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v3.25.3

Capital Management - Additional Information (Detail) | 3 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Apr. 30, 2023 | Oct. 31, 2025 | Jun. 30, 2025 | Jun. 30, 2023 | Feb. 01, 2023 | Dec. 31, 2022
Disclosure of regulatory capital [Line Items] |  |  |  |  |  |
Minimum capital adequate ratio for Common Equity Tier 1 Capital |  | 7.00% |  |  |  |
Minimum capital adequate ratio for Tier 1 Capital |  | 8.50% |  |  |  |
Minimum capital adequate ratio for regulatory capital |  | 10.50% |  |  |  |
Increase in minimum capital ratio requirements across all tiers of capital |  | 1.00% |  |  |  |
Domestic Stability Buffer |  |  | 3.50% | 3.50% |  | 3.00%
Domestic stability buffer threshold percentage surcharge |  |  |  |  | 1.00% |
Common Equity Tier 1 Capital percentage |  |  |  |  | 11.50% |
Tier 1 capital ratio |  |  |  |  | 13.00% |
Total capital ratio |  |  |  |  | 15.00% |
Domestic stability buffer threshold percentage increase | 0.50% |  |  |  |  |
Minimum material operating buffer percentage | 3.50% |  |  |  |  |
Bottom of range [member] |  |  |  |  |  |
Disclosure of regulatory capital [Line Items] |  |  |  |  |  |
Domestic Stability Buffer |  |  |  |  | 0.00% |
Top of range [member] |  |  |  |  |  |
Disclosure of regulatory capital [Line Items] |  |  |  |  |  |
Domestic Stability Buffer |  |  |  |  | 4.00% |

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- Definition Disclosure of regulatory capital [Line Items] + References No definition available. + Details
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- Definition Domestic stability buffer threshold percentage. + References No definition available. + Details
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- Definition Domestic stability buffer threshold percentage surcharge. + References No definition available. + Details
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- Definition Increase in minimum capital ratio requirements across all tiers of capital. + References No definition available. + Details
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- Definition Minimum capital adequate ratio for common equity tier one capital. + References No definition available. + Details
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- Definition Minimum capital adequate ratio for regulatory capital. + References No definition available. + Details
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- Definition Minimum capital adequate ratio for tier one capital. + References No definition available. + Details
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- Definition Minimum material operating buffer percentage. + References No definition available. + Details
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- Definition Tier one capital threshold ratio. + References No definition available. + Details
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- Details
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