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Acquisitions, Divestitures and Other Transactions - Schedule of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions | Sep. 30, 2023 | Nov. 30, 2022 | Oct. 31, 2021
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OMOG JV LLC and Southern Delaware Gathering Assets |  |  |
Business Acquisition [Line Items] |  |  |
Finite-lived intangible asset, useful life (in years) | 10 years |  |
Property and equipment | $ 484 |  |
Intangible assets | 34 |  |
Working capital and other assets and liabilities | 14 |  |
Identifiable assets acquired and liabilities assumed | $ 532 |  |
OMOG JV LLC and Southern Delaware Gathering Assets | Minimum |  |  |
Business Acquisition [Line Items] |  |  |
Estimated Useful Lives (Years) | 3 years |  |
OMOG JV LLC and Southern Delaware Gathering Assets | Maximum |  |  |
Business Acquisition [Line Items] |  |  |
Estimated Useful Lives (Years) | 30 years |  |
Cactus II Pipeline LLC |  |  |
Business Acquisition [Line Items] |  |  |
Finite-lived intangible asset, useful life (in years) |  | 20 years |
Property and equipment |  | $ 1,174 |
Intangible assets |  | 428 |
Working capital and other assets and liabilities |  | (46) |
Identifiable assets acquired and liabilities assumed |  | $ 1,556 |
Cactus II Pipeline LLC | Minimum |  |  |
Business Acquisition [Line Items] |  |  |
Estimated Useful Lives (Years) |  | 3 years |
Cactus II Pipeline LLC | Maximum |  |  |
Business Acquisition [Line Items] |  |  |
Estimated Useful Lives (Years) |  | 50 years |
Plains Oryx Permian Basin LLC | Oryx Midstream Holdings LLC | Joint Venture Transaction |  |  |
Business Acquisition [Line Items] |  |  |
Finite-lived intangible asset, useful life (in years) |  |  | 20 years
Property and equipment |  |  | $ 1,886
Intangible assets |  |  | 1,247
Investment in unconsolidated entities |  |  | 103
Working capital and other assets and liabilities |  |  | (6)
Identifiable assets acquired and liabilities assumed |  |  | $ 3,230
Plains Oryx Permian Basin LLC | Oryx Midstream Holdings LLC | Joint Venture Transaction | Minimum |  |  |
Business Acquisition [Line Items] |  |  |
Estimated Useful Lives (Years) |  |  | 3 years
Plains Oryx Permian Basin LLC | Oryx Midstream Holdings LLC | Joint Venture Transaction | Maximum |  |  |
Business Acquisition [Line Items] |  |  |
Estimated Useful Lives (Years) |  |  | 30 years

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