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Investments in Unconsolidated Entities (Tables) | 6 Months Ended
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Jun. 30, 2019
Equity Method Investments and Joint Ventures [Abstract] |
Schedule of investments in unconsolidated entities | Our investments in unconsolidated entities consisted of the following (in millions, except percentage data):
Entity (1) |  | Type of Operation |  | Ownership Interest at June 30, 2019 |  | June 30, 2019 |  | December 31, 2018
Advantage Pipeline Holdings LLC |  | Crude Oil Pipeline |  | 50% |  | $ | 74 |  |  | $ | 72 |
BridgeTex Pipeline Company, LLC |  | Crude Oil Pipeline |  | 20% |  | 434 |  |  | 435 |
Cactus II Pipeline LLC |  | Crude Oil Pipeline (2) |  | 65% |  | 602 |  |  | 455 |
Caddo Pipeline LLC |  | Crude Oil Pipeline |  | 50% |  | 65 |  |  | 65 |
Capline Pipeline Company LLC |  | Crude Oil Pipeline (3) |  | 54% |  | 466 |  |  | — |
Cheyenne Pipeline LLC |  | Crude Oil Pipeline |  | 50% |  | 43 |  |  | 44 |
Diamond Pipeline LLC |  | Crude Oil Pipeline |  | 50% |  | 478 |  |  | 479 |
Eagle Ford Pipeline LLC |  | Crude Oil Pipeline |  | 50% |  | 386 |  |  | 383 |
Eagle Ford Terminals Corpus Christi LLC (“Eagle Ford Terminals”) |  | Crude Oil Terminal and Dock (2) |  | 50% |  | 120 |  |  | 108 |
Midway Pipeline LLC |  | Crude Oil Pipeline |  | 50% |  | 76 |  |  | 78 |
Red Oak Pipeline LLC (“Red Oak”) |  | Crude Oil Pipeline (2) |  | 50% |  | 1 |  |  | — |
Saddlehorn Pipeline Company, LLC |  | Crude Oil Pipeline |  | 40% |  | 223 |  |  | 215 |
Settoon Towing, LLC |  | Barge Transportation Services |  | 50% |  | 58 |  |  | 58 |
STACK Pipeline LLC |  | Crude Oil Pipeline |  | 50% |  | 117 |  |  | 120 |
White Cliffs Pipeline, LLC |  | Crude Oil Pipeline |  | 36% |  | 196 |  |  | 190 |
Wink to Webster Pipeline LLC (“W2W Pipeline”) |  | Crude Oil Pipeline (2) |  | 20% | (4) | 38 |  |  | — |
Total investments in unconsolidated entities |  |  |  |  |  | $ | 3,377 |  |  | $ | 2,702 |
(1) | Except for Eagle Ford Terminals, which is reported in our Facilities segment, the financial results from the entities are reported in our Transportation segment.
(2) | Asset is currently under construction by the entity and has not yet been placed in service.
(3) | The Capline pipeline was taken out of service in the fourth quarter of 2018. Subsequent to June 30, 2019, the owners of Capline Pipeline Company LLC sanctioned the reversal of the Capline pipeline system.
(4) Subsequent to June 30, 2019, our ownership interest in W2W Pipeline was reduced to 16%, as discussed below.

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- Definition Tabular disclosure of equity method investments including, but not limited to, name of each investee or group of investments, percentage ownership, difference between recorded amount of an investment and the value of the underlying equity in the net assets, and summarized financial information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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