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Inventory, Linefill, Base Gas and Long-term Inventory (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2012 | Jun. 30, 2012 | Sep. 30, 2012 | Sep. 30, 2011 | Dec. 31, 2011
Inventory by category |  |  |  |  |
Inventory | $ 1,320 |  | $ 1,320 |  | $ 978
Linefill and base gas | 714 |  | 714 |  | 564
Long-term inventory | 287 |  | 287 |  | 135
Total | 2,321 |  | 2,321 |  | 1,677
Inventory-related disclosures |  |  |  |  |
Ratio of Mcf of natural gas to crude Btu | 6 |  | 6 |  | 6
Non-cash charges related to the write-down of inventory | 7 | 121 | 128 | 3 |
Crude oil |  |  |  |  |
Inventory by category |  |  |  |  |
Inventory | 650 |  | 650 |  | 483
Linefill and base gas | 582 |  | 582 |  | 514
Long-term inventory | 143 |  | 143 |  | 127
Inventory, Volumes (in barrels or in Mcf) | 7,122,000 |  | 7,122,000 |  | 5,361,000
Linefill and base gas, Volumes (in barrels or in Mcf) | 9,882,000 |  | 9,882,000 |  | 9,366,000
Long-term inventory, Volumes (in barrels or cubic feet) | 1,916,000 |  | 1,916,000 |  | 1,714,000
Inventory, Price/Unit of measure (in dollars per unit) | 91.27 |  | 91.27 |  | 90.10
Linefill and base gas, Price/Unit of measure (in dollars per unit) | 58.89 |  | 58.89 |  | 54.88
Long-term inventory, Price/Unit of measure (in dollars per unit) | 74.63 |  | 74.63 |  | 74.10
NGL |  |  |  |  |
Inventory by category |  |  |  |  |
Inventory | 604 |  | 604 |  | 438
Linefill and base gas | 81 |  | 81 |  | 2
Long-term inventory | 144 |  | 144 |  | 8
Inventory, Volumes (in barrels or in Mcf) | 14,683,000 |  | 14,683,000 |  | 6,885,000
Linefill and base gas, Volumes (in barrels or in Mcf) | 1,689,000 |  | 1,689,000 |  | 31,000
Long-term inventory, Volumes (in barrels or cubic feet) | 3,620,000 |  | 3,620,000 |  | 150,000
Inventory, Price/Unit of measure (in dollars per unit) | 41.14 |  | 41.14 |  | 63.62
Linefill and base gas, Price/Unit of measure (in dollars per unit) | 47.96 |  | 47.96 |  | 64.52
Long-term inventory, Price/Unit of measure (in dollars per unit) | 39.78 |  | 39.78 |  | 53.33
Natural gas |  |  |  |  |
Inventory by category |  |  |  |  |
Inventory | 51 |  | 51 |  | 51
Linefill and base gas | 51 |  | 51 |  | 48
Inventory, Volumes (in barrels or in Mcf) | 21,800,000 |  | 21,800,000 |  | 16,170,000
Linefill and base gas, Volumes (in barrels or in Mcf) | 15,005,000 |  | 15,005,000 |  | 14,105,000
Inventory, Price/Unit of measure (in dollars per unit) | 2.34 |  | 2.34 |  | 3.15
Linefill and base gas, Price/Unit of measure (in dollars per unit) | 3.40 |  | 3.40 |  | 3.40
Inventory-related disclosures |  |  |  |  |
Number used to divide into natural gas volumes to convert to barrels | 6 |  | 6 |  | 6
Other |  |  |  |  |
Inventory by category |  |  |  |  |
Inventory | $ 15 |  | $ 15 |  | $ 6

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- Definition Crude oil, refined products, and NGL linefill and base gas in pipelines and 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 Inventories not expected to be converted to cash, sold or exchanged within the normal operating cycle. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Section A -Paragraph 4, 5 -Chapter 3 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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(d)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 6 -Subparagraph d -Article 5 + Details
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- Definition Charge to cost of goods sold that represents the reduction of the carrying amount of inventory, generally attributable to obsolescence or market conditions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Concepts (CON) -Number 6 -Paragraph 86 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Section 7 -Paragraph 14 -Chapter 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6386783&loc=d3e4542-108314 + Details
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