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Inventory, Linefill and Base Gas and Long-term Inventory (Details) (USD $) In Millions, unless otherwise specified | 9 Months Ended |  | 3 Months Ended | 9 Months Ended |  |  |  |  | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Dec. 31, 2013 | Sep. 30, 2013 Crude oil | Sep. 30, 2013 Crude oil | Sep. 30, 2014 Crude oil bbl | Dec. 31, 2013 Crude oil bbl | Sep. 30, 2014 NGL bbl | Dec. 31, 2013 NGL bbl | Sep. 30, 2014 Natural gas Mcf | Dec. 31, 2013 Natural gas Mcf | Sep. 30, 2014 Other | Dec. 31, 2013 Other
Inventory by category |  |  |  |  |  |  |  |  |  |  |  |  |
Inventory | $ 1,314 |  | $ 1,065 |  |  | $ 476 | $ 540 | $ 699 | $ 352 | $ 119 | $ 150 | $ 20 | $ 23
Linefill and base gas | 903 |  | 798 |  |  | 715 | 679 | 54 | 62 | 134 | 57 |  |
Long-term inventory | 270 |  | 251 |  |  | 207 | 202 | 63 | 49 |  |  |  |
Total | 2,487 |  | 2,114 |  |  |  |  |  |  |  |  |  |
Inventory, Volumes (in barrels or in Mcf) |  |  |  |  |  | 5,665,000 | 6,951,000 | 17,392,000 | 8,061,000 | 29,245,000 | 40,505,000 |  |
Linefill and base gas, Volumes (in barrels or in Mcf) |  |  |  |  |  | 11,390,000 | 10,966,000 | 1,214,000 | 1,341,000 | 28,612,000 | 16,615,000 |  |
Long-term inventory, Volumes (in barrels or in Mcf) |  |  |  |  |  | 2,557,000 | 2,498,000 | 1,681,000 | 1,161,000 |  |  |  |
Inventory, Price/Unit of measure (in dollars per unit) |  |  |  |  |  | 84.02 | 77.69 | 40.19 | 43.67 | 4.07 | 3.70 |  |
Linefill and base gas, Price/Unit of measure (in dollars per unit) |  |  |  |  |  | 62.77 | 61.92 | 44.48 | 46.23 | 4.68 | 3.43 |  |
Long-term inventory, Price/Unit of measure (in dollars per unit) |  |  |  |  |  | 80.95 | 80.86 | 37.48 | 42.20 |  |  |  |
Inventory-related disclosures |  |  |  |  |  |  |  |  |  |  |  |  |
Charge related to the write-down of inventory | $ 37 | $ 7 |  | $ 7 | $ 7 |  |  |  |  | $ 37 |  |  |

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- Definition Crude oil, refined products, and NGL linefill in pipelines and base gas in natural gas storage facilities that are owned by the entity. The linefill and base gas are intended for long-term use. + References No definition available. + Details
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- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6386567&loc=d3e3927-108312 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 + Details
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