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GOODWILL GOODWILL - NARRATIVE (Details) - CAD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Feb. 27, 2017
GOODWILL |  |  |  |
Goodwill impairment | $ 1,019 | $ 102 | $ 0 |
Goodwill, write of due to deconsolidation |  | 966 |  |
Goodwill, written off related to sale of business unit | 628 | 29 |  |
Goodwill | 34,459 | 34,457 |  |
Spectra Energy Corp |  |  |  |
GOODWILL |  |  |  |
Goodwill |  |  |  | $ 36,656
Gas Transmission and Midstream |  |  |  |
GOODWILL |  |  |  |
Goodwill impairment | 1,019 | 102 |  |
Goodwill, write of due to deconsolidation |  | 966 |  |
Goodwill, written off related to sale of business unit | 628 | 0 |  |
Goodwill | 20,777 | 20,997 |  |
Liquids Pipelines |  |  |  |
GOODWILL |  |  |  |
Goodwill impairment | 0 | 0 |  |
Goodwill, write of due to deconsolidation |  | 0 |  |
Goodwill, written off related to sale of business unit | 0 | 29 |  |
Goodwill | 8,324 | $ 7,786 |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Midcoast Operating L.P. |  |  |  |
GOODWILL |  |  |  |
Goodwill, write of due to deconsolidation | 262 |  |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Canadian Natural Gas Gathering and Processing Business |  |  |  |
GOODWILL |  |  |  |
Goodwill, write of due to deconsolidation | 366 |  |  |
Disposal group, held-for-sale, not discontinued operations | Canadian Natural Gas Gathering and Processing Business |  |  |  |
GOODWILL |  |  |  |
Goodwill impairment | 1,019 |  |  |
Goodwill | 55 |  |  |
Disposal group, held-for-sale, not discontinued operations | Enbridge Gas New Brunswick |  |  |  |
GOODWILL |  |  |  |
Goodwill | $ 133 |  |  |

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