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Operating Segments - Segment Financial Data (Details) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 USD ($) | Sep. 30, 2016 USD ($) | Sep. 30, 2017 USD ($) segment | Sep. 30, 2016 USD ($)
Segment Reporting Information [Line Items] |  |  |  |
Operating segments number | segment |  |  | 3 |
Revenues: |  |  |  |
Revenues | $ 5,873 | $ 5,170 | $ 18,618 | $ 14,231
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments |  |  |  |
Equity earnings in unconsolidated entities | 80 | 46 | 201 | 133
Segment adjusted EBITDA | 489 | 462 | 1,451 | 1,568
Maintenance capital | 63 | 47 | 194 | 128
Transportation |  |  |  |
Revenues: |  |  |  |
Revenues | 274 | 227 | 757 | 711
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments |  |  |  |
Equity earnings in unconsolidated entities | 80 | 46 | 201 | 133
Segment adjusted EBITDA | 363 | 308 | 933 | 863
Maintenance capital | 32 | 29 | 89 | 86
Facilities |  |  |  |
Revenues: |  |  |  |
Revenues | 140 | 135 | 410 | 405
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments |  |  |  |
Segment adjusted EBITDA | 182 | 171 | 550 | 497
Maintenance capital | 28 | 15 | 94 | 32
Supply and Logistics |  |  |  |
Revenues: |  |  |  |
Revenues | 5,573 | 4,876 | 17,749 | 13,344
Segment Reporting, Disclosure of Other Information about Entity's Reportable Segments |  |  |  |
Segment adjusted EBITDA | (56) | (17) | (32) | 208
Maintenance capital | 3 | 3 | 11 | 10
Operating Segments |  |  |  |
Revenues: |  |  |  |
Revenues | 6,311 | 5,562 | 19,890 | 15,358
Operating Segments | Transportation |  |  |  |
Revenues: |  |  |  |
Revenues | 446 | 401 | 1,260 | 1,188
Operating Segments | Facilities |  |  |  |
Revenues: |  |  |  |
Revenues | 291 | 282 | 873 | 817
Operating Segments | Supply and Logistics |  |  |  |
Revenues: |  |  |  |
Revenues | 5,574 | 4,879 | 17,757 | 13,353
Intersegment |  |  |  |
Revenues: |  |  |  |
Revenues | (438) | (392) | (1,272) | (1,127)
Intersegment | Transportation |  |  |  |
Revenues: |  |  |  |
Revenues | (172) | (174) | (503) | (477)
Intersegment | Facilities |  |  |  |
Revenues: |  |  |  |
Revenues | (151) | (147) | (463) | (412)
Intersegment | Supply and Logistics |  |  |  |
Revenues: |  |  |  |
Revenues | (1) | (3) | (8) | (9)
Intersegment Adjustment |  |  |  |
Revenues: |  |  |  |
Revenues | $ (114) | $ (68) | $ (298) | $ (229)

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- Definition Capital expenditures for the replacement of partially or fully depreciated assets in order to maintain the operating and/or earnings capacity of the company's existing assets. + References No definition available. + Details
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- Definition Revenues and equity earnings in unconsolidated entities less (a) purchases and related costs, (b) field operating costs and (c) segment general and administrative expenses, plus the entity’s proportionate share of the depreciation and amortization expense and gains and losses on significant asset sales of unconsolidated entities, and further adjusted for certain selected items including (i) gains or losses on derivative on derivative instruments that are related to underlying activities in another period (or the reversal of such adjustments from a prior period), gains and losses on derivatives that are related to investing activities (such as the purchase of linefill) and inventory valuation adjustments, as applicable, (ii) long-term inventory costing adjustments, (iii) charges for obligations that are expected to be settled with the issuance of equity instruments, (iv) amounts related to deficiencies associated with minimum volume commitments, net of applicable amounts subsequently recognized into revenue and (v) other items that the Chief Operating Decision Maker believes are integral to understand the entity’s core segment operating performance. + References No definition available. + Details
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