v3.26.1
Restructuring, Impairment and Other Charges, net - Schedule of Restructuring, Impairment and Other Charges by Segment Recognized in Results of Operations (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Restructuring Cost And Reserve [Line Items]    
Employee Terminations $ 0.6 $ 2.8
Other Charges 0.1 0.1
Total 0.7 2.9
Operating Segments | Capital Markets - Software Solutions    
Restructuring Cost And Reserve [Line Items]    
Employee Terminations 0.1 0.6
Other Charges 0.0 0.0
Total 0.1 0.6
Operating Segments | Capital Markets - Compliance and Communications Management    
Restructuring Cost And Reserve [Line Items]    
Employee Terminations 0.2 1.4
Other Charges 0.0 0.1
Total 0.2 1.5
Operating Segments | Investment Companies - Software Solutions    
Restructuring Cost And Reserve [Line Items]    
Employee Terminations 0.1 0.4
Other Charges 0.0 0.0
Total 0.1 0.4
Operating Segments | Investment Companies - Compliance and Communications Management    
Restructuring Cost And Reserve [Line Items]    
Employee Terminations 0.1 0.1
Other Charges 0.0 0.0
Total 0.1 0.1
Corporate    
Restructuring Cost And Reserve [Line Items]    
Employee Terminations 0.1 0.3
Other Charges 0.1 0.0
Total $ 0.2 $ 0.3