Inventories (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Schedule of Inventories
Refinery feedstocks	$ 1,878	$ 1,949
Refined petroleum products and blendstocks	4,232	3,579
Renewable diesel feedstocks and products	797	583
Ethanol feedstocks and products	270	328
Materials and supplies	336	313
Inventories	$ 7,513	$ 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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- Definition

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.

+ References

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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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
-Topic 210
-SubTopic 10
-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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