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Commitments, Contingencies, and Financial Guarantees - Additional Information (Details) - USD ($)
 3 Months Ended 12 Months Ended
Dec. 31, 2023
Dec. 31, 2024
Loss Contingencies [Line Items]    
Term of standby letters of credit, years   1 year
Percent of unfunded loan commitments with fixed rates   4.00%
Loan commitments floating rate, minimum   0.00%
Loan commitments floating rate, maximum   21.49%
Allowance for unfunded loan commitments $ 31,200,000 $ 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 $ 557,800,000 $ 730,500,000