DEBT - Long Term Debt Repayments (Details) $ in Millions, $ in Millions	1 Months Ended
	Mar. 31, 2020 CAD ($)	Jan. 31, 2020 USD ($)	Jan. 31, 2020 CAD ($)
Spectra Energy Partners, LP | 6.09% senior secured notes
DEBT
Principal Amount		$ 111
Interest rate (as a percent)		6.09%	6.09%
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%