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DEBT - Schedule of Long-term Debt Issuances (Details) - 12 months ended Dec. 31, 2021 $ in Millions, $ in Millions | CAD ($) | USD ($)
--- | --- | ---
Debt Instrument [Line Items] |  |
Principal amount | $ 3,200 | $ 3,900
Enbridge Gas Inc. | 2.35% medium-term notes due September 2031 |  |
Debt Instrument [Line Items] |  |
Principal amount | 475 |
Enbridge Gas Inc. | 3.20% medium-term notes due September 2051 |  |
Debt Instrument [Line Items] |  |
Principal amount | 425 |
Enbridge Pipelines Inc. | 2.82% medium-term notes due May 2031 |  |
Debt Instrument [Line Items] |  |
Principal amount | 400 |
Enbridge Pipelines Inc. | 4.20% medium-term notes due May 2051 |  |
Debt Instrument [Line Items] |  |
Principal amount | 400 |
Spectra Energy Partners, LP | 2.50% senior notes due September 2031 |  |
Debt Instrument [Line Items] |  |
Principal amount |  | 400
Enbridge Inc. | Floating rate senior-notes due February 20231 |  |
Debt Instrument [Line Items] |  |
Principal amount |  | 500
Enbridge Inc. | 2.50% Sustainability-linked senior notes due August 2033 |  |
Debt Instrument [Line Items] |  |
Principal amount |  | 1,000
Enbridge Inc. | 3.40% senior notes due August 2051 |  |
Debt Instrument [Line Items] |  |
Principal amount |  | 500
Enbridge Inc. | 3.10% Sustainability-linked medium-term notes due September 2033 |  |
Debt Instrument [Line Items] |  |
Principal amount | 1,100 |
Enbridge Inc. | 4.10% medium-term notes due September 2051 |  |
Debt Instrument [Line Items] |  |
Principal amount | $ 400 |
Enbridge Inc. | 0.55% senior notes due October 2023 |  |
Debt Instrument [Line Items] |  |
Principal amount |  | 500
Enbridge Inc. | 1.60% senior notes due October 2026 |  |
Debt Instrument [Line Items] |  |
Principal amount |  | 500
Enbridge Inc. | 3.40% senior notes due August 2051 |  |
Debt Instrument [Line Items] |  |
Principal amount |  | $ 500
Enbridge Inc. | SOFR | Floating rate senior-notes due February 20231 |  |
Debt Instrument [Line Items] |  |
Basis spread on variable rate (as a percent) | 0.40% |

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