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Financial Instruments - Timing of Undiscounted Cash Outflows Relating to Financial Liabilities (Details) - CAD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |
Bank indebtedness | $ 4.7 | $ 19.5
Trade and other payables | 576.0 | 576.4
Lease liabilities | 740.3 | 810.5
Long-term debt | 683.2 | 863.0
Other financial liabilities | 8.2 | 4.8
Total contractual obligations | 2,012.4 | 2,274.2
Less than 1 Year |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |
Bank indebtedness | 4.7 | 19.5
Trade and other payables | 576.0 | 576.4
Lease liabilities | 127.8 | 138.5
Long-term debt | 47.6 | 47.2
Other financial liabilities | 0.9 | 0.9
Total contractual obligations | 757.0 | 782.5
1 to 3 Years |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |
Bank indebtedness | 0.0 | 0.0
Trade and other payables | 0.0 | 0.0
Lease liabilities | 226.9 | 255.0
Long-term debt | 334.7 | 366.9
Other financial liabilities | 7.2 | 1.8
Total contractual obligations | 568.8 | 623.7
After 3 Years |  |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |  |
Bank indebtedness | 0.0 | 0.0
Trade and other payables | 0.0 | 0.0
Lease liabilities | 385.6 | 417.0
Long-term debt | 300.9 | 448.9
Other financial liabilities | 0.1 | 2.1
Total contractual obligations | $ 686.6 | $ 868.0

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- Definition The amount of contractual undiscounted cash flows in relation to lease liabilities before deducting finance charges. [Refer: Lease liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2020-01-01 -Paragraph 58 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&anchor=para_58&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2020-01-01 -Paragraph B11D -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_B11D_a&doctype=Appendix&subtype=B -URIDate 2020-01-01 + Details
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- Definition The amount of contractual undiscounted cash flows in relation to non-derivative financial liabilities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2020-01-01 -Paragraph 39 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_39_a&doctype=Standard -URIDate 2020-01-01 + Details
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