Significant Accounting Policies and Practices - Components of Accrued and Other Current Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accrued And Other Current Liabilities [Abstract]
Accrued rent	$ 20.1	$ 21.4
Compensation and payroll withholdings	26.2	29.2
Property, payroll and other taxes	5.1	7.8
Accrued insurance	24.9	24.0
Contract liabilities	17.5	17.4	$ 15.7
Contingent Consideration	2.8	1.8
Accrued expenses	31.5	36.0
Accrued and other current liabilities	$ 128.1	$ 137.6