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Capital Management - Net Debt (Details) - CAD ($) | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Disclosure of detailed information about borrowings [line items] |  |  |
Trade and other payables | $ 281,404,000 | $ 190,692,000 |
Cash | (5,464,000) | 0 | $ 0
Trade and other receivables | (228,485,000) | (173,409,000) |
Net Debt | $ 987,446,000 | $ 1,409,717,000 |
Net Debt to Adjusted Funds Flow | 0.8 | 1.9 |
Unamortized debt issuance costs | Credit Facilities |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Borrowings | $ 2,363,000 | $ 1,343,000 |
Unamortized debt issuance costs | Long-term notes |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Borrowings | 6,999,000 | 11,393,000 |
Cost | Credit Facilities |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Borrowings | (383,031,000) | (505,171,000) |
Cost | Long-term notes |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Borrowings | $ (547,598,000) | $ (874,527,000) |

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