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Inventory, Linefill and Base Gas and Long-term Inventory (Tables) | 12 Months Ended
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Dec. 31, 2017
Inventory, Linefill and Base Gas and Long-term Inventory |
Schedule of inventory, linefill and base gas and long-term inventory | Inventory, linefill and base gas and long-term inventory consisted of the following (barrels and natural gas volumes in thousands and carrying value in millions):
| December 31, 2017 |  | December 31, 2016
| Volumes |  | Unit of Measure |  | Carrying Value |  | Price/ Unit (1) |  | Volumes |  | Unit of Measure |  | Carrying Value |  | Price/ Unit (1)
Inventory |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Crude oil | 7,800 |  |  | barrels |  | $ | 402 |  |  | $ | 51.54 |  |  | 23,589 |  |  | barrels |  | $ | 1,049 |  |  | $ | 44.47 |
NGL | 10,774 |  |  | barrels |  | 294 |  |  | $ | 27.29 |  |  | 13,497 |  |  | barrels |  | 242 |  |  | $ | 17.93 |
Natural gas | — |  |  | Mcf |  | — |  |  | $ | — |  |  | 14,540 |  |  | Mcf |  | 32 |  |  | $ | 2.20 |
Other | N/A |  |  |  |  | 17 |  |  | N/A |  |  | N/A |  |  |  |  | 20 |  |  | N/A |
Inventory subtotal |  |  |  |  | 713 |  |  |  |  |  |  |  |  | 1,343 |  |  |
Linefill and base gas |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Crude oil | 12,340 |  |  | barrels |  | 719 |  |  | $ | 58.27 |  |  | 12,273 |  |  | barrels |  | 710 |  |  | $ | 57.85 |
NGL | 1,597 |  |  | barrels |  | 45 |  |  | $ | 28.18 |  |  | 1,660 |  |  | barrels |  | 45 |  |  | $ | 27.11 |
Natural gas | 24,976 |  |  | Mcf |  | 108 |  |  | $ | 4.32 |  |  | 30,812 |  |  | Mcf |  | 141 |  |  | $ | 4.58 |
Linefill and base gas subtotal |  |  |  |  | 872 |  |  |  |  |  |  |  |  | 896 |  |  |
Long-term inventory |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Crude oil | 1,870 |  |  | barrels |  | 105 |  |  | $ | 56.15 |  |  | 3,279 |  |  | barrels |  | 163 |  |  | $ | 49.71 |
NGL | 2,167 |  |  | barrels |  | 59 |  |  | $ | 27.23 |  |  | 1,418 |  |  | barrels |  | 30 |  |  | $ | 21.16 |
Long-term inventory subtotal |  |  |  |  | 164 |  |  |  |  |  |  |  |  | 193 |  |  |
Total |  |  |  |  | $ | 1,749 |  |  |  |  |  |  |  |  | $ | 2,432 |  |  |
(1) | Price per unit of measure is comprised of a weighted average associated with various grades, qualities and locations. Accordingly, these prices may not coincide with any published benchmarks for such products.

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- References No definition available. + Details
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- Definition Tabular disclosure of the carrying amount as of the balance sheet date of inventory, linefill and base gas and long-term inventory. This may include, but is not limited to, the volumes, unit of measure, total value, and price per unit of each of the major classes of inventory. + References No definition available. + Details
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