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Cash Flow Information - Schedule of Roll Forward (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Beginning balance | $ 1,677.3 | $ 1,801.7
Net lease payments | (124.1) | (125.0)
Net proceeds (repayments) | (50.2) | (257.9)
Transaction costs |  | (1.2)
Non-cash changes |  |
Foreign exchange | 33.4 | (4.1)
Additions and modifications | 163.2 | 72.7
Acquisitions | 192.5 | 64.2
Other | 9.5 | 1.9
Ending balance | 2,025.7 | 1,677.3
Other financing obligations |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Beginning balance | 10.9 | 34.6
Net proceeds (repayments) | (62.5) | (24.6)
Transaction costs |  | 0.0
Non-cash changes |  |
Foreign exchange | 2.6 | (0.2)
Additions and modifications | 67.1 | 0.6
Acquisitions | 36.6 | 0.0
Other | 2.3 | 0.5
Ending balance | 57.0 | 10.9
Lease liabilities |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Beginning balance | 579.1 | 621.4
Net lease payments | (124.1) | (125.0)
Transaction costs |  | 0.0
Non-cash changes |  |
Foreign exchange | 24.3 | (6.0)
Additions and modifications | 100.1 | 72.1
Acquisitions | 57.3 | 13.6
Other | 5.5 | 3.0
Ending balance | 642.2 | 579.1
Senior unsecured notes |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Beginning balance | 547.6 | 298.6
Net proceeds (repayments) | 0.0 | 250.0
Transaction costs |  | (1.2)
Non-cash changes |  |
Foreign exchange | 0.0 | 0.0
Additions and modifications | 0.0 | 0.0
Acquisitions | 0.0 | 0.0
Other | 0.5 | 0.2
Ending balance | 548.1 | 547.6
Revolving credit facility |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Beginning balance | 487.7 | 840.2
Net proceeds (repayments) | 175.0 | (355.2)
Transaction costs |  | 0.0
Non-cash changes |  |
Foreign exchange | 1.5 | 1.7
Additions and modifications | (4.0) | 0.0
Acquisitions | 0.0 | 0.0
Other | 1.4 | 1.0
Ending balance | 661.6 | 487.7
Notes payable |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |
Beginning balance | 52.0 | 6.9
Net proceeds (repayments) | (38.6) | (3.1)
Transaction costs |  | 0.0
Non-cash changes |  |
Foreign exchange | 5.0 | 0.4
Additions and modifications | 0.0 | 0.0
Acquisitions | 98.6 | 50.6
Other | (0.2) | (2.8)
Ending balance | $ 116.8 | $ 52.0

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