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Commitments and Contingencies Crude Oil Releases (Details) $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Nov. 30, 2018 bbl	Mar. 15, 2018 bbl	Feb. 28, 2018 bbl	Mar. 31, 2013 bbl
Loss Contingencies [Line Items]
Expense recorded, net of total reimbursable costs	$ 0.4
Smackover Release
Loss Contingencies [Line Items]
Barrels of crude oil released \| bbl				20
El Dorado Clean Harbors
Loss Contingencies [Line Items]
Barrels of crude oil released \| bbl					10
El Dorado February 2018 Release
Loss Contingencies [Line Items]
Barrels of crude oil released \| bbl						50
SALA Gathering System February 2018 Release - First
Loss Contingencies [Line Items]
Barrels of crude oil released \| bbl						250
Magnolia Station Spill
Loss Contingencies [Line Items]
Barrels of crude oil released \| bbl							5,900
Operating and maintenance expenses \| Smackover Release
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies	1.5
Operating and maintenance expenses \| Norphlet Release
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies	0.5
Delek US \| Omnibus Agreement \| Delek
Loss Contingencies [Line Items]
Recovery of direct costs	9.8
Delek US \| Operating and maintenance expenses \| Omnibus Agreement \| Delek
Loss Contingencies [Line Items]
Recovery of direct costs	8.2	$ 0.3	$ 1.2
Other Current Liabilities \| Magnolia Station Spill \| Magnolia Station Spill
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies	$ 2.2