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Reportable Segments Revenues (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Revenues |  |  |
Revenues | $ 13,705 | $ 13,058 | $ 14,403
Single customer exceeding 10% of total [Member] |  |  |
Revenues |  |  |
Revenues | 0 | 0 | 0
Operating Segments | CO2 |  |  |
Revenues |  |  |
Revenues | 1,196 | 1,221 | 1,699
Operating Segments | Kinder Morgan Canada |  |  |
Revenues |  |  |
Revenues | 256 | 253 | 260
Operating Segments | External Customer [Member] | Natural Gas Pipelines |  |  |
Revenues |  |  |
Revenues | 8,608 | 7,998 | 8,704
Operating Segments | External Customer [Member] | Terminals |  |  |
Revenues |  |  |
Revenues | 1,965 | 1,921 | 1,878
Operating Segments | External Customer [Member] | Products Pipelines |  |  |
Revenues |  |  |
Revenues | 1,645 | 1,631 | 1,828
Operating Segments | Intersegment revenues | Natural Gas Pipelines |  |  |
Revenues |  |  |
Revenues | 10 | 7 | 21
Operating Segments | Intersegment revenues | Terminals |  |  |
Revenues |  |  |
Revenues | 1 | 1 | 1
Operating Segments | Intersegment revenues | Products Pipelines |  |  |
Revenues |  |  |
Revenues | 16 | 18 | 3
Corporate, Non-Segment and intersegment eliminations |  |  |
Revenues |  |  |
Revenues | $ 8 | $ 8 | $ 9
Revenues from External Customers [Member] |  |  |
Revenues |  |  |
Concentration Risk, Percentage | 10.00% | 10.00% | 10.00%

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