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Inventories (Tables)

12 Months Ended

Dec. 31, 2018

Inventories

Inventories

($ millions)		December 31 2018		December 31 2017
Crude oil		1 177		1 203
Refined products		1 033		1 268
Materials, supplies and merchandise		702		664
Energy trading commodity inventories		247		333
		3 159		3 468

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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.

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