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Cash Flow Information - Schedule of Roll Forward (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Beginning balance | $ 1,857.2 | $ 1,914.0
Net proceeds (repayments) | (282.6) | (236.6)
Transaction costs | (1.2) |
Non-cash changes |  |
Foreign exchange | (4.1) | 29.4
Additions and modifications | 136.9 | 148.6
Other | 1.9 | 1.8
Ending balance | 1,708.1 | 1,857.2
Software financing obligations |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Beginning balance | 34.6 | 31.0
Net proceeds (repayments) | (24.6) | (17.2)
Transaction costs | 0.0 |
Non-cash changes |  |
Foreign exchange | (0.2) | 1.1
Additions and modifications | 0.6 | 19.3
Other | 0.5 | 0.4
Ending balance | 10.9 | 34.6
Lease liabilities |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Beginning balance | 621.4 | 668.9
Net proceeds (repayments) | (125.0) | (153.7)
Transaction costs | 0.0 |
Non-cash changes |  |
Foreign exchange | (6.0) | 15.9
Additions and modifications | 85.7 | 89.9
Other | 3.0 | 0.4
Ending balance | 579.1 | 621.4
Senior unsecured notes |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Beginning balance | 298.6 | 298.2
Net proceeds (repayments) | 250.0 | 0.0
Transaction costs | (1.2) |
Non-cash changes |  |
Foreign exchange | 0.0 | 0.0
Additions and modifications | 0.0 | 0.0
Other | 0.2 | 0.4
Ending balance | 547.6 | 298.6
Revolving credit facility |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Beginning balance | 840.2 | 851.2
Net proceeds (repayments) | (355.2) | (22.6)
Transaction costs | 0.0 |
Non-cash changes |  |
Foreign exchange | 1.7 | 12.1
Additions and modifications | 0.0 | (1.2)
Other | 1.0 | 0.7
Ending balance | 487.7 | 840.2
Notes payable |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Beginning balance | 62.4 | 64.7
Net proceeds (repayments) | (27.8) | (43.1)
Transaction costs | 0.0 |
Non-cash changes |  |
Foreign exchange | 0.4 | 0.3
Additions and modifications | 50.6 | 40.6
Other | (2.8) | (0.1)
Ending balance | $ 82.8 | $ 62.4

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