Mortgage Servicing Rights - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Servicing Assets at Fair Value [Line Items]
MSR Sales, UPB of underlying loans	$ 56,200.0	$ 60,100.0
MSR loan receivables	37.0	41.0
Loan servicing fees	254.2	233.7
Servicing advances, net	84.0	87.0
Servicing Contracts
Servicing Assets at Fair Value [Line Items]
Net gain (loss) on MSR sales	$ 8.5	$ (9.1)