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Related Party Transactions - Omnibus Agreement (Details) - Omnibus Agreement - Delek - USD ($) $ in Millions		12 Months Ended
	Mar. 01, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Obligation to pay annual fee	$ 3.9			$ 3.7
Delek US
Related Party Transaction [Line Items]
Due from related parties		$ 1.6
Recovery of direct costs		4.8	$ 9.8
Operating and maintenance expenses | Delek US
Related Party Transaction [Line Items]
Recovery of direct costs		6.3	8.2	0.3
Other Noncurrent Liabilities | Delek US
Related Party Transaction [Line Items]
Reimbursement of capital expenditures by Delek Holdings		$ 3.7	$ 5.0	$ 4.3

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