Revenues - Disaggregation of Revenues by Geography (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Disaggregation Of Revenue [Line Items]
Total revenues	$ 1,513.9	$ 1,435.0
United States [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	1,036.5	992.3
United Kingdom [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	177.4	165.5
Europe (excluding United Kingdom), Middle East and Africa [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	129.6	115.9
Asia-Pacific and Japan [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	85.4	73.3
Canada [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	56.3	59.6
Americas, excluding United States and Canada [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	$ 28.7	$ 28.4

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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