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Intangible Assets Table (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount $ 1,114.3   $ 1,114.3   $ 1,112.6
Accumulated Amortization (478.1)   (478.1)   (415.4)
Net Carrying Amount 636.2   636.2   697.2
Amortization of intangible assets 21.5 $ 21.4 64.4 $ 64.3  
Minimum [Member]          
Finite-Lived Intangible Assets [Line Items]          
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    
Maximum [Member]          
Finite-Lived Intangible Assets [Line Items]          
Finite-Lived Intangible Assets, Amortization Expense, Current Fiscal Year 85.0   85.0    
Finite-Lived Intangible Assets, Amortization Expense, Year Two 85.0   85.0    
Finite-Lived Intangible Assets, Amortization Expense, Year Three 85.0   85.0    
Finite-Lived Intangible Assets, Amortization Expense, Year Four 85.0   85.0    
Finite-Lived Intangible Assets, Amortization Expense, Year Five 85.0   85.0    
Capitalized Computer Software, Intangible Asset [Member]          
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount 51.3   51.3   47.3
Accumulated Amortization (42.0)   (42.0)   (37.0)
Net Carrying Amount 9.3   9.3   10.3
Customer Platforms - Intangible Assets [Member]          
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount 856.2   856.2   856.2
Accumulated Amortization (348.9)   (348.9)   (301.3)
Net Carrying Amount 507.3   507.3   554.9
Customer Relationships - Intangible Assets [Member]          
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount 53.0   53.0   53.0
Accumulated Amortization (18.8)   (18.8)   (16.2)
Net Carrying Amount 34.2   34.2   36.8
Technology-Based Intangible Assets [Member]          
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount 153.8   153.8   156.1
Accumulated Amortization (68.4)   (68.4)   (60.9)
Net Carrying Amount $ 85.4   $ 85.4   $ 95.2