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Inventories (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Inventory by Product Type [Abstract]          
NGLs $ 2,298   $ 2,298   $ 2,392
Petrochemicals and refined products 447   447   536
Crude oil 570   570   419
Natural gas 4   4   5
Total 3,319   3,319   $ 3,352
Summary of cost of sales and lower of cost or net realizable value adjustments [Abstract]          
Cost of sales [1] 10,387 $ 8,786 31,976 $ 25,796  
Lower of cost or net realizable value adjustments recognized in cost of sales $ 3 $ 8 $ 5 $ 17  
[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.