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v3.19.1

NONCONTROLLING INTERESTS - NONCONTROLLING INFORMATION (Details) $ / shares in Units, $ / shares in Units, $ in Millions |  |  |  |  |  | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 17, 2018 $ / shares | Jan. 22, 2018 shares | Jun. 28, 2017 USD ($) | Apr. 28, 2017 CAD ($) | Apr. 27, 2017 USD ($) $ / shares shares | Sep. 30, 2018 CAD ($) | Sep. 30, 2018 CAD ($) | Dec. 31, 2018 CAD ($) | Dec. 31, 2017 CAD ($) | Dec. 31, 2016 CAD ($) | Aug. 01, 2018 | Apr. 28, 2017 $ / shares | Feb. 15, 2017
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, decrease from purchase of interests |  |  |  |  |  |  |  | $ 4,469,000,000 | $ 0 | $ 0 |  |  |
Noncontrolling interests |  |  |  |  |  |  |  | 3,965,000,000 | 7,597,000,000 |  |  |  |
Enbridge Gas Distribution Inc. |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interests |  |  |  |  |  |  |  | $ 0 | 100,000,000 |  |  |  |
Spectra Energy Partners, LP |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Security shareholders entitlement share ratio |  |  |  |  |  |  |  | 1.111 |  |  |  |  |
Stock issued during period, shares, conversion of units (in shares) | shares |  | 172,500,000 |  |  |  |  |  |  |  |  |  |  |
Enbridge Energy Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Security shareholders entitlement share ratio |  |  |  |  |  |  |  | 0.335 |  |  |  |  |
Noncontrolling interests |  |  |  |  |  |  |  | $ 0 | 138,000,000 |  |  |  |
Common units, quarterly distribution per unit | $ / shares |  |  |  |  | $ 0.583 |  |  |  |  |  |  | $ 0.35 |
Enbridge Energy Management, L.L.C. (EEM) |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Security shareholders entitlement share ratio |  |  |  |  |  |  |  | 0.335 |  |  |  |  |
Noncontrolling interests |  |  |  |  |  |  |  | $ 0 | 34,000,000 |  |  |  |
Enbridge Income Fund Holdings Inc |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Security shareholders entitlement share ratio | 0.735 |  |  |  |  |  |  |  |  |  |  |  |
Shareholder entitlement cash payment per share | $ / shares | $ 0.45 |  |  |  |  |  |  |  |  |  |  |  |
Strategic Review Actions | Enbridge Energy Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Increase to additional paid in capital |  |  |  | $ 421,000,000 |  |  |  |  |  |  |  |  |
Increase (decrease) to deferred income taxes |  |  |  | 253,000,000 |  |  |  |  |  |  |  |  |
Increase (decrease) in noncontrolling interest |  |  |  | $ 458,000,000 |  |  |  |  |  |  |  |  |
Enbridge Inc. | Enbridge Energy Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of related party debt |  |  |  |  | $ 1,500 |  |  |  |  |  |  |  |
Enbridge Energy Partners and Enbridge Energy Management |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Increase to additional paid in capital |  |  |  |  |  |  |  | 3,700,000,000 |  |  |  |  |
Increase (decrease) to deferred income taxes |  |  |  |  |  |  |  | (707,000,000) |  |  |  |  |
Increase (decrease) in noncontrolling interest |  |  |  |  |  |  |  | 185,000,000 |  |  |  |  |
Spectra Energy Partners, LP |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, decrease from purchase of interests |  |  |  |  |  |  |  | 3,000,000,000 |  |  |  |  |
Increase to additional paid in capital |  |  |  |  |  |  |  | 642,000,000 |  |  |  |  |
Increase (decrease) to deferred income taxes |  |  |  |  |  |  |  | (167,000,000) |  |  |  |  |
Midcoast Energy Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Total ownership interest (as a percent) |  |  | 100.00% |  |  |  |  |  |  |  |  |  |
Midcoast Energy Partners, L.P. | Midcoast Public Unitholders |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase price |  |  |  |  | 170 |  |  |  |  |  |  |  |
Midcoast Energy Partners, L.P. | Enbridge Energy Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to acquire businesses, gross |  |  | $ 1,300 |  |  |  |  |  |  |  |  |  |
Liabilities assumed |  |  | $ 953 |  |  |  |  |  |  |  |  |  |
Enbridge Income Fund |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, decrease from purchase of interests |  |  |  |  |  |  |  | 4,500,000,000 |  |  |  |  |
Increase to additional paid in capital |  |  |  |  |  |  |  | 25,000,000 |  |  |  |  |
Increase (decrease) to deferred income taxes |  |  |  |  |  |  |  | 0 |  |  |  |  |
Preferred Units Series1 | Enbridge Inc. | Enbridge Energy Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Partners' capital account, redemptions |  |  |  |  | $ 1,200 |  |  |  |  |  |  |  |
Common Units Class A | Enbridge Inc. | Enbridge Energy Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Partners' capital account, units, sold in private placement | shares |  |  |  |  | 64,300,000 |  |  |  |  |  |  |  |
Common Units Class D | Enbridge Inc. | Enbridge Energy Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Common units rights waived, number of units | shares |  |  |  |  | 66,100,000 |  |  |  |  |  |  |  |
Incentive Distribution Units | Enbridge Inc. | Enbridge Energy Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Common units rights waived, number of units | shares |  |  |  |  | 1,000 |  |  |  |  |  |  |  |
Common Units Class F | Enbridge Energy Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Common units distribution percentage above first threshold |  |  |  |  | 13.00% |  |  |  |  |  |  |  |
Common units first distribution threshold | $ / shares |  |  |  |  | $ 0.295 |  |  |  |  |  |  |  |
Common units second distribution threshold | $ / shares |  |  |  |  | $ 0.35 |  |  |  |  |  |  |  |
Common units distribution percentage above second threshold |  |  |  |  | 23.00% |  |  |  |  |  |  |  |
Common Units Class F | Enbridge Inc. | Enbridge Energy Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Partners' capital account, units, sold in private placement | shares |  |  |  |  | 1,000 |  |  |  |  |  |  |  |
Bakken Pipeline System |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Joint funding arrangement, ownership percentage |  |  |  |  | 75.00% |  |  |  |  |  |  |  |
Ownership interest (as a percent) |  |  |  |  | 27.60% |  |  |  |  |  |  |  |
Bakken Pipeline System | Enbridge Energy Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Joint funding arrangement, ownership percentage |  |  |  |  | 25.00% |  |  |  |  |  |  |  |
Ownership interest (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  | 27.60%
Joint funding arrangement, period of option to purchase additional interest |  |  |  |  | 5 years |  |  |  |  |  |  |  |
Joint funding arrangement, additional interest under option |  |  |  |  | 20.00% |  |  |  |  |  |  |  |
Common shares |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Common shares issued in acquisition, amount |  |  |  |  |  |  |  | 12,727,000,000 |  |  |  |  |
Common shares | Enbridge Energy Partners, L.P. |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Common shares issued in acquisition, amount |  |  |  |  |  |  |  | 3,042,000,000 | 0 | 0 |  |  |
Common shares | Enbridge Energy Management, L.L.C. (EEM) |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Common shares issued in acquisition, amount |  |  |  |  |  |  |  | 1,267,000,000 | 0 | 0 |  |  |
Common shares | Spectra Energy Partners, LP |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Common shares issued in acquisition, amount |  |  |  |  |  |  |  | 3,888,000,000 | 0 | 0 |  |  |
Common shares | Enbridge Income Fund |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Common shares issued in acquisition, amount |  |  |  |  |  |  |  | 4,530,000,000 | $ 0 | $ 0 |  |  |
Noncontrolling Interest |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, decrease from purchase of interests |  |  |  |  |  |  |  | 2,657,000,000 |  |  |  |  |
Sale of noncontrolling interest in subsidiaries |  |  |  |  |  | $ (1,183,000,000) |  | 1,183,000,000 |  |  |  |  |
Noncontrolling interest, restructuring |  |  |  |  |  |  | $ 1,500,000,000 | 1,486,000,000 |  |  |  |  |
Additional paid-in capital |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of noncontrolling interest in subsidiaries |  |  |  |  |  | 79,000,000 |  | 79,000,000 |  |  |  |  |
Dilution gain on Spectra Energy Partners, LP restructuring (Note 20) |  |  |  |  |  |  | 1,100,000,000 | $ 1,136,000,000 |  |  |  |  |
Deferred Income Tax Liability |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of noncontrolling interest in subsidiaries |  |  |  |  |  | $ 27,000,000 |  |  |  |  |  |  |
Canadian Renewable Assets | Discontinued Operations, Disposed of by Sale |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, ownership percentage by parent |  |  |  |  |  |  |  |  |  |  | 49.00% |  |
United States Renewable Assets | Discontinued Operations, Disposed of by Sale |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, ownership percentage by parent |  |  |  |  |  |  |  |  |  |  | 49.00% |  |
Spectra Energy Partners, LP |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, ownership percentage by parent |  |  |  |  |  |  |  |  | 75.00% |  |  |  |
Incentive Distribution Rights | Spectra Energy Partners, LP |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, ownership percentage by parent |  |  |  |  |  |  |  |  | 100.00% |  |  |  |
Enbridge Income Fund |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest percentage held by noncontrolling owners |  |  |  |  |  |  |  |  | 56.50% | 45.60% |  |  |
Variable Interest Entity, Primary Beneficiary |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Shares owned (in shares) | shares |  | 403,000,000 |  |  |  |  |  |  |  |  |  |  |
Direct common interest (as a percent) |  | 83.00% |  |  |  |  |  |  |  |  |  |  |
Other Restructuring | Spectra Energy Partners, LP |  |  |  |  |  |  |  |  |  |  |  |  |
NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) to deferred income taxes |  |  |  |  |  |  | $ 333,000,000 |  |  |  |  |  |

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