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Commitments, Contingencies, and Financial Guarantees - Additional Information (Details) - USD ($)
 3 Months Ended 12 Months Ended
Dec. 31, 2023
Dec. 31, 2025
Dec. 31, 2024
Loss Contingencies [Line Items]      
Term of standby letters of credit, years   1 year  
Percent of unfunded loan commitments with fixed rates   3.00%  
Loan commitments floating rate, minimum   0.01%  
Loan commitments floating rate, maximum   20.74%  
Allowance for unfunded loan commitments   $ 35,600,000 $ 21,700,000
Visa      
Loss Contingencies [Line Items]      
Investment owned, balance, shares (in shares) 65,466    
Realized gain (loss) $ 21,600,000    
Investment owned, at cost $ 0    
Interest Rate Swap      
Loss Contingencies [Line Items]      
Notional   $ 1,300,000,000 $ 730,500,000