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Other Long-Term Liabilities - Narrative (Details) - CAD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of other provisions [line items] |  |  |  |
Asset retirement obligations settlement period | 60 years |  |  |
Inflation rate | 2.00% | 2.00% | 2.00% |
Share-based compensation | $ 620 | $ 780 | $ 832 | $ 489
Stock options |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Intrinsic value of vested stock options | 181 | 164 | 208 |
Certain Executives | Performance Share Units |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Share-based compensation | $ 99 | $ 96 | $ 127 |
Provision for decommissioning, restoration and rehabilitation costs |  |  |  |
Disclosure of other provisions [line items] |  |  |  |
Weighted average discount rate | 4.80% | 5.20% | 5.60% |

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- Definition Decommissioning, Restoration, And Rehabilitation Liabilities, Period Of Accretion + References No definition available. + Details
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- Definition The intrinsic value of liabilities arising from share-based transactions for which the counterparty's right to cash or other assets had vested by the end of the period (for example, vested share appreciation rights). The intrinsic value is the difference between the fair value of the shares to which the counterparty has the (conditional or unconditional) right to subscribe, or which it has the right to receive, and the price (if any) that the counterparty is (or will be) required to pay for those shares. Share-based payment transactions are transactions in which the entity: (a) receives goods or services from the supplier of those goods or services (including an employee) in a share-based payment arrangement; or (b) incurs an obligation to settle the transaction with the supplier in a share-based payment arrangement when another group entity receives those goods or services, for which the counterparty's right to cash or other assets had vested by the end of the period (for example, vested share appreciation rights). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2024-01-01 -Paragraph 51 -Subparagraph b -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2024-en-r&anchor=para_51_b_ii&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of liabilities arising from share-based payment transactions. Share-based payment transactions are transactions in which the entity: (a) receives goods or services from the supplier of those goods or services (including an employee) in a share-based payment arrangement; or (b) incurs an obligation to settle the transaction with the supplier in a share-based payment arrangement when another group entity receives those goods or services. [Refer: Types of share-based payment arrangements [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2024-01-01 -Paragraph 51 -Subparagraph b -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2024-en-r&anchor=para_51_b_i&doctype=Standard -URIDate 2024-03-27 + Details
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