Contingencies - Additional Information (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Loss Contingencies [Line Items]
Unused commitments to extend credit	$ 4,590.0	$ 5,120.0
Standby Letters of Credit [Member]
Loss Contingencies [Line Items]
Potential exposure to credit loss in the event of nonperformance	$ 126.6	142.7
Letters of credit, maturity term - maximum	3 years
Collateral held, fair value	$ 26.4	$ 31.5