v3.25.1
Segment Information - Schedule of Other Selected Segment Financial Information and Supplemental Geographic and Disaggregated Revenue Information (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Dec. 31, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]        
Depreciation and amortization $ 144.7 $ 144.0    
Capital expenditures: 1.8 1.3    
Additions to computer software and other intangibles: 44.9 56.4    
Assets: 8,745.0   $ 8,755.7  
Goodwill: 3,445.0 3,424.7 3,409.8 $ 3,445.8
Other intangibles: 3,435.0 3,805.2 3,506.8 $ 3,915.9
Other long-lived assets: 1,210.1   1,185.8  
Total long-lived assets 8,090.1   8,102.4  
Deferred income tax 4.5   2.9  
Operating Segments        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Depreciation and amortization 40.5 31.3    
Capital expenditures: 1.7 1.3    
Additions to computer software and other intangibles: 32.1 55.5    
Other EBITDA - Corporate and Other        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Depreciation and amortization 104.2 112.7    
Capital expenditures: 0.1 0.0    
Additions to computer software and other intangibles: 12.8 0.9    
North America        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Assets: 7,210.8   7,315.9  
Goodwill: 2,929.6   2,929.6  
Other intangibles: 3,047.2   3,124.3  
Other long-lived assets: 975.4   964.2  
North America | Operating Segments        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Depreciation and amortization 33.2 25.5    
Capital expenditures: 0.4 0.4    
Additions to computer software and other intangibles: 26.1 47.3    
International        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Assets: 1,534.2   1,439.8  
Goodwill: 515.4   480.2  
Other intangibles: 387.8   382.5  
Other long-lived assets: 234.7   $ 221.6  
International | Operating Segments        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Depreciation and amortization 7.3 5.8    
Capital expenditures: 1.3 0.9    
Additions to computer software and other intangibles: $ 6.0 $ 8.2