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DEBT - Long Term Debt Repayments (Details) $ in Millions, $ in Millions | 1 Months Ended
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Jun. 30, 2020 CAD ($) | Jun. 30, 2020 USD ($) | Apr. 30, 2020 CAD ($) | Mar. 31, 2020 CAD ($) | Jan. 31, 2020 CAD ($) | Jan. 31, 2020 USD ($)
Enbridge Pipelines (Southern Lights) L.L.C. | 3.98% senior notes due 2040 |  |  |  |  |  |
DEBT |  |  |  |  |  |
Principal Amount |  | $ 26 |  |  |  |
Interest rate (as a percent) | 3.98% | 3.98% |  |  |  |
Enbridge Pipelines Inc. | 4.45% medium-term notes |  |  |  |  |  |
DEBT |  |  |  |  |  |
Principal Amount |  |  | $ 350 |  |  |
Interest rate (as a percent) |  |  | 4.45% |  |  |
Enbridge Southern Lights LP | 4.01% senior notes due 2040 |  |  |  |  |  |
DEBT |  |  |  |  |  |
Principal Amount | $ 7 |  |  |  |  |
Interest rate (as a percent) | 4.01% | 4.01% |  |  |  |
Spectra Energy Partners, LP | 6.09% senior secured notes |  |  |  |  |  |
DEBT |  |  |  |  |  |
Principal Amount |  |  |  |  |  | $ 111
Interest rate (as a percent) |  |  |  |  | 6.09% | 6.09%
Spectra Energy Partners, LP | Floating rate notes |  |  |  |  |  |
DEBT |  |  |  |  |  |
Principal Amount |  | $ 400 |  |  |  |
Westcoast Energy Inc. | 9.90% debentures |  |  |  |  |  |
DEBT |  |  |  |  |  |
Principal Amount |  |  |  |  | $ 100 |
Interest rate (as a percent) |  |  |  |  | 9.90% | 9.90%
Enbridge Inc. | Floating rate notes |  |  |  |  |  |
DEBT |  |  |  |  |  |
Principal Amount |  |  |  |  |  | $ 700
Enbridge Inc. | 4.53% medium-term notes |  |  |  |  |  |
DEBT |  |  |  |  |  |
Principal Amount |  |  |  | $ 500 |  |
Interest rate (as a percent) |  |  |  | 4.53% |  |
Enbridge Inc. | Floating rate notes |  |  |  |  |  |
DEBT |  |  |  |  |  |
Principal Amount |  | $ 500 |  |  |  |

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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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