Inventories (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Schedule of Inventories
Refinery feedstocks	$ 1,820	$ 1,949
Refined petroleum products and blendstocks	4,120	3,579
Renewable diesel feedstocks and products	827	583
Ethanol feedstocks and products	366	328
Materials and supplies	322	313
Inventories	$ 7,455	$ 6,752

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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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Carrying amount as of the balance sheet date of ethanol feedstocks and products.

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- Definition

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

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