Property and Equipment, net - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 37.8	$ 17.6
Accumulated depreciation	(18.2)	(5.9)
Property and equipment, net	19.6	11.7
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	20.7	11.7
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	13.4	4.6
Furniture and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 3.7	$ 1.3