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v3.25.2

Financial assets and liabilities - Interest Rate Exposures (Details) $ in Millions, $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2025 CAD ($) | Jun. 30, 2024 CAD ($) | Jun. 30, 2025 CAD ($) | Jun. 30, 2024 CAD ($) | Jun. 30, 2025 USD ($)
Disclosure of detailed information about hedging instruments [line items] |  |  |  |  |
Net gains (losses) on change in fair value of derivatives | $ (43) | $ (23) | $ (42) | $ (113) |
Interest rate risk |  |  |  |  |
Disclosure of detailed information about hedging instruments [line items] |  |  |  |  |
Percentage of possible change in risk variable | 1.00% |  | 1.00% |  | 1.00%
Interest rate risk | Series M-55 Medium-term notes |  |  |  |  |
Disclosure of detailed information about hedging instruments [line items] |  |  |  |  |
Net gains (losses) on change in fair value of derivatives |  |  | $ (3) |  |
Interest rate risk | Series M-55 Medium-term notes | 2025 |  |  |  |  |
Disclosure of detailed information about hedging instruments [line items] |  |  |  |  |
Notional amount | $ 300 |  | 300 |  |
Interest rate risk | Series A Notes and Series B Notes | Maturing in 2055 |  |  |  |  |
Disclosure of detailed information about hedging instruments [line items] |  |  |  |  |
Proceeds from sales or maturity of financial instruments, classified as investing activities |  |  | 2 |  |
Interest rate risk | Top of range |  |  |  |  |
Disclosure of detailed information about hedging instruments [line items] |  |  |  |  |
Reasonably possible change in risk variable impact on net earnings | (7) |  | (7) |  |
Reasonably possible change in 10% depreciation (appreciation) of the CAD dollar impact on other comprehensive income (loss) | 51 |  | 51 |  |
Interest rate risk | Bottom of range |  |  |  |  |
Disclosure of detailed information about hedging instruments [line items] |  |  |  |  |
Reasonably possible change in risk variable impact on net earnings | (10) |  | (10) |  |
Reasonably possible change in 10% depreciation (appreciation) of the CAD dollar impact on other comprehensive income (loss) | (67) |  | (67) |  |
Interest rate swaptions | Interest rate risk | Series A Notes and Series B Notes |  |  |  |  |
Disclosure of detailed information about hedging instruments [line items] |  |  |  |  |
Hedging instrument, liabilities | 2 |  | 2 |  |
Interest rate swaptions | Interest rate risk | Series A Notes and Series B Notes | Maturing in 2030 and 2035 |  |  |  |  |
Disclosure of detailed information about hedging instruments [line items] |  |  |  |  |
Notional amount | 345 |  | 345 |  |
Interest rate swap | Interest rate risk | Series A Notes |  |  |  |  |
Disclosure of detailed information about hedging instruments [line items] |  |  |  |  |
Hedging instrument, assets | 7 |  | 7 |  |
Interest rate swap | Interest rate risk | Series A Notes | Maturing In 2030 |  |  |  |  |
Disclosure of detailed information about hedging instruments [line items] |  |  |  |  |
Notional amount | 531 |  | 531 |  | $ 372
Interest rate swap | Interest rate risk | Series B Notes Maturing in 2055 |  |  |  |  |
Disclosure of detailed information about hedging instruments [line items] |  |  |  |  |
Hedging instrument, assets | 7 |  | 7 |  |
Interest rate swap | Interest rate risk | Series B Notes Maturing in 2055 | Maturing In 2035 |  |  |  |  |
Disclosure of detailed information about hedging instruments [line items] |  |  |  |  |
Notional amount | 531 |  | 531 |  | 372
Interest rate swap | Interest rate risk | Series M-62 Medium Term Notes Debentures | Maturing In 2029 |  |  |  |  |
Disclosure of detailed information about hedging instruments [line items] |  |  |  |  |
Notional amount, financial instrument terminated | 105 |  | 105 |  |
Interest rate floors | Interest rate risk | Series M-62 Medium Term Notes Debentures | Maturing In 2029 |  |  |  |  |
Disclosure of detailed information about hedging instruments [line items] |  |  |  |  |
Notional amount, financial instrument terminated | 350 |  | 350 |  |
Forward Starting Interest Rate Swap | Interest rate risk |  |  |  |  |
Disclosure of detailed information about hedging instruments [line items] |  |  |  |  |
Hedging instrument, liabilities | 3 |  | 3 |  |
Hedging instrument, assets | 13 |  | 13 |  |
Notional amount, financial instrument terminated | $ 500 |  | $ 500 |  | 350
Forward Starting Interest Rate Swap | Interest rate risk | Maturing in 2055 |  |  |  |  |
Disclosure of detailed information about hedging instruments [line items] |  |  |  |  |
Notional amount |  |  |  |  | $ 423

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