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VARIABLE INTEREST ENTITIES - Schedule of the Carrying Amount of Interest in VIEs (Details) - CAD ($) $ in Millions |  | 12 Months Ended |
--- | --- | --- | ---
Mar. 18, 2018 | Dec. 31, 2021 | Dec. 31, 2020
VARIABLE INTEREST ENTITY |  |  |
Affiliate loan receivable |  | $ 954 | $ 1,108
EIH S.a.r.l. |  |  |
VARIABLE INTEREST ENTITY |  |  |
Ownership interest in subsidiary (as a percent) | 49.00% | 49.00% |
Variable Interest Entity, Not Primary Beneficiary |  |  |
VARIABLE INTEREST ENTITY |  |  |
Carrying Amount of Investment in VIE |  | $ 1,054 | 1,351
Maximum Exposure to Loss |  | 4,288 | 5,424
Variable Interest Entity, Not Primary Beneficiary | Aux Sable Liquid Products L.P. |  |  |
VARIABLE INTEREST ENTITY |  |  |
Carrying Amount of Investment in VIE |  | 113 | 106
Maximum Exposure to Loss |  | 195 | 187
Variable Interest Entity, Not Primary Beneficiary | Eolien Maritime France SAS |  |  |
VARIABLE INTEREST ENTITY |  |  |
Carrying Amount of Investment in VIE |  | 38 | 96
Maximum Exposure to Loss |  | 664 | 949
Affiliate loan receivable |  | 73 | 132
Variable Interest Entity, Not Primary Beneficiary | Enbridge Renewable Infrastructure Investments S.a.r.l. (ERII) |  |  |
VARIABLE INTEREST ENTITY |  |  |
Carrying Amount of Investment in VIE |  | 54 | 100
Maximum Exposure to Loss |  | 2,121 | 2,516
Affiliate loan receivable |  | 807 | 904
Variable Interest Entity, Not Primary Beneficiary | PennEast Pipeline Company, LLC |  |  |
VARIABLE INTEREST ENTITY |  |  |
Carrying Amount of Investment in VIE |  |  | 116
Maximum Exposure to Loss |  |  | 371
Variable Interest Entity, Not Primary Beneficiary | Rampion Offshore Wind Limited |  |  |
VARIABLE INTEREST ENTITY |  |  |
Carrying Amount of Investment in VIE |  | 450 | 599
Maximum Exposure to Loss |  | 508 | 650
Variable Interest Entity, Not Primary Beneficiary | Vector Pipeline L.P. |  |  |
VARIABLE INTEREST ENTITY |  |  |
Carrying Amount of Investment in VIE |  | 189 | 201
Maximum Exposure to Loss |  | 374 | 390
Affiliate loan receivable |  | 80 | 84
Credit facility provided |  | 105 | 105
Variable Interest Entity, Not Primary Beneficiary | Other |  |  |
VARIABLE INTEREST ENTITY |  |  |
Carrying Amount of Investment in VIE |  | 210 | 133
Maximum Exposure to Loss |  | $ 426 | $ 361

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