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Inventories (Details) - USD ($) $ in Millions | Jun. 30, 2019 | Dec. 31, 2018
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Schedule of Inventories |  |
Refinery feedstocks | $ 2,092 | $ 2,265
Refined petroleum products and blendstocks | 3,564 | 3,653
Ethanol feedstocks and products | 300 | 298
Renewable diesel feedstocks and products | 56 | 52
Materials and supplies | 269 | 264
Inventories | 6,281 | 6,532
Inventories (Textual) |  |
Excess of market value over carrying amount of LIFO inventories | 2,800 | 1,500
Amount of non-LIFO inventory | $ 1,200 | $ 1,100

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)(4),(5)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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