DECOMMISSIONING LIABILITIES - Schedule of Decommissioning Provision (Detail) $ in Millions |
9 Months Ended |
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Sep. 30, 2026
CAD ($)
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| Provision for decommissioning, restoration and rehabilitation costs [abstract] | |
| Beginning balance | $ 4,872 |
| Liabilities Incurred | 20 |
| Liabilities Settled | (155) |
| Unwinding of Discount on Decommissioning Liabilities (Note 6) | 192 |
| Liabilities Divested | (38) |
| Exchange Rate Movements | 24 |
| Ending balance | $ 4,915 |
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- Definition The increase (decrease) in other provisions resulting from foreign currency exchange rate changes on provisions measured in a currency different from the entity's presentation currency. [Refer: Other provisions] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The increase in other provisions through adjustments arising from the passage of time. [Refer: Other provisions] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The increase (decrease) in other provisions resulting from transfers and changes that the entity does not separately disclose in the same statement or note. [Refer: Other provisions] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The amount recognised for new other provisions. [Refer: Other provisions] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The amount of provision for costs related to decommissioning, restoration and rehabilitation. [Refer: Other provisions] Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- References No definition available.
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- Definition The amount used (ie incurred and charged against the provision) for other provisions. [Refer: Other provisions] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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