Other Liabilities and Accrued Expenses (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Other Liabilities Disclosure [Abstract]
Lease liabilities (Note 21)	$ 35.2	$ 22.3
Employee compensation payable	12.8	5.4
Uncertain tax position	8.1	0.0
Accrued advertising costs	6.8	11.2
Premium taxes payable	6.2	5.4
Accrued professional fees	5.5	4.6
Advance premium	2.1	2.0
Accrued hosting and software	2.0	0.6
Income taxes payable	0.6	4.7
Warrant liability	0.3	0.0
Other payables	4.9	1.2
Total	$ 84.5	$ 57.4
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Total	Total