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Investments in Unconsolidated Affiliates (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Schedule of Equity Method Investments [Line Items] |  |  |
Investments in unconsolidated affiliates | $ 2,321 |  | $ 2,330
Equity in income of unconsolidated affiliates by business segment [Abstract] |  |  |
Equity in income of unconsolidated affiliates | 102 | $ 104 |
NGL Pipelines & Services [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Investments in unconsolidated affiliates | 610 |  | 612
Equity in income of unconsolidated affiliates by business segment [Abstract] |  |  |
Equity in income of unconsolidated affiliates | 31 | 39 |
Crude Oil Pipelines & Services [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Investments in unconsolidated affiliates | 1,674 |  | 1,681
Equity in income of unconsolidated affiliates by business segment [Abstract] |  |  |
Equity in income of unconsolidated affiliates | 69 | 64 |
Natural Gas Pipelines & Services [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Investments in unconsolidated affiliates | 34 |  | 33
Equity in income of unconsolidated affiliates by business segment [Abstract] |  |  |
Equity in income of unconsolidated affiliates | 2 | 1 |
Petrochemical & Refined Products Services [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Investments in unconsolidated affiliates | 3 |  | $ 4
Equity in income of unconsolidated affiliates by business segment [Abstract] |  |  |
Equity in income of unconsolidated affiliates | $ 0 | $ 0 |

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