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Commitments and Contingencies Crude Oil Releases (Details) $ in Millions	9 Months Ended
	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($)	Apr. 28, 2015 bbl
Haynesville Crude Oil Release [Member]
Loss Contingencies [Line Items]
Environmental Remediation Expense	$ 1.0
Accrual for Environmental Loss Contingencies		$ 0.2
Fouke Junction Crude Oil Release [Member]
Loss Contingencies [Line Items]
Crude oil released (barrels) | bbl			130
Magnolia Station Spill [Member]
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies		$ 1.0

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Barrels of crude oil released

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

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