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Revenues - Schedule of Revenues by Business Segment (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disaggregation of Revenue [Line Items]      
Revenues $ 52,596 $ 56,219 $ 49,715
NGL Pipelines & Services      
Disaggregation of Revenue [Line Items]      
Revenues 17,316 20,276 17,645
NGL Pipelines & Services | Sales of NGLs and related products      
Disaggregation of Revenue [Line Items]      
Revenues 14,415 17,397 14,846
NGL Pipelines & Services | Total segment midstream services      
Disaggregation of Revenue [Line Items]      
Revenues 2,901 2,879 2,799
NGL Pipelines & Services | Natural gas processing and fractionation      
Disaggregation of Revenue [Line Items]      
Revenues 1,261 1,349 1,278
NGL Pipelines & Services | Transportation      
Disaggregation of Revenue [Line Items]      
Revenues 1,299 1,151 1,090
NGL Pipelines & Services | Storage and terminals      
Disaggregation of Revenue [Line Items]      
Revenues 341 379 431
Crude Oil Pipelines & Services      
Disaggregation of Revenue [Line Items]      
Revenues 20,761 21,580 19,336
Crude Oil Pipelines & Services | Sales of crude oil      
Disaggregation of Revenue [Line Items]      
Revenues 19,560 20,389 18,185
Crude Oil Pipelines & Services | Total segment midstream services      
Disaggregation of Revenue [Line Items]      
Revenues 1,201 1,191 1,151
Crude Oil Pipelines & Services | Transportation      
Disaggregation of Revenue [Line Items]      
Revenues 770 779 744
Crude Oil Pipelines & Services | Storage and terminals      
Disaggregation of Revenue [Line Items]      
Revenues 431 412 407
Natural Gas Pipelines & Services      
Disaggregation of Revenue [Line Items]      
Revenues 4,167 3,004 3,776
Natural Gas Pipelines & Services | Sales of natural gas      
Disaggregation of Revenue [Line Items]      
Revenues 2,355 1,458 2,373
Natural Gas Pipelines & Services | Total segment midstream services      
Disaggregation of Revenue [Line Items]      
Revenues 1,812 1,546 1,403
Natural Gas Pipelines & Services | Transportation      
Disaggregation of Revenue [Line Items]      
Revenues 1,812 1,546 1,403
Petrochemical & Refined Products Services      
Disaggregation of Revenue [Line Items]      
Revenues 10,352 11,359 8,958
Petrochemical & Refined Products Services | Sales of petrochemicals and refined products      
Disaggregation of Revenue [Line Items]      
Revenues 9,010 10,013 7,689
Petrochemical & Refined Products Services | Total segment midstream services      
Disaggregation of Revenue [Line Items]      
Revenues 1,342 1,346 1,269
Petrochemical & Refined Products Services | Fractionation and isomerization      
Disaggregation of Revenue [Line Items]      
Revenues 354 371 282
Petrochemical & Refined Products Services | Transportation      
Disaggregation of Revenue [Line Items]      
Revenues 668 663 660
Petrochemical & Refined Products Services | Storage and terminals      
Disaggregation of Revenue [Line Items]      
Revenues $ 320 $ 312 $ 327