Inventories (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2023
Schedule of Inventories
Refinery feedstocks	$ 1,949	$ 2,223
Refined petroleum products and blendstocks	3,579	3,790
Renewable diesel feedstocks and products	583	913
Ethanol feedstocks and products	328	313
Materials and supplies	313	344
Inventories	6,752	7,583
Inventories (Textual)
Excess of market value over carrying amount of LIFO inventories	6,300	4,400
Liquidation of LIFO, cost decrease	323
Amount of non-LIFO inventory	$ 1,600	$ 1,500

The aggregate carrying amount as of the balance sheet date of unrefined petroleum and the liquid hydrocarbon components recovered from natural gas.

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The effect of liquidating LIFO (last in first out) inventory layers on income.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The excess of replacement or current cost over the stated LIFO (last in first out) inventory value when the LIFO inventory method is utilized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Carrying amount as of the balance sheet date of finished goods inventories for petroleum products, crude oil, petrochemical products, and other oil and gas inventories.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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-Topic 852
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Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

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The amount of weighted average cost inventory present at the reporting date when inventory is valued using different valuation methods.

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Carrying amount as of the balance sheet date of ethanol feedstocks and products.

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Carrying amount as of the balance sheet date of renewable diesel feedstocks and products.

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