Premises and Equipment - Summary of Premises and Equipment (Parenthetical) (Detail) - CAD ($) $ in Millions |
Oct. 31, 2024 |
Oct. 31, 2023 |
|---|---|---|
| Disclosure of detailed information about property, plant and equipment [line items] | ||
| Total contractual commitments to purchase premises and equipment | $ 137 | $ 120 |
| Subject to operating leases and carried at cost less accumulated amortization [member] | ||
| Disclosure of detailed information about property, plant and equipment [line items] | ||
| Investment properties | 186 | 0 |
| Fair value, determined by a combination of internal investment professionals and external independent property appraisers with the relevant professional qualifications and experience | $ 188 | $ 0 |