v3.25.4
Loans and Allowance for Credit Losses on Loans - Age Analysis (Details) - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total $ 24,147,002,000 $ 22,542,823,000
Non-accrual 116,880,000  
Non-accrual With No Allowance 6,288,000  
Non-accrual loans earning interest income on cash basis 470,000 360,000
Interest income on non-accrual loans 661,000 287,000
Interest Income Reversed 2,400,000 1,400,000
Commercial    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 12,252,805,000 11,145,591,000
Non-accrual 96,146,000  
Non-accrual With No Allowance 4,754,000  
Mortgage finance    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 6,064,019,000 5,215,574,000
Non-accrual 0  
Non-accrual With No Allowance 0  
Commercial real estate    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 5,395,753,000 5,616,282,000
Non-accrual 20,734,000  
Non-accrual With No Allowance 1,534,000  
Consumer    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 434,425,000 $ 565,376,000
Non-accrual 0  
Non-accrual With No Allowance 0  
30-59 Days Past Due    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 34,169,000  
30-59 Days Past Due | Commercial    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 7,041,000  
30-59 Days Past Due | Mortgage finance    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 0  
30-59 Days Past Due | Commercial real estate    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 25,824,000  
30-59 Days Past Due | Consumer    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 1,304,000  
60-89 Days Past Due    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 24,443,000  
60-89 Days Past Due | Commercial    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 24,443,000  
60-89 Days Past Due | Mortgage finance    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 0  
60-89 Days Past Due | Commercial real estate    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 0  
60-89 Days Past Due | Consumer    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 0  
90 Days or More Past Due    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 19,353,000  
90 Days or More Past Due | Commercial    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 19,353,000  
90 Days or More Past Due | Mortgage finance    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 0  
90 Days or More Past Due | Commercial real estate    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 0  
90 Days or More Past Due | Consumer    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 0  
Total Past Due    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 77,965,000  
Total Past Due | Commercial    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 50,837,000  
Total Past Due | Mortgage finance    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 0  
Total Past Due | Commercial real estate    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 25,824,000  
Total Past Due | Consumer    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 1,304,000  
Current    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 23,952,157,000  
Current | Commercial    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 12,105,822,000  
Current | Mortgage finance    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 6,064,019,000  
Current | Commercial real estate    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total 5,349,195,000  
Current | Consumer    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total $ 433,121,000