Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings (Deficit)	Treasury Shares	Non-Controlling Interest in Subsidiaries
Beginning balance (in shares) at Dec. 31, 2024		80,127,994
Beginning balance at Dec. 31, 2024	$ 575.2	$ 0.8	$ 1,215.9	$ (4.1)	$ (205.7)	$ (694.1)	$ 262.4
Beginning balance (in shares) at Dec. 31, 2024						(17,575,527)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(158.5)				(172.7)		14.2
Common stock dividends	(15.9)				(15.9)
Equity-based compensation expense	6.9		6.6				0.3
Distributions to non-controlling interests	(21.6)						(21.6)
Equity attributable to issuance of Delek Logistics common units for the Gravity Acquisition, net of tax	76.3		55.4				20.9
Taxes paid due to the net settlement of equity-based compensation	(0.7)		(0.4)				(0.3)
Repurchase of common stock (in shares)		(2,009,420)
Repurchase of common stock	(31.5)		(30.6)		(0.9)
Exercise of equity-based awards (in shares)		61,150
Other (in shares)		28,299
Other	(0.8)		1.3		(0.2)		(1.9)
Ending balance (in shares) at Mar. 31, 2025		78,208,023
Ending balance at Mar. 31, 2025	429.4	$ 0.8	1,248.2	(4.1)	(395.4)	$ (694.1)	274.0
Ending balance (in shares) at Mar. 31, 2025						(17,575,527)
Beginning balance (in shares) at Dec. 31, 2025		77,357,447
Beginning balance at Dec. 31, 2025	$ 547.3	$ 0.8	1,290.9	0.0	(311.1)	$ (694.1)	260.8
Beginning balance (in shares) at Dec. 31, 2025	(17,575,527)					(17,575,527)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ (190.9)				(201.3)		10.4
Common stock dividends	(15.6)				(15.6)
Equity-based compensation expense	7.4		6.7				0.7
Distributions to non-controlling interests	(22.1)						(22.1)
Taxes paid due to the net settlement of equity-based compensation	(25.1)		(24.8)				(0.3)
Repurchase of common stock (in shares)		0
Exercise of equity-based awards (in shares)		1,416,783
Other (in shares)		19,633
Other	1.0		1.6		(0.6)		0.0
Ending balance (in shares) at Mar. 31, 2026		78,793,863
Ending balance at Mar. 31, 2026	$ 302.0	$ 0.8	$ 1,274.4	$ 0.0	$ (528.6)	$ (694.1)	$ 249.5
Ending balance (in shares) at Mar. 31, 2026	(17,575,527)					(17,575,527)