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Acquisitions - Narrative (Details) - Big Spring Pipeline [Member] $ in Millions	Sep. 15, 2017 USD ($) mi
Schedule of Asset Acquisitions, by Acquisition [Line Items]
Length of pipeline (in miles) | mi	40
Consideration transferred | $	$ 9.0

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- Definition

Asset Acquisition, Consideration Transferred

+ References

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- Definition

Length of Pipeline

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- Definition

[Line Items] for Schedule of Asset Acquisitions, by Acquisition [Table]

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No definition available.

+ Details

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- Details

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Period Type: