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Commitments and Contingencies Contracts and Agreements (Details)	12 Months Ended
	Dec. 31, 2015 bbl / pure
Abilene Contract [Member] | Inventories [Member]
Long-term Purchase Commitment [Line Items]
Maximum Purchases under Supply Contract	20,350

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- Definition

Maximum Purchases under Supply Contract

+ References

No definition available.

+ Details

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- Definition

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.

+ References

No definition available.

+ Details

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- Details

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- Details

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