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Net Interest Expense and Other Net Finance Expense - Schedule of Interest Expense (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Analysis of income and expense [abstract] |  |
Interest on borrowings | $ 20.1 | $ 37.6
Interest on lease liabilities | 28.8 | 32.3
Other | 4.2 | 3.4
Total interest expense | 53.1 | 73.3
Interest income on FVOCI investment debt securities | (2.8) | (2.5)
Other | (1.1) | (1.2)
Total interest income | (3.9) | (3.7)
Net interest expense | $ 49.2 | $ 69.6

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