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Share Capital - Schedule of Regulatory Capital and Ratios (Detail) - CAD ($) $ in Millions | Jul. 31, 2025 | Oct. 31, 2024
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Disclosure of Basel III captial disclosure [line items] |  |
Common Equity Tier 1 (CET1) capital | $ 46,616 | $ 44,516
Tier 1 capital | 53,303 | 49,481
Total capital | 61,338 | 56,809
Total risk-weighted assets (RWA) | $ 347,712 | $ 333,502
CET1 ratio | 13.40% | 13.30%
Tier 1 capital ratio | 15.30% | 14.80%
Total capital ratio | 17.60% | 17.00%
Leverage ratio exposure | $ 1,244,201 | $ 1,155,432
Leverage ratio | 4.30% | 4.30%
TLAC available | $ 114,311 | $ 101,062
TLAC ratio | 32.90% | 30.30%
TLAC leverage ratio | 9.20% | 8.70%

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