v3.25.4
Derivative and Hedging Instruments - Cash Flow Hedges (Details) - Cash flow hedges - CAD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of detailed information about hedging instruments [line items]    
Change in value of the hedged item for ineffectiveness measurement $ (63) $ (193)
Change in value of the hedging instrument for ineffectiveness measurement 63 193
Gains (losses) deferred in AOCI on derivatives 63 193
Gains (losses) reclassified from AOCI into Total investment result 127 34
Ineffectiveness recognized in Total investment result 0 0
Interest rate risk | Forecasted liability issuance | Treasury locks    
Disclosure of detailed information about hedging instruments [line items]    
Change in value of the hedged item for ineffectiveness measurement 0 3
Change in value of the hedging instrument for ineffectiveness measurement 0 (3)
Gains (losses) deferred in AOCI on derivatives 0 (3)
Gains (losses) reclassified from AOCI into Total investment result 0 0
Ineffectiveness recognized in Total investment result 0 0
Foreign exchange risk | Fixed Rate Liabilities [Member] | Foreign currency swaps    
Disclosure of detailed information about hedging instruments [line items]    
Change in value of the hedged item for ineffectiveness measurement 0 (23)
Change in value of the hedging instrument for ineffectiveness measurement 0 23
Gains (losses) deferred in AOCI on derivatives 0 23
Gains (losses) reclassified from AOCI into Total investment result 0 26
Ineffectiveness recognized in Total investment result 0 0
Interest and foreign exchange risk | Floating rate liabilities | Foreign currency swaps    
Disclosure of detailed information about hedging instruments [line items]    
Change in value of the hedged item for ineffectiveness measurement (8) 32
Change in value of the hedging instrument for ineffectiveness measurement 8 (32)
Gains (losses) deferred in AOCI on derivatives 8 (32)
Gains (losses) reclassified from AOCI into Total investment result 17 (75)
Ineffectiveness recognized in Total investment result 0 0
Equity risk | Stock-based compensation | Equity contracts    
Disclosure of detailed information about hedging instruments [line items]    
Change in value of the hedged item for ineffectiveness measurement (50) (145)
Change in value of the hedging instrument for ineffectiveness measurement 50 145
Gains (losses) deferred in AOCI on derivatives 50 145
Gains (losses) reclassified from AOCI into Total investment result 87 66
Ineffectiveness recognized in Total investment result 0 0
CPI risk | Inflation linked insurance liabilities | Interest rate swaps    
Disclosure of detailed information about hedging instruments [line items]    
Change in value of the hedged item for ineffectiveness measurement (5) (60)
Change in value of the hedging instrument for ineffectiveness measurement 5 60
Gains (losses) deferred in AOCI on derivatives 5 60
Gains (losses) reclassified from AOCI into Total investment result 23 17
Ineffectiveness recognized in Total investment result $ 0 $ 0