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Subsequent Events (Details) shares in Millions, share in Millions, $ in Millions | Oct. 26, 2025 CAD ($) share | Aug. 21, 2025 CAD ($) | Oct. 15, 2025 CAD ($) shares
--- | --- | --- | ---
Other disposals of assets | Discontinued operations |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |
Proceeds from disposal of oil and gas assets | $ 150 |  |
Cash and cash equivalents in subsidiary or businesses acquired or disposed | 75 |  |
Assets other than cash or cash equivalents in subsidiary or businesses acquired or disposed | 75 |  |
Term Loan Facility |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |
Borrowing facility term (in years) |  | 3 years |
MEG Energy Corp | Entering into significant commitments or contingent liabilities |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |
Number of instruments acquired (in shares) | shares |  |  | 25.0
Number of instruments acquired, value |  |  | $ 752
Cash | $ 3,800 |  |
Number of instruments or interests issued or issuable | share | 159.6 |  |
MEG Energy Corp | Term Loan Facility |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |
Credit facilities, maximum borrowing capacity |  | $ 2,700 |
MEG Energy Corp | Bridge Facility |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |
Credit facilities, maximum borrowing capacity |  | $ 2,500 |

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