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Financial assets and liabilities - Interest Rate Exposures (Details) $ in Millions | Jun. 30, 2026 CAD ($)
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Interest rate risk |
Disclosure of detailed information about hedging instruments [line items] |
Percentage of possible change in risk variable | 1.00%
Interest rate risk | Top of range |
Disclosure of detailed information about hedging instruments [line items] |
Reasonably possible change in risk variable, gain (loss) on net earnings | $ (24)
Reasonably possible change in 10% depreciation (appreciation) of the CAD dollar gain (loss) on other comprehensive income (loss) | 87
Interest rate risk | Bottom of range |
Disclosure of detailed information about hedging instruments [line items] |
Reasonably possible change in risk variable, gain (loss) on net earnings | 12
Reasonably possible change in 10% depreciation (appreciation) of the CAD dollar gain (loss) on other comprehensive income (loss) | (83)
Interest rate swap |
Disclosure of detailed information about hedging instruments [line items] |
Hedging instrument, liabilities | 1
Interest rate swap | Interest rate risk |
Disclosure of detailed information about hedging instruments [line items] |
Hedging instrument, liabilities | 8
M-45 MTN debentures | Interest rate swap | Interest rate risk |
Disclosure of detailed information about hedging instruments [line items] |
Notional amount, financial instrument terminated | 200
Initial net financial liabilities, at fair value | 3
EO Notes | Interest rate swap | Interest rate risk |
Disclosure of detailed information about hedging instruments [line items] |
Initial net financial liabilities, at fair value | $ 5

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