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Regulatory Capital (Narrative) (Details)
Oct. 31, 2025
Nov. 01, 2023
Disclosure Of Regulatory Capital [Line Items]    
Domestic Stability Buffer   3.50%
Basel III [Member]    
Disclosure Of Regulatory Capital [Line Items]    
Minimum leverage ratio 3.50%  
Target Total Loss Absorbing Capacity Leverage Ratio 7.25%  
Domestic systemically important banks addition leverage ratio 0.50%  
DSIB And GSIB surcharges rate 1.00%  
Basel III [Member] | Regulatory Target Ratios [Member]    
Disclosure Of Regulatory Capital [Line Items]    
Target Total Loss Absorbing Capacity Leverage Ratio   25.00%
Total Capital Target Ratio   15.00%
Basel III [Member] | Regulatory Target Ratios [Member] | Tier 1 [Member]    
Disclosure Of Regulatory Capital [Line Items]    
Tier1 Target Ratio   13.00%
Basel III [Member] | Regulatory Target Ratios [Member] | CET 1 [Member]    
Disclosure Of Regulatory Capital [Line Items]    
CET1 Target Ratio   11.50%