Other Operating Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Components of Other Operating Income [Line Items]
Total Other Operating Income	$ 50.7	$ 61.0
Loan Service Fees
Components of Other Operating Income [Line Items]
Total Other Operating Income	13.7	15.7
Banking Service Fees
Components of Other Operating Income [Line Items]
Total Other Operating Income	14.3	13.3
Bank Owned Life Insurance
Components of Other Operating Income [Line Items]
Total Other Operating Income	19.3	20.6
Other Income
Components of Other Operating Income [Line Items]
Total Other Operating Income	$ 3.3	$ 11.4