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Investments in Unconsolidated Entities Investments in Unconsolidated Entities (Details) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2019 USD ($) | Sep. 30, 2019 USD ($) | Dec. 31, 2021 USD ($) bbl | Jun. 30, 2019 | Dec. 31, 2018 USD ($)
Investments in Unconsolidated Entities |  |  |  |  |
Investments in unconsolidated entities |  | $ 3,485 |  |  | $ 2,702
Carrying value of undivided joint interest |  | $ 15,257 |  |  | 14,787
Advantage Pipeline Holdings LLC |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |
Ownership interest in unconsolidated entity |  | 50.00% |  |  |
Investments in unconsolidated entities |  | $ 74 |  |  | 72
BridgeTex Pipeline Company, LLC |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |
Ownership interest in unconsolidated entity |  | 20.00% |  |  |
Investments in unconsolidated entities |  | $ 432 |  |  | 435
Cactus II Pipeline LLC |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |
Ownership interest in unconsolidated entity |  | 65.00% |  |  |
Investments in unconsolidated entities |  | $ 666 |  |  | 455
Caddo Pipeline LLC |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |
Ownership interest in unconsolidated entity |  | 50.00% |  |  |
Investments in unconsolidated entities |  | $ 66 |  |  | 65
Capline Pipeline Company LLC |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |
Ownership interest in unconsolidated entity |  | 54.00% |  |  |
Investments in unconsolidated entities |  | $ 462 |  |  |
Fair value of investment in unconsolidated entity | $ 444 |  |  |  |
Cheyenne Pipeline LLC |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |
Ownership interest in unconsolidated entity |  | 50.00% |  |  |
Investments in unconsolidated entities |  | $ 44 |  |  | 44
Diamond Pipeline LLC |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |
Ownership interest in unconsolidated entity |  | 50.00% |  |  |
Investments in unconsolidated entities |  | $ 476 |  |  | 479
Eagle Ford Pipeline LLC |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |
Ownership interest in unconsolidated entity |  | 50.00% |  |  |
Investments in unconsolidated entities |  | $ 386 |  |  | 383
Eagle Ford Terminals Corpus Christi LLC |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |
Ownership interest in unconsolidated entity |  | 50.00% |  |  |
Investments in unconsolidated entities |  | $ 124 |  |  | 108
Midway Pipeline LLC |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |
Ownership interest in unconsolidated entity |  | 50.00% |  |  |
Investments in unconsolidated entities |  | $ 76 |  |  | 78
Red Oak Pipeline LLC |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |
Ownership interest in unconsolidated entity |  | 50.00% |  |  |
Investments in unconsolidated entities |  | $ 3 |  |  |
Saddlehorn Pipeline Company, LLC |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |
Ownership interest in unconsolidated entity |  | 40.00% |  |  |
Investments in unconsolidated entities |  | $ 227 |  |  | 215
Settoon Towing, LLC |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |
Ownership interest in unconsolidated entity |  | 50.00% |  |  |
Investments in unconsolidated entities |  | $ 58 |  |  | 58
STACK Pipeline LLC |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |
Ownership interest in unconsolidated entity |  | 50.00% |  |  |
Investments in unconsolidated entities |  | $ 116 |  |  | 120
White Cliffs Pipeline, LLC |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |
Ownership interest in unconsolidated entity |  | 36.00% |  |  |
Investments in unconsolidated entities |  | $ 196 |  |  | $ 190
Wink to Webster Pipeline LLC |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |
Ownership interest in unconsolidated entity |  | 16.00% |  | 20.00% |
Investments in unconsolidated entities |  | $ 79 |  |  |
Undivided joint interest in Capline pipeline system |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |
Undivided joint interest ownership percentage | 54.00% |  |  |  |
Carrying value of undivided joint interest | $ 175 |  |  |  |
Gain on investment in unconsolidated entities | Capline Pipeline Company LLC |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |
Gain from remeasurement to fair value of retained investment |  | $ 269 |  |  |
Forecast | Red Oak Pipeline LLC |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |
Future increase in investment from contribution |  |  | $ 155 |  |
Midland, Texas To Webster, Texas pipeline segment | Third Party | Undivided joint interest in pipeline segment |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |
Undivided joint interest ownership percentage |  | 29.00% |  |  |
Midland, Texas To Webster, Texas pipeline segment | Wink to Webster Pipeline LLC | Undivided joint interest in pipeline segment |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |
Undivided joint interest ownership percentage |  | 71.00% |  |  |
Sunrise II Pipeline | Forecast | Red Oak Pipeline LLC |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |
Pipeline capacity to be contributed (in bbls) | bbl |  |  | 260,000 |  |
Term of contract |  |  | 33 years |  |
Capline pipeline system | Capline Pipeline Company LLC |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |
Percentage of Capline pipeline system owned | 100.00% |  |  |  |

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