Other Real Estate Owned (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Repossessed Assets [Abstract]
Real Estate Acquired Through Foreclosure, Valuation Adjustments	$ 4.3	$ 1.1	$ 2.8
Real Estate Acquired Through Foreclosure [Roll Forward]
Balance at beginning of year	16.5	12.7	2.0
Acquired through acquisitions	0.0	0.0	15.8
Additions	4.6	8.3	0.4
Dispositions	(12.5)	(3.4)	(2.7)
Balance at end of year	4.3	16.5	$ 12.7
Mortgage Loans in Process of Foreclosure, Amount	2.2	$ 0.5
Carrying value of foreclosed OREO	$ 0.0