Revenue - Schedule of Disaggregation of Revenue between Software Solutions, Tech-Enabled Services and Print and Distribution by Reportable Segment (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Total	$ 218.1	$ 242.7	$ 419.2	$ 446.1
Software Solutions
Total	92.2	85.6	176.8	165.9
Tech-enabled Services
Total	85.2	102.2	161.7	185.1
Print and Distribution
Total	40.7	54.9	80.7	95.1
Capital Markets - Software Solutions
Total	59.1	57.3	111.0	110.3
Capital Markets - Software Solutions \| Software Solutions
Total	59.1	57.3	111.0	110.3
Capital Markets - Software Solutions \| Tech-enabled Services
Total	0.0	0.0	0.0	0.0
Capital Markets - Software Solutions \| Print and Distribution
Total	0.0	0.0	0.0	0.0
Capital Markets - Compliance and Communications Management
Total	93.5	113.8	177.4	204.9
Capital Markets - Compliance and Communications Management \| Software Solutions
Total	0.0	0.0	0.0	0.0
Capital Markets - Compliance and Communications Management \| Tech-enabled Services
Total	65.6	81.3	125.4	147.3
Capital Markets - Compliance and Communications Management \| Print and Distribution
Total	27.9	32.5	52.0	57.6
Investment Companies - Software Solutions
Total	33.1	28.3	65.8	55.6
Investment Companies - Software Solutions \| Software Solutions
Total	33.1	28.3	65.8	55.6
Investment Companies - Software Solutions \| Tech-enabled Services
Total	0.0	0.0	0.0	0.0
Investment Companies - Software Solutions \| Print and Distribution
Total	0.0	0.0	0.0	0.0
Investment Companies - Compliance and Communications Management
Total	32.4	43.3	65.0	75.3
Investment Companies - Compliance and Communications Management \| Software Solutions
Total	0.0	0.0	0.0	0.0
Investment Companies - Compliance and Communications Management \| Tech-enabled Services
Total	19.6	20.9	36.3	37.8
Investment Companies - Compliance and Communications Management \| Print and Distribution
Total	$ 12.8	$ 22.4	$ 28.7	$ 37.5

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