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Acquisitions, Divestitures and Other Transactions - Joint Venture Transaction (Details)
$ in Millions
1 Months Ended 12 Months Ended 15 Months Ended
Oct. 31, 2021
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2022
USD ($)
Minimum | Customer contracts and relationships        
Business Acquisition [Line Items]        
Estimated useful lives   1 year    
Maximum | Customer contracts and relationships        
Business Acquisition [Line Items]        
Estimated useful lives   29 years    
Joint Venture Transaction | Plains Oryx Permian Basin LLC | Customer contracts and relationships        
Business Acquisition [Line Items]        
Estimated useful lives 20 years      
Amortization   $ 142 $ 28  
Joint Venture Transaction | Plains Oryx Permian Basin LLC | Level 3        
Business Acquisition [Line Items]        
Identifiable assets acquired and liabilities assumed   3,230   $ 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 0.1175      
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   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   $ 3,230
Estimated useful lives 20 years      
Transaction-related costs   $ 17    
Modified Sharing Arrangement | Oryx Midstream Holdings LLC | Plains Oryx Permian Basin LLC        
Business Acquisition [Line Items]        
Distribution percentage after termination of modified sharing arrangement   0.65   0.65
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   0.35   0.35
Plains Oryx Permian Basin LLC        
Business Acquisition [Line Items]        
Noncontrolling interest, ownership percentage   35.00%   35.00%
Plains Oryx Permian Basin LLC | Joint Venture Transaction        
Business Acquisition [Line Items]        
Consolidated subsidiary, ownership interest held by the parent 65.00%      
Plains Oryx Permian Basin LLC | Joint Venture Transaction | Plains Oryx Permian Basin LLC        
Business Acquisition [Line Items]        
Noncontrolling interest, ownership percentage 35.00%      
Plains Oryx Permian Basin LLC | Joint Venture Transaction | Oryx Midstream Holdings LLC        
Business Acquisition [Line Items]        
Consolidated subsidiary, ownership interest held by the parent 65.00%      
PAA | Stonepeak Infrastructure Partners | Stonepeak Infrastructure Partners, Affiliates | Series A Preferred Units        
Business Acquisition [Line Items]        
Ownership interest 8.90%      
PAA | Stonepeak Infrastructure Partners | Stonepeak Infrastructure Partners, Affiliates | Maximum | Limited Partners        
Business Acquisition [Line Items]        
Ownership interest 1.00%