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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 | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Restructuring Cost And Reserve [Line Items] |  |  |  |
Employee Terminations | $ 0.9 | $ 1.2 | $ 3.7 | $ 2.9
Other Charges | 0.1 | 0.1 | 0.2 | 0.2
Total | 1.0 | 1.3 | 3.9 | 3.1
Operating Segments | Capital Markets - Software Solutions |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Employee Terminations |  | 0.3 | 0.6 | 0.3
Other Charges |  | 0.0 | 0.0 | 0.0
Total |  | 0.3 | 0.6 | 0.3
Operating Segments | Capital Markets - Compliance and Communications Management |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Employee Terminations | 0.3 | 0.8 | 1.7 | 1.3
Other Charges | 0.0 | 0.0 | 0.1 | 0.1
Total | 0.3 | 0.8 | 1.8 | 1.4
Operating Segments | Investment Companies - Software Solutions |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Employee Terminations | 0.2 |  | 0.6 | 0.1
Other Charges | 0.0 |  | 0.0 | 0.0
Total | 0.2 |  | 0.6 | 0.1
Operating Segments | Investment Companies - Compliance and Communications Management |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Employee Terminations | 0.4 | 0.1 | 0.5 | 0.1
Other Charges | 0.0 | 0.0 | 0.0 | 0.0
Total | 0.4 | 0.1 | 0.5 | 0.1
Corporate |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Employee Terminations | 0.0 | 0.0 | 0.3 | 1.1
Other Charges | 0.1 | 0.1 | 0.1 | 0.1
Total | $ 0.1 | $ 0.1 | $ 0.4 | $ 1.2

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