v3.26.1
Fair Value Measurements - Summary of Fair Value Measurement of Assets and Liabilities (Details) - CAD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jul. 31, 2026
Apr. 30, 2026
Jul. 31, 2025
Jul. 31, 2026
Jul. 31, 2025
Oct. 31, 2025
Disclosure of fair value measurement of assets [line items]            
Trading Securities $ 204,818     $ 204,818   $ 192,303
Total FVTPL securities 23,760     23,760   21,354
FVOCI Securities 137,070     137,070   113,209
Derivative Assets            
Derivative Assets 67,997     67,997   57,151
Derivative Liabilities            
Derivative Liabilities 69,597     69,597   58,729
Interest expense for liabilities 10,220 $ 9,746 $ 10,246 29,486 $ 32,028  
Interest expense for liabilities carried at fair value            
Derivative Liabilities            
Interest expense for liabilities 1,253   832 3,497 2,612  
Interest expense for liabilities carried at amortized cost            
Derivative Liabilities            
Interest expense for liabilities 8,967   $ 9,414 25,989 $ 29,416  
Measured at fair value            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 204,818     204,818   192,303
Total FVTPL securities 23,760     23,760   21,354
FVOCI Securities           113,209
Loans 13,163     13,163   13,324
Other Assets 12,179     12,179   10,004
Deposits 64,679     64,679   56,162
Securities sold but not yet purchased 51,098     51,098   54,876
Other liabilities 47,414     47,414   34,238
Fair value liabilities 163,191     163,191   145,276
Derivative Assets            
Derivative Assets 67,997     67,997   57,151
Derivative Liabilities            
Derivative Liabilities 69,597     69,597   58,729
Measured at fair value | Canadian federal government            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 9,410     9,410   12,311
Total FVTPL securities 1,329     1,329   1,619
FVOCI Securities 59,193     59,193   45,335
Measured at fair value | Canadian provincial and municipal governments            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 9,219     9,219   9,035
Total FVTPL securities 2,393     2,393   1,578
FVOCI Securities 7,612     7,612   5,644
Measured at fair value | U.S. federal government            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 27,535     27,535   30,902
Total FVTPL securities 1,721     1,721   1,495
FVOCI Securities 27,057     27,057   20,809
Measured at fair value | U.S. states, municipalities and agencies            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 363     363   1,144
FVOCI Securities 4,939     4,939   5,634
Measured at fair value | Other governments            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 4,861     4,861   4,126
Total FVTPL securities 97     97   0
FVOCI Securities 4,294     4,294   4,065
Measured at fair value | NHA MBS, and U.S. agency MBS and CMO            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 74,426     74,426   56,450
Total FVTPL securities 18     18   18
FVOCI Securities 29,043     29,043   27,015
Measured at fair value | Corporate debt            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 16,583     16,583   11,614
Total FVTPL securities 9,973     9,973   8,908
FVOCI Securities 4,739     4,739   4,515
Measured at fair value | Trading loans            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 3,449     3,449   4,568
Measured at fair value | Corporate equity            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 58,972     58,972   62,153
Total FVTPL securities 8,229     8,229   7,736
FVOCI Securities 193     193   192
Measured at fair value | Residential mortgages            
Disclosure of fair value measurement of assets [line items]            
Loans 67     67   79
Measured at fair value | Business and government loans            
Disclosure of fair value measurement of assets [line items]            
Loans 13,096     13,096   13,245
Measured at fair value | Interest rate contracts            
Derivative Assets            
Derivative Assets 13,296     13,296   8,681
Derivative Liabilities            
Derivative Liabilities 13,018     13,018   10,099
Measured at fair value | Foreign exchange contracts            
Derivative Assets            
Derivative Assets 24,703     24,703   30,519
Derivative Liabilities            
Derivative Liabilities 22,180     22,180   26,049
Measured at fair value | Commodity contracts            
Derivative Assets            
Derivative Assets 2,904     2,904   1,462
Derivative Liabilities            
Derivative Liabilities 2,873     2,873   1,608
Measured at fair value | Equity contracts            
Derivative Assets            
Derivative Assets 27,061     27,061   16,488
Derivative Liabilities            
Derivative Liabilities 31,500     31,500   20,973
Measured at fair value | Credit default swaps            
Derivative Assets            
Derivative Assets 33     33   1
Derivative Liabilities            
Derivative Liabilities 26     26   0
Measured at fair value | Level 1            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 60,144     60,144   65,759
Total FVTPL securities 1,202     1,202   1,146
FVOCI Securities 3,473     3,473   1,211
Loans 0     0   0
Other Assets 10,719     10,719   8,521
Deposits 0     0   0
Securities sold but not yet purchased 13,284     13,284   14,998
Other liabilities 2,443     2,443   2,142
Fair value liabilities 15,727     15,727   17,140
Derivative Assets            
Derivative Assets 546     546   558
Derivative Liabilities            
Derivative Liabilities 985     985   389
Measured at fair value | Level 1 | Canadian federal government            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 455     455   757
Total FVTPL securities 0     0   56
FVOCI Securities 3,402     3,402   1,158
Measured at fair value | Level 1 | Canadian provincial and municipal governments            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 0     0   0
Total FVTPL securities 0     0   0
FVOCI Securities 0     0   0
Measured at fair value | Level 1 | U.S. federal government            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 1,865     1,865   3,308
Total FVTPL securities 0     0   0
FVOCI Securities 24     24   16
Measured at fair value | Level 1 | U.S. states, municipalities and agencies            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 0     0   0
FVOCI Securities 0     0   0
Measured at fair value | Level 1 | Other governments            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 241     241   199
Total FVTPL securities 0     0   0
FVOCI Securities 47     47   37
Measured at fair value | Level 1 | NHA MBS, and U.S. agency MBS and CMO            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 0     0   0
Total FVTPL securities 0     0   0
FVOCI Securities 0     0   0
Measured at fair value | Level 1 | Corporate debt            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 0     0   0
Total FVTPL securities 0     0   0
FVOCI Securities 0     0   0
Measured at fair value | Level 1 | Trading loans            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 0     0   0
Measured at fair value | Level 1 | Corporate equity            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 57,583     57,583   61,495
Total FVTPL securities 1,202     1,202   1,090
FVOCI Securities 0     0   0
Measured at fair value | Level 1 | Residential mortgages            
Disclosure of fair value measurement of assets [line items]            
Loans 0     0   0
Measured at fair value | Level 1 | Business and government loans            
Disclosure of fair value measurement of assets [line items]            
Loans 0     0   0
Measured at fair value | Level 1 | Interest rate contracts            
Derivative Assets            
Derivative Assets 114     114   15
Derivative Liabilities            
Derivative Liabilities 81     81   18
Measured at fair value | Level 1 | Foreign exchange contracts            
Derivative Assets            
Derivative Assets 95     95   43
Derivative Liabilities            
Derivative Liabilities 0     0   0
Measured at fair value | Level 1 | Commodity contracts            
Derivative Assets            
Derivative Assets 155     155   225
Derivative Liabilities            
Derivative Liabilities 141     141   196
Measured at fair value | Level 1 | Equity contracts            
Derivative Assets            
Derivative Assets 182     182   275
Derivative Liabilities            
Derivative Liabilities 763     763   175
Measured at fair value | Level 1 | Credit default swaps            
Derivative Assets            
Derivative Assets 0     0   0
Derivative Liabilities            
Derivative Liabilities 0     0   0
Measured at fair value | Level 2            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 144,674     144,674   126,544
Total FVTPL securities 16,375     16,375   14,384
FVOCI Securities 133,404     133,404   111,806
Loans 12,853     12,853   13,000
Other Assets 0     0   0
Deposits 64,679     64,679   56,162
Securities sold but not yet purchased 37,814     37,814   39,878
Other liabilities 44,773     44,773   32,096
Fair value liabilities 147,266     147,266   128,136
Derivative Assets            
Derivative Assets 67,444     67,444   56,568
Derivative Liabilities            
Derivative Liabilities 68,579     68,579   58,335
Measured at fair value | Level 2 | Canadian federal government            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 8,955     8,955   11,554
Total FVTPL securities 1,329     1,329   1,563
FVOCI Securities 55,791     55,791   44,177
Measured at fair value | Level 2 | Canadian provincial and municipal governments            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 9,219     9,219   9,035
Total FVTPL securities 2,393     2,393   1,578
FVOCI Securities 7,612     7,612   5,644
Measured at fair value | Level 2 | U.S. federal government            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 25,670     25,670   27,594
Total FVTPL securities 1,721     1,721   1,495
FVOCI Securities 27,033     27,033   20,793
Measured at fair value | Level 2 | U.S. states, municipalities and agencies            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 363     363   1,144
FVOCI Securities 4,939     4,939   5,634
Measured at fair value | Level 2 | Other governments            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 4,620     4,620   3,927
Total FVTPL securities 97     97   0
FVOCI Securities 4,247     4,247   4,028
Measured at fair value | Level 2 | NHA MBS, and U.S. agency MBS and CMO            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 74,426     74,426   56,450
Total FVTPL securities 18     18   18
FVOCI Securities 29,043     29,043   27,015
Measured at fair value | Level 2 | Corporate debt            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 16,583     16,583   11,614
Total FVTPL securities 9,961     9,961   8,908
FVOCI Securities 4,739     4,739   4,515
Measured at fair value | Level 2 | Trading loans            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 3,449     3,449   4,568
Measured at fair value | Level 2 | Corporate equity            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 1,389     1,389   658
Total FVTPL securities 856     856   822
FVOCI Securities 0     0   0
Measured at fair value | Level 2 | Residential mortgages            
Disclosure of fair value measurement of assets [line items]            
Loans 67     67   79
Measured at fair value | Level 2 | Business and government loans            
Disclosure of fair value measurement of assets [line items]            
Loans 12,786     12,786   12,921
Measured at fair value | Level 2 | Interest rate contracts            
Derivative Assets            
Derivative Assets 13,182     13,182   8,666
Derivative Liabilities            
Derivative Liabilities 12,937     12,937   10,081
Measured at fair value | Level 2 | Foreign exchange contracts            
Derivative Assets            
Derivative Assets 24,604     24,604   30,474
Derivative Liabilities            
Derivative Liabilities 22,153     22,153   26,049
Measured at fair value | Level 2 | Commodity contracts            
Derivative Assets            
Derivative Assets 2,748     2,748   1,224
Derivative Liabilities            
Derivative Liabilities 2,728     2,728   1,412
Measured at fair value | Level 2 | Equity contracts            
Derivative Assets            
Derivative Assets 26,877     26,877   16,203
Derivative Liabilities            
Derivative Liabilities 30,736     30,736   20,793
Measured at fair value | Level 2 | Credit default swaps            
Derivative Assets            
Derivative Assets 33     33   1
Derivative Liabilities            
Derivative Liabilities 25     25   0
Measured at fair value | Level 3            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 0     0   0
Total FVTPL securities 6,183     6,183   5,824
FVOCI Securities 193     193   192
Loans 310     310   324
Other Assets 1,460     1,460   1,483
Deposits 0     0   0
Securities sold but not yet purchased 0     0   0
Other liabilities 198     198   0
Fair value liabilities 198     198   0
Derivative Assets            
Derivative Assets 7     7   25
Derivative Liabilities            
Derivative Liabilities 33     33   5
Measured at fair value | Level 3 | Canadian federal government            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 0     0   0
Total FVTPL securities 0     0   0
FVOCI Securities 0     0   0
Measured at fair value | Level 3 | Canadian provincial and municipal governments            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 0     0   0
Total FVTPL securities 0     0   0
FVOCI Securities 0     0   0
Measured at fair value | Level 3 | U.S. federal government            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 0     0   0
Total FVTPL securities 0     0   0
FVOCI Securities 0     0   0
Measured at fair value | Level 3 | U.S. states, municipalities and agencies            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 0     0   0
FVOCI Securities 0     0   0
Measured at fair value | Level 3 | Other governments            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 0     0   0
Total FVTPL securities 0     0   0
FVOCI Securities 0     0   0
Measured at fair value | Level 3 | NHA MBS, and U.S. agency MBS and CMO            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 0     0   0
Total FVTPL securities 0     0   0
FVOCI Securities 0     0   0
Measured at fair value | Level 3 | Corporate debt            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 0     0   0
Total FVTPL securities 12     12   0
FVOCI Securities 0     0   0
Measured at fair value | Level 3 | Trading loans            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 0     0   0
Measured at fair value | Level 3 | Corporate equity            
Disclosure of fair value measurement of assets [line items]            
Trading Securities 0     0   0
Total FVTPL securities 6,171     6,171   5,824
FVOCI Securities 193     193   192
Measured at fair value | Level 3 | Residential mortgages            
Disclosure of fair value measurement of assets [line items]            
Loans 0     0   0
Measured at fair value | Level 3 | Business and government loans            
Disclosure of fair value measurement of assets [line items]            
Loans           324
Measured at fair value | Level 3 | Interest rate contracts            
Derivative Assets            
Derivative Assets 0     0   0
Derivative Liabilities            
Derivative Liabilities 0     0   0
Measured at fair value | Level 3 | Foreign exchange contracts            
Derivative Assets            
Derivative Assets 4     4   2
Derivative Liabilities            
Derivative Liabilities 27     27   0
Measured at fair value | Level 3 | Commodity contracts            
Derivative Assets            
Derivative Assets 1     1   13
Derivative Liabilities            
Derivative Liabilities 4     4   0
Measured at fair value | Level 3 | Equity contracts            
Derivative Assets            
Derivative Assets 2     2   10
Derivative Liabilities            
Derivative Liabilities 1     1   5
Measured at fair value | Level 3 | Credit default swaps            
Derivative Assets            
Derivative Assets 0     0   0
Derivative Liabilities            
Derivative Liabilities $ 1     $ 1   $ 0