v3.24.1.1.u2
Loans, Impaired Loans, and Allowance for Credit Losses (Summary of Allowance for Credit Losses) (Details) - CAD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Apr. 30, 2024
Apr. 30, 2023
Apr. 30, 2024
Apr. 30, 2023
Financial Instruments [Abstract]        
Allowance account for credit losses of financial assets, Balance at beginning of period $ 8,268 $ 7,479 $ 8,189 $ 7,366
Provision for credit losses 1,071 599 2,072 1,289
Write-offs, net of recoveries (899) (524) (1,658) (997)
Foreign exchange disposals and other adjustments 110 93 (53) (11)
Allowance account for credit losses of financial assets, Balance at end of period 8,550 7,647 8,550 7,647
Loans [member]        
Financial Instruments [Abstract]        
Allowance account for credit losses of financial assets, Balance at beginning of period 7,265 6,492 7,136 6,432
Allowance account for credit losses of financial assets, Balance at end of period 7,545 6,644 7,545 6,644
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 8,265 7,477 8,185 7,363
Provision for credit losses 1,072 600 2,073 1,290
Write-offs, net of recoveries (899) (524) (1,658) (997)
Foreign exchange disposals and other adjustments 109 91 (53) (12)
Allowance account for credit losses of financial assets, Balance at end of period 8,547 7,644 8,547 7,644
Allowance For Credit Losses On Debt Securities [Member]        
Financial Instruments [Abstract]        
Allowance account for credit losses of financial assets, Balance at beginning of period 3 2 4 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 2 0 1
Allowance account for credit losses of financial assets, Balance at end of period 3 3 3 3
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 1 2 1
Provision for credit losses 0 0 0 0
Write-offs, net of recoveries 0 0 0 0
Foreign exchange disposals and other adjustments 0 1 0 1
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 1 1 2 2
Provision for credit losses (1) (1) (1) (1)
Write-offs, net of recoveries 0 0 0 0
Foreign exchange disposals and other adjustments 1 1 0 0
Allowance account for credit losses of financial assets, Balance at end of period 1 1 1 1
At Amortized Cost [Member] | Loans [member]        
Financial Instruments [Abstract]        
Allowance account for credit losses of financial assets, Balance at beginning of period 7,265 6,492 7,136 6,432
Allowance account for credit losses of financial assets, Balance at end of period 7,545 6,644 7,545 6,644
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 1,000 985 1,049 931
Allowance account for credit losses of financial assets, Balance at end of period 1,002 1,000 1,002 1,000
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 410 330 403 323
Provision for credit losses (8) 4 0 16
Write-offs, net of recoveries (1) (3) (3) (4)
Foreign exchange disposals and other adjustments 2 3 3 (1)
Allowance account for credit losses of financial assets, Balance at end of period 403 334 403 334
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 1,979 1,753 1,895 1,704
Provision for credit losses 361 183 743 445
Write-offs, net of recoveries (288) (181) (563) (377)
Foreign exchange disposals and other adjustments 20 11 (3) (6)
Allowance account for credit losses of financial assets, Balance at end of period 2,072 1,766 2,072 1,766
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 2,577 2,407 2,577 2,352
Provision for credit losses 423 327 853 664
Write-offs, net of recoveries (403) (283) (772) (528)
Foreign exchange disposals and other adjustments 47 29 (14) (8)
Allowance account for credit losses of financial assets, Balance at end of period 2,644 2,480 2,644 2,480
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 3,299 2,987 3,310 2,984
Provision for credit losses 296 86 477 165
Write-offs, net of recoveries (207) (57) (320) (88)
Foreign exchange disposals and other adjustments 40 48 (39) 3
Allowance account for credit losses of financial assets, Balance at end of period $ 3,428 $ 3,064 $ 3,428 $ 3,064