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Operating Segments (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 segment | Sep. 30, 2013
Operating segment information |  |  |  |
Operating segments number |  |  | 3 |
Revenues: |  |  |  |
Revenues | $ 11,127 | $ 10,703 | $ 34,005 | $ 31,617
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments |  |  |  |
Equity earnings in unconsolidated entities | 29 | 19 | 73 | 42
Segment profit | 530 | 408 | 1,627 | 1,640
Maintenance capital | 56 | 42 | 151 | 124
Transportation |  |  |  |
Revenues: |  |  |  |
Revenues | 198 | 179 | 574 | 517
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments |  |  |  |
Equity earnings in unconsolidated entities | 29 | 19 | 73 | 42
Segment profit | 231 | 198 | 658 | 522
Maintenance capital | 35 | 29 | 111 | 84
Facilities |  |  |  |
Revenues: |  |  |  |
Revenues | 141 | 138 | 443 | 558
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments |  |  |  |
Segment profit | 147 | 146 | 435 | 445
Maintenance capital | 19 | 6 | 34 | 23
Supply and Logistics |  |  |  |
Revenues: |  |  |  |
Revenues | 10,788 | 10,386 | 32,988 | 30,542
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments |  |  |  |
Segment profit | 152 | 64 | 534 | 673
Maintenance capital | 2 | 7 | 6 | 17
Interest expense related to hedged inventory | 4 | 8 | 11 | 21
Operating Segments |  |  |  |
Revenues: |  |  |  |
Revenues | 11,498 | 11,044 | 35,101 | 32,638
Operating Segments | Transportation |  |  |  |
Revenues: |  |  |  |
Revenues | 424 | 378 | 1,222 | 1,111
Operating Segments | Facilities |  |  |  |
Revenues: |  |  |  |
Revenues | 281 | 280 | 858 | 983
Operating Segments | Supply and Logistics |  |  |  |
Revenues: |  |  |  |
Revenues | 10,793 | 10,386 | 33,021 | 30,544
Intersegment |  |  |  |
Revenues: |  |  |  |
Revenues | (371) | (341) | (1,096) | (1,021)
Intersegment | Transportation |  |  |  |
Revenues: |  |  |  |
Revenues | (226) | (199) | (648) | (594)
Intersegment | Facilities |  |  |  |
Revenues: |  |  |  |
Revenues | (140) | (142) | (415) | (425)
Intersegment | Supply and Logistics |  |  |  |
Revenues: |  |  |  |
Revenues | $ (5) |  | $ (33) | $ (2)

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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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