Total costs accrued as of the balance sheet date for environmental loss contingencies.

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Amount of expense for newly incurred environmental loss contingencies. Includes, but is not limited to, remediation expense and interest accretion.

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Commitments and Contingencies - Crude Oil Releases (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies, period increase (decrease)	$ 0.0	$ 0.1
Accrual for Environmental Loss Contingencies, Charges to Expense for New Losses	0.2		$ 7.1
Operating Expense [Member]
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies	0.3
Delek US \| Omnibus Agreement \| Delek US and affiliates
Loss Contingencies [Line Items]
Reimbursement for costs incurred for asset failures		3.4
Delek US \| Omnibus Agreement \| Operating Expense [Member] \| Delek US and affiliates
Loss Contingencies [Line Items]
Reimbursement for costs incurred for asset failures	$ 0.0	$ 3.5