Inventories, net (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2020	Dec. 31, 2019
Inventory Disclosure [Abstract]
Fuel	$ 319	$ 412
Other	8	7
Inventories, net	327	419
Inventory Adjustments	360	$ 229
Inventory Write-down	$ 126

Amount of inventory reserves for last-in first-out (LIFO) and other inventory valuation methods.

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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.

+ References

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Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

+ References

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

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