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Acquisitions, Divestitures and Other Transactions - Joint Venture Transaction Narrative (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Nov. 30, 2023 | Jul. 31, 2022 | Oct. 31, 2021 | Sep. 30, 2023 | Dec. 31, 2023 | Dec. 31, 2021
Joint Venture Transaction | Plains Oryx Permian Basin LLC | Level 3 |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Identifiable assets acquired and liabilities assumed |  |  | $ 3,230 |  |  |
Joint Venture Transaction | Plains Oryx Permian Basin LLC | Level 3 | Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business combination, measurement input |  |  | 0.12 |  |  |
Joint Venture Transaction | Plains Oryx Permian Basin LLC | Level 3 | Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow | Intangible Assets |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business combination, measurement input |  |  | 0.16 |  |  |
Joint Venture Transaction | Plains Oryx Permian Basin LLC | Level 3 | Measurement Input, Market Multiple | Valuation, Market Approach | Minimum |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business combination, measurement input |  |  | 9.5 |  |  |
Joint Venture Transaction | Plains Oryx Permian Basin LLC | Level 3 | Measurement Input, Market Multiple | Valuation, Market Approach | Maximum |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business combination, measurement input |  |  | 11.0 |  |  |
Joint Venture Transaction | Plains Oryx Permian Basin LLC | Plains Oryx Permian Basin LLC |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Members' equity |  |  | $ 7,529 |  |  |
Joint Venture Transaction | Oryx Midstream Holdings LLC | Plains Oryx Permian Basin LLC |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Consideration transferred |  |  | 3,230 |  |  |
Identifiable assets acquired and liabilities assumed |  |  | $ 3,230 |  |  |
Transaction-related costs |  |  |  |  |  | $ 17
Schedule of Partners' Capital |  |  |  |  | The following table presents the amounts recognized in partners’ capital associated with this transaction (in millions):
|  |  |  | Recognized Amount
Noncontrolling interests |  |  |  | $ | 2,635 |
Partners’ capital, excluding noncontrolling interests |  |  |  | 595 |
|  |  |  | $ | 3,230 |
Schedule of Pro Forma Information |  |  |  |  | These results are not necessarily indicative of the results that might have actually occurred had the merger taken place on January 1, 2021; furthermore, this financial information is not intended to be a projection of future results (in millions, except per unit amounts):
| Year Ended
| December 31, 2021
Total revenues | $ | 42,359 |
Net income attributable to PAA | $ | 524 |
Net income allocated to common unitholders | $ | 324 |
Basic and diluted net income per common unit | $ | 0.45 |
Modified Sharing Arrangement | Plains Oryx Permian Basin LLC |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Schedule of Modified Revenue Sharing Arrangement |  |  |  |  | Under the MSA, distributions will be allocated as follows (in millions):
|  | Available Cash |  | Distributions Percentages
Tier |  | Annualized |  | PAA |  | Oryx
1 |  | Up to $300 |  | 50% |  | 50%
2 |  | $300 - $428 |  | 100% |  | —%
3 |  | $428 - $815 |  | 65% |  | 35%
4 |  | $815 and above |  | 70% |  | 30%
Modified Sharing Arrangement | Oryx Midstream Holdings LLC | Plains Oryx Permian Basin LLC |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Distribution percentage after termination of modified sharing arrangement |  |  | 65.00% |  |  |
Modified Sharing Arrangement | Oryx Midstream Holdings LLC | Plains Oryx Permian Basin LLC | Maximum |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Modified revenue sharing arrangement, term |  |  | 10 years |  |  |
Modified Sharing Arrangement | Oryx Midstream Holdings LLC | Plains Oryx Permian Basin LLC | Plains Oryx Permian Basin LLC |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Distribution percentage after termination of modified sharing arrangement |  |  | 35.00% |  |  |
Plains Oryx Permian Basin LLC |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Consolidated subsidiary, ownership interest held by the parent (as a percent) | 65.00% | 65.00% |  | 65.00% |  |
Noncontrolling interest, ownership (as a percent) |  |  |  |  | 35.00% |
Plains Oryx Permian Basin LLC | Joint Venture Transaction |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Consolidated subsidiary, ownership interest held by the parent (as a percent) |  |  | 65.00% |  |  |
Plains Oryx Permian Basin LLC | Joint Venture Transaction | Plains Oryx Permian Basin LLC |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Noncontrolling interest, ownership (as a percent) |  |  | 35.00% |  |  |
Plains Oryx Permian Basin LLC | Joint Venture Transaction | Oryx Midstream Holdings LLC |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Noncontrolling interest, ownership (as a percent) |  |  | 35.00% |  |  |
PAA | Stonepeak Infrastructure Partners | Stonepeak Infrastructure Partners, Affiliates | Series A Preferred Units |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Ownership interest (as a percent) |  |  | 8.90% |  |  |
PAA | Stonepeak Infrastructure Partners | Stonepeak Infrastructure Partners, Affiliates | Maximum | Limited Partners |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Ownership interest (as a percent) |  |  | 1.00% |  |  |

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