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LONG-TERM INVESTMENTS - Schedule of Long-Term Investments (Details) - CAD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
LONG-TERM INVESTMENTS |  |
Total long-term investments | $ 13,818 | $ 16,528
Noverco Common Shares | Gas Distribution and Storage | Preference shares (Note 21) |  |
LONG-TERM INVESTMENTS |  |
OTHER LONG-TERM INVESTMENTS | 567 | 580
DCP Midstream, LP |  |
LONG-TERM INVESTMENTS |  |
EQUITY INVESTMENTS | $ 331 |
MarEn Bakken Company LLC1 | Liquids Pipelines |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 75.00% |
EQUITY INVESTMENTS | $ 1,795 | 1,892
MarEn Bakken Company LLC1 | Bakken Pipeline Investments, LLC |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 49.00% |
MarEn Bakken Company LLC1 | Bakken Pipeline System |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 27.60% |
Gray Oak Holdings LLC | Liquids Pipelines |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 35.00% |
EQUITY INVESTMENTS | $ 502 | 463
Seaway Crude Holdings LLC | Liquids Pipelines |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 50.00% |
EQUITY INVESTMENTS | $ 2,668 | 2,907
Illinois Extension Pipeline Company, LLC | Liquids Pipelines |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 65.00% |
EQUITY INVESTMENTS | $ 623 | 662
Other | Liquids Pipelines |  |
LONG-TERM INVESTMENTS |  |
EQUITY INVESTMENTS | $ 73 | 73
Other | Liquids Pipelines | Minimum |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 30.00% |
Other | Liquids Pipelines | Maximum |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 43.80% |
Other | Gas Transmission and Midstream |  |
LONG-TERM INVESTMENTS |  |
EQUITY INVESTMENTS | $ 4 | 5
Other | Gas Transmission and Midstream | Minimum |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 33.30% |
Other | Gas Transmission and Midstream | Maximum |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 50.00% |
Other | Gas Distribution and Storage | Common Shares |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 50.00% |
EQUITY INVESTMENTS | $ 13 | 14
Other | Renewable Power Generation |  |
LONG-TERM INVESTMENTS |  |
EQUITY INVESTMENTS | $ 196 | 127
Other | Renewable Power Generation | Minimum |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 21.00% |
Other | Renewable Power Generation | Maximum |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 50.00% |
Other | Eliminations and Other |  |
LONG-TERM INVESTMENTS |  |
EQUITY INVESTMENTS | $ 32 | 16
Other | Eliminations and Other | Minimum |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 30.00% |
Other | Eliminations and Other | Maximum |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 50.00% |
Alliance Pipeline | Gas Transmission and Midstream |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 50.00% |
EQUITY INVESTMENTS | $ 269 | 310
Aux Sable4 | Gas Transmission and Midstream |  |
LONG-TERM INVESTMENTS |  |
EQUITY INVESTMENTS | $ 251 | 267
Aux Sable4 | Gas Transmission and Midstream | Minimum |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 42.70% |
Aux Sable4 | Gas Transmission and Midstream | Maximum |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 50.00% |
DCP Midstream, LLC | Gas Transmission and Midstream |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 50.00% |
EQUITY INVESTMENTS | $ 331 | 2,193
DCP Midstream, LLC | DCP Midstream, LP |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 56.50% |
Gulfstream Natural Gas System, L.L.C. | Gas Transmission and Midstream |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 50.00% |
EQUITY INVESTMENTS | $ 1,175 | 1,213
Nexus Gas Transmission, LLC | Gas Transmission and Midstream |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 50.00% |
EQUITY INVESTMENTS | $ 1,745 | 1,778
PennEast Pipeline Company, LLC | Gas Transmission and Midstream |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 20.00% |
EQUITY INVESTMENTS | $ 116 | 106
Sabal Trail Transmission, LLC | Gas Transmission and Midstream |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 50.00% |
EQUITY INVESTMENTS | $ 1,510 | 1,533
Southeast Supply Header, LLC | Gas Transmission and Midstream |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 50.00% |
EQUITY INVESTMENTS | $ 84 | 484
Steckman Ridge, LP | Gas Transmission and Midstream |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 50.00% |
EQUITY INVESTMENTS | $ 90 | 222
Vector Pipeline L.P. | Gas Transmission and Midstream |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 60.00% |
EQUITY INVESTMENTS | $ 201 | 195
Offshore - various joint ventures | Gas Transmission and Midstream |  |
LONG-TERM INVESTMENTS |  |
EQUITY INVESTMENTS | $ 338 | $ 362
Offshore - various joint ventures | Gas Transmission and Midstream | Minimum |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 22.00% |
Offshore - various joint ventures | Gas Transmission and Midstream | Maximum |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 74.30% |
Noverco Common Shares | Gas Distribution and Storage | Common Shares |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 38.90% | 38.90%
EQUITY INVESTMENTS | $ 156 | $ 95
Éolien Maritime France SAS | Renewable Power Generation |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 50.00% |
EQUITY INVESTMENTS | $ 96 | 67
Enbridge Renewable Infrastructure Investments S.a.r.l. (ERII) | Renewable Power Generation |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 51.00% |
EQUITY INVESTMENTS | $ 100 | 141
Rampion Offshore Wind Limited | Renewable Power Generation |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 24.90% |
EQUITY INVESTMENTS | $ 599 | 600
Emerging Technologies and Other | Renewable Power Generation |  |
LONG-TERM INVESTMENTS |  |
OTHER LONG-TERM INVESTMENTS | 32 | 78
Other long-term investments | Eliminations and Other |  |
LONG-TERM INVESTMENTS |  |
OTHER LONG-TERM INVESTMENTS | $ 252 | $ 145
Bakken Pipeline Investments, LLC | Bakken Pipeline System |  |
LONG-TERM INVESTMENTS |  |
Ownership Interest (as a percent) | 75.00% |

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