Other Operating Expense (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Other Income and Expenses [Abstract]
Business Promotion	$ 17.8	$ 16.9
Staff Related	9.8	4.2
FDIC Insurance Premiums	7.8	7.9
Other Expenses	54.3	55.0
Total Other Operating Expense	$ 89.7	$ 84.0