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DEBT - Schedule of Interest Expense (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
DEBT |  |  |
Capitalized interest | $ (215) | $ (192) | $ (326)
Total interest expense | 2,655 | 2,790 | 2,663
Spectra Energy Capital, LLC |  |  |
DEBT |  |  |
Amortization of fair value adjustment | (50) | (54) | (67)
Debentures and term notes |  |  |
DEBT |  |  |
Interest expense on debt | 2,850 | 2,913 | 2,783
Commercial paper and credit facility draws |  |  |
DEBT |  |  |
Interest expense on debt | $ 70 | $ 123 | $ 273

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