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DEBT - Credit Facilities (Narrative) (Details) $ in Millions, ¥ in Billions |  |  |  |  |  |  |  |  | 2 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 16, 2022 CAD ($) | Jun. 23, 2022 CAD ($) | May 17, 2022 CAD ($) | Feb. 10, 2022 CAD ($) | Jan. 19, 2022 CAD ($) | Jul. 23, 2021 CAD ($) | Feb. 25, 2021 CAD ($) loan | Feb. 10, 2021 CAD ($) | Aug. 31, 2022 CAD ($) | Dec. 31, 2022 CAD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2022 USD ($) | Jul. 31, 2022 CAD ($) | May 24, 2022 USD ($) | May 17, 2022 JPY (¥) | Dec. 31, 2021 CAD ($)
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |  |  |  | $ 72,939,000,000 |  |  |  |  |  | $ 67,961,000,000
Principal amount |  |  |  |  |  |  |  |  |  | 3,400,000,000 |  | $ 3,200 |  |  |  |
Extinguishment of debt |  |  |  |  |  |  |  |  |  | 1,500,000,000 | $ 2,000 |  |  |  |  |
Enbridge Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility capacity |  |  |  |  |  |  |  |  |  | 10,987,000,000 |  |  |  |  |  |
Unutilized credit facility |  |  |  |  |  |  |  |  |  | 3,003,000,000 |  |  |  |  |  |
US dollar senior notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extinguishment of debt |  |  |  |  |  |  | $ 500,000,000 |  |  |  |  |  |  |  |  |
Number of term loans repaid | loan |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |  |
Sustainability-linked bonds | Enbridge Inc. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility capacity |  |  |  | $ 1,000,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Term of credit facility |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |
Commercial paper and credit facility draws |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |  |  |  | 10,500,000,000 |  |  |  |  |  | 11,300,000,000
364-Day Extendible Credit Facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility capacity |  | $ 5,500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term of credit facility |  | 364 days |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term out option period |  | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |
10-year Fixed-To-Fixed Subordinated Notes | Subordinated Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term of credit facility |  |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  | $ 750,000,000 |  |  |  |  |  |  |  |  |  |  |
Term Loan Maturing In May 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term of credit facility | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Uncommitted Credit Facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility capacity |  |  |  |  |  |  |  |  |  | 1,300,000,000 |  |  |  |  |  | 1,300,000,000
Unutilized credit facility |  |  |  |  |  |  |  |  |  | $ 689,000,000 |  |  |  |  |  | $ 854,000,000
Weighted average standby fee (as a percent) |  |  |  |  |  |  |  |  |  | 0.10% | 0.10% |  |  |  |  |
Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, increase (decrease) |  |  |  |  |  |  |  |  | $ 640,000,000 |  |  |  |  |  |  |
Revolving Credit Facility | Sustainability-linked Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility capacity |  |  |  | $ 1,000,000,000 |  |  |  | $ 1,000,000,000 | $ 12,700,000,000 |  |  |  | $ 12,700,000,000 |  |  |
Term of credit facility |  |  |  | 3 years |  |  |  | 3 years |  |  |  |  |  |  |  |
Revolving Credit Facility | Syndicated Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term of credit facility |  |  |  |  |  |  |  | 1 year |  |  |  |  |  |  |  |
Extinguishment of debt |  |  |  |  |  |  |  | $ 3,000,000,000 |  |  |  |  |  |  |  |
Revolving Credit Facility | Five-Year Credit Facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility capacity |  |  |  |  |  | $ 8,000,000,000 |  |  |  |  |  |  |  |  |  |
Term of credit facility |  |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | 364-Day Extendible Credit Facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility capacity |  |  |  |  |  | $ 10,000,000,000 |  |  |  |  |  |  |  |  |  |
Term of credit facility |  |  |  |  |  | 364 days |  |  |  |  |  |  |  |  |  |
Maturity period |  |  |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |
Term Loan Maturing In May 2025 | Five-Year Credit Facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility capacity | $ 479,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan Maturing In May 2025 | Three Year Term Loan | US dollar senior notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility capacity |  |  | $ 806,000,000 |  |  |  |  |  |  |  |  |  |  |  | ¥ 84.8 |
Term of credit facility |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |
Term Loan Maturing In 2023 | 364-Day Term Loan | US dollar senior notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility capacity |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,900 |  |
Term Loan Matured In May 2022 | US dollar senior notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility capacity |  |  | $ 499,000,000 |  |  |  |  |  |  |  |  |  |  |  | ¥ 52.5 |

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