v3.25.2
Intangible Assets Table (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Indefinite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount $ 1,119.8   $ 1,119.8   $ 1,123.9
Finite-Lived Intangible Assets, Accumulated Amortization (703.9)   (703.9)   (667.2)
Net Carrying Amount 415.9   415.9   456.7
Amortization of intangible assets 20.4 $ 20.6 41.0 $ 41.3  
Finite-Lived Intangible Assets, Amortization Expense, Current Fiscal Year 80.0   80.0    
Finite-Lived Intangible Assets, Amortization Expense, Year Two 80.0   80.0    
Finite-Lived Intangible Assets, Amortization Expense, Year Three 80.0   80.0    
Finite-Lived Intangible Assets, Amortization Expense, Year Four 80.0   80.0    
Finite-Lived Intangible Assets, Amortization Expense, Year Five 80.0   80.0    
Capitalized Computer Software, Intangible Asset [Member]          
Indefinite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount 61.1   61.1   60.9
Finite-Lived Intangible Assets, Accumulated Amortization (54.3)   (54.3)   (52.6)
Net Carrying Amount 6.8   6.8   8.3
Customer Platforms - Intangible Assets [Member]          
Indefinite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount 856.2   856.2   856.2
Finite-Lived Intangible Assets, Accumulated Amortization (523.3)   (523.3)   (491.6)
Net Carrying Amount 332.9   332.9   364.6
Customer Relationships - Intangible Assets [Member]          
Indefinite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount 53.0   53.0   53.0
Finite-Lived Intangible Assets, Accumulated Amortization (28.2)   (28.2)   (26.5)
Net Carrying Amount 24.8   24.8   26.5
Technology-Based Intangible Assets [Member]          
Indefinite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount 149.5   149.5   153.8
Finite-Lived Intangible Assets, Accumulated Amortization (98.1)   (98.1)   (96.5)
Net Carrying Amount $ 51.4   $ 51.4   $ 57.3