Mortgage Servicing Rights (Tables)

12 Months Ended

Dec. 31, 2023

Transfers and Servicing [Abstract]

Schedule of Servicing Assets at Amortized Value

Information with respect to the Company’s mortgage servicing rights follows:

Year Ended December 31,	2023			2022			2021
Balance at beginning of year	$	31.1		$	31.6		$	34.3
Acquisition of mortgage servicing rights	—			1.3			—
Originations of mortgage servicing rights	1.1			2.5			3.7
Amortization expense	(3.9)			(4.3)			(6.4)
Balance at end of year	28.3			31.1			31.6
Less valuation reserve	—			—			(3.4)
Balance at end of year, net of valuation reserve	$	28.3		$	31.1		$	28.2
Principal balance of serviced loans underlying mortgage servicing rights	$	3,091.1		$	3,259.8		$	3,203.7
Mortgage servicing rights as a percentage of serviced loans	0.92		%	0.95		%	0.88		%