v3.25.4
Interests in Structured Entities - Securitized Holdings by the Type and Asset Quality (Detail) - CAD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Disclosure of unconsolidated structured entities [Line Items]    
Securitized holdings $ 2,373 $ 1,972
AAA    
Disclosure of unconsolidated structured entities [Line Items]    
Securitized holdings 1,608 1,181
AA    
Disclosure of unconsolidated structured entities [Line Items]    
Securitized holdings 433 319
A    
Disclosure of unconsolidated structured entities [Line Items]    
Securitized holdings 154 378
BBB    
Disclosure of unconsolidated structured entities [Line Items]    
Securitized holdings 50 41
BB and below    
Disclosure of unconsolidated structured entities [Line Items]    
Securitized holdings 128 $ 53
CMBS    
Disclosure of unconsolidated structured entities [Line Items]    
Securitized holdings 787  
CMBS | AAA    
Disclosure of unconsolidated structured entities [Line Items]    
Securitized holdings 787  
CMBS | AA    
Disclosure of unconsolidated structured entities [Line Items]    
Securitized holdings 0  
CMBS | A    
Disclosure of unconsolidated structured entities [Line Items]    
Securitized holdings 0  
CMBS | BBB    
Disclosure of unconsolidated structured entities [Line Items]    
Securitized holdings 0  
CMBS | BB and below    
Disclosure of unconsolidated structured entities [Line Items]    
Securitized holdings 0  
RMBS    
Disclosure of unconsolidated structured entities [Line Items]    
Securitized holdings 1  
RMBS | AAA    
Disclosure of unconsolidated structured entities [Line Items]    
Securitized holdings 1  
RMBS | AA    
Disclosure of unconsolidated structured entities [Line Items]    
Securitized holdings 0  
RMBS | A    
Disclosure of unconsolidated structured entities [Line Items]    
Securitized holdings 0  
RMBS | BBB    
Disclosure of unconsolidated structured entities [Line Items]    
Securitized holdings 0  
RMBS | BB and below    
Disclosure of unconsolidated structured entities [Line Items]    
Securitized holdings 0  
ABS    
Disclosure of unconsolidated structured entities [Line Items]    
Securitized holdings 1,585  
ABS | AAA    
Disclosure of unconsolidated structured entities [Line Items]    
Securitized holdings 820  
ABS | AA    
Disclosure of unconsolidated structured entities [Line Items]    
Securitized holdings 433  
ABS | A    
Disclosure of unconsolidated structured entities [Line Items]    
Securitized holdings 154  
ABS | BBB    
Disclosure of unconsolidated structured entities [Line Items]    
Securitized holdings 50  
ABS | BB and below    
Disclosure of unconsolidated structured entities [Line Items]    
Securitized holdings $ 128