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DEBT - Long Term Debt Issuance (Details) $ in Millions, $ in Millions | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2024 | Aug. 31, 2024 CAD ($) | Jul. 31, 2024 USD ($) | Jun. 30, 2024 USD ($) | Apr. 30, 2024 USD ($)
Enbridge Inc. | Debt Instrument Interest Rate Terms Period One |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument maturity period (in years) | 5 years 6 months |  |  |  |
Spread on variable rate (in percent) | 3.12% |  |  |  |
Enbridge Inc. | Debt Instrument Interest Rate Terms Period Two |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument maturity period (in years) | 9 years 9 months |  |  |  |
Spread on variable rate (in percent) | 2.97% |  |  |  |
5.25% Senior Notes Due April 2027 | Enbridge Inc. |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate (in percent) |  |  |  |  | 5.25%
Principal Amount |  |  |  |  | $ 750
5.30% Senior Notes Due April 2029 | Enbridge Inc. |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate (in percent) |  |  |  |  | 5.30%
Principal Amount |  |  |  |  | $ 750
5.63% Senior Notes Due April 2034 | Enbridge Inc. |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate (in percent) |  |  |  |  | 5.63%
Principal Amount |  |  |  |  | $ 1,200
5.95% Senior Notes Due April 2054 | Enbridge Inc. |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate (in percent) |  |  |  |  | 5.95%
Principal Amount |  |  |  |  | $ 800
Fixed-to-Fixed Subordinated Notes Due March 2055 | Enbridge Inc. |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate (in percent) |  |  |  | 7.38% |
Principal Amount |  |  |  | $ 500 |
Fixed-to-Fixed Subordinated Note Due June 2054 | Enbridge Inc. |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate (in percent) |  |  |  | 7.20% |
Principal Amount |  |  |  | $ 700 |
4.21% medium-term notes due February 2030 | Enbridge Inc. |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate (in percent) |  | 4.21% |  |  |
Principal Amount |  | $ 600 |  |  |
4.73% medium-term notes due August 2034 | Enbridge Inc. |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate (in percent) |  | 4.73% |  |  |
Principal Amount |  | $ 800 |  |  |
5.32% medium-term notes due August 2054 | Enbridge Inc. |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate (in percent) |  | 5.32% |  |  |
Principal Amount |  | $ 400 |  |  |
5.95% senior notes due July 2034 | Algonquin Gas Transmission, LLC |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate (in percent) |  |  | 5.95% |  |
Principal Amount |  |  | $ 350 |  |

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