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Reportable Segments Other, net-income(expense) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Segment Reporting Information [Line Items] |  |  |
Other, net | $ 107 | $ 97 | $ 78
Operating Segments | Natural Gas Pipelines |  |  |
Segment Reporting Information [Line Items] |  |  |
Other, net | 37 | 49 | 19
Operating Segments | Products Pipelines |  |  |
Segment Reporting Information [Line Items] |  |  |
Other, net | 3 | (1) | 2
Operating Segments | Terminals |  |  |
Segment Reporting Information [Line Items] |  |  |
Other, net | 2 | 8 | 4
Operating Segments | Kinder Morgan Canada |  |  |
Segment Reporting Information [Line Items] |  |  |
Other, net | 26 | 25 | 15
Corporate, Non-Segment |  |  |
Segment Reporting Information [Line Items] |  |  |
Other, net | $ 39 | $ 16 | $ 38

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- Definition Amount of income (expense) related to nonoperating activities, classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.9) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 + Details
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