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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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Amount of distribution received from equity method investee for return of investment, classified as investing activities. Excludes distribution for return on investment, classified as operating activities.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Equity Method Investments (Details) $ in Millions		3 Months Ended		6 Months Ended
Equity Method Investments (Details) $ in Millions	Jul. 30, 2019 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) joint_venture	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)	May 31, 2019 USD ($)	May 14, 2015
Schedule of Equity Method Investments [Line Items]
Equity method investments		$ 367.3		$ 367.3		$ 407.3
Distribution from equity method investments				71.0	$ 0.8
Payments to Acquire Equity Method Investments				29.5	136.4
Income from equity method investment		10.7	$ 9.3	15.8	11.9
Red River Pipeline Company LLC [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investments		142.0		142.0		131.0	$ 124.7
Equity method investment, ownership percentage (as percent)							33.00%
Red River Expansion [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investments							$ 3.5
Payments to Acquire Equity Method Investments				10.5
Wink To Webster Pipeline LLC
Schedule of Equity Method Investments [Line Items]
Equity method investments		73.0		73.0		125.3
Distribution from equity method investments				69.3
Equity method investment, ownership percentage (as percent)								15.00%
Payments to Acquire Equity Method Investments				18.9
Income from equity method investment		(0.9)		(2.0)
Red River
Schedule of Equity Method Investments [Line Items]
Income from equity method investment		$ 2.9		$ 4.7
Joint Ventures \| Delek US Holdings, Inc.
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage (as percent)		50.00%		50.00%
Joint Ventures \| Delek Logistics
Schedule of Equity Method Investments [Line Items]
Equity method investments		$ 113.3		$ 113.3		116.0
Income from equity method investment		3.5	2.2	$ 7.3	4.1
Number of joint ventures \| joint_venture				2
Joint Ventures \| Delek Renewables, LLC
Schedule of Equity Method Investments [Line Items]
Equity method investments		3.7		$ 3.7		4.3
Joint Ventures \| Delek US Holdings, Inc.
Schedule of Equity Method Investments [Line Items]
Equity method investments		35.3		35.3		$ 30.7
Income from equity method investment		$ 5.0	$ 4.7	$ 5.5	$ 5.2
CP LLC [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage (as percent)		50.00%		50.00%
Rangeland Rio [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage (as percent)		33.00%		33.00%
Minimum \| Wink To Webster Pipeline LLC
Schedule of Equity Method Investments [Line Items]
Payments to Acquire Equity Method Investments	$ 340.0
Expected Period Of Construction	2 years
Maximum \| Wink To Webster Pipeline LLC
Schedule of Equity Method Investments [Line Items]
Payments to Acquire Equity Method Investments	$ 380.0
Expected Period Of Construction	3 years