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Goodwill (Tables) | 12 Months Ended
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Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill [Table Text Block] | Changes in the amounts of our goodwill for each of the years ended December 31, 2019 and 2018 are summarized by reporting unit as follows (in millions):
| Natural Gas Pipelines Regulated |  | Natural Gas Pipelines Non-Regulated |  | CO 2 |  | Products Pipelines |  | Products Pipelines Terminals |  | Terminals |  | Kinder Morgan Canada |  | Total
Gross goodwill | $ | 15,892 |  |  | $ | 5,812 |  |  | $ | 1,528 |  |  | $ | 2,125 |  |  | $ | 221 |  |  | $ | 1,572 |  |  | $ | 575 |  |  | $ | 27,725 |
Accumulated impairment losses | (1,643 | ) |  | (1,597 | ) |  | — |  |  | (1,197 | ) |  | (70 | ) |  | (679 | ) |  | (377 | ) |  | (5,563 | )
December 31, 2017 | 14,249 |  |  | 4,215 |  |  | 1,528 |  |  | 928 |  |  | 151 |  |  | 893 |  |  | 198 |  |  | 22,162 |
Currency translation | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (8 | ) |  | (8 | )
Divestitures(a) | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (190 | ) |  | (190 | )
Other | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 1 |  |  | — |  |  | 1 |
December 31, 2018 | 14,249 |  |  | 4,215 |  |  | 1,528 |  |  | 928 |  |  | 151 |  |  | 894 |  |  | — |  |  | 21,965 |
Divestitures(b) | — |  |  | (422 | ) |  | — |  |  | — |  |  | — |  |  | (92 | ) |  | — |  |  | (514 | )
Transfer(c) | — |  |  | (450 | ) |  | — |  |  | 450 |  |  | — |  |  | — |  |  | — |  |  | — |
Gross goodwill | 15,892 |  |  | 4,940 |  |  | 1,528 |  |  | 2,575 |  |  | 221 |  |  | 1,481 |  |  | — |  |  | 26,637 |
Accumulated impairment losses | (1,643 | ) |  | (1,597 | ) |  | — |  |  | (1,197 | ) |  | (70 | ) |  | (679 | ) |  | — |  |  | (5,186 | )
December 31, 2019 | $ | 14,249 |  |  | $ | 3,343 |  |  | $ | 1,528 |  |  | $ | 1,378 |  |  | $ | 151 |  |  | $ | 802 |  |  | $ | — |  |  | $ | 21,451 |
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(a) | 2018 includes $190 million related to the TMPL Sale, including all of the accumulated impairment losses for our Kinder Morgan Canada reporting unit. See Note 3 for more information.
(b) 2019 includes $514 million related to the KML and U.S. Cochin Sale. See Note 3 for more information. (c) Effective January 1, 2019, for segment reporting purposes, certain assets were transferred among our business segments which resulted in the transfer of goodwill from the Natural Gas Pipelines Non-Regulated reporting unit to the Products Pipelines reporting unit. See Note 16 for more information.

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