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Contractual Maturities of Assets and Liabilities and Off-Balance Sheet Commitments - Summary of Remaining Contractual Maturity (Detail) - CAD ($) $ in Millions | Oct. 31, 2025 | Oct. 31, 2024
--- | --- | ---
Assets |  |
Cash and cash equivalents | $ 67,484 | $ 65,098
Interest bearing deposits with banks | 2,838 | 3,640
Securities | 423,476 | 396,880
Securities borrowed or purchased under resale agreements | 129,421 | 110,907
Loans |  |
Residential mortgages | 196,033 | 191,080
Consumer instalment and other personal | 92,741 | 92,687
Credit cards | 12,649 | 13,612
Business and government | 380,788 | 384,993
Allowance for credit losses | (5,050) | (4,356)
Loans,net | 677,161 | 678,016
Other Assets |  |
Derivative instruments | 57,151 | 47,253
Customers' liability under acceptances | 711 | 359
Receivable from brokers, dealers and clients | 43,167 | 31,916
Other | 75,393 | 75,578
Other assets | 176,422 | 155,106
Total Assets | 1,476,802 | 1,409,647
Deposits |  |
Deposits | 976,202 | 982,440
Other liabilities |  |
Derivative instruments | 58,729 | 58,303
Acceptances | 711 | 359
Securities sold but not yet purchased | 54,876 | 35,030
Securities lent or sold under repurchase agreements | 134,967 | 110,791
Securitization and structured entities' liabilities | 51,562 | 40,164
Insurance-related liabilities | 20,436 | 18,770
Payable to brokers, dealers and clients | 45,170 | 34,407
Other | 37,549 | 36,720
Total other liabilities | 404,000 | 334,544
Subordinated debt | 8,500 | 8,377
Total Equity | 88,100 | 84,286
Total Liabilities and Equity | 1,476,802 | 1,409,647
Commitments to extend credit [Member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 246,852 | 236,271
Letter of credit [Member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 31,913 | 32,416
Backstop liquidity facilities [member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 18,358 | 18,224
Other commitments [member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 2,090 | 1,459
0 -1 month [member] |  |
Assets |  |
Cash and cash equivalents | 65,232 | 62,827
Interest bearing deposits with banks | 2,461 | 2,513
Securities | 4,613 | 6,787
Securities borrowed or purchased under resale agreements | 105,268 | 85,185
Loans |  |
Residential mortgages | 2,596 | 1,683
Consumer instalment and other personal | 691 | 581
Credit cards | 0 |
Business and government | 11,283 | 8,647
Allowance for credit losses | 0 |
Loans,net | 14,570 | 10,911
Other Assets |  |
Derivative instruments | 6,336 | 5,573
Customers' liability under acceptances | 711 | 359
Receivable from brokers, dealers and clients | 43,167 | 31,916
Other | 3,752 | 3,847
Other assets | 53,966 | 41,695
Total Assets | 246,110 | 209,918
Deposits |  |
Deposits | 37,399 | 47,637
Other liabilities |  |
Derivative instruments | 5,789 | 6,769
Acceptances | 711 | 359
Securities sold but not yet purchased | 54,876 | 35,030
Securities lent or sold under repurchase agreements | 113,549 | 99,364
Securitization and structured entities' liabilities | 1 | 44
Insurance-related liabilities | 90 | 93
Payable to brokers, dealers and clients | 45,170 | 34,407
Other | 11,733 | 12,409
Total other liabilities | 231,919 | 188,475
Subordinated debt | 0 |
Total Equity | 0 |
Total Liabilities and Equity | 269,318 | 236,112
0 -1 month [member] | Commitments to extend credit [Member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 2,889 | 3,720
0 -1 month [member] | Letter of credit [Member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 2,372 | 2,109
0 -1 month [member] | Backstop liquidity facilities [member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 429 | 283
0 -1 month [member] | Other commitments [member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 59 | 30
1 - 3 Months [member] |  |
Assets |  |
Cash and cash equivalents | 0 |
Interest bearing deposits with banks | 328 | 628
Securities | 5,026 | 14,011
Securities borrowed or purchased under resale agreements | 15,571 | 16,803
Loans |  |
Residential mortgages | 6,037 | 3,284
Consumer instalment and other personal | 1,584 | 974
Credit cards | 0 |
Business and government | 14,430 | 14,418
Allowance for credit losses | 0 |
Loans,net | 22,051 | 18,676
Other Assets |  |
Derivative instruments | 10,429 | 7,996
Customers' liability under acceptances | 0 |
Receivable from brokers, dealers and clients | 0 |
Other | 1,155 | 1,012
Other assets | 11,584 | 9,008
Total Assets | 54,560 | 59,126
Deposits |  |
Deposits | 65,186 | 74,759
Other liabilities |  |
Derivative instruments | 9,844 | 10,541
Acceptances | 0 |
Securities sold but not yet purchased | 0 |
Securities lent or sold under repurchase agreements | 17,158 | 7,777
Securitization and structured entities' liabilities | 2,375 | 981
Insurance-related liabilities | 82 | 89
Payable to brokers, dealers and clients | 0 |
Other | 5,244 | 2,968
Total other liabilities | 34,703 | 22,356
Subordinated debt | 25 |
Total Equity | 0 |
Total Liabilities and Equity | 99,914 | 97,115
1 - 3 Months [member] | Commitments to extend credit [Member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 4,405 | 5,220
1 - 3 Months [member] | Letter of credit [Member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 5,167 | 5,235
1 - 3 Months [member] | Backstop liquidity facilities [member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 72 | 213
1 - 3 Months [member] | Other commitments [member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 92 | 78
3-6 month [member] |  |
Assets |  |
Cash and cash equivalents | 0 |
Interest bearing deposits with banks | 47 | 481
Securities | 7,358 | 7,840
Securities borrowed or purchased under resale agreements | 6,399 | 5,701
Loans |  |
Residential mortgages | 10,583 | 6,413
Consumer instalment and other personal | 3,079 | 1,703
Credit cards | 0 |
Business and government | 18,395 | 16,461
Allowance for credit losses | 0 |
Loans,net | 32,057 | 24,577
Other Assets |  |
Derivative instruments | 5,146 | 7,211
Customers' liability under acceptances | 0 |
Receivable from brokers, dealers and clients | 0 |
Other | 455 | 948
Other assets | 5,601 | 8,159
Total Assets | 51,462 | 46,758
Deposits |  |
Deposits | 66,458 | 69,479
Other liabilities |  |
Derivative instruments | 6,317 | 10,828
Acceptances | 0 |
Securities sold but not yet purchased | 0 |
Securities lent or sold under repurchase agreements | 762 | 721
Securitization and structured entities' liabilities | 200 | 1,072
Insurance-related liabilities | 21 | 18
Payable to brokers, dealers and clients | 0 |
Other | 222 | 805
Total other liabilities | 7,522 | 13,444
Subordinated debt | 0 |
Total Equity | 0 |
Total Liabilities and Equity | 73,980 | 82,923
3-6 month [member] | Commitments to extend credit [Member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 10,029 | 10,229
3-6 month [member] | Letter of credit [Member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 6,192 | 6,113
3-6 month [member] | Backstop liquidity facilities [member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 0 | 213
3-6 month [member] | Other commitments [member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 154 | 94
6-9 month [member] |  |
Assets |  |
Cash and cash equivalents | 0 |
Interest bearing deposits with banks | 2 | 18
Securities | 6,635 | 6,707
Securities borrowed or purchased under resale agreements | 1,880 | 2,330
Loans |  |
Residential mortgages | 14,475 | 6,653
Consumer instalment and other personal | 4,292 | 1,827
Credit cards | 0 |
Business and government | 23,398 | 19,448
Allowance for credit losses | 0 |
Loans,net | 42,165 | 27,928
Other Assets |  |
Derivative instruments | 4,122 | 2,482
Customers' liability under acceptances | 0 |
Receivable from brokers, dealers and clients | 0 |
Other | 26 | 31
Other assets | 4,148 | 2,513
Total Assets | 54,830 | 39,496
Deposits |  |
Deposits | 58,424 | 68,110
Other liabilities |  |
Derivative instruments | 4,517 | 3,311
Acceptances | 0 |
Securities sold but not yet purchased | 0 |
Securities lent or sold under repurchase agreements | 0 | 106
Securitization and structured entities' liabilities | 481 | 2,183
Insurance-related liabilities | 23 | 18
Payable to brokers, dealers and clients | 0 |
Other | 339 | 144
Total other liabilities | 5,360 | 5,762
Subordinated debt | 0 |
Total Equity | 0 |
Total Liabilities and Equity | 63,784 | 73,872
6-9 month [member] | Commitments to extend credit [Member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 15,588 | 16,052
6-9 month [member] | Letter of credit [Member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 5,787 | 6,761
6-9 month [member] | Backstop liquidity facilities [member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 2,304 | 3,408
6-9 month [member] | Other commitments [member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 144 | 87
9-12 month [Member] |  |
Assets |  |
Cash and cash equivalents | 0 |
Interest bearing deposits with banks | 0 |
Securities | 11,121 | 9,720
Securities borrowed or purchased under resale agreements | 303 | 888
Loans |  |
Residential mortgages | 13,025 | 9,252
Consumer instalment and other personal | 3,376 | 2,671
Credit cards | 0 |
Business and government | 20,399 | 21,828
Allowance for credit losses | 0 |
Loans,net | 36,800 | 33,751
Other Assets |  |
Derivative instruments | 3,997 | 1,660
Customers' liability under acceptances | 0 |
Receivable from brokers, dealers and clients | 0 |
Other | 8 | 14
Other assets | 4,005 | 1,674
Total Assets | 52,229 | 46,033
Deposits |  |
Deposits | 49,572 | 48,835
Other liabilities |  |
Derivative instruments | 4,264 | 2,160
Acceptances | 0 |
Securities sold but not yet purchased | 0 |
Securities lent or sold under repurchase agreements | 0 | 1,016
Securitization and structured entities' liabilities | 1,377 | 152
Insurance-related liabilities | 33 | 30
Payable to brokers, dealers and clients | 0 |
Other | 120 | 1,611
Total other liabilities | 5,794 | 4,969
Subordinated debt | 0 |
Total Equity | 0 |
Total Liabilities and Equity | 55,366 | 53,804
9-12 month [Member] | Commitments to extend credit [Member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 22,066 | 16,284
9-12 month [Member] | Letter of credit [Member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 5,982 | 6,163
9-12 month [Member] | Backstop liquidity facilities [member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 2,845 | 1,132
9-12 month [Member] | Other commitments [member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 136 | 187
1-2 years [member] |  |
Assets |  |
Cash and cash equivalents | 0 |
Interest bearing deposits with banks | 0 |
Securities | 43,792 | 21,264
Securities borrowed or purchased under resale agreements | 0 |
Loans |  |
Residential mortgages | 46,764 | 52,489
Consumer instalment and other personal | 12,991 | 14,815
Credit cards | 0 |
Business and government | 61,935 | 63,613
Allowance for credit losses | 0 |
Loans,net | 121,690 | 130,917
Other Assets |  |
Derivative instruments | 7,688 | 6,365
Customers' liability under acceptances | 0 |
Receivable from brokers, dealers and clients | 0 |
Other | 15 | 13
Other assets | 7,703 | 6,378
Total Assets | 173,185 | 158,559
Deposits |  |
Deposits | 55,403 | 51,789
Other liabilities |  |
Derivative instruments | 7,180 | 6,470
Acceptances | 0 |
Securities sold but not yet purchased | 0 |
Securities lent or sold under repurchase agreements | 3,498 | 1,807
Securitization and structured entities' liabilities | 2,980 | 4,353
Insurance-related liabilities | 91 | 83
Payable to brokers, dealers and clients | 0 |
Other | 2,567 | 2,492
Total other liabilities | 16,316 | 15,205
Subordinated debt | 0 | 25
Total Equity | 0 |
Total Liabilities and Equity | 71,719 | 67,019
1-2 years [member] | Commitments to extend credit [Member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 55,191 | 47,054
1-2 years [member] | Letter of credit [Member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 2,530 | 2,310
1-2 years [member] | Backstop liquidity facilities [member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 4,543 | 3,047
1-2 years [member] | Other commitments [member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 444 | 399
2-5 years [member] |  |
Assets |  |
Cash and cash equivalents | 0 |
Interest bearing deposits with banks | 0 |
Securities | 84,041 | 84,775
Securities borrowed or purchased under resale agreements | 0 |
Loans |  |
Residential mortgages | 66,853 | 77,867
Consumer instalment and other personal | 20,184 | 24,595
Credit cards | 0 |
Business and government | 98,451 | 105,740
Allowance for credit losses | 0 |
Loans,net | 185,488 | 208,202
Other Assets |  |
Derivative instruments | 10,420 | 8,374
Customers' liability under acceptances | 0 |
Receivable from brokers, dealers and clients | 0 |
Other | 14 | 13
Other assets | 10,434 | 8,387
Total Assets | 279,963 | 301,364
Deposits |  |
Deposits | 68,983 | 87,297
Other liabilities |  |
Derivative instruments | 10,924 | 9,112
Acceptances | 0 |
Securities sold but not yet purchased | 0 |
Securities lent or sold under repurchase agreements | 0 |
Securitization and structured entities' liabilities | 10,287 | 9,913
Insurance-related liabilities | 220 | 195
Payable to brokers, dealers and clients | 0 |
Other | 2,784 | 4,058
Total other liabilities | 24,215 | 23,278
Subordinated debt | 25 | 25
Total Equity | 0 |
Total Liabilities and Equity | 93,223 | 110,600
2-5 years [member] | Commitments to extend credit [Member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 130,267 | 130,664
2-5 years [member] | Letter of credit [Member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 3,807 | 3,689
2-5 years [member] | Backstop liquidity facilities [member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 7,804 | 9,110
2-5 years [member] | Other commitments [member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 805 | 486
Over 5 years [member] |  |
Assets |  |
Cash and cash equivalents | 0 |
Interest bearing deposits with banks | 0 |
Securities | 190,809 | 172,886
Securities borrowed or purchased under resale agreements | 0 |
Loans |  |
Residential mortgages | 35,365 | 33,227
Consumer instalment and other personal | 19,079 | 18,830
Credit cards | 0 |
Business and government | 36,768 | 32,444
Allowance for credit losses | 0 |
Loans,net | 91,212 | 84,501
Other Assets |  |
Derivative instruments | 9,013 | 7,592
Customers' liability under acceptances | 0 |
Receivable from brokers, dealers and clients | 0 |
Other | 7,990 | 7,717
Other assets | 17,003 | 15,309
Total Assets | 299,024 | 272,696
Deposits |  |
Deposits | 29,023 | 25,602
Other liabilities |  |
Derivative instruments | 9,894 | 9,112
Acceptances | 0 |
Securities sold but not yet purchased | 0 |
Securities lent or sold under repurchase agreements | 0 |
Securitization and structured entities' liabilities | 33,861 | 21,466
Insurance-related liabilities | 745 | 701
Payable to brokers, dealers and clients | 0 |
Other | 2,659 | 2,799
Total other liabilities | 47,159 | 34,078
Subordinated debt | 8,450 | 8,327
Total Equity | 0 |
Total Liabilities and Equity | 84,632 | 68,007
Over 5 years [member] | Commitments to extend credit [Member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 6,417 | 7,048
Over 5 years [member] | Letter of credit [Member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 76 | 36
Over 5 years [member] | Backstop liquidity facilities [member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 361 | 818
Over 5 years [member] | Other commitments [member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 256 | 98
No maturity [member] |  |
Assets |  |
Cash and cash equivalents | 2,252 | 2,271
Interest bearing deposits with banks | 0 |
Securities | 70,081 | 72,890
Securities borrowed or purchased under resale agreements | 0 |
Loans |  |
Residential mortgages | 335 | 212
Consumer instalment and other personal | 27,465 | 26,691
Credit cards | 12,649 | 13,612
Business and government | 95,729 | 102,394
Allowance for credit losses | (5,050) | (4,356)
Loans,net | 131,128 | 138,553
Other Assets |  |
Derivative instruments | 0 |
Customers' liability under acceptances | 0 |
Receivable from brokers, dealers and clients | 0 |
Other | 61,978 | 61,983
Other assets | 61,978 | 61,983
Total Assets | 265,439 | 275,697
Deposits |  |
Deposits | 545,754 | 508,932
Other liabilities |  |
Derivative instruments | 0 |
Acceptances | 0 |
Securities sold but not yet purchased | 0 |
Securities lent or sold under repurchase agreements | 0 |
Securitization and structured entities' liabilities | 0 |
Insurance-related liabilities | 19,131 | 17,543
Payable to brokers, dealers and clients | 0 |
Other | 11,881 | 9,434
Total other liabilities | 31,012 | 26,977
Subordinated debt | 0 |
Total Equity | 88,100 | 84,286
Total Liabilities and Equity | 664,866 | $ 620,195
No maturity [member] | Commitments to extend credit [Member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 0 |
No maturity [member] | Letter of credit [Member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 0 |
No maturity [member] | Backstop liquidity facilities [member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | 0 |
No maturity [member] | Other commitments [member] |  |
Off-Balance Sheet Commitments |  |
Off-Balance Sheet Commitments | $ 0 |

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