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Acquisition of Ozark Pipeline (Details) bbl / d in Thousands, $ in Millions		3 Months Ended
	Mar. 01, 2017 USD ($) bbl / d in mi	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)
Business Acquisition [Line Items]
Additions to property, plant and equipment		$ (455)	$ (280)
Ozark Pipeline [Member]
Business Acquisition [Line Items]
Additions to property, plant and equipment	$ (219)
Pipeline length | mi	433
Pipeline diameter | in	22
Pipeline barrels capable of transportation | bbl / d	230

X

- Definition

Pipeline Barrels Handled

+ References

No definition available.

+ Details

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X

- Definition

Pipeline diameter

+ References

No definition available.

+ Details

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X

- Definition

Pipeline length

+ References

No definition available.

+ Details

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X

- 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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X

- Definition

The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585

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X

- Details

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