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The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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- Definition

The cash outflow to purchase long lived physical asset for use in the normal oil and gas operations and to purchase mineral interests in oil and gas properties not intended for resale.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
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The liability due as of the balance sheet date for leasebacks accounted for using the deposit method.

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

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-Publisher FASB
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- Definition

Term of the entity's agreement renewal option that may be requested.

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Represents the number of times an entity may request to renew or extend the term of an agreement or contract.

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Pipeline Capacity

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Terminal Storage Capacity

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Terminalling Agreement, Initial Term

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Undivided Ownership Interest in Assets Percentage

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Commitments and Contingencies (Details) $ in Millions	6 Months Ended		10 Months Ended	17 Months Ended	22 Months Ended	28 Months Ended
Commitments and Contingencies (Details) $ in Millions	Jun. 30, 2018 USD ($) bbl / d renewal MBbls	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) bbl / d renewal MBbls	Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Jan. 01, 2020 USD ($)	Dec. 31, 2017 USD ($)
Commitments and Contingencies (Textual)
MVP Terminal construction costs	$ 41,266		$ 41,266				$ 40,010
Contributions to MVP	119	$ 222
Cost of undivided interest in pipeline	$ 145	$ 72
Terminalling Agreement [Member] \| MVP Terminalling, LLC (MVP) [Member]
Commitments and Contingencies (Textual)
Initial term of terminal agreement	12 years
Number of available automatic renewals \| renewal	2		2
Automatic renewal term of terminalling agreement	5 years
MVP Terminal [Member]
Commitments and Contingencies (Textual)
Contributions to MVP	$ 104		$ 185
MVP Terminal [Member] \| Expected [Member]
Commitments and Contingencies (Textual)
Contributions to MVP						$ 420
MVP Terminal [Member] \| Magellan Midstream Partners LP (Magellan) [Member]
Commitments and Contingencies (Textual)
Long-term liability recorded	186		186
MVP Terminal [Member] \| Construction in Progress [Member]
Commitments and Contingencies (Textual)
MVP Terminal construction costs	$ 370		$ 370
MVP Terminal [Member] \| Minimum [Member] \| Construction in Progress [Member] \| Expected [Member]
Commitments and Contingencies (Textual)
MVP Terminal construction costs						840
MVP Terminal [Member] \| Maximum [Member] \| Construction in Progress [Member] \| Expected [Member]
Commitments and Contingencies (Textual)
MVP Terminal construction costs						$ 1,400
Central Texas Pipeline [Member]
Commitments and Contingencies (Textual)
Undivided interest in project (percent)	40.00%		40.00%
Pipeline capacity (in barrels per day) \| bbl / d	150,000		150,000
Cost of undivided interest in pipeline	$ 42		$ 49
Central Texas Pipeline [Member] \| Expected [Member]
Commitments and Contingencies (Textual)
Cost of undivided interest in pipeline					$ 170
Sunrise Pipeline System [Member]
Commitments and Contingencies (Textual)
Undivided interest in project (percent)	20.00%		20.00%
Pipeline capacity (in barrels per day) \| bbl / d	500,000		500,000
Cost of undivided interest in pipeline	$ 103
Sunrise Pipeline System [Member] \| Expected [Member]
Commitments and Contingencies (Textual)
Cost of undivided interest in pipeline				$ 135
Colorado City Storage Tanks [Member]
Commitments and Contingencies (Textual)
Approximate storage capacity of terminal (in thousands of barrels) \| MBbls	270		270
MVP Terminalling, LLC (MVP) [Member]
Commitments and Contingencies (Textual)
Membership percentage in VIE (percent)			50.00%