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Inventory, Linefill and Base Gas and Long-term Inventory (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012 | Dec. 31, 2012
Inventory by category |  |  |  |  |
Inventory | $ 1,198 |  | $ 1,198 |  | $ 1,209
Linefill and base gas | 770 |  | 770 |  | 707
Long-term inventory | 218 |  | 218 |  | 274
Total | 2,186 |  | 2,186 |  | 2,190
Inventory-related disclosures |  |  |  |  |
Non-cash charges related to the write-down of inventory | 7 | 7 | 7 | 128 |
Crude oil |  |  |  |  |
Inventory by category |  |  |  |  |
Inventory | 535 |  | 535 |  | 737
Linefill and base gas | 645 |  | 645 |  | 583
Long-term inventory | 167 |  | 167 |  | 149
Inventory, Volumes (in barrels or in Mcf) | 5,624,000 |  | 5,624,000 |  | 9,492,000
Linefill and base gas, Volumes (in barrels or in Mcf) | 10,520,000 |  | 10,520,000 |  | 9,919,000
Long-term inventory, Volumes (in barrels or Mcf) | 2,134,000 |  | 2,134,000 |  | 1,962,000
Inventory, Price/Unit of measure (in dollars per unit) | 95.13 |  | 95.13 |  | 77.64
Linefill and base gas, Price/Unit of measure (in dollars per unit) | 61.31 |  | 61.31 |  | 58.78
Long-term inventory, Price/Unit of measure (in dollars per unit) | 78.26 |  | 78.26 |  | 75.94
NGL |  |  |  |  |
Inventory by category |  |  |  |  |
Inventory | 539 |  | 539 |  | 388
Linefill and base gas | 64 |  | 64 |  | 70
Long-term inventory | 51 |  | 51 |  | 125
Inventory, Volumes (in barrels or in Mcf) | 13,767,000 |  | 13,767,000 |  | 9,472,000
Linefill and base gas, Volumes (in barrels or in Mcf) | 1,345,000 |  | 1,345,000 |  | 1,400,000
Long-term inventory, Volumes (in barrels or Mcf) | 1,161,000 |  | 1,161,000 |  | 3,238,000
Inventory, Price/Unit of measure (in dollars per unit) | 39.15 |  | 39.15 |  | 40.96
Linefill and base gas, Price/Unit of measure (in dollars per unit) | 47.58 |  | 47.58 |  | 50.00
Long-term inventory, Price/Unit of measure (in dollars per unit) | 43.93 |  | 43.93 |  | 38.60
Natural gas |  |  |  |  |
Inventory by category |  |  |  |  |
Inventory | 101 |  | 101 |  | 60
Linefill and base gas | 61 |  | 61 |  | 54
Inventory, Volumes (in barrels or in Mcf) | 29,443,000 |  | 29,443,000 |  | 20,374,000
Linefill and base gas, Volumes (in barrels or in Mcf) | 17,615,000 |  | 17,615,000 |  | 15,755,000
Inventory, Price/Unit of measure (in dollars per unit) | 3.43 |  | 3.43 |  | 2.94
Linefill and base gas, Price/Unit of measure (in dollars per unit) | 3.46 |  | 3.46 |  | 3.43
Other |  |  |  |  |
Inventory by category |  |  |  |  |
Inventory | $ 23 |  | $ 23 |  | $ 24

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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 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 2: 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 3: 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 Reference 4: 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 5: 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. + Details
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