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Inventories (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Mar. 31, 2020 | Dec. 31, 2019
Schedule of Inventories |  |  |  |  |  |
Refinery feedstocks | $ 1,625 |  | $ 1,625 |  |  | $ 2,399
Refined petroleum products and blendstocks | 3,180 |  | 3,180 |  |  | 4,034
Renewable diesel feedstocks and products | 29 |  | 29 |  |  | 46
Ethanol feedstocks and products | 240 |  | 240 |  |  | 260
Materials and supplies | 283 |  | 283 |  |  | 274
Inventories | 5,357 |  | 5,357 |  |  | 7,013
Inventories (Textual) |  |  |  |  |  |
LCM inventory valuation reserve | 0 |  | 0 |  | $ 2,500 |
Lower of cost or market (LCM) inventory valuation adjustment | (313) | $ 0 | (19) | $ 0 |  |
Excess of market value over carrying amount of LIFO inventories |  |  |  |  |  | 2,500
Liquidation of LIFO inventory, increase to cost of materials and other | 326 |  | 326 |  |  |
Amount of non-LIFO inventory | $ 911 |  | $ 911 |  |  | $ 1,400

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