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Supplemental Cash Flow Information (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Decrease (increase) in:      
Accounts receivable - trade $ 356 $ (1,934)  
Accounts receivable - related parties 3 (3)  
Inventories 362 65  
Prepaid and other current assets (358) 948  
Other assets 3 29  
Increase (decrease) in:      
Accounts payable - trade (21) 216  
Accounts payable - related parties (168) (105)  
Accrued product payables (600) 2,371  
Accrued interest (187) (232)  
Other current liabilities 161 (1,132)  
Other long-term liabilities 10 (32)  
Net effect of changes in operating accounts (439) 191  
Cash payments for interest, net of $32 and $17 capitalized during the three months ended March 31, 2023, and 2022 respectively 494 540  
Capitalized interest [1] 32 17  
Cash payments (refunds) for federal and state income taxes 2 $ (14)  
Liability for construction in progress expenditures $ 247   $ 238
[1] We capitalize interest costs incurred on funds used to construct property, plant and equipment while the asset is in its construction phase.  The capitalized interest is recorded as part of the asset to which it relates and is amortized over the asset’s estimated useful life as a component of depreciation expense.  When capitalized interest is recorded, it reduces interest expense from what it would be otherwise.