Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net income (loss)	$ 46.7	$ 290.5	$ (95.3)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	351.6	287.0	264.6
Non-cash lease expense	61.9	62.6	60.6
Deferred income taxes	(1.6)	61.6	(38.9)
Asset impairment	37.9	0.0	0.0
Income from equity method investments	(86.2)	(57.7)	(18.3)
Dividends from equity method investments	61.0	32.3	29.2
Non-cash lower of cost or market/net realizable value adjustment	0.4	1.9	8.3
Equity-based compensation expense	27.5	29.1	24.6
Other	4.8	14.9	(11.2)
Changes in assets and liabilities:
Accounts receivable	460.0	(428.9)	(253.3)
Inventories and other current assets	557.9	(254.4)	(468.6)
Fair value of derivatives	4.0	(4.6)	39.6
Accounts payable and other current liabilities	(303.3)	298.7	702.5
Obligation under Inventory Intermediation Agreements	(192.1)	102.3	139.8
Non-current assets and liabilities, net	(16.9)	(10.0)	(12.2)
Net cash provided by operating activities	1,013.6	425.3	371.4
Cash flows from investing activities:
Acquisition of 3 Bear	0.0	(625.6)	0.0
Equity method investment contributions	0.0	(0.1)	(1.7)
Distributions from equity method investments	14.9	9.9	10.3
Purchases of property, plant and equipment	(419.6)	(311.4)	(222.2)
Purchase of equity securities	(11.9)	0.0	0.0
Purchases of intangible assets	(4.3)	(5.6)	(1.0)
Proceeds from sale of property, plant and equipment	2.6	1.2	11.9
Insurance proceeds	10.3	0.0	7.0
Contract termination recoveries of capital expenditures	0.0	0.0	17.3
Net cash used in investing activities	(408.0)	(931.6)	(178.4)
Cash flows from financing activities:
Proceeds from long-term revolvers	3,545.8	3,385.3	1,339.3
Payments on long-term revolvers	(3,980.8)	(2,472.8)	(1,827.9)
Proceeds from term debt	0.0	1,250.0	400.0
Payments on term debt	(28.2)	(1,289.1)	(43.4)
Proceeds from product and other financing agreements	1,187.3	994.6	916.1
Repayments of product and other financing agreements	(1,212.7)	(1,006.9)	(877.6)
Proceeds from Inventory Intermediation Agreement	32.2	538.8	0.0
Proceeds from termination of Supply & Offtake Obligation	25.8	(586.9)	0.0
Taxes paid due to the net settlement of equity-based compensation	(5.2)	(6.5)	(4.2)
Repurchase of common stock	(85.4)	(129.6)	0.0
Distribution to non-controlling interest	(38.6)	(36.0)	(32.4)
Proceeds from sale of Delek Logistics common limited partner units	0.0	16.4	2.1
Proceeds from issuance of Delek Logistic common limited partner units, net	0.0	3.1	0.0
Purchase of Delek common stock from IEP Energy Holding LLC	0.0	(64.0)	0.0
Dividends paid	(60.3)	(42.8)	0.0
Financing commitment cancellation proceeds	0.0	0.0	10.2
Deferred financing costs paid	(4.6)	(62.5)	(6.2)
Net cash (used in) provided by financing activities	(624.7)	491.1	(124.0)
Net (decrease) increase in cash and cash equivalents	(19.1)	(15.2)	69.0
Cash and cash equivalents at the beginning of the period	841.3	856.5	787.5
Cash and cash equivalents at the end of the period	822.2	841.3	856.5
Cash paid during the period for:
Interest, net of capitalized interest of $5.5 million, $2.1 million and $0.9 million in the 2023, 2022 and 2021 periods, respectively	323.5	186.7	125.3
Income taxes	10.8	27.6	4.2
Non-cash investing activities:
(Decrease) increase in accrued capital expenditures	(30.3)	31.8	4.9
Non-cash financing activities:
Non-cash lease liability arising from obtaining right-of-use assets during the period	$ 57.1	$ 28.6	$ 102.8