Other Liabilities and Accrued Expenses (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Other Liabilities Disclosure [Abstract]
Lease liabilities (Note 22)	$ 23.8	$ 28.2
Accrued advertising costs	13.4	6.2
Employee compensation	13.2	8.4
Uncertain tax position	9.7	13.3
Premium taxes payable	8.1	5.9
Payable to carriers	6.2	2.0
Accrued professional fees	5.1	5.0
Ceding commission payable	3.9	13.9
Advance premium	3.1	3.4
Reinsurance payable	2.8	0.8
Income tax payable	1.5	1.2
Other payables	14.9	11.2
Total	$ 105.7	$ 99.5
Operating lease, liability, statement of financial position	Total	Total