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Reportable Segments Revenues (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Revenues |  |  |
Revenues | $ 14,144 | $ 13,705 | $ 13,058
Natural Gas Pipelines |  |  |
Revenues |  |  |
Revenues | 9,015 |  |
Products Pipelines |  |  |
Revenues |  |  |
Revenues | 1,713 |  |
Terminals |  |  |
Revenues |  |  |
Revenues | 2,019 |  |
CO2 |  |  |
Revenues |  |  |
Revenues | 1,255 |  |
Kinder Morgan Canada |  |  |
Revenues |  |  |
Revenues | 170 |  |
Single customer exceeding 10% of total [Member] |  |  |
Revenues |  |  |
Revenues | 0 | 0 | 0
Operating Segments | Products Pipelines |  |  |
Revenues |  |  |
Revenues | 1,699 | 1,645 | 1,631
Operating Segments | Kinder Morgan Canada |  |  |
Revenues |  |  |
Revenues | 170 | 256 | 253
Operating Segments | External Customer [Member] | Natural Gas Pipelines |  |  |
Revenues |  |  |
Revenues | 9,004 | 8,608 | 7,998
Operating Segments | External Customer [Member] | Terminals |  |  |
Revenues |  |  |
Revenues | 2,017 | 1,965 | 1,921
Operating Segments | External Customer [Member] | CO2 |  |  |
Revenues |  |  |
Revenues | 1,255 | 1,196 | 1,221
Operating Segments | Intersegment revenues | Natural Gas Pipelines |  |  |
Revenues |  |  |
Revenues | 11 | 10 | 7
Operating Segments | Intersegment revenues | Products Pipelines |  |  |
Revenues |  |  |
Revenues | 14 | 16 | 18
Operating Segments | Intersegment revenues | Terminals |  |  |
Revenues |  |  |
Revenues | 2 | 1 | 1
Corporate, Non-Segment and intersegment eliminations |  |  |
Revenues |  |  |
Revenues | $ (28) | $ 8 | $ 8
Revenues from External Customers [Member] |  |  |
Revenues |  |  |
Concentration Risk, Percentage | 10.00% | 10.00% | 10.00%
Affiliated Entity [Member] |  |  |
Revenues |  |  |
Revenues | $ 265 | $ 162 | $ 142
Affiliated Entity [Member] | Corporate, Non-Segment and intersegment eliminations |  |  |
Revenues |  |  |
Revenues |  | $ 35 | $ 34

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