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Other Income (Loss), Net (Details) - CAD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of attribution of expenses by nature to their function [line items] |  |  |
Other income | $ 63 | $ 532 |
Decommissioning Liabilities | $ 4,155 | 3,559 | $ 3,906
Site Rehabilitation Program |  |  |
Disclosure of attribution of expenses by nature to their function [line items] |  |  |
Decommissioning Liabilities |  | 65 |
2018 Atlantic Region Incident |  |  |
Disclosure of attribution of expenses by nature to their function [line items] |  |  |
Insurance proceeds |  | $ 328 |

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