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Acquisitions Narrative (Details)
$ in Millions
12 Months Ended
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Oct. 03, 2022
Number of businesses acquired 0 2 1  
Current year acquisitions/(dispositions)   $ 11.7    
Business Acquisition, Percentage of Voting Interests Acquired       83.90%
Acquired finite-lived intangible assets related to acquisitions $ 0.0 8.5    
Acquisitions, net of cash acquired   2.6    
Payments to Acquire Businesses, Net of Cash Acquired, including adjustments for prior period acquisitons 0.0 6.3 $ 232.2  
Interest income 151.7 $ 140.8 56.6  
MD&E        
Acquired finite-lived intangible assets related to acquisitions     62.0  
Acquisitions, net of cash acquired $ 50.4   232.2  
Goodwill, Acquired During Period, Including Purchase Accounting Adjustments     $ 211.7  
IA&C        
Number of businesses acquired   1    
SC&E        
Number of businesses acquired   1