of equity-based awards (in shares)	48,154	53,522	409,993	389,293
Common Stock
Equity-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in Shares)					17,010,000	2,015,000
Delek US 2006 and 2016 Long-Term Incentive Plan
Equity-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 47.5		$ 47.5
Unrecognized compensation cost, period for recognition (years)			1 year 7 months 6 days
Delek US 2006 and 2016 and Alon USA Energy 2005 Long-Term Incentive Plan
Equity-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares paid for tax withholding for share based compensation (in shares)	59,836	50,521	205,944	318,684
General and Administrative Expense | Delek US 2006 and 2016 Long-Term Incentive Plan
Equity-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	$ 7.2	$ 7.3	$ 18.0	$ 19.1