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Commitments and Contingencies (Details) $ in Millions | 9 Months Ended | 13 Months Ended | 22 Months Ended | 28 Months Ended |
--- | --- | --- | --- | --- | ---
Sep. 30, 2018 USD ($) bbl / d renewal property MBbls | Sep. 30, 2017 USD ($) | Sep. 30, 2018 USD ($) bbl / d renewal MBbls | Jun. 30, 2019 USD ($) | Jan. 01, 2020 USD ($) | Dec. 31, 2017 USD ($)
Commitments and Contingencies (Textual) |  |  |  |  |  |
MVP Terminal construction costs | $ 41,841 |  | $ 41,841 |  |  | $ 40,010
Contributions to MVP | 124 | $ 373 |  |  |  |
Cost of undivided interest in pipeline | $ 181 | $ 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 | $ 107 |  | $ 188 |  |  |
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 | 254 |  | 254 |  |  |
MVP Terminal [Member] | Construction in Progress [Member] |  |  |  |  |  |
Commitments and Contingencies (Textual) |  |  |  |  |  |
MVP Terminal construction costs | $ 442 |  | $ 442 |  |  |
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 | $ 43 |  | $ 50 |  |  |
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 | $ 138 |  |  |  |  |
Colorado City Storage Tanks [Member] |  |  |  |  |  |
Commitments and Contingencies (Textual) |  |  |  |  |  |
Number of properties | property | 2 |  |  |  |  |
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% |  |  |

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