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Inventories (Tables) | 12 Months Ended
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Dec. 31, 2017
Inventories |
Inventories |
($ millions) |  | Dec 31 2017 |  | Dec 31 2016 |  |
Crude oil |  | 1 203 |  | 1 110 |  |
Refined products |  | 1 268 |  | 1 193 |  |
Materials, supplies and merchandise |  | 664 |  | 680 |  |
Energy trading commodity inventories |  | 333 |  | 515 |  |
Reclassified to assets held for sale (notes 36 and 37) |  | — |  | (258 | ) |
|  | 3 468 |  | 3 240 |  |

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- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References No definition available. + Details
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