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Operating Segments (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 segment | Jun. 30, 2013
Operating Segments |  |  |  |
Operating segments number |  |  | 3 |
Revenues: |  |  |  |
Revenues | $ 11,195 | $ 10,295 | $ 22,878 | $ 20,915
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments |  |  |  |
Equity earnings in unconsolidated entities | 23 | 11 | 44 | 23
Segment profit | 488 | 485 | 1,097 | 1,233
Maintenance capital | 48 | 39 | 95 | 82
Transportation |  |  |  |
Revenues: |  |  |  |
Revenues | 195 | 165 | 376 | 338
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments |  |  |  |
Equity earnings in unconsolidated entities | 23 | 11 | 44 | 23
Segment profit | 221 | 160 | 427 | 323
Maintenance capital | 42 | 23 | 76 | 55
Facilities |  |  |  |
Revenues: |  |  |  |
Revenues | 144 | 197 | 301 | 420
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments |  |  |  |
Segment profit | 134 | 149 | 288 | 300
Maintenance capital | 5 | 11 | 15 | 18
Supply and Logistics |  |  |  |
Revenues: |  |  |  |
Revenues | 10,856 | 9,933 | 22,201 | 20,157
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments |  |  |  |
Segment profit | 133 | 176 | 382 | 610
Maintenance capital | 1 | 5 | 4 | 9
Interest expense related to hedged inventory | 5 | 5 | 7 | 10
Operating Segments |  |  |  |
Revenues: |  |  |  |
Revenues | 11,549 | 10,647 | 23,602 | 21,593
Operating Segments | Transportation |  |  |  |
Revenues: |  |  |  |
Revenues | 412 | 365 | 798 | 732
Operating Segments | Facilities |  |  |  |
Revenues: |  |  |  |
Revenues | 277 | 348 | 576 | 703
Operating Segments | Supply and Logistics |  |  |  |
Revenues: |  |  |  |
Revenues | 10,860 | 9,934 | 22,228 | 20,158
Intersegment |  |  |  |
Revenues: |  |  |  |
Revenues | (354) | (352) | (724) | (678)
Intersegment | Transportation |  |  |  |
Revenues: |  |  |  |
Revenues | (217) | (200) | (422) | (394)
Intersegment | Facilities |  |  |  |
Revenues: |  |  |  |
Revenues | (133) | (151) | (275) | (283)
Intersegment | Supply and Logistics |  |  |  |
Revenues: |  |  |  |
Revenues | $ (4) | $ (1) | $ (27) | $ (1)

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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1,2) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
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