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Commitments, Contingencies, and Financial Guarantees - Additional Information (Details)
 9 Months Ended
Sep. 30, 2023
USD ($)
shares
Dec. 31, 2022
USD ($)
Loss Contingencies [Line Items]    
Term of standby letters of credit, years 1 year  
Percent of unfunded loan commitments with fixed rates (in percent) 4.00%  
Loan commitments floating rate, minimum (in percent) 0.00%  
Loan commitments floating rate, maximum (in percent) 23.00%  
Allowance for unfunded loan commitments $ 33,000,000 $ 32,200,000
Class B Restricted Shares | Visa    
Loss Contingencies [Line Items]    
Restricted stock conversion ratio 1.5875  
Investment owned, balance, shares (in shares) | shares 65,466  
Investment owned, at cost $ 0  
Interest Rate Swap    
Loss Contingencies [Line Items]    
Notional amount $ 522,500,000 $ 398,900,000