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Business Segments and Related Information, Consolidated Revenues and Expenses (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Consolidated Revenues [Abstract]        
Total consolidated revenues $ 11,998 $ 15,468 $ 35,093 $ 44,536
Operating costs and expenses:        
Cost of sales [1] 8,786 12,319 25,796 35,325
Other operating costs and expenses [2] 986 926 2,749 2,567
Depreciation, amortization and accretion 583 537 1,692 1,607
Asset impairment charges 11 29 27 48
Net losses (gains) attributable to asset sales and related matters 0 1 (4) 3
General and administrative costs 59 55 172 179
Total consolidated costs and expenses 10,425 13,867 30,432 39,729
NGL Pipelines & Services [Member]        
Consolidated Revenues [Abstract]        
Total consolidated revenues 3,757 6,237 12,375 18,371
Crude Oil Pipelines & Services [Member]        
Consolidated Revenues [Abstract]        
Total consolidated revenues 5,365 4,724 13,850 14,181
Natural Gas Pipelines & Services [Member]        
Consolidated Revenues [Abstract]        
Total consolidated revenues 884 1,886 2,874 4,696
Petrochemical & Refined Products Services [Member]        
Consolidated Revenues [Abstract]        
Total consolidated revenues $ 1,992 $ 2,621 $ 5,994 $ 7,288
[1] Cost of sales is a component of “Operating costs and expenses” as presented on our Unaudited Condensed Statements of Consolidated Operations.  Fluctuations in these amounts are primarily due to changes in energy commodity prices and sales volumes associated with our marketing activities.
[2] Represents the cost of operating our plants, pipelines and other fixed assets excluding: depreciation, amortization and accretion charges; asset impairment charges; and net losses (gains) attributable to asset sales and related matters.