NONCONTROLLING INTERESTS (Details) - CAD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Oct. 05, 2022
NONCONTROLLING INTERESTS
Noncontrolling interests	$ 3,029	$ 3,511
Athabasca Regional Oil Sands System | Athabasca Regional Oil Sands System
NONCONTROLLING INTERESTS
Ownership interest percentage held by noncontrolling owners			11.60%
Algonquin Gas Transmission, LLC
NONCONTROLLING INTERESTS
Noncontrolling interests	384	400
Enbridge Athabasca Midstream Investor Limited Partnership
NONCONTROLLING INTERESTS
Noncontrolling interests	1,086	1,106
Maritimes & Northeast Pipeline, L.L.C.
NONCONTROLLING INTERESTS
Noncontrolling interests	559	582
Renewable energy assets
NONCONTROLLING INTERESTS
Noncontrolling interests	885	1,302
Maritimes & Northeast Pipeline Limited Partnership
NONCONTROLLING INTERESTS
Noncontrolling interests	111	117
Other
NONCONTROLLING INTERESTS
Noncontrolling interests	$ 4	$ 4