Earnings (Loss) Per Share - Schedule of EPS (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021		Dec. 31, 2020
Numerator for EPS - continuing operations
Net income (loss)	$ (109.7)	$ 16.8	$ 368.6	$ 14.8	$ (5.1)	$ 20.6	$ (48.1)	$ (62.7)	$ 290.5	$ (95.3)		$ (573.8)
Less: Income attributed to non-controlling interest									33.4	33.0		37.6
Numerator for basic and diluted EPS attributable to Delek									$ 257.1	$ (128.3)		$ (611.4)
Denominator:
Weighted average common shares outstanding (denominator for basic EPS) (in shares)									70,789,458	73,984,104	[1]	73,598,389	[1]
Dilutive effect of stock-based awards (in shares)									726,903	0		0
Weighted average common shares outstanding, assuming dilution (denominator for diluted EPS) (in shares)									71,516,361	73,984,104	[1]	73,598,389	[1]
EPS:
Basic income (loss) per share (in dollars per share)	$ (1.73)	$ 0.11	$ 5.11	$ 0.09	$ (0.18)	$ 0.16	$ (0.77)	$ (0.95)	$ 3.63	$ (1.73)	[1]	$ (8.31)	[1]
Diluted income (loss) per share (in dollars per share)	$ (1.73)	$ 0.10	$ 5.05	$ 0.09	$ (0.18)	$ 0.16	$ (0.77)	$ (0.95)	$ 3.59	$ (1.73)	[1]	$ (8.31)	[1]
Antidilutive stock-based compensation (because average share price is less than exercise price)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)									2,299,660	2,988,718		3,616,690
Antidilutive due to loss
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)									0	598,775		466,254
Total antidilutive stock-based compensation
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)									2,299,660	3,587,493		4,082,944

[1] Adjusted to reflect the retrospective change in accounting policy from LIFO to FIFO for certain inventories. See Note 8 for further discussion.