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DEBT - Schedule of Long-Term Debt Repayments (Details) € in Millions, $ in Millions, $ in Millions | 1 Months Ended | 7 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2024 USD ($) | Dec. 31, 2024 CAD ($) | Nov. 30, 2024 CAD ($) | Sep. 30, 2024 CAD ($) | Aug. 31, 2024 CAD ($) | Jul. 31, 2024 USD ($) | Jun. 30, 2024 USD ($) | Mar. 31, 2024 USD ($) | Feb. 29, 2024 USD ($) | Feb. 29, 2024 CAD ($) | Dec. 31, 2024 USD ($) | Oct. 31, 2024 EUR (€) | Dec. 31, 2024 USD ($) | Dec. 31, 2024 CAD ($) | Dec. 31, 2024 EUR (€)
Long-Term Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extinguishment of debt |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,900 | $ 1,400 | € 43
Enbridge Gas Inc. | 3.15% medium-term notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  | 3.15% |  |  |  |  |  |  |  |  |  |
Extinguishment of debt |  |  |  |  | $ 215 |  |  |  |  |  |  |  |  |  |
Enbridge Gas Inc. | 9.85% debentures |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) | 9.85% | 9.85% |  |  |  |  |  |  |  |  | 9.85% |  | 9.85% | 9.85% | 9.85%
Extinguishment of debt |  | $ 85 |  |  |  |  |  |  |  |  |  |  |  |  |
Enbridge Pipelines (Southern Lights) L.L.C. | 3.98% Senior Notes Due 2040 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) | 3.98% | 3.98% |  |  |  |  |  |  |  |  | 3.98% |  | 3.98% | 3.98% | 3.98%
Extinguishment of debt |  |  |  |  |  |  |  |  |  |  | $ 89 |  |  |  |
Enbridge Pipelines Inc. | 8.20% Debentures |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  |  |  |  |  | 8.20% | 8.20% |  |  |  |  |
Extinguishment of debt |  |  |  |  |  |  |  |  |  | $ 200 |  |  |  |  |
Enbridge Southern Lights LP | 4.01% Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) | 4.01% | 4.01% |  |  |  |  |  |  |  |  | 4.01% |  | 4.01% | 4.01% | 4.01%
Extinguishment of debt |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 31 |
Westcoast Energy Inc. | 3.43% Medium-Term Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  | 3.43% |  |  |  |  |  |  |  |  |  |  |
Extinguishment of debt |  |  |  | $ 350 |  |  |  |  |  |  |  |  |  |  |
Spectra Energy Partners, LP | 4.75% Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  |  |  |  | 4.75% |  |  |  |  |  |  |
Extinguishment of debt |  |  |  |  |  |  |  | $ 1,000 |  |  |  |  |  |  |
Blauracke GmbH | 2.10% Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  | 2.10% |  |  |
Extinguishment of debt | € |  |  |  |  |  |  |  |  |  |  |  | € 43 |  |  |
Algonquin Gas Transmission, LLC | 3.51% senior notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  |  | 3.51% |  |  |  |  |  |  |  |  |
Extinguishment of debt |  |  |  |  |  | $ 350 |  |  |  |  |  |  |  |  |
Questar Gas Company | 2.98% senior notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) | 2.98% | 2.98% |  |  |  |  |  |  |  |  | 2.98% |  | 2.98% | 2.98% | 2.98%
Extinguishment of debt | $ 40 |  |  |  |  |  |  |  |  |  |  |  |  |  |
East Tennessee Natural Gas, LLC | 3.10% senior notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) | 3.10% | 3.10% |  |  |  |  |  |  |  |  | 3.10% |  | 3.10% | 3.10% | 3.10%
Extinguishment of debt | $ 190 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Enbridge Inc. | 2.15% Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  |  |  |  |  | 2.15% | 2.15% |  |  |  |  |
Extinguishment of debt |  |  |  |  |  |  |  |  | $ 400 |  |  |  |  |  |
Enbridge Inc. | 5.97% Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  |  |  |  | 5.97% |  |  |  |  |  |  |
Extinguishment of debt |  |  |  |  |  |  |  | $ 700 |  |  |  |  |  |  |
Debt instrument, callable term |  |  |  |  |  |  |  | 1 year |  |  |  |  |  |  |
Enbridge Inc. | 3.50% Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  |  |  | 3.50% |  |  |  |  |  |  |  |
Extinguishment of debt |  |  |  |  |  |  | $ 500 |  |  |  |  |  |  |  |
Enbridge Inc. | 3.95% Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  | 3.95% |  |  |  |  |  |  |  |  |  |  |  |
Extinguishment of debt |  |  | $ 500 |  |  |  |  |  |  |  |  |  |  |  |
Enbridge Inc. | Floating Rate Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extinguishment of debt |  |  |  |  |  |  |  |  | $ 600 |  |  |  |  |  |
Basis spread on variable rate (as percent) |  |  |  |  |  |  |  |  |  |  |  |  | 0.63% | 0.63% | 0.63%

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