v3.26.1
Contingencies - Additional Information (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Loss Contingencies [Line Items]    
Unused commitments to extend credit $ 4,467.0 $ 4,361.0
Standby Letters of Credit [Member]    
Loss Contingencies [Line Items]    
Potential exposure to credit loss in the event of nonperformance $ 169.6 $ 136.4
Letters of credit, maturity term - maximum 3 years