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DEBT - Long Term Debt Repayments (Details) € in Millions, $ in Millions, $ in Millions | 1 Months Ended | 7 Months Ended | 9 Months Ended
--- | --- | --- | ---
Sep. 30, 2024 CAD ($) | Aug. 31, 2024 CAD ($) | Jul. 31, 2024 USD ($) | Jun. 30, 2024 USD ($) | Apr. 30, 2024 EUR (€) | Mar. 31, 2024 USD ($) | Feb. 29, 2024 USD ($) | Feb. 29, 2024 CAD ($) | Jul. 31, 2024 CAD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2024 CAD ($) | Sep. 30, 2024 EUR (€)
Long-Term Debt |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Long Term and Short Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Principal Amount |  |  |  |  | € 23 |  |  |  |  | $ 3,600 | $ 800 | € 23
3.15% medium-term notes | Enbridge Gas Inc. |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Long Term and Short Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (in percent) |  | 3.15% |  |  |  |  |  |  |  |  |  |
Principal Amount |  | $ 215 |  |  |  |  |  |  |  |  |  |
3.98% senior Notes | Enbridge Pipelines (Southern Lights) L.L.C. |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Long Term and Short Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (in percent) |  |  |  | 3.98% |  |  |  |  |  |  |  |
Principal Amount |  |  |  | $ 42 |  |  |  |  |  |  |  |
8.20% Debentures | Enbridge Pipelines Inc. |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Long Term and Short Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (in percent) |  |  |  |  |  |  | 8.20% | 8.20% |  |  |  |
Principal Amount |  |  |  |  |  |  |  | $ 200 |  |  |  |
4.01% Senior Notes | Enbridge Southern Lights LP |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Long Term and Short Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (in percent) |  |  | 4.01% |  |  |  |  |  | 4.01% |  |  |
Principal Amount |  |  |  |  |  |  |  |  | $ 20 |  |  |
3.43% medium-term notes | Westcoast Energy Inc. |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Long Term and Short Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (in percent) | 3.43% |  |  |  |  |  |  |  |  | 3.43% | 3.43% | 3.43%
Principal Amount | $ 350 |  |  |  |  |  |  |  |  |  |  |
4.75% Senior Notes | Spectra Energy Partners, LP |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Long Term and Short Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (in percent) |  |  |  |  |  | 4.75% |  |  |  |  |  |
Principal Amount |  |  |  |  |  | $ 1,000 |  |  |  |  |  |
2.10% Senior Notes | Blauracke GmbH |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Long Term and Short Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (in percent) |  |  |  |  | 2.10% |  |  |  |  |  |  |
Principal Amount | € |  |  |  |  | € 23 |  |  |  |  |  |  |
3.51% Senior Notes | Algonquin Gas Transmission, LLC |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Long Term and Short Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (in percent) |  |  | 3.51% |  |  |  |  |  | 3.51% |  |  |
Principal Amount |  |  | $ 350 |  |  |  |  |  |  |  |  |
Enbridge Inc. | Floating rate notes |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Long Term and Short Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Principal Amount |  |  |  |  |  |  | $ 600 |  |  |  |  |
Spread on variable rate (in percent) |  |  |  |  |  |  |  |  |  | 0.63% | 0.63% | 0.63%
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] |  |  |  |  |  |  |  |  |  | Secured Overnight Financing Rate (SOFR) [Member] | Secured Overnight Financing Rate (SOFR) [Member] | Secured Overnight Financing Rate (SOFR) [Member]
Enbridge Inc. | 2.15% Senior Notes |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Long Term and Short Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (in percent) |  |  |  |  |  |  | 2.15% | 2.15% |  |  |  |
Principal Amount |  |  |  |  |  |  | $ 400 |  |  |  |  |
Enbridge Inc. | 5.97% Senior Notes |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Long Term and Short Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (in percent) |  |  |  |  |  | 5.97% |  |  |  |  |  |
Principal Amount |  |  |  |  |  | $ 700 |  |  |  |  |  |
Period after issuance after which the instruments are callable (in years) |  |  |  |  |  | 1 year |  |  |  |  |  |
Enbridge Inc. | 3.50% Senoir Notes |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Long Term and Short Term Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (in percent) |  |  |  | 3.50% |  |  |  |  |  |  |  |
Principal Amount |  |  |  | $ 500 |  |  |  |  |  |  |  |

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