Earnings (Loss) Per Share - Schedule of EPS (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Numerator for EPS - continuing operations
Net (loss) income from continuing operations	$ (401.1)	$ (134.8)	$ (33.8)	$ (28.4)	$ (163.3)	$ 125.6	$ (12.2)	$ 69.5	$ (598.1)	$ 19.6	$ 265.4
Less: Income from continuing operations attributed to non-controlling interests									39.5	26.9	33.4
Numerator for basic and diluted EPS from continuing operations attributable to Delek									(637.6)	(7.3)	232.0
Numerator for EPS - discontinued operations
Income from discontinued operations, including gain on sale of discontinued operations									105.9	35.2	32.6
Less: Income tax expense									28.7	8.1	7.5
Income from discontinued operations, net of tax									$ 77.2	$ 27.1	$ 25.1
Denominator:
Weighted average common shares outstanding (denominator for basic EPS) (in shares)									63,882,219	65,406,089	70,789,458
Dilutive effect of stock-based awards (in shares)									0	0	726,903
Weighted average common shares outstanding, assuming dilution (denominator for diluted EPS) (in shares)									63,882,219	65,406,089	71,516,361
Basic (loss) income per share:
(Loss) income from continuing operations (in dollars per share)	$ (6.53)	$ (2.25)	$ (0.70)	$ (0.56)	$ (2.62)	$ 1.82	$ (0.29)	$ 0.92	$ (9.98)	$ (0.11)	$ 3.28
Income from discontinued operations (in dollars per share)									1.21	0.41	0.35
Total basic (loss) income per share (in dollars per share)									(8.77)	0.30	3.63
Diluted (loss) income per share:
Diluted income (loss) per share from continuing operations (in dollars per share)	$ (6.53)	$ (2.25)	$ (0.70)	$ (0.56)	$ (2.62)	$ 1.81	$ (0.29)	$ 0.91	(9.98)	(0.11)	3.24
Income from discontinued operations (in dollars per share)									1.21	0.41	0.35
Total diluted (loss) income per share (in dollars per share)									$ (8.77)	$ 0.30	$ 3.59
Antidilutive stock-based compensation (because average share price is less than exercise price)
Diluted (loss) income per share:
Antidilutive securities excluded from computation of earnings per share (in shares)									2,116,047	1,718,880	2,299,660
Antidilutive due to loss
Diluted (loss) income per share:
Antidilutive securities excluded from computation of earnings per share (in shares)									467,499	569,212	0
Total antidilutive stock-based compensation
Diluted (loss) income per share:
Antidilutive securities excluded from computation of earnings per share (in shares)									2,583,546	2,288,092	2,299,660