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Reportable Segments Reportable Segments Assets (Details) - USD ($) $ in Millions | Jun. 30, 2016 | Dec. 31, 2015
--- | --- | ---
Segment Reporting Information [Line Items] |  |
Assets | $ 84,317 | $ 84,104
Disposal Group, Including Discontinued Operation, Other Assets | 27 | 19
Natural Gas Pipelines |  |
Segment Reporting Information [Line Items] |  |
Assets | 53,677 | 53,704
CO2 |  |
Segment Reporting Information [Line Items] |  |
Assets | 4,317 | 4,706
Terminals |  |
Segment Reporting Information [Line Items] |  |
Assets | 9,673 | 9,083
Products Pipelines |  |
Segment Reporting Information [Line Items] |  |
Assets | 8,360 | 8,464
Kinder Morgan Canada |  |
Segment Reporting Information [Line Items] |  |
Assets | 1,586 | 1,434
Other |  |
Segment Reporting Information [Line Items] |  |
Assets | 317 | 418
Total segment assets |  |
Segment Reporting Information [Line Items] |  |
Assets | 77,930 | 77,809
Corporate Segment [Member] |  |
Segment Reporting Information [Line Items] |  |
Assets | $ 6,360 | $ 6,276

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