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Supplemental Cash Flow Information - Reconciliation of movements of liabilities to cash flows (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Short-Term Debt |  |
Reconciliation of movements of liabilities to cash flows arising from financing activities |  |
Liabilities arising from financing activities at beginning of period | $ 2,807 | $ 1,284
Changes from financing cash flows: |  |
Net issuance of commercial paper | (2,343) | 1,473
Realized foreign exchange (gains) and losses | 38 | (19)
Non-cash changes: |  |
Unrealized foreign exchange losses and (gains) | (8) | 69
Liabilities arising from financing activities at end of period | 494 | 2,807
Current Portion of Long-Term Lease Liabilities |  |
Reconciliation of movements of liabilities to cash flows arising from financing activities |  |
Liabilities arising from financing activities at beginning of period | 317 | 310
Changes from financing cash flows: |  |
Realized foreign exchange (gains) and losses |  | 15
Lease liability payments | (331) | (329)
Non-cash changes: |  |
Unrealized foreign exchange losses and (gains) | (3) |
Reclassification of lease obligations | 365 | 321
Liabilities arising from financing activities at end of period | 348 | 317
Long-Term Lease Liabilities |  |
Reconciliation of movements of liabilities to cash flows arising from financing activities |  |
Liabilities arising from financing activities at beginning of period | 2,695 | 2,540
Non-cash changes: |  |
Unrealized foreign exchange losses and (gains) | (14) | (25)
Lease derecognition | (682) | (22)
Reclassification of lease obligations | (365) | (321)
New lease liabilities | 1,844 | 523
Liabilities arising from financing activities at end of period | 3,478 | 2,695
Current Portion of Long-Term Debt |  |
Reconciliation of movements of liabilities to cash flows arising from financing activities |  |
Liabilities arising from financing activities at beginning of period | 0 | 231
Changes from financing cash flows: |  |
Repayment of long-term debt |  | (233)
Realized foreign exchange (gains) and losses |  | 2
Non-cash changes: |  |
Liabilities arising from financing activities at end of period | 0 | 0
Long-Term Debt |  |
Reconciliation of movements of liabilities to cash flows arising from financing activities |  |
Liabilities arising from financing activities at beginning of period | 9,800 | 13,989
Changes from financing cash flows: |  |
Net issuance of commercial paper | 1,500 |
Debt issuance costs | (8) |
Repayment of long-term debt | (5) | (4,895)
Loss on extinguishment of long-term debt |  | 32
Realized foreign exchange (gains) and losses | 5 | (91)
Other | (3) | (13)
Non-cash changes: |  |
Unrealized foreign exchange losses and (gains) | (202) | 778
Liabilities arising from financing activities at end of period | 11,087 | 9,800
Partnership Liability |  |
Reconciliation of movements of liabilities to cash flows arising from financing activities |  |
Liabilities arising from financing activities at beginning of period | 413 | 427
Changes from financing cash flows: |  |
Distributions to non-controlling interest | (16) | (14)
Other | 1 |
Non-cash changes: |  |
Liabilities arising from financing activities at end of period | 398 | 413
Dividends Payable |  |
Reconciliation of movements of liabilities to cash flows arising from financing activities |  |
Liabilities arising from financing activities at beginning of period | 0 | 0
Changes from financing cash flows: |  |
Dividends paid on common shares | (2,749) | (2,596)
Non-cash changes: |  |
Dividends declared on common shares | 2,749 | 2,596
Liabilities arising from financing activities at end of period | $ 0 | $ 0

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