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Investments in Unconsolidated Entities - Narrative (Details) $ in Millions | 3 Months Ended | 12 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2022 USD ($) pipeline | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Nov. 30, 2024 | Sep. 30, 2023 | Nov. 30, 2022 | Oct. 31, 2022 | Sep. 30, 2022 | Jul. 31, 2022 | Jun. 30, 2022
Investments in Unconsolidated Entities |  |  |  |  |  |  |  |  |  |  |
Gains (losses) on investments in unconsolidated entities, net |  | $ 15 | $ 28 | $ 346 |  |  |  |  |  |  |
Capital contributions to equity method investees excluding capitalized interest |  | 4 | 29 | $ 13 |  |  |  |  |  |  |
Amount by which investments in unconsolidated entities exceeded our share of the underlying equity in the net assets |  | $ 213 | $ 229 |  |  |  |  |  |  |  |
OMOG JV LLC (“OMOG”) |  |  |  |  |  |  |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |  |  |  |  |  |  |
Ownership interest in unconsolidated entity (as a percent) |  |  |  |  |  |  |  |  | 40.00% |  |
OMOG JV LLC (“OMOG”) | Acquisition of Additional Interest in Exchange for Contribution of Pipeline Assets |  |  |  |  |  |  |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |  |  |  |  |  |  |
Number of pipelines or partial pipelines contributed | pipeline | 2 |  |  |  |  |  |  |  |  |  |
Ownership interest in unconsolidated entity (as a percent) | 57.00% |  |  | 57.00% |  |  |  |  |  |  |
Gains (losses) on investments in unconsolidated entities, net | $ (25) |  |  |  |  |  |  |  |  |  |
Advantage Pipeline Holdings LLC |  |  |  |  |  |  |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |  |  |  |  |  |  |
Ownership interest in unconsolidated entity (as a percent) |  |  |  |  |  |  |  |  |  |  | 50.00%
Midway Pipeline LLC |  |  |  |  |  |  |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |  |  |  |  |  |  |
Additional interest acquired (as a percent) |  | 50.00% |  |  |  |  |  |  |  |  |
Business combination, step acquisition, equity interest in acquire (as a percent) |  |  |  |  | 50.00% |  |  |  |  |  |
OMOG JV LLC (“OMOG”) |  |  |  |  |  |  |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |  |  |  |  |  |  |
Additional interest acquired (as a percent) |  |  |  |  |  | 43.00% |  |  |  |  |
Advantage Pipeline Holdings LLC |  |  |  |  |  |  |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |  |  |  |  |  |  |
Additional interest acquired (as a percent) |  |  |  |  |  |  |  |  |  | 50.00% |
Cactus II Pipeline LLC |  |  |  |  |  |  |  |  |  |  |
Investments in Unconsolidated Entities |  |  |  |  |  |  |  |  |  |  |
Additional interest acquired (as a percent) |  |  |  |  |  |  | 5.00% |  |  |  |
Business combination, step acquisition, equity interest in acquire (as a percent) |  |  |  |  |  |  |  | 65.00% |  |  |

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- Definition Cash outflow for capital contributions (excluding capitalized interest) subsequent to the initial purchase of interest in equity method investments, to fund the entity's portion of development, construction or capital expansion projects of the equity method investees, net of cash received as a return of investment. + References No definition available. + Details
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