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DEBT - Long Term Debt Repayments (Details) $ in Millions, $ in Millions	1 Months Ended			3 Months Ended
	Mar. 31, 2021 USD ($)	Mar. 31, 2021 CAD ($)	Feb. 28, 2021 CAD ($)	Mar. 31, 2021 USD ($)	Mar. 31, 2021 CAD ($)
DEBT
Principal Amount				$ 250	$ 600
Spectra Energy Partners, LP | 4.60% senior notes
DEBT
Principal Amount	$ 250
Interest rate (as a percent)			4.60%
Enbridge Inc. | 4.26% medium-term notes
DEBT
Principal Amount			$ 200
Interest rate (as a percent)			4.26%
Enbridge Inc. | 3.16% medium-term notes
DEBT
Principal Amount		$ 400
Interest rate (as a percent)			3.16%

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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

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- Definition

Gross amount of debt extinguished.

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