DEBT - Schedule of Interest Expense (Details) - CAD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
DEBT
Capitalized interest	$ (161)	$ (101)	$ (74)
Total interest expense	4,419	3,812	3,179
Spectra Energy Capital, LLC
DEBT
Amortization of fair value adjustment	18	(45)	(45)
Debentures and term notes
DEBT
Interest expense on debt	4,123	3,439	2,910
Commercial paper and credit facility draws
DEBT
Interest expense on debt	$ 439	$ 519	$ 388