Other Liabilities and Accrued Expenses - Summary (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Other Liabilities Disclosure [Abstract]
Lease liabilities	$ 31.7	$ 35.2
Uncertain tax position	9.6	8.1
Employee compensation	8.5	12.8
Accrued advertising costs	5.8	6.8
Accrued professional fees	5.8	5.5
Advance premium	4.4	2.1
Premium taxes payable	2.9	6.2
Accrued hosting and software	2.9	2.0
Income taxes payable	0.9	0.6
Warrant liability	0.0	0.3
Other payables	7.3	4.9
Total	$ 79.8	$ 84.5