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Acquisitions, Divestitures and Other Transactions - Other Acquisitions Narrative (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended
Nov. 30, 2023
Oct. 31, 2022
Jul. 31, 2022
Sep. 30, 2023
Certain Straddle Plants | NGL        
Business Acquisition [Line Items]        
Obligation, processing capacity term (in years)   50 years    
Asset acquisition, consideration transferred   $ 122    
Revenue recognition term (in years)   50 years    
Northern Delaware Basin Gathering System        
Business Acquisition [Line Items]        
Asset acquisition amount, net to our interest in the Permian JV $ 88      
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%
Advantage Pipeline Holdings LLC        
Business Acquisition [Line Items]        
Cash consideration, including working capital and other adjustments     $ 74  
Business acquisition amount, net to our interest in the Permian JV     $ 48  
Additional interest acquired (as a percent)     50.00%  
Business combination, step acquisition, equity interest in acquiree, including subsequent acquisition (as a percent)     100.00%  
Subsidiary of LM Energy Partners | Plains Oryx Permian Basin LLC | Northern Delaware Basin Gathering System        
Business Acquisition [Line Items]        
Asset acquisition, consideration transferred $ 135