Revenue - Schedule of Disaggregation of Revenue between Tech-Enabled Services, Software Solutions and Print and Distribution by Reportable Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Total net sales	$ 198.6	$ 211.0
Tech-enabled Services
Total net sales	78.4	91.7
Software Solutions
Total net sales	70.1	69.8
Print and Distribution
Total net sales	50.1	49.5
Capital Markets - Software Solutions
Total net sales	43.7	44.7
Capital Markets - Software Solutions | Tech-enabled Services
Total net sales	0.0	0.0
Capital Markets - Software Solutions | Software Solutions
Total net sales	43.7	44.7
Capital Markets - Software Solutions | Print and Distribution
Total net sales	0.0	0.0
Capital Markets - Compliance and Communications Management
Total net sales	94.1	103.6
Capital Markets - Compliance and Communications Management | Tech-enabled Services
Total net sales	60.7	71.1
Capital Markets - Compliance and Communications Management | Software Solutions
Total net sales	0.0	0.0
Capital Markets - Compliance and Communications Management | Print and Distribution
Total net sales	33.4	32.5
Investment Companies - Software Solutions
Total net sales	26.4	25.1
Investment Companies - Software Solutions | Tech-enabled Services
Total net sales	0.0	0.0
Investment Companies - Software Solutions | Software Solutions
Total net sales	26.4	25.1
Investment Companies - Software Solutions | Print and Distribution
Total net sales	0.0	0.0
Investment Companies - Compliance and Communications Management
Total net sales	34.4	37.6
Investment Companies - Compliance and Communications Management | Tech-enabled Services
Total net sales	17.7	20.6
Investment Companies - Compliance and Communications Management | Software Solutions
Total net sales	0.0	0.0
Investment Companies - Compliance and Communications Management | Print and Distribution
Total net sales	$ 16.7	$ 17.0