Summary of Significant Accounting Policies - Schedule of Segment Information of Revenue, Expenses, and Operating Profit (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Revenue	$ 464.7	$ 423.3	$ 946.5	$ 854.8
Labor and benefits	177.5	177.2	357.8	353.3
Other expenses	244.9	232.0	515.4	446.7
Operating profit	$ 42.3	$ 14.1	$ 73.3	$ 54.8

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details