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Investments in Unconsolidated Affiliates - Schedule of Investments in Unconsolidated Affiliates (Details) - USD ($)
$ in Millions
1 Months Ended
Jun. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Schedule of Equity Method Investments [Line Items]      
Investments in unconsolidated affiliates   $ 2,185 $ 2,259
Transport 4, LLC (“Transport 4”)      
Schedule of Equity Method Investments [Line Items]      
Ownership interest 25.00%    
Proceeds from sale of equity method investments $ 8    
Equity method investment, realized gain (loss) on disposal $ 6    
NGL Pipelines & Services      
Schedule of Equity Method Investments [Line Items]      
Investments in unconsolidated affiliates   $ 572 598
NGL Pipelines & Services | Venice Energy Service Company, L.L.C. (“VESCO”)      
Schedule of Equity Method Investments [Line Items]      
Ownership interest   13.10%  
Investments in unconsolidated affiliates   $ 24 24
NGL Pipelines & Services | K/D/S Promix, L.L.C. (“Promix”)      
Schedule of Equity Method Investments [Line Items]      
Ownership interest   50.00%  
Investments in unconsolidated affiliates   $ 21 22
NGL Pipelines & Services | Baton Rouge Fractionators LLC (“BRF”)      
Schedule of Equity Method Investments [Line Items]      
Ownership interest   32.20%  
Investments in unconsolidated affiliates   $ 12 12
NGL Pipelines & Services | Skelly-Belvieu Pipeline Company, L.L.C. (“Skelly-Belvieu”)      
Schedule of Equity Method Investments [Line Items]      
Ownership interest   50.00%  
Investments in unconsolidated affiliates   $ 21 25
NGL Pipelines & Services | Texas Express Pipeline LLC (“Texas Express”)      
Schedule of Equity Method Investments [Line Items]      
Ownership interest   35.00%  
Investments in unconsolidated affiliates   $ 287 299
NGL Pipelines & Services | Texas Express Gathering LLC (“TEG”)      
Schedule of Equity Method Investments [Line Items]      
Ownership interest   45.00%  
Investments in unconsolidated affiliates   $ 32 33
NGL Pipelines & Services | Front Range Pipeline LLC (“Front Range”)      
Schedule of Equity Method Investments [Line Items]      
Ownership interest   33.30%  
Investments in unconsolidated affiliates   $ 175 183
Crude Oil Pipelines & Services      
Schedule of Equity Method Investments [Line Items]      
Investments in unconsolidated affiliates   $ 1,581 1,628
Crude Oil Pipelines & Services | Seaway Crude Holdings LLC (“Seaway”)      
Schedule of Equity Method Investments [Line Items]      
Ownership interest   50.00%  
Investments in unconsolidated affiliates   $ 1,120 1,147
Crude Oil Pipelines & Services | Eagle Ford Pipeline LLC (“Eagle Ford Crude Oil Pipeline”)      
Schedule of Equity Method Investments [Line Items]      
Ownership interest   50.00%  
Investments in unconsolidated affiliates   $ 351 368
Crude Oil Pipelines & Services | Eagle Ford Terminals Corpus Christi LLC (“Eagle Ford Corpus Christi”)      
Schedule of Equity Method Investments [Line Items]      
Ownership interest   50.00%  
Investments in unconsolidated affiliates   $ 110 113
Natural Gas Pipelines & Services      
Schedule of Equity Method Investments [Line Items]      
Investments in unconsolidated affiliates   $ 31 30
Natural Gas Pipelines & Services | White River Hub, LLC (“White River Hub”)      
Schedule of Equity Method Investments [Line Items]      
Ownership interest   50.00%  
Investments in unconsolidated affiliates   $ 16 16
Natural Gas Pipelines & Services | Old Ocean Pipeline, LLC (“Old Ocean”)      
Schedule of Equity Method Investments [Line Items]      
Ownership interest   50.00%  
Investments in unconsolidated affiliates   $ 15 14
Petrochemical & Refined Products Services      
Schedule of Equity Method Investments [Line Items]      
Investments in unconsolidated affiliates   $ 1 3
Petrochemical & Refined Products Services | Baton Rouge Propylene Concentrator LLC (“BRPC”)      
Schedule of Equity Method Investments [Line Items]      
Ownership interest   30.00%  
Investments in unconsolidated affiliates   $ 1 1
Petrochemical & Refined Products Services | Transport 4, LLC (“Transport 4”)      
Schedule of Equity Method Investments [Line Items]      
Investments in unconsolidated affiliates   $ 0 $ 2