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Provisions and Other Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2022
Other Provisions, Contingent Liabilities And Contingent Assets [Abstract] |
Summary of Provisions and Other Liabilities |
(CAD$ in millions) |  | December 31, 2022 |  | December 31, 2021 |  |
Decommissioning and restoration provisions and other provisions (a) |  | $ | 2,805 |  |  | $ | 3,813 |  |  |
Obligation to Neptune Bulk Terminals (b) |  | 189 |  |  | 170 |  |  |
Derivative liabilities (net of current portion of $10 (2021 – $9)) |  | 26 |  |  | 51 |  |  |
ENAMI preferential dividend liability (Note 11(a)) |  | 286 |  |  | 78 |  |  |
QB2 variable consideration to IMSA (Note 11(a)) |  | 114 |  |  | 98 |  |  |
Other IMSA payable (net of current portion of $68 (2021 – $nil)) |  | — |  |  | 61 |  |  |
Other liabilities |  | 97 |  |  | 83 |  |  |
|  | $ | 3,517 |  |  | $ | 4,354 |  |  |
a) Decommissioning and Restoration Provisions and Other Provisions
Summary of Movements in Provisions | The following table summarizes the movements in provisions for the year ended December 31, 2022:
(CAD$ in millions) |  | Decommissioning and Restoration Provisions |  | Other Provisions |  | Total
As at January 1, 2022 |  | $ | 3,725 |  |  | $ | 298 |  |  | $ | 4,023 |
Settled during the year |  | (131) |  |  | (34) |  |  | (165) |
Change in discount rate |  | (1,493) |  |  | — |  |  | (1,493) |
Change in amount and timing of cash flows |  | 688 |  |  | 63 |  |  | 751 |
Accretion |  | 143 |  |  | 6 |  |  | 149 |
Transfer to liabilities associated with assets held for sale |  | (153) |  |  | — |  |  | (153) |
Changes in foreign exchange rates |  | 41 |  |  | 13 |  |  | 54 |
As at December 31, 2022 |  | 2,820 |  |  | 346 |  |  | 3,166 |
Less current portion of provisions (Note 18) |  | (258) |  |  | (103) |  |  | (361) |
Non-current provisions |  | $ | 2,562 |  |  | $ | 243 |  |  | $ | 2,805 |

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