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UNCONSOLIDATED AFFILIATES (Details) $ in Millions | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Nov. 30, 2023 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Sep. 25, 2023 unconsolidatedAffiliate
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Number of unconsolidated affiliates | unconsolidatedAffiliate |  |  |  |  | 8
Investments in unconsolidated affiliates |  | $ 1,874 | $ 802 | $ 798 |
Equity method goodwill |  | 148 | 17 |  |
Equity in net earnings from investments |  | 202 | 148 | 122 |
Incurred expenses |  | 132 | 83 | 63 |
Contributions to unconsolidated affiliates |  | $ 207 | 3 | 1 |
Overland Pass |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Net ownership percentage |  | 50.00% |  |  |
Investments in unconsolidated affiliates |  | $ 402 | 401 |  |
Equity in net earnings from investments |  | $ 56 | 33 | 19 |
Northern Border |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Net ownership percentage |  | 50.00% |  |  |
Investments in unconsolidated affiliates |  | $ 338 | 265 |  |
Equity in net earnings from investments |  | $ 75 | 71 | 64 |
Contributions to unconsolidated affiliates | $ 91 |  |  |  |
Saddlehorn |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Net ownership percentage |  | 30.00% |  |  |
Investments in unconsolidated affiliates |  | $ 288 | 0 |  |
Equity in net earnings from investments |  | $ 10 | 0 | 0 |
MVP |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Net ownership percentage |  | 25.00% |  |  |
Investments in unconsolidated affiliates |  | $ 241 | 0 |  |
Equity in net earnings from investments |  | $ 4 | 0 | 0 |
Roadrunner |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Net ownership percentage |  | 50.00% |  |  |
Investments in unconsolidated affiliates |  | $ 188 | 94 |  |
Equity in net earnings from investments |  | 43 | 37 | 33 |
Contributions to unconsolidated affiliates |  | $ 105 |  |  |
BridgeTex |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Net ownership percentage |  | 30.00% |  |  |
Investments in unconsolidated affiliates |  | $ 193 | 0 |  |
Equity in net earnings from investments |  | (1) | 0 | 0 |
Other |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Investments in unconsolidated affiliates |  | 224 | 42 |  |
Equity in net earnings from investments |  | $ 15 | $ 7 | $ 6 |

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