Shareholders' Equity - Basel III Minimum Capital Adequacy Requirements after Full Phase In (Details)	Dec. 31, 2024	Dec. 31, 2023
Basel III Minimum for Capital Adequacy Purposes
Total Capital to RWA	0.0800	0.0800
Tier 1 Capital to RWA	0.0600	0.0600
Tier 1 Capital to AA, or Leverage Ratio	0.0400	0.0400
Common equity tier 1 capital to RWA	4.50%	4.50%
Basel III Additional Capital Conservation Buffer
Basel III additional capital conservation buffer at full phase-in	2.50%	2.50%
Basel III "Adequate" Ratio with Capital Conservation Buffer
Total Capital to RWA	10.50%
Tier 1 Capital to RWA	8.50%
Tier 1 Capital to AA, or Leverage Ratio	4.00%
Common equity tier 1 capital to RWA	7.00%