v3.26.1
Loans and Allowances for Credit Losses, Modifications (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Financing Receivable, Loan Modifications [Line Items]    
Financing Receivable, Modified in Period, Amount $ 30.0 $ 3.3
Financing Receivable, Modified, Subsequent Default $ 4.2 6.4
Number of Days Past Due Following Modification to be Considered a Payment Default 30 days  
Commercial real estate [Member]    
Financing Receivable, Loan Modifications [Line Items]    
Financing Receivable, Modified in Period, Amount $ 16.0  
Healthcare [Member] | Commercial [Member]    
Financing Receivable, Loan Modifications [Line Items]    
Financing Receivable, Modified in Period, Amount 9.2  
US Government Agency Insured Loans [Member] | Residential mortgage [Member] | Loans to individuals [Member] | Extended Maturity and Interest Rate Reduction    
Financing Receivable, Loan Modifications [Line Items]    
Financing Receivable, Modified in Period, Amount   2.6
Financing Receivable, Modified, Subsequent Default $ 3.3 $ 5.9