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Partners' Capital and Distributions - Noncontrolling Interests in Subsidiaries (Details) - USD ($) $ in Millions | 1 Months Ended | 12 Months Ended | 15 Months Ended
--- | --- | --- | ---
Nov. 30, 2022 | Oct. 31, 2021 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2022
Partners Capital and Distribution [Line Items] |  |  |  |  |
Noncontrolling interests |  |  | $ 3,268 | $ 2,838 | $ 3,268
Cactus II Pipeline LLC |  |  |  |  |
Partners Capital and Distribution [Line Items] |  |  |  |  |
Additional interest acquired | 5.00% |  |  |  |
Partners' capital impact of business combination |  |  | 526 |  |
Business Combination, Step Acquisition, Equity Interest in Acquiree, Including Subsequent Acquisition, Percentage | 70.00% |  |  |  |
Cactus II Pipeline LLC | Noncontrolling Interests |  |  |  |  |
Partners Capital and Distribution [Line Items] |  |  |  |  |
Partners' capital impact of business combination |  |  | 526 |  |
Noncontrolling interest, increase from business combination | $ 526 |  |  |  |
Plains Oryx Permian Basin LLC | Joint Venture Transaction |  |  |  |  |
Partners Capital and Distribution [Line Items] |  |  |  |  |
Partners' capital impact of business combination |  |  | (26) | 3,256 |
Plains Oryx Permian Basin LLC | Noncontrolling Interests | Joint Venture Transaction |  |  |  |  |
Partners Capital and Distribution [Line Items] |  |  |  |  |
Partners' capital impact of business combination |  |  | (16) | 2,651 |
Plains Oryx Permian Basin LLC | Noncontrolling Interests | Joint Venture Transaction | Oryx Midstream Holdings LLC |  |  |  |  |
Partners Capital and Distribution [Line Items] |  |  |  |  |
Noncontrolling interest, increase from business combination |  |  |  |  | 2,635
Plains Oryx Permian Basin LLC | Partners’ Capital Excluding Noncontrolling Interests | Joint Venture Transaction |  |  |  |  |
Partners Capital and Distribution [Line Items] |  |  |  |  |
Partners' capital impact of business combination |  |  | $ (10) | $ 605 | 595
Oryx Midstream Holdings LLC | Plains Oryx Permian Basin LLC | Joint Venture Transaction |  |  |  |  |
Partners Capital and Distribution [Line Items] |  |  |  |  |
Partners' capital impact of business combination |  |  |  |  | $ 3,230
Plains Oryx Permian Basin LLC |  |  |  |  |
Partners Capital and Distribution [Line Items] |  |  |  |  |
Noncontrolling interest, ownership percentage |  |  | 35.00% |  | 35.00%
Plains Oryx Permian Basin LLC | Joint Venture Transaction |  |  |  |  |
Partners Capital and Distribution [Line Items] |  |  |  |  |
Consolidated subsidiary, ownership interest held by the parent |  | 65.00% |  |  |
Plains Oryx Permian Basin LLC | Oryx Midstream Holdings LLC | Joint Venture Transaction |  |  |  |  |
Partners Capital and Distribution [Line Items] |  |  |  |  |
Noncontrolling interest, ownership percentage by parent |  | 35.00% |  |  |
Consolidated subsidiary, ownership interest held by the parent |  | 65.00% |  |  |
Cactus II Pipeline LLC |  |  |  |  |
Partners Capital and Distribution [Line Items] |  |  |  |  |
Noncontrolling interest, ownership percentage |  |  | 30.00% |  | 30.00%
Cactus II Pipeline LLC | Enbridge |  |  |  |  |
Partners Capital and Distribution [Line Items] |  |  |  |  |
Noncontrolling interest, ownership percentage | 30.00% |  |  |  |
Red River Pipeline Company LLC |  |  |  |  |
Partners Capital and Distribution [Line Items] |  |  |  |  |
Noncontrolling interest, ownership percentage |  |  | 33.00% |  | 33.00%

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