v3.26.1
Allowance for Credit Losses (Economic forecast Model Variables) (Details) - Expected
 6 Months Ended
Jun. 30, 2030
Jun. 30, 2029
Jun. 30, 2028
Jun. 30, 2027
Moody's Analytics' May 2026 consensus        
Financing Receivable, Allowance for Credit Loss [Line Items]        
U.S. real GDP average annualized growth 2.10% 2.10% 2.00% 2.00%
U.S. unemployment rate average 4.20% 4.20% 4.10% 4.40%
Forecasted average federal funds rate 3.30% 3.30% 3.40% 3.60%
Moody's Analytics' May 2026 S2 scenario (the "S2 Scenario")        
Financing Receivable, Allowance for Credit Loss [Line Items]        
U.S. real GDP average annualized growth 2.70% 2.70% 2.50% 0.50%
U.S. unemployment rate average 4.50% 4.50% 4.70% 6.60%
Forecasted average federal funds rate 3.00% 3.10% 2.20% 2.30%