v3.26.1
Securities - Schedule of Unrealized Gains and Losses (Details) - CAD ($)
$ in Millions
Jul. 31, 2026
Oct. 31, 2025
Disclosure of financial assets [line items]    
Fair value through other comprehensive income $ 137,070 $ 113,209
Cost or amortized cost    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 137,778 112,197
Gross unrealized gains    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 343 1,369
Gross unrealized losses    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income (1,051) (357)
Fair value    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 137,070 113,209
Canadian federal government | Cost or amortized cost    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 59,191 44,894
Canadian federal government | Gross unrealized gains    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 123 443
Canadian federal government | Gross unrealized losses    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income (121) (2)
Canadian federal government | Fair value    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 59,193 45,335
Canadian provincial and municipal governments | Cost or amortized cost    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 7,615 5,525
Canadian provincial and municipal governments | Gross unrealized gains    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 50 132
Canadian provincial and municipal governments | Gross unrealized losses    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income (53) (13)
Canadian provincial and municipal governments | Fair value    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 7,612 5,644
U.S. federal government | Cost or amortized cost    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 27,407 20,515
U.S. federal government | Gross unrealized gains    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 28 327
U.S. federal government | Gross unrealized losses    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income (378) (33)
U.S. federal government | Fair value    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 27,057 20,809
U.S. states, municipalities and agencies | Cost or amortized cost    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 5,009 5,622
U.S. states, municipalities and agencies | Gross unrealized gains    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 21 77
U.S. states, municipalities and agencies | Gross unrealized losses    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income (91) (65)
U.S. states, municipalities and agencies | Fair value    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 4,939 5,634
Other governments | Cost or amortized cost    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 4,317 4,039
Other governments | Gross unrealized gains    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 8 35
Other governments | Gross unrealized losses    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income (31) (9)
Other governments | Fair value    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 4,294 4,065
NHA MBS, U.S. agency MBS and CMO | Cost or amortized cost    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 29,325 26,946
NHA MBS, U.S. agency MBS and CMO | Gross unrealized gains    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 75 291
NHA MBS, U.S. agency MBS and CMO | Gross unrealized losses    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income (357) (222)
NHA MBS, U.S. agency MBS and CMO | Fair value    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 29,043 27,015
Corporate debt | Cost or amortized cost    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 4,747 4,491
Corporate debt | Gross unrealized gains    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 12 37
Corporate debt | Gross unrealized losses    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income (20) (13)
Corporate debt | Fair value    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 4,739 4,515
Corporate equity | Cost or amortized cost    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 167 165
Corporate equity | Gross unrealized gains    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 26 27
Corporate equity | Gross unrealized losses    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income 0 0
Corporate equity | Fair value    
Disclosure of financial assets [line items]    
Fair value through other comprehensive income $ 193 $ 192