Selected Quarterly Financial Data (Unaudited) (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
Quarterly Financial Information Disclosure [Abstract]
Net revenues	$ 2,373.7	$ 3,042.4	$ 3,308.1	$ 3,128.0	$ 3,942.1	$ 4,628.8	$ 4,074.4	$ 3,821.9	$ 11,852.2	$ 16,467.2	$ 19,801.0
Operating income (loss)	(403.4)	(121.9)	4.6	29.2	(143.9)	212.1	37.6	138.9	(491.5)	244.7	457.5
Net income (loss) 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
Net income (loss)	(402.1)	(67.5)	(26.1)	(25.2)	(160.1)	136.1	(1.5)	72.2	(520.9)	46.7	290.5
Net loss attributable to Delek	$ (413.8)	$ (76.8)	$ (37.2)	$ (32.6)	$ (164.9)	$ 128.7	$ (8.3)	$ 64.3	$ (560.4)	$ 19.8	$ 257.1
Basic income (loss) per share 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
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