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Invested Assets and Investment Income - Investment Expenses (Details) - CAD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Disclosure of financial assets [line items]    
Investment expenses $ 1,348 $ 1,297
Related to invested assets    
Disclosure of financial assets [line items]    
Investment expenses 731 720
Related to segregated, mutual and other funds    
Disclosure of financial assets [line items]    
Investment expenses $ 617 $ 577