v3.26.1
Segment Information - Schedule of Depreciation and Amortization, Assets and Capital Expenditures (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Segment Reporting Information [Line Items]        
Depreciation and amortization $ 15.0 $ 15.1 $ 30.0 $ 29.2
Capital expenditures 13.5 16.7 23.9 30.0
Operating Segments        
Segment Reporting Information [Line Items]        
Depreciation and amortization 15.0 15.1 30.0 29.2
Capital expenditures 13.2 15.8 23.1 29.0
Operating Segments | Capital Markets - Software Solutions        
Segment Reporting Information [Line Items]        
Depreciation and amortization 7.6 7.7 15.2 14.7
Capital expenditures 6.5 8.5 11.8 14.7
Operating Segments | Capital Markets - Compliance and Communications Management        
Segment Reporting Information [Line Items]        
Depreciation and amortization 1.7 1.7 3.3 3.1
Capital expenditures 2.1 2.4 3.6 4.4
Operating Segments | Investment Companies - Software Solutions        
Segment Reporting Information [Line Items]        
Depreciation and amortization 5.0 4.7 9.8 9.5
Capital expenditures 4.4 4.3 7.2 8.8
Operating Segments | Investment Companies - Compliance and Communications Management        
Segment Reporting Information [Line Items]        
Depreciation and amortization 0.7 1.0 1.7 1.9
Capital expenditures 0.2 0.6 0.5 1.1
Corporate        
Segment Reporting Information [Line Items]        
Depreciation and amortization 0.0 0.0 0.0 0.0
Capital expenditures $ 0.3 $ 0.9 $ 0.8 $ 1.0