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Capital Management - Summary of Regulatory Capital Measure and Risk-Weighted Assets (Detail) - CAD ($) $ in Millions | Oct. 31, 2025 | Oct. 31, 2024
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Fixed Rate of Instruments [Abstract] |  |
CET1 Capital | $ 58,286 | $ 57,054
Tier 1 Capital | 65,890 | 64,735
Total Capital | 75,562 | 73,911
TLAC | 129,957 | 123,288
Risk-Weighted Assets | 437,945 | 420,838
Leverage Exposures | $ 1,521,813 | $ 1,484,962
CET1 Ratio | 13.30% | 13.60%
Tier 1 Capital Ratio | 15.00% | 15.40%
Total Capital Ratio | 17.30% | 17.60%
TLAC Ratio | 29.70% | 29.30%
Leverage Ratio | 4.30% | 4.40%
TLAC Leverage Ratio | 8.50% | 8.30%

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