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Reportable Segments Reportable Segments Revenues (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Segment Reporting Information [Line Items] |  |  |  |
Revenues | $ 3,144 | $ 3,463 | $ 6,339 | $ 7,060
Other revenues | 632 | 823 | 1,170 | 1,665
Less: Total intersegment revenues |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | (5) | (7) | (11) | (10)
Natural Gas Pipelines | Revenues from external customers |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 1,882 | 2,091 | 3,852 | 4,268
Natural Gas Pipelines | Intersegment revenues |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 1 | 5 | 2 | 8
CO2 |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 304 | 353 | 606 | 799
Terminals | Revenues from external customers |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 487 | 469 | 952 | 926
Terminals | Intersegment revenues |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 1 | 1 | 1 | 1
Products Pipelines | Revenues from external customers |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 398 | 477 | 789 | 921
Products Pipelines | Intersegment revenues |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 3 | 1 | 8 | 1
Kinder Morgan Canada |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 63 | 65 | 122 | 125
Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 1 | (1) | 1 | 3
Total segment revenues |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenues | 3,140 | 3,461 | 6,333 | 7,052
Unallocated [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Other revenues | $ 9 | $ 9 | $ 17 | $ 18

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