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Goodwill and Other Intangible Assets - Intangible Assets by Asset Type (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Intangible Assets [Line Items]    
Gross Carrying Amount $ 4,230.8 $ 4,158.1
Accumulated Amortization (2,740.1) (2,530.0)
Net Carrying Amount 1,490.7 1,628.1
Customer relationships    
Intangible Assets [Line Items]    
Gross Carrying Amount 3,352.4 3,330.9
Accumulated Amortization (2,100.6) (1,987.8)
Net Carrying Amount 1,251.8 $ 1,343.1
Trade name    
Intangible Assets [Line Items]    
Useful Life (Years)   20 years
Gross Carrying Amount 446.1 $ 472.7
Accumulated Amortization (341.0) (302.0)
Net Carrying Amount 105.1 170.7
Internally developed software    
Intangible Assets [Line Items]    
Gross Carrying Amount 429.8 352.0
Accumulated Amortization (297.6) (239.8)
Net Carrying Amount 132.2 112.2
Other    
Intangible Assets [Line Items]    
Gross Carrying Amount 2.5 2.5
Accumulated Amortization (0.9) (0.4)
Net Carrying Amount $ 1.6 $ 2.1
Minimum | Customer relationships    
Intangible Assets [Line Items]    
Useful Life (Years) 3 years 3 years
Minimum | Trade name    
Intangible Assets [Line Items]    
Useful Life (Years) 1 year 1 year
Minimum | Internally developed software    
Intangible Assets [Line Items]    
Useful Life (Years) 3 years 3 years
Minimum | Other    
Intangible Assets [Line Items]    
Useful Life (Years) 1 year 1 year
Maximum | Customer relationships    
Intangible Assets [Line Items]    
Useful Life (Years) 14 years 14 years
Maximum | Trade name    
Intangible Assets [Line Items]    
Useful Life (Years) 20 years  
Maximum | Internally developed software    
Intangible Assets [Line Items]    
Useful Life (Years) 5 years 5 years
Maximum | Other    
Intangible Assets [Line Items]    
Useful Life (Years) 10 years 10 years