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DEBT - Schedule of Long-term Debt Issuances (Details) $ in Millions, $ in Millions | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2024 USD ($) | Dec. 31, 2024 CAD ($) | Aug. 31, 2024 CAD ($) | Jul. 31, 2024 USD ($) | Jun. 30, 2024 USD ($) | Apr. 30, 2024 USD ($)
Long-Term Debt |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Principal amount | $ 5,700 | $ 1,800 |  |  |  |
Enbridge Inc. | 5.25% Senior Notes Due April 2027 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  |  | 5.25%
Principal amount |  |  |  |  |  | $ 750
Enbridge Inc. | 5.30% Senior Notes Due April 2029 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  |  | 5.30%
Principal amount |  |  |  |  |  | $ 750
Enbridge Inc. | 5.63% Senior Notes Due April 2034 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  |  | 5.63%
Principal amount |  |  |  |  |  | $ 1,200
Enbridge Inc. | 5.95% Senior Notes Due April 2054 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  |  | 5.95%
Principal amount |  |  |  |  |  | $ 800
Enbridge Inc. | Fixed-to-Fixed Subordinated Notes Due March 2055 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  | 7.38% |
Principal amount |  |  |  |  | $ 500 |
Enbridge Inc. | Fixed-to-Fixed Subordinated Note Due June 2054 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  | 7.20% |
Principal amount |  |  |  |  | $ 700 |
Enbridge Inc. | 4.21% medium-term notes due February 2030 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate (as a percent) |  |  | 4.21% |  |  |
Principal amount |  |  | $ 600 |  |  |
Enbridge Inc. | 4.73% medium-term notes due August 2034 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate (as a percent) |  |  | 4.73% |  |  |
Principal amount |  |  | $ 800 |  |  |
Enbridge Inc. | 5.32% medium-term notes due August 2054 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate (as a percent) |  |  | 5.32% |  |  |
Principal amount |  |  | $ 400 |  |  |
Enbridge Inc. | Initial Period | Fixed-to-Fixed Subordinated Notes Due March 2055 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Term of credit facility | 5 years 6 months |  |  |  |  |
Enbridge Inc. | Initial Period | Fixed-to-Fixed Subordinated Note Due June 2054 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Term of credit facility | 9 years 9 months |  |  |  |  |
Enbridge Inc. | Period Two | Fixed-to-Fixed Subordinated Notes Due March 2055 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate (as percent) | 3.12% |  |  |  |  |
Enbridge Inc. | Period Two | Fixed-to-Fixed Subordinated Note Due June 2054 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Basis spread on variable rate (as percent) | 2.97% |  |  |  |  |
Algonquin Gas Transmission, LLC | 5.95% senior notes due July 2034 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate (as a percent) |  |  |  | 5.95% |  |
Principal amount |  |  |  | $ 350 |  |
East Tennessee Natural Gas, LLC | 5.73% senior notes due December 2034 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate (as a percent) | 5.72% | 5.72% |  |  |  |
Principal amount | $ 460 |  |  |  |  |
Questar Gas Company | 5.33% senior notes due December 2034 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate (as a percent) | 5.33% | 5.33% |  |  |  |
Principal amount | $ 200 |  |  |  |  |

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