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Summary of Significant Accounting Policies (Additional Information) (Details 1) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Aug. 31, 2023
Aug. 31, 2021
Accounting Policies [Line Items]          
Shares authorized to be repurchased (in shares)       5.0 4.0
Treasury Stock, Shares, Acquired   2.4 3.2    
Total cost of shares repurchased $ 181.5        
Shares repurchased, excluds excise tax $ 0.9 $ 1.7      
Dividends declared (in dollars per share) $ 3.08 $ 2.94 $ 2.72    
Total dividend payments $ 145.8 $ 144.3 $ 139.9    
Net earnings, net of tax, attributable to noncontrolling interests 49.2 49.9 24.6    
Noncontrolling Interest [Member]          
Accounting Policies [Line Items]          
Net earnings, net of tax, attributable to noncontrolling interests 0.3 0.4 0.8    
Subscription Arrangement [Member]          
Accounting Policies [Line Items]          
Unamortized Implementation Costs $ 110.8 $ 54.6 $ 19.9    
August 2019 Authorization          
Accounting Policies [Line Items]          
Treasury Stock, Shares, Acquired     1.2    
August 2019 Authorization | Common Stock [Member]          
Accounting Policies [Line Items]          
Treasury Stock, Shares, Acquired     2.0    
August 2021 Authorization          
Accounting Policies [Line Items]          
Treasury Stock, Shares, Acquired   2.0      
Shares remaining authorized for repurchase (in shares) 0.0        
August 2021 Authorization | Common Stock [Member]          
Accounting Policies [Line Items]          
Treasury Stock, Shares, Acquired     270.0    
August 2023 Authorization          
Accounting Policies [Line Items]          
Treasury Stock, Shares, Acquired 2.0 0.4      
Total cost of shares repurchased $ 140.9        
Shares remaining authorized for repurchase (in shares) 2.6