Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Numerator for EPS - continuing operations
Net income (loss)	$ 14.8	$ (62.7)
Less: attributed to non-controlling interest	8.2	7.3
Numerator for basic and diluted EPS attributable to Delek	$ 6.6	$ (70.0)
Denominator:
Weighted Average Number of Shares Outstanding( denominatior for basic EPS) (in shares)	73,236,274	73,803,772
Dilutive effect of stock-based awards	412,992	0
Weighted average common shares outstanding, assuming dilution (in shares)	73,649,266	73,803,772
EPS:
Basic income (loss ) per share (USD per Share)	$ 0.09	$ (0.95)	[1]
Diluted income (loss) per share (USD per share)	$ 0.09	$ (0.95)	[1]
Stock Compensation Plan, Excluding Loss
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	3,088,678	2,733,056
Stock Compensation Plan, Loss
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	634,006
Share-based Payment Arrangement
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	3,088,678	3,367,062

[1] Adjusted to reflect the retrospective change in accounting policy from LIFO to FIFO for certain inventories. See Note 6 for further discussion.