v3.26.1
Loans, Impaired Loans, and Allowance for Credit Losses (Summary of Allowance for Credit Losses) (Details) - CAD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Jul. 31, 2026
Jul. 31, 2025
Jul. 31, 2026
Jul. 31, 2025
Financial Instruments [Abstract]        
Allowance account for credit losses of financial assets, Balance at beginning of period $ 9,454 $ 9,589 $ 9,745 $ 9,141
Provision for credit losses 917 971 2,957 3,524
Write-offs, net of recoveries (969) (833) (3,095) (2,892)
Foreign exchange disposals and other adjustments 157 (22) (48) (68)
Allowance account for credit losses of financial assets, Balance at end of period 9,559 9,705 9,559 9,705
Loans [member]        
Financial Instruments [Abstract]        
Allowance account for credit losses of financial assets, Balance at beginning of period 8,419 8,613 8,689 8,094
Allowance account for credit losses of financial assets, Balance at end of period 8,508 8,682 8,508 8,682
Allowance For Loan Losses Including Off Balance Sheet Instruments [Member]        
Financial Instruments [Abstract]        
Allowance account for credit losses of financial assets, Balance at beginning of period 9,449 9,584 9,741 9,137
Provision for credit losses 918 972 2,957 3,524
Write-offs, net of recoveries (969) (833) (3,095) (2,892)
Foreign exchange disposals and other adjustments 156 (22) (49) (68)
Allowance account for credit losses of financial assets, Balance at end of period 9,554 9,701 9,554 9,701
Allowance For Credit Losses On Debt Securities [Member]        
Financial Instruments [Abstract]        
Allowance account for credit losses of financial assets, Balance at beginning of period 5 5 4 4
Provision for credit losses (1) (1) 0 0
Write-offs, net of recoveries 0 0 0 0
Foreign exchange disposals and other adjustments 1 0 1 0
Allowance account for credit losses of financial assets, Balance at end of period 5 4 5 4
Allowance For Credit Losses On Debt Securities [Member] | Debt securities at amortized cost [member]        
Financial Instruments [Abstract]        
Allowance account for credit losses of financial assets, Balance at beginning of period 2 3 2 3
Provision for credit losses (1) (1) (1) (1)
Write-offs, net of recoveries 0 0 0 0
Foreign exchange disposals and other adjustments 1 0 1 0
Allowance account for credit losses of financial assets, Balance at end of period 2 2 2 2
Allowance For Credit Losses On Debt Securities [Member] | Debt securities FVOCI [member]        
Financial Instruments [Abstract]        
Allowance account for credit losses of financial assets, Balance at beginning of period 3 2 2 1
Provision for credit losses 0 0 1 1
Write-offs, net of recoveries 0 0 0 0
Foreign exchange disposals and other adjustments 0 0 0 0
Allowance account for credit losses of financial assets, Balance at end of period 3 2 3 2
At Amortized Cost [Member] | Loans [member]        
Financial Instruments [Abstract]        
Allowance account for credit losses of financial assets, Balance at beginning of period 8,419 8,613 8,689 8,094
Allowance account for credit losses of financial assets, Balance at end of period 8,508 8,682 8,508 8,682
At FVOCI [Member] | Loans [member]        
Financial Instruments [Abstract]        
Allowance account for credit losses of financial assets, Balance at beginning of period 0 0 0 0
Allowance account for credit losses of financial assets, Balance at end of period 0 0 0 0
Allowance For Off Balance Sheet Insturments [Member]        
Financial Instruments [Abstract]        
Allowance account for credit losses of financial assets, Balance at beginning of period 1,030 971 1,052 1,043
Allowance account for credit losses of financial assets, Balance at end of period 1,046 1,019 1,046 1,019
Residential mortgages [member] | Allowance For Loan Losses Including Off Balance Sheet Instruments [Member]        
Financial Instruments [Abstract]        
Allowance account for credit losses of financial assets, Balance at beginning of period 420 348 357 365
Provision for credit losses 12 1 81 (14)
Write-offs, net of recoveries (4) (5) (8) (6)
Foreign exchange disposals and other adjustments 2 1 0 0
Allowance account for credit losses of financial assets, Balance at end of period 430 345 430 345
Consumer instalment and other personal [member] | Allowance For Loan Losses Including Off Balance Sheet Instruments [Member]        
Financial Instruments [Abstract]        
Allowance account for credit losses of financial assets, Balance at beginning of period 2,215 2,221 2,273 2,133
Provision for credit losses 307 280 935 1,016
Write-offs, net of recoveries (342) (293) (1,003) (934)
Foreign exchange disposals and other adjustments 26 3 1 (4)
Allowance account for credit losses of financial assets, Balance at end of period 2,206 2,211 2,206 2,211
Credit card [member] | Allowance For Loan Losses Including Off Balance Sheet Instruments [Member]        
Financial Instruments [Abstract]        
Allowance account for credit losses of financial assets, Balance at beginning of period 2,783 2,716 2,790 2,699
Provision for credit losses 425 401 1,304 1,302
Write-offs, net of recoveries (436) (394) (1,267) (1,265)
Foreign exchange disposals and other adjustments 56 5 1 (8)
Allowance account for credit losses of financial assets, Balance at end of period 2,828 2,728 2,828 2,728
Businesses and government [member] | Allowance For Loan Losses Including Off Balance Sheet Instruments [Member]        
Financial Instruments [Abstract]        
Allowance account for credit losses of financial assets, Balance at beginning of period 4,031 4,299 4,321 3,940
Provision for credit losses 174 290 637 1,220
Write-offs, net of recoveries (187) (141) (817) (687)
Foreign exchange disposals and other adjustments 72 (31) (51) (56)
Allowance account for credit losses of financial assets, Balance at end of period $ 4,090 $ 4,417 $ 4,090 $ 4,417