v3.25.4
Restructuring, Impairment and Other Charges, net - Schedule of Restructuring, Impairment and Other Charges by Segment Recognized in Results of Operations (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Restructuring Cost And Reserve [Line Items]      
Employee Terminations $ 6.1 $ 5.5 $ 9.2
Other Restructuring Charges     0.1
Impairment Charges 3.9 0.6 0.1
Other Charges 0.4 0.5 0.4
Total 10.4 6.6 9.8
Operating Segments | Capital Markets - Software Solutions      
Restructuring Cost And Reserve [Line Items]      
Employee Terminations 0.9 0.6 2.7
Other Restructuring Charges     0.0
Impairment Charges 0.0 0.0 0.0
Other Charges 0.0 0.0 0.0
Total 0.9 0.6 2.7
Operating Segments | Capital Markets - Compliance and Communications Management      
Restructuring Cost And Reserve [Line Items]      
Employee Terminations 2.7 2.4 4.9
Other Restructuring Charges     0.1
Impairment Charges 3.9 0.6 0.1
Other Charges 0.1 0.3 0.2
Total 6.7 3.3 5.3
Operating Segments | Investment Companies - Software Solutions      
Restructuring Cost And Reserve [Line Items]      
Employee Terminations 1.3 0.5 0.6
Other Restructuring Charges     0.0
Impairment Charges 0.0 0.0 0.0
Other Charges 0.0 0.0 0.0
Total 1.3 0.5 0.6
Operating Segments | Investment Companies - Compliance and Communications Management      
Restructuring Cost And Reserve [Line Items]      
Employee Terminations 0.7 0.6 0.1
Other Restructuring Charges     0.0
Impairment Charges 0.0 0.0 0.0
Other Charges 0.1 0.0 0.0
Total 0.8 0.6 0.1
Corporate      
Restructuring Cost And Reserve [Line Items]      
Employee Terminations 0.5 1.4 0.9
Other Restructuring Charges     0.0
Impairment Charges 0.0 0.0 0.0
Other Charges 0.2 0.2 0.2
Total $ 0.7 $ 1.6 $ 1.1