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DEBT - Long Term Debt Issuance (Details) | Sep. 30, 2020 USD ($) | Sep. 30, 2020 CAD ($) | Jul. 31, 2020 USD ($) | May 31, 2020 CAD ($) | Apr. 30, 2020 CAD ($) | Feb. 29, 2020 USD ($)
--- | --- | --- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |  |  |
Principal Amount | $ 1,800,000,000 | $ 2,500,000,000 |  |  |  |
Enbridge Inc. | Floating rate notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Principal Amount |  |  |  |  |  | $ 750,000,000
Enbridge Inc. | 3.20% medium-term notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Principal Amount |  |  |  | $ 750,000,000 |  |
Interest rate (as a percent) |  |  |  | 3.20% |  |
Enbridge Inc. | 2.44% medium-term notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Principal Amount |  |  |  | $ 550,000,000 |  |
Interest rate (as a percent) |  |  |  | 2.44% |  |
Enbridge Inc. | Fixed-to-fixed subordinated term notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Principal Amount |  |  | $ 1,000,000,000 |  |  |
Enbridge Gas Inc. | 2.90% medium-term notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Principal Amount |  |  |  |  | $ 600,000,000 |
Interest rate (as a percent) |  |  |  |  | 2.90% |
Enbridge Gas Inc. | 3.65% medium-term notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Principal Amount |  |  |  |  | $ 600,000,000 |
Interest rate (as a percent) |  |  |  |  | 3.65% |

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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